Layered film compositions, packages prepared therefrom, and methods of use

A perforated film composition, comprising at least three layers, and wherein at least one layer is an inner layer with a lower softening and/or melting temperature, as compared with the respective softening and/or melting temperatures of at least two outer layers, located at opposite surfaces of the inner layer, and

• wherein, when the film composition is exposed to an elevated temperature, the at least one inner layer softens or melts to such an extent, that upon exposure to a compression force, a sufficient number of perforations are sealed in the inner layer, to impart an increased moisture barrier to the film composition, and
• wherein, the layers of the film composition have perforations with a common center, and
• wherein each of the outer layers is independently a film comprising at least one thermoplastic polymer, or independently a foamed thermoplastic polymer resin, and
• wherein the inner layer is a film comprising at least one thermoplastic polymer, or a foamed thermoplastic polymer resin.