Browsing OSU - International Conference on Web Handling by Title

Now showing items 240-259 of 429

    • Modeling wound rolls using explicit FE methods 

      Kandadai, B. K.; Good, J. K. (Oklahoma State University, 2007-06)
      A new method of wound roll analysis using an explicit finite element formulation is presented in this paper. The stresses developed in center wound rolls with and without an undriven nip roller are discussed and compared ...

    • Movement of layers and induced tension in the nip area between drum and paper layers 

      Hoffmann, Peter; Desch, Michael; Dorsam, Edgar (Oklahoma State University, 2011-06)
      During paper manufacture and processing production losses occur during winding of machine-wide paper rolls and finished rolls due to winding faults. During the winding process at least one drum (steel or rubber-covered) ...

    • Moving web instability caused by the bending deflection of the support idle roller 

      Ma, Li'e; Shao, Mingyue; Wu, Jimei; Liu, Shanhui; Liu, Dingqiang (Oklahoma State University, 2015-06)
      The moving web is transported through a lot of rollers in the roll to roll process machines. These rollers are usually driven rollers, dancer rollers and idle rollers. The number of the idle roller is the largest in the ...

    • Multi-stage tensile straining during drying of SC paper 

      Kouko, J.; Kekko, P. (Oklahoma State University, 2011-06)
      During multi-cylinder drying on a paper machine, the paper web is under stress in the machine direction, whereas the cross direction is more or less free. The web shrinks due to drying and contracts due to web draws. The ...

    • Multiple-tension control using a new approach in signal-processing 

      Krebs, S. (Oklahoma State University, 1997-06)
      A new tension control system is described, which allows the simultaneous control of up to four actuators, such as drives, brakes or clutches. It incorporates four speed/torque control modules and three tension control ...

    • Myth busters: Web handling and the power of modeling 

      Lynch, Ronald (Oklahoma State University, 2013-06)
      Web handling is filled with myths and folklore about things to do and not to do, about how to design web paths, and about how to handle specific situations. The folklore and myths are often industry specific and many web ...

    • New decentralized control in processing machines with continuous moving webs 

      Wolfermann, W.; Schroeder, D. (Oklahoma State University, 1993-06)
      Web-products are manufactured in sections of rollers which transport the web according to specific technological demands. To achieve the required final product, the transport of the web has to be successful without material ...

    • New governing equation for web tension by employing a Neo-Hookean material model 

      Gomez-Constante, A. R.; Pagilla, Prabhakar R.; Rajagopal, K. R. (Oklahoma State University, 2019-06)
      In this work, we derive a governing equation for web tension in a span by employing a Neo-Hookean material model that is applicable for transport of web materials under both small and large strains. This governing equation ...

    • New method for analyzing the deformation and lateral translation of a moving web 

      Brown, J. L. (Oklahoma State University, 2005-06)
      A new method is presented for modeling the elastic behavior of webs conveyed over rollers. In addition to producing detailed descriptions of stress fields, it provides a new way of looking at problems that will help web ...

    • New method for measurement of wound-in-tension in webs wound into rolls 

      Good, J. K.; Kandadai, B. K.; Markum, R. (Oklahoma State University, 2007-06)
      The Wound-In-Tension (WIT) is the tension in the outermost layer of a winding roll. The Wound-In-Tension is an important parameter that controls the stresses inside the wound roll which in turn determines the quality of ...

    • New model for the steady state deformation and friction of webs on rollers 

      Jones, Dilwyn P. (Oklahoma State University, 2017-06)
      A web moving through process machinery interacts with rollers through frictional forces, which may change its direction of motion and tension. By modelling the web as a beam, these forces can be calculated from its tension, ...

    • New objective method for quantitative assessment of cut edge quality for paper and board 

      Welp, E. G.; Wolf, E.; Heindl, J. (Oklahoma State University, 2001-06)
      In the paper converting and finishing industry the cut edge quality is of particular importance to the manufacturing processes, e.g. the printing process. In this paper an objective method for the quantitative evaluation ...

    • New parameter for dynamic characterization of PET film surface topography 

      Boutaous, M.; Bourgin, P. (Oklahoma State University, 1999-06)
      It is well-known that handling and winding flexible media involve aerodynamic phenomena which are crucial for the process. Among those parameters which govern the final thickness value of the air layers separating the film ...

    • Nip impinged center-winding including a nonlinear beam model 

      Mollamahmutoglu, C.; Good, J. K.; Markum, R.; Gale, J. W. (Oklahoma State University, 2017-06)
      Nip pressure is commonly applied in winding processes in order to maintain structural stability and prevent air entrainment at high speeds. In nip induced winding modeling nip and roll are assumed to be beams with ...

    • Nip mechanics of nano-impression lithography in roll-to-roll process machines 

      Ren, Yao; Good, J. K. (Oklahoma State University, 2017-06)
      Nano-Impression Lithography (NIL) has been demonstrated to produce nano features on webs that have value to society. Such demonstrations have largely been the result of NIL processes that involve the discrete stamping of ...

    • Non-interacting tension control in a multi-span web transport system 

      Shin, K. H.; Reid, K. N.; Kwon, S. O. (Oklahoma State University, 1995-06)
      A non-interacting tension control algorithm is proposed to reject the disturbance due to the interaction between neighboring processing sections. An 'auxiliary dynamic model' is derived. And an 'auxiliary controller' is ...

    • Non-linear tension control in a winding process by using the contact roll 

      Shin, K. H.; Kim, K. T.; Cheon, S. M. (Oklahoma State University, 1997-06)
      In a web winding process, the contact roll plays many important roles including air-entrainment control and WIT (Winound In Tension) regulation. The behavior of the contact roll significantly affects the winding tension ...

    • Nonlinear finite element model for web spreading 

      Stack, K.; Perconti, J.; Jeans, A.; LaFleche, J.; Benson, R. (Oklahoma State University, 1997-06)
      This study concerns the modification of a commercial finite element code (ABAQUS) to efficiently model webs moving over stationary, frictional guides. This modification will allow the user to refine the mesh in areas of ...

    • Nonlinear model to calculate the stressed state of a center-wound roll 

      Piper, C. A. (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 ...

    • Nonlinear orthotropic viscoelastic winding model 

      Qualls, W. R.; Good, J. K. (Oklahoma State University, 1995-06)
      A realistic and adaptive viscoelastic model for prediction of transient wound roll stress distributions is presented. The web material is taken to be orthotropic with a nonlinear radial creep compliance dependent upon ...