Title:
METHOD FOR MANUFACTURING MELT-SPUN NONWOVEN FABRIC AND MICROFIBER NONWOVEN WEB MANUFACTURED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2020/111910
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing a melt-spun nonwoven fabric and a microfiber nonwoven web manufactured therefrom. The present invention relates to a method for manufacturing a melt-spun nonwoven fabric, in which fibers obtained by melt-spinning a thermoplastic polymer though a spinning nozzle including at least one nozzle hole are collected by high-speed air flow, wherein the melt-spun fibers are subjected to momentary local heating at a high temperature higher than a spinning temperature while same are caused to pass through a nozzle local heating heater provided directly under the spinning nozzle during spinning, so that the method can lower the melt viscosity and radial elongation viscosity of a thermoplastic resin discharged from the nozzle hole without reducing a molecular weight, thereby providing a microfiber nonwoven web formed by finely thin fibers, compared to the conventional spun-bond nonwoven fabric.
More Like This:
| WO/2010/122806 | BIODEGRADABLE NONWOVEN FABRIC AND FIBER PRODUCT USING THE SAME |
| WO/2002/010497 | MELTBLOWN WEB |
| WO/1987/004195 | MELT BLOWING DIE AND AIR MANIFOLD FRAME ASSEMBLY |
Inventors:
HAHM WAN GYU (KR)
YEANG BYEONG JIN (KR)
CHOI YOUNG CHAN (KR)
OH HYUN JU (KR)
YEANG BYEONG JIN (KR)
CHOI YOUNG CHAN (KR)
OH HYUN JU (KR)
Application Number:
PCT/KR2019/016831
Publication Date:
June 04, 2020
Filing Date:
December 02, 2019
Export Citation:
Assignee:
KOREA INST IND TECH (KR)
International Classes:
D04H1/56; D04H1/4291
Foreign References:
| KR20170105746A | 2017-09-20 | |||
| KR101899421B1 | 2018-09-17 | |||
| JPH08269811A | 1996-10-15 | |||
| KR20050105672A | 2005-11-08 | |||
| KR100305387B1 | 2001-09-24 |
Attorney, Agent or Firm:
SEWON PATENT LAW FIRM (KR)
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