Patent ID: 7919738

Claim:
A multilayer freezable, microwaveable film for packaging a frozen, microwaveable food product comprising: (a) a polyolefin film comprising: (i) a heat sealable layer formed from at least one polypropylene/alpha-olefin copolymer, the polypropylene/alpha-olefin copolymer having a melt flow rate of about 0.5 g/10 min. to about 45 g/10 min; (ii) a core layer adjacent to the heat sealable layer, the core layer being formed from a polymeric material having a melting point of at least 71° C.; and (iii) an outer skin layer formed from at least one polyethylene polymer resin, the at least one polyethylene polymer resin having a melt flow index of about 0.50 g/10 min. to about 20 g/10 min; and (b) an outer protective layer laminated to the outer skin layer, the outer protective layer being formed from a polymer material that is temperature resistant at a microwave oven temperature of about 105° C.; wherein the film does not fracture when exposed to a temperature of about −20° C. and does not melt or burst when exposed to a temperature of about 105° C., and wherein the film can be formed into a package for the frozen, microwaveable food product that permits the frozen food product to be heated in a microwave oven.