{"id":2004,"date":"2020-03-21T06:04:14","date_gmt":"2020-03-21T06:04:14","guid":{"rendered":"http:\/\/boyanmfg.com\/?p=2004"},"modified":"2024-05-27T17:16:29","modified_gmt":"2024-05-27T17:16:29","slug":"common-injection-molding-defects","status":"publish","type":"post","link":"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/","title":{"rendered":"Defeitos comuns de moldagem por inje\u00e7\u00e3o que os clientes devem conhecer"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2004\" class=\"elementor elementor-2004\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a75602c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a75602c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7a68d82\" data-id=\"7a68d82\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-39b1af7 elementor-widget elementor-widget-heading\" data-id=\"39b1af7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Identifying_and_Preventing_Injection_Molding_Defects_in_Manufacturing\" >Identifying and Preventing Injection Molding Defects in Manufacturing<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#The_Main_types_of_injection_molding_defects\" >The Main types of injection molding defects<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Sink_marks\" >Sink marks<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Flashes_or_too_noticeable_parting_line\" >Flashes or too noticeable parting line<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Gate_blush\" >Gate blush<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Weld_line\" >Weld line<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Vacuum_voids_and_air_bubbles\" >Vacuum voids and air bubbles<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Contact_us_today_to_start_your_custom_molding_project\" >Contact us today to start your custom molding project.<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Silver_streak_splay\" >Silver streak \/ splay<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Short_shots\" >Short shots<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Floating_Fibers\" >Floating Fibers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Jetting\" >Jetting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/#Conclusion_on_injection_molding_defects\" >Conclusion on injection molding defects<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Identifying_and_Preventing_Injection_Molding_Defects_in_Manufacturing\"><\/span>Identifying and Preventing Injection Molding Defects in Manufacturing<span class=\"ez-toc-section-end\"><\/span><\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea3bd25 elementor-widget elementor-widget-text-editor\" data-id=\"ea3bd25\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Successfully executing plastic injection molding demands extensive expertise and knowledge. The process involves numerous elements, including mold design, machine settings, the molding procedure itself, and the characteristics of the material. Improper handling of these aspects can lead to various <strong>injection molding defects<\/strong>.<\/p><p>Initiating a plastic molding project requires <strong>thorough communication with your mold maker<\/strong>. It&#8217;s crucial to identify potential injection molding defects beforehand. <strong>Mold makers might overlook minor defects or deem them acceptable<\/strong>, potentially leading to issues during mold manufacturing.<\/p><p>Engaging in <a href=\"http:\/\/boyanmfg.com\/design-for-manufacturing-plastic-injection-molding\/\">Design for Manufacturability (DFM) and mold flow analysis<\/a> can effectively address these challenges, ensuring a smoother molding process.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ffdb124 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ffdb124\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-69a76dd\" data-id=\"69a76dd\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-befda3b elementor-widget elementor-widget-menu-anchor\" data-id=\"befda3b\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"defect_types\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-49ea365 elementor-widget elementor-widget-heading\" data-id=\"49ea365\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"The_Main_types_of_injection_molding_defects\"><\/span>The Main types of injection molding defects<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-85050a2 elementor-widget elementor-widget-text-editor\" data-id=\"85050a2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The <strong>main types of injection molding defects<\/strong> are:<\/p><p>1. <a href=\"#sink_mark\">Sink marks<\/a>, 2. <a href=\"#flash\">Flashes<\/a>, 3. <a href=\"#gate_blush\">Gate blush<\/a>, 4. <a href=\"#weld_line\">Weld line<\/a>, 5. <a href=\"#void_bubble\">Voids and bubbles<\/a>, 6. <a href=\"#silver_streak\">Silver Streak<\/a>. 7. <a href=\"#short_shots\">short shots<\/a>. 8. <a href=\"#floating_fibers\">floating fibers<\/a>. 9. <a href=\"#jetting\">Jetting<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4fa22a9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4fa22a9\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2f2cd45\" data-id=\"2f2cd45\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-80c69e1 elementor-widget elementor-widget-menu-anchor\" data-id=\"80c69e1\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"sink_mark\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-50b6fd1 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"50b6fd1\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-71c42e8 elementor-widget elementor-widget-heading\" data-id=\"71c42e8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Sink_marks\"><\/span>Sink marks<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c567b5 elementor-widget elementor-widget-text-editor\" data-id=\"1c567b5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Sink marks are <strong>unwanted depressions on the surface<\/strong> of injection-molded parts. They occur because during the injection molding process, <strong>the surface cools and solidifies before the interior<\/strong>, and in thicker sections, the interior continues to cool and contract after the surface, causing downward pulling and stretching on the surface.<\/p><p>They often appear in areas with thicker wall sections, excessively rapid transitions in wall thickness, or at the intersections of ribs, bosses, and outer walls.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7b7b2c3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7b7b2c3\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-03e5b9e\" data-id=\"03e5b9e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b24a492 elementor-widget elementor-widget-text-editor\" data-id=\"b24a492\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The main issue caused by sink marks is aesthetic disturbance, but sometimes they can also lead to functional problems, especially when high precision and flatness are required.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-1ddcfcf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1ddcfcf\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a48f30a\" data-id=\"a48f30a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6490c98 elementor-widget elementor-widget-image\" data-id=\"6490c98\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-on-an-ABS-part-300x300.jpg\" class=\"attachment-medium size-medium wp-image-2009\" alt=\"sink mark on an ABS part\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-on-an-ABS-part-300x300.jpg 300w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-on-an-ABS-part-100x100.jpg 100w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-on-an-ABS-part-150x150.jpg 150w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-on-an-ABS-part.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-096b7f6\" data-id=\"096b7f6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-eae95cc elementor-widget elementor-widget-image\" data-id=\"eae95cc\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-caused-by-a-rib.jpg\" title=\"sink mark caused by a rib\" alt=\"sink mark caused by a rib\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-390e98f elementor-widget elementor-widget-image\" data-id=\"390e98f\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"600\" height=\"338\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-caused-by-bosses.jpg\" class=\"attachment-large size-large wp-image-8313\" alt=\"sink mark caused by underneath bosses\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-caused-by-bosses.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-caused-by-bosses-300x169.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Sink mark caused by underneath bosses<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f698f5e elementor-widget elementor-widget-text-editor\" data-id=\"f698f5e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If the surface requires high gloss paint, sink marks become more pronounced. In the images below, the products show a significant difference in the visibility of sink marks before and after painting.<\/p><p>This issue also applies to plastic products with mirror-polished surfaces and high-gloss materials.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-db894be elementor-widget elementor-widget-image\" data-id=\"db894be\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/elementor\/thumbs\/shiny-surface-more-sensitive-to-sink-marks-r8r86bhuluq7yftb6qrydcsoi0vf8x7rp6tp36dsww.jpg\" title=\"shiny surface more sensitive to sink marks\" alt=\"shiny surface is more sensitive to sink marks\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4131d77 elementor-widget elementor-widget-text-editor\" data-id=\"4131d77\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>For some products with excessively thick walls, increasing packing pressure and packing time may not solve the sink mark problem. In such cases, the only solution is to choose materials with relatively lower shrinkage rates.