Browsing OSU - International Conference on Web Handling by Title

Now showing items 21-40 of 429

    • 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.

    • Bobbin stresses generated by wire winding 

      Metzinger, Kurt; Attaway, Steve; Mello, Frank (Oklahoma State University, 1991-05)
      The prediction of bobbin stresses generated by wire winding is now possible by combining a finite element structural code and a rigid body motion code. In this combination of computer codes, the bobbin and the individual ...

    • BOPP film trends; Some technology implications 

      Howard, J. (Oklahoma State University, 2001-06)
      Biaxially oriented polypropylene (BOPP) is an extremely versatile film that has demonstrated enormous growth in commercial usage over the approximately 40 years since its first introduction. A combination of material, web ...

    • Boundary conditions for lateral deformation of webs transiting rollers in roll-to-roll process machines 

      Good, J. K.; Ren, Yao; Shi, Jinxin (Oklahoma State University, 2017-06)
      The lateral deformations of webs in roll-to-roll (R2R) process machines can affect the quality of the manufacturing process. The lateral registration of the web in successive R2R processes can determine whether a product ...

    • Buckling of orthotropic webs in process machinery 

      Good, J. K.; Beisel, J. A. (Oklahoma State University, 2003-06)
      Many webs in web process machinery exhibit out-of-plane deformations, defined as troughs, in free web spans between rollers. In other cases when the troughs become severe the out-of-plane web deformations will begin to ...

    • Buckling of webs from lateral compressive forces 

      Shelton, J. J. (Oklahoma State University, 1993-06)
      Lateral compressive buckling of a web is often evident in troughs along a tensioned span and in corrugations in a wound roll or in the web wrapping a roller.