Bayer Aktiengesellschaft

Harry Kubitzek

Wolfram Wagner

Karlheinz Feltgen

Herbert Pelousek

Michael Bueb

Wolfgang Rellensmann

Friedrich-Karl Rosendahl

Wolfgang Liedtke

Arthur Langhans

Georg Hinrichsen

Wolfgang Giessler

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.

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

The invention relates to a process for the simultaneous drawing and texturing of synthetic yarns by the false-twist method comprising interlacing the unstretched or partially stretched yarn by means of an interlacing device before entering the texturing zone of the texturing machine.

Process for texturing synthetic yarns

The invention relates to the production of yarns with individual filaments broken in a purely random sequence. This object is achieved by initially interlacing the uniform filament yarns either during spinning and before winding or between the winding bobbin and the drawing zone and subsequently subjecting parts of the outer layers of the interlaced filament strand to brief heat treatment on a contact heater before stretching.

Process for the production of filament yarns with statistically

The invention relates to a process for the continuous production of a stretched and interlaced polyamide-6 filament yarn wherein the filaments are interlaced before stretching.

Process for the production of polyamide-6 filament yarns

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Dormagen, Germany

Harry Kubitzek