Warping Parameters Influence on Warp Yarns Properties: Part 1: Warping Speed and Warp Yarn Tension

Abstract

Breaking strength of yarn is the most important physical property of yarn as it represents the main parameter for physical quality control. Breaking strength of yarn depends on many different factors, namely strength of fiber, length of fiber, micronaire, and uniformity [3].The yarn speed should be kept as constant as possible during warping. In indirect warping a constant speed drive is generally sufficient to provide fairly uniform yarn speed, for some filament yarns variable speed drive is chosen since friction drive would cause problems [1]. Warp yarn tensionA creel for supplying yarns from a plurality of respective packages to a take-up machine, such as a warp winder, has a support defining respective supply stations carrying the yarn packages, respective tension-sensing deflectors at the stations, and guides for directing the yarns from the respective packages over the respective braking surfaces and around the respective deflectors [4]. AbstractWarping is aimed at preparing the weaver's beam to be set up on the weaving machine. In warping, the yarns are taken from the spools placed on the creel and are wound around the warp beam or roll as per the calculated width of the fabric, an uninterrupted length of hundreds of warp yarns results, all oriented parallel to one another.This paper reports a study on producing (27) yarn samples by an indirect warping machine (Benninger, Ben-Ergotronic). Samples of yarns were manufactured from continuous raw polyester filaments with three yarn counts (70,150,300 denier) under three applied tensions of (0.15, 0.22, 0.29 cN/dtex). In addition, three warping speeds (200,400,600 m/min) were used. Tensile strength and elongation at break were measured.The results of measurements of warp yarn count under study for tensile strength and the elongation under the application of the set tension and warping speeds showed optimum tensile strength at warping speed of 400m/min, under a tension of (0.22) cN/dtex. In addition, the optimum elongation percentage was at warping speed of 200m/ min, under a tension of (0.22) cN/dtex for the (70) denier yarns. For (150) and (300) denier yarns, the optimum tensile strength and elongation percentage were at warping speed of 600m/min, under a tension of (0.29) cN/dtex. Volume 3 • Issue 2 • 1000132 J Textile Sci Eng ISSN: 2165-8064 JTESE, an open access journal Volume 3 • Issue 2 • 1000132 J Textile Sci Eng ISSN: 2165-8064 JTESE, an open access journal 70 denier yarns Optimum tensile strength was at warping speed of 400 m/min, under tension of 0.22 cN/dtex Optimum elongation percentage was at warping speed of 200 m/ min, under tension of 0.22 cN/dtex 150 and 300 denier yarns Optimum tensile strength was at warping speed of 600 m/min, under tension of 0.29 cN/dtex Optimum elongation percentage was at warping speed of 600 m/ min, under tension of 0.29 cN/dtex

Cloud-Based Analytics Module for Predictive Maintenance of the Textile Manufacturing Process

“…On a factory production line, different equipment is used for different processes, and equipment settings differ as per process specifics. Speed is an important factor in the warping process [5], and tension is important in the weaving process [6]. In beaming, the focus is on material density settings.…”

“…Mean-squared error MSE is used to estimate errors by calculating the difference between the predicted and actual values. Equation (5) shows the formula for MSE. The value is the average squared error between the expected and actual values.…”

Experimental Investigation of the Performance of a Feedback Tension Control System Designed for Warping Machines

“…After evaluating the results, they recommended to use a tension controlled warping creel for a good quality and homogeneous warp preparation. Dorgham investigated experimentally the effect of warping speed and warp tension on warp yarn properties like breaking strength and breaking elongation [5]. Warps were prepared from polyester filaments with three yarn numbers (70, 150, 300 denier) and each with three applied tensions (0.15, 0.22, 0.29 cN/dtex) at 200, 400, 600 m/min warping speeds.…”

“…In addition, the optimum elongation percentage was obtained at warping speed of 200 m/min, under a tension of 0.22 cN/dtex for 70 denier yarns. For 150 and 300 denier yarns, the optimum tensile strength and elongation percentage were measured at warping speed of 600 m/min under a tension of 0.29 cN/dtex [5]. Beerli and Guntli explained an apparatus and a method to control yarn tension in the creel of a sectional warping machine.…”