Title:
AIR FILTER COMPONENT, FILTER CARTRIDGE AND RESPIRATOR
Document Type and Number:
WIPO Patent Application WO/2023/133779
Kind Code:
A1
Abstract:
The present application relates to an air filter component, a filter cartridge and a respirator. The air filter component is made of a sheet, comprising: a filter portion comprising a first wave portion and a second wave portion; and a periphery portion formed integrally with the filter portion as a generally flat border surrounding the filter portion. The first wave portion and second wave portion are on opposite sides of the periphery portion, a maximum distance between the first wave portion and a top surface of the periphery portion is defined as a first distance, and a maximum distance between the second wave portion and a bottom surface of the periphery portion is defined as a second distance. The first sheet layer of the sheet is on an external facing side of the air filter component and the second sheet layer of the sheet is on an internal facing side of the air filter component, a fiber diameter of the first sheet layer is larger than a fiber diameter of any one of the other layers of the sheet, and the first distance is less than the second distance. The air filter component, the filter cartridge and the respirator equipped with the air filter component according to the present disclosure may improve the filter performance and at the same time improve the wearing safety and comfort.
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Inventors:
WEI JIAN (CN)
PARK HYOUNG SUN (KR)
KIM JUNGHAN (KR)
LEE JIN HO (KR)
MOON JUNGCHUL (KR)
CHOI KYUNG SUN (KR)
LEE SANGHOON (KR)
PARK HYOUNG SUN (KR)
KIM JUNGHAN (KR)
LEE JIN HO (KR)
MOON JUNGCHUL (KR)
CHOI KYUNG SUN (KR)
LEE SANGHOON (KR)
Application Number:
PCT/CN2022/071907
Publication Date:
July 20, 2023
Filing Date:
January 14, 2022
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES COMPANY (US)
WEI JIAN (CN)
WEI JIAN (CN)
International Classes:
B01D39/00; B01D46/52; B01D39/14
Foreign References:
| JPH0634719U | 1994-05-10 | |||
| JP2012152706A | 2012-08-16 | |||
| CN109641169A | 2019-04-16 | |||
| CN103237584A | 2013-08-07 | |||
| US20140174046A1 | 2014-06-26 | |||
| CN104226026A | 2014-12-24 | |||
| CN102458584A | 2012-05-16 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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