Title:
ポリオレフィン微多孔膜
Document Type and Number:
Japanese Patent JP4711965
Kind Code:
B2
Abstract:
Disclosed is a polyolefin microporous membrane including a multilayer film having two or more layers. In this polyolefin microporous membrane, at least one surface layer has a thickness of not less than 0.2 µm but not more than 5 µm and contains inorganic particles, while at least one layer contains a polyethylene and has an air permeability of not less than 50 second/100 cc but not more than 1000 second/100 cc and a puncture strength of not less than 3.0 N/20 µm.
Inventors:
Masahiro Ohashi
Hiroshi Togawa
Hiroshi Togawa
Application Number:
JP2006539252A
Publication Date:
June 29, 2011
Filing Date:
September 29, 2005
Export Citation:
Assignee:
Asahi Kasei E-materials Co., Ltd.
International Classes:
B32B27/32; B32B5/32; H01M50/417; H01M50/451; H01M50/457; H01M50/489; H01G9/02; H01M8/02
Domestic Patent References:
| JP2002321323A | 2002-11-05 | |||
| JP2001266828A | 2001-09-28 |
Foreign References:
| WO2002065561A1 | 2002-08-22 |
Attorney, Agent or Firm:
Yoshio Narui
Hideo Takei
Yoshiaki Matsui
Hideo Takei
Yoshiaki Matsui