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Now showing items 21-30 of 153
Phenomens of rolling contact in paper calendering
(Oklahoma State University, 2009-06)
In soft calenders synthetic roll covers are "state of the art", without knowing their detailed rolling contact behavior and their phenomenological effects to gloss and smoothness of paper. Complex interactions of process ...
Vibration and stability of axially moving webs coupled to surrounding air
(Oklahoma State University, 2003-06)
High-speed web flutter is of significant importance in a variety of paper, plastics, textiles, and sheet metal industries. The natural frequencies of vibration and the onset of flutter in thin, wide, high-speed webs are ...
Interaction between two web spans because of a misaligned downstream roller
(Oklahoma State University, 2005-06)
Fourth order differential equations for two web spans are solved, with the required eight boundary conditions reflecting conditions at the upstream end of the first span, the downstream end of the second span (at the ...
Optimization of wind-up tension of webs preventing wrinkles and slippage with experimental verification
(Oklahoma State University, 2009-06)
This paper describes the optimization method of wind-up tension to prevent wound roll defects, mainly star defect (wrinkling) and telescope (slippage), based on the optimum design technique. Hakiel's nonlinear model with ...
Modeling rubber covered nip rollers in web lines
(Oklahoma State University, 2001-06)
Rubber covered nip rollers have a number of applications within web lines. Rubber covered rollers are often used to nip the web against a metal surfaced roller that is driven to achieve a certain web velocity or web tension. ...
Pseudo 3D viscoelastic winding model
(Oklahoma State University, 2007-06)
A pseudo 3D winding model that has considered orthotropic viscoelastic effects during winding and storage has been developed and implemented in a code revised from the 2D viscoelastic winding code developed by Qualls and ...
BOPP film trends; Some technology implications
(Oklahoma State University, 2001-06)
Biaxially oriented polypropylene (BOPP) is an extremely versatile film that has demonstrated enormous growth in commercial usage over the approximately 40 years since its first introduction. A combination of material, web ...
Simple model to predict web-to-roller traction
(Oklahoma State University, 2003-06)
We have studied the traction developed between a thin, flexible web and a rotating cylindrical roller. We present a new analytic model for high-wrap, circumferentially grooved rollers that couples air film pressure, web ...
Empirical investigation of weave versus web-to-roller traction in floating loop dryers
(Oklahoma State University, 2001-06)
Lateral control of a web using estimated velocity feedback
(Oklahoma State University, 2001-06)
The focus of this paper is on lateral control of a web using estimated motor velocity feedback. A reduced state velocity observer is designed to estimate the motor velocity based on the measured lateral position of the web ...