Browsing OSU - International Conference on Web Handling by Title

Now showing items 41-60 of 429

    • Calculating coilset based on curvature of a web 

      Comeau, R. (Oklahoma State University, 2003-06)
      A web which has passed over a roll can exhibit coilset due to differential yielding of fibers through its thickness. Modeling can provide a radius of curvature, R, the web would achieve if no external forces were applied. ...

    • Calculation of film tension from film position and roller position 

      Oedl, Gunter (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 ...

    • Cause and effects of tension in a draw-controlled web process line 

      Shelton, John J. (Oklahoma State University, 1991-05)
      There is a common belief, supported by several technical papers and bulletins, that the tension in a web increases with velocity by the addition of the term mV^2 to the tension in a stationary web. This concept of a tension ...

    • Century of web handling literature 

      Roisum, D. R. (Oklahoma State University, 2011-06)
      This paper is a review of some 3,500 published works in the areas of web handling, winding, converting and related subjects. These individual works include articles, books, columns, conference papers, instruction manuals, ...

    • Challenges and opportunities in flat panel industry 

      Fuchigami, S. (Oklahoma State University, 2005-06)
      The Flexible Panel Display (FPD) business is rapidly growing in Asia. Many industrial companies not only from traditional coating industries but from others such as electronics, printing, and film manufacturing industries, ...

    • Changes in web tension profiles and paper properties during repeated rewinding 

      Eriksson, L. G.; Hellentin, P.; Johnson, P. (Oklahoma State University, 1993-06)
      Newsprint rolls with a diameter of about 125 cm have been run six times through a rewinder. The changes in the CD web tension profile have been recorded during the rewindings. The roll hardness has been measured before and ...

    • Characterization of a slit edge using image analysis 

      Viswanathan, H.; Lu, H. (Oklahoma State University, 2003-06)
      The paper deals with the characterization of edge quality of a slit web. The conventional way of determining the edge quality of a slit web is usually through visual inspection, sometimes under an optical microscope. In ...

    • Closed solid-state-fluid mechanical model for calculating the transferable torque on wrapped rolls 

      Schuler, D.; Welp, E. G.; Kopp, O. (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 ...

    • Combined stresses for webs going over rollers 

      Roisum, David R. (Oklahoma State University, 2015-06)
      In research it is typical that only one source of stresses is studied at a time. In entry-level mechanics textbooks, you may see the occasional combined stresses taught where a couple of sources are superposed. Yet, seldom ...

    • Comparative study on active and passive dancers used for attenuation of web tension disturbances 

      Dwivedula, R. V.; Zhu, Y. L.; Pagilla, P. R. (Oklahoma State University, 2003-06)
      A dancer mechanism, used in most of the web process lines, consists of a roller which is either connected to a fixed support by passive elements such as springs and dampers or is force loaded in opposition to the web ...

    • Comparison of center and surface winding using the wound-in-tension method 

      Good, J. K.; Hartwig, J.; Markum, R. (Oklahoma State University, 1999-06)
      Pfeiffer first defined the wound-in-tension measurement in 1968[1]. This technique requires the outer layer of web to be pulled away from a winding roll and a measure of the web tension is made prior to returning the web ...

    • Comparison of control strategies for roll-to-roll printing presses 

      Seshadri, Aravind; Pagilla, Prabhakar R. (Oklahoma State University, 2013-06)
      Flexible printed electronics is touted to be a significant part of the future of the roll-to-roll (R2R) printing industry. Electronic devices, such as RFID tags, low-cost displays and lighting devices, polymer solar cells, ...

    • Comparison of multi-span lateral dynamics models 

      Brown, Jerry L. (Oklahoma State University, 2015-06)
      It's obvious that when a web changes its lateral position at a roller, subsequent spans will be affected. Less obvious, is the fact that transient stress variations will also affect downstream spans. Multi-span models are ...

    • Compensation of disturbances in the web force caused by a non-circular running winder 

      Wolfermann, W. (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, ...

    • Complete material law of paper for modelling and simulation of finishing processes 

      Welp, E. G.; Wolf, E.; Niebuhr, V. (Oklahoma State University, 2005-06)
      A complete three-dimensional material law is necessary for the mathematical description of the material behaviour and for the simulation and calculation of finishing or converting processes. In order to achieve this goal, ...

    • Compressive modulus measurement techniques 

      Pfeiffer, J. D. (Oklahoma State University, 1999-06)
      The compression testing of stacks of sheet materials is done to learn the behavior of the group of sheets, a behavior that is quite different from that of a solid, or even one single thick sheet of the same material. Many ...

    • Computation of span length variations due to out-of-round material rolls 

      Branca, C.; Pagilla, P. R.; Reid, K. N. (Oklahoma State University, 2009-06)
      It is well known that non-ideal elements such as out-of-round/eccentric material rolls affect web tension. However, the mechanism through which these non-ideal components induce tension oscillations was not clear previously. ...

    • Computations of air films and pressures between webs and rollers for steady and unsteady operating conditions 

      Kothari, S. S.; Satheesh, K.; Chambers, F. W. (Oklahoma State University, 1997-06)
      Numerical computations have been performed to predict the lubricating air film thickness and pressure for the entire region of smooth rotating support rollers wrapped by moving impermeable and permeable webs. Results have ...

    • Computer simulation of web dynamics 

      Fox, Scott J.; Lilley, David G. (Oklahoma State University, 1991-05)
      Explicit finite difference schemes for modeling one-dimensional, transient web dynamics are designed, developed and tested. A sequence of numerical experiments are performed to ascertain the effects of various parameters ...

    • Computing wound roll stresses based upon web surface characteristics 

      Good, J. K.; Xu, Y. (Oklahoma State University, 1993-06)
      Historically wound roll models have required the input of a radial modulus of elasticity. Heretofore this modulus has been measured using material testing systems which have shown the radial modulus to be dependent upon ...