Multiple layer films containing oriented layers of nylon and eth

Details Multiple layer films containing oriented layers of nylon and eth Multiple layer films containing oriented layers of nylon and eth

1984-11-28

1987-02-03

Kittle, John E.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

4284758, 4284761, 428910, 428349, 428354, B65D 3002, B32B 2708

Patent

active

046408525

ABSTRACT:
A multiple layer sheet structure has oriented layers of nylon and EVOH. Additional layers may or may not be utilized, and may or may not be oriented. Where additional layers are used, one of the additional layers, on the exterior surface of the structure, is preferably heat sealable. The structure shows improved impact resistance, after retort processing, over similar structures not having oriented nylon and EVOH layers. In certain embodiments, retort processed pouches made from the packaging structures have improved stress crack resistance when dropped onto a hard surface.

REFERENCES:
patent: 4095012 (1978-06-01), Schirmer
patent: 4241130 (1980-12-01), Barnes
patent: 4405667 (1983-09-01), Christensen et al.
patent: 4461808 (1984-07-01), Mollison
patent: 4501798 (1985-02-01), Koschak et al.
patent: 4552801 (1985-11-01), Odorzynski et al.

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