Nonwoven Webs Made from Multicomponent Filaments and Process for Forming Nonwoven Webs
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United States of America
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Jan 9, 2025
app pub date -
Dec 15, 2022
filing date -
Dec 15, 2022
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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.
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