Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : March 06, 2023 - March 07, 2023
W A long, thin, continuous, flexible medium are commonly referred to as a web. Webs are often used as substrates in high-performance flexible devices. Roll-to-roll printed electronics production is expected to be the production method for these devices. However, there are still many problems. If the winding conditions are inappropriate, winding defects such as abrasions can occur. Slippage causes abrasion of the web, which damages the printed material. When the web is scratched, it loses its product value as well as other winding defects. In this study, the effects of winding speed and tension on the occurrence of slippage were investigated by varying the tension and speed in three steps. The modified Hakiel model proposed by Hashimoto et al. was used to compare the relationship between radial stress, interlayer air entrainment, interlayer frictional force and slip in the rolls with misalignment. As a result, it was confirmed that the amount of misalignment was the largest under the winding condition where the radial stress was the lowest. The amount of air entrainment increases under the condition of low internal stress. It is thought that the amount of misalignment increases because the frictional force between the web layers decreases.
