NON-WOVEN FABRIC AND BATTERY USING THE SAME

Japanese Patent JP3917873

B2

PROBLEM TO BE SOLVED: To provide a non-woven fabric which has an excellent liquid-holding ability over a long period, a large liquid-absorbing speed and an excellent mechanical strength, and to provide a battery using the same.
SOLUTION: This non-woven fabric comprising high strength fibers having a tensile strength of ≥6 cN/dtex and ultra fine fibers having a fiber diameter of ≤4 μm is characterized in that the fibers in an amount of >70 mass % in the non-woven fabric has a polyethylene-based resin on their fiber surfaces and that oxygen-containing functional groups exist in a larger amount in the non-woven fabric than that on the surfaces of the non-woven fabric. The high strength fibers of the non-woven fabric preferably have the polyethylene-based resin on the fiber surfaces. The ultra fine fibers of the non-woven fabric preferably comprise island components obtained by removing sea components from sea-island type fibers. The non-woven fabric can suitably be used as separators for batteries or as separators for electric double layer capacitors. The battery uses the non-woven fabric as the separator.

Takase Toshiaki
Yasuhiro Ito
Masanao Tanaka
Anaya Anaya

JP2002033253A

May 23, 2007

February 08, 2002

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Japan Vilene Co., Ltd.

D06M10/02; D04H1/4291; D04H1/4382; D06M11/00; D06M11/34; D21H13/14; D21H15/10; D21H25/04; H01M2/16; H01M6/04; H01M10/02; D06M101/20; (IPC1-7): D06M10/02; D04H1/42; D06M11/34; D21H13/14; D21H15/10; D21H25/04; H01M2/16; //H01M6/04; H01M10/02; D06M101:20

JP10312787A
JP10284042A
JP10053657A
JP11329669A
JP2000327816A

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