Spun yarn-like textured composite yarn and a process for manufacturing the same
AssigneeTeijin Limited
InventorsYoshiyuki Sasaki, Masayuki Tani, Katsuyuki Kasaoka
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Abstract
Disclosed is a textured composite yarn composed of a first multifilament yarn having a lower extensibility and a second multifilament yarn having a higher extensibility, as well as a process for manufacturing such textured composite yarn. The first multifilament yarn forms a core yarn, while the second multifilament yarn is wrapped at least partially around the core yarn. Some individual filaments of the second multifilament yarn are entangled and interlaced with some filaments of the first multifilament yarn in the boundary region between the core yarn and the wrapping yarn.
Claims15
A process for manufacturing a spun yarn-like textured composite yarn comprising a step of subjecting a first bundle of partially oriented continuous filaments and a second bundle of undrawn continuous filaments both of which can be drawn at a draw ratio of at least 1.2 in an intermingled and interlaced state having at least 30 interlacing points per meter, to a draw-false twisting and crimping treatment carried out at a draw ratio of at least 1.2 and the breaking elongation of said first bundle of continuous filaments being different by at least 70% from the breaking elongation of said second bundle of continuous filaments.
Dependencies are inferred from the claim text.