Process for production of a composite textured yarn, woven or knitted fabrics made therefrom
AssigneeToray Industries, Inc.
InventorsKakuji Murakami, Tsugihiko Kai, Hideaki Kunisada
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Abstract
A composite textured yarn contains a component yarn A and a component yarn B each false twisted and crimped. The component yarn B is shorter in yarn length or larger in shrinkage at least after heat treatment. Single fibers of component B have thick portions and thin portions successively alternating in the longitudinal direction.
Claims5
A process for producing a composite yarn, which process comprises the step of bringing together at least two components yarns A and B and feeding to a false twister and thereby false twisting, where the component yarns A and B, when brought together, are at respective temperatures different from one another and component yarn B is heated to a temperature higher than the glass transition temperature while they are false twisted.
A process for producing a composite yarn, which process comprises the step of bringing together at least two component yarns A and B and feeding to a false twister and thereby false twisting, wherein the component yarns A and B when brought together are at respective temperatures different from one another and component yarn B is heated to a temperature higher than the glass transition temperature while they are false twisted, and wherein the component yarn B is composed of thermoplastic synthetic fibers selected from the group consisting of semi-drawn fibers and undrawn fibers.
Dependencies are inferred from the claim text.