Manufacturing method and equipment for spunbonded non-woven fabric

摘要

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.