Browsing OSU - International Conference on Web Handling by Title

Now showing items 343-362 of 429

    • Taxonomy of web and winding defects 

      Roisum, David R. (Oklahoma State University, 2019-06)
      Constructing taxonomies can be useful for the researcher and troubleshooter alike. First, it gives us a precise language for conversation within our own plant or with our customers. This language helps us avoid using the ...

    • Taxonomy of wrinkles 

      Walker, Timothy J. (Oklahoma State University, 2009-06)
      Taxonomy is the practice and science of classification. Without taxonomy, everything is lumped into one pot and confusion prevails. All wrinkled or buckled webs should not be filed under one category. Just as birds are ...

    • Tenacity, fracture mechanics and unknown coater web breaks 

      Swinehart, D.; Broek, D. (Oklahoma State University, 1995-06)
      A web break model, based on fracture mechanics, was used to investigate unknown coater web breaks. Runnability was defined as Lb , the length between breaks. The model includes the size distribution of defects (holes and ...

    • Tension allocation in three dimensional wound roll 

      Hoffecker, P.; Good, J. K. (Oklahoma State University, 2005-06)
      Much consideration has been given to the relationship between web line tension and the stresses they induce in three dimensional wound rolls. Three dimensional wound rolls are distinctive because their radial and circumferential ...

    • Tension control in thin film production lines 

      Oedl, G. (Oklahoma State University, 2005-06)
      A comparison of speed and tension control in pull roll stand at film production lines is given. One typical error (periodic error) of standard gear box drives is analyzed and discussed. The design of a active tension control ...

    • 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 ...