--- title: Japanese OEM Saves Using Thermylene™ for Window Regulator Housings description: Thermylene™ PP-GF40% cuts weight, eliminates drying, and improves tolerance control in window regulator housings—without changing your tool. image: https://blog.akplastics.com/hubfs/Window%20Housing%20Blog.jpg --- # Japanese OEM Saves Using Thermylene™ for Window Regulator Housings ![Tom Hanvey](https://blog.akplastics.com/hs-fs/hubfs/1570135534076.jpg?width=40&height=40&name=1570135534076.jpg) [ Tom Hanvey ](https://blog.akplastics.com/author/tom-hanvey) March 04, 2026 ![Thermylene™ PP-GF40% cuts weight, eliminates drying, and improves tolerance control in window regulator housings—without changing your tool.](https://blog.akplastics.com/hubfs/Window%20Housing%20Blog.jpg)   #### **Introduction** Window regulator housings demand tight tolerances, smooth operation and resistance to warpage—even in thin-wall sections. Traditional PBT-GF15 grades require lengthy drying and still risk dimensional drift. Thermylene™ PP-GF40% delivered a Japanese OEM weight reduction, cost down, ease of molding and zero pre-drying—all in one glass-filled polypropylene compound. #### **Eliminate Drying, Simplify Processing** PBT-GF15 needs hours of moisture-controlled drying before each production run. Thermylene PP-GF40% requires no drying. Molders remove hopper-dryer cycles, slash energy use and start molding immediately. Process engineers see stable melt-flow and reliable cavity fill in complex geometries—no more warpage or sink marks. #### **Weight Reduction and Cost Down** Switching to Thermylene PP-GF40% cuts part mass and raw-material spend without changing your existing tool. Purchasing meets cost-down mandates while design teams maintain structural rigidity in thin walls, ribs and snap-fits. The result: lighter housings, lower cycle costs and fewer secondary operations. #### **Precision Fit in Complex Geometries** Thermylene PP-GF40% flows uniformly into guide channels, mounting bosses and snap-fit features. Its low shrinkage ensures parts drop from the mold within tolerance—eliminating manual rework and assembly rejects. Tooling engineers gain confidence in multi-cavity balance and consistent part quality. **Durability and Environmental Resistance** Housings molded in Thermylene PP-GF40% retain mechanical integrity from –40 °C cabin chill to 125 °C heat soak. The glass-filled formulation resists hydrolysis and withstands humidity and salt-spray exposure without dimensional drift. That reliability reduces field failures and warranty claims. #### **Sustainability and Energy Savings** By replacing PBT-GF15 with Thermylene PP-GF40%, plants eliminate energy-intensive drying steps and cut resin consumption. The halogen-free polypropylene base supports straightforward recycling. Sustainability teams meet both energy-reduction and circularity KPIs with a single material change. #### **Next Steps** Stop drying delays and warpage in your regulator-housing production. Contact our technical-sales team today to: Ready to improve the performance of your parts in automotive applications?   [**Contact us today** to learn more about how our engineered plastics can power your next project](https://blog.akplastics.com/contact-materials-expert). ## Help Us. Help You Superior Performance. White Glove Service. Unrivaled Support. Learn Why Switching to Asahi Kasei Plastics North America's materials is Stress-Free. [ Talk to a Materials Expert ](https://blog.akplastics.com/contact-materials-expert) [ Technical Documents ](https://www.asahi-kasei-plastics.com/en/products/gradesearch/) ![Why Purging Page Header Pic-1](https://blog.akplastics.com/hubfs/Why%20Purging%20Page%20Header%20Pic-1.jpg) **Share:** [![Share on facebook](https://7528309.fs1.hubspotusercontent-na1.net/hub/7528309/hubfs/raw_assets/public/mV0_d-web-default-modules_hubspot/img/facebook-color.png?width=24&name=facebook-color.png) ](https://www.facebook.com/share.php?u=https%3A%2F%2Fblog.akplastics.com%2Fjapanese-oem-saves-using-thermylene-for-window-regulator-housings%3Futm_medium%3Dsocial%26utm_source%3Dfacebook) [![Share on linkedin](https://7528302.fs1.hubspotusercontent-na1.net/hub/7528302/hubfs/raw_assets/public/mV0_d-web-default-modules_hubspot/img/linkedin-color.png?width=24&name=linkedin-color.png) ](https://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fblog.akplastics.com%2Fjapanese-oem-saves-using-thermylene-for-window-regulator-housings%3Futm_medium%3Dsocial%26utm_source%3Dlinkedin) [![Share on twitter](https://7528304.fs1.hubspotusercontent-na1.net/hub/7528304/hubfs/raw_assets/public/mV0_d-web-default-modules_hubspot/img/twitter-color.png?width=24&name=twitter-color.png) ](https://twitter.com/intent/tweet?original_referer=https%3A%2F%2Fblog.akplastics.com%2Fjapanese-oem-saves-using-thermylene-for-window-regulator-housings%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&url=https%3A%2F%2Fblog.akplastics.com%2Fjapanese-oem-saves-using-thermylene-for-window-regulator-housings%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&source=tweetbutton&text=) ## Tom Hanvey \ Tom Hanvey is the Associate Director of Marketing & Sustainability at Plastics North America. Before joining APNA, he worked as the Senior Marketing Manager for Asaclean Purging Compounds. He's worked in the plastics industry for over 10 years and focuses on recyclable resins and on the inbound marketing side, providing easy-to-digest content to Tiers and OEMs looking for an edge on their competition. [tom.hanvey@akplastics.com](mailto:tom.hanvey@akplastics.com)   [Follow us on Facebook ](https://www.asaclean.com/en/apna-plastics-blog-insights-and-solutions-for-manufacturers/www.asaclean.com) [Follow us on LinkedIn ](https://www.linkedin.com/in/thomashanvey/?original_referer=https%3A%2F%2Fwww.asaclean.com%2Fen%2Fapna-plastics-blog-insights-and-solutions-for-manufacturers%2Fthe-vanguard-in-stress-whitening-prevention-for-high-end-furniture) [automotive](https://blog.akplastics.com/tag/automotive), [Thermylene](https://blog.akplastics.com/tag/thermylene), [Asahi Kasei Plastics](https://blog.akplastics.com/tag/asahi-kasei-plastics) ## Comments \ ## Related Posts \ [![Flame-retardant engineering plastic components used in automotive, electrical, and industrial applications comparing halogenated and non-halogenated material systems.](https://blog.akplastics.com/hubfs/Halogenated%20Blog.png) ](https://blog.akplastics.com/halogenated-vs.-non-halogenated-flame-retardants-understanding-the-tradeoffs) ### [Halogenated vs. Non-Halogenated Flame Retardants: Understanding the Tradeoffs](https://blog.akplastics.com/halogenated-vs.-non-halogenated-flame-retardants-understanding-the-tradeoffs) July 01, 2026 [![Solar junction box mounted on a photovoltaic panel using durable XYRON™ resin for weather resistance and electrical safety.](https://blog.akplastics.com/hubfs/Solar%20Blog%201.png) ](https://blog.akplastics.com/how-xyron-resins-enhance-solar-junction-box-efficiency-durability) ### [How XYRON™ Resins Enhance Solar Junction Box Efficiency & Durability](https://blog.akplastics.com/how-xyron-resins-enhance-solar-junction-box-efficiency-durability) June 24, 2026 [![Off-road vehicle driving over rugged terrain with lightweight structural components made from high-performance polyamide.](https://blog.akplastics.com/hubfs/Power%20Sports%20Blog%201.png) ](https://blog.akplastics.com/leona-sg-off-road-vehicle-metal-replacement) ### [Built for the Trail: How LEONA™ SG Supports Metal Replacement in Off-Road Vehicles](https://blog.akplastics.com/leona-sg-off-road-vehicle-metal-replacement) June 17, 2026 ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Tom Hanvey", "url" : "https://blog.akplastics.com/author/tom-hanvey" }, "dateModified" : "2026-03-04T14:45:01.182Z", "datePublished" : "2026-03-04T14:45:01.000Z", "headline" : "Japanese OEM Saves Using Thermylene™ for Window Regulator Housings", "image" : [ "https://blog.akplastics.com/hubfs/Window%20Housing%20Blog.jpg" ], "mainEntityOfPage" : { "@id" : "https://blog.akplastics.com/japanese-oem-saves-using-thermylene-for-window-regulator-housings", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://blog.akplastics.com/hubfs/Asaclean%20Logo%20TM.jpg" }, "name" : "Asahi Kasei Plastics North America" } } ```