Patent ID: 7276269

Claim:
A multilayer coextruded frangible film for cook-in applications comprising; (a) a first layer, a second layer, and a third layer; (b) wherein said first layer comprises a material selected from the group consisting of ethylene/α-olefin copolymer, propylene/ethylene copolymer and blends thereof; (c) wherein said second layer comprises a first modified or unmodified polyolefin and a second modified or unmodified polyolefin which is immiscible in said first modified or unmodified polyolefin; wherein said second layer is disposed between said first layer and said third layer; (d) wherein said third layer comprises a material selected from the group consisting of polyethylene, anhydride-modifled polyolefin, ethylene/vinyl alcohol copolymer, polyamide and blends thereof; and (e) wherein said second layer is adapted to peel from said first layer or said third layer under a force of between 1000-2500 g/in. (393.7-984.3 g/cm) as measured in accordance with the Standard Heat Seal Strength Test.