Title:
SPUNLACE NON-WOVEN FABRIC AND FILTER MATERIAL PREPARED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2023/202649
Kind Code:
A1
Abstract:
Disclosed in the present invention are a spunlace non-woven fabric and a filter material prepared therefrom. The spunlace non-woven fabric contains 40-100% by weight of superfine polyphenylene sulfide fibers and 0-60% by weight of ordinary polyphenylene sulfide fibers, wherein the average fineness of the superfine polyphenylene sulfide fibers is 0.6-1.1 dtex. In a longitudinal cross section of the spunlace non-woven fabric, the cross section of fibers is in a flat or round shape, and within the thickness range of 50 μm from the upper surface of the non-woven fabric, the proportion of the fibers having a flat cross section to all the fibers is 25% or more. The spunlace non-woven fabric of the present invention has the characteristics of a stable structure and a small pore size, and the filter material prepared therefrom has the characteristics of high trapping efficiency, low pressure loss and longer cycle time. The filter material of the present invention can be applied to the filtering fields of garbage incinerators, coal-fired boilers or metal smelting furnaces, etc., under the condition of a high filtering wind speed of 1.5 m/min.
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Inventors:
ZHANG LEI (CN)
ZHOU HAOLIANG (CN)
MENG XUE (CN)
KAJIYAMA HIROSHI (CN)
ZHOU HAOLIANG (CN)
MENG XUE (CN)
KAJIYAMA HIROSHI (CN)
Application Number:
PCT/CN2023/089369
Publication Date:
October 26, 2023
Filing Date:
April 20, 2023
Export Citation:
Assignee:
TORAY FIBERS & TEXTILES RES LABORATORIES CHINA CO LTD (CN)
International Classes:
B01D39/08; D04H1/4366
Foreign References:
| JP2008161802A | 2008-07-17 | |||
| CN110603083A | 2019-12-20 | |||
| CN114130121A | 2022-03-04 | |||
| CN103877788A | 2014-06-25 | |||
| CN114247212A | 2022-03-29 | |||
| CN101406779A | 2009-04-15 | |||
| CN112776437A | 2021-05-11 |
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