Title:
AIR FILTER
Document Type and Number:
WIPO Patent Application WO/2023/282153
Kind Code:
A1
Abstract:
The present invention suppresses deterioration of trapping efficiency in an air filter comprising multiple layers due to an adhesive used to integrate filter layers with each other. This air filter (1) comprises: a first filter layer (10) that is an air-permeable synthetic resin fiber layer; and second filter layers (20) that are air-permeable and that sandwich the first filter layer (10). The first filter layer (10) and the second filter layers (20) are integrated with each other via an adhesive layer (30) comprising multiple fibrous hot-melt rows that are distributed so as to form air-permeable gaps.
Inventors:
FUKASAWA YASUHIKO (JP)
Application Number:
PCT/JP2022/026042
Publication Date:
January 12, 2023
Filing Date:
June 29, 2022
Export Citation:
Assignee:
KOKEN KK (JP)
International Classes:
B01D39/16; B01D39/12; B01D39/14; D04H1/593
Domestic Patent References:
| WO2020017472A1 | 2020-01-23 |
Foreign References:
| JP2000176262A | 2000-06-27 |
Attorney, Agent or Firm:
SHIRAHAMA INTERNATIONAL PPC (JP)
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