Process for the production of polyamide-6-filaments of the .gamm

Details Process for the production of polyamide-6-filaments of the .gamm Process for the production of polyamide-6-filaments of the .gamm

1976-03-10

1978-07-25

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

264136, 264210F, 264290N, D02G 120

Patent

active

041029658

ABSTRACT:
The invention is related to a process for the production of continuous polyamide-6-filaments present in the .gamma.-modification both before and after stretching at room temperature by spinning polyamide-6 with a relative solution viscosity of from 2.3 to 3.1, preferably from 2.6 to 2.85, as measured on a 1% solution in m-cresol, wherein the filaments (a) after leaving the spinneret, are cooled by air-blowing and preoriented up to an elongation at break of from 50 to 80%, preferably from 55 to 75%, by being run off, preferably in the absence of godets, at a speed of 3700 to 4500 m/min; (b) before winding into package form and during take-off, are prepared with an aqueous preparation oil in such a way that they contain less than 3.0% by weight of water, and (c) before winding into package form are subjected to interlacing.

REFERENCES:
patent: 3803282 (1974-04-01), Hamana et al.
patent: 3846532 (1974-09-01), Kubitzek et al.
patent: 3987136 (1976-10-01), Schippers
patent: 3994121 (1976-11-01), Adams

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