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

1990-06-14

1992-10-13

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156243, 15624411, 15624424, 156320, 156324, B29C 4704

Patent

active

051547899

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: 4217161 (1980-08-01), Yamada
patent: 4451599 (1984-05-01), Odorzynski
patent: 4501798 (1985-02-01), Koschak

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