Title:
BIAXIALLY ORIENTED POLYESTER FILM ROLL AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2022191347
Kind Code:
A
Abstract:
To provide a biaxially oriented polyester film which has uniformized physical properties in a film width direction that is suitable for processing applications, and is environmental-friendly by using a polyester resin of PET bottle recycling, and a method for manufacturing the same.SOLUTION: A biaxially oriented polyester film is formed of a polyester resin composition containing a recycled polyester resin and particles, and satisfies all the following requirements (1) to (4). (1) Temperature-raising crystallization temperature of 120°C or higher and 139°C or lower. (2) Change amount of an orientation angle in a film width direction of 0° or more and 10° or less per 0.5 m. (3) Thermal shrinkage when heat-treated at 150°C for 30 minutes in the full width of a film of 0.5% or more and 2.0% or less in a longitudinal direction, and -1.0% or more and 1.0% or less in the width direction. (4) Percentage content of an isophthalic acid component with respect to 100 mol% of the total dicarboxylic acid component in the polyester resin composition of 0.01 mol% or more and 3.0 mol% or less.SELECTED DRAWING: None
Inventors:
MANABE NOBUYUKI
GOTO TAKAMICHI
HARUTA MASAYUKI
GOTO TAKAMICHI
HARUTA MASAYUKI
Application Number:
JP2022161748A
Publication Date:
December 27, 2022
Filing Date:
October 06, 2022
Export Citation:
Assignee:
TOYO BOSEKI
International Classes:
C08J5/18; B29C55/12; B29C55/14
Domestic Patent References:
| JP2018203818A | 2018-12-27 | |||
| JP2014065282A | 2014-04-17 |
Foreign References:
| WO2020203106A1 | 2020-10-08 | |||
| WO2020166353A1 | 2020-08-20 |
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