{"id":7756,"date":"2025-06-03T14:44:35","date_gmt":"2025-06-03T12:44:35","guid":{"rendered":"https:\/\/ikv-aachen.de\/rp\/sfb-trr-402-pultrusion-of-semi-finished-products-with-graded-properties-using-recyclates-from-plastic-waste-streams\/"},"modified":"2025-06-04T15:08:56","modified_gmt":"2025-06-04T13:08:56","slug":"sfb-trr-402-pultrusion-of-semi-finished-products-with-graded-properties-using-recyclates-from-plastic-waste-streams","status":"publish","type":"cpt_ikv_rp","link":"https:\/\/ikv-aachen.de\/en\/rp\/sfb-trr-402-pultrusion-of-semi-finished-products-with-graded-properties-using-recyclates-from-plastic-waste-streams\/","title":{"rendered":"SFB\/TRR 402: Pultrusion of semi-finished products with graded properties using recyclates from plastic waste streams"},"content":{"rendered":"<style type=\"text\/css\">\n    #single-header-block_532fd7433425a31c74603aa8bec1adac .swiperThumbsNavi .swiper-slide {\n        opacity: 0.4;\n    }\n\n    #single-header-block_532fd7433425a31c74603aa8bec1adac .swiperThumbsNavi .swiper-slide-thumb-active {\n        opacity: 1;\n    }\n<\/style>\n    <section id=\"single-header-block_532fd7433425a31c74603aa8bec1adac\" class=\"block-single-header theGridWrapper \">\n        <div class=\"theGrid12\">\n            <div class=\" col-start-2 col-span-10 md:col-start-3  md:col-span-8\">\n                <h2 class=\"font-serif font-semibold text-blue text-sm w-4\/5\">\n                    Teilprojekt B05                <\/h2>\n                                    <div class=\"mt-base text-blue text-sm font border-l-8  border-blue pl-base my-12 leading-normal \">\n                        Sub-project B05 aims to understand the process, modelling and control of a multi-step process chain consisting of waste processing, compounding and pultrusion to produce graded semi-finished products, which are to be further processed. They consist of thermoplastic resins and fibre reinforcements based on short, long and continuous glass- and carbon fibres. Three types of semi-finished products are investigated: spoolable tapes a few tenths of a millimetre thick, stiffer profiles as well as strands with up to several millimetre thickness.                    <\/div>\n                                            <\/div>\n        <\/div>\n    <\/section>\n\n\n\n<p class=\"wp-block-paragraph\">The graded semi-finished products are processed in further projects in tape laying (A02, B01) and tape braiding processes (B03) and used as graded local reinforcement in the injection molding and compression molding processes for manufacturing the demonstrators (A03, A04). In the production of the surface structure demonstrators, the graded strands serve as plasticisable inserts for extrusion (A04). B05 thus supplies materials, process and material models as well as the necessary data for the iEP.<\/p>\n\n\n<figure class=\" relative flex flex-col gap-2xs mb-xs md:mb-l xl:mb-xl\"><img decoding=\"async\"  class=\" w-full  \"  src=\"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/06\/SFB-TRR-402-B05.jpg\" srcset=\"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/06\/SFB-TRR-402-B05-748x499.jpg 748w, https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/06\/SFB-TRR-402-B05-1536x1024.jpg 1536w, https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/06\/SFB-TRR-402-B05-768x512.jpg 768w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" width=\"1536\" height=\"1024\" alt=\"SFB TRR 402 - B05\" loading=\"lazy\" \/><span class=\" text-copyright order-3 justify-end text-right w-full  w-full \">&copy; IKV<\/span><figcaption class=\" w-full  text-figcaption justify-end text-right \">The process line including all methods used to produce graded tapes from virgin and\nrecycled materials. It starts with a mechanical waste processing chain to produce recyclates\nwith sensor-based material flow characterisa-tion of the input (SBMC) and sensor-based\nquality control (SBQC) of the recyclates and continues with the compounding of the recy-\nclates and the following production<\/figcaption><\/figure>\n\n\n<p class=\"wp-block-paragraph\">The processes investigated in B05 include the mechanical processing of plastic waste (post-industrial and post-consumer), the production of compounds and a combined pultrusion\/extrusion process. Thanks to various additive options (e.g. to promote adhesion) and reinforcement with short fibers during extrusion, as well as the embedding of continuous fiber-reinforced layers with glass and\/or carbon fibers, they offer many degrees of freedom in the creation of graded morphologies. To investigate the processing of recycled materials, a range of waste streams are evaluated, analyzed and mechanically processed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The prepared recyclates are processed into pellets in twin-screw extruders together with virgin thermoplastics, glass\/carbon fibers and masterbatches with coated fibers from sub-project B03. The granulates are made available for further sub-projects for the production of molded parts and used in the extrusion\/pultrusion process for the impregnation of continuous fibers. By mixing different melt streams, gradations can be adjusted in a targeted manner. At IKV, a modular test setup is being realised that enables the defined and repeatable production of graded semi-finished products and provides in-situ measurement options for process analysis. The long-term aim is to provide data, methods and models that automatically configure production resources, process sequences and material flows on the basis of a target configuration specified by the iEP.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sub-project B03 is concerned with process understanding, modeling and control of a multi-stage process chain consisting of recyclate processing, compounding and pultrusion for the production of graded semi-finished products. The semi-finished products consist of a thermoplastic matrix with various short, long and continuous fiber reinforcements based on glass or carbon fibers. Three types of semi-finished products are being investigated: coilable tapes with a thickness of a few tenths of a millimeter, stiffer profiles and strands up to several millimeters thick.<\/p>\n","protected":false},"featured_media":7743,"parent":0,"template":"","tags":[1003,1161,1160,873,1158,1159],"research_fields":[840,856,809,813,810],"class_list":["post-7756","cpt_ikv_rp","type-cpt_ikv_rp","status-publish","has-post-thumbnail","hentry","tag-compoundierung","tag-grading","tag-impact-extrusion","tag-pultrusion-en","tag-recyclate-en","tag-tapes-en","research_fields-circular-economy","research_fields-extrusion-en","research_fields-fiber-reinforced-plastics","research_fields-injection-moulding","research_fields-lightweight-technologies"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SFB\/TRR 402: Pultrusion of semi-finished products with graded properties using recyclates from plastic waste streams | IKV-Aachen<\/title>\n<meta name=\"description\" content=\"Sub-project B03 is concerned with process understanding, modeling and control of a multi-stage process chain consisting of recyclate processing, compounding and pultrusion for the production of graded semi-finished products.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ikv-aachen.de\/en\/rp\/sfb-trr-402-pultrusion-of-semi-finished-products-with-graded-properties-using-recyclates-from-plastic-waste-streams\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SFB\/TRR 402: Pultrusion of semi-finished products with graded properties using recyclates from plastic waste streams | IKV-Aachen\" \/>\n<meta property=\"og:description\" content=\"Sub-project B03 is concerned with process understanding, modeling 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