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ad0893e elementor-widget elementor-widget-image\" data-id=\"ad0893e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/boyanmfg.com\/shop\/thick-walled-injection-molding\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"700\" height=\"350\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-on-thick-wall-part.jpg\" class=\"attachment-large size-large wp-image-2027\" alt=\"sink mark on a thick wall part\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-on-thick-wall-part.jpg 700w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-on-thick-wall-part-600x300.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/sink-mark-on-thick-wall-part-300x150.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ca3fa58 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ca3fa58\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-22c5994\" data-id=\"22c5994\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d732821 elementor-widget elementor-widget-text-editor\" data-id=\"d732821\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Cause<\/strong>:<\/p><p>Sink marks occur because during the injection molding process, the surface cools and solidifies first, while the interior continues to cool and contract afterward. During the packing phase of injection molding, where the nozzle continues to supply molten plastic into the mold cavity to compensate for plastic shrinkage.<\/p><p>However, this additional plastic cannot fully compensate for its shrinkage, resulting in downward pulling on the surface.<\/p><p>If the plastic part has thin and uniform wall thickness, the downward shrinkage on its surface is consistent, so there won&#8217;t be noticeable marks of collapse. However, if there are uneven transitions in wall thickness or if the wall thickness is too thick, causing uneven and significant shrinkage, localized collapse marks will be visible on the surface.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-66a60c8 elementor-widget elementor-widget-menu-anchor\" data-id=\"66a60c8\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"avoid_sink_marks\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9e28314 elementor-widget elementor-widget-text-editor\" data-id=\"9e28314\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4><strong>Design Tips for Avoiding Sink Marks<\/strong><\/h4><p>Sinks marks are often the consequence of improper design. Here are 3 typical designs that will cause sink marks:<\/p><ol><li>The rib is too thick compared to the outside walls.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-f7eb6bb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f7eb6bb\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-d34bc0a\" data-id=\"d34bc0a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8be9e92 elementor-widget elementor-widget-text-editor\" data-id=\"8be9e92\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Improper design<\/strong>: the rib is the same thickness as the wall, or even thicker.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-911e452 elementor-widget elementor-widget-image\" data-id=\"911e452\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"301\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/rib-too-thick-causing-sink-mark.jpg\" class=\"attachment-large size-large wp-image-2017\" alt=\"rib too thick will cause sink mark quite noticeable\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/rib-too-thick-causing-sink-mark.jpg 450w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/rib-too-thick-causing-sink-mark-300x201.jpg 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-6594d88\" data-id=\"6594d88\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-12a8547 elementor-widget elementor-widget-text-editor\" data-id=\"12a8547\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Improved design<\/strong>: make the rib smaller than 0.75x\u00a0 or better to be 0.6x of the wall thickness, this will alleviate the sink mark.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a7cadc elementor-widget elementor-widget-image\" data-id=\"6a7cadc\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"301\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/less-thick-rib-alleviate-sink-mark.jpg\" class=\"attachment-large size-large wp-image-2016\" alt=\"less thick rib will alleviate the sink mark\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/less-thick-rib-alleviate-sink-mark.jpg 450w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/less-thick-rib-alleviate-sink-mark-300x201.jpg 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-60849c7 elementor-widget elementor-widget-text-editor\" data-id=\"60849c7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>2. The transition in wall thickness changes too rapidly<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-8e3bcca elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8e3bcca\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-8d6ee51\" data-id=\"8d6ee51\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0fb7f2f elementor-widget elementor-widget-image\" data-id=\"0fb7f2f\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"300\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/uneven-wall-thickness-causing-sink-mark.jpg\" class=\"attachment-full size-full wp-image-2018\" alt=\"Uneven wall thickness will cause sink mark\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/uneven-wall-thickness-causing-sink-mark.jpg 450w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/uneven-wall-thickness-causing-sink-mark-300x200.jpg 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-3cf02a1\" data-id=\"3cf02a1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-670886b elementor-widget elementor-widget-image\" data-id=\"670886b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"299\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/smoother-transition-wall-thickness.jpg\" class=\"attachment-full size-full wp-image-8476\" alt=\"smoother transition of wall thickness to reduce sink marks\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/smoother-transition-wall-thickness.jpg 450w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/smoother-transition-wall-thickness-300x199.jpg 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-a2921f4 elementor-widget elementor-widget-text-editor\" data-id=\"a2921f4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Try to core out the thick area (so it also has thinner walls), or if this is not possible, add a slope between the thick and then area, so the sink will not be so steep and noticeable.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ee3154a elementor-widget elementor-widget-text-editor\" data-id=\"ee3154a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>3. The wall is too thick.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f632ceb elementor-widget elementor-widget-image\" data-id=\"f632ceb\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"300\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/wall-too-thick-causing-sink-marks.jpg\" class=\"attachment-large size-large wp-image-2021\" alt=\"wall too thick will cause sink marks\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/wall-too-thick-causing-sink-marks.jpg 450w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/wall-too-thick-causing-sink-marks-300x200.jpg 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-af4f013 elementor-widget elementor-widget-text-editor\" data-id=\"af4f013\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Always try to avoid thick walls in plastic parts design if possible.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e0e2da elementor-widget elementor-widget-text-editor\" data-id=\"7e0e2da\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Remedies<\/strong>:<\/p><ul><li>Optimize part design (please see above);<\/li><li>Increase the packing pressure and time;<\/li><li>Lower the mold and molten plastic temperature;<\/li><li>Put the gate in the thick-walled section and enlarge the gate size, so as to allow better material compensation in the cooling and solidifying process;<\/li><li>Conduct mold flow analysis before starting making the mold.<\/li><li>Change the material which is less sensitive to shrinkage.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9c7f98e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9c7f98e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ed58381\" data-id=\"ed58381\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-496d9a7 elementor-widget elementor-widget-menu-anchor\" data-id=\"496d9a7\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"flash\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5454f24 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"5454f24\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-036f39a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"036f39a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-6a0c5ea\" data-id=\"6a0c5ea\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2de16f2 elementor-widget elementor-widget-heading\" data-id=\"2de16f2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Flashes_or_too_noticeable_parting_line\"><\/span>Flashes or too noticeable parting line<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-bef4287\" data-id=\"bef4287\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a4907cf elementor-button-info elementor-align-right elementor-widget elementor-widget-button\" data-id=\"a4907cf\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#defect_types\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Back to topic \u2191<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a3b3b1 elementor-widget elementor-widget-text-editor\" data-id=\"2a3b3b1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Flash are irregular excessive material (usually in the form of thin-film) on the plastic parts that escape from the mold cavity. They usually appear along the parting line or any other place where there is a gap between moving parts inside the mold.