FILTER HAVING SUPER WATER-REPELLENT AND SUPER OIL-REPELLENT FUNCTIONS, AND APPARATUS FOR MANUFACTURING SAME

Title:

FILTER HAVING SUPER WATER-REPELLENT AND SUPER OIL-REPELLENT FUNCTIONS, AND APPARATUS FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2020/096249

Kind Code:

A1

Abstract:

The present invention relates to a filter having super water-repellent and super oil-repellent functions, and an apparatus for manufacturing same. The filter is characterized by the formation of: a glass fiber filter; a PTFE foam-coating layer obtained by foam coating, in a predetermined thickness, a PTFE foam-coating foaming solution on the surface of the glass fiber filter and drying same; a PTFE fiber layer obtained by electrospinning a solution, which contains PTFE and PVA, on the surface of the PTFE foam coating layer, so as to volatilize a PVA fiber, and attaching only a PTFE fiber thereto; and a PTFE powder layer obtained by spraying, through electrostatic spraying, the surface of the PTFE fiber-attached PTFE foam-coating layer, and then the curing of the PTFE foam-coating layer. The super water-repellent and super oil-repellent filter according to the present invention has excellent filter cleaning efficiency, and thus can be used as a filter for removing adhesive dust from industrial process exhaust gas.

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Inventors:

LEE MYONG HWA (KR)
KIM HAN BIN (KR)
KIM JIN SIK (KR)
LEE WOO JIN (KR)

Application Number:

PCT/KR2019/014251

Publication Date:

May 14, 2020

Filing Date:

October 28, 2019

Export Citation:

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Assignee:

KOREA INST IND TECH (KR)

International Classes:

B01D39/06

Foreign References:

KR101433774B1	2014-08-27
JPH11506987A	1999-06-22
KR20180083999A	2018-07-24
KR20160135022A	2016-11-24

Other References:

HUANG, YAN ET AL.: "Preparation, characterization, and applications of electrospun ultrafine fibrous PTFE porous membranes", JOURNAL OF MEMBRANE SCIENCE, vol. 523, 2017, pages 317 - 326, XP029823604, [retrieved on 20161013], DOI: 10.1016/j.memsci.2016.10.019

Attorney, Agent or Firm:

SON, Min (KR)

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