FILTER MEDIUM FOR AIR FILTER, FILTER PLEAT PACK, AND AIR FILTER UNIT

Title:

FILTER MEDIUM FOR AIR FILTER, FILTER PLEAT PACK, AND AIR FILTER UNIT

Document Type and Number:

WIPO Patent Application WO/2019/059382

Kind Code:

A1

Abstract:

This filter medium for an air filter comprises a laminate composed of a polytetrafluoroethylene (PTFE) porous membrane and an air permeable support material, wherein: the repulsive force generated in the filter medium when the filter medium is compressed in the thickness direction is 30-150 kPa at a compression rate of 30%; and at least one main surface of the filter medium is composed of the air-permeable support material and has a maximum friction coefficient of 24 gf or less. The filter medium for an air filter according to the present invention is a filter medium using the PTFE porous membrane, wherein the deterioration in collection efficiency due to pleat processing is suppressed.

Inventors:

HORIE YURI (JP)
MORI MASAAKI (JP)
ARIMITSU YUKIO (JP)

Application Number:

PCT/JP2018/035211

Publication Date:

March 28, 2019

Filing Date:

September 21, 2018

Export Citation:

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Assignee:

NITTO DENKO CORP (JP)

International Classes:

B01D39/16; B01D46/52; B01D63/14; B01D71/36

Foreign References:

JP2003190749A	2003-07-08
JP2017064713A	2017-04-06
JP2000061280A	2000-02-29
JP2007111697A	2007-05-10
JP2017164680A	2017-09-21
JP2001170461A	2001-06-26
JP2002066226A	2002-03-05

Other References: