--- title: Why Injection Molders Should Rely on Purge description: Purging Expert shares ways Purging Compounds can change the lives of injection molders. image: https://www.asaclean.com/hubfs/20170413_134825.jpg --- [ Order Online ](https://asaclean.my.site.com/b2bstore) [ Free Sample ](https://offers.asaclean.com/free-sample) ## [ Asaclean Blog ](https://www.asaclean.com/blog) Browse by Topic " aerospace asaclean asaclean news Asaclean® benefits asahi kasei automotive Best Practices black specks blisters blow molding blown-film extrusion buyers caps and closures carbon contamination cast-film extrusion Chemical Purging Compounds clear applications Color Changeovers Company News compounding consumer products contamination Cost savings custom molders Customer Success Story decreasing scrap defects electronics Energy Efficiency EX Grade extruder cleaning Extrusion fillament glass filled Glitter Grade Selection HDPE High and Low Temp Changeovers hold a bubble Hot Runners Injection Molding Injection Molding Tips LDPE Lightweight automotive components LLDPE low residue maintenance Material Changeovers Mechanical Purging Compounds medical Melt Flow Index NPE 24 nylons on the fly packaging PCR PEEK Polypropylene Post Consumer Resins preventative preventative purging processing tips profile extrusion Purge Program purge programs Purge Training Purge Trial purging purging compounds purging concentrates purging procedures Purging Tips quality recycled resins residue issues scrap reduction Screw Pulls sheet extrusion shutdown and sealing start-up super engineering resins Sustainability Tech Day technical support training trials Troubleshooting Twin Screw twin screw extrusion two step purging U Grade ULTEM venting Viscosity webinars wire extrusion - 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[Twin Screw](https://www.asaclean.com/blog/topic/twin-screw) - [twin screw extrusion](https://www.asaclean.com/blog/topic/twin-screw-extrusion) - [two step purging](https://www.asaclean.com/blog/topic/two-step-purging) - [U Grade](https://www.asaclean.com/blog/topic/u-grade) - [ULTEM](https://www.asaclean.com/blog/topic/ultem) - [venting](https://www.asaclean.com/blog/topic/venting) - [Viscosity](https://www.asaclean.com/blog/topic/viscosity) - [webinars](https://www.asaclean.com/blog/topic/webinars) - [wire extrusion](https://www.asaclean.com/blog/topic/wire-extrusion) [ Subscribe ](https://www.asaclean.com/blog/why-injection-molders-should-rely-on-purge#subscribe-modal) ### Suscribirse Injection Molding / 2 min read / September 15, 2020 # Why Injection Molders Should Rely on Purge - [Facebook Share ](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.asaclean.com%2Fblog%2Fwhy-injection-molders-should-rely-on-purge) - [Twitter Tweet ](https://twitter.com/intent/tweet?url=https%3A%2F%2Fwww.asaclean.com%2Fblog%2Fwhy-injection-molders-should-rely-on-purge&text=Why+Injection+Molders+Should+Rely+on+Purge) - [LinkedIn Share ](https://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fwww.asaclean.com%2Fblog%2Fwhy-injection-molders-should-rely-on-purge&title=Why%20Injection%20Molders%20Should%20Rely%20on%20Purge&summary=Purging+Expert+shares+ways+Purging+Compounds+can+change+the+lives+of+injection+molders.&source=) - [Pinterest Pin ](https://pinterest.com/pin/create/button/?url=https%3A%2F%2Fwww.asaclean.com%2Fblog%2Fwhy-injection-molders-should-rely-on-purge) - [Email Email ](mailto:?subject=Why%20Injection%20Molders%20Should%20Rely%20on%20Purge&body=https%3A%2F%2Fwww.asaclean.com%2Fblog%2Fwhy-injection-molders-should-rely-on-purge) ![Why Injection Molders Should Rely on Purge](https://www.asaclean.com/hs-fs/hubfs/20170413_134825.jpg?width=640&height=500&name=20170413_134825.jpg) ![20170413_134825](https://www.asaclean.com/hs-fs/hubfs/20170413_134825.jpg?width=366&name=20170413_134825.jpg) The best technique to keep your injection molding machines screws and hot runner systems clean is by using a commercial purging compound. Commercial purging compounds are formulated with cleaning in mind. The most optimal time to use a commercial purging compound is during a color/ material change, machines starting up, or shut down. In injection molding you want to make sure the screw speed and back pressure are at the maximum safe setting when purging. This will ensure the purging compound will have enough pressure and shear power to clean out the barrel and/or hot runner tips. You will want to continue using the purging compound until you cannot see anymore color or contaminants coming from the barrel or hot runner tips. Companies that want to get the most out of their injection molding machines, should use a commercial purging compound. Purging compounds take change-overs that need hours to complete and can compress it to 30 minutes or less. They are manufactured to cleanse injection molding machines of contaminants and be able to start the next job in a more considerate time frame. Next time you have a change over that is abolishing your scrap rate, please contact your technical service rep and they will be able to help with any needs.  