... -layer/Double-layer/Multi-layer 2.High quality 3.Auto film thickness control 4.Processing Polymers:PP/PE/PVC, etc. ... used in plasticizing, extruding and forming plastic plate, sheet, film, profile, pipe, pelletizing, etc.The extruder fits for thermoplastic ... are mainly used to produce cast film (stretch film, wrapping film), and fresh-keeping film. The production of the film has viscosity on one side ...