公开(公告)号：US20250011988A1

公开(公告)日：2025-01-09

申请号：US18710055

申请日：2022-12-15

Applicant: Kimberly-Clark Worldwide, Inc.

Inventor： Jeffrey Krueger ,  Dean Arnold ,  Timothy D. Ferguson ,  Sara Honarbakhsh ,  Esfandiar Khatiblou ,  Eric E. Lennon

IPC: D04H1/56 ,  D01F1/04 ,  D01F1/10 ,  D01F6/06 ,  D04H1/4291 ,  D04H1/4382 ,  D04H3/007 ,  D04H3/16

Abstract: Multicomponent filaments, nonwoven webs made from the multicomponent filaments, and processes for forming nonwoven webs are disclosed. In accordance with the present invention, the multicomponent filaments contain a crimp enhancement additive. Specifically, the crimp enhancement additive is added to a polymeric component and increases the crystallization and/or solidification rate of that polymeric component. The use of the crimp enhancement additive in one of the polymeric components of the multicomponent filaments allows the multicomponent filaments to inherently crimp without the use of any post-crystallization/solidification heat treatment. The process produces webs with improved fabric density and softness properties. The crimp enhancement additive incorporated into the filaments is a polyolefin homopolymer, in particular a polypropylene homopolymer.