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Title:
POLYPROPYLENE FILM, METAL MEMBRANE LAYERED FILM, FILM CAPACITOR, AND METHODS FOR MANUFACTURING THESE
Document Type and Number:
WIPO Patent Application WO/2018/181271
Kind Code:
A1
Abstract:
A polypropylene film having a film thickness of at least 0.5 μm and less than 10 μm, wherein: JIS-Rz of at least one direction, measured by cross-sectional analysis in three-dimensional non-contact surface shape measurement (VertSCAN), is 40-450 nm; Ra is 5-30 nm; and Rt is 50-500 nm. The present invention provides: a polypropylene film exhibiting high dielectric breakdown voltage even in high-temperature environments, whereby voltage resistance and reliability can be realized in a capacitor even in high-temperature environments; a metal membrane layered film and a film capacitor; and methods for manufacturing these.

Inventors:
IMANISHI, Yasuyuki (Toray Industries Inc., 1-1, Sonoyama 1-chome, Otsu-sh, Shiga 58, 〒5208558, JP)
OHKURA, Masatoshi (Toray Industries Inc., 1-1, Sonoyama 1-chome, Otsu-sh, Shiga 58, 〒5208558, JP)
OKADA, Kazuma (Toray Industries Inc., 1-1, Sonoyama 1-chome, Otsu-sh, Shiga 58, 〒5208558, JP)
NAKANISHI, Yuta (Toray Industries Inc., 1-1, Sonoyama 1-chome, Otsu-sh, Shiga 58, 〒5208558, JP)
Application Number:
JP2018/012346
Publication Date:
October 04, 2018
Filing Date:
March 27, 2018
Export Citation:
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Assignee:
TORAY INDUSTRIES, INC. (1-1 Nihonbashi-Muromachi 2-chome, Chuo-ku Tokyo, 66, 〒1038666, JP)
International Classes:
C08J5/18; B29C55/14; B32B15/085; H01G4/18; H01G4/32
Domestic Patent References:
WO2014142264A12014-09-18
WO2013146367A12013-10-03
WO2016051496A12016-04-07
WO2012002123A12012-01-05
WO2015129851A12015-09-03
WO2017022786A12017-02-09
Foreign References:
JP2011122143A2011-06-23
JP2017035884A2017-02-16
JP2016135891A2016-07-28
JP2015201616A2015-11-12
JP2014231584A2014-12-11
JP2014114419A2014-06-26
Other References:
MOTONOBU KAWAI: "Nikkei Electronics", 17 September 2012, NIKKEI BUSINESS PUBLICATIONS, article "Firumu Kondensa Yakushin; Kuruma Kara Enerugi E (Remarkable Progress of Film Capacitors; from Automobiles to Energy", pages: 57 - 62
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