Title:
LAMINATED POLYESTER FILM
Document Type and Number:
WIPO Patent Application WO/2015/019885
Kind Code:
A1
Abstract:
The present invention provides a polyester film for electrically insulating a motor, the polyester film having exceptional moist-heat resistance and heat resistance, being capable of withstanding a long period of use under high temperature and constant humidity, and having exceptional processability. A laminated polyester film comprising at least two layers, in which (1), on at least one surface, each of R1 (=r1/r) and R2 (= r2/r) obtained from a spectral intensity r1 of 1452cm-1, a spectral intensity r2 of 1332cm-1, and a spectral intensity r of 1602 cm-1 observed in measurement by Fourier transform infrared spectroscopy (FT-IR) assumes a value satisfying a specific range of numeric values; (2) on a surface satisfying (1), R3 (= r3/r) obtained from a spectral intensity r3 of 1018 cm-1 and a spectral intensity r of 1602 cm-1 observed in measurement by FT-IR assumes a value satisfying a specific range of numeric values; and (3) the melting point of a resin constituting a layer having a surface satisfying (1) and (2) is a temperature satisfying a specific range of numeric values.
Inventors:
SUZUKI TADAMASA (JP)
HORIE MASATO (JP)
KAWAHARA SHINYA (JP)
HIGASHIOJI TAKUJI (JP)
HORIE MASATO (JP)
KAWAHARA SHINYA (JP)
HIGASHIOJI TAKUJI (JP)
Application Number:
PCT/JP2014/069817
Publication Date:
February 12, 2015
Filing Date:
July 28, 2014
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B32B27/36; B32B7/027; C08J5/18; H01B3/42; H01B17/60; H02K3/30
Domestic Patent References:
| WO2010140611A1 | 2010-12-09 |
Foreign References:
| JP2011208008A | 2011-10-20 | |||
| JP2002205360A | 2002-07-23 | |||
| JPH08106815A | 1996-04-23 | |||
| JP2002273844A | 2002-09-25 | |||
| JPH11314337A | 1999-11-16 | |||
| JP2003113259A | 2003-04-18 | |||
| JP2010018789A | 2010-01-28 |
Download PDF: