Invention Grant
- Patent Title: Air filter medium, air filter pack, and air filter unit
-
Application No.: US16337806Application Date: 2017-09-25
-
Publication No.: US11213782B2Publication Date: 2022-01-04
- Inventor: Takashi Niki , Masaaki Mori , Shiho Wada , Atsushi Daimon , Toshiki Yanagi
- Applicant: NITTO DENKO CORPORATION
- Applicant Address: JP Osaka
- Assignee: NITTO DENKO CORPORATION
- Current Assignee: NITTO DENKO CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JPJP2016-194418 20160930
- International Application: PCT/JP2017/034584 WO 20170925
- International Announcement: WO2018/062113 WO 20180405
- Main IPC: B01D46/54
- IPC: B01D46/54 ; B01D71/36 ; B01D46/52 ; B01D46/00 ; B01D39/16 ; B29D99/00 ; C08J9/24 ; C08J9/00 ; B29K27/18
Abstract:
An air filter medium includes a first porous PTFE membrane and a second porous PTFE membrane. The air filter medium (10) has a first main surface and a second main surface, and the first porous PTFE membrane and the second porous PTFE membrane are arranged so that an air flow moving from the first main surface to the second main surface passes through the first porous PTFE membrane and subsequently through the second porous PTFE membrane. A thickness of the first porous PTFE membrane is in the range of 4 to 40 μm and a specific surface area of the first porous PTFE membrane is 0.5 m2/g or less.
Public/Granted literature
- US20190224609A1 AIR FILTER MEDIUM, AIR FILTER PACK, AND AIR FILTER UNIT Public/Granted day:2019-07-25
Information query
IPC分类:
