Simulation-based setting suggestions for yarn winding units to reduce color variation in knitted fabric

Textile Research Journal, vol. 93, pp. 2604–2619

Abstract

The finishing of yarns by bobbin dyeing is of key importance in the value chain of home and apparel textiles. In the bobbin dyeing process, yarn bobbins are placed on dye spindles and passed through with dye liquor. If the winding process parameters are selected unfavorably, the density of the winding package is inhomogeneous. The inhomogeneous density distribution leads to an inhomogeneous flow of dye liquid through the package and, hence, to dyeing defects. In order to minimize dyeing defects and to reduce set-up times, we present a simulation-based parameter recommendation for cross-winding machines in this paper. We use a kinematic model of the winding process combined with an empirical model for the package diameter to optimize the package density distribution. We introduce a criterion to avoid patterning defects and adapt winding settings. For bobbins with Nm 34 Co yarn, the homogeneity of the density was improved and the color deviation was reduced by up to 50% due to these simulation-based setting suggestions.

Authors 4

1. Andre Schmeißer corresponding

   Fraunhofer Institute for Industrial Mathematics

   Affiliation as printed

   Fraunhofer Institute for Industrial Mathematics ITWM, Transport Processes, Germany

2. Erik Gordon Bell Aachen Institut für Textiltechnik

   RWTH Aachen University

   Affiliation as printed

   Institut für Textiltechnik of RWTH, Aachen University, Germany

3. Simone Gramsch

   Fraunhofer Institute for Industrial Mathematics · Frankfurt University of Applied Sciences

   Affiliation as printed

   Frankfurt University of Applied Sciences, Computer Science and Engineering, Germany

   Fraunhofer Institute for Industrial Mathematics ITWM, Transport Processes, Germany

4. René Heidenreich

   Gesellschaft zur Förderung angewandter Informatik

   Affiliation as printed

   Gesellschaft zur Förderung angewandter Informatik eV, 3D-Datenverarbeitung, Germany