{"id":29280,"date":"2026-04-17T16:48:24","date_gmt":"2026-04-17T14:48:24","guid":{"rendered":"https:\/\/www.knauf-industries.com\/blog\/what-you-need-to-know-about-chemical-recycling-of-plastics\/"},"modified":"2026-06-18T08:15:56","modified_gmt":"2026-06-18T06:15:56","slug":"what-you-need-to-know-about-chemical-recycling-of-plastics","status":"publish","type":"post","link":"https:\/\/www.knauf-industries.com\/en\/blog\/what-you-need-to-know-about-chemical-recycling-of-plastics\/","title":{"rendered":"What you need to know about chemical recycling of plastics"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"29280\" class=\"elementor elementor-29280 elementor-29264\">\n\t\t\t\t<div class=\"elementor-element elementor-element-13e33485 e-flex e-con-boxed e-con e-parent\" data-id=\"13e33485\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ee7d2a2 elementor-widget elementor-widget-text-editor\" data-id=\"ee7d2a2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ol><li><span style=\"text-decoration: underline;\"><a href=\"#partie1\"><strong>This article in brief<\/strong><\/a><\/span><\/li><li><span style=\"text-decoration: underline;\"><a href=\"#partie2\"><strong>What is chemical recycling of plastics?<br \/><\/strong><\/a><\/span><\/li><li><span style=\"text-decoration: underline;\"><a href=\"#partie3\"><strong>What types of plastics are involved?<br \/><\/strong><\/a><\/span><\/li><li><span style=\"text-decoration: underline;\"><a href=\"#partie4\"><strong>How does the chemical recycling of plastics work?<br \/><\/strong><\/a><\/span><\/li><li><span style=\"text-decoration: underline;\"><a href=\"#partie5\"><strong>The advantages of this method<br \/><\/strong><\/a><\/span><\/li><li><span style=\"text-decoration: underline;\"><a href=\"#partie6\"><strong>The differences between chemical and mechanical recycling<\/strong><\/a><\/span><span style=\"text-decoration: underline;\"><br \/><\/span><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-db378d8 elementor-widget elementor-widget-text-editor\" data-id=\"db378d8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Faced with an ever-increasing volume of plastic waste and the limitations of certain traditional recycling processes, new recovery solutions are emerging. And in industrial sectors faced with complex flows that are difficult to process mechanically, <strong>we can now rely on chemical recycling. <\/strong>  <\/p><p>Complementary to <a href=\"https:\/\/www.knauf-industries.com\/en\/blog\/all-you-need-to-know-about-mechanical-plastics-recycling\/\">mechanical recycling<\/a>, this method aims to <strong>transform plastic waste into a raw material of equivalent quality to the original<\/strong>. But what does this process actually involve? What are its advantages, limitations and practical applications? Knauf Industries reveals all about chemical plastic recycling in this article.   <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25f4ca1 elementor-widget elementor-widget-menu-anchor\" data-id=\"25f4ca1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"partie1\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ebab8c elementor-widget elementor-widget-text-editor\" data-id=\"6ebab8c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><strong>This article in brief<\/strong><\/h2><ul><li>Chemical recycling enables in particular contaminated plastics or or hard-to-recycle plastics to recycle mechanically to be processed.<\/li><li>It is based on the breakdown of polymers into basic molecular building blocks.<\/li><li>This technology paves the way for the production of recycled plastics of almost the same quality as virgin ones, which can be used in sensitive applications such as the food industry.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a41cfec elementor-widget elementor-widget-menu-anchor\" data-id=\"a41cfec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"partie2\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ee47019 elementor-widget elementor-widget-text-editor\" data-id=\"ee47019\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><strong>What is chemical recycling of plastics?<\/strong><\/h2><p>Chemical recycling is a <strong>material recovery process<\/strong> that <strong>breaks down plastic polymers into their basic chemical constituents<\/strong>. Unlike mechanical recycling, which relies on a physical transformation of the material (grinding, melting), chemical recycling relies on various thermal or chemical processes, such as solvolysis, pyrolysis or gasification.<\/p><p>These processes <strong>convert plastics into basic molecules<\/strong> (monomers) or <strong>intermediates <\/strong>such as naphtha. These products can then be used to manufacture new plastics, transformed into fuels and chemical intermediates, or integrated into existing petrochemical processes.<\/p><p>For manufacturers, this process is of strategic interest: <strong>it increases the overall recovery of plastics<\/strong>, by expanding the pool of available recycled materials. In addition to processing certain complex waste streams (contaminated plastics, multi-layer materials, blends), chemical recycling also helps improve the quality of already recyclable resins such as polypropylene (PP), in order to meet higher performance requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e5f9197 elementor-widget elementor-widget-menu-anchor\" data-id=\"e5f9197\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"partie3\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8cce61a elementor-widget elementor-widget-text-editor\" data-id=\"8cce61a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>What types of plastics are involved?<\/h2><p>In addition to processing certain complex waste streams (contaminated plastics, multi-layer materials, blends), chemical recycling also helps improve the quality of already recyclable resins such as polypropylene (PP), in order to meet higher performance requirements.<\/p><p>This includes :<\/p><ul><li>Plastics used in <strong>demanding technical and industrial applications<\/strong><\/li><li>Resins requiring <strong>properties equivalent to those of virgin material<\/strong><\/li><li><strong>Certain complex or specific flows<\/strong>, in addition to existing mechanical processes<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f8bc8ed elementor-widget elementor-widget-menu-anchor\" data-id=\"f8bc8ed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"partie4\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e5af51 elementor-widget elementor-widget-text-editor\" data-id=\"3e5af51\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>How does the chemical recycling of plastics work?<\/h2><p>Chemical recycling encompasses several technologies, but all are based on a common principle: <strong>the molecular transformation of matter<\/strong>. To achieve this, manufacturers follow a three-stage process:<\/p><h3>1) Preparing waste<\/h3><p>In addition to processing certain complex waste streams (contaminated plastics, multi-layer materials, blends), chemical recycling also helps improve the quality of already recyclable resins such as polypropylene (PP), in order to meet higher performance requirements.