Title:
フィルター用濾材およびフィルター
Document Type and Number:
Japanese Patent JP7424298
Kind Code:
B2
Abstract:
The filter medium for a filter of the present invention has a laminate structure in which a long-fiber non-woven fabric and a wet non-woven fabric are stacked, wherein the wet non-woven fabric comprises vinylon, polyester, and polyvinyl alcohol, is disposed on a most upstream side of air flow, has a surface located on the most upstream side of air flow, the surface having a surface roughness (SMD) not larger than 2.7 µm, and has a surface stacked on the long-fiber non-woven fabric, the surface having (a) a surface roughness (SMD) not smaller than 3.0 µm or (b) a rough texture (MMD) not lower than 0.02.
Inventors:
Kento Takami
Application Number:
JP2020549725A
Publication Date:
January 30, 2024
Filing Date:
May 11, 2020
Export Citation:
Assignee:
Toyobo MC Co., Ltd.
International Classes:
B01D39/16; A61L9/014
Domestic Patent References:
| JP2012239621A | ||||
| JP9059859A | ||||
| JP2009242973A |
Foreign References:
| WO2019188923A1 | ||||
| WO2015115418A1 | ||||
| WO2009041257A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation ASFI International Patent Office