Title:
FILTER MATERIAL FOR AIR FILTERS
Document Type and Number:
WIPO Patent Application WO/2023/037440
Kind Code:
A1
Abstract:
The present disclosure addresses the problem of providing a filter material, for air filters, containing a renewable material as a main component, having biodegradability, and having sufficient water repellency. The filter material for air filters according to the present disclosure is characterized in that fibers forming the filtering material include beaten fibers and un-beaten fibers, the beaten fibers are fibrillated lyocell fibers, the un-beaten fibers are biodegradable fibers, the mass ratio (beaten fibers/un-beaten fibers) of the beaten fibers with respect to the un-beaten fibers is in a range of 3/97 to 20/80, and the filtering material contains a water repellent containing, as a main component, a hydrocarbon-based polymer not including fluorine in the molecule thereof.
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Inventors:
MEGURO EIKO (JP)
SATO MASASHI (JP)
SATO MASASHI (JP)
Application Number:
PCT/JP2021/032989
Publication Date:
March 16, 2023
Filing Date:
September 08, 2021
Export Citation:
Assignee:
HOKUETSU CORP (JP)
International Classes:
B01D39/16; B01D39/18; D21H11/18
Domestic Patent References:
| WO2015008868A1 | 2015-01-22 |
Foreign References:
| JP2006167659A | 2006-06-29 | |||
| JP2006326470A | 2006-12-07 | |||
| JP2014073432A | 2014-04-24 | |||
| JP2008000652A | 2008-01-10 | |||
| US20150107208A1 | 2015-04-23 | |||
| JP2000153116A | 2000-06-06 | |||
| JP2005515879A | 2005-06-02 |
Attorney, Agent or Firm:
IMASHITA, Katsuhiro et al. (JP)
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