Patent ID: 7078463
Filing Date: 2006-07-18
Classification: B32B,Y10T

Abstract:
1. A biaxially oriented polyolefin multilayer film comprising: (a) a core layer comprising (i) greater than about 0% by weight to about 50% by weight of an isotactic polypropylene-containing impact copolymer comprising a rubber-containing phase in a range of 10–30 weight percent based on the weight of the isotactic polypropylene-containing impact copolymer, (ii) about 10% by weight to 70% by weight of an alpha olefin/polypropylene copolymer-containing thermoplastic olefin comprising a rubber-containing phase in a range of 10–30 weight percent based on the weight of the alpha olefin/polypropylene copolymer-containing thermoplastic olefin and (iii) about 10% by weight to 70% by weight of an isotactic propylene polymer; and (b) at least one polyolefin skin layer adjacent to the core layer.