https://www.avient.com/news/avient-launches-non-pfas-process-aid-extrusion-applications-npe-2024
Traditionally, process aids for extrusion often contain fluoropolymers which may be classifiable as per- and polyfluorinated substances (PFAS), a group of chemicals widely used in various products to impart properties such as resistance to heat, oil, stain, and water.