{"id":114810,"date":"2025-06-26T11:24:03","date_gmt":"2025-06-26T09:24:03","guid":{"rendered":"https:\/\/xometry.pro\/?post_type=articles&#038;p=114810"},"modified":"2025-07-01T17:31:01","modified_gmt":"2025-07-01T15:31:01","slug":"foam-injection-molding-technology","status":"publish","type":"articles","link":"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/","title":{"rendered":"Foam Injection Molding: Lightweight, Strong Parts with Less Material"},"content":{"rendered":"<div role=\"navigation\" aria-label=\"Table of Contents\" class=\"simpletoc wp-block-simpletoc-toc\"><h2 class=\"simpletoc-title\">Table of Contents<\/h2>\n<ul class=\"simpletoc-list\">\n<li><a href=\"#h-what-is-foam-injection-molding\">What Is Foam Injection Molding?<\/a>\n\n<\/li>\n<li><a href=\"#technical-specifications-of-foam-injection-molding\">Technical Specifications of Foam Injection Molding<\/a>\n\n<\/li>\n<li><a href=\"#foam-molding-compared-to-other-manufacturing-processes\">Foam Molding Compared to Other Manufacturing Processes<\/a>\n\n<\/li>\n<li><a href=\"#materials\">Foam Injection Molding Materials<\/a>\n\n<\/li>\n<li><a href=\"#types-of-foam-injection-molding\">Types of Foam Injection Molding<\/a>\n\n\n<\/li>\n\n<\/li>\n\n<li><a href=\"#how-foam-injection-molding-works\">How Foam Injection Molding Works<\/a>\n\n\n<\/li>\n\n<\/li>\n\n<\/li>\n\n<\/li>\n\n<li><a href=\"#the-bottomline-why-use-foam-injection-molding\">The Bottomline: Why Use Foam Injection Molding?<\/a>\n<\/li><\/ul><\/div>\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-foam-injection-molding\"><strong>What Is Foam Injection Molding?<\/strong><\/h2>\n\n\n<p>Foam molding\u2014also known as structural foam molding\u2014produces rigid plastic parts with an internal cellular core and a solid outer shell. This structure reduces material use and part weight up to 30% while preserving strength and dimensional stability. Engineers use it to manufacture large, rigid components that need to stay lightweight\u2014like dashboards, housings, and panels.<\/p>\n\n\n\n<p>As a rule of thumb, use foam molding when:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Part size is large<\/li>\n\n\n\n<li>Weight reduction is critical<\/li>\n\n\n\n<li>Surface finish is not cosmetic<\/li>\n<\/ul>\n\n\n\n<p>The process blends molten thermoplastic with a chemical or physical blowing agent. Inside the mold, a controlled pressure drop causes the agent to expand, forming uniform gas bubbles (~4 mm diameter). This expansion creates a lightweight internal structure without compromising strength.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"800\" height=\"614\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/EPP-foam-packaging-carrying-case.jpg\" alt=\"EPP foam packaging carrying case\" class=\"wp-image-114880\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/EPP-foam-packaging-carrying-case.jpg 800w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/EPP-foam-packaging-carrying-case-300x230.jpg 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/EPP-foam-packaging-carrying-case-768x589.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/EPP-foam-packaging-carrying-case.jpg\" data-fancybox=\"gallery-114810\" data-caption=\"EPP foam packaging carrying case (Source: Foamtech)\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/EPP-foam-packaging-carrying-case.jpg\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">EPP foam packaging carrying case (Source: <a href=\"https:\/\/www.foamtechchina.com\/custom-molded-foam-products\/\">Foamtech<\/a>)<\/figcaption><\/figure>\n\n\n\n<p>Unlike traditional injection molding, foam molding keeps the foaming process tightly controlled. Expansion happens only after the material fills the cavity. This enables efficient plastic use and supports thicker, more complex geometries that solid molding can\u2019t handle.<\/p>\n\n\n    <aside class=\"article-content-aside\">\r\n        <a href=\"https:\/\/xometry.pro\/en-eu\/articles\/injection-moulding-overview\/\" class=\"aside-image sidebar__aside-image\"><img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/12\/injection-molding-icon-1.png\" alt=\"\"><\/a><a href=\"https:\/\/xometry.pro\/en-eu\/articles\/injection-moulding-overview\/\" class=\"aside-link\">Injection Molding Technology Overview<\/a>    <\/aside>\r\n    \n\n\n<p>Thermal insulation and sound damping are additional benefits\u2014especially important in automotive and aerospace interiors.<\/p>\n\n\n<div class=\"custom-table-block \" id=\"table-id-999\" >\r\n\t<div class=\"search-input-wrapper\">\r\n\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n\t\t\t<path d=\"M15.7812 13.833L12.6659 10.7177C12.5252 10.5771 12.3346 10.499 12.1347 10.499H11.6253C12.4877 9.39596 13.0002 8.00859 13.0002 6.49937C13.0002 2.90909 10.0911 0 6.50083 0C2.91056 0 0.00146484 2.90909 0.00146484 6.49937C0.00146484 10.0896 2.91056 12.9987 6.50083 12.9987C8.01006 12.9987 9.39742 12.4863 10.5004 11.6239V12.1332C10.5004 12.3332 10.5786 12.5238 10.7192 12.6644L13.8345 15.7797C14.1282 16.0734 14.6032 16.0734 14.8938 15.7797L15.778 14.8954C16.0718 14.6017 16.0718 14.1267 15.7812 13.833ZM6.50083 10.499C4.29167 10.499 2.50122 8.71165 2.50122 6.49937C2.50122 4.29021 4.28855 2.49976 6.50083 2.49976C8.70999 2.49976 10.5004 4.28708 10.5004 6.49937C10.5004 8.70852 8.71311 10.499 6.50083 10.499Z\" fill=\"#476175\"\/>\r\n\t\t<\/svg>\r\n\t\t<input type=\"search\" class=\"table-search-input\" id=\"table-search-999\" placeholder=\"Table search\">\r\n\t<\/div>\t\r\n\t<div class=\"table-wrapper\">\r\n\t\t<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 39.8196%;\"><b>Advantages<\/b><\/td>\n<td style=\"width: 60.0515%;\"><b>Disadvantages<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 39.8196%;\"><span style=\"font-weight: 400;\">Up to 30% weight reduction<\/span><\/td>\n<td style=\"width: 60.0515%;\"><span style=\"font-weight: 400;\">Longer cycle times due to foam expansion<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 39.8196%;\"><span style=\"font-weight: 400;\">High strength-to-weight ratio<\/span><\/td>\n<td style=\"width: 60.0515%;\"><span style=\"font-weight: 400;\">Surface defects like swirl marks may occur<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 39.8196%;\"><span style=\"font-weight: 400;\">Excellent thermal &amp; acoustic insulation<\/span><\/td>\n<td style=\"width: 60.0515%;\"><span style=\"font-weight: 400;\">Higher tooling and setup costs<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 39.8196%;\"><span style=\"font-weight: 400;\">Supports large, complex geometries<\/span><\/td>\n<td style=\"width: 60.0515%;\"><span style=\"font-weight: 400;\">Limited surface finish quality for cosmetic applications<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 39.8196%;\"><span style=\"font-weight: 400;\">Lower material use and waste<\/span><\/td>\n<td style=\"width: 60.0515%;\"><span style=\"font-weight: 400;\">Fewer compatible materials compared to standard