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Title:
POROUS, ELECTRICALLY CONDUCTIVE SHEET AND METHOD FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2001/022509
Kind Code:
A1
Abstract:
A porous, electrically conductive sheet, which (a) comprises a sheet formed with a number of carbon fibers having an organic substance adhered thereto, (b) has an electrical resistance in the direction of thickness of 50 m $g(V) cm?2¿ or less, (c) has a maximum diameter for causing fracture of 25 mm or less, and (d) has a compression ratio (the ratio of a thickness of a compressed sheet to that of an original sheet) of 40 % or less. The porous, electrically conductive sheet can be produced by a method comprising (a) a sheet-forming step of scooping a number of carbon fibers being dispersed in a liquid up onto a net to thereby form a carbon fiber sheet, (b) an organic substance adhesion step of rendering an organic substance to adhere to the formed carbon fiber sheet as a binder for carbon fibers, (c) a drying step of drying the sheet having the organic substance adhered thereto, and (d) a pressing step of pressing the dried sheet with a face pressure of 0.49 to 9.8 Mpa and/or of subjecting the sheet to a roll pressing with a clearance of 300 $g(m) µm or less.

Inventors:
Inoue, Mikio (13-1, Sonoyama 2-chome Otsu-shi Shiga, 520-0842, JP)
Nakae, Takeji (29-23, Jinryou 2-chome Otsu-shi Shiga, 520-2132, JP)
Application Number:
PCT/JP2000/006382
Publication Date:
March 29, 2001
Filing Date:
September 19, 2000
Export Citation:
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Assignee:
TORAY INDUSTRIES, INC. (2-1 Nihonbashi Muromachi 2-chome Chuo-ku Tokyo, 103-8666, JP)
Inoue, Mikio (13-1, Sonoyama 2-chome Otsu-shi Shiga, 520-0842, JP)
Nakae, Takeji (29-23, Jinryou 2-chome Otsu-shi Shiga, 520-2132, JP)
International Classes:
D21H13/50; H01B1/24; H01M4/96; (IPC1-7): H01M4/96; C25B11/03; D06M15/19; D21H13/50; D21H19/10
Foreign References:
EP0184638A21986-06-18
US4759989A1988-07-26
JPH10125334A1998-05-15
JPH09278558A1997-10-28
JPH10162838A1998-06-19
Other References:
See also references of EP 1139471A4
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