Patent ID: 6096014
Filing Date: 2000-08-01
Classification: A61L,B32B,C08J,C08L

Abstract:
A stretch-oriented thermoplastic film comprising:a filled resin including at least one copolymer of ethylene with at least one C.sub.4 -C.sub.8 .alpha.-olefin monomer wherein said resin comprises super-octene resins or metallocene-catalyzed ethylene-based copolymers and from about 40 to about 65% by weight of said filled resin material further comprising calcium carbonate and filler that contributes to pore formation;wherein said film has a water vapor transmission rate of from about 300 to about 4,500 g/m.sup.2 -24 hours;wherein said film has a critical break elongation 90.degree. to the direction of orientation of greater than about 100%.