Title:
FILTER MEDIUM AND FILTER UNIT PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2019/230984
Kind Code:
A1
Abstract:
A filter medium according to the present disclosure is provided with a base material layer having air permeability; and the base material layer has a surface modified by polytetrafluoroethylene fibrils. The modified surface of the base material layer may be exposed. The modification amount of the fibrils in the modified surface is, for example, less than 0.5 g/m2. The base material layer may be composed of fibers; and one example of the base material layer that is composed of fibers is a nonwoven fabric. A filter medium according to the present disclosure is able to suppress permeation of water into the filter medium.
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Inventors:
UCHIYAMA SHIHO (JP)
Application Number:
PCT/JP2019/021892
Publication Date:
December 05, 2019
Filing Date:
May 31, 2019
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B01D39/16; B01D46/52; B01D69/02; B01D69/10; B01D69/12; B01D71/26; B01D71/36; B01D71/48
Foreign References:
| JP2013173078A | 2013-09-05 | |||
| JP2013032514A | 2013-02-14 | |||
| JP2000140587A | 2000-05-23 | |||
| JP2004352976A | 2004-12-16 | |||
| JP2014030825A | 2014-02-20 |
Other References:
See also references of EP 3812026A4
Attorney, Agent or Firm:
KAMADA Koichi (JP)
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