Prediction Model of Traction Based on Contact Mechanics Between Paper-web and Steel Roller (2nd Report, Traction Characteristics for Circumferentially Grooved Roller)

Abstract

This second paper describes the theoretical modeling of traction coefficient between uncoated paper web and circumferentially grooved steel roller. Extending the prediction model for smooth roller, which was formulated based on the contact mechanics between paper and steel in the first report, the new prediction model for grooved roller is obtained. To confirm the applicability of the model to the prediction of traction coefficient, the predicted results are compared with the measured data for smooth and two kinds of grooved rollers by changing roller velocity, web tension, wrap angle and width. The same test rig as used in the first report is used for the measurements. There are good agreements between the predicted results and measured data for a wide range of test conditions, and the applicability of the prediction model is verified experimentally.