Continuous high speed spin-draw-texturing process for nylon yarn

Details Continuous high speed spin-draw-texturing process for nylon yarn Continuous high speed spin-draw-texturing process for nylon yarn

1985-12-24

1987-03-10

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

28245, 28246, 57287, 57290, 264168, 2642108, 2642907, 2641761, 425 66, D02G 102, D01D 516, D01D 522, D02J 122

Patent

active

046482407

ABSTRACT:
A continuous high speed spin-draw-false twist texturing process for producing a textured nylon yarn having high yarn uniformity is disclosed. The process comprises the steps of (a) melt-spinning a plurality of nylon filaments from nylon polymer; (b) cooling the filaments and combining them to form a yarn; (c) controlling the processing conditions of the nylon polymer of step (a) such that the relative viscosity of the yarn formed in step (b) is at least 45; (d) partially drawing the yarn at a draw ratio of from 2.3 to 3.5 and a temperature of at least 50.degree. C.; (e) simultaneously false twist texturing and further drawing the partially drawn yarn in a draw-false twist texturing zone at a draw ratio of from 1.1 to 1.5; and (f) withdrawing the textured nylon yarn at a speed of at least 1500 meters per minute. The process is particularly useful for the manufacture of textured nylon yarn having a linear density in the range of from about 10 dtex to about 50 dtex.

REFERENCES:
patent: 3719442 (1973-03-01), Schippers et al.
patent: 4081948 (1978-04-01), Parker
patent: 4103480 (1978-08-01), Rellensmann et al.
patent: 4149366 (1979-04-01), Bass et al.
patent: 4185450 (1980-01-01), Moruzzi et al.

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