Title:
POLYPROPYLENE FILM, METAL MEMBRANE LAYERED FILM, AND FILM CAPACITOR, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2016/182003
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a polypropylene film exhibiting high dielectric breakdown voltage even in a high-temperature environment, whereby voltage resistance and reliability can be realized in a capacitor even in a high-temperature environment; a metal membrane layered film and a film capacitor using the polypropylene film; and a method for manufacturing the same. In order to achieve this purpose, the present invention is configured as described below. A polypropylene film in which the degree of crystal orientation in the α crystal (110) plane measured by wide-angle X-ray diffraction is 0.78 or greater, and the sum of the heat shrinkages in the width direction and the longitudinal direction after 10 minutes of heat treatment at 120°C is 4.0% or less. A polypropylene film in which the unevenness of thickness in the longitudinal direction is 0.1-6.0%, and the sum of the maximum point strength in the longitudinal direction and the maximum point strength in the width direction is 400 MPa or greater.
Inventors:
IMANISHI YASUYUKI (JP)
OHKURA MASATOSHI (JP)
OKADA KAZUMA (JP)
KUMA TAKUYA (JP)
OHKURA MASATOSHI (JP)
OKADA KAZUMA (JP)
KUMA TAKUYA (JP)
Application Number:
PCT/JP2016/064059
Publication Date:
November 17, 2016
Filing Date:
May 11, 2016
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08J5/18; B29C55/14; B32B15/085; B32B27/32; C08J7/00; H01G4/18; B29K23/00
Domestic Patent References:
| WO2015012324A1 | 2015-01-29 | |||
| WO2016043172A1 | 2016-03-24 | |||
| WO2016043217A1 | 2016-03-24 |
Foreign References:
| JP2009301036A | 2009-12-24 | |||
| JPS52139176A | 1977-11-19 | |||
| JP2004323542A | 2004-11-18 |
Other References:
See also references of EP 3296348A4
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