The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2024
Filed:
Dec. 02, 2019
Korea Institute of Industrial Technology, Cheonan-si, KR;
Wan Gyu Hahm, Cheonan-si, KR;
Byeong Jin Yeang, Hwaseong-si, KR;
Young Chan Choi, Ansan-si, KR;
Hyun Ju Oh, Yongin-si, KR;
KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, Chungcheongnam-Do, KR;
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 through a spinning nozzle including at least one nozzle hole are collected by high-speed air stream, 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 provided directly under the spinning nozzle during spinning, so that the method can lower the melt flow index and spinline 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.