Browsing OSU - International Conference on Web Handling by Author "International Conference on Web Handling (2017)"

Now showing items 1-20 of 22

    • Boundary conditions for lateral deformation of webs transiting rollers in roll-to-roll process machines 

      Good, J. K.; Ren, Yao; Shi, Jinxin (Oklahoma State University, 2017-06)
      The lateral deformations of webs in roll-to-roll (R2R) process machines can affect the quality of the manufacturing process. The lateral registration of the web in successive R2R processes can determine whether a product ...

    • Calculation of film tension from film position and roller position 

      Oedl, Gunter (Oklahoma State University, 2017-06)
      The web tension as a crucial parameter for a web line is normally manually influenced by the speed of the motors driving the rollers. This paper shows that is better and easier to use the roller position derived from the ...

    • Effect of mass transfer on multi-span lateral dynamics of a uniform web 

      Brown, Jerald L. (Oklahoma State University, 2017-06)
      This paper will show that the acceleration equation used in multi-span lateral dynamic models is a consequence of mass transfer between spans1. Mass transfer effects fully account for the equation currently used in ...

    • Effect of mass transfer on multi-span lateral dynamics of nonuniform webs 

      Brown, Jerald L. (Oklahoma State University, 2017-06)
      Since the publication of Shelton's original work [1] on lateral web dynamics in 1968, the cambered1 web has attracted the attention of researchers. Shelton, himself, felt it was a natural "next step" in lateral dynamics. ...

    • Explicit simulations of wrinkle formation due to web non-uniformity 

      Fu, Boshen; Gilgenbach, Eric; Nackers, Katie; Brumm, Russ (Oklahoma State University, 2017-06)
      It is very common to laminate different materials together and then form, transport and process a web with non-uniform structure in the product manufacturing industry. The periodic media analysis (PMA) method in Abaqus/Explicit ...

    • 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. ...

    • Machine direction registration dynamics model of a rotary printing press 

      Rice, Brian S.; Walton, Robert L. (Oklahoma State University, 2017-06)
      We derive an analytical model of the machine direction registration dynamics of a continuous-web, electronic line shaft (ELS) rotary printing press. We use the model to quantify the affect of tension disturbances on machine ...

    • Measurement and quantification of baggy webs 

      Swanson, Ronald P. (Oklahoma State University, 2017-06)
      Webs that have crossweb variation in machine direction length are commonly called "Baggy Webs". All real webs have some degree of bagginess. When the bagginess exceeds some quantity, web handling problems such as wrinkling ...

    • Measurement of web curl 

      Swanson, Ronald P. (Oklahoma State University, 2017-06)
      Generally it is desirable for web based products to have a flat planar shape. Unfortunately coated and laminated products often assume a curved shape. This is a defect commonly called "Curl". The first step in solving most ...

    • Modeling and computer simulation of zero speed splice unwinds 

      Pagilla, Prabhakar R. (Oklahoma State University, 2017-06)
      A computer program for conducting model simulations for zero speed splice unwinds is described in this paper. A typical unwind system consisting of the unwinding material roll, festoon, dancer, and pull rolls is considered. ...

    • New model for the steady state deformation and friction of webs on rollers 

      Jones, Dilwyn P. (Oklahoma State University, 2017-06)
      A web moving through process machinery interacts with rollers through frictional forces, which may change its direction of motion and tension. By modelling the web as a beam, these forces can be calculated from its tension, ...

    • Nip impinged center-winding including a nonlinear beam model 

      Mollamahmutoglu, C.; Good, J. K.; Markum, R.; Gale, J. W. (Oklahoma State University, 2017-06)
      Nip pressure is commonly applied in winding processes in order to maintain structural stability and prevent air entrainment at high speeds. In nip induced winding modeling nip and roll are assumed to be beams with ...

    • Nip mechanics of nano-impression lithography in roll-to-roll process machines 

      Ren, Yao; Good, J. K. (Oklahoma State University, 2017-06)
      Nano-Impression Lithography (NIL) has been demonstrated to produce nano features on webs that have value to society. Such demonstrations have largely been the result of NIL processes that involve the discrete stamping of ...

    • Optimizing idler diameter 

      Lynch, Ronald (Oklahoma State University, 2017-06)
      The idler is probably the most common roller in web handling, but it is one of the least studied. It influences both the highest and lowest tension we can run, and can defeat the most sophisticated tension control schemes. ...

    • Optimizing nipped roller systems 

      Walker, Timothy J. (Oklahoma State University, 2017-06)
      Nipped rollers are central to many web converting processes - printing, coating, embossing, calendaring, and winding. Uniform products require uniform load and pressure from the nipping process. Uneven nipping not only ...

    • Preventing negative issues at nip roller 

      Bass, Tom; Nagahori, Atsushi (Oklahoma State University, 2017-06)
      Dealing with film scratches, wrinkles, and air entrapment is a problem that many converters are faced with on a regular, if not daily basis. Part of the problem is the rollers they have to work with at the nip point. ...

    • Roller nip deflections 

      Cole, Kevin; Schneider, Brooks (Oklahoma State University, 2017-06)
      Rubber covered nip rollers are used in many web handling and processing applications. Successful use of these systems requires an accurate knowledge of the impact of various design and process parameters on key response ...

    • Spatially dependent transfer functions for web lateral dynamics 

      Cobos Torres, E. O.; Pagilla, Prabhakar R. (Oklahoma State University, 2017-06)
      In this paper we derive spatially dependent transfer functions for web span lateral dynamics which provide web lateral position and slope as outputs at any location in the span; the inputs are guide roller displacement, ...

    • 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 ...

    • Using a winding model to reduce winding defects 

      Thuer, Amy (Oklahoma State University, 2017-06)
      As a roll is wound, stresses in the roll develop - and change as the roll builds. The stresses on each layer in the wound roll influence whether the roll is likely to telescope, star, cinch, yield, block or ooze - to name ...