{"id":1787,"date":"2024-03-04T03:17:04","date_gmt":"2024-03-04T10:17:04","guid":{"rendered":"https:\/\/www.wundermold.com\/?p=1787"},"modified":"2024-03-04T03:17:04","modified_gmt":"2024-03-04T10:17:04","slug":"what-quality-parameters-plastic-injection-molding","status":"publish","type":"post","link":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/","title":{"rendered":"Quality Control in Plastic Injection Molding"},"content":{"rendered":"<p><span style=\"font-weight: 400;\"><img decoding=\"async\" class=\"alignright size-full wp-image-1789\" src=\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/plastic-injection-mold-manufacturers.jpg\" alt=\"plastic injection mold manufacturers\" width=\"500\" height=\"369\" srcset=\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/plastic-injection-mold-manufacturers.jpg 500w, https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/plastic-injection-mold-manufacturers-300x221.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>Injection molding is a straightforward process that can yield high-quality parts with high precision. However, it requires a rigorous control system that encompasses both pre and post-production testing in order for the final product to match the required specifications. Let\u2019s <\/span><a href=\"https:\/\/www.wundermold.com\/plastic-injection-molding-companies\/\"><span style=\"font-weight: 400;\">explore the process of quality control in more detail<\/span><\/a><span style=\"font-weight: 400;\">, analyzing the steps plastic injection mold manufacturers need to take to ensure a reliable manufacturing system.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">What are the quality parameters of plastic injection molding?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The specific measures related to the process are referred to as process parameters or process variables. They indicate whether operations meet the necessary specifications or they need adjusting. The following are some of the most important parameters that have a high impact on the quality of the final product:<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Melt temperature<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">In order to secure a smooth transition of the resin from solid to liquid state, it\u2019s necessary to gradually heat the plastic. Carefully setting up the temperature is critical to ensure the material is properly melted and not allowed to burn. While the required temperature depends on the type of material and characteristics of the part, a common range is from 300 to 800 degrees Fahrenheit.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Thermocouple\"><span style=\"font-weight: 400;\">monitoring system includes thermocouples<\/span><\/a><span style=\"font-weight: 400;\">, which sense the temperature, and controllers, which regulate the temperature according to the settings adjusted by the operator.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Mold temperature<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The temperature of the mold is essential as it can significantly affect the quality of the part. If the temperature isn\u2019t appropriate, it can result in defects such as jetting, sink marks, and warpage. <\/span><a href=\"https:\/\/www.wundermold.com\/what-type-plastic-used-injection-molding\/\"><span style=\"font-weight: 400;\">Depending on the type of plastic<\/span><\/a><span style=\"font-weight: 400;\">, it can affect part properties such as:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Molecular weight<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fatigue resistance<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stress cracks<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wear resistance<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dimensional stability<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Creep resistance<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Injection pressure<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Injection pressure comes from the main hydraulic pressure that pushes the injection screw, forcing the molten plastic into the cavity. It plays an essential role in the process as it keeps the mold closed. It needs to be high enough to properly fill the entire cavity. Adequate pressure is calculated based on the dimensions and structure of the part.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Packing pressure<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The pressure that is kept on the molten resin after the filling is referred to as packing or holding pressure. It helps secure controlled shrinkage and proper density by preventing backflow of the resin. When it\u2019s too low, it can result in dimensional instability and excessive shrinkage. If it\u2019s too high, it can make the part prone to flash, stress near the gate, and overfilling.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Holding<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">This phase is time-controlled and it refers to the period during which the resin is kept in place under the packing pressure until the point of gate freeze, after which the material begins to cool down. Gate freeze is the stage when no more molten plastic can flow into the gate and the pressure is used to prevent backflow.