Friction Control between Paper and Roller for Web Handling System

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This research aims to develop the theoretical prediction model for friction characteristics between transporting continuous paper and rotating roller based on the contact mechanics and to apply the model developed to the actual web handling system such as paper making machine and news printing machine with high production speeds.In 2003 and 2004, the contact model between paper and steel was constructed based on the observation results of paper surface topography, and then the theoretical prediction model of friction characteristics between paper web and steel roller was formulated successfully with experimental verifications. Moreover, the prediction model for web wrinkling under transportation due to roller skew and friction between web and roller was also presented.In 2005, extending the above theoretical model for predicting the onset of slippage between web and steel roller was formulated, and predicted results agreed well with experimental results.Based on these results, the new concept of web transportation system without generating defects was presented.