Patent ID: 6454989
Filing Date: 2002-09-24
Classification: D01D,D01F,D04H

Abstract:
A method of making a nonwoven web comprising:extruding continuous multicomponent fibers having a crimpable cross-sectional configuration, said multicomponent fibers comprising a first component and a second component wherein said first component comprises propylene polymer and said second component comprises a different propylene polymer selected from the group consisting of high melt-flow rate polypropylenes, low polydispersity polypropylenes, amorphous polypropylenes and elastomeric polypropylenes; quenching said continuous multicomponent fibers; melt-attenuating said continuous multicomponent fibers wherein said continuous multicomponent fibers spontaneously develop crimp upon release of the attenuating force; and depositing said continuous multicomponent fibers onto a forming surface to form a nonwoven web of helically crimped fibers.