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Cooling, holding, and injection time<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The time required to fill the mold is short and typically doesn\u2019t exceed 10 seconds. Holding time takes longer and it depends on the part\u2019s wall thickness. However, it shouldn\u2019t exceed the gate freezing point. The duration of cooling depends on the mold temperature and the thickness of the part.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Who are the best plastic injection mold manufacturers?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\"><img decoding=\"async\" class=\"alignright size-full wp-image-1790\" src=\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/plastic-injection-mold-.jpg\" alt=\"plastic injection mold\" width=\"500\" height=\"334\" srcset=\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/plastic-injection-mold-.jpg 500w, https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/plastic-injection-mold--300x200.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>Whether you\u2019d like to know more about <\/span><a href=\"https:\/\/www.wundermold.com\/what-advantage-plastic-injection-molding\/\"><span style=\"font-weight: 400;\">the benefits of injection molding<\/span><\/a><span style=\"font-weight: 400;\">, or you\u2019re curious about <\/span><a href=\"https:\/\/www.wundermold.com\/what-components-plastic-injection-molding-machine\/\"><span style=\"font-weight: 400;\">the essential components of an injection molding machine<\/span><\/a><span style=\"font-weight: 400;\">, Wunder Mold is the team you can rely on. With years of experience and a highly dedicated and knowledgeable team, we\u2019re here to provide you with all the necessary information and high-quality parts for your specific application. Reach out to us by dialing our number or sending an email at <\/span><a href=\"mailto:sales@wundermold.com\"><span style=\"font-weight: 400;\">sales@wundermold.com<\/span><\/a><span style=\"font-weight: 400;\"> and tell us more about your requirements. <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Injection molding is a straightforward process that can yield high-quality parts with high precision. However, it requires a rigorous control system that encompasses both pre and post-production testing in order for the final product to match the required specifications. Let\u2019s explore the process of quality control in more detail, analyzing the steps plastic injection mold [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1788,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1787","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Injection Molding QA Explained | Plastic Injection Mold Manufacturers<\/title>\n<meta name=\"description\" content=\"Continue reading to learn more about the most important process parameters of plastic injection molding and how they affect part quality.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Injection Molding QA Explained | Plastic Injection Mold Manufacturers\" \/>\n<meta property=\"og:description\" content=\"Continue reading to learn more about the most important process parameters of plastic injection molding and how they affect part quality.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/\" \/>\n<meta property=\"og:site_name\" content=\"Wunder-Mold\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-04T10:17:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"682\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\/\/www.wundermold.com\/#\/schema\/person\/ceac11bea3576eb31f6ae7eafac694d5\"},\"headline\":\"Quality Control in Plastic Injection Molding\",\"datePublished\":\"2024-03-04T10:17:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/\"},\"wordCount\":624,\"publisher\":{\"@id\":\"https:\/\/www.wundermold.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg\",\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/\",\"url\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/\",\"name\":\"Injection Molding QA Explained | Plastic Injection Mold Manufacturers\",\"isPartOf\":{\"@id\":\"https:\/\/www.wundermold.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg\",\"datePublished\":\"2024-03-04T10:17:04+00:00\",\"description\":\"Continue reading to learn more about the most important process parameters of plastic injection molding and how they affect part quality.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#primaryimage\",\"url\":\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg\",\"contentUrl\":\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg\",\"width\":1000,\"height\":682,\"caption\":\"What are the quality parameters of plastic injection molding\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.wundermold.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Quality Control in Plastic Injection Molding\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wundermold.com\/#website\",\"url\":\"https:\/\/www.wundermold.com\/\",\"name\":\"Wunder-Mold\",\"description\":\"Injection Molded Ceramics and Plastics\",\"publisher\":{\"@id\":\"https:\/\/www.wundermold.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wundermold.