If you have any questions on how to implement a Purge Program for super-engineering resins, [request your free consultation today](https://offers.asaclean.com/free-consultation) and learn how to supercharge your profits. **Ready to reduce your ****production downtime**** to protect your profits? Learn more about how ****purging compounds**** and process efficiency work in tandem.** ![Tom Hanvey](https://www.asaclean.com/hs-fs/hubfs/Tom%20Headshot.jpg?width=150&name=Tom%20Headshot.jpg) #### [ Tom Hanvey ](https://www.asaclean.com/blog/author/tom-hanvey) Tom Hanvey is the Associate Director of Marketing & Sustainability at Asahi Kasei 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 processors looking for an edge on their competition. - [Share On LinkedIn ](https://www.linkedin.com/in/thomashanvey/) ## Related Posts [![Learn everything about purging compounds so you can start saving today.](https://www.asaclean.com/hs-fs/hubfs/Purging%20Compounds%20101.png?width=450&height=250&name=Purging%20Compounds%20101.png) What Is a Purging Compound? A Beginner’s Guide for Plastics Processors Injection... / 8 min read / June 23, 2026 ](https://www.asaclean.com/blog/what-is-a-purging-compound-a-beginners-guide-for-plastics-processors) [![3​ Essential Tips For Improving Key Variables In Your Purging Process](https://www.asaclean.com/hs-fs/hubfs/AI-Generated%20Media/Images/This%20image%20depicts%20someone%20making%20checkmarks%20on%20a%20checklist-4.jpeg?width=450&height=250&name=This%20image%20depicts%20someone%20making%20checkmarks%20on%20a%20checklist-4.jpeg) 3​ Essential Tips For Improving Key Variables In Your Purging Process Troubleshooting / 3 min read / December 06, 2016 ](https://www.asaclean.com/blog/3-essential-tips-for-improving-key-variables-in-your-purging-process) ## Comments Get Started ## Ready to start improving your efficiency and increasing your profitability? - [Request a Consultation](https://www.asaclean.com/blog/why-injection-molders-should-rely-on-purge#) - [Contact Sales](https://www.asaclean.com/blog/why-injection-molders-should-rely-on-purge#) ![](https://www.asaclean.com/hubfs/assets/images/icons/icon-layers.svg) #### Free Sample Request a free sample of Asaclean® Purging Compounds for your plant and start saving today. 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[See your savings](https://www.asaclean.com/cost-savings-calculator) [ Back to Top ](https://www.asaclean.com/blog/why-injection-molders-should-rely-on-purge#top) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Tom Hanvey", "url" : "https://www.asaclean.com/blog/author/tom-hanvey" }, "dateModified" : "2020-09-15T12:45:00.326Z", "datePublished" : "2020-09-15T12:45:00.000Z", "headline" : "Why Injection Molders Should Rely on Purge", "image" : [ "https://www.asaclean.com/hubfs/20170413_134825.jpg" ], "mainEntityOfPage" : { "@id" : "https://www.asaclean.com/blog/why-injection-molders-should-rely-on-purge", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://www.asaclean.com/hubfs/Asaclean%20Logo%20TM.jpg" }, "name" : "Asahi Kasei Plastics North America" } } ``` ```json { "@context" : "http://schema.org", "@type" : "Article", "articleBody" : "The best technique to keep your injection molding machines screws and hot runner systems clean is by using a commercial purging compound. Commercial purging compounds are formulated with cleaning in mind. The most optimal time to use a commercial purging compound is during a color/ material change, machines starting up, or shut down. In injection molding you want to make sure the screw speed and back pressure are at the maximum safe setting when purging. This will ensure the purging compound will have enough pressure and shear power to clean out the barrel and/or hot runner tips. You will want to continue using the purging compound until you cannot see anymore color or contaminants coming from the barrel or hot runner tips.", "author" : { "@type" : "Person", "name" : "Tom Hanvey" }, "datePublished" : "September 15, 2020", "headline" : "Why Injection Molders Should Rely on Purge", "image" : "https://f.hubspotusercontent20.net/hubfs/468726/20170413_134825.jpg", "name" : "Why Injection Molders Should Rely on Purge", "url" : "https://www.asaclean.com/blog/why-injection-molders-should-rely-on-purge" } ```