SPUNBOND NONWOVEN FABRIC MANUFACTURING METHOD AND MANUFACTURING DEVICE

WIPO Patent Application WO/2017/038977

A1

This method for manufacturing a spunbond nonwoven fabric is a method in which a continuous fiber group discharged from a spinneret is thinned and drawn by a rectangular ejector and gathered into the form of a nonwoven fabric, wherein the method for manufacturing a spunbond nonwoven fabric is characterized in that: an ejection port portion of the rectangular ejector is provided with a pair of slit width restricting parts, which face each other in continuation in the long-side direction of the ejection port; at least one of the slit width restricting parts is a slit width restricting member comprising an integrated item continuous in the long-side direction of the ejection port; a plurality of minute deformation means for causing the slit width restricting member to minutely deform are disposed in the long-side direction of the slit width restricting member; the basis weight distribution in the width direction of the nonwoven fabric gathered in advance is measured; the slit width restricting member is caused by the minute deformation means to partially minutely deform on the basis of the resulting measurement value; and the slit width of the ejection port is partially varied by the minute deformation to adjust the basis weight distribution.

SHIMADA DAIKI (JP)
HANE RYOICHI (JP)
SHINWASHI HIROSHI (JP)
INOUE SHINJI (JP)

PCT/JP2016/075803

March 09, 2017

September 02, 2016

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TORAY INDUSTRIES (JP)

D04H1/736; D04H3/16

JPH09228223A	1997-09-02
JPS5259775A	1977-05-17
JPH07268720A	1995-10-17
JP2001207368A	2001-08-03
JPH1025650A	1998-01-27
JPH08226063A	1996-09-03

See also references of EP 3346037A4

EIKOH PATENT FIRM, P.C. (JP)

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