<\/p><h3>2) Polymer decomposition<\/h3><p>Several processes are available:<\/p><ul><li><strong>Pyrolysis<\/strong>: heating in the absence of oxygen to produce liquid or gaseous hydrocarbons<\/li><li><strong>Gasification<\/strong>: conversion into synthesis gas<\/li><li><strong>Depolymerization<\/strong>: return to the original monomers via chemical reactions<\/li><\/ul><p><span style=\"font-weight: 400;\">Each technology is adapted to specific types of plastics and recovery objectives.<\/span><\/p><h3><strong>3) Reintegration of raw materials into the production chain<\/strong><\/h3><p><span style=\"font-weight: 400;\">Finally, these materials are reintroduced into production lines as <\/span><b>secondary raw materials<\/b><span style=\"font-weight: 400;\"> for the manufacture of new plastic products. This process makes it possible to recreate products or packaging with properties equivalent to those of virgin resins.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a4e85a elementor-widget elementor-widget-cta_banner_widget\" data-id=\"7a4e85a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"cta_banner_widget.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t        <div class=\"cta-banner cta-banner--w-media\" style=\"--background-color: #0099DE;\">\n            <div class=\"cta-banner__inner-container\">\n                <div class=\"cta-banner__content-container\">\n                                            <h2 class=\"cta-banner__content-title\">Innovative plastic solutions<\/h2>\n                                                                <div class=\"cta-banner__content-text\"><p>Discover the keys to developing innovative plastics solutions<\/p><\/div>\n                                    <\/div>\n                <div class=\"buttons-container\">                        <a href=\"https:\/\/info.knauf-industries.com\/download\/livre-blanc_innovation_plastique\" class=\"button button--primary\" target=\"_self\" rel=\"\">Download the white paper<\/a>                <\/div>            <\/div>\n                                            <div class=\"cta-banner__image-container\">\n                    <img fetchpriority=\"high\" decoding=\"async\" width=\"620\" height=\"440\" class=\"cta-banner__image\" src=\"https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-scaled.webp\" srcset=\"https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-150x150.webp 150w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-300x200.webp 300w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-768x512.webp 768w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-1024x683.webp 1024w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-1536x1024.webp 1536w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-2048x1365.webp 2048w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-75x20.webp 75w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-150x40.webp 150w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-300x80.webp 300w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-300x300.webp 300w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-600x400.webp 600w, https:\/\/www.knauf-industries.com\/wp-content\/uploads\/2025\/08\/Komebac-plots-100x100.webp 100w, \" alt=\"\" \/>\n                <\/div>\n                    <\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ced03f elementor-widget elementor-widget-menu-anchor\" data-id=\"2ced03f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"partie5\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-15ae6a9 elementor-widget elementor-widget-text-editor\" data-id=\"15ae6a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>The advantages of this method<\/h2><p><span style=\"font-weight: 400;\">Chemical recycling of plastics offers several major industrial and environmental advantages, the first of which is its ability to recover complex waste streams.. Indeed, as highlighted earlier in this article, one of the major benefits of this method is its ability to process waste that could not previously be recycled mechanically.<\/span><\/p><p><span style=\"font-weight: 400;\">it should also be noted that,by breaking down into basic molecules, chemical recycling enables the <\/span><b>production of materials with properties close to those of virgin materials<\/b><span style=\"font-weight: 400;\">, thus avoiding the degradation associated with other recycling methods<\/span><\/p><p><span style=\"font-weight: 400;\">Finally, chemical recycling is a <\/span><b>\u00a0key driver of the circular economy<\/b><span style=\"font-weight: 400;\">. By allowing plastic waste to be reintroduced into production cycles, it helps to reduce dependence on fossil resources and diversify recovery solutions.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9fff4d3 elementor-widget elementor-widget-menu-anchor\" data-id=\"9fff4d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"partie6\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f63fa8 elementor-widget elementor-widget-text-editor\" data-id=\"3f63fa8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>The differences between chemical and mechanical recycling<\/h2><p><span style=\"font-weight: 400;\">Chemical recycling of plastics offers several major industrial and environmental advantages, the first of which is its ability to recover complex waste streams.. Indeed, as highlighted earlier in this article, one of the major benefits of this method is its ability to process waste that could not previously be recycled mechanically.<\/span><\/p><p><span style=\"font-weight: 400;\">it should also be noted that,by breaking down into basic molecules, chemical recycling enables the <\/span><b>production of materials with properties close to those of virgin materials<\/b><span style=\"font-weight: 400;\">, thus avoiding the degradation associated with other recycling methods<\/span><\/p><p><span style=\"font-weight: 400;\">Finally, chemical recycling is a <\/span><b>\u00a0key driver of the circular economy<\/b><span style=\"font-weight: 400;\">. By allowing plastic waste to be reintroduced into production cycles, it helps to reduce dependence on fossil resources and diversify recovery solutions.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Knauf Industries explains everything you need to know about chemical plastic recycling in this article: the principle, recycled plastics and benefits.<\/p>\n","protected":false},"author":16,"featured_media":6882,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[367,363],"tags":[],"class_list":["post-29280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-carbon-footprint-reduction","category-preservation"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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