16-06-2015 дата публикации
Номер: KR1020150066094A
Принадлежит:
The present invention provides a method for manufacturing polyester flexible yarn with high flexibility. According to the present invention, in order to manufacture the flexible yarn with high flexibility, a copolymerized polyester-based polymer, which has high contractibility and high viscosity, and a common polyester-based polymer, which has low viscosity, instead of two kinds of polyester which are the same except intrinsic viscosity, are used, treated by a composite melt spinning process through a cross-type nozzle, and then are elongated. According to the present invention, the polyester flexible yarn is latent-crimping composite yarn, which consists of two kinds of polymers. When the polyester flexible yarn is manufactured, a copolymer, which is a polymer with high intrinsic viscosity of 0.6-0.85 and high contractibility, and a common polyester polymer with low intrinsic viscosity of 0.4-0.55 are used; and latent-crimping composite spinning filaments are compositely spun through the ...
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