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Now showing items 141-150 of 150
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 ...
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 ...
Deflection and critical velocity of rollers
(Oklahoma State University, 1995-06)
A coordinate system with its origin at the center of the roller, and with the origin moving as the roller deflects, is used for solution of the fourth order differential equation of beam mechanics. The result is a continuous ...
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, ...
Flutter mechanism of sheet
(Oklahoma State University, 1991-05)
Basic study has been conducted on sheet flutter which becomes an obstacle to the operation of printing machines and paper making machines in higher speed. Following three topics are presented in this paper.
Layer-to-layer slippage within paper rolls during winding
(Oklahoma State University, 1997-06)
Crepe wrinkles are created during reeling and winding of paper rolls against a rolling drum. These defects are associated with interlayer movement of paper within the body of the roll. To study this movement, rolls made ...
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, ...
Tenacity, fracture mechanics and unknown coater web breaks
(Oklahoma State University, 1995-06)
A web break model, based on fracture mechanics, was used to investigate unknown coater web breaks. Runnability was defined as Lb , the length between breaks. The model includes the size distribution of defects (holes and ...