The FEP film is the double-layered and transparent foil installed in the rack attached to the resin tank. It creates a clean way for the UV light to cure liquid resin during the whole printing process.Teflon™ FEP film is a transparent, thermoplastic film that can be heat sealed, thermoformed, vacuum formed, heat bonded, welded, metalized, laminated-combined with dozens of other materials, and can also be used as an excellent hot-melt adhesive.

This wide variety of fabrication possibilities combines with important properties to offer a unique balance of capabilities not available in any other plastic film.