Browsing OSU - International Conference on Web Handling by Title

Now showing items 16-35 of 429

    • Air entrapment and residual stresses in rolls wound with a rider roll 

      Good, J. K.; Covell, S. M. (Oklahoma State University, 1995-06)
      Air is entrained during the process of winding webs. Rider rolls are often employed in an effort to reduce the amount of air which enters the wound roll. This paper presents the results of an experiment which allows the ...

    • Air films between a moving tensioned web and a stationary support cylinder 

      King, S. L.; Funk, B. A.; Chambers, F. W. (Oklahoma State University, 1993-06)
      Web quality and web processing efficiency depend upon maintaining a proper lubricating air film between the moving web and the driving and supporting rollers. As web line speeds are increased, the film can become too thick, ...

    • Air support conveyance of uniform and non-uniform webs 

      Swanson, Ronald P. (Oklahoma State University, 1993-06)
      A web span model and solution technique have been developed to determine the stresses and deflections of uniform and non-uniform webs, subject to side loading from an air support system. Formulas are given to calculate the ...

    • Analysis of the kinematic and dynamic process during winding based on a systematology of models for winding mechanics 

      Welp, E. G.; Guldenburg, B. (Oklahoma State University, 1997-06)
      The winding process of web materials with low bending resistance is composed of several partial processes whose single effects are influenced by specific machine, process and material parameters. The interaction of these ...

    • Analysis of trough formation and lateral steering of a web due to a tapered downstream roller 

      Beisel, J. A.; Good, J. K. (Oklahoma State University, 2005-06)
      Cylindrical rollers are never perfectly cylindrical. A common defect of a cylindrical roller is radial taper. A roller with a radial taper will induce a lateral shear force into the web. This shear force will cause a ...

    • Analysis of web spreading induced by the concave roller 

      Delahoussaye, R. D.; Good, J. K. (Oklahoma State University, 1993-06)
      This paper describes the development of a model for predicting the elastic deformations and stresses in a web crossing a concave (or negative crown) roller. The Finite Element Method was used to compute web displacements, ...

    • Analysis of web spreading induced by the curved axis roller 

      Delahoussaye, R. D.; Good, J. K. (Oklahoma State University, 1993-06)
      This paper describes the development of a model for predicting the elastic deformations and stresses in a web crossing a curved-axis roller. The Finite Element Method was used to compute web displacements, forces and ...

    • Analysis of web wrinkling in accumulators 

      Kandadai, B. K.; Michal, N. J.; Patil, A. (Oklahoma State University, 2011-06)
      Accumulators provide a large amount of web storage in a small space. They are used to allow start/stop events like an unwind splice or a transfer to a new roll on a winder. It is common to see a loss of productivity due ...

    • Application of dimensional analysis to roll-to-roll manufacturing systems 

      Raul, Pramod R.; Pagilla, Prabhakar R. (Oklahoma State University, 2013-06)
      In this paper, we investigate the application of dimensional analysis for R2R systems. First, dimensional form of governing equations for web tension and speed are transformed to non-dimensional form using dimensional ...

    • Applying hundreds of years of scientific and engineering knowledge in 50 years of time 

      Shelton, J. J. (Oklahoma State University, 2007-06)
      Aspects of lateral behavior discussed in this paper include (1) the concept of a web span as a tensioned beam, analyzed for large ratios of L/W, small ratios, and general ratios, and (2) static interaction of two spans and ...

    • Aspects of two drum winding 

      Olsen, J. E.; Irgens, F. (Oklahoma State University, 1997-06)
      Two drum winding is not yet described by any model due to the lacking expression for the so-called wound-in-tension. Through dynamic analysis equations for winding velocity and first-drum-tension, which is related to ...

    • Assessing wound roll quality using a measured stiffness/model method 

      Markum, Ron E.; Good, J. K. (Oklahoma State University, 2019-06)
      For those concerned with roll quality it is difficult to suppress the urge to compress the outer surface of a wound roll with your thumb to sense how tightly the roll was wound and how large the internal pressures might ...

    • Auto taper tension profile maker in a converting machine 

      Lee, C. W.; Lee, J. W.; Shin, K. H.; Kwon, S. O. (Oklahoma State University, 2007-06)
      Winding is an integral operation in almost every web handling processes. Center-wounding are suitable and a general scheme in winding systems. However, the internal stresses within center-wound rolls can cause damage such ...

    • Axisymmetric nonlinear transient thermo-elastic winding model 

      Mollamahmutoglu, C.; Good, J. K. (Oklahoma State University, 2015-06)
      Temperature is among the most important environmental factors which play a crucial role on the mechanical state of wound rolls of web material. Existing literature include studies concerning the thermal characterization ...

    • Axisymmetric wound roll models 

      Mollamahmutoglu, C.; Good, J. K. (Oklahoma State University, 2009-06)
      Axisymmetric wound roll models provide the greatest definition of wound roll internal stresses to date. Simple one dimensional models can provide the user with radial profiles of pressure and circumferential stress as a ...

    • Bagginess and baggy streaks: A novel measurement technique to quantify tension profile of a web in cross-direction at high resolution 

      Parent, F.; Hamel, J. (Oklahoma State University, 2011-06)
      A tension beam was designed to quantify cross-directional tension profile of a moving web at high resolution and high accuracy. The beam, composed of 50 individual Teflon pads resting on load cells, allows the measurement ...

    • Behavior of a flexible web in contact with a roller 

      Jones, Dilwyn P. (Oklahoma State University, 2013-06)
      In the contact patch between a web and a roller, there may be regions of stick and microslip or full slip. Within the stick zone, the velocities of web and roller surface match, but in the microslip zone they differ by a ...

    • Behavior of a thin flexible twisted web 

      Brown, Jerry L. (Oklahoma State University, 2007-06)
      In an earlier IWEB paper, "A New Method for Analyzing the Deformation and Lateral Translation of a Moving Web" [5], a nonlinear PDE model, suitable for use with low-cost FEA software, was developed. That work considered ...

    • Behavior of webs transiting crowned rollers 

      Vaijapurkar, S.; Beisel, J. A.; Good, J. K. (Oklahoma State University, 2013-06)
      Crowned rollers are known to center running belts by observation. Crown can be an unintentional artifact of rollers whose surfaces are machined on lathes while supported at their ends. The bending stiffness of the rotating ...

    • Belated appreciation of Lisa Sievers' thesis 

      Brown, Jerry L. (Oklahoma State University, 2015-06)
      In her 1987 thesis [1] and a follow-up paper in the IEEE Transactions of Automatic Control [2], Lisa Sievers described three dynamic multi-span models for lateral web behavior.