Title:
A porous polyolefin film, a lamination porosity film, and an accumulation-of-electricity device
Document Type and Number:
Japanese Patent JP6089581
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a porous polyolefin film which is suitably used as a separator for an electricity storage device, the film being excellent in planarity by being suppressed in wrinkle generation of the film transported in a step of coating a functional layer improved in productivity using an organic solvent having a high drying speed in the separator having the functional layer such as a heat resistive layer.SOLUTION: The porous polyolefin film has a friction coefficient μk with a metal of ≤1.2 in the film longitudinal direction and a dimensional change of expansion or contraction of ≤0.3% in the film width direction in a state of the film being immersed in acetone.
Inventors:
Yasuyuki Imanishi
Masatoshi Okura
Kei Ikoma
Senji Yoshinobu
Kitamura Osamu
Masatoshi Okura
Kei Ikoma
Senji Yoshinobu
Kitamura Osamu
Application Number:
JP2012234503A
Publication Date:
March 08, 2017
Filing Date:
October 24, 2012
Export Citation:
Assignee:
TORAY INDUSTRIES,INC.
International Classes:
C08J9/00; B32B5/18; H01G9/02; H01M2/16
Domestic Patent References:
| JP2011126275A |
Foreign References:
| WO2011108539A1 | ||||
| US20120329894 | ||||
| WO2010027203A1 | ||||
| US20120034509 | ||||
| US20120231323 | ||||
| WO2010073707A1 | ||||
| US20110262814 | ||||
| WO2005103127A1 |
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