Process and an arrangement for false-twist spinning

An arrangement for false-twist spinning comprising:

• a drafting unit for drafting sliver,
• at least one false-twisting nozzle arranged downstream of the drafting unit for false-twisting sliver to form a yarn,
• a withdrawal device arranged downstream of the at least one false-twisting nozzle,
• and a guiding element which is arranged between the drafting unit and the false-twisting nozzle, said guiding element being driven to perform rotations around an axis disposed transversely with respect to the yarn travelling direction, said guiding element forming a deflection with a yarn guiding surface moving in the travelling direction of the yarn and configured to cause relative sliding movement of the yarn on the yarn guiding surface,
• wherein the guiding surface is driven at a speed which is higher than the delivery speed of the drafting unit and higher than the withdrawal speed of the withdrawal device such that yarn outer edge fibers are detached from central yarn core regions and are accelerated to a higher speed than the central yarn core regions.