Title:
COMPOSITE POROUS MEMBRANE, METHOD FOR PRODUCING COMPOSITE POROUS MEMBRANE AND BATTERY SEPARATOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2011/161837
Kind Code:
A1
Abstract:
Disclosed is a composite porous membrane which can achieve both an excellent adhesiveness of a heat-resistant resin layer and a small rise in gas permeation resistance even in the case of further reducing the thickness of membranes to be used, for example, battery separators. Specifically disclosed is a composite porous membrane comprising a porous membrane (A) formed of a polyolefin-based resin and a porous membrane (B) containing a heat-resistant resin, said porous membrane (B) being laminated on said porous membrane (A), wherein said porous membrane (A) has a thickness being within a specific range, an average pore size being within a specific range and a porosity being within a specific range and the thickness of the entire composite porous membrane is within a specific range, characterized in that, in said composite porous membrane, the peel strength at the interface between the specific porous membrane (A) and porous membrane (B) is within a specific range and the difference between the gas permeation resistance of the entire composite porous membrane and the gas permeation resistance of the porous membrane (A) is also within a specific range.
Inventors:
MIZUNO, Naoki (1-1 Katata 2-chome, Ohtsu-sh, Shiga 92, 〒5200292, JP)
水野 直樹 (〒92 滋賀県大津市堅田二丁目１番１号 東洋紡績株式会社 総合研究所内 Shiga, 〒5200292, JP)
IRIE, Michihiko (1-1 Katata 2-chome, Ohtsu-sh, Shiga 92, 〒5200292, JP)
入江 達彦 (〒92 滋賀県大津市堅田二丁目１番１号 東洋紡績株式会社 総合研究所内 Shiga, 〒5200292, JP)
水野 直樹 (〒92 滋賀県大津市堅田二丁目１番１号 東洋紡績株式会社 総合研究所内 Shiga, 〒5200292, JP)
IRIE, Michihiko (1-1 Katata 2-chome, Ohtsu-sh, Shiga 92, 〒5200292, JP)
入江 達彦 (〒92 滋賀県大津市堅田二丁目１番１号 東洋紡績株式会社 総合研究所内 Shiga, 〒5200292, JP)
Application Number:
JP2010/064507
Publication Date:
December 29, 2011
Filing Date:
August 26, 2010
Export Citation:
Assignee:
TORAY INDUSTRIES, INC. (1-1 Nihonbashi-Muromachi 2-chome, Chuo-ku Tokyo, 66, 〒1038666, JP)
東レ株式会社 (〒66 東京都中央区日本橋室町２丁目１番１号 Tokyo, 〒1038666, JP)
MIZUNO, Naoki (1-1 Katata 2-chome, Ohtsu-sh, Shiga 92, 〒5200292, JP)
水野 直樹 (〒92 滋賀県大津市堅田二丁目１番１号 東洋紡績株式会社 総合研究所内 Shiga, 〒5200292, JP)
IRIE, Michihiko (1-1 Katata 2-chome, Ohtsu-sh, Shiga 92, 〒5200292, JP)
東レ株式会社 (〒66 東京都中央区日本橋室町２丁目１番１号 Tokyo, 〒1038666, JP)
MIZUNO, Naoki (1-1 Katata 2-chome, Ohtsu-sh, Shiga 92, 〒5200292, JP)
水野 直樹 (〒92 滋賀県大津市堅田二丁目１番１号 東洋紡績株式会社 総合研究所内 Shiga, 〒5200292, JP)
IRIE, Michihiko (1-1 Katata 2-chome, Ohtsu-sh, Shiga 92, 〒5200292, JP)
International Classes:
B32B27/32; B32B5/18; H01M2/16
Attorney, Agent or Firm:
KAZAHAYA, Nobuaki et al. (Shin-Ei Building 6th Fl, 6-20 Tosabori 1-chome, Nishi-ku, Osaka-sh, Osaka 01, 〒5500001, JP)
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Claims: