Title:
HIGH-DUST-HOLDING CAPACITY AND ELECTROSTATIC DISSIPATION GLASS FIBER FILTER MATERIAL, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/116973
Kind Code:
A1
Abstract:
A high-dust-holding capacity and electrostatic dissipation glass fiber filter material, comprising an upper surface layer (1), a middle layer (2) and a lower surface layer (3), wherein the upper surface layer (1) is a large-aperture layer having a thickness of 0.2-0.3 mm and an average aperture of 18-50 μm; the middle layer (2) is a pyroelectric fiber layer having a thickness of 0.1-0.2 mm and an average aperture of 8-20 μm; the lower surface layer (3) is a small-aperture layer having a thickness of 0.1-0.2 mm and an average aperture of 1-9 μm; and the upper surface layer (1), the middle layer (2) and the lower surface layer (3) are formed by respectively slurrying each layer of fibers followed by slurry distribution through a three-layer headbox, dehydrating, and drying. The glass fiber filter material, which has a three-layer gradient aperture structure, has a high dust holding capacity and is resistant to layering, and charged particles passing through the pyroelectric fiber layer are not charged or carry extremely few charges under the action of pyroelectric fibers, so that the generation of static electricity in an electronic product production workshop is reduced.
Inventors:
WANG YING (CN)
GAO ZHENG (CN)
GUO XIAOBEI (CN)
XIANG CHAOWEI (CN)
CHEN XIAOYAN (CN)
HU XIAOXIA (CN)
ZHANG JIAN (CN)
DAI FENG (CN)
ZHANG HANYANG (CN)
GAO ZHENG (CN)
GUO XIAOBEI (CN)
XIANG CHAOWEI (CN)
CHEN XIAOYAN (CN)
HU XIAOXIA (CN)
ZHANG JIAN (CN)
DAI FENG (CN)
ZHANG HANYANG (CN)
Application Number:
PCT/CN2021/134516
Publication Date:
June 09, 2022
Filing Date:
November 30, 2021
Export Citation:
Assignee:
NANJING FIBERGLASS RES & DESIGN INSTITUTE CO LTD (CN)
SINOMA SCIENCE & TECH CO LTD (CN)
SINOMA SCIENCE & TECH CO LTD (CN)
International Classes:
B01D46/00; B01D46/50; D21H27/08
Foreign References:
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| CN205439451U | 2016-08-10 | |||
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| US20030082979A1 | 2003-05-01 |
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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