Taper Tension Logic for Optimization of Residual Stresses in Roll-to-Roll Winding Systems

Title & Authors
Taper Tension Logic for Optimization of Residual Stresses in Roll-to-Roll Winding Systems
Lee, Jongsu; Lee, Changwoo;

Abstract
In a roll-to-roll continuous system, winding is one of the most important processes since it determines the quality of the final manufactured products such as flexible film and printed electronic devices. Since an adequate winding tension can reduce the incidence of the defects that are derived from the inner stress of the wound roll such as starring and telescoping, it is necessary to determine the optimal taper-tension profile. In this study, an algorithm for the setting of an optimal taper-tension profile in consideration of the residual stress in the wound roll is suggested; furthermore, the algorithm was adjusted for the determination of an optimal taper-tension profile regarding the winding process of $\small{10{\mu}m}$ polypropylene (PP) film. As a result of the algorithm-generated, optimal taper-tension profile, the residual stress and radial stress in a PP wound roll were decreased to 27.37 % and 40.05 % (mean value), respectively.
Keywords
Roll-to-Roll winding systems;Effective residual stress;Radial stress distribution;Taper tension profile;Taper value;
Language
Korean
Cited by
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