Abstract
Web is produced by Roll-to-Roll system.In this system,web is supported by a number of rollers,perform consistently during various manufacturer,finally it is wound into a roll.Wound roll is the occurrence of defects such as slip and wrinkles caused by the winding conditions and environment temperature condition,and such defects make a reduction of the product quality of web.In addition,film thickness distribution occurs on the web in lamination process because a number of webs are generally laminated.These defects are dependent on the state of internal stress in wound roll,therefore it is necessary to prevent defect to certainly by understanding the stress state internal wound roll.In this study,a winding model for prediction of the internal stress,considering web thickness variation and temperature condition is presented and experimentally verified.As a result,measurements of internal stress are well accorded with the theoretical value.
