Polyester film for fabrication

Details Polyester film for fabrication Polyester film for fabrication

1992-04-27

1993-08-31

Michl, Paul R.

Stock material or miscellaneous articles

Composite

Of metal

428 358, 428480, 524425, 524493, 524497, 524604, 524605, B29D 2200, B32B 1508, C08J 300, C08K 326

Patent

active

052407799

ABSTRACT:
A biaxially oriented polyester film comprising a copolyester which contains a lubricant having an average particle diameter of no greater than 2.5 .mu.m and has a melting point of from 210.degree. to 245.degree. C., the film having a plane orientation coefficient of from 0.10 to 0.16, a thermal shrinkage at 150.degree. C. of no higher than 10%, and a density of lower than 1.385 g/cm.sup.3, and optionally a refractive index in a direction of thickness of from 1.495 to 1.530 as well as a film plane refractive index of from 1.61 to 1.66 in all directions.

REFERENCES:
patent: 4115617 (1978-09-01), Mitsuishi et al.
patent: 4818581 (1989-04-01), Katoh et al.
patent: 5059460 (1991-10-01), Heyes et al.
Database WPIL, accession No. 89-266608 [37], Derwent Publications Ltd, London, GB; & JP-A-1 192 546 (Nippon Steel) *Whole abstract*.
Database WPIL, accession No. 89-266607 [37], Derwent Publications Ltd, London, GB; & JP-A-1 192 545 (Nippon Steel) *Whole abstract*.

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