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.
JP3863366 | METAL LAMINATE |
WO/2020/159085 | POLYAMIDE RESIN FILM, AND RESIN LAMINATE USING SAME |
JP2007334140 | OPTICAL RETARDATION FILM |
HIGASHIURA MASAYA
KOTANI TORU
FUJITA SHINJI