DEVICE AND METHOD TO ELIMINATE FLUFF FROM A YARN

摘要

The method to eliminate fluff from a yarn (11) comprises a first step in which the yarn (11) is made to transit in a processing zone (15) of a singeing machine (12) in which a source of high intensity energy (14) is positioned in order to carry out a first pass of removing the fluff. The method comprises a second step in which the yarn (1 1), exiting from said processing zone (15), is picked up again and diverted in order to be made to transit substantially continuously at least a second time inside the processing zone (15), in proximity to the source of energy (14), in order to carry out a second pass of removing the fluff. The second pass occurs in a direction concordant with the first pass. A control and adjustment is provided of the tension of the yarn (11) in at least one point of the diversion, guide and return path, between the first pass (F1) and the second pass (F2).