molding<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t<\/div>\r\n<\/div>\r\n<style>\r\n\t.custom-table-block table{\r\n\t\theight: initial!important;\r\n\t}\r\n\t.search-input-wrapper{\r\n\t\tposition: relative;\r\n\t\tmargin-bottom: 24px;\r\n\t}\r\n\t.search-input-wrapper svg{\r\n\t\tposition: absolute;\r\n\t\ttop:50%;\r\n\t\tleft:12px;\r\n\t\ttransform: translateY(-50%);\r\n\t}\r\n\t.table-search-input{\r\n\t\tpadding: 0 0 0 40px;\r\n\t\tborder:1px solid #C1CAD1;\r\n\t\theight: 44px;\r\n\t\twidth: 201px;\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t}\r\n\t.table-search-input::placeholder{\r\n\t\tcolor:#092C47;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\ttext-align: left;\r\n\t\twhite-space:nowrap;\r\n\t}\r\n\t\r\n\t.custom-table-block thead{\r\n\t\tmargin-bottom: 14px;\r\n\t}\r\n\r\n\t.custom-table-block tbody tr:nth-child(odd){\r\n\t\tbackground-color: #F6F9FF;\r\n\t}\r\n\r\n\t.custom-table-block tbody, .custom-table-block thead, .custom-table-block tr, .custom-table-block td, .custom-table-block th{\r\n\t\theight: initial!important;\r\n\t}\r\n\t\r\n\t.custom-table-block tbody td{\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tpadding: 7px;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 700;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tcolor:#092C47;\r\n\t\tposition: relative;\r\n\t}\r\n\t.custom-table-block thead th:after{\r\n\t\tcontent:\"\";\r\n\t\tdisplay: inline-block;\r\n\t\tbackground-image: url(\"data:image\/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http:\/\/www.w3.org\/2000\/svg'%3E%3Cpath d='M10.585 0.585938L6 5.17094L1.415 0.585938L0 2.00094L6 8.00094L12 2.00094L10.585 0.585938Z' fill='%23476175'\/%3E%3C\/svg%3E%0A\");\r\n\t\tmargin-left: 8px;\r\n\t\tbackground-position: center center;\r\n\t\tbackground-size: 12px 7.5px;\r\n\t\tbackground-repeat: no-repeat;\r\n\t\twidth: 24px;\r\n\t\theight: 12px;\r\n\t}\r\n\t.custom-table-block{\r\n\t\tmargin: 20px 0;\t\r\n\t}\r\n\t.custom-table-block .table-wrapper{\r\n\t\twidth: 100%;\r\n\t\toverflow-x: auto;\r\n\t}\r\n\t@media(max-width: 768px){\r\n\t\t\/* .custom-table-block tbody td{\r\n\t\t\twhite-space: nowrap;\r\n\t\t} *\/\r\n\t\t.custom-table-block .table-wrapper{\r\n\t\t\tmax-width: calc(100vw - 16px);\r\n\t\t}\r\n\t}\r\n<\/style>\r\n\n\n<h2 class=\"wp-block-heading\" id=\"technical-specifications-of-foam-injection-molding\"><strong>Technical Specifications of Foam Injection Molding<\/strong><\/h2>\n\n\n<p>Use the following design rules and parameters to ensure high-quality foam-molded parts:<\/p>\n\n\n<div class=\"custom-table-block \" id=\"table-id-267\" >\r\n\t<div class=\"search-input-wrapper\">\r\n\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n\t\t\t<path d=\"M15.7812 13.833L12.6659 10.7177C12.5252 10.5771 12.3346 10.499 12.1347 10.499H11.6253C12.4877 9.39596 13.0002 8.00859 13.0002 6.49937C13.0002 2.90909 10.0911 0 6.50083 0C2.91056 0 0.00146484 2.90909 0.00146484 6.49937C0.00146484 10.0896 2.91056 12.9987 6.50083 12.9987C8.01006 12.9987 9.39742 12.4863 10.5004 11.6239V12.1332C10.5004 12.3332 10.5786 12.5238 10.7192 12.6644L13.8345 15.7797C14.1282 16.0734 14.6032 16.0734 14.8938 15.7797L15.778 14.8954C16.0718 14.6017 16.0718 14.1267 15.7812 13.833ZM6.50083 10.499C4.29167 10.499 2.50122 8.71165 2.50122 6.49937C2.50122 4.29021 4.28855 2.49976 6.50083 2.49976C8.70999 2.49976 10.5004 4.28708 10.5004 6.49937C10.5004 8.70852 8.71311 10.499 6.50083 10.499Z\" fill=\"#476175\"\/>\r\n\t\t<\/svg>\r\n\t\t<input type=\"search\" class=\"table-search-input\" id=\"table-search-267\" placeholder=\"Table search\">\r\n\t<\/div>\t\r\n\t<div class=\"table-wrapper\">\r\n\t\t<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 15.0773%;\"><b>Parameter<\/b><\/td>\n<td style=\"width: 84.7938%;\"><b>Design Guidance<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0773%;\"><b>Materials<\/b><\/td>\n<td style=\"width: 84.7938%;\"><span style=\"font-weight: 400;\">Use expanded thermoplastics such as EPP, EPS, EPO. Choose based on mechanical needs, flexibility, and thermal resistance<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0773%;\"><b>Build Size<\/b><\/td>\n<td style=\"width: 84.7938%;\"><span style=\"font-weight: 400;\">Parts can reach up to 1,500 mm in length, depending on material and molding setup. Design large components in a single shot when feasible.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0773%;\"><b>Wall thickness<\/b><\/td>\n<td style=\"width: 84.7938%;\"><span style=\"font-weight: 400;\">Maintain a uniform wall thickness of at least 8 mm. Avoid thick ribs and sharp transitions to ensure even filling and foaming. Use dual-wall designs where necessary.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0773%;\"><b>Tolerances<\/b><\/td>\n<td style=\"width: 84.7938%;\"><span style=\"font-weight: 400;\">Vary with part density and geometry. Discuss tolerances during DFM to account for foam expansion and shrinkage.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0773%;\"><b>Surface Finish<\/b><\/td>\n<td style=\"width: 84.7938%;\"><span style=\"font-weight: 400;\">Expect swirl marks or textured areas due to foaming. However, gate vestiges will not appear. Don\u2019t use for high-cosmetic surfaces.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0773%;\"><b>Production Volume<\/b><\/td>\n<td style=\"width: 84.7938%;\"><span style=\"font-weight: 400;\">Best suited for medium to high volumes\u2014typically from 50 up to 100,000+ units. For prototypes or very low quantities, consider alternative methods. Minimum order quantities depend on the raw material, with both part volume and required quantity playing a key role.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0773%;\"><b>Design guidance<\/b><\/td>\n<td style=\"width: 84.7938%;\"><span style=\"font-weight: 400;\">\u2022 Apply 1\u00b0 draft per feature height for demolding<\/span> <span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Use a 20 mm flat gate surface to ensure proper filling<\/span> <span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Optimize rib geometry for smooth flow and full cavity fill<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t<\/div>\r\n<\/div>\r\n<style>\r\n\t.custom-table-block table{\r\n\t\theight: initial!important;\r\n\t}\r\n\t.search-input-wrapper{\r\n\t\tposition: relative;\r\n\t\tmargin-bottom: 24px;\r\n\t}\r\n\t.search-input-wrapper svg{\r\n\t\tposition: absolute;\r\n\t\ttop:50%;\r\n\t\tleft:12px;\r\n\t\ttransform: translateY(-50%);\r\n\t}\r\n\t.table-search-input{\r\n\t\tpadding: 0 0 0 40px;\r\n\t\tborder:1px solid #C1CAD1;\r\n\t\theight: 44px;\r\n\t\twidth: 201px;\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t}\r\n\t.table-search-input::placeholder{\r\n\t\tcolor:#092C47;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\ttext-align: left;\r\n\t\twhite-space:nowrap;\r\n\t}\r\n\t\r\n\t.custom-table-block thead{\r\n\t\tmargin-bottom: 14px;\r\n\t}\r\n\r\n\t.custom-table-block tbody tr:nth-child(odd){\r\n\t\tbackground-color: #F6F9FF;\r\n\t}\r\n\r\n\t.custom-table-block tbody, .custom-table-block