New heat-shrinkable multi-layer thermoplastic film and...

Details New heat-shrinkable multi-layer thermoplastic film and... New heat-shrinkable multi-layer thermoplastic film and...

B - Operations, Transporting

32

B

B32B 27/08 (2006.01) B32B 27/32 (2006.01) B32B 27/34 (2006.01) B65B 53/02 (2006.01) B65D 30/14 (2006.01)

Patent

CA 2358278

The invention refers to a thermoplastic, multi-layer, heat-shrinkable film having a sealing layer comprising a blend of a propylene co-polymer or ter-polymer with from about ~ to about 40 % by weight of an EPDM elastomer. The film also comprises a core gas- barrier layer, preferably comprising EVOH, and an outer abuse layer, typically comprising a polyolefin or a polyamide. The film is converted into containers, such as bags or pouches, by sealing it to itself and employed for cook-in and pasteurization applications. With the new films it is possible to better control the decay with aging of the seal strength of the factory seals of these containers.

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