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Title:
POLYPROPYLENE FILM, METAL LAYER-INTEGRATED POLYPROPYLENE FILM, AND FILM CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2019/026958
Kind Code:
A1
Abstract:
A polypropylene film which has a crystallite size of not more than 12.2 nm, said crystallite size being determined using the Scherrer equation from the half value width of a reflection peak in the α crystal (040) plane that is measured by the wide-angle X-ray diffractometry, and a volume resistivity of not lower than 6×101 4 Ω·cm, said volume resistivity being calculated in accordance with equation I from a current value that is measured 1 minute after applying a voltage at a potential gradient of 200 V/μm in an environment at 100°C. Equation I: volume resistivity = [(effective electrode area) × (applied voltage)] / [(polypropylene film thickness) × (current value)].

Inventors:
SUEYOSHI,Michiko (7-5 Ginza 4-chome, Chuo-k, Tokyo 61, 〒1040061, JP)
KAKEHI,Akihiro (7-5 Ginza 4-chome, Chuo-k, Tokyo 61, 〒1040061, JP)
TOMINAGA,Takeshi (7-5 Ginza 4-chome, Chuo-k, Tokyo 61, 〒1040061, JP)
OKUYAMA,Yoshimune (7-5 Ginza 4-chome, Chuo-k, Tokyo 61, 〒1040061, JP)
Application Number:
JP2018/028853
Publication Date:
February 07, 2019
Filing Date:
August 01, 2018
Export Citation:
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Assignee:
OJI HOLDINGS CORPORATION (7-5 Ginza 4-chome, Chuo-ku Tokyo, 61, 〒1040061, JP)
International Classes:
C08J5/18; B32B15/085; H01G4/32
Domestic Patent References:
WO2016051496A12016-04-07
WO2016182003A12016-11-17
Foreign References:
JP2014231584A2014-12-11
JPH01166955A1989-06-30
JP2012133074A2012-07-12
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (First Shin-Osaka MT Bldg. 2nd Floor, 5-13-9 Nishinakajima Yodogawa-ku, Osaka-sh, Osaka 11, 〒5320011, JP)
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