Title:
AIR FILTER MATERIAL USING MULTILAYER ELECTRET NONWOVEN FABRIC
Document Type and Number:
WIPO Patent Application WO/2011/004696
Kind Code:
A1
Abstract:
Disclosed is an air filter material which uses a multilayer electret nonwoven fabric that is obtained by arranging one or more layers of a nonwoven fabric (a nonwoven fabric B) which is formed from fibers having an average fiber diameter of 10-100 μm on at least one surface of a nonwoven fabric (a nonwoven fabric A) which is obtained by mixing two kinds of fibers that have an average fiber diameter of 0.1-15 μm and different melting points (hereinafter the fibers having the lower melting point are referred to as the fibers D and the fibers having the higher melting point are referred to as the fibers E), and subjecting the resulting multilayer nonwoven fabric to electret processing. In this connection, the average fiber diameter of the fibers constituting the nonwoven fabric B is larger than the average fiber diameter of the fibers constituting the nonwoven fabric A. The multilayer electret filter material has a low pressure loss and a high collection efficiency. The filter material is suitable for applications as masks for medical use, masks for industrial use, masks for general use, and the like.
Inventors:
MATSUDA Yasushi (())
松田康志 (())
IWATA Junji (())
松田康志 (())
IWATA Junji (())
Application Number:
JP2010/060482
Publication Date:
January 13, 2011
Filing Date:
June 21, 2010
Export Citation:
Assignee:
CHISSO CORPORATION (3-23, Nakanoshima 3-chome Kita-ku, Osaka-sh, Osaka 08, 〒5306108, JP)
チッソ株式会社 (〒08 大阪府大阪市北区中之島三丁目３番２３号 Osaka, 〒5306108, JP)
CHISSO POLYPRO FIBER CO., LTD. (2-1 Otemachi 2-chome, Chiyoda-ku Tokyo, 05, 〒1008105, JP)
チッソポリプロ繊維株式会社 (〒05 東京都千代田区大手町二丁目２番１号 Tokyo, 〒1008105, JP)
MATSUDA Yasushi (())
チッソ株式会社 (〒08 大阪府大阪市北区中之島三丁目３番２３号 Osaka, 〒5306108, JP)
CHISSO POLYPRO FIBER CO., LTD. (2-1 Otemachi 2-chome, Chiyoda-ku Tokyo, 05, 〒1008105, JP)
チッソポリプロ繊維株式会社 (〒05 東京都千代田区大手町二丁目２番１号 Tokyo, 〒1008105, JP)
MATSUDA Yasushi (())
International Classes:
B01D39/16; B01D39/14; B03C3/28; B32B5/26; D04H1/42; D04H3/02; D04H3/14
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (26th Floor, OAP TOWER 8-30, Tenmabashi 1-chome, Kita-ku, Osaka-sh, Osaka 26, 〒5306026, JP)
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