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Title:
FILTER MATERIAL-USE NONWOVEN FABRIC AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2019/117029
Kind Code:
A1
Abstract:
[Problem] To provide a filter material-use nonwoven fabric which exhibits excellent durability and good dust shake-off performance, which is stable over long periods and is capable of filtering dust in exhaust gas, and with which dust clogs according to the filter conditions desired for filter material-use nonwoven fabrics, particularly nonwoven fabrics used in bag filters, can be prevented. [Solution] A filter material-use nonwoven fabric comprises 20 to 100% by mass of amorphous polyphenylene sulfide fibers and 0 to 80% by mass of heat-resistant fibers, the fabric having the basis weight of 80 to 400 g/m2, wherein: the initial outlet dust concentration obtained in a VDI test is 1.5 mg/m3 or less; and the value of (post-load residual pressure loss/initial residual pressure loss) as obtained in a VDI test is 2.5 or less.

Inventors:
TOKUMARU, Toshihiko (LTD. 2-8 Dojima Hama 2-chome, Kita-ku, Osaka-sh, Osaka 30, 〒5308230, JP)
Application Number:
JP2018/045059
Publication Date:
June 20, 2019
Filing Date:
December 07, 2018
Export Citation:
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Assignee:
TOYOBO CO., LTD. (2-8 Dojima Hama 2-chome, Kita-ku Osaka-sh, Osaka 30, 〒5308230, JP)
International Classes:
B01D39/16; D04H1/4326; D04H1/541
Foreign References:
JPS61289162A1986-12-19
JP2007175567A2007-07-12
JP2016187767A2016-11-04
JP2017164727A2017-09-21
JP2016187768A2016-11-04
JP2016165666A2016-09-15
JP2008179938A2008-08-07
JP2008161803A2008-07-17
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