Title:
METHOD FOR MANUFACTURING AIR PURIFYING FILTER IMPREGNATED WITH CELLULOSE AND/OR POWDER ACTIVATED CARBON
Document Type and Number:
WIPO Patent Application WO/2018/216861
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing an air purifying filter using, as a support, a non-woven fabric formed of a synthetic fiber and having pores and, more specifically, to method for manufacturing an air purifying filter, the method comprising: a process for coating the non-woven fabric with a hydrophilic coating agent; and at least one of a cellulose impregnation process and a powder activated carbon impregnation process, wherein, in the cellulose impregnation process, a cellulose blended with water is filled in pores of the non-woven fabric and then is frozen and vacuum-dried, whereby the pores are impregnated with the cellulose and, in the powder activated carbon impregnation process, a powder activated carbon blended with a solution in which a binder is dissolved in a volatile hydrophilic organic solvent is filled in pores of the non-woven fabric and then is dried at a predetermined temperature, whereby the pores are impregnated with the powder activated carbon.
Inventors:
HUH SOON-YOUNG (KR)
Application Number:
PCT/KR2017/011934
Publication Date:
November 29, 2018
Filing Date:
October 26, 2017
Export Citation:
Assignee:
YOUNGSAN AEROWELL FILTER CO LTD (KR)
International Classes:
B01D39/16
Foreign References:
| KR20010050749A | 2001-06-15 | |||
| JPH10277332A | 1998-10-20 | |||
| KR101348657B1 | 2014-01-07 | |||
| KR101013395B1 | 2011-02-14 | |||
| JPH07328353A | 1995-12-19 |
Attorney, Agent or Firm:
Y.S.CHANG & ASSOCIATES et al. (KR)
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