Browsing OSU - International Conference on Web Handling by Title

Now showing items 176-195 of 429

    • Laminate theory based 2D curl model 

      Kidane, Sam (Oklahoma State University, 2009-06)
      The laminate theory provides a method of analyzing the mechanics of multilayer composite laminates. With the appropriate definition of the load vector, the laminate theory can be extended to model curl resulting from ...

    • Large deformation winding models 

      Mollamahmutoglu, C.; Good, J. K. (Oklahoma State University, 2009-06)
      Almost all winding models incorporate the assumption of small linear deformations and strain in development. As such these models treat the addition of a layer of web to a winding roll with linear analysis using linear ...

    • Lateral control of a web using estimated velocity feedback 

      Pagilla, P. R.; Dwivedula, R. V.; Zhu, Y. L.; Mandal, S. S.; Hopcus, K.; Haque, J. (Oklahoma State University, 2001-06)
      The focus of this paper is on lateral control of a web using estimated motor velocity feedback. A reduced state velocity observer is designed to estimate the motor velocity based on the measured lateral position of the web ...

    • Lateral deflections of webs in air-flotation ovens 

      Moretti, P. M. (Oklahoma State University, 2001-06)
      A long web span supported by many, regularly spaced, alternating air-bars is studied. The focus is on the lateral forces on the web due to the interaction of lateral curvature with out-of-plane deflections. The effect of ...

    • Lateral dynamics of non-uniform webs 

      Swanson, Ronald P. (Oklahoma State University, 2009-06)
      A new method of generating and testing cambered web has been developed. Experimental lateral static data is presented for twenty six different conditions and dynamic data is presented for five of these conditions. Numerous ...

    • Lateral dynamics simulation of webs having cross-machine direction variation 

      Lange, Stephen; Looney, Michael; Carrle, Jeremy (Oklahoma State University, 2013-06)
      Webs often include sectional variation in caliper or modulus of elasticity as a result of undesirable manufacturing variation or by intentional design. These variations influence wrinkle formation and tracking control in ...

    • Lateral mechanics of an imperfect web 

      Olsen, J. E. (Oklahoma State University, 2001-06)
      A model describing the lateral mechanics of an imperfect web has been derived which brings forward information on the much debated fourth boundary condition. The model is based upon a generalized beam theory. Calculations ...

    • Lateral mechanics of baggy webs at low tensions 

      Olsen, J. E. (Oklahoma State University, 2005-06)
      Existing mathematical models describing lateral movement of webs such as paper or plastic film, assume that the entire width of the web is carrying tension or that the web is capable of supporting compressive stresses. For ...

    • Lateral response and control of a multi-span web system to dynamic changes to the web and conveyance hardware 

      Forrest, A. W., Jr. (Oklahoma State University, 2001-06)
      A multi-span model that predicts the lateral response of webs to changes in the upstream position of the web and any type of motion of the included rolls is presented. The model uses a beam approximation for the deflection ...

    • Layer-to-layer slippage within paper rolls during winding 

      McDonald, J. D.; Menard, A. (Oklahoma State University, 1997-06)
      Crepe wrinkles are created during reeling and winding of paper rolls against a rolling drum. These defects are associated with interlayer movement of paper within the body of the roll. To study this movement, rolls made ...

    • Limitations to sensing of web tension by means of roller reaction forces 

      Shelton, J. J. (Oklahoma State University, 1999-06)
      Classical frequency response analysis of a dancer or a roller mounted on load cells reveals that such devices are severely limited in their ability to sense the dynamic tension in a web. The response of a tension control ...

    • Linear edge sensor 

      Haque, M.; Winter, D.; Hueppelsheuser, D.; Newton, J.; Storie, G. (Oklahoma State University, 1999-06)
      In modern industrial process controls, web guiding is becoming very demanding due to variations in web materials, variable web widths, and the need for better guiding accuracy. Selecting the appropriate sensor for various ...

    • Linear image detector-based edge scan sensor 

      Haque, M. M.; Yates, J.; Schmidt, S.; Winter, D.; Hueppelsheuser, D.; Storie, G. (Oklahoma State University, 2001-06)
      It has always been problematic to accurately sense a nonwoven (spunbond) material edge by an analog photoelectric or ultrasonic means. A sensor based on analog photoelectric or ultrasonic detection determines the lateral ...

    • Longitudinal dynamics of a winding zone 

      Ries, J. P. (Oklahoma State University, 1995-06)
      The longitudinal dynamics of a moving web in a tension controlled winding zone was modeled and analyzed. The dynamics of the zone included the effects of idler roll inertia, web elasticity, package inertia and feedback ...

    • Longitudinal slip in rolling contact 

      Fugmann, Uta; Beier, Wolfgang (Oklahoma State University, 2013-06)
      In printing machines incorporating indirect printing technology, the image or pattern is first printed onto a blanket cylinder having an elastic rubber surface. Subsequently, the pattern is transferred to the substrate. ...

    • Machine and transverse direction errors in webs: Diagnosis and remedies 

      Walker, Timothy J. (Oklahoma State University, 2013-