Patent ID: 6869686

Claim:
A multilayer packaging film formable into a pouch by heat sealing for use in food preparation consisting essentially of: (1) an inner sealing layer comprising at least 50% by weight of a copolymer of propene, and at least one α-olefin selected from the group consisting of ethylene, butene-1, methylpentene-1, hexene-1, octene-1, decene-1 and mixtures thereof, said copolymer having a propene content of at least 60 wt. %, a Tm between about 100° C. and about 145° C., a: Mw/Mn of between 1 and 5, and n-hexane extractables of less than 5 wt. %; (2) a second layer in contact with the inner sealing layer comprising: (a) at least 10 wt. % of a first copolymer of ethylene and at least one C 4 -C 8 α-olefin, said copolymer having a density of from 0.900 to 0.915 g/cm 3 and a melt index of less than 2 dg/min., (b) at least 10 wt. % of a second copolymer of ethylene with from 4 to 18 wt. % of a vinyl ester, alkyl acrylate, acrylic or methacrylic acid, and (c) from 0 to 60 wt. % of a third copolymer of ethylene and at least one C 3 -C 8 α-olefin having a density less than 0.900 g/cm 3 and a melting point of between 65-98° C.; and (3) an optional third layer comprising a protective outer layer.