Extrusion-coatable polyester film comprising...

Details Extrusion-coatable polyester film comprising... Extrusion-coatable polyester film comprising...

2006-11-28

2006-11-28

Chen, Vivian (Department: 1773)

Stock material or miscellaneous articles

Composite

Of silicon containing

C428S343000, C428S3550RA, C428S446000, C428S474400, C428S475200, C428S475500, C428S480000, C428S483000, C428S910000, C525S418000, C525S420000, C525S425000, C264S288400, C264S289300, C264S289600, C264S290200

Reexamination Certificate

active

07141307

ABSTRACT:
Polyester films which comprise not only thermoplastic polyester, e.g. polyethylene terephthalate, but also from 5 to 45% by weight of poly(m-xyleneadipamide) and optionally from 0.02 to 1% by weight of fillers, and which have, on at least one surface, an adhesion-promoting layer comprised of a hydrolyzed amino-functional silane. The films of the invention are produced by a sequential stretching process, and feature improved mechanical properties, such as a modulus of elasticity greater than 3500 N/mm2in both orientation directions, high gloss, low haze, and very good barrier properties with respect to oxygen transmission. Films of the invention are therefore a suitable packaging material for foods and other consumable items, and as starting material for production of laminates via extrusion coating.

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