Boil resistant film laminate and retortable food pouch therefrom

Details Boil resistant film laminate and retortable food pouch therefrom Boil resistant film laminate and retortable food pouch therefrom

1981-12-28

1983-06-21

Ives, P.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

428214, 428215, 428516, 428517, 428520, 229 53, B65D 8900, B32B 2740, B32B 2732

Patent

active

043894372

ABSTRACT:
A flexible film laminate and retortable pouch therefrom comprising a first layer of heat-sealable polyolefin film; a first adhesive layer contacting said polyolefin film, said first adhesive being a maleic acid anhydride adduct of an ethylene-propylene copolymer; a second adhesive layer contacting said first adhesive layer, said second adhesive being a combination of a styrene-butadiene block copolymer and a random terpolymer, said second adhesive also contacting; a second layer of a polyacrylonitrile homopolymer film; said laminate having been subjected to ultra violet radiation through said second layer to an extent resulting in a greater bond strength between layers than in the absence of said radiation.

REFERENCES:
patent: 3453173 (1969-07-01), Isley et al.
patent: 4123576 (1978-10-01), Kobayashi et al.
patent: 4230761 (1980-10-01), Watts

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