Title:
BIAXIALLY STRETCHED MICROPOROUS FILM
Document Type and Number:
WIPO Patent Application WO/2014/054726
Kind Code:
A1
Abstract:
A biaxially stretched microporous film characterized by being constituted of a strip polyethylene material which has a film width of 300 mm or more and, with respect to material-property distribution in the film-width direction, having a thickness unevenness set at a value less than 1.00 µm and an air-permeability unevenness set at 50 sec/100 mL or less. Thus, provided is a microporous polyethylene film that is excellent in terms of material-property evenness and flatness, which are required when the film having a large area is used as a separator film for lithium-ion batteries for motor vehicles or domestic use.
Inventors:
MITSUOKA HIDETO (JP)
YAMADA KAZUHIRO (JP)
KIKUCHI SHINTARO (JP)
SAITO TOSHIYA (JP)
YAMADA KAZUHIRO (JP)
KIKUCHI SHINTARO (JP)
SAITO TOSHIYA (JP)
Application Number:
PCT/JP2013/076927
Publication Date:
April 10, 2014
Filing Date:
October 03, 2013
Export Citation:
Assignee:
TORAY BATTERY SEPARATOR FILM (JP)
International Classes:
C08J9/26; C08J9/00; H01M50/417; H01M50/489
Foreign References:
| JP2011516624A | 2011-05-26 | |||
| JP2006056929A | 2006-03-02 | |||
| JP2002264208A | 2002-09-18 |
Attorney, Agent or Firm:
BAN Toshimitsu et al. (JP)
Toshimitsu Ban (JP)
Toshimitsu Ban (JP)
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