Long runs and clear materials make purging film and sheet equipment especially difficult. Resin and carbon build up on the screw and along the die edges, causing unwanted streaks and black specks, even after purging with traditional purging agents. Backed by a modern R&D lab, Purgex™ grades are created, developed and relentlessly tested to tackle the problems film and sheet processors face.
All of Purgex’s ingredients in each purging compound grade are Generally Recognized As Safe (GRAS) by the U.S. FDA. This eliminates safety concerns for your customers or employees on the plant floor. Purgex is also safe for your machines and Hot Runner System as well. Purgex is strictly tested to ensure it can safely pass through any gate .030″ (.75mm) or larger and still provide the industry-leading performance you need.
Clear parts are some of the most painstaking items to produce. Black specks, color streaks, and materials molded long ago can unexpectedly appear in clear parts. These unwanted contaminants can add hours to an otherwise simple changeover. To add another layer of complexity in producing quality clear parts, an after-purge haze can occur when purging with some resins or purging compounds. With this range of problems in mind, we have developed a specific grade of Purgex to resolve these challenging issues.
Purgex Purging Compounds not only clean your extrusion, injection, or blow molding machine, but importantly, are easily removed without leaving residue behind. Purgex’s research and development team keep focus on our simple rule of thumb: “easy in, easy out”. Our goal is to make the time between runs as short as possible, and that includes ensuring that no Purgex left in your machine. With such high standards for product purity in the medical industry, the only thing you have to worry about Purgex leaving behind is a spotless machine ready for production.
Want to know more about which purging compounds are best for film and sheet?
For Purgex grades recommended for purging Film and Sheet , refer to our Products page.
Want to see purging compounds in action?
Check out our Purgex purging compounds being used for a blown film application.