Abstract: Various embodiments of multilayer polymer films and multilayer structures with enhanced tear strength are provided. Also disclosed are processes and systems for producing the disclosed multilayer polymer films. The disclosed films comprise a first polymer that may be cross-linkable upon exposure to radiation, and a second polymer that is cleaved or broken when exposed to irradiation. Layers comprising the first polymer are referred to as bulk layers, and layers comprising the second polymer are referred to as scission layers. Scission layers are positioned between bulk layers. The bulk and scission layers may comprise one or more sublayers.

Abstract: Heat shrinkable multilayer packaging films comprising at least one core of a blend of at least 50% by weight of an ethylene unsaturated-ester copolymer and a material selected from the group consisting of ionomers, ethylene/acid copolymers and terpolymers, or blends, and two outer-film layers comprising a polyolefin. The invention includes films and packaging articles.