METHOD FOR MANUFACTURING HYDROPHILIC FIBER, AND METHOD FOR MANUFACTURING NONWOVEN FABRIC

WIPO Patent Application WO/2024/048630

A1

Provided are a method for manufacturing a hydrophilic fiber having excellent hydrophilicity retaining ability and a method for manufacturing a nonwoven fabric.　A step is performed for discharging a sheath material 11 that has a thermoplastic resin as a main raw material and a core material 12 that has a thermoplastic resin including a hydrophilizing agent as a main raw material each from a hole of a nozzle for composite spinning, and melt-spinning a core-sheath-type composite fiber 1, a hydrophilic fiber is manufactured with the hydrophilizing agent included in at least the core material 12 and the hydrophilizing agent included in a lower content ratio in the sheath material 11 than in the core material 12, as needed, and a nonwoven fabric is manufactured using the hydrophilic core-sheath composite fiber manufactured by the aforementioned method.

JPH08281102	METHOD FOR MANUFACTURING ABSORBENT COMPOSITE IN SANITARY PRODUCT, AND ABSORBENT COMPOSITE MANUFACTURED WITH THE METHOD
JPH0411017	HIGHLY HYGROSCOPIC CONDUCTIVE FIBER
JP3046509	ELECTRICALLY CONDUCTIVE CONJUGATE FIBER

KANEKO NAOKI (JP)
KUSAKA SATOSHI (JP)
ENDOU KOUKI (JP)
TANAKA NAOKI (JP)

PCT/JP2023/031420

March 07, 2024

August 30, 2023

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UBE EXSYMO CO LTD (JP)

D01D5/34; D01F8/04; D04H1/4382

JP2002146630A	2002-05-22
JPS51136924A	1976-11-26
JP2005350795A	2005-12-22
JPH05272006A	1993-10-19
JPH10325060A	1998-12-08

CIEL INTELLECTUAL PROPERTY LAW FIRM (JP)

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