A METHOD FOR MAKING SPUNBOND NONWOVEN FABRIC FROM MULTIPLE COMPONENT FILAMENTS

摘要

A method for preparing multiple component spunbond nonwoven fabrics in which the individual polymer components are extruded from separate orifices and contacted and fused after extrusion to form multiple component filaments that are drawn, quenched, and collected to form a spunbond web. The method is especially suitable for forming multiple component spunbond webs in which the different polymeric components have significantly different viscosities, for example in forming nonwoven webs comprising multiple component filaments having three-dimensional helical crimp.