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Now showing items 31-38 of 38
Modeling of edge rolls defects
(Oklahoma State University, 1999-06)
Based upon Hakiel's nonlinear orthotropic model for wound rolls, a model has been developed which takes into account widthwise variations in web properties. The model includes widthwise variations in the elastic modulus ...
On-line continuous measurement of rolls' coefficient of restitution
(Oklahoma State University, 1999-06)
This paper reports on the development of a novel technique to measure on-line rolls' coefficient of restitution or "springiness". The ratio of speed of separation to speed of approach in an elastic collision is termed the ...
New parameter for dynamic characterization of PET film surface topography
(Oklahoma State University, 1999-06)
It is well-known that handling and winding flexible media involve aerodynamic phenomena which are crucial for the process. Among those parameters which govern the final thickness value of the air layers separating the film ...
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 ...
Factors that control run-ahead on printing presses
(Oklahoma State University, 1999-06)
Run-ahead is a problem that occurs on printing presses where the paper rolls are braked by metallic bands applied to their periphery. Run-ahead occurs when the web in contact with the band decelerates faster than the roll, ...
Closed solid-state-fluid mechanical model for calculating the transferable torque on wrapped rolls
(Oklahoma State University, 1999-06)
Higher velocities of webs at the same or reduced web tension require basic improvement of the existing machine technique. Concerning the transferable torque between a web and a roll common work is restricted either to the ...
Machine direction laminate curl control
(Oklahoma State University, 1999-06)
Machine Direction Curl is a phenomenon that develops sometime after a finished laminate is allowed to relax. The root causes of this eventual curl are due primarily to the recovering of strain, in either or both Strips A ...
Compensation of disturbances in the web force caused by a non-circular running winder
(Oklahoma State University, 1999-06)
In many plants of the steel-, paper-, printing-, plastic- or textile industry the first section is an unwinder. But during storage and transport of the rolls, the rolls are often non-circular. If such a roll is unwinded, ...