Laminated polyester film

Stock material or miscellaneous articles – Surface property or characteristic of web – sheet or block

Patent

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Details

428480, 428482, 428910, B32B 2736, B32B 710, B32B 3120, B32B 3126

Patent

active

040412067

ABSTRACT:
Laminated polyester film having a base layer of biaxially oriented polyethylene terephthalate or polybutylene terephthalate is laminated directly by heat sealing and without the use of any intervening adhesive with a crystalline butylene terephthalate or hexylene terephthalate copolyester blended with from about 10 to 40 weight % of a polyethylene terephthalate or polybutylene terephthalate, said copolyester containing about from 50 to about 80 mole % of terephthalic acid units based on the total acid component of the copolyester.

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