FRICTION-CHARGING NONWOVEN FABRIC AND METHOD FOR MANUFACTURING SAME

WIPO Patent Application WO/2021/241367

A1

The problem to be solved by the present invention is providing a friction-charging nonwoven fabric in which two or more types of fibers having differing constituent resins are mixed, the nonwoven fabric being thin and having superior strength.　The present invention is a friction-charging nonwoven fabric in which two or more types of fibers having differing constituent resins are mixed, the thickness of the nonwoven fabric being 1.2 mm or less, and the maximum point strength being greater than 43.0 N/50 mm. Moreover, the present invention is a method for manufacturing a friction-charging nonwoven fabric in which two or more types of fibers having differing constituent resins are mixed, said method having: (1) a step for preparing a web in which two or more types of fibers having different constituent resins are mixed; (2) a step for performing a hydroentangling process on the web and formulating a hydroentangled web; and (3) a step for deforming the hydroentangled web in the thickness direction and applying, to the hydroentangled web that was deformed in the thickness direction, tensile force in a direction perpendicular to the thickness direction, whereby constituent fibers of the hydroentangled web are twisted together.

SHIRATAKE TAKUMA (JP)
TAKASHIMA YUICHIROU (JP)

PCT/JP2021/019046

December 02, 2021

May 19, 2021

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JAPAN VILENE CO LTD (JP)

D04H1/492; D04H1/4382; B01D39/16; B03C3/28

JP2008093501A	2008-04-24
JP2002220773A	2002-08-09

SAKAMOTO & PARTNERS (JP)

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