METHOD FOR PRODUCING HIGHLY EFFECTIVE, LOW RESISTANT FIBER COMPOSITE FILTERING MATERIAL

WIPO Patent Application WO/2015/158273

A1

A method for producing a highly effective, low resistant fiber composite filtering material, comprising the steps of: mixing polymer chips and modified nano ferrous ferric oxide having a weight ratio of 1 : 0.04-0.10, and stirring to an even consistency; adding to the mixture a modifying agent using a weight ratio between the polymer chips and the modifying agent of 1 : 0.007-0.010, stirring to an even consistency, and raising the temperature to 180-220℃, so that the mixture melts; using a screw extruder to perform melt extrusion of the melt material from the previous step and ejecting through a spinneret, and performing deep antistatic finishing on the ejected fiber using a voltage of 50-80 KV, and airlaying or machine laying to produce the highly effective, low resistant fiber composite filtering material. The highly effective, low resistant fiber composite filtering material obtained by using said method has a filtering rate greater than or equal to 99.97% and a resistance less than or equal to 38 Pa.

QU EDWARD (CN)

PCT/CN2015/076703

October 22, 2015

April 16, 2015

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SHENZHEN CHINA TEXTILE FILTERS CO LTD (CN)

D04H1/4382; B01D39/14; D04H1/541; D06M10/02

WO2012012735A2

2012-01-26

CN103952859A	2014-07-30
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CN101238166A	2008-08-06
CN102242419A	2011-11-16
JPH09119050A	1997-05-06

REN, FENG ET AL.: "Investigation and Application of Material Used to Filtrate Pathogen", CHEMICAL WORLD, 28 February 2007 (2007-02-28), pages 121 - 122, XP055232183

NOZO & ASSOCIATES (CN)
深圳市诺正专利商标代理事务所(普通合伙) (CN)

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