Now showing items 9-23 of 23

    • 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 ...
    • Parametric study of nip load control on a pope reel 

      Bettendorf, Robert (Oklahoma State University, 2019-06)
      The secondary arms on a conventional pope reel control the nip load between the winding parent roll and the reel drum. As the parent roll grows, the secondary arms pivot away from the reel drum changing the angle of contact ...
    • Photonic curing for enhancing the performance of roll-to-roll printed electronic devices 

      Maskey, Bijendra Bishow; Koirala, Gyan Raj; Kim, Yushin; Park, Hyejin; Yadav, Pravesh; Park, Jinhwa; Sun, Junfeng; Cho, Gyoujin (Oklahoma State University, 2019-06)
      The advent in printing technology promotes the possibility of roll-to-roll manufacturing process for low-cost, high throughput, and large area printing of the electronic devices in flexible substrate materials. However, ...
    • Predicting the web length and layers in a wound roll 

      Gajjalla, A.; Markum, Ron E.; Good, J. K. (Oklahoma State University, 2019-06)
      The length of web in a wound roll is one mark of roll quality. The available web length in a roll is a concern for many who process webs and those who convert webs. There are algorithms that estimate the length of web and ...
    • Real time data analytics as applied to web-to-roller traction in manufacturing 

      Cole, Kevin A.; Hopkins, R. W.; Hotto, N. A.; Scheible, J. J.; Schneider, Brooks J.; White, Thomas J. (Oklahoma State University, 2019-06)
      Avoidance of web handling-related imperfections is often a challenge. As an example, the limit of web-to-roller traction is typically not detected until it is exceeded, resulting in product damage. Detection is often made ...
    • Roll variability analysis for non-statisticians 

      Thuer, Amy; Dennison, Avery (Oklahoma State University, 2019-06)
      Roll variability can be characterized by several different methods. Off line cross-direction (CD) scans of thickness or coat weight give a snapshot of CD variation over a small machine-direction (MD) range. Roll hardness ...
    • Roll-to-roll gravure printed smart food package to replace the "use-by" date system of foods 

      Maskey, Bijendra Bishow; Koirala, Gyan Raj; Kim, Seongryeong; Sun, Junfeng; Shrestha, Kiran; Kim, Yushin; Park, Hyejin; Cho, Gyoujin (Oklahoma State University, 2019-06)
      The implementation of internet of things (IoT) to the food industry offers a great deal, accompanying each functional unit from production to the consumption to ensure the quality of a particular food item. Among several ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Unexpected wrinkling mechanism in thin webs 

      Jones, Dilwyn P. (Oklahoma State University, 2019-06)
      Wrinkles and creases are a particular problem in thin web materials, leading to functional and visual defects. Their precursor is the wavy pattern in spans between rollers. Troughs running along or close to the machine ...
    • Unified model for longitudinal and lateral web dynamics 

      Brown, Jerald L. (Oklahoma State University, 2019-06)
      In "The Effect of Mass Transfer on Multi-Span Lateral Dynamics of Uniform Webs" [1], it is shown that behavior of Shelton's lateral dynamic beam model [2] can be explained as the interaction of the normal entry equation ...
    • Viscoelastic web curl due to storage in wound rolls 

      Pan, S.; Azoug, Aurelie; Good, J. K. (Oklahoma State University, 2019-06)
      While bending strains result from any web being wound at a radius of curvature into a roll, these bending strains are largest for the thicker homogeneous webs and laminates. Many webs are viscoelastic on some time scale ...
    • Web length creep in wound rolls 

      Mollamahmutoglu, C.; Gajjalla, A.; Markum, Ron E.; Azoug, Aurelie; Good, J. K. (Oklahoma State University, 2019-06)
      For convenience, webs are stored in wound rolls. The available web length in a wound roll is one mark of roll quality and a concern for many who process and convert webs. Elastic winding models have proven very precise at ...
    • Wound roll structures and practical applications 

      Michal, Neal J. (Oklahoma State University, 2019-06)
      Winding is an integral process in the manufacturing and converting of nearly all web materials such as paper, film, tissue, nonwovens, aluminum and steel. Wound rolls are the most convenient, economical, and most prevalent ...