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Patent Searching and Data


Title:
POLYESTER FILM
Document Type and Number:
Japanese Patent JP2005068360
Kind Code:
A
Abstract:

To provide a polyester film having excellent mechanical characteristics, capable of being laminated with a metal sheet and having an excellent designability without whitening by thermal treatment even at near or above a melting point.

The polyester film is composed of a polyester composition prepared by compounding 10-90 wt.% of (A) a polyester mainly constituted of ethylene terephthalate, with 90-10 wt.% of (B) a crystalline polyester other than the polyester resin (A), wherein the ratio w/h of a half-value width w(°C) of a temperature-descending recrystallization peak (Tc2) to calorie h (mW), measured with a differential scanning calorimeter (DSC), is ≤1.30 (°C/mW). The crystalline polyester (B) is a polyester preferably selected from a PBT polyester, PEN polyester, PTT polyester, PHT polyester or PPT polyester.


Inventors:
ITO KATSUYA
HIGASHIURA MASAYA
KOTANI TORU
FUJITA SHINJI
Application Number:
JP2003303239A
Publication Date:
March 17, 2005
Filing Date:
August 27, 2003
Export Citation:
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Assignee:
TOYO BOSEKI
International Classes:
C08J5/18; C08L67/02; (IPC1-7): C08J5/18; C08L67/02