Title:
MEMBRANE FOR AIR DIFFUSER INCLUDING TWO KINDS OF RUBBER
Document Type and Number:
WIPO Patent Application WO/2022/005063
Kind Code:
A1
Abstract:
A membrane for an air diffuser according to the present invention has a multi-layered or single-layered structure including two rubber layers of different hardness, and thus can generate air microbubbles having a size of no greater than 1 mm, has an excellent oxygen transfer efficiency with which oxygen in the air is dissolved in wastewater, and improves the durability of a slit to prevent portions that are subjected to high air pressure from easily tearing, thus having the effect of delaying product replacement. In addition, punching of extremely tiny air holes is possible such that permanent compression set, which is a flaw of EPDM-based membranes, is significantly mitigated when the inflow of air is halted, and thus the membrane has the effect of preventing the backflow of wastewater into the membrane air diffuser.
Inventors:
CHOI WON YONG (KR)
CHOO JI HWA (KR)
CHOO JI HWA (KR)
Application Number:
PCT/KR2021/007640
Publication Date:
January 06, 2022
Filing Date:
June 17, 2021
Export Citation:
Assignee:
HYOKWANG TECH CO LTD (KR)
MIRAEGREENTECH CO LTD (KR)
MIRAEGREENTECH CO LTD (KR)
International Classes:
C02F3/20
Foreign References:
| KR101230058B1 | 2013-02-05 | |||
| KR101979318B1 | 2019-08-28 | |||
| KR102030476B1 | 2019-11-08 | |||
| EP2153883A1 | 2010-02-17 | |||
| KR20160021157A | 2016-02-24 | |||
| KR102216756B1 | 2021-02-17 |
Attorney, Agent or Firm:
HAEUM PATENT & LAW FIRM (KR)
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