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.wundermold.com\/#organization\",\"name\":\"Wunder-Mold, Inc.\",\"url\":\"https:\/\/www.wundermold.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.wundermold.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2020\/02\/logo.png\",\"contentUrl\":\"https:\/\/www.wundermold.com\/wp-content\/uploads\/2020\/02\/logo.png\",\"width\":215,\"height\":35,\"caption\":\"Wunder-Mold, Inc.\"},\"image\":{\"@id\":\"https:\/\/www.wundermold.com\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wundermold.com\/#\/schema\/person\/ceac11bea3576eb31f6ae7eafac694d5\",\"name\":\"admin\",\"url\":\"https:\/\/www.wundermold.com\/author\/admin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Injection Molding QA Explained | Plastic Injection Mold Manufacturers","description":"Continue reading to learn more about the most important process parameters of plastic injection molding and how they affect part quality.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/","og_locale":"en_US","og_type":"article","og_title":"Injection Molding QA Explained | Plastic Injection Mold Manufacturers","og_description":"Continue reading to learn more about the most important process parameters of plastic injection molding and how they affect part quality.","og_url":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/","og_site_name":"Wunder-Mold","article_published_time":"2024-03-04T10:17:04+00:00","og_image":[{"width":1000,"height":682,"url":"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg","type":"image\/jpeg"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#article","isPartOf":{"@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/"},"author":{"name":"admin","@id":"https:\/\/www.wundermold.com\/#\/schema\/person\/ceac11bea3576eb31f6ae7eafac694d5"},"headline":"Quality Control in Plastic Injection Molding","datePublished":"2024-03-04T10:17:04+00:00","mainEntityOfPage":{"@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/"},"wordCount":624,"publisher":{"@id":"https:\/\/www.wundermold.com\/#organization"},"image":{"@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#primaryimage"},"thumbnailUrl":"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg","inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/","url":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/","name":"Injection Molding QA Explained | Plastic Injection Mold Manufacturers","isPartOf":{"@id":"https:\/\/www.wundermold.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#primaryimage"},"image":{"@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#primaryimage"},"thumbnailUrl":"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg","datePublished":"2024-03-04T10:17:04+00:00","description":"Continue reading to learn more about the most important process parameters of plastic injection molding and how they affect part quality.","breadcrumb":{"@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#primaryimage","url":"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg","contentUrl":"https:\/\/www.wundermold.com\/wp-content\/uploads\/2024\/03\/What-are-the-quality-parameters-of-plastic-injection-molding-1.jpg","width":1000,"height":682,"caption":"What are the quality parameters of plastic injection molding"},{"@type":"BreadcrumbList","@id":"https:\/\/www.wundermold.com\/what-quality-parameters-plastic-injection-molding\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.wundermold.com\/"},{"@type":"ListItem","position":2,"name":"Quality Control in Plastic Injection Molding"}]},{"@type":"WebSite","@id":"https:\/\/www.wundermold.com\/#website","url":"https:\/\/www.wundermold.com\/","name":"Wunder-Mold","description":"Injection Molded Ceramics and Plastics","publisher":{"@id":"https:\/\/www.wundermold.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wundermold.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.wundermold.com\/#organization","name":"Wunder-Mold, Inc.","url":"https:\/\/www.wundermold.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.wundermold.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.wundermold.com\/wp-content\/uploads\/2020\/02\/logo.png","contentUrl":"https:\/\/www.wundermold.com\/wp-content\/uploads\/2020\/02\/logo.png","width":215,"height":35,"caption":"Wunder-Mold, Inc."},"image":{"@id":"https:\/\/www.wundermold.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.wundermold.com\/#\/schema\/person\/ceac11bea3576eb31f6ae7eafac694d5","name":"admin","url":"https:\/\/www.wundermold.com\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/posts\/1787","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/comments?post=1787"}],"version-history":[{"count":1,"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/posts\/1787\/revisions"}],"predecessor-version":[{"id":1791,"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/posts\/1787\/revisions\/1791"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/media\/1788"}],"wp:attachment":[{"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/media?parent=1787"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/categories?post=1787"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wundermold.com\/wp-json\/wp\/v2\/tags?post=1787"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}