PROCESS FOR THE SIMULTANEOUS STRETCH TEXTURING OF FILAMENT YARN

A process for the production of a textured endless yarn by the simultaneous false twisting and stretch texturing of an unstretched or incompletely stretched yarn of a high molecular weight, fibre-forming linear polymer, using at least two heating zones separated from each other in space between the delivery cylinder and the draw-off roller, in which process the yarn is delivered from the delivery cylinder to a first heating zone, heated in this heating zone without substantial mechanical stress at a low yarn tension to a yarn temperature above the glass temperature and thereafter, at a higher yarn tension built up between the first and second heating zone or in the first heating zone, it is stretched and simultaneously friction false-twisted and heat fixed between the delivery cylinder and the draw-off roller at a yarn temperature of below 160 DEG C.