Crimped multicomponent filaments and spunbond webs made therefrom
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United States of America Patent
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Jun 25, 2002
Grant Date -
Aug 16, 2001
app pub date -
Sep 30, 1997
filing date -
Sep 30, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Spunbond multicomponent filaments and nonwoven webs made from the filaments are disclosed. In accordance with the present invention, the multicomponent filaments contain a crimp enhancement additive. Specifically, the crimp enhancement additive-is added to the polymeric component that has the slower solidification rate. The additive enhances crimp, allows for highly crimped filaments to be made at low fiber linear densities, improves the integrity of unbonded webs made from the filaments, and produces webs with improved stretch and cloth-like properties. The additive incorporated into the filaments is a random copolymer of butylene and propylene.
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