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Title:
AIR FILTER MEDIUM, PLEATED FILTER MEDIUM, AIR FILTER UNIT, MASK FILTERING MEDIUM, AND METHOD OF RECYCLING AIR FILTER MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/255453
Kind Code:
A1
Abstract:
Provided are an air filter medium, a pleat pack, an air filter unit, a mask filtering medium, and a method of recycling air filter medium that allow for reuse with minimal performance loss from performing a sterilization treatment. An air filter medium (30) in which a porous fluoropolymer membrane (31) and a support material (32) that are layered, wherein: the permeability ratio (permeability after sterilization treatment/permeability before sterilization treatment), which is the ratio of permeability as ascertained using NaCl particles of a particle size of 0.1 μm with regard to the air filter medium (30) before and after sterilizing the porous fluoropolymer membrane (31) is 5.0 or less; and the pressure loss ratio (pressure loss after sterilization treatment/pressure loss before sterilization treatment), which is the ratio of the pressure loss of the air filter medium (30) before and after sterilizing the porous fluoropolymer membrane (31) is 0.83 to 1.15.

Inventors:
KIYOTANI HIDEYUKI
INUI KUNIHIKO
Application Number:
PCT/JP2022/022497
Publication Date:
December 08, 2022
Filing Date:
June 02, 2022
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
B01D39/16; B01D39/14; B01D46/52; B01D63/14; B01D65/06; B01D71/32; B01D71/36
Domestic Patent References:
WO2020067182A12020-04-02
WO2015146847A12015-10-01
WO2013157647A12013-10-24
WO2016104589A12016-06-30
WO2019230983A12019-12-05
WO2013157647A12013-10-24
WO2007046345A12007-04-26
WO2007119829A12007-10-25
WO2009001894A12008-12-31
WO2010113950A12010-10-07
WO2013027850A12013-02-28
WO2003033555A12003-04-24
WO2005061567A12005-07-07
WO2007005361A12007-01-11
WO2011055824A12011-05-12
WO2004050727A12004-06-17
WO2009020187A12009-02-12
WO2010114033A12010-10-07
Foreign References:
JP2020108881A2020-07-16
JP2013173078A2013-09-05
JPH07196831A1995-08-01
JPS5360979A1978-05-31
JPS57135A1982-01-05
JPS6116907A1986-01-24
JPS62104816A1987-05-15
JPS62190206A1987-08-20
JPS63137906A1988-06-09
JP2000143727A2000-05-26
JP2002201217A2002-07-19
JPS6042446A1985-03-06
JPS641711A1989-01-06
JPH02261810A1990-10-24
JPH11240917A1999-09-07
JPH11240918A1999-09-07
JPH10147617A1998-06-02
JPS61162503A1986-07-23
JPS4878252A1973-10-20
JPH07165828A1995-06-27
JP2006063140A2006-03-09
JP2009001745A2009-01-08
JP2010235667A2010-10-21
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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