Deformation of highly compressed wound rolls

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

Towards a general framework for including noise impacts in LCA

Industrial Ecolog

Effects of nip parameters on media transport

The mechanics of a web being transported through a set of elastomeric rollers has been investigated. Three general classes of roller materials are identified. These nip materials are then characterized by the speed at which they transport a web, and how that speed changes due to a number of design factors. The issue of media skew is also addressed, and examples are given of how different nip materials will or will not cause skew. Finally, design tradeoffs are discussed for the three classes of materials