thead, .custom-table-block tr, .custom-table-block td, .custom-table-block th{\r\n\t\theight: initial!important;\r\n\t}\r\n\t\r\n\t.custom-table-block tbody td{\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tpadding: 7px;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 700;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tcolor:#092C47;\r\n\t\tposition: relative;\r\n\t}\r\n\t.custom-table-block thead th:after{\r\n\t\tcontent:\"\";\r\n\t\tdisplay: inline-block;\r\n\t\tbackground-image: url(\"data:image\/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http:\/\/www.w3.org\/2000\/svg'%3E%3Cpath d='M10.585 0.585938L6 5.17094L1.415 0.585938L0 2.00094L6 8.00094L12 2.00094L10.585 0.585938Z' fill='%23476175'\/%3E%3C\/svg%3E%0A\");\r\n\t\tmargin-left: 8px;\r\n\t\tbackground-position: center center;\r\n\t\tbackground-size: 12px 7.5px;\r\n\t\tbackground-repeat: no-repeat;\r\n\t\twidth: 24px;\r\n\t\theight: 12px;\r\n\t}\r\n\t.custom-table-block{\r\n\t\tmargin: 20px 0;\t\r\n\t}\r\n\t.custom-table-block .table-wrapper{\r\n\t\twidth: 100%;\r\n\t\toverflow-x: auto;\r\n\t}\r\n\t@media(max-width: 768px){\r\n\t\t\/* .custom-table-block tbody td{\r\n\t\t\twhite-space: nowrap;\r\n\t\t} *\/\r\n\t\t.custom-table-block .table-wrapper{\r\n\t\t\tmax-width: calc(100vw - 16px);\r\n\t\t}\r\n\t}\r\n<\/style>\r\n\n\n<h2 class=\"wp-block-heading\" id=\"foam-molding-compared-to-other-manufacturing-processes\"><strong>Foam Molding Compared to Other Manufacturing Processes<\/strong><\/h2>\n\n\n<p>Foam injection is unique in many different ways compared to compression molding or traditional processes. Here\u2019s a detailed comparison:<\/p>\n\n\n<div class=\"custom-table-block table-with-white-space\" id=\"table-id-243\" >\r\n\t<div class=\"search-input-wrapper\">\r\n\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n\t\t\t<path d=\"M15.7812 13.833L12.6659 10.7177C12.5252 10.5771 12.3346 10.499 12.1347 10.499H11.6253C12.4877 9.39596 13.0002 8.00859 13.0002 6.49937C13.0002 2.90909 10.0911 0 6.50083 0C2.91056 0 0.00146484 2.90909 0.00146484 6.49937C0.00146484 10.0896 2.91056 12.9987 6.50083 12.9987C8.01006 12.9987 9.39742 12.4863 10.5004 11.6239V12.1332C10.5004 12.3332 10.5786 12.5238 10.7192 12.6644L13.8345 15.7797C14.1282 16.0734 14.6032 16.0734 14.8938 15.7797L15.778 14.8954C16.0718 14.6017 16.0718 14.1267 15.7812 13.833ZM6.50083 10.499C4.29167 10.499 2.50122 8.71165 2.50122 6.49937C2.50122 4.29021 4.28855 2.49976 6.50083 2.49976C8.70999 2.49976 10.5004 4.28708 10.5004 6.49937C10.5004 8.70852 8.71311 10.499 6.50083 10.499Z\" fill=\"#476175\"\/>\r\n\t\t<\/svg>\r\n\t\t<input type=\"search\" class=\"table-search-input\" id=\"table-search-243\" placeholder=\"Table search\">\r\n\t<\/div>\t\r\n\t<div class=\"table-wrapper\">\r\n\t\t<table style=\"border-collapse: collapse; width: 100%; height: 1128px;\">\n<tbody>\n<tr style=\"height: 48px;\">\n<td style=\"width: 19.0722%; height: 48px;\"><b>Technology<\/b><\/td>\n<td style=\"width: 23.3247%; height: 48px;\"><b>Foam Molding<\/b><\/td>\n<td style=\"width: 35.4381%; height: 48px;\"><b>Traditional Injection Molding<\/b><\/td>\n<td style=\"width: 22.0361%; height: 48px;\"><b>Compression Molding<\/b><\/td>\n<\/tr>\n<tr style=\"height: 96px;\">\n<td style=\"width: 19.0722%; height: 96px;\"><b>Best For<\/b><\/td>\n<td style=\"width: 23.3247%; height: 96px;\"><span style=\"font-weight: 400;\">Lightweight structural parts with thick walls and moderate surface demands<\/span><\/td>\n<td style=\"width: 35.4381%; height: 96px;\"><span style=\"font-weight: 400;\">Highly detailed plastic parts with tight tolerances and cosmetic finishes<\/span><\/td>\n<td style=\"width: 22.0361%; height: 96px;\"><span style=\"font-weight: 400;\">Low-volume rubber or thermoset parts with basic shapes<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 19.0722%; height: 48px;\"><b>Optimal Quantity Range<\/b><\/td>\n<td style=\"width: 23.3247%; height: 48px;\"><span style=\"font-weight: 400;\">&gt; 200 (depending on raw material minimum order quantity<\/span><span style=\"font-weight: 400;\">)\u00a0<\/span><\/td>\n<td style=\"width: 35.4381%; height: 48px;\"><span style=\"font-weight: 400;\">50 \u2013 1,000,000<\/span><\/td>\n<td style=\"width: 22.0361%; height: 48px;\"><span style=\"font-weight: 400;\">1 \u2013 5,000<\/span><\/td>\n<\/tr>\n<tr style=\"height: 72px;\">\n<td style=\"width: 19.0722%; height: 72px;\"><b>Lead Time<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\">(available at Xometry)<\/span><\/td>\n<td style=\"width: 23.3247%; height: 72px;\"><span style=\"font-weight: 400;\">38 days<\/span><\/td>\n<td style=\"width: 35.4381%; height: 72px;\"><span style=\"font-weight: 400;\">38 days<\/span><\/td>\n<td style=\"width: 22.0361%; height: 72px;\"><span style=\"font-weight: 400;\">20 days<\/span><\/td>\n<\/tr>\n<tr style=\"height: 96px;\">\n<td style=\"width: 19.0722%; height: 96px;\"><b>Maximum Part Size <\/b><span style=\"font-weight: 400;\">(available at Xometry)<\/span><\/td>\n<td style=\"width: 23.3247%; height: 96px;\"><span style=\"font-weight: 400;\">Typically 1000 \u00d7 1500 \u00d7 500 mm, but it depends on material and molding method<\/span><\/td>\n<td style=\"width: 35.4381%; height: 96px;\"><span style=\"font-weight: 400;\">1289 \u00d7 1910 \u00d7 1006 mm<\/span><\/td>\n<td style=\"width: 22.0361%; height: 96px;\"><span style=\"font-weight: 400;\">500&#215;500 mm<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 19.0722%; height: 48px;\"><b>Mould Life<\/b><\/td>\n<td style=\"width: 23.3247%; height: 48px;\"><span style=\"font-weight: 400;\">10,000 \u2013 1,000,000 shots<\/span><\/td>\n<td style=\"width: 35.4381%; height: 48px;\"><span style=\"font-weight: 400;\">10,000 \u2013 1,000,000 shots<\/span><\/td>\n<td style=\"width: 22.0361%; height: 48px;\"><span style=\"font-weight: 400;\">10,000 \u2013 1,000,000 shots<\/span><\/td>\n<\/tr>\n<tr style=\"height: 72px;\">\n<td style=\"width: 19.0722%; height: 72px;\"><b>Material Selection<\/b><\/td>\n<td style=\"width: 23.3247%; height: 72px;\"><span style=\"font-weight: 400;\">Expanded thermoplastics (EPP, EPS, EPO)<\/span><\/td>\n<td style=\"width: 35.4381%; height: 72px;\"><span style=\"font-weight: 400;\">Any thermosets\/thermoplastics<\/span><\/td>\n<td style=\"width: 22.0361%; height: 72px;\"><span style=\"font-weight: 400;\">Rubbers, silicone materials<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.0722%; height: 24px;\"><b>Prototyping<\/b><\/td>\n<td style=\"width: 23.3247%; height: 24px;\"><span style=\"font-weight: 400;\">\u2b50<\/span><\/td>\n<td style=\"width: 35.4381%; height: 24px;\"><span style=\"font-weight: 400;\">\u2b50<\/span><\/td>\n<td style=\"width: 22.0361%; height: 24px;\"><span style=\"font-weight: 400;\">\u2b50\u2b50\u2b50<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 19.0722%; height: 48px;\"><b>High-Volume Production<\/b><\/td>\n<td style=\"width: 23.3247%; height: 48px;\"><span style=\"font-weight: 400;\">\u2b50\u2b50<\/span><\/td>\n<td style=\"width: 35.4381%; height: 48px;\"><span style=\"font-weight: 