PROCESS OF MAKING TEXTURED MULTICOMPONENT FIBERS
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United States of America Patent
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N/A
Issued Date -
Oct 10, 2019
app pub date -
Apr 2, 2019
filing date -
Apr 9, 2018
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A process for texturing a multicomponent fiber is provided. The process comprises: (A) providing a multicomponent fiber having a shaped cross section and at least one water dispersible polymer; and a plurality of domains comprising one or more water non-dispersible polymers, wherein said domains are substantially isolated from each other by said water dispersible polymer intervening between said domains; and wherein the water dispersible polymer is present at the perimeter of the outside cross-section of the multicomponent fiber in a proportion of no greater than 55% water dispersible polymer; and (B) passing the multicomponent fiber through a first zone comprising a first heating device and a twisting unit, wherein the first heating device has a heating temperature that is at least 10% less than the temperature used for a fiber without the water dispersible component having the same water non-dispersible polymer, same number of total filaments in the fiber, and the same total denier for a given type of equipment and process conditions.
First Claim
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