Suitable traverse ratios for step precision winding

Abstract Step precision winding produces a yarn package that is free from ribbon formation and marginal variation in coil angle. In open step precision winding, traverse ratios used during package build are such that the resultant package is open suitable for end user applications like warping and dyeing. It is always a critical task for a manufacturer of step precision yarn winding system to find values of traverse ratios which are open and definitely ribbon free without any appearance of diamonds or honeycomb. Traverse ratios used in any commercial step precision yarn winding system are not accessible to the user. The authors have carried out basic work of finding suitable open wind traverse ratios for step precision winding and have come out with a novel approach of “SAFE ZONES” for finding suitable open traverse ratios. This paper discusses this novel approach that is very useful for manufacturers of step precision winding systems.