Browsing OSU - International Conference on Web Handling by Title

Now showing items 131-150 of 429

    • Factors that control run-ahead on printing presses 

      Hamel, J.; Menard, A.; McDonald, D. (Oklahoma State University, 1999-06)
      Run-ahead is a problem that occurs on printing presses where the paper rolls are braked by metallic bands applied to their periphery. Run-ahead occurs when the web in contact with the band decelerates faster than the roll, ...

    • Fast winder change with reduced influence on film tension 

      Schuster, Stefan; Oedl, Gunter (Oklahoma State University, 2015-06)
      For a 2 station turret winder it is shown that the film length increases at winder change (turret rotation, cutting arm movement und contact roller movement). It is shown how this change in length must create a change of ...

    • Film surface considerations for enhanced winding of thin films 

      Forrest, A. W., Jr.; Anderson, V. L. (Oklahoma State University, 1997-06)
      The primary defect for thin films ( < 25μm ) consists of sinusoidal ridges that run around the wound roll of film. Previous work has shown that these defects are buckles caused by compressive stresses in the transverse ...

    • Finite element analysis of winding nip mechanics 

      Kandadai, B. K.; Good, J. K. (Oklahoma State University, 2009-06)
      Wound-on-Tension (WOT) is the tension in the outermost layer of a winding roll that is created due to the incoming web tension and the tension induced by the nip roller called Nip-Induced-Tension (NIT). This paper presents ...

    • Finite element simulation of shear slitting of aluminum webs 

      Lu, H.; Wang, B.; Ma, J.; Viswanathan, H.; Li, M. (Oklahoma State University, 2003-06)
      A three-dimensional finite element (FE) procedure has been developed to simulate shear slitting using ABAQUS/Explicit, and the process of shear slitting has been investigated for aluminum webs obeying elastic-plastic ...

    • Flutter mechanism of sheet 

      Watanabe, Y.; Suzuki, S.; Sueoka, Y.; Kunimaru, H. (Oklahoma State University, 1991-05)
      Basic study has been conducted on sheet flutter which becomes an obstacle to the operation of printing machines and paper making machines in higher speed. Following three topics are presented in this paper.

    • Free vibration analysis of thin, tensioned, helically wrapped webs using Mindlin-Reissner finite element method 

      Lopez, Ernesto; Masters, James; Muftu, Sinan (Oklahoma State University, 2007-06)
      Free vibration analysis of a thin tensioned web, wrapped around a reverser was studied. The effect of helix angle was considered. The eigen-problem was formed using finite elements and solved numerically. Design parameters ...

    • Friction characteristics between thin plastic film and steel roller 

      Hashimoto, Hiromu; Sunami, Yuta (Oklahoma State University, 2015-06)
      To establish the Roll-to-Roll Printed Electronics, which can be applied to manufacture the high functional thin film based devices, it is needed to combine the Roll-to- Roll transportation system and coating technology ...

    • From predictive models to profitability in the web-handling industry 

      Hakiel, Z. (Oklahoma State University, 1995-06)
      This paper attempts to put some of the work being done by researchers in the web-handling field, including some of the papers to be presented at this conference, into a broader business context. Various ways of utilizing ...

    • Fully nonlinear solution to the stresses inside wound rolls 

      Forrest, A. W., Jr. (Oklahoma State University, 1999-06)
      The Hakiel approach has been the accepted method for calculating stresses in wound rolls. It determines the stress in rolls by summing the stress induced by wraps of film applied to the roll surface. This approach is called ...

    • Fully R2R gravure printed smart tags and related web handling challenges 

      Cho, Gyoujin (Oklahoma State University, 2013-06)
      Although a smart tag which can communicate with a smart phone via NFC (Near Field Communication) has been considered as a core tool for bringing up the ubiquitous society, the difficulties in integrating 13.56 MHz RFID ...

    • Future online concept for roll and sheet production in papermaking technology and process requirements for web handling 

      Welp, E. G. (Oklahoma State University, 2003-06)
      The process of on-line converting is discussed as a chance to increase the productivity and quality in roll and sheet converting in paper mills. In this article the technical and process related prospects will be presented ...

    • Gauge optimization of the reference tension and nip-load in winding systems using wound internal stresses calculation 

      Knittel, Dominique; Bencheikh, Issam; Boutaous, M'hamed; Bourgin, Patrick (Oklahoma State University, 2013-06)
      In the winding process, the quality of the roll is directly related to its stress state. The winding tension and nip-load are the most significant parameters which play an important role in the stresses generated within a ...

    • Gauge optimization of the reference tension in winding systems using wound internal stresses calculation 

      Boutaous, M.; Knittel, D.; Bourgin, P. (Oklahoma State University, 2007-06)
      In winding process, the quality of the roll is directly connected to its stress state. The winding tension is the most significant parameter which plays an important role in the stresses generated within a roll, during ...

    • General model of lateral web dynamics between two reels 

      Muftu, Sinan; Yang, Hankang (Oklahoma State University, 2013-06)
      A flexible web unavoidably deviates from its prescribed (linear) path during processing. The lateral web dynamics can be caused by tilt of rollers, web defects, off axis motion of the reels and other factors. In this work ...

    • Gentle wavy defects in knurled wound rolls 

      Cole, Kevin (Oklahoma State University, 2009-06)
      The manufacture of many products involves the winding of continuous thin, flexible webs into wound rolls. In many applications involving the use of plastic webs, it is beneficial to mechanically emboss the edges of the web ...

    • Ground-effect theory and its application to air flotation devices 

      Chang, Y. B.; Moretti, P. M. (Oklahoma State University, 1995-06)
      The ground-effect theories, originally developed for air cushion vehicles (or ground-effect machines), are re-examined and compared with the air bar test results. The geometries of the tested air bars are different from ...

    • Guidelines for allowable in-plane roller misalignment using wrinkling and web break models 

      Roisum, D. R. (Oklahoma State University, 2013-06)
      While we have had wrinkling and web break models for a quarter century and the means for precision roller alignment for a half century, no consistent recommendations have been made as to allowable tolerances for roller ...

    • How core stiffness and Poisson ratio affect energy balance roll structure formulas 

      Pfeiffer, J. D.; Hamad, W. Y. (Oklahoma State University, 1991-05)
      The stiffness of the core determines how much support it will offer for the initial wraps of web material, and whether this support will be maintained as internal pressures are developed. An expression is developed for ...

    • Impact of large deformations of webs transiting rollers 

      Shi, Jinxin; Markum, Ron E.; Good, J. K. (Oklahoma State University, 2017-06)
      Webs are subjected to large out-of-plane deformations when transiting rollers in process machinery. Webs are often treated as membranes in analysis but become subject to significant bending strains when transiting rollers. ...