FILTER MEDIUM, METHOD FOR MANUFACTURING SAME AND FILTER UNIT COMPRISING SAME

WIPO Patent Application WO/2018/110965

A1

A filter medium is provided. The filter medium according to an embodiment of the present invention comprises: a first support body having a plurality of pores; a nanofiber web comprising nanofibers disposed on upper and lower sides of the first support body and forming a three dimensional network structure; and a second support body having a plurality of pores interposed between the first support body and the nanofiber web, wherein the nanofiber web is realized as a filter medium that satisfies: (1) an elongation of 25% or more, (2) an air permeability of 0.1 to 2.00 cfm, and 3) porosity of 60% ~ 85%. Accordingly, since the filter medium has a fixed level of mechanical properties of the nanofiber web, the shape, structure deformation, and damage of the filter medium are minimized and a flow path is smoothly secured during a water treatment operation so that the filter medium can have a high flow rate. In addition, since the filter medium of the present invention has a prolonged use life due to excellent durability of the filter medium even at high pressure applied during backwashing, and has excellent filtration efficiency and water permeability, the filter medium can be applied in various ways in various water treatment fields.

SEO IN YONG (KR)
JEONG UI YOUNG (KR)

PCT/KR2017/014621

June 21, 2018

December 13, 2017

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AMOGREENTECH CO LTD (KR)

B01D39/16; B01D63/08; B01D65/02; B01D65/08; B01D69/06; C02F1/44

KR20080060263A	2008-07-01
KR20150145735A	2015-12-30
US20040011721A1	2004-01-22
KR20160071760A	2016-06-22
KR20110049836A	2011-05-12

ERUUM & LEEON INTELLECTUAL PROPERTY LAW FIRM (KR)

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