400;\">\u2b50\u2b50\u2b50<\/span><\/td>\n<td style=\"width: 22.0361%; height: 48px;\"><span style=\"font-weight: 400;\">\u2b50<\/span><\/td>\n<\/tr>\n<tr style=\"height: 72px;\">\n<td style=\"width: 19.0722%; height: 72px;\"><b>Part Design Complexity<\/b><\/td>\n<td style=\"width: 23.3247%; height: 72px;\"><span style=\"font-weight: 400;\">\u2b50\u2b50<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">Supports ribs and thick walls<\/span><\/td>\n<td style=\"width: 35.4381%; height: 72px;\"><span style=\"font-weight: 400;\">\u2b50\u2b50\u2b50<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">Handles thin, complex geometries<\/span><\/td>\n<td style=\"width: 22.0361%; height: 72px;\"><span style=\"font-weight: 400;\">\u2b50\u2b50<br \/>\n<\/span><span style=\"font-weight: 400;\">Simple shapes work best<\/span><\/td>\n<\/tr>\n<tr style=\"height: 72px;\">\n<td style=\"width: 19.0722%; height: 72px;\"><b>Standard Surface Finish<\/b><\/td>\n<td style=\"width: 23.3247%; height: 72px;\"><span style=\"font-weight: 400;\">\u2b50\u2b50<br \/>\n<\/span><span style=\"font-weight: 400;\">May show swirls or texture<\/span><\/td>\n<td style=\"width: 35.4381%; height: 72px;\"><span style=\"font-weight: 400;\">\u2b50\u2b50\u2b50<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">Smooth, detailed surfaces<\/span><\/td>\n<td style=\"width: 22.0361%; height: 72px;\"><span style=\"font-weight: 400;\">\u2b50\u2b50<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">Less suited for cosmetic parts<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.0722%; height: 24px;\"><b>Post-Processing<\/b><\/td>\n<td style=\"width: 23.3247%; height: 24px;\"><span style=\"font-weight: 400;\">No<\/span><\/td>\n<td style=\"width: 35.4381%; height: 24px;\"><span style=\"font-weight: 400;\">No<\/span><\/td>\n<td style=\"width: 22.0361%; height: 24px;\"><span style=\"font-weight: 400;\">No<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 19.0722%; height: 48px;\"><b>Cost of Design Mistakes<\/b><\/td>\n<td style=\"width: 23.3247%; height: 48px;\"><span style=\"font-weight: 400;\">Moderate<\/span><\/td>\n<td style=\"width: 35.4381%; height: 48px;\"><span style=\"font-weight: 400;\">High<\/span><\/td>\n<td style=\"width: 22.0361%; height: 48px;\"><span style=\"font-weight: 400;\">Lower<\/span><\/td>\n<\/tr>\n<tr style=\"height: 168px;\">\n<td style=\"width: 19.0722%; height: 168px;\"><b>Advantages<\/b><\/td>\n<td style=\"width: 23.3247%; height: 168px;\"><span style=\"font-weight: 400;\">\u2022 Lightweight, strong parts<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Thicker walls without sink marks<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Lower material usage<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Good thermal\/acoustic insulation<\/span><\/td>\n<td style=\"width: 35.4381%; height: 168px;\"><span style=\"font-weight: 400;\">\u2022 High repeatability for consistent part quality<br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Ideal for large production volumes<br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Extensive material options to suit diverse applications<br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Ability to meet custom colour requirements, ensuring precise tones<\/span><\/td>\n<td style=\"width: 22.0361%; height: 168px;\"><span style=\"font-weight: 400;\">\u2022 Go-to process for specific rubber or thermoset applications, e. g. NBR and FFKM<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Cost-effective tooling for production runs of up to 5,000 pieces<\/span><\/td>\n<\/tr>\n<tr style=\"height: 192px;\">\n<td style=\"width: 19.0722%; height: 192px;\"><b>Disadvantages<\/b><\/td>\n<td style=\"width: 23.3247%; height: 192px;\"><span style=\"font-weight: 400;\">\u2022 Lower surface finish<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Not suited for thin walls<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Longer cycle times<\/span><\/td>\n<td style=\"width: 35.4381%; height: 192px;\"><span style=\"font-weight: 400;\">\u2022 High upfront investment in mould tooling<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 High costs for mould modifications or improvements, particularly if the design is not frozen before mould production<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Limited flexibility for highly complex or intricate designs<\/span><\/td>\n<td style=\"width: 22.0361%; height: 192px;\"><span style=\"font-weight: 400;\">\u2022 Limited material options<br \/>\n\u2022 <\/span><span style=\"font-family: inherit; font-size: inherit;\">Limited design complexity<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t<\/div>\r\n<\/div>\r\n<style>\r\n\t.custom-table-block table{\r\n\t\theight: initial!important;\r\n\t}\r\n\t.search-input-wrapper{\r\n\t\tposition: relative;\r\n\t\tmargin-bottom: 24px;\r\n\t}\r\n\t.search-input-wrapper svg{\r\n\t\tposition: absolute;\r\n\t\ttop:50%;\r\n\t\tleft:12px;\r\n\t\ttransform: translateY(-50%);\r\n\t}\r\n\t.table-search-input{\r\n\t\tpadding: 0 0 0 40px;\r\n\t\tborder:1px solid #C1CAD1;\r\n\t\theight: 44px;\r\n\t\twidth: 201px;\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t}\r\n\t.table-search-input::placeholder{\r\n\t\tcolor:#092C47;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\ttext-align: left;\r\n\t\twhite-space:nowrap;\r\n\t}\r\n\t\r\n\t.custom-table-block thead{\r\n\t\tmargin-bottom: 14px;\r\n\t}\r\n\r\n\t.custom-table-block tbody tr:nth-child(odd){\r\n\t\tbackground-color: #F6F9FF;\r\n\t}\r\n\r\n\t.custom-table-block tbody, .custom-table-block thead, .custom-table-block tr, .custom-table-block td, .custom-table-block th{\r\n\t\theight: initial!important;\r\n\t}\r\n\t\r\n\t.custom-table-block tbody td{\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tpadding: 7px;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 700;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tcolor:#092C47;\r\n\t\tposition: relative;\r\n\t}\r\n\t.custom-table-block thead th:after{\r\n\t\tcontent:\"\";\r\n\t\tdisplay: inline-block;\r\n\t\tbackground-image: url(\"data:image\/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http:\/\/www.w3.org\/2000\/svg'%3E%3Cpath d='M10.585 0.585938L6 5.17094L1.415 0.585938L0 2.00094L6 8.00094L12 2.00094L10.585 0.585938Z' fill='%23476175'\/%3E%3C\/svg%3E%0A\");\r\n\t\tmargin-left: 8px;\r\n\t\tbackground-position: center center;\r\n\t\tbackground-size: 12px 7.5px;\r\n\t\tbackground-repeat: no-repeat;\r\n\t\twidth: 24px;\r\n\t\theight: 12px;\r\n\t}\r\n\t.custom-table-block{\r\n\t\tmargin: 20px 0;\t\r\n\t}\r\n\t.custom-table-block .table-wrapper{\r\n\t\twidth: 100%;\r\n\t\toverflow-x: auto;\r\n\t}\r\n\t@media(max-width: 768px){\r\n\t\t\/* .custom-table-block tbody td{\r\n\t\t\twhite-space: nowrap;\r\n\t\t} *\/\r\n\t\t.custom-table-block .table-wrapper{\r\n\t\t\tmax-width: calc(100vw - 16px);\r\n\t\t}\r\n\t}\r\n<\/style>\r\n\n\n    <aside class=\"article-content-aside\">\r\n        <a href=\"https:\/\/xometry.pro\/en-eu\/articles\/compression-molding-overview\/\" class=\"aside-image