Patent ID: 6494390
Filing Date: 2002-12-17
Classification: B29B,Y02W

Abstract:
A method of preparing polymeric material comprising the steps of:(a) providing a mixture of chemically distinct polymeric materials in the solid state, said mixture consisting essentially of film waste and containing at least three chemically distinct polymeric materials and cellulosic material intimately bonded to at least a portion of said polymeric materials, and wherein low density polyethylene (LDPE) is present as the major component of said mixture; (b) effecting a chemical change to said mixture by application of mechanical energy through solid state shear pulverization in the presence of cooling to maintain the polymeric materials in the mixture in the solid state during said change and thereby compatibilizing the mixture to form homogenous material upon effecting said chemical change; and (c) discharging the resulting compatibilized polymeric material.