Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1996-02-28
1997-08-26
Edwards, Newton
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428374, D02G 300
Patent
active
056608047
ABSTRACT:
A highly oriented undrawn polyester fiber which is crystalline such that the fiber is capable of exhibiting a diffraction peak observable in a wide angle X-ray diffraction image of the fiber and has a birefringence of 0.015 to 0.05.
A process for preparing highly oriented undrawn core-sheath type conjugated polyester fibers including the step of spinning a polyester as the sheath polymer and a polymer having the larger gradient of elongational viscosity with the temperature than that of the sheath polymer at a spinning speed of about 4000 to 12000 m/min.
A textured yarn made of said highly oriented undrawn polyester fibers and a process for preparing the textured yarn.
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"Fiber Structure Formation in High-Speed Melt Spinning of Sheath-Core Type Bicomponent Fibers," Takeshi Kikutani et al, Sen-I Gakkaishi, vol. 51, pp. 408-415 (May 8, 1995).
Fukuhara Mototada
Kikutani Takeshi
Kishiro Akira
Ochi Takashi
Taniguchi Atsushi
Edwards Newton
Miller Austin R.
Toray Industries Inc.
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