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-67c2c97 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"67c2c97\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-81bb3dc\" data-id=\"81bb3dc\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-809b0af elementor-widget elementor-widget-image\" data-id=\"809b0af\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/flashes-on-ABS-part.jpg\" class=\"attachment-large size-large wp-image-2031\" alt=\"flashes on an ABS part\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/flashes-on-ABS-part.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/flashes-on-ABS-part-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slight flash<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-7b033d3\" data-id=\"7b033d3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a33da76 elementor-widget elementor-widget-image\" data-id=\"a33da76\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/too-noticeable-parting-line.jpg\" class=\"attachment-large size-large wp-image-2032\" alt=\"too noticeable parting line\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/too-noticeable-parting-line.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/too-noticeable-parting-line-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Too noticeable parting line<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-1010271 elementor-widget elementor-widget-text-editor\" data-id=\"1010271\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Flashes have an unpleasing appearance, it causes the edge to be unclean.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-dc41c78 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"dc41c78\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-eb74062\" data-id=\"eb74062\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1952ec5 elementor-widget elementor-widget-image\" data-id=\"1952ec5\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"350\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/unclean-edge-caused-by-flash.jpg\" class=\"attachment-large size-large wp-image-2036\" alt=\"unclean edge caused by flash\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/unclean-edge-caused-by-flash.jpg 700w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/unclean-edge-caused-by-flash-600x300.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/unclean-edge-caused-by-flash-300x150.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Unclean edge<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-2bda5db\" data-id=\"2bda5db\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ca4c73f elementor-widget elementor-widget-image\" data-id=\"ca4c73f\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"350\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/improved-part-with-less-flash.jpg\" class=\"attachment-large size-large wp-image-2035\" alt=\"improved part with less flash\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/improved-part-with-less-flash.jpg 700w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/improved-part-with-less-flash-600x300.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/improved-part-with-less-flash-300x150.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Improved<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-38eca7c elementor-widget elementor-widget-text-editor\" data-id=\"38eca7c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Cause<\/strong>: An injection mold consists of an upper mold and lower mold when they are pressed together form the enclosed cavity. However there may be a slight gap between them due to inaccuracy of machining, or because of the inside pressure overcome the clamping force. At the same time, there are moving components like sliders, ejector pins in the mold, they all have slight gaps around them. The gap is totally allowed and even helpful for the gas vent. However, when the gap is greater than the limit of the viscosity allows of the molten material, it will leak into the gap and form the flashes. The impact of flash is mostly aesthetical.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f52161b elementor-widget elementor-widget-text-editor\" data-id=\"f52161b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Remedies<\/strong>:<\/p><ul><li>Increase the precision of mold manufacturing to have smaller and consistent gaps in moving components;<\/li><li>Use a bigger injection machine (with a higher tonnage) so as to get greater clamping force;<\/li><li>Lower the packing pressure and temperature;<\/li><li>Change to higher viscosity material (less flowability).<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-881e4f0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"881e4f0\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ffb152c\" data-id=\"ffb152c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ab0c7cc elementor-widget elementor-widget-menu-anchor\" data-id=\"ab0c7cc\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"gate_blush\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d9d7ed elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1d9d7ed\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e6b582c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e6b582c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-61bf2f4\" data-id=\"61bf2f4\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7df4fc1 elementor-widget elementor-widget-heading\" data-id=\"7df4fc1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Gate_blush\"><\/span>Gate blush<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f2663ec\" data-id=\"f2663ec\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-434853d elementor-button-info elementor-align-right elementor-widget elementor-widget-button\" data-id=\"434853d\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#defect_types\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Back to topic \u2191<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-2e647d9 elementor-widget elementor-widget-text-editor\" data-id=\"2e647d9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Gate blush, or sometimes simply called as blush, is the scar-like, cloudy discoloration near the gate area. It has an inconsistent appearance than the other area. As the name suggests, many of them have a dull appearance, however, some may be mixed with brighter (more glossy) area, and they usually appear in the pattern of circular or fan-shaped, depending on the gate type and flow direction of molten resin inside of the cavity.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-83459e2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"83459e2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-53fa543\" data-id=\"53fa543\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f0ff93e elementor-widget elementor-widget-image\" data-id=\"f0ff93e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-black-nylon-part.jpg\" class=\"attachment-large size-large wp-image-2042\" alt=\"gate blush on a black nylon part\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-black-nylon-part.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-black-nylon-part-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-52d1c70\" data-id=\"52d1c70\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-954f2cc elementor-widget elementor-widget-image\" data-id=\"954f2cc\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-white-ABS-part.jpg\" class=\"attachment-large size-large wp-image-2043\" alt=\"gate blush on a white ABS part\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-white-ABS-part.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-white-ABS-part-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-da66ac7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"da66ac7\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-1726f2d\" data-id=\"1726f2d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fd6d92a elementor-widget elementor-widget-image\" data-id=\"fd6d92a\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/circular-gate-blush.jpg\" class=\"attachment-large size-large wp-image-2041\" alt=\"circular gate blush behind a direct gate\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/circular-gate-blush.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/circular-gate-blush-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f28fc43\" data-id=\"f28fc43\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc075f4 elementor-widget elementor-widget-text-editor\" data-id=\"cc075f4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Some might mistakenly refer to &#8220;gate blush&#8221; as &#8220;gate scar&#8221; or &#8220;gate marks&#8221; if they&#8217;re not familiar with the precise terminology. However, &#8220;gate scar&#8221; actually refers the residual plastic that is not thoroughly cleaned or removed in the gate area of an injection molded part, making &#8220;gate blush&#8221; the more accurate term to use.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8813511 elementor-widget elementor-widget-text-editor\" data-id=\"8813511\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Causes<\/strong>:\u00a0Gate blush is mainly caused by incorrect designs of gate type, size, and location. You should avoid a drastic change of flow direction near the gate, since this will produce <strong>excessive shear stress<\/strong> around this area. However the gate design is usually a compromise of all considerations, there are many other limits, but the mold design must keep this into consideration in the mold design.<\/p><p>Other reasons are too high injection filling speed, improper mold temperature, and the properties of the chosen resin.<\/p><p>The too high viscosity of the resin (or poorer flowability), which will also lead to higher shearing stress.