Patent ID: 6306490
Filing Date: 2001-10-23
Classification: B32B,Y10S,Y10T

Abstract:
A biaxially oriented co-extruded polymeric film which consists of a plurality of co-extruded layers, an optional adhesive layer applied to one surface of said co-extruded biaxially oriented film and optional printing on an exposed surface of said film; said co-extruded layers including a core layer of a voided propylene homopolymer which has a density of not more than 0.70 g/cm.sup.3, at least one substantially nonvoided layer of polyolefin co-extruded onto a first side of said core layer, and at least one substantially non-voided layer of polyolefin co-extruded onto a second side of said core layer; with the proviso that the ratio of the combined thickness of the non-voided layers on the respective surfaces of the core layer is from 2:1 to 1:1.