Patent ID: 7537829

Claim:
A multi-layer film, comprising: (a) a core layer having a first side and a second side, said core layer comprising a core polymer and at least one soft polymer; (b) a first tie layer having a first side and a second side, the second side of the first tie layer on the first side of said core layer, said first tie layer comprising a soft polymer and, optionally, a tie layer polymer, the optional tie layer polymer comprising at least one of a C 2 -C 8 alpha-olefin homo-, co-, or terpolymer, a metallocene catalyzed homo-, co-, or terpolymer comprising propylene, and blends thereof; and (c) a sealant layer on the first side of the first tie layer, wherein the soft polymer of at least one of the first tie layer and the core layer comprises a polymer having a flexural modulus of less than or equal to about 80 Kpsi and a Vicat softening point of less than or equal to about 221° F. (105° C.), wherein a seal formed by a crimp sealer of 200 gram/in weight, 20 psi pressure and 0.75 sec dwell time of said sealant layer to itself has a minimum seal temperature of less than or equal to about 180° F. (82.2° C.).