Browsing OSU - International Conference on Web Handling by Title

Now showing items 335-354 of 429

    • Study of CD elongation of core in winding 

      Ilomaki, M.; Jorkama, M. (Oklahoma State University, 2003-06)
      In this paper the elongation of a core in a roll bottom is studied experimentally and theoretically. The CD elongation effects are of interest especially because they are known to contribute prominently to a two-drum winder ...

    • Study of oscillation 

      Roisum, David R. (Oklahoma State University, 2017-06)
      There are many reasons to consider oscillation. Most fall under the overall desire to smear out streakiness in web caliper (basis weight, gage, thickness etc) so that it doesn't build up on some downstream process; most ...

    • Study of stress-strain relation for paper roll 

      Arola, K.; von Hertzen, R.; Jorkama, M. (Oklahoma State University, 2001-06)
      In the present method a wound roll of paper is loaded against a nip roller and the measured values of the nip width and the roll indentation are compared with the corresponding calculated values of the non-linear problem. ...

    • Study of three-dimensional nonlinear nip mechanics 

      Diehl, Ted; Stack, Kenneth D.; Benson, Richard C. (Oklahoma State University, 1993-06)
      An understanding of nip pressure and deformed nip geometry is of vital importance to the design of web handling equipment. Axial variations in nip pressure and deformed nip geometry can lead to poor product performance and ...

    • Study on strip crossbow correction for uniform coating weight control 

      Jee, Changwoon (Oklahoma State University, 2015-06)
      In coating process of continuous galvanizing line, transverse crossbow is frequently found in the case of thick gage or high strength steel processing. This transverse crossbow arises due to the unbalanced residual stress ...

    • Surface compression of wound rolls 

      Mollamahmutoglu, C.; Ganapathi, S.; Good, J. K. (Oklahoma State University, 2013-06)
      Stress levels and profiles in the vicinity of contact between a wound roll and a nip or a rigid surface are important for the quality of the product during manufacturing or storage stages. Excessive or insufficient pressure ...

    • Systematic method for determining the controller gains in a multi-span web line 

      Reish, Benjamin D.; Reid, Karl N. (Oklahoma State University, 2019-06)
      A web line may have multiple locations where feedback systems are used to control web and roller speeds, and web tension. The Euclid Web Line (EWL) in the Web Handling Research Center at Oklahoma State University is such ...

    • Systems approach to reducing winding defects at Alcoa-Warrick operations 

      Becker, B. J. (Oklahoma State University, 1997-06)
      When processing coated aluminum, coil winding defects can be a major detractor to recovery, flowtime, and customer satisfaction goals for coil coating and slitting operations. Over the past several years, extensive studies ...

    • 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 ...