Title:
FILTER MATERIAL AND FILTER UNIT
Document Type and Number:
WIPO Patent Application WO/2020/189537
Kind Code:
A1
Abstract:
The purpose of one or more embodiments of the present invention is to reduce pressure loss during ventilation of a pleated filter material in which crest parts and trough parts are continuously provided in an alternating manner, and the pitch of a crest part with regards to at least one surface is 5.0 mm or less. The filter material 10, according to one or more embodiments of the present invention, includes a first fiber sheet 11, which is a skeletal material layer, and a second fiber sheet 12, which is a dust collecting layer, and is characterized by having a pleated shape in which a crest part A and a trough part B are continuously alternated, a height H of the crest part A is 5-50 mm, and a pitch X of the crest part A with regards to at least one surface S1 is 0.5-5.0 mm, and by having a thickness D of the filter material 10 of 0.10-0.43 mm, and a stiffness of the filter material 10 according to the Gurley method of 1000 μN or greater.
Inventors:
IKIO RYOSUKE (JP)
ASADA YASUHIRO (JP)
YAMAGA NAOKI (JP)
ASADA YASUHIRO (JP)
YAMAGA NAOKI (JP)
Application Number:
PCT/JP2020/010999
Publication Date:
September 24, 2020
Filing Date:
March 13, 2020
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D39/16; B01D39/18; B01D46/52; B32B5/26
Domestic Patent References:
| WO2008120572A1 | 2008-10-09 |
Foreign References:
| JP2015187325A | 2015-10-29 | |||
| JP2003093821A | 2003-04-02 | |||
| JPS6216284A | 1987-01-24 | |||
| JPH11141065A | 1999-05-25 | |||
| JP2017155385A | 2017-09-07 | |||
| JP2009208014A | 2009-09-17 | |||
| JP2015140495A | 2015-08-03 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
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