Title:
微多孔膜およびその製造方法
Document Type and Number:
Japanese Patent JP4012822
Kind Code:
B2
Abstract:
A microporous film being made of a polyethylene resin of a weight average molecular weight of less than 380,000 and having a porosity of 50 to 95 % and an average pore diameter of 0.01 to 1 mu m, which comprises a framework of a three-dimensional network in which macrofibrils having an average diameter of 0.2 to 1 mu m are connected with one another over the whole microporous film and openings being formed by the framework and having an average diameter of 0.1 mu m or more and less than 3 mu m, wherein the opening forms a screen through the bridging with microfibrils being branched from the macrofibrils and having an average diameter of 0.01 mu m or more and less than 0.2 mu m.
Inventors:
Hojuzan Izumi
Hitoshi Shimada
Hitoshi Shimada
Application Number:
JP2002571201A
Publication Date:
November 21, 2007
Filing Date:
March 07, 2002
Export Citation:
Assignee:
Asahi Kasei Chemicals Corporation
International Classes:
C08J9/26; B01D67/00; B01D69/02; B01D71/26; B29D7/01; C08J5/18
Domestic Patent References:
| JP2000072917A |