Title:
LOW-BASIS-WEIGHT FILTER MEDIA FOR AIR FILTERS
Document Type and Number:
WIPO Patent Application WO/2010/122999
Kind Code:
A1
Abstract:
Provided is a low-basis-weight filter media for air filters; said filter media remediates the problem of tear strength and water repellency declining with decreasing basis weight, and also can meet fire-resistance demands. The base fibers constituting the filter media are short glass fibers (A) and hydrophobized synthetic short fibers (B), said hydrophobized synthetic short fibers having fiber diameters of no more than 5 μm. (A) and (B) are blended with a mass ratio (A/B) between 70/30 and 95/5. For each 100 parts by mass of the aforementioned base fibers, 3 to 10 parts by mass of a hydrophobic synthetic resin binder are added. The basis weight of the filter media is between 25 and 50 g/m²
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Inventors:
SOYAMA TOSHIHIKO (JP)
SATO MASASHI (JP)
SATO MASASHI (JP)
Application Number:
PCT/JP2010/057005
Publication Date:
October 28, 2010
Filing Date:
April 20, 2010
Export Citation:
Assignee:
HOKUETSU KISHU PAPER CO LTD (JP)
SOYAMA TOSHIHIKO (JP)
SATO MASASHI (JP)
SOYAMA TOSHIHIKO (JP)
SATO MASASHI (JP)
International Classes:
B01D39/14; D21H13/10; D21H13/40; D21H27/08
Domestic Patent References:
| WO2002016005A1 | 2002-02-28 |
Foreign References:
| JP2008246321A | 2008-10-16 | |||
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Other References:
See also references of EP 2422866A4
Attorney, Agent or Firm:
IMASHITA, Katsuhiro et al. (JP)
Under now Katsuhiro (JP)
Under now Katsuhiro (JP)
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