Title:
WET TYPE NONWOVEN FABRIC
Document Type and Number:
Japanese Patent JP2019203216
Kind Code:
A
Abstract:
To provide a wet type nonwoven fabric which can be made into an electret filter medium, has a small reduction width of collection efficiency after losing electrostatic force, and can achieve high collection efficiency and low pressure loss in good balance.SOLUTION: The wet type nonwoven fabric is composed of 3 or more kinds of cross section fibers, wherein the nonwoven fabric contains a fiber 5 (staple fiber A) provided with 8 or over slits on its surface and having a fiber diameter of 5.0-50.0 μm, an ultrafine fiber 6 (staple fiber B) having a fiber diameter of 3.0 μm or under, and an irregular shape cross section fiber 7 (staple fiber C) having a fiber diameter of 2-fold or more of the staple fiber B and having an irregular shape degree of 1.2 or more.SELECTED DRAWING: Figure 2
Inventors:
YAMANAKA HIROBUMI
MASUDA MASATO
ASADA YASUHIRO
KANO HIDEKAZU
MASUDA MASATO
ASADA YASUHIRO
KANO HIDEKAZU
Application Number:
JP2018098696A
Publication Date:
November 28, 2019
Filing Date:
May 23, 2018
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
D21H13/14; B01D39/16; B03C3/28; D04H1/4382; D04H1/4391; D21H15/02
Domestic Patent References:
| JP2010528194A | 2010-08-19 | |||
| JP2009000608A | 2009-01-08 | |||
| JPH09308808A | 1997-12-02 | |||
| JP2017131890A | 2017-08-03 | |||
| JP2016176173A | 2016-10-06 | |||
| JPS54125793A | 1979-09-29 | |||
| JP2018100459A | 2018-06-28 |
Foreign References:
| WO2016104784A1 | 2016-06-30 | |||
| WO2000053831A1 | 2000-09-14 |