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6303d6 elementor-widget elementor-widget-text-editor\" data-id=\"d6303d6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Remedies<\/strong>:<\/p><ul><li>Slow down the injection filling speed.<\/li><li>Adjust the mold temperature and nozzle\/cylinder temperature\/pressure.<\/li><li>Widen the injection gate a bit.<\/li><li>Change the material to lower viscosity and higher shearing strength.<\/li><li>Change the gate type and location. The gate should be located in a thick-walled area instead of the thin-walled area. Try to avoid a drastic change of flow direction inside the mold.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a0e4b2b elementor-widget elementor-widget-text-editor\" data-id=\"a0e4b2b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Examples of gate designs to prevent Gate Blush<\/strong><\/p><p>Transparent parts are particularly sensitive to gate blush, and even a tiny amount of gate blush is unacceptable. In the first example, there is a clear presence of gate blush, and even after optimizing the injection molding parameters, it couldn&#8217;t be completely eliminated.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a295077 elementor-widget elementor-widget-image\" data-id=\"a295077\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"342\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-transparent-plates.jpg\" class=\"attachment-large size-large wp-image-7390\" alt=\"gate blush on transparent plates\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-transparent-plates.jpg 700w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-transparent-plates-600x293.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-blush-transparent-plates-300x147.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-83fac5b elementor-widget elementor-widget-text-editor\" data-id=\"83fac5b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In the following two examples, the areas near the gates were flattened, which effectively prevented gate blush.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-d7f097f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d7f097f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-d5d528c\" data-id=\"d5d528c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c439e44 elementor-widget elementor-widget-image\" data-id=\"c439e44\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"450\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-design-transparent-lens-2.jpg\" class=\"attachment-large size-large wp-image-7392\" alt=\"gate design transparent lens to prevent gate blush 2\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-design-transparent-lens-2.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-design-transparent-lens-2-300x225.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-8e2e228\" data-id=\"8e2e228\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4dda7cb elementor-widget elementor-widget-image\" data-id=\"4dda7cb\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"450\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-design-transparent-lens-1.jpg\" class=\"attachment-large size-large wp-image-7391\" alt=\"\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-design-transparent-lens-1.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/gate-design-transparent-lens-1-300x225.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-252eaa4 elementor-widget elementor-widget-spacer\" data-id=\"252eaa4\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d423891 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d423891\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;shape_divider_top&quot;:&quot;curve&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 100\" preserveAspectRatio=\"none\">\n    <path class=\"elementor-shape-fill\" d=\"M1000,4.3V0H0v4.3C0.9,23.1,126.7,99.2,500,100S1000,22.7,1000,4.3z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9ffaa4f\" data-id=\"9ffaa4f\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e31ebd5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e31ebd5\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-9f3357c\" data-id=\"9f3357c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1824d2c elementor-widget elementor-widget-image\" data-id=\"1824d2c\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"450\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2023\/02\/mold-flow-animation-corner-connector.gif\" class=\"attachment-large size-large wp-image-4000\" alt=\"mold flow animation corner connector\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-80f30a0\" data-id=\"80f30a0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8ada9c2 elementor-widget elementor-widget-image-carousel\" data-id=\"8ada9c2\" data-element_type=\"widget\" data-settings=\"{&quot;slides_to_show&quot;:&quot;1&quot;,&quot;navigation&quot;:&quot;none&quot;,&quot;effect&quot;:&quot;fade&quot;,&quot;speed&quot;:1000,&quot;_animation&quot;:&quot;none&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;autoplay_speed&quot;:5000,&quot;infinite&quot;:&quot;yes&quot;}\" data-widget_type=\"image-carousel.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-image-carousel-wrapper swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Image Carousel\" dir=\"ltr\">\n\t\t\t<div class=\"elementor-image-carousel swiper-wrapper\" aria-live=\"off\">\n\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 of 2\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2023\/02\/plastic-corner-connector-1.png\" alt=\"plastic corner connector 1\" \/><\/figure><\/div><div class=\"swiper-slide\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"2 of 2\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2023\/02\/plastic-corner-connector-2.png\" alt=\"plastic corner connector 2\" \/><\/figure><\/div>\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-e1fe43d\" data-id=\"e1fe43d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ed0c748 elementor-widget elementor-widget-text-editor\" data-id=\"ed0c748\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Want reliable quality at a low price?<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1067bb1 elementor-align-center elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"1067bb1\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-xl\" href=\"http:\/\/boyanmfg.com\/enquiry-plastic-injection-molding\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Request a quote<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5342822 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5342822\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d7378bb\" data-id=\"d7378bb\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-71fc6b2 elementor-widget elementor-widget-menu-anchor\" data-id=\"71fc6b2\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"weld_line\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e52cb8 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6e52cb8\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-c31afe6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c31afe6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-d21f785\" data-id=\"d21f785\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8723375 elementor-widget elementor-widget-heading\" data-id=\"8723375\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Weld_line\"><\/span>Weld line<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-1f1775f\" data-id=\"1f1775f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a80afaa elementor-button-info elementor-align-right elementor-widget elementor-widget-button\" data-id=\"a80afaa\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#defect_types\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Back to topic \u2191<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-febf49c elementor-widget elementor-widget-text-editor\" data-id=\"febf49c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Weld_line\" target=\"_blank\" rel=\"noopener\">Weld lines, or knit lines<\/a>, are hair-like thin lines (sometimes comes with discoloration) on plastic parts, usually on one side of holes (or similar features). They can be straight or curved, but they are quite consistent in shape for the same product throughout production runs.<\/p><p>Some weld lines are quite noticeable.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-def0905 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"def0905\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a3fecb0\" data-id=\"a3fecb0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8840db8 elementor-widget elementor-widget-image\" data-id=\"8840db8\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-on-glossy-surface.jpg\" class=\"attachment-large size-large wp-image-2051\" alt=\"weld line on a black glossy surface\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-on-glossy-surface.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-on-glossy-surface-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-ee3cf92\" data-id=\"ee3cf92\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1ca0430 elementor-widget elementor-widget-image\" data-id=\"1ca0430\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-with-discoloration.jpg\" class=\"attachment-large size-large wp-image-2050\" alt=\"weld line with discoloration\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-with-discoloration.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-with-discoloration-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-7bcb3b6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7bcb3b6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-59bda06\" data-id=\"59bda06\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-49a450d elementor-widget elementor-widget-text-editor\" data-id=\"49a450d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Some defects are very minor and can only be seen at certain angles of reflection.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dc469b6 elementor-widget elementor-widget-image\" data-id=\"dc469b6\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"536\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/01\/weld-line-around-the-hole-on-plastic-housing.jpg\" class=\"attachment-large size-large wp-image-1381\" alt=\"\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/01\/weld-line-around-the-hole-on-plastic-housing.jpg 750w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/01\/weld-line-around-the-hole-on-plastic-housing-600x429.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/01\/weld-line-around-the-hole-on-plastic-housing-300x214.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-7e81f6f\" data-id=\"7e81f6f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5f7c654 elementor-widget elementor-widget-text-editor\" data-id=\"5f7c654\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Sometimes the weld lines can be covered by painting or plating.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46dfe18 elementor-widget elementor-widget-image\" data-id=\"46dfe18\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"536\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-covered-by-paint.jpg\" class=\"attachment-large size-large wp-image-4140\" alt=\"weld line covered by plastic painting\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-covered-by-paint.jpg 750w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-covered-by-paint-600x429.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-line-covered-by-paint-300x214.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">The weld line can be covered by painting on plastic parts.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-9dc3fec elementor-widget elementor-widget-text-editor\" data-id=\"9dc3fec\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Weld lines are very common in plastic parts and can hardly be completely avoided. They are acceptable if controlled at a minimal level. We just need to define to what level the weld lines are acceptable for a plastic part.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b2a351c elementor-widget elementor-widget-text-editor\" data-id=\"b2a351c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Weld Lines on Transparent Parts<\/strong><\/p><p>Weld line issues are particularly important for transparent parts since these often have higher aesthetic requirements. The visibility of knit lines tends to be more pronounced on transparent components. For instance, in the image below, the knit lines on the transparent part are more visible at certain reflective angles but less noticeable from other perspectives, such as the area indicated by the arrow on the left.<\/p><p>Furthermore, it&#8217;s challenging to completely eliminate knit lines on transparent parts by adjusting injection molding parameters, such as increasing mold temperature or injection speed. Therefore, during the design phase, it&#8217;s essential to be aware of this when including through holes or slots in such components.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c6c019f elementor-widget elementor-widget-image\" data-id=\"c6c019f\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"450\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-lines-transparent-plastic-part.jpg\" class=\"attachment-large size-large wp-image-8327\" alt=\"weld lines on transparent plastic part\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-lines-transparent-plastic-part.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/weld-lines-transparent-plastic-part-300x225.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-1e5046b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1e5046b\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-50a42cf\" data-id=\"50a42cf\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-23a3956 elementor-widget elementor-widget-text-editor\" data-id=\"23a3956\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Causes<\/strong>: When molten plastic is injected into the mold cavity, they will be forced to be divided into 2 flows when meeting an obstacle like a hole (which is a post inside of the mold), then the separated flows will meet at its downstream, or on the other end of the hole. During this process, the molten plastic gets partially solidified, which will cause the flows cannot merge so well together.<\/p><p>When this partial solidification becomes worse, discoloration will happen.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-c6f94d5\" data-id=\"c6f94d5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-67e260e elementor-widget elementor-widget-text-editor\" data-id=\"67e260e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>An animation to show the form of weld lines:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-159b870 elementor-widget elementor-widget-image\" data-id=\"159b870\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"188\" height=\"141\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/forming-of-molding-welding-line.gif\" class=\"attachment-full size-full wp-image-4141\" alt=\"The forming of welding line in plastic molding\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">The weld line predicted by Mold Flaw Analysis<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-0a87f8f\" data-id=\"0a87f8f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0e5130b elementor-widget elementor-widget-image\" data-id=\"0e5130b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"350\" height=\"262\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/actual-weld-line-MFA.jpg\" class=\"attachment-large size-large wp-image-4142\" alt=\"\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/actual-weld-line-MFA.jpg 350w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/actual-weld-line-MFA-300x225.jpg 300w\" sizes=\"(max-width: 350px) 100vw, 350px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">The actual weldline on real parts<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-6cedffa elementor-widget elementor-widget-text-editor\" data-id=\"6cedffa\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Remedies<\/strong>:<\/p><ul><li>Increase the mold temperature, use a mold heater (there will be a bit of cost increase).<\/li><li>Increase the mold and cylinder temperature.<\/li><li>Increase the filling speed.<\/li><li>Change the plastic material that is less sensitive to weld lines.<\/li><li>Optimize the mold design.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5c69f09 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5c69f09\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c88a5c0\" data-id=\"c88a5c0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-991a368 elementor-widget elementor-widget-menu-anchor\" data-id=\"991a368\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"void_bubble\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62f259e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"62f259e\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-9a260c3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9a260c3\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-1bf0fdf\" data-id=\"1bf0fdf\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-18c923b elementor-widget elementor-widget-heading\" data-id=\"18c923b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Vacuum_voids_and_air_bubbles\"><\/span>Vacuum voids and air bubbles<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-cffa685\" data-id=\"cffa685\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5c90dca elementor-button-info elementor-align-right elementor-widget elementor-widget-button\" data-id=\"5c90dca\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#defect_types\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Back to topic \u2191<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-d2a282b elementor-widget elementor-widget-text-editor\" data-id=\"d2a282b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Vacuum voids and air bubbles are similar in appearance and can be often be confused with each other. They are both bubbles inside of a plastic injection molded part.\u00a0<\/p><p>For transparent parts the bubbles are an aesthetic or functional issue, for example, for LED lenses, even the smallest bubbles are not acceptable. At the same time, bubbles can sometimes weaken the mechanical strength, thus we also need to check if the weakening will cause any problem for their specific application.<\/p><p>However, sometimes when strength is not a concern, the voids and bubbles is not a big issue for opaque plastic parts.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-3f7b9cb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3f7b9cb\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-6b12c6a\" data-id=\"6b12c6a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f772d27 elementor-widget elementor-widget-image\" data-id=\"f772d27\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"507\" height=\"337\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/vacuum-voids-in-thick-plastic-part.jpg\" class=\"attachment-large size-large wp-image-2058\" alt=\"Vacuum voids caused by thick-wall structure\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/vacuum-voids-in-thick-plastic-part.jpg 507w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/vacuum-voids-in-thick-plastic-part-300x199.jpg 300w\" sizes=\"(max-width: 507px) 100vw, 507px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Vacuum voids<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a3040be\" data-id=\"a3040be\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ef98140 elementor-widget elementor-widget-image\" data-id=\"ef98140\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/air-bubbles-in-led-lens.jpg\" class=\"attachment-large size-large wp-image-2059\" alt=\"air bubbles in first few shots of trial production\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/air-bubbles-in-led-lens.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/air-bubbles-in-led-lens-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Air bubbles<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-85a1c7f elementor-widget elementor-widget-text-editor\" data-id=\"85a1c7f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>We can do a heat test to check what kind of bubbles they are, use a heat air gun to heat and soften the plastic, if the bubbles grow bigger, then they are air bubbles, if they collapse (or become smaller), then they are vacuum voids.\u00a0<\/p><p>Although they are quite alike, the reasons and countermeasures are different:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-af921d6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"af921d6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f2cbf45\" data-id=\"f2cbf45\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1110b89 elementor-widget elementor-widget-heading\" data-id=\"1110b89\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">1. Vacuum voids<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-08cf67d elementor-widget elementor-widget-text-editor\" data-id=\"08cf67d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Causes<\/strong>: The mechanism for the formation of vacuum voids are quite similar to sink marks. The outside material gets cooled and solidified first, while the inside material still continues to cool down and shrink, at first it will get compensated with the new material flow from the gate. After the gate freezes,\u00a0 there will be no material compensation anymore, and if the outside material is too hard to be pulled inwards, then the voids will form.<\/p><p><strong>Remedies<\/strong>:<\/p><ul><li>Optimize part design, make the walls thinner if possible<\/li><li>Increase the packing pressure and time;<\/li><li>Lower the mold and molten plastic temperature;<\/li><li>Widen the gate. Locate the gate in the thick-walled section so as to allow better material compensation;<\/li><li>Change the material which is less sensitive to shrinkage.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4aedf21 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4aedf21\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-28c0711\" data-id=\"28c0711\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ba4b1c6 elementor-widget elementor-widget-heading\" data-id=\"ba4b1c6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">2. Air bubbles<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25ae597 elementor-widget elementor-widget-text-editor\" data-id=\"25ae597\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Causes<\/strong>: When the injection filling speed is too high, or the plastic part has very thin walls, or sometimes when the mold vent is not adequate, it will cause the air to be trapped inside of the plastic part and form the air bubbles.<\/p><p><strong>Remedies<\/strong>:<\/p><ul><li>Slow down the filling speed\uff0cso as to avoid air trap in the mold;<\/li><li>Improve the vent of the mold.<\/li><li>Dry the material completely before injection molding;<\/li><li>Make sure the cylinder screw work properly not to mix air in the molten plastic;<\/li><li>Do not overheat the plastic in the tank or stay too long, this may cause decomposition of resin and form gas.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6ee4928\" data-id=\"6ee4928\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-751acbf elementor-widget elementor-widget-image\" data-id=\"751acbf\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"380\" height=\"380\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/02\/plastic-mold-helical-gear.png\" class=\"attachment-full size-full wp-image-1959\" alt=\"plastic mold for a helical gear\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/02\/plastic-mold-helical-gear.png 380w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/02\/plastic-mold-helical-gear-300x300.png 300w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/02\/plastic-mold-helical-gear-100x100.png 100w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/02\/plastic-mold-helical-gear-150x150.png 150w\" sizes=\"(max-width: 380px) 100vw, 380px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64d74cf elementor-widget elementor-widget-heading\" data-id=\"64d74cf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Contact_us_today_to_start_your_custom_molding_project\"><\/span>Contact us today to start your custom molding project.<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d15f358 elementor-align-center elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"d15f358\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-xl\" href=\"http:\/\/boyanmfg.com\/enquiry-plastic-injection-molding\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Request a quote<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-86fefff elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"86fefff\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8c05e1c\" data-id=\"8c05e1c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a957ab2 elementor-widget elementor-widget-menu-anchor\" data-id=\"a957ab2\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"silver_streak\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6dd3d0c elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6dd3d0c\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-eef639e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"eef639e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a4469f3\" data-id=\"a4469f3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bfaa5e0 elementor-widget elementor-widget-heading\" data-id=\"bfaa5e0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Silver_streak_splay\"><\/span>Silver streak \/ splay<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-2faec6d\" data-id=\"2faec6d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bc7f221 elementor-button-info elementor-align-right elementor-widget elementor-widget-button\" data-id=\"bc7f221\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#defect_types\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Back to topic \u2191<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-ef5e06d elementor-widget elementor-widget-text-editor\" data-id=\"ef5e06d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Silver streaks or splays are clusters of silver lines on the surface of plastic parts, the lines are usually arranged in the way of flow direction.<\/p><p>Silver streak will affect the performance of material as well as the appearance, so it should be paid attention to.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-80182a2 elementor-widget elementor-widget-image\" data-id=\"80182a2\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/silver-streak-PC-plastic.jpg\" class=\"attachment-large size-large wp-image-2069\" alt=\"silver streak on a PC plastic part\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/silver-streak-PC-plastic.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/silver-streak-PC-plastic-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d227b7d elementor-widget elementor-widget-text-editor\" data-id=\"d227b7d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Causes:<\/strong><\/p><ul><li>Moisture in the material can turn into steam during injection molding, forming silver streaks or splay on the material surface. Some materials are more sensitive to moisture (e.g., PC, ABS), while others are less so (e.g., PP, PE).<\/li><li>The presence of air in the material and poor venting in the mold.<\/li><li>Too fast injection speed, causing high shear stress, which can lead to localized discoloration, similar to the formation of gate blush.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2fee117 elementor-widget elementor-widget-text-editor\" data-id=\"2fee117\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"padding-left: 40px;\">For example, on this part, you can see several faint silver streaks on its surface. These are caused by several horizontal ribs on the backside, which alter the direction and consistency of the plastic flow. If the injection speed is high, it can lead to localized higher shear stress, thus causing silver streaks.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-beb5da0 elementor-widget elementor-widget-image\" data-id=\"beb5da0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"319\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/shearing-stress-sliver-streaks.jpg\" class=\"attachment-large size-large wp-image-8336\" alt=\"sliver streaks caused by shearing stress, too fast injection\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/shearing-stress-sliver-streaks.jpg 700w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/shearing-stress-sliver-streaks-600x273.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/shearing-stress-sliver-streaks-300x137.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b6a832 elementor-widget elementor-widget-text-editor\" data-id=\"1b6a832\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Too high temperatures in the nozzel and the barrel, which can cause plastic decomposition (generating gas) or denaturation.<\/li><li>Too low mold temperature, affecting the plastic&#8217;s flowability.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ed6392e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ed6392e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-30558ba\" data-id=\"30558ba\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-254d1ff elementor-widget elementor-widget-text-editor\" data-id=\"254d1ff\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Remidies:<\/strong><\/p><ul><li>Dry the material according to the instructions from the material manufacturer.<\/li><li>Increase the mold temperature.<\/li><li>Improve cooling of the entire mold to prevent partial overheating.<\/li><li>Improve the venting of the mold.<\/li><li>Lower the nozzle and barrel temperatures to an appropriate range.