Biaxially oriented laminated polyester film for use as film to b

Details Biaxially oriented laminated polyester film for use as film to b Biaxially oriented laminated polyester film for use as film to b

1995-05-30

1997-04-08

Davis, Jenna

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428480, 428355EN, C09J 702

Patent

active

056186215

ABSTRACT:
A biaxially oriented laminated polyester film comprising (A) a first layer formed from a first copolyester which is composed of ethylene terephthalate unit as a main recurring unit, and (B) a second layer formed from a polyester composition containing (B1) a second copolyester which is composed of ethylene terephthalate unit as a main recurring unit and (B2) a third (co)polyester which is composed of butylene terephthalate unit as a main recurring unit and is contained in an amount of 1 to 40% by weight or (B3) a filler having an average particle diameter of 2.5 .mu.m or less and is contained in an amount of 5 to 80% by weight in place of the third (co)polyester (B3), the second layer being to constitute a surface to be bonded onto a metal surface when the laminated film is laminated on the metal sheet. This composition can give metal cans, e.g., beverage cans and food cans, excellent in heat resistance, resistance to embrittlement under retort treatment, favor retention, impact resistance and anticorrosive properties.

REFERENCES:
patent: 3635900 (1972-01-01), Price et al.
patent: 4041206 (1977-09-01), Tsunashima et al.
patent: 4362775 (1982-12-01), Yabe
patent: 5240779 (1993-08-01), Ono
Patent Abstracts of Japan vol. 17, No. 617 (C-1129) 15 Nov. 1993 & JP-A-05 186 612 (Teijin Ltd.) 27 Jul. 1993.
Database WPI Week 8228, Derwent Publications Ltd., London, GB; AN 82-58143E & JP-A-57 089 955 (Toray Ind., Inc.) 4 Jun. 1982.

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