FILTER MEDIUM FOR AIR FILTERS AND METHOD FOR PRODUCING SAME

Title:

FILTER MEDIUM FOR AIR FILTERS AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2022/003965

Kind Code:

A1

Abstract:

The present disclosure addresses the problem of providing: a filter medium for air filters, said filter medium achieving a high PF value and high water repellency, while having practically sufficient stiffness and strength; and a method for easily producing this filter medium. A filter medium for air filters according to the present disclosure is formed of a wet nonwoven fabric that contains glass fibers, and this filter medium for air filters is characterized in that a cationic binder resin, a fluorine resin and a cationic surfactant are contained in this filter medium, and the solid content mass ratio of the fluorine resin to the surfactant is within the range of from 30/70 to 80/20.

Inventors:

TASHIRO NOZOMI (JP)
SATO MASASHI (JP)

Application Number:

PCT/JP2020/026245

Publication Date:

January 06, 2022

Filing Date:

July 03, 2020

Export Citation:

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Assignee:

HOKUETSU CORP (JP)

International Classes:

B01D39/20; D04H1/4218; D21H13/40

Domestic Patent References:

WO2014171165A1

2014-10-23

Foreign References:

JP2014221456A	2014-11-27
JP2010094580A	2010-04-30
JP2016097336A	2016-05-30
JP2010094580A	2010-04-30
JP2014221456A	2014-11-27
JP2017042762A	2017-03-02
JP2018038983A	2018-03-15

Other References: