Invention Application
- Patent Title: AIR FILTER MEDIUM, AIR FILTER PACK, AND AIR FILTER UNIT
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Application No.: US16337795Application Date: 2017-09-25
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Publication No.: US20200002495A1Publication Date: 2020-01-02
- 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
- Priority: JP2016-194414 20160930
- International Application: PCT/JP2017/034582 WO 20170925
- Main IPC: C08J9/00
- IPC: C08J9/00 ; B01D39/16 ; B01D46/52 ; B01D63/14 ; B01D69/02 ; B01D71/36
Abstract:
An air filter medium includes a first porous PTFE membrane and a second porous PTFE membrane. The air filter medium 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 proportion of areas occupied by the plurality of nodes on a surface of the first porous PTFE membrane is in the range of 1.5 to 3.0% and an average of the areas of the plurality of nodes is 200 μm2 or more.
Public/Granted literature
- US11427690B2 Air filter medium, air filter pack, and air filter unit Public/Granted day:2022-08-30
Information query
