Laminate

Details Laminate Laminate

1988-11-21

1989-11-28

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428366, 428 367, 428212, 428412, 4284752, 4284763, 428483, 428515, 428518, 428520, 428522, 525 57, B32B 2708, C08L 2904

Patent

active

048836966

ABSTRACT:
A laminate comprising a layer of a composition (A) of 100 parts by weight of a hydrolyzed ethylene-vinyl acetate copolymer having an ethylene content of 20 to 55% by mole and a degree of hydrolysis of at least 90% by mole and 1 to 100 parts by weight of a thermoplastic polyester having a glass transition temperature of -50.degree. to 25.degree. C. and a heat of fusion of not more than 30 joules/g, the acid component of the polyester being a mixture of 20 to 70% by mole of an aromatic dicarboxylic acid and 80 to 30% by mole of an aliphatic dicarboxylic acid, and the glycol component of the polyester being an alkylene glycol having 2 to 6 carbon atoms; and a layer of a composition (B) of at least one polymer selected from the group consisting of a polyolefin, a polystyrene, a polyvinyl chloride, a polyamide, a polycarbonate and a polyester having a glass transition temperature of not less than 30.degree. C. The laminate of the invention has improved flex crack resistance, drawability and heat moldability as well as excellent gas impermeability.

REFERENCES:
patent: 3857754 (1974-12-01), Hirata et al.
patent: 4500677 (1985-02-01), Maruhashi et al.
patent: 4645645 (1987-02-01), Negi et al.

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