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Title:
SPUNBONDED NONWOVEN FABRIC AND AIR FILTER USING THE SAME
Document Type and Number:
Japanese Patent JP2009275327
Kind Code:
A
Abstract:

To provide a high-performance spunbonded nonwoven fabric low in pressure loss and having high collective performance, suitably usable as an air filter in particular.

The spunbonded nonwoven fabric includes nonconductive fibers as the main constituent, wherein the nonconductive fibers are electrically charged. The spunbonded nonwoven fabric has the following characteristics: The pressure loss at a wind velocity of 6.5 m/min is 9 Pa or less. The collective efficiency for particles with diameters of 0.3 to 0.5 m is 70% or higher. The QF value is 0.25 Pa-1 or greater.


Inventors:
TSUNEMATSU KUMIKO
YAKAKE YOSHIKAZU
NISHIURA EIICHI
Application Number:
JP2008000130182
Publication Date:
November 26, 2009
Filing Date:
May 16, 2008
Export Citation:
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Assignee:
TORAY INDUSTRIES
TORAY FINECHEMICALS CO LTD
International Classes:
B01D39/14; B01D39/16; B03C3/28; D04H3/007; D04H3/033; D04H3/105; D04H3/16
Domestic Patent References:
JP3932981B22007-06-20
JP3286998B22002-05-27
Foreign References:
WO2005063359A12005-07-14
WO2008072554A12008-06-19
Attorney, Agent or Firm:
Kazuhiko Saisha
Shinichi Ogawa
Noguchi Kenteru