sidebar__aside-image\"><img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/07\/compression-moulded-parts.jpeg\" alt=\"\"><\/a><a href=\"https:\/\/xometry.pro\/en-eu\/articles\/compression-molding-overview\/\" class=\"aside-link\">Compression Molding: Technology Overview<\/a>    <\/aside>\r\n    \n\n<h2 class=\"wp-block-heading\" id=\"materials\"><strong>Foam Injection Molding Materials<\/strong><\/h2>\n\n\n<p>Choose your material based on performance needs, environmental exposure, and design priorities. Below are the most common options with their key traits and ideal applications:<\/p>\n\n\n<div class=\"custom-table-block table-with-white-space\" id=\"table-id-139\" >\r\n\t<div class=\"search-input-wrapper\">\r\n\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n\t\t\t<path d=\"M15.7812 13.833L12.6659 10.7177C12.5252 10.5771 12.3346 10.499 12.1347 10.499H11.6253C12.4877 9.39596 13.0002 8.00859 13.0002 6.49937C13.0002 2.90909 10.0911 0 6.50083 0C2.91056 0 0.00146484 2.90909 0.00146484 6.49937C0.00146484 10.0896 2.91056 12.9987 6.50083 12.9987C8.01006 12.9987 9.39742 12.4863 10.5004 11.6239V12.1332C10.5004 12.3332 10.5786 12.5238 10.7192 12.6644L13.8345 15.7797C14.1282 16.0734 14.6032 16.0734 14.8938 15.7797L15.778 14.8954C16.0718 14.6017 16.0718 14.1267 15.7812 13.833ZM6.50083 10.499C4.29167 10.499 2.50122 8.71165 2.50122 6.49937C2.50122 4.29021 4.28855 2.49976 6.50083 2.49976C8.70999 2.49976 10.5004 4.28708 10.5004 6.49937C10.5004 8.70852 8.71311 10.499 6.50083 10.499Z\" fill=\"#476175\"\/>\r\n\t\t<\/svg>\r\n\t\t<input type=\"search\" class=\"table-search-input\" id=\"table-search-139\" placeholder=\"Table search\">\r\n\t<\/div>\t\r\n\t<div class=\"table-wrapper\">\r\n\t\t<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 17.5258%;\"><b>Material<\/b><\/td>\n<td style=\"width: 17.268%;\"><b>Key Properties<\/b><\/td>\n<td style=\"width: 21.134%;\"><b>Applications<\/b><\/td>\n<td style=\"width: 17.3969%;\"><b>Strength &amp; Shape Retention<\/b><\/td>\n<td style=\"width: 26.5464%;\"><b>Use When<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 17.5258%;\"><b>EPP<\/b><span style=\"font-weight: 400;\"> (Expanded Polypropylene)<\/span><\/td>\n<td style=\"width: 17.268%;\"><span style=\"font-weight: 400;\">\u2022 High impact resistance<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Lightweight<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Good thermal insulation<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Chemical and water resistance<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Recyclable<\/span><\/td>\n<td style=\"width: 21.134%;\"><span style=\"font-weight: 400;\">\u2022 Automotive components (e.g., bumpers, headrests)<br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Reusable packaging<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 HVAC parts<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Sports equipment<\/span><\/td>\n<td style=\"width: 17.3969%;\"><span style=\"font-weight: 400;\">\u2022 High resilience<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Retains shape after multiple impacts<\/span><\/td>\n<td style=\"width: 26.5464%;\"><span style=\"font-weight: 400;\">You need durable, reusable parts that absorb energy and maintain form under repeated stress<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 17.5258%;\"><b>EPS <\/b><span style=\"font-weight: 400;\">(Expanded Polystyrene)<\/span><\/td>\n<td style=\"width: 17.268%;\"><span style=\"font-weight: 400;\">\u2022 Rigid and lightweight<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Excellent thermal insulation<br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Moisture resistant<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Cost-effective<\/span><\/td>\n<td style=\"width: 21.134%;\"><span style=\"font-weight: 400;\">\u2022 Building insulation<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Protective packaging<br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Disposable food containers<\/span><\/td>\n<td style=\"width: 17.3969%;\"><span style=\"font-weight: 400;\">\u2022 Moderate strength<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Brittle; limited shape retention after impact<\/span><\/td>\n<td style=\"width: 26.5464%;\"><span style=\"font-weight: 400;\">You need low-cost insulation or single-use packaging with minimal structural load<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 17.5258%;\"><b>EPO <\/b><span style=\"font-weight: 400;\">(Expanded Polyolefin)<\/span><\/td>\n<td style=\"width: 17.268%;\"><span style=\"font-weight: 400;\">\u2022 Blend of polyethylene and polystyrene<br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Lightweight<br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Good impact resistance<br \/>\n<\/span><span style=\"font-weight: 400;\">\u2022 Moldable into complex shapes<\/span><\/td>\n<td style=\"width: 21.134%;\"><span style=\"font-weight: 400;\">\u2022 Model aircraft<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 UAV components<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Disposable packaging<\/span><\/td>\n<td style=\"width: 17.3969%;\"><span style=\"font-weight: 400;\">\u2022 Moderate resilience<br \/>\n<\/span><span style=\"font-family: inherit; font-size: inherit;\">\u2022 Less durable than EPP<\/span><\/td>\n<td style=\"width: 26.5464%;\"><span style=\"font-weight: 400;\">You need parts with complex geometries and moderate toughness\u2014where EPP is overkill<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t<\/div>\r\n<\/div>\r\n<style>\r\n\t.custom-table-block table{\r\n\t\theight: initial!important;\r\n\t}\r\n\t.search-input-wrapper{\r\n\t\tposition: relative;\r\n\t\tmargin-bottom: 24px;\r\n\t}\r\n\t.search-input-wrapper svg{\r\n\t\tposition: absolute;\r\n\t\ttop:50%;\r\n\t\tleft:12px;\r\n\t\ttransform: translateY(-50%);\r\n\t}\r\n\t.table-search-input{\r\n\t\tpadding: 0 0 0 40px;\r\n\t\tborder:1px solid #C1CAD1;\r\n\t\theight: 44px;\r\n\t\twidth: 201px;\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t}\r\n\t.table-search-input::placeholder{\r\n\t\tcolor:#092C47;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\ttext-align: left;\r\n\t\twhite-space:nowrap;\r\n\t}\r\n\t\r\n\t.custom-table-block thead{\r\n\t\tmargin-bottom: 14px;\r\n\t}\r\n\r\n\t.custom-table-block tbody tr:nth-child(odd){\r\n\t\tbackground-color: #F6F9FF;\r\n\t}\r\n\r\n\t.custom-table-block tbody, .custom-table-block thead, .custom-table-block tr, .custom-table-block td, .custom-table-block th{\r\n\t\theight: initial!important;\r\n\t}\r\n\t\r\n\t.custom-table-block tbody td{\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tpadding: 7px;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 700;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tcolor:#092C47;\r\n\t\tposition: relative;\r\n\t}\r\n\t.custom-table-block thead th:after{\r\n\t\tcontent:\"\";\r\n\t\tdisplay: inline-block;\r\n\t\tbackground-image: url(\"data:image\/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http:\/\/www.w3.org\/2000\/svg'%3E%3Cpath