Title:
LAYERED POROUS FILM, SEPARATOR FOR ELECTRICITY-STORING DEVICE, AND ELECTRICITY-STORING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/026482
Kind Code:
A1
Abstract:
The present invention provides a micropore film with which it is possible to minimize the incidence of warpage, the micropore film having excellent performance in regard to absorbing a liquid electrolyte. In this layered porous film: a porous layer containing a filler is layered on at least one surface of a polyolefin porous film containing polypropylene as a raw material; and in cases where the porous layer containing a filler is configured as the upper surface or lower surface when a square of the layered porous film is allowed to stand for one hour at a temperature of 23°C and a dewpoint of ‒20°C, the total amount of lift-off, which is the total amount of uplift of the four sides, is equal to or less than 10 mm. The square of said film is cut such that the length of the machine-direction side is 60 mm and the length in a direction substantially orthogonal to the machine direction is also 60 mm.
Inventors:
OHYA SHUSEI (JP)
MATSUBAYASHI AKIHIRO (JP)
KAMADA ASUMI (JP)
MATSUBAYASHI AKIHIRO (JP)
KAMADA ASUMI (JP)
Application Number:
PCT/JP2016/073441
Publication Date:
February 16, 2017
Filing Date:
August 09, 2016
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
International Classes:
B32B5/18; B32B9/00; H01G11/52; H01M50/409; H01M50/443; H01M50/489
Domestic Patent References:
| WO2015064726A1 | 2015-05-07 | |||
| WO2013002164A1 | 2013-01-03 |
Foreign References:
| JP5943148B1 | 2016-06-29 | |||
| JP2016143469A | 2016-08-08 | |||
| JP2016183209A | 2016-10-20 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
Download PDF: