Patent ID: 6713137
Filing Date: 2004-03-30
Classification: B32B,Y10T

Abstract:
A flexible polyolefin multilayered film for the preparation of medical containers by self sealing, the film having a thickness of at least 150 &mgr;m and consisting of an outer layer, a middle layer, and a sealant layer each of the layers consisting essentially only of one or more polypropylene based polymers selected from the group consisting of polypropylene homopolymers, polypropylene-polyethylene copolymers having randomly distributed ethylene units, and mixtures of said homopolymers and said copolymers, wherein said middle layer comprises a polypropylene-polyethylene copolymer with a higher amount of ethylene units than said outer layer, and wherein said sealant layer has a lower melting point than said outer layer.