<\/li><li>Reduce injection speed and pressure.<\/li><li>Increase the size of the nozzle to reduce injection shear stress.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-68efe28 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"68efe28\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-631ef08 elementor-widget elementor-widget-menu-anchor\" data-id=\"631ef08\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"short_shots\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-ba56dc1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ba56dc1\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-5c9cc11\" data-id=\"5c9cc11\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ff15e07 elementor-widget elementor-widget-heading\" data-id=\"ff15e07\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Short_shots\"><\/span>Short shots<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a163543\" data-id=\"a163543\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-74df170 elementor-button-info elementor-align-right elementor-widget elementor-widget-button\" data-id=\"74df170\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#defect_types\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Back to topic \u2191<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-5737305 elementor-widget elementor-widget-text-editor\" data-id=\"5737305\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Short shots are the inadequate filling of the molten material to the mold cavity. When the part is taken out of the mold, it has some missing pieces, often at the far end of the injection gate.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-b409c08 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b409c08\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f2e6082\" data-id=\"f2e6082\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7834efe elementor-widget elementor-widget-image\" data-id=\"7834efe\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"450\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/short-shots-molding-defects-1.jpg\" class=\"attachment-large size-large wp-image-4151\" alt=\"short shots, molding defects 1\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/short-shots-molding-defects-1.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/short-shots-molding-defects-1-300x225.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-64b3247\" data-id=\"64b3247\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c117fb4 elementor-widget elementor-widget-image\" data-id=\"c117fb4\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"450\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/short-shots-molding-defects-2.jpg\" class=\"attachment-large size-large wp-image-4150\" alt=\"short shots, molding defects 2\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/short-shots-molding-defects-2.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/short-shots-molding-defects-2-300x225.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-6070261 elementor-widget elementor-widget-text-editor\" data-id=\"6070261\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Causes:<\/strong><\/p><ul><li>The wall or rib is too thin and too tall compared to the overall part dimensions, which results in high flowing resistance for the molten material;<\/li><li>The material is too viscous or dense;<\/li><li>Inadequate venting, causing the air to be trapped in the mold;<\/li><li>Injection pressure too low;<\/li><li>The mold temperature is too low, which caused the material to solidify before it fills;<br \/>The gate is too small or it is not in the proper position.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ed46ae9 elementor-widget elementor-widget-text-editor\" data-id=\"ed46ae9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Remedies:<\/strong><\/p><ul><li>Redesign the part to increase the wall thickness and reduce the height or ribs;<\/li><li>Change the material with lower viscosity;<\/li><li>Improve venting of the mold;<\/li><li>Increase the injection pressure, but there is a side effect if the pressure is too high;<\/li><li>Use a mold heater.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f22befe elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f22befe\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cb0dd47\" data-id=\"cb0dd47\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1e5d4e8 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1e5d4e8\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7be010d elementor-widget elementor-widget-menu-anchor\" data-id=\"7be010d\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"floating_fibers\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-dfc0c72 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"dfc0c72\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-927f3cb\" data-id=\"927f3cb\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-867bcb3 elementor-widget elementor-widget-heading\" data-id=\"867bcb3\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Floating_Fibers\"><\/span>Floating Fibers<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-4a2e190\" data-id=\"4a2e190\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5b95f84 elementor-button-info elementor-align-right elementor-widget elementor-widget-button\" data-id=\"5b95f84\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#defect_types\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Back to topic \u2191<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-a68ee44 elementor-widget elementor-widget-text-editor\" data-id=\"a68ee44\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>When injecting glass-fiber-reinforced plastics, a frequent issue is the occurrence of &#8220;floating fibers,&#8221; which create rough, patchy areas on the surface. These areas arise from the gathering of glass fibers on the surface, mainly causing aesthetic defects.<\/p><p>This issue is more noticeable in dark-colored plastics, especially black, because glass fibers are light-colored, almost white.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fef1224 elementor-widget elementor-widget-image\" data-id=\"fef1224\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"487\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2023\/12\/floating-fiber-nylon-plastic.jpg\" class=\"attachment-large size-large wp-image-7376\" alt=\"floating fiber on surface of nylon plastic part\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2023\/12\/floating-fiber-nylon-plastic.jpg 650w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2023\/12\/floating-fiber-nylon-plastic-600x450.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2023\/12\/floating-fiber-nylon-plastic-300x225.jpg 300w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Floating fibers<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6329e3e elementor-widget elementor-widget-image\" data-id=\"6329e3e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"487\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/closer-view-floating-fiber.jpg\" class=\"attachment-large size-large wp-image-7381\" alt=\"closer view, floating fiber on surface of nylon plastic part\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/closer-view-floating-fiber.jpg 650w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/closer-view-floating-fiber-600x450.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/closer-view-floating-fiber-300x225.jpg 300w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">A closer view<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-48cb0aa elementor-widget elementor-widget-text-editor\" data-id=\"48cb0aa\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Causes:<\/strong><\/p><ul><li>The problem originates because glass fibers and resin are physically mixed and meant to disperse evenly. However, during melting, the different densities and flow characteristics of glass fibers and resin can lead to separation, with fibers clustering together.<\/li><li>This can be likened to branches and debris gathering in the flow of a river.<\/li><li>Floating fibers solidify more quickly than the resin material, and when they come into contact with the cooler mold surface, they solidify and appear on the surface of the part.<\/li><li>This phenomenon is more pronounced when the resin material has poor flowability, the bonding between glass fibers and resin is weak, the mold temperature is low, and the injection speed and pressure are low.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e68dc22 elementor-widget elementor-widget-text-editor\" data-id=\"e68dc22\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"flex-1 overflow-hidden\"><div class=\"react-scroll-to-bottom--css-todou-79elbk h-full\"><div class=\"react-scroll-to-bottom--css-todou-1n7m0yu\"><div class=\"flex flex-col pb-9 text-sm\"><div class=\"w-full text-token-text-primary\" data-testid=\"conversation-turn-11\"><div class=\"px-4 py-2 justify-center text-base md:gap-6 m-auto\"><div class=\"flex flex-1 text-base mx-auto gap-3 md:px-5 lg:px-1 xl:px-5 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem] group final-completion\"><div class=\"relative flex w-full flex-col lg:w-[calc(100%-115px)] agent-turn\"><div class=\"flex-col gap-1 md:gap-3\"><div class=\"flex flex-grow flex-col max-w-full\"><div class=\"min-h-[20px] text-message flex flex-col items-start gap-3 whitespace-pre-wrap break-words [.text-message+&amp;]:mt-5 overflow-x-auto\" data-message-author-role=\"assistant\" data-message-id=\"65909372-b370-4b5d-8593-873beb5177e2\"><div class=\"markdown prose w-full break-words dark:prose-invert light\"><p><strong>Remedies:<\/strong><\/p><ul><li><strong>Increase the flowability of the nylon material<\/strong>: This helps the plastic quickly fill the mold cavity, ensuring even dispersion of glass fibers and preventing accumulation.