Title:
MULTIFUNCTIONAL ELECTROSTATIC ELECTRET FILTER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/203494
Kind Code:
A1
Abstract:
A multifunctional electrostatic electret filter and a preparation method therefor. The filter is a sheet formed by interlacing a plurality of fibers (11). Each fiber (11) comprises a core portion (111) and a skin layer (112) which covers the surface of the core portion (111) and to which an additive is added. The fibers (11) are electrostatically charged to form a filter having electrostatic charges. The method comprises the following steps: S11: providing materials used for forming a core portion (111) and a skin layer (112), and adding an additive to the material to be formed into the skin layer (112); S12: making a fiber (11) out of the material used for forming the core portion (111) and the material to which the additive is added, the resulting fiber (11) comprising the core portion (111) and the skin layer (112) covering the surface of the core portion (111); and S13: making a plurality of fibers (11) into a skeet-like fiber web, and electrostatically charging the fiber web to form a filter.
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Inventors:
FAN SAN PIN (CN)
FAN LI CHIA (CN)
FAN LI CHIA (CN)
Application Number:
PCT/CN2020/087192
Publication Date:
October 14, 2021
Filing Date:
April 27, 2020
Export Citation:
Assignee:
LIHONOR PRODUCTS CO LTD (CN)
International Classes:
B01D39/14; B01D39/16; B01D39/20; B01D46/00; D04H1/4382; D04H1/541
Foreign References:
| CN105586714A | 2016-05-18 | |||
| CN110812947A | 2020-02-21 | |||
| CN106906526A | 2017-06-30 | |||
| CN110833724A | 2020-02-25 | |||
| CN105771427A | 2016-07-20 | |||
| CN103320880A | 2013-09-25 | |||
| US20130196405A1 | 2013-08-01 | |||
| JPH08134721A | 1996-05-28 |
Attorney, Agent or Firm:
SHANGHAI WEI YUAN PATENT LAW LLC (CN)
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