Abstract: A lidding material and a container using such material, where the lidding material includes a sealant layer, a biaxially-oriented film, and a thin metallic foil layer having a thickness not greater than about 0.0005-0.0007 inches, where the thin metallic foil layer is adhered to one side of the biaxially-oriented film, and the sealant layer is applied to an opposite side of the biaxially-oriented film.

Abstract: Film is used as a bladder that expands in response to an increase in the internal pressure while contents are heated, such as micro-waved. A laser-scored vent(s) is provided with scoring of an reduced extensibility layer, such that expansion of the package due to internal pressure (steam) pulls the film across the width of the package causing it to stretch to the point that the vent point(s) breaks through or ruptures the sealant film allowing the pressure/steam to escape.

Abstract: A storage bag for perishable articles includes an unperforated outer layer, an unperforated inner layer, and an intermediate layer disposed between the outer and inner layers. The intermediate layers includes a solventless adhesive mixed with a volatile antimicrobial. In addition, the outer and inner layers are oxygen permeable, and the inner layer has a greater permeability than the outer layer.

Abstract: Disclosed is a multilayer, gas-permeable structure. The structure includes a polymeric outer film and a polymeric inner film. The two films are permanently adhered to one another in face-to-face orientation. One of the two films, either the outer film or the inner film, but not both, includes a plurality of perforations passing through it. The perforations in the perforated film define a void volume and the void volume large enough so that the gas-permeability of the perforated film has a zero or an insignificant contribution to the gas permeability of the structure as a whole. The structures are useful for packaging fresh-cut produce and other foods.