Browsing Proceedings of the International Conference on Web Handling by Author "International Conference on Web Handling (1999)"

Now showing items 1-20 of 38

    • 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 ...

    • 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 ...

    • 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, ...

    • 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 ...

    • Contact mechanical approach to the winding nip 

      Jorkama, M.; von Hertzen, R. (Oklahoma State University, 1999-06)
      A contact mechanical model for the winding nip, consisting of the wound roll, winding drum and the intervening sheet, is presented. The roll and drum are modeled as linear, orthotropic, homogeneous cylinders with a rigid ...

    • Dynamic model for monitoring and control of a winding process 

      Kabore, P.; Wang, H.; Jaafar, H.; Hamad, W. (Oklahoma State University, 1999-06)
      In this paper, a dynamical model for an on-line monitoring and control strategy design is proposed. It describes the dynamic behaviour of in-roll stresses as the roll is being built. The distribution of in-roll stresses ...

    • Dynamics of a web accumulator 

      Shelton, J. J. (Oklahoma State University, 1999-06)
      A conventional accumulator with no driven rollers and all rollers identical is studied for avoidance of excessive tension, slackness and slippage on the rollers. The total force imposed by the web spans on the carriage is ...

    • Engineering paper tubes to improve winding performance of various materials 

      Gerhardt, T. D.; Qui, Y. P.; Johnson, C. G.; Rhodes, D. E. (Oklahoma State University, 1999-06)
      Over the past 10 years, Sonoco has conducted fundamental, solid mechanics research concerning structural behavior of spirally wound paper tubes. The scope of this program has included experimental, numerical, and analytical ...

    • Estimating modulus of elasticity, torque loss, and tension using an Extended Kalman Filter 

      Boulter, B. (Oklahoma State University, 1999-06)
      A set of sub-optimal Extended Kalman Filters (EKF's) are described. The filters are used to estimate web tension, modulus of elasticity, and loss torque for all sections in a small web processing line located at Rockwell ...

    • Experimental and theoretical study of web traction over a nonvented roller 

      Rice, B. S.; Cole, K. A.; Muftu, S. (Oklahoma State University, 1999-06)
      The traction developed between a thin flexible web, wrapped around a nonvented, rotating cylindrical roller is studied experimentally and theoretically. A series of eight webs representing a wide range of surface roughness ...

    • Experimental study of idler roll slippage 

      Ries, J. P.; Farr, T. J. (Oklahoma State University, 1999-06)
      Idler roll slippage occurs when the roll surface velocity no longer equals the velocity of the web that transports the roll. In a web transport system, slippage will produce scratches in sensitive, coated web or cause ...

    • Factors that control run-ahead on printing presses 

      Hamel, J.; Menard, A.; McDonald, D. (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, ...

    • Fully nonlinear solution to the stresses inside wound rolls 

      Forrest, A. W., Jr. (Oklahoma State University, 1999-06)
      The Hakiel approach has been the accepted method for calculating stresses in wound rolls. It determines the stress in rolls by summing the stress induced by wraps of film applied to the roll surface. This approach is called ...

    • Improvement of web spacing characteristics by two types of guide rollers 

      Hashimoto, H. (Oklahoma State University, 1999-06)
      In the manufacturing fields of plastic sheet, paper, magnetic tape, thin metal plate, photographic film etc., the web transporting systems supported by guide rollers are often used. In such systems, it is of cardinal ...

    • Influence of web warpage on the lateral dynamics of webs 

      Benson, R. C. (Oklahoma State University, 1999-06)
      The transport of long flexible webs is of great importance in many manufacturing applications, including the processing of paper, textiles, magnetic tapes and photographic film. Beginning with the pioneering work of Shelton ...

    • Limitations to sensing of web tension by means of roller reaction forces 

      Shelton, J. J. (Oklahoma State University, 1999-06)
      Classical frequency response analysis of a dancer or a roller mounted on load cells reveals that such devices are severely limited in their ability to sense the dynamic tension in a web. The response of a tension control ...

    • Linear edge sensor 

      Haque, M.; Winter, D.; Hueppelsheuser, D.; Newton, J.; Storie, G. (Oklahoma State University, 1999-06)
      In modern industrial process controls, web guiding is becoming very demanding due to variations in web materials, variable web widths, and the need for better guiding accuracy. Selecting the appropriate sensor for various ...

    • Machine direction laminate curl control 

      Werner, P. (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 ...

    • Measurement and prediction of the centering effect of a profiled roll on steel strips 

      Onno, F.; Petit, J. C. (Oklahoma State University, 1999-06)
      In a steel continuous processing line, the strip passes over an important number of rolls and strip walking can occur due to strip defects, roll profile or roll misalignment. Since decades, two solutions are used in order ...

    • Mechanics of a cylindrical flexible web floating over an air-reverser 

      Muftu, S.; Cole, K. A. (Oklahoma State University, 1999-06)
      The mechanics of the fluid/structure interaction between a thin flexible web, wrapped around a cylindrical drum (reverser), and the air cushion formed by external pressurization through the holes of this drum is analyzed. ...