Browsing OSU - International Conference on Web Handling by Author "International Conference on Web Handling (2013)"

Now showing items 21-31 of 31

    • Modeling of the transport behavior of low modulus webs 

      Raul, Pramod R.; Pagilla, Prabhakar R. (Oklahoma State University, 2013-06)
      We consider three key issues in this study for low modulus webs. First, transport in the high strain region is considered when the materials exhibit nonlinear and viscoelastic behavior. Second, in-plane biaxial strain is ...

    • Modeling web behaviour in printing press and in printed electronics 

      Parola, Markku; Sorvari, Joonas (Oklahoma State University, 2013-06)
      VTT together with several companies in the printing value chain have studied web handling through the printing press. Studies have focused on the web tension formation mechanisms in printing which have an effect e.g. on ...

    • 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 ...

    • On the governing equation for web tension with out-of-round rolls 

      Branca, Carlo; Pagilla, Prabhakar R.; Reid, Karl N. (Oklahoma State University, 2013-06)
      In roll-to-roll (R2R) manufacturing the presence of non-ideal elements, such as out-of-round or eccentric rolls, induces periodical oscillations in the web tension signal. Model simulations based on ideal elements do not ...

    • 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 ...

    • Using roll hardness to screen for excessive web bagginess 

      Thuer, Amy (Oklahoma State University, 2013-06)
      Various methods are available for quantifying bagginess. But they can be tedious and impractical in a production setting. Often one just needs to know if a roll is too baggy to run without wrinkling during converting. ...

    • Web tension regulators - control heuristics 

      Klassen, Clarence (Oklahoma State University, 2013-06)
      Classical Control Theory using closed-loop controllers has been applied to drives for web handling beginning in the 1940's. Back then the mathematics was ahead of the tools for analysis as well as the modeling and the drive ...

    • Web wrinkling resulting from moment transfer 

      Fu, Boshen; Good, J. K. (Oklahoma State University, 2013-06)
      Considerable research has been focused on the impact of roller misalignment on web instability. Early work focused on the prediction of trough instabilities in the entering span, just upstream of the misaligned roller [1]. ...

    • Winding of plastic barrier films 

      Hoffmann, Frank; Kirchhoff, Tim; Heinzler, Felix (Oklahoma State University, 2013-06)
      High quality plastic films are produced using the cast or blown film extrusion processes. Several kinds of resins are coextruded in a film of up to 11 layers to generate the best technical properties at competitive costs. ...

    • Wireless monitoring of internal wound roll pressures 

      Walker, Timothy J.; Updike, Robert C. (Oklahoma State University, 2013-06)
      Winding is a dynamic process. The final roll is the product of all that happens during the winding process from roll start to final cutoff. Nearly all roll measurement methods try to characterize a roll's structure after ...

    • Wrinkle initiation and development in heated webs on drums 

      Jones, Dilwyn P.; McCann, Michael J.; Bishop, Charles A.; Abbott, Steven (Oklahoma State University, 2013-06)
      Wrinkles often occur in webs heated on drums and rollers. Anecdotal evidence from vacuum metalizers suggests that wrinkles are initiated by small grit particles or surface imperfections that lift the web off the drum. An ...