Abstract: Compositions and packaging films are provided having a multilayer oxygen barrier comprising an EVOH copolymer layer in contact with at least one polyamide layer. The EVOH copolymer compositions preferably comprise about 44 mol %, or less, of ethylene. Multilayer packaging films can optionally include an exterior layer comprising heat resistant materials such as polyester or polyamide. The multilayer oxygen barriers described herein can provide high shrink films with desirably high oxygen barrier properties. The oxygen barriers can be used in making heat-shrinkable films and food packages having desirable high levels of free shrink.

Abstract: Heat-shrinkable multilayer packaging articles resistant to curling are provided, for example, for bone-in meat products. Preferred packaging articles comprise a heat-shrinkable packaging assembly having an exterior film affixed to one exterior side of a heat-shrinkable food storage bag, where the total free shrink value of the exterior film is greater than the total free shrink value of the film forming the heat-shrinkable food storage bag. Other packaging articles include a laminate bag for bone-in meat products having two puncture-resistant heat shrinkable laminates affixed to opposite sides of a heat-shrinkable multilayer tubular film bag, where one laminate has a higher total free shrink value than the bag or the laminate on the opposite side of the film bag. The laminate bag can further comprise an oxygen barrier layer and a heat sealing region. Methods of making curl-resistant heat-shrinkable packaging articles are also provided.