<\/li><li><strong>Raise the mold temperature<\/strong>: Higher temperatures improve material flowability and prevent the accumulation of fibers due to cooling and solidification on the surface.<\/li><li><strong>Increase injection speed and pressure<\/strong>: This ensures rapid material filling, avoiding fiber accumulation.<\/li><li><strong>Add a compatibilizer between glass fibers and resin material<\/strong>: However, this solution is costlier as it requires more support from material suppliers and could potentially weaken the performance of the plastic in other aspects.<\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e4ec275 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e4ec275\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d871eca\" data-id=\"d871eca\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0da0b2d elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"0da0b2d\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c62bb1 elementor-widget elementor-widget-menu-anchor\" data-id=\"2c62bb1\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"jetting\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-a8b24b6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a8b24b6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f4a80f0\" data-id=\"f4a80f0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-056d02b elementor-widget elementor-widget-heading\" data-id=\"056d02b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Jetting\"><\/span>Jetting<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-5406217\" data-id=\"5406217\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c441c50 elementor-button-info elementor-align-right elementor-widget elementor-widget-button\" data-id=\"c441c50\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#defect_types\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Back to topic \u2191<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-ba2e6b2 elementor-widget elementor-widget-text-editor\" data-id=\"ba2e6b2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.youtube.com\/watch?v=ZcvOEEB827Y\" target=\"_blank\" rel=\"noopener\">Jetting<\/a> is a <strong>snake-like pattern<\/strong>. It is a defect in injection molded products, characterized by <strong>irregular, snake-like textures,<\/strong> often visible as color variations. They typically occur where the material flows from the gate into the mold cavity.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4fb523b elementor-widget elementor-widget-image\" data-id=\"4fb523b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"338\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/jetting-example-injection-molding-1.jpg\" class=\"attachment-large size-large wp-image-7453\" alt=\"jetting example 1 injection molding\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/jetting-example-injection-molding-1.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/jetting-example-injection-molding-1-300x169.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0732296 elementor-widget elementor-widget-image\" data-id=\"0732296\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"366\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/jetting-example-injection-molding-2.jpg\" class=\"attachment-large size-large wp-image-7452\" alt=\"jetting example 2 injection molding\" srcset=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/jetting-example-injection-molding-2.jpg 650w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/jetting-example-injection-molding-2-600x338.jpg 600w, https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/jetting-example-injection-molding-2-300x169.jpg 300w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-68b4797 elementor-widget elementor-widget-text-editor\" data-id=\"68b4797\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Causes<\/strong>:<\/p><ul><li>The jetting defect primarily arises in molds with <strong><a href=\"http:\/\/boyanmfg.com\/injection-mold-gate-types\/#edge_gate\">edge\u00a0gates<\/a>.<\/strong><\/li><li>When plastic passes through narrow areas like the sprue and gates, then suddenly enters thicker and larger spaces, the toothpaste-like molten plastic is rapidly injected into the mold cavity at a very high speed and bends to form a snake-like shape.<\/li><li>This plastic cools rapidly upon contacting the mold surface, failing to fully merge with the material that follows into the mold, creating noticeable lines on the product&#8217;s surface.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-346d3d2 elementor-widget elementor-widget-image\" data-id=\"346d3d2\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"158\" src=\"https:\/\/boyanmfg.com\/wp-content\/uploads\/2020\/03\/jetting-injection-molding.gif\" class=\"attachment-large size-large wp-image-7448\" alt=\"How jetting is forming in injection molding\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">How jetting is forming in injection molding<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e62718 elementor-widget elementor-widget-text-editor\" data-id=\"7e62718\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"w-full text-token-text-primary\" data-testid=\"conversation-turn-13\"><div class=\"px-4 py-2 justify-center text-base md:gap-6 m-auto\"><div class=\"flex flex-1 text-base mx-auto gap-3 md:px-5 lg:px-1 xl:px-5 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem] group\"><div class=\"relative flex w-full flex-col lg:w-[calc(100%-115px)] agent-turn\"><div class=\"flex-col gap-1 md:gap-3\"><div class=\"flex flex-grow flex-col max-w-full\"><div class=\"min-h-[20px] text-message flex flex-col items-start gap-3 whitespace-pre-wrap break-words [.text-message+&amp;]:mt-5 overflow-x-auto\" data-message-author-role=\"assistant\" data-message-id=\"0b6529f7-707b-40a7-a248-c663cff1e453\"><div class=\"markdown prose w-full break-words dark:prose-invert light\"><p><strong>Remedies<\/strong>:<\/p><ul><li><strong>Improve Gate Design<\/strong>: Avoid gate designs in thick and open areas, and avoid the material from moving from thinner to thicker sections.<\/li><li><strong>Segmented Injection Speed Adjustment<\/strong>: Slow down the injection speed when plastic enters more open areas to reduce snake flow marks.<\/li><li><strong>Increase Mold and Nozzle Temperature<\/strong>: Higher temperatures for the mold and plastic improve flow and merging, reducing snake flow marks.<\/li><li><strong>Enlarge Gate Size<\/strong>: A larger gate can improve molten plastic flow, thus minimizing snake flow marks.<\/li><li><strong>Prevent Cold Material Entry into the Mold<\/strong>: For instance, adding a cold slug well to intercept cold material ensures only uniformly molten plastic enters the mold cavity.<\/li><\/ul><p>In summary, these measures can effectively reduce the formation of snake flow marks in injection molding, enhancing product quality.<\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8c3b1a1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8c3b1a1\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-54503e3\" data-id=\"54503e3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1935898 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1935898\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a47e935 elementor-widget elementor-widget-heading\" data-id=\"a47e935\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Conclusion_on_injection_molding_defects\"><\/span>Conclusion on injection molding defects<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9e337fa elementor-widget elementor-widget-text-editor\" data-id=\"9e337fa\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>These are the most common injection molding defects that we have dealt with in our earlier jobs. If you are the customer, you need to verify which flaws can not be accepted and be addressed beforehand so the injection molding manufacturer understands your quality requirements clearly. In order to avoid translation misunderstanding, when you work with overseas manufacturers, it will be better to use pictures to explain each defect.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Identifica\u00e7\u00e3o e Preven\u00e7\u00e3o de Defeitos na Moldagem por Inje\u00e7\u00e3o na Manufatura. Executar com sucesso a moldagem por inje\u00e7\u00e3o de pl\u00e1stico exige um vasto conhecimento e experi\u00eancia. O processo envolve numerosos elementos, incluindo o design do molde, as configura\u00e7\u00f5es da m\u00e1quina, o pr\u00f3prio procedimento de moldagem e as caracter\u00edsticas do material. O manuseio inadequado destes aspetos pode levar a v\u00e1rios defeitos na moldagem por inje\u00e7\u00e3o. Iniciar um projeto de moldagem de pl\u00e1stico\u2026&nbsp;<a href=\"https:\/\/boyanmfg.com\/pt\/common-injection-molding-defects\/\" rel=\"bookmark\">Ler mais \u00bb<span class=\"screen-reader-text\">Defeitos comuns de moldagem por inje\u00e7\u00e3o que os clientes devem conhecer<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":2076,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"on","neve_meta_content_width":100,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"on","neve_meta_disable_title":"","neve_meta_reading_time":"","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[55,72],"tags":[],"class_list":["post-2004","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-manufacturing-knowledge","category-plastic-molding"],"acf":[],"_links":{"self":[{"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/posts\/2004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/comments?post=2004"}],"version-history":[{"count":0,"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/posts\/2004\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/media\/2076"}],"wp:attachment":[{"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/media?parent=2004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/categories?post=2004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boyanmfg.com\/pt\/wp-json\/wp\/v2\/tags?post=2004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}