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Patent Searching and Data


Title:
WATERPROOF VENTILATION SHEET AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/050128
Kind Code:
A1
Abstract:
The present invention relates to a waterproof ventilation sheet and a manufacturing method therefor, and the waterproof ventilation sheet comprises a nanomembrane, in which nanofibers are integrated in a non-woven fabric form including a plurality of pores, the waterproof ventilation sheet has a waterproof property against water pressure without leaking for 30 minutes or more under a water pressure of 1.5 m or more at a room temperature (20°C ± 5°C), and a sound transmission loss is less than 10 dB at 1000 Hz. The waterproof ventilation sheet controls a fine structure of a nanomembrane or orientation of a nanofiber so as to suppress absorption and diffused reflection of sound and to lower a sound absorption coefficient, improves waterproof, dustproof, and antifouling performance by forming a water repellent coating layer in the nanomembrane, resolves sound distortion by lowering a sound transmission loss measurement value, improves more a waterproof property by further including water repellent and oil repellent additives, and improves resistance to water pressure by improving the modulus of elasticity and strength of the nanomembrane and having great resistance to pressure strain caused by applied water pressure during resistance to water pressure.

Inventors:
BAEK JI-SUK (KR)
KIM SUNG-JIN (KR)
KIM CHUL-KI (KR)
OH HEUNG-RYUL (KR)
Application Number:
PCT/KR2018/005718
Publication Date:
March 14, 2019
Filing Date:
May 18, 2018
Export Citation:
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Assignee:
KOLON FASHION MAT INC (KR)
International Classes:
D04H1/728; D04H1/4318; D04H1/593; D04H13/00; D06M15/643
Foreign References:
KR20130129104A2013-11-27
KR101397063B12014-05-21
KR20120078329A2012-07-10
US20090176056A12009-07-09
KR20120110468A2012-10-10
KR101812787B12017-12-27
KR101815585B12018-01-05
KR101812788B12017-12-27
KR101812789B12017-12-27
Attorney, Agent or Firm:
CHEON JEE INTERNATIONAL PATENT & LAW FIRM (KR)
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