Title:
POLYOLEFIN COMPOSITE POROUS FILM, METHOD FOR PRODUCING SAME, BATTERY SEPARATOR, AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/093184
Kind Code:
A1
Abstract:
Provided is a polyolefin composite porous film that makes it possible to improve impact resistance in addition to improving battery characteristics such as external short circuit resistance and high-temperature heat resistance in recent battery designs having high energy density. The polyolefin composite porous film comprises: a first layer containing polypropylene (A), a first high-density polyethylene (B) having a melting point of 130°C or more, and a second high-density polyethylene (C) having a melting point of 120°C or more and less than 130°C; and a second layer containing polyethylene (D). The first layer and the second layer are laminated together in an integrated manner.
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Inventors:
NAKAJIMA KONOMI (JP)
HARUMOTO KOSUKE (JP)
MATSUSHITA KATSUHIKO (JP)
LI DAN (JP)
HARUMOTO KOSUKE (JP)
MATSUSHITA KATSUHIKO (JP)
LI DAN (JP)
Application Number:
PCT/JP2018/040199
Publication Date:
May 16, 2019
Filing Date:
October 29, 2018
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B32B27/32; B32B5/18; C08J9/26; H01M50/406; H01M50/417; H01M50/449; H01M50/489; H01M50/491
Domestic Patent References:
WO2015194667A1 | 2015-12-23 | |||
WO2015190264A1 | 2015-12-17 | |||
WO2014065331A1 | 2014-05-01 | |||
WO2015194667A1 | 2015-12-23 | |||
WO2006137540A1 | 2006-12-28 |
Foreign References:
JP2012521914A | 2012-09-20 | |||
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JP2012089346A | 2012-05-10 | |||
JP2012522354A | 2012-09-20 | |||
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Other References:
See also references of EP 3708363A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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