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1. (WO2018139651) METHOD FOR PRODUCING UNCRIMPED SHORT FIBERS AND WET-LAID NONWOVEN FABRIC COMPRISING OBTAINED UNCRIMPED SHORT FIBERS

Pub. No.:    WO/2018/139651    International Application No.:    PCT/JP2018/002771
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Tue Jan 30 00:59:59 CET 2018
IPC: D06H 7/04
D01G 1/10
Applicants: TEIJIN FRONTIER CO., LTD.
帝人フロンティア株式会社
Inventors: BAN, Noritaka
伴 紀孝
GODA, Hironori
合田 裕憲
IMAI, Yasushi
今井 泰
NOMIYAMA, Chio
野見山 千緒
HANAWA, Shohei
塙 翔平
KATSUDA, Takeshi
勝田 健
Title: METHOD FOR PRODUCING UNCRIMPED SHORT FIBERS AND WET-LAID NONWOVEN FABRIC COMPRISING OBTAINED UNCRIMPED SHORT FIBERS
Abstract:
Provided is a method for producing uncrimped short fibers of excellent water dispersibility more efficiently. A method for producing uncrimped short fibers by spinning at a spinning rate of at least 600 m/min and cutting the fiber tow to lengths of not more than 35 mm at a rate equal to or greater than said spinning rate is characterized in satisfying the requirements (I)-(III): (I) the unstretched multifilament immediately after spinning is made into a fiber tow as such or bundling multiple strands; (II) said bundled fiber tow is cut continually without being placed in a can; and (III) the method has a step for applying hydrophilic oil at one or more points from the unstretched multifilament immediately after spinning until prior to fiber tow cutting.