Title:
COMPOSITE MICROPOROUS FILTER MATERIAL
Document Type and Number:
WIPO Patent Application WO/2012/119291
Kind Code:
A1
Abstract:
Disclosed is a composite microporous filter material, which comprises a base cloth layer (2), an upper attaching layer (1) attached to the upper side of the base cloth layer (2) and a lower attaching layer (3) attached to the lower side of the base cloth layer (2), wherein the base cloth layer (2) is one of polyimide short fiber base cloth, polysulfonamide short fiber base cloth and polytetrafluoroethylene long thread base cloth; the upper attaching layer (1) is the mixture of polysulfonamide short fibers and polyimide short fibers; the lower attaching layer (3) is made of pure polysulfonamide short fibers; and the upper and lower attaching layers (1, 3) are laid on the two sides of the base cloth layer (2) and co-punctured to form the composite material. The co-puncturing is needle-puncturing process, spunlacing process or the combination thereof.
Inventors:
CAI WEILONG (CN)
LUO XIANGBO (CN)
LUO ZHANGSHENG (CN)
QIU GUOQIANG (CN)
LUO XIANGBO (CN)
LUO ZHANGSHENG (CN)
QIU GUOQIANG (CN)
Application Number:
PCT/CN2011/071516
Publication Date:
September 13, 2012
Filing Date:
March 04, 2011
Export Citation:
Assignee:
XIAMEN SAVINGS ENVIRONMENTAL CO LTD (CN)
CAI WEILONG (CN)
LUO XIANGBO (CN)
LUO ZHANGSHENG (CN)
QIU GUOQIANG (CN)
HONG LIMEI (CN)
CAI WEILONG (CN)
LUO XIANGBO (CN)
LUO ZHANGSHENG (CN)
QIU GUOQIANG (CN)
HONG LIMEI (CN)
International Classes:
B32B5/26; B01D39/16
Foreign References:
| CN102008854A | 2011-04-13 | |||
| CN201171942Y | 2008-12-31 | |||
| CN2912762Y | 2007-06-20 | |||
| CN201565203U | 2010-09-01 |
Other References:
XU, MINGZHU ET AL.: "Analysis of Heat-shrinkage Property for PSA High-temperature Needle Filtration Felt.", TECHNICAL TEXTILES., June 2010 (2010-06-01), pages 17 - 20
Attorney, Agent or Firm:
XIAMEN SHINHWA PATENT & TRADEMARK AGENCY CO., LTD. (CN)
厦门市新华专利商标代理有限公司 (CN)
厦门市新华专利商标代理有限公司 (CN)
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Claims: