Oriented polymeric film

Details Oriented polymeric film Oriented polymeric film

1985-02-14

1986-10-07

Kittle, John E.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

4284755, 4284758, 4284761, B65D 8500, C08G 4104

Patent

active

046159223

ABSTRACT:
Molecularly oriented plastic films have five molecularly oriented layers. A first layer provides a barrier to gaseous transmission through the film and has a composition of 0% to 50% nylon or nylon copolymer, and conversely 50% to 100% ethylene vinyl alcohol. Second and third adhesive layers are adhered to the surfaces of the first layer, and have compositions comprising olefinic polymers, or copolymers, or blends thereof, the compositions having carboxyl modifications therein. Fourth and fifth layers are adhered to the second and third layers on the respective surfaces opposite the first layer. The fourth and fifth layers comprise 40% to 100% ethylene vinyl acetate and 0% to 60% linear low density polyethylene. Also disclosed are processes for making the oriented five layer films.

REFERENCES:
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patent: 4347332 (1982-08-01), Odorzynski et al.
patent: 4425410 (1984-01-01), Farrell et al.
patent: 4427825 (1984-01-01), Degrassi et al.
patent: 4456646 (1984-06-01), Nishimoto et al.
patent: 4457960 (1984-07-01), Newsome
patent: 4468427 (1984-08-01), Degrassi et al.
patent: 4501798 (1985-02-01), Koschak et al.

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