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Now showing items 401-410 of 429
Roll design effect on nip pressure
(Oklahoma State University, 2005-06)
The quality of reeling process is a key factor in achieving production efficiency, especially when machine speed and paper width continue to increase. For calendered and coated grades of paper the main problems are the ...
Strip tension control considering the thermal strain in multi-span systems with temperature change
(Oklahoma State University, 2001-06)
The mathematical model for tension behaviors of a moving web by Shin [1] is extended to the tension model considering the thermal strain due to temperature variation in furnace. The extended model includes the terms that ...
Calculation of film tension from film position and roller position
(Oklahoma State University, 2017-06)
The web tension as a crucial parameter for a web line is normally manually influenced by the speed of the motors driving the rollers. This paper shows that is better and easier to use the roller position derived from the ...
Measurement and control of the tension distribution across the web in a newspaper printing press
(Oklahoma State University, 1991-05)
A bending moment in a newsprint web caused by unevenly distributed tension across the web leads to disturbances in the production. Measurements in a printing press during newspaper production showed large variations in the ...
Propagation of longitudinal tension in a slender moving web
(Oklahoma State University, 1999-06)
To date, most of the theoretical work on longitudinal web behavior has been directed at the problem of controlling average tension. Very little attention has been given to the subject of this paper - propagation of tension ...
2D FSI model for paper webs and fabrics moving close to each other in complex geometries
(Oklahoma State University, 2009-06)
In the present article we develop a two-dimensional computational fluid-structure interaction (FSI) model for small transverse deflections of a moving paper web, supported on one side by a fabric, both moving in an arbitrary ...
Web handling technologies, past, present and future
(Oklahoma State University, 2001-06)
This paper gives a brief description of the evolution of technical knowledge. The evolution of beam theory is given as an example from the field of strength of materials. Technical knowledge starts with information gained ...
Controlling static on an unwinding roll
(Oklahoma State University, 2011-06)
Excessive static charges on insulating webs are the root cause for a number of problems in roll-to-roll manufacturing operations. Static charges attract contaminants and cause discharges that can ignite flammable vapors, ...
Nonlinear model to calculate the stressed state of a center-wound roll
(Oklahoma State University, 1995-06)
This work develops a model to calculate the stressed state of center-wound rolled webs, such as film, paper, or foil. The model is built on a lesser known linear model developed by Umanskii and accounts for the nonlinear ...
Surface compression of wound rolls
(Oklahoma State University, 2013-06)
Stress levels and profiles in the vicinity of contact between a wound roll and a nip or a rigid surface are important for the quality of the product during manufacturing or storage stages. Excessive or insufficient pressure ...