Patent ID: 9149955
Filing Date: 2015-10-06
Classification: B29B,B29C,B29D,B29K,B29L,B32B,C08K,C08L,Y02P,Y02W,Y10T

Abstract:
1. A method for recycling a coated thermoplastic film coated with 0.1 wt %-20 wt % polymers or waxes that are immiscible in the molten thermoplastic comprising: densifying a ground coated thermoplastic film using a blade centrifuge, wherein a bulk density of the ground coated thermoplastic film is less than 1 lb/ft feeding the densified coated thermoplastic film into a multi-screw secondary extruder with vacuum to form a molten polymer; filtering the molten polymer to produce a recycled resin; and producing a biaxially oriented thermoplastic film from the recycled resin, wherein the film does not contain surface or embedded optical defects larger than 100 microns.