Browsing Proceedings of the International Conference on Web Handling by Title

Now showing items 348-367 of 429

    • Tension control of webs - A review of the problems and solutions in the present and future 

      Wolfermann, W. (Oklahoma State University, 1995-06)
      Production plants with continuous moving webs have a complex structure where mechanical and electrical problems are involved. To solve the problems of this systems, it is necessary to take into account the total system to ...

    • Tension control with and without tension sensors 

      Leonard, M. R. (Oklahoma State University, 1999-06)
      State feedback has become a widely used method of controlling dynamic systems such as moving webs. In a state controller the present value of all states (i.e. tension, motor speed, and motor torque for each web span) are ...

    • Tension disturbances in a turret winder 

      Klassen, Clarence (Oklahoma State University, 2019-06)
      Turret winders are designed to produce batches of rolls from a continuously moving web. Typically, two spindles are mounted on a turret, 180 degrees apart. The winding roll remains in the inside (winding) position until ...

    • Testing and analysis of web spreading and anti-wrinkle devices 

      Swanson, R. P. (Oklahoma State University, 1997-06)
      There are many web spreading and anti-wrinkle techniques and devices. A few have been analyzed, but most have not been tested with a uniform scientific method. Currently the decision of when and where to use such a device ...

    • Theoretical analysis of shear slitting of paper on the basis of a three-dimensional material law 

      Welp, E. G.; Wolf, E. (Oklahoma State University, 1999-06)
      The slitting and cross cutting as one of the substantial manufacturing methods in paper equipment and paper processing, are characterized in many applications by practice problems, which lead to productivity and quality losses.

    • Theoretical comparison of winding tension control methods 

      Ries, J. P. (Oklahoma State University, 1999-06)
      Several methods are used to control tension in the winding zone. The two most common methods use either a tension signal from a loadcell or a position signal from a dancer system. Both techniques control tension, however, ...

    • Theoretical modeling of traction characteristics between paper-web and steel-roller based on the contact mechanics 

      Hashimoto, H. (Oklahoma State University, 2005-06)
      This report describes the theoretical modeling of friction coefficient between uncoated paper web (newsprint; for example) and steel roller. In the modeling, the paper base is approximated by the linear spring and surface ...

    • Theory and application of draw control for elastic webs with nipped pull rollers 

      Spielbauer, Thomas M.; Walker, Timothy J. (Oklahoma State University, 1993-06)
      Draw control is defined as changing or maintaining web tension by controlling surface speeds of consecutive driven rollers. Even though draw control is commonly used in web handling applications, there remains some ...

    • Thermoelastic winding model with air entrainment 

      Lei, H.; Cole, K. A. (Oklahoma State University, 2001-06)
      Rolls of films are routinely stored under varying conditions before being unwound into downstream operations. During storage, interlayer pressures can change relative to the pressures generated during winding. These changes ...

    • Thin tape traction over a grooved roller 

      Kasikci, Tugce; Muftu, Sinan (Oklahoma State University, 2015-06)
      Traction between a thin, O(5 μm), tensioned tape and a grooved roller is studied. In the slow tape speed limit, tape contact over a grooved roller is studied analytically. A closed form relationship for the belt-wrap formula ...

    • Thinking thin? 

      Roisum, D. R. (Oklahoma State University, 2003-06)
      Markets drive us to ever thinner webs to reduce material costs and waste going to the landfill. The challenges for running a lighter basis weight or thinner caliper are at least as difficult for web handling as they are ...

    • Tin-canning defects in thin film winding 

      Walker, Timothy J.; Cole, Kevin (Oklahoma State University, 2015-06)

    • Traction force between rotating roll and moving web considering the effect of air-entrainment and friction 

      Sasaki, M.; Tanimoto, K.; Kohno, K.; Takahashi, S.; Suzuki, S. (Oklahoma State University, 2003-06)
      High-speed transportation of paper web sometimes leads the web handling system into unstable state because of increase in the air-entrainment into the gap between a rotating roll and moving web or the nip region of winding system.

    • Traction in web handling: A review 

      Jones, D. P. (Oklahoma State University, 2001-06)
      In web processes, at least one moving machine component must drive the material through a friction force at the interface. This force, or traction, inevitably falls as speed increases, and is accompanied by a degree of ...

    • Transient 2D paper web drying model based on CFD 

      Lehtinen, Antti; Bergstrom, Fredrik; Immonen, Eero; Nurmi, Simo; Martinsson, Lars; Ingvarsson, David; Juppi, Kari (Oklahoma State University, 2009-06)
      In the present article, a model combining the benefits of the small scale and large scale approaches towards modeling paper drying in a paper machine dryer section environment is described. The model is transient and ...

    • Twenty major developments in seven years - Thinking outside the box at the Beloit Downingtown Research Lab 

      Pfeiffer, J. D.; Lucas, R. G. (Oklahoma State University, 2005-06)
      The Bi-Wind and the Rho-Meter hardness tester are two well-known achievements of the Beloit Corporation's Downingtown Research Lab and there were many more in the period 1964 to 1971. A small group of researchers, building ...

    • Two-dimensional behavior of a thin web on a roller 

      Brown, Jerry (Oklahoma State University, 2009-06)
      A web on a roller is usually modeled as a one-dimensional belt in a state of pure circumferential stress. However, most of the important problems in lateral web behavior involve shear stress and cross web stress. Furthermore, ...

    • Two-dimensional behavior of a thin web on a roller 

      Brown, J. (Oklahoma State University, 2011-06)
      This paper presents a continuation of work described at the 2009 IWEB conference in a paper titled, "Two-dimensional Behavior of a Thin Web on a Roller" [1]. In that paper (which will be referred to as Part I), linear ...

    • Two-dimensional model to predict web-to-roller traction at small wrap angles 

      Rice, B. S.; Gans, R. F. (Oklahoma State University, 2003-06)
      We have studied the traction developed between a thin, flexible web and a rotating circumferentially grooved cylindrical roller. The traction model developed by Rice and Gans [1] is inadequate for small wrap angles, because ...

    • Two-drum winder run simulation model 

      Jorkama, M.; Von Hertzen, R. (Oklahoma State University, 1997-06)
      A dynamic, analytical model for winder run simulations is presented. The model consists of elastic drums, deformable paper rolls and a rigid rider roll beam. A paper roll nip flexibility model is derived and a profound ...