Deformation of highly compressed wound rolls

Abstract

This study concerns the loss of lap tension and interlayer pressure in a wound roll due to the compression of the web. Compression of the web thickness also affects the amount of material that may be wound into a roll of a given diameter. Stress predictions are made using a new, nonlinear wound roll model developed by the Mechanics of Flexible Structures Project at the University of Rochester. Comparison to experimental data available in the literature is excellent. We find that for some materials such as polyethylene terephthalate (PET) the effect of web compressibility is relatively insignificant. For other materials, like paper, the effect is important.