Process for producing a highly oriented polyester undrawn yarn

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion

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264210F, D01D 512

Patent

active

040497631

ABSTRACT:
A process for producing a highly oriented polyester undrawn yarn comprising melt-spinning a polyester from a spinneret, solidifying the melt-spun yarn and taking up a solidified yarn at a take-up velocity from 2,500 to 4,500 m/min, wherein the spinning length is set within a specific range in accordance with the take-up velocity, yarn denier and maximum allowable tension of the yarn.

REFERENCES:
patent: 2604689 (1952-07-01), Hebeler
patent: 3771307 (1973-11-01), Petrille
patent: 3772872 (1973-11-01), Diazza et al.
patent: 3946100 (1976-03-01), Davis et al.
"On the Spin of Polycondensate Fibers at High Speed" by Griehl et al., Faserforschung und Textiltechnik, 9, 1958, pp. 226-231.

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