d='M10.585 0.585938L6 5.17094L1.415 0.585938L0 2.00094L6 8.00094L12 2.00094L10.585 0.585938Z' fill='%23476175'\/%3E%3C\/svg%3E%0A\");\r\n\t\tmargin-left: 8px;\r\n\t\tbackground-position: center center;\r\n\t\tbackground-size: 12px 7.5px;\r\n\t\tbackground-repeat: no-repeat;\r\n\t\twidth: 24px;\r\n\t\theight: 12px;\r\n\t}\r\n\t.custom-table-block{\r\n\t\tmargin: 20px 0;\t\r\n\t}\r\n\t.custom-table-block .table-wrapper{\r\n\t\twidth: 100%;\r\n\t\toverflow-x: auto;\r\n\t}\r\n\t@media(max-width: 768px){\r\n\t\t\/* .custom-table-block tbody td{\r\n\t\t\twhite-space: nowrap;\r\n\t\t} *\/\r\n\t\t.custom-table-block .table-wrapper{\r\n\t\t\tmax-width: calc(100vw - 16px);\r\n\t\t}\r\n\t}\r\n<\/style>\r\n\n\n\n<p>The foaming technique used\u2014chemical, physical, or hybrid\u2014has a direct impact on the material during molding, affecting how it expands and solidifies within the mold. Each method influences the size, distribution, and uniformity of foam cells, which in turn determines the mechanical behavior and performance of the final part.<\/p>\n\n\n\n<p>The diagram below illustrates the effects of these different techniques on polypropylene (PP). The accompanying micrographs show how foam formation increases, with clear variations in bubble size and distribution.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"1024\" height=\"410\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/cellular-structure-pp-1024x410.webp\" alt=\"Micrographs illustrate the cellular structure of polypropylene (PP) under three foaming methods\" class=\"wp-image-114856\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/cellular-structure-pp-1024x410.webp 1024w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/cellular-structure-pp-300x120.webp 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/cellular-structure-pp-768x307.webp 768w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/cellular-structure-pp.webp 1134w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/cellular-structure-pp.webp\" data-fancybox=\"gallery-114810\" data-caption=\"Micrographs illustrate the cellular structure of polypropylene (PP) under three foaming methods (Source: MDPI)\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/cellular-structure-pp.webp\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">Micrographs illustrate the cellular structure of polypropylene (PP) under three foaming methods (Source: <a href=\"https:\/\/www.mdpi.com\/2073-4360\/11\/11\/1896\" target=\"_blank\" rel=\"noreferrer noopener\">MDPI<\/a>)<\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"types-of-foam-injection-molding\"><strong>Types of Foam Injection Molding<\/strong><\/h2>\n\n\n<p>There are various methods for generating foam within a polymer matrix. These differences influence material properties, processing conditions, and the suitability of applications.<\/p>\n\n\n\n<p>The three main types are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Physical foaming&nbsp;<\/li>\n\n\n\n<li>Chemical foaming<\/li>\n\n\n\n<li>Structural foaming<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"physical-foaming\"><strong>Physical Foaming<\/strong><\/h3>\n\n\n<p>The physical foaming process involves forcing unreactive gas, such as nitrogen or carbon dioxide, into the polymer melt under high pressure. This forces the gas to fuse into the molten polymer. During the injection process, the pressure is reduced, and gas is forced to come out, forming bubbles within the molten polymer.<\/p>\n\n\n\n<p>It is best when you need good finish and no chemicals.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"1024\" height=\"466\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/Gas-Assisted-Injection-Molding-System-1024x466.png\" alt=\"Schematic of a Gas-Assisted Injection Molding System\" class=\"wp-image-114868\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/Gas-Assisted-Injection-Molding-System-1024x466.png 1024w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/Gas-Assisted-Injection-Molding-System-300x136.png 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/Gas-Assisted-Injection-Molding-System-768x349.png 768w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/Gas-Assisted-Injection-Molding-System-1536x698.png 1536w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/Gas-Assisted-Injection-Molding-System.png 1590w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/Gas-Assisted-Injection-Molding-System.png\" data-fancybox=\"gallery-114810\" data-caption=\"This diagram illustrates the key components of a gas-assisted injection molding process, including the injection molding machine, gas pressure regulating system, gas injection control system, and nitrogen (N\u2082) gas supply (Source: MDPI)\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/Gas-Assisted-Injection-Molding-System.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">This diagram illustrates the key components of a gas-assisted injection molding process, including the injection molding machine, gas pressure regulating system, gas injection control system, and nitrogen (N\u2082) gas supply (Source: <a href=\"https:\/\/www.mdpi.com\/2073-4360\/14\/1\/173\" target=\"_blank\" rel=\"noreferrer noopener\">MDPI<\/a>)<\/figcaption><\/figure>\n\n\n\n<p><strong>Key Benefits:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Environmentally friendly process with no chemical reactions involved<\/li>\n\n\n\n<li>Reduces material usage while maintaining structural integrity.<\/li>\n\n\n\n<li>Improves surface finish and dimensional stability.<\/li>\n\n\n\n<li>Allows for the production of complex geometries with uniform wall thickness.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"chemical-foaming\"><strong>Chemical Foaming<\/strong><\/h3>\n\n\n<p>This method uses chemical reactions to produce gas bubbles within the molten polymer. It involves heating chemical blowing agents and a polymer mixture, which releases gas (nitrogen or carbon dioxide) and causes foaming. Chemical foaming is typically the same as other injection molding techniques. Heating, mixing, plasticizing, and most processes occur in an injection molding machine.<\/p>\n\n\n\n<p>Ideal when cycle time and cost are priorities.<\/p>\n\n\n\n<p><strong>Key Benefits:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Enables precise control over cell size and density through selection of specific chemical blowing agents (CBAs).<\/li>\n\n\n\n<li>Reduces material usage and part weight, leading to cost savings.<\/li>\n\n\n\n<li>Improves dimensional stability and reduces warpage.<\/li>\n\n\n\n<li>Eliminates sink marks, enhancing surface finish.<\/li>\n\n\n\n<li>Allows for faster cycle times and lower clamping pressures.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"structural-foaming\"><strong>Structural Foaming<\/strong><\/h3>\n\n\n<p>Structural foaming is a hybrid process that benefits from traditional injection molding and new foaming technology. Chemical or physical blowing agents are used in creating a microcellular foam structure, but chemical agents are mostly used.<\/p>\n\n\n\n<p>The main difference between structural foaming and chemical foaming is the injection pressure. Structural foaming operates at a lower pressure, which allows the core to be foamed as gases expand while the outer layer remains solid.<\/p>\n\n\n\n<p>Best option when you need low-pressure molding for large parts.<\/p>\n\n\n\n<p><strong>Key Benefits:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Produces parts with a high stiffness-to-weight ratio\u2014lightweight yet durable.<\/li>\n\n\n\n<li>Enables molding of intricate geometries using low-cost molds.<\/li>\n\n\n\n<li>Suitable for manufacturing extra-large parts.<\/li>\n\n\n\n<li>Reduces material usage and cycle times, enhancing production efficiency.<\/li>\n<\/ul>\n\n\n<h2 class=\"wp-block-heading\" id=\"how-foam-injection-molding-works\"><strong>How Foam Injection Molding Works<\/strong><\/h2>\n\n\n<p>Foam injection molding combines conventional injection molding with a foaming stage to produce lightweight parts with a cellular core and solid outer skin. The process involves selecting the right material and foaming agent, then carefully controlling temperature, pressure, and mold design to ensure uniform foaming and part quality.<\/p>\n\n\n\n\n<h3 class=\"wp-block-heading\" id=\"step-1-select-the-right-polymer\"><strong>Step 1: Select the Right Polymer<\/strong><\/h3>\n\n\n<p>Choose a thermoplastic that matches your performance goals.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use <strong>EPP<\/strong> for high impact resistance and shape recovery<\/li>\n\n\n\n<li>Use <strong>EPS<\/strong> for rigid, low-cost insulation<\/li>\n\n\n\n<li>Use <strong>EPO<\/strong> for complex geometries with moderate strength<\/li>\n<\/ul>\n\n\n    <section class=\"article-author-block\">\r\n        <div class=\"article-content-wrapper\">\r\n            <div class=\"author-block\">\r\n                            <\/div>\r\n                <div class=\"quote-block\" style=\"border-color: #0E6AED;\">\r\n                    <p><strong>Pro Tip<\/strong>: Foam quality starts with correct material selection\u2014match the polymer to your part\u2019s mechanical, thermal, and chemical requirements.<\/p>\n                <\/div>\r\n        <\/div>\r\n    <\/section>\r\n\n\n<h3 class=\"wp-block-heading\" id=\"step-2-add-a-foaming-agent\"><strong>Step 2: Add a Foaming Agent<\/strong><\/h3>\n\n\n<p>Choose the foaming method based on cell structure and environmental needs:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chemical agents<\/strong> (e.g. azodicarbonamide, sodium bicarbonate) release gas when heated<\/li>\n\n\n\n<li><strong>Physical agents<\/strong> (e.g. nitrogen, carbon dioxide) are injected under high pressure<\/li>\n<\/ul>\n\n\n    <section class=\"article-author-block\">\r\n        <div class=\"article-content-wrapper\">\r\n            <div class=\"author-block\">\r\n                            <\/div>\r\n                <div class=\"quote-block\" style=\"border-color: #0E6AED;\">\r\n                    <p><strong>Pro Tip<\/strong>: Chemical agents offer tighter control over bubble size. Physical agents provide a cleaner process without chemical residue.<\/p>\n                <\/div>\r\n        <\/div>\r\n    <\/section>\r\n\n\n<h3 class=\"wp-block-heading\" id=\"step-3-inject-the-molten-mixture\"><strong>Step 3: Inject the Molten Mixture<\/strong><\/h3>\n\n\n<p>Heat and mix the polymer and blowing agent into a uniform melt. Then inject it into the mold cavity.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Maintain tight temperature control to avoid premature foaming<\/li>\n\n\n\n<li>Use low injection pressure to allow core expansion while the outer skin solidifies.<\/li>\n<\/ul>\n\n\n\n<p><strong>Result:<\/strong> A part with a smooth surface and lightweight interior.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"step-4-foaming-and-expansion\"><strong>Step 4: Foaming and Expansion<\/strong><\/h3>\n\n\n<p>As the pressure drops inside the mold, the blowing agent expands\u2014forming evenly distributed gas bubbles. Control pressure and temperature to ensure uniform cell size and prevent defects like voids or warping.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"step-5-cooling-and-ejection\"><strong>Step 5: Cooling and Ejection<\/strong><\/h3>\n\n\n<p>Cool the part inside the mold using water channels or integrated cooling systems.<\/p>\n\n\n\n<p>Once solid, eject the part. Perform any secondary operations like trimming or painting as needed.<\/p>\n\n\n    <section class=\"article-author-block\">\r\n        <div class=\"article-content-wrapper\">\r\n            <div class=\"author-block\">\r\n                            <\/div>\r\n                <div class=\"quote-block\" style=\"border-color: #0E6AED;\">\r\n                    <p><strong>Pro Tip<\/strong>: Optimize cooling time to balance cycle speed with dimensional stability.<\/p>\n                <\/div>\r\n        <\/div>\r\n    <\/section>\r\n\n\n<h2 class=\"wp-block-heading\" id=\"the-bottomline-why-use-foam-injection-molding\"><strong>The Bottomline: Why Use Foam Injection Molding?<\/strong><\/h2>\n\n\n<p>Engineers can use foam injection molding to reduce part weight, improve insulation, and cut material costs\u2014without sacrificing structural strength. It\u2019s ideal for automotive, packaging, or aerospace designs that prioritize lightness over surface finish.<\/p>\n\n\n\n<p>Ready to take advantage of foam injection molding? Source your <a href=\"https:\/\/xometry.eu\/en\/foam-moulding\/\" target=\"_blank\" rel=\"noreferrer noopener\">custom structural foam moulding projects<\/a> with Xometry. Our expert support at every stage, combined with attentive customer care, guarantees a seamless experience from quoting to order tracking.<\/p>\n","protected":false},"author":50,"featured_media":114892,"comment_status":"open","ping_status":"closed","template":"","categories":[],"c-tag-articles":[],"global-tag":[4652],"class_list":["post-114810","articles","type-articles","status-publish","has-post-thumbnail","hentry","global-tag-foam-molding"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Foam Injection Molding: Lightweight, Strong Parts| Xometry Pro<\/title>\n<meta name=\"description\" content=\"Foam injection molding enables the production of lightweight, durable components by integrating a cellular structure within thermoplastic materials.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Foam Injection Molding: Lightweight, Strong Parts| Xometry Pro\" \/>\n<meta property=\"og:description\" content=\"Foam injection molding enables the production of lightweight, durable components by integrating a cellular structure within thermoplastic materials.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/\" \/>\n<meta property=\"og:site_name\" content=\"Xometry Pro\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-01T15:31:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/foam-tray-with-compartments-scaled.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1792\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"11 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/articles\\\/foam-injection-molding-technology\\\/\",\"url\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/articles\\\/foam-injection-molding-technology\\\/\",\"name\":\"Foam Injection Molding: Lightweight, Strong Parts| Xometry Pro\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/articles\\\/foam-injection-molding-technology\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/articles\\\/foam-injection-molding-technology\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/xometry.pro\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/foam-tray-with-compartments-scaled.jpeg\",\"datePublished\":\"2025-06-26T09:24:03+00:00\",\"dateModified\":\"2025-07-01T15:31:01+00:00\",\"description\":\"Foam injection molding enables the production of lightweight, durable components by integrating a cellular structure within thermoplastic materials.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/articles\\\/foam-injection-molding-technology\\\/#breadcrumb\"},\"inLanguage\":\"en-EU\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/articles\\\/foam-injection-molding-technology\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-EU\",\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/articles\\\/foam-injection-molding-technology\\\/#primaryimage\",\"url\":\"https:\\\/\\\/xometry.pro\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/foam-tray-with-compartments-scaled.jpeg\",\"contentUrl\":\"https:\\\/\\\/xometry.pro\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/foam-tray-with-compartments-scaled.jpeg\",\"width\":2560,\"height\":1792,\"caption\":\"Grey foam tray with compartments\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/articles\\\/foam-injection-molding-technology\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Articles\",\"item\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/articles\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Foam Molding\",\"item\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/global-tag\\\/foam-molding\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Foam Injection Molding: Lightweight, Strong Parts with Less Material\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/#website\",\"url\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/\",\"name\":\"Xometry Pro\",\"description\":\"Knowledge &amp; Community For Engineers &amp; Product Designers\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/xometry.pro\\\/en-eu\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-EU\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Foam Injection Molding: Lightweight, Strong Parts| Xometry Pro","description":"Foam injection molding enables the production of lightweight, durable components by integrating a cellular structure within thermoplastic materials.","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:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/","og_locale":"en_US","og_type":"article","og_title":"Foam Injection Molding: Lightweight, Strong Parts| Xometry Pro","og_description":"Foam injection molding enables the production of lightweight, durable components by integrating a cellular structure within thermoplastic materials.","og_url":"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/","og_site_name":"Xometry Pro","article_modified_time":"2025-07-01T15:31:01+00:00","og_image":[{"width":2560,"height":1792,"url":"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/foam-tray-with-compartments-scaled.jpeg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"11 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/","url":"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/","name":"Foam Injection Molding: Lightweight, Strong Parts| Xometry Pro","isPartOf":{"@id":"https:\/\/xometry.pro\/en-eu\/#website"},"primaryImageOfPage":{"@id":"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/#primaryimage"},"image":{"@id":"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/#primaryimage"},"thumbnailUrl":"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/foam-tray-with-compartments-scaled.jpeg","datePublished":"2025-06-26T09:24:03+00:00","dateModified":"2025-07-01T15:31:01+00:00","description":"Foam injection molding enables the production of lightweight, durable components by integrating a cellular structure within thermoplastic materials.","breadcrumb":{"@id":"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/#breadcrumb"},"inLanguage":"en-EU","potentialAction":[{"@type":"ReadAction","target":["https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/"]}]},{"@type":"ImageObject","inLanguage":"en-EU","@id":"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/#primaryimage","url":"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/foam-tray-with-compartments-scaled.jpeg","contentUrl":"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/foam-tray-with-compartments-scaled.jpeg","width":2560,"height":1792,"caption":"Grey foam tray with compartments"},{"@type":"BreadcrumbList","@id":"https:\/\/xometry.pro\/en-eu\/articles\/foam-injection-molding-technology\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/xometry.pro\/en-eu\/"},{"@type":"ListItem","position":2,"name":"Articles","item":"https:\/\/xometry.pro\/en-eu\/articles\/"},{"@type":"ListItem","position":3,"name":"Foam Molding","item":"https:\/\/xometry.pro\/en-eu\/global-tag\/foam-molding\/"},{"@type":"ListItem","position":4,"name":"Foam Injection Molding: Lightweight, Strong Parts with Less Material"}]},{"@type":"WebSite","@id":"https:\/\/xometry.pro\/en-eu\/#website","url":"https:\/\/xometry.pro\/en-eu\/","name":"Xometry Pro","description":"Knowledge &amp; Community For Engineers &amp; Product Designers","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/xometry.pro\/en-eu\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-EU"}]}},"_links":{"self":[{"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/articles\/114810","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/articles"}],"about":[{"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/types\/articles"}],"author":[{"embeddable":true,"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/comments?post=114810"}],"version-history":[{"count":0,"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/articles\/114810\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/media\/114892"}],"wp:attachment":[{"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/media?parent=114810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/categories?post=114810"},{"taxonomy":"c-tag-articles","embeddable":true,"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/c-tag-articles?post=114810"},{"taxonomy":"global-tag","embeddable":true,"href":"https:\/\/xometry.pro\/en-eu\/wp-json\/wp\/v2\/global-tag?post=114810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}