Twisted yarn and method of producing the same
AssigneeToray Industries, Inc.
InventorsTakashi Nakayama, Seiichi Yamagata, Koji Kajita
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Abstract
Disclosed herein is a twisted yarn comprising at least two bundled sheaves of staple fibers, each sheaf having an initial twist of substantially zero, the sheaves of staple fibers being mutually twisted to form the yarn. The coefficient of finishing twist utilization as defined in the specification is at least 150%. Also disclosed is a method of producing a twisted yarn comprising drafting a sheaf of staple fibers, supplying the sheaf to a bundling zone to reduce it to a bundled sheaf having an initial twist of substantially zero, drafting another sheaf in a similar manner, doubling at least two such bundled sheaves of staple fibers, and twisting them together.
Claims10
A twisted yarn comprising at least two bundled sheaves of staple fibers, each said sheaf having a core having an initial twist of substantially zero and having wrapping fibers wrapped around said core, said sheaves being twisted upon each other, and said twisted yarn product having a coefficient of finishing twist utilization greater than 150%, said coefficient of finishing twist utilization (RF) being defined by the formula, ##EQU4## where STy represets the strength of the twisted yarn and SUTy represents the strength of the yarn after detwisting the finishing twist of the yarn.
Dependencies are inferred from the claim text.