FEM解析および実験による高分子フィルム搬送時のトラフの評価

抄録

High-performance flexible products, such as thin-film solar cells, are conveyed and processed through rolls in roll-to-roll production systems. However, wavy defects known as troughs can occur during conveying, which prevent the uniform application of the coating and can lead to significant economic losses. Although Finite Element Method (FEM) simulations have been employed to predict the occurrence of these troughs, there have been few studies that compare the predictions with actual conveying conditions. In this study, FEM simulations were used to assess the behavior of polymer film during conveying, and image analysis of the troughs using stereo DIC (digital image correlation) was conducted under the same conditions to validate the simulations. The experimental results confirmed that troughs occur periodically, and it was also found that the FEM analysis predicted the same number of troughs observed in the experiments. Therefore, the validity of FEM analysis for predicting the occurrence of troughs was confirmed.