Patent ID: 7802418
Filing Date: 2010-09-28
Classification: D02G

Abstract:
1. A method for producing a yarn, resulting from assembly by twisting, cabling or covering of a plurality of basic yarns, comprising: subjecting at least one yarn of a plurality of basic yarns to a prior transformation; at least one yarn of the plurality of basic yarns being different from another yarn of the plurality of basic yarns and/or undergoing a first transformation different from the prior transformation; the prior transformation being carried out in parallel in the same machine by independent transformation means equipped with control means and being individually adjustable; carrying out on feeding devices a reduction in tension of each yarn of the plurality of basic yarns at an assembly point relative to an amount of tension resulting from the prior transformation, is; the yarns routed by guide means to the assembly point where the yarns are assembled and arranged in parallel; a bobbin receiving the assembled yarns in a device having, or being associated with, positive feeding means operating without slippage with respect to the yarn, and configured to control speed of movement of the assembled yarns; and placing the bobbin with the assembled yarns on a spindle of a twisting machine and the bobbin receiving a second two-for-one twisting, cabling or covering treatment, in which the assembled yarns are joined together by twisting the assembled yarns on themselves, by winding the assembled yarns around another yarn, or by winding another yarn around the assembled yarns.