Abstract: An improved system for fabricating alternating S/Z cabled yarn, for alternating S/Z twisted yarn and for (whether or not alternately) applying a torsion to a yarn, in which critical air flow conditions are obtained at least at the outlet of the torsion chamber of the devices. A method for fabricating alternating S/Z cabled yarn, for alternating S/Z twisted yarn and for (whether or not alternately) applying a torsion to a yarn under critical air flow conditions at least at the outlet of the torsion chamber used in the method, and a product according to these methods.

Abstract: The current invention concerns an improved system and method for the manufacturing of alternating S/Z cabled yarn 16) or connected alternating S/Z twist plied yarns, in which tension decrease or increase is avoided by variable longitudinal contraction when twist plying or overtwisting yarns. This longitudinal contraction Is very difficult to predict and leads to tension in the yarns, which can affect the quality. This tension can also be reproduced in the installations. This invention tries to improve this by providing a tension compensator (24) that (partially) compensates the tensions and forces between different, subsequent forces for processing yarns.

Abstract: The current invention concerns an improved system and method for the manufacturing of alternating S/Z cabled yarn (16) or connected alternating S/Z twist plied yarns, in which tension decrease or increase is avoided by variable longitudinal contraction when twist plying or overtwisting yarns. This longitudinal contraction is very difficult to predict and leads to tension in the yarns, which can affect the quality. This tension can also be reproduced in the installations. This invention tries to improve this by providing a tension compensator (24) that (partially) compensates the tensions and forces between different, subsequent forces for processing yarns.

Abstract: The present invention relates to an improved system for fabricating alternating S/Z cabled yarn, for alternating S/Z twisted yarn and for (whether or not alternately) applying a torsion to a yarn, in which critical air flow conditions are obtained at least at the outlet (43) of the torsion chamber (41) of the devices. Moreover, the present invention relates to a method for fabricating alternating S/Z cabled yarn, for alternating S/Z twisted yarn and for (whether or not alternately) applying a torsion to a yarn under critical air flow conditions at least at the outlet of the torsion chamber used in the method, and a product according to these methods.