Importance

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Abstract

Multi-layer polymeric films and methods of forming the same are provided. The film includes a combination of layers forming the core of the film, and a polymeric skin layer forming each of the outer surfaces of the multi-layer film. The combination of layers forming the core of the film includes: a polypropylene-rich “A” layer, in which polypropylene is the major component of the “A” layer; and a polyethylene-rich “B” layer, in which polyethylene is the major component of the “B” layer. In some cases, the “B” layer may have high density polyethylene as its major component. In the core, there is at least one “A” layer and at least one “B” layer, and the “B” layer is joined at least indirectly to the “A” layer. The “A” layer(s) and the “B” layer(s) combine to make up 20% to 60% of the thickness of the multi-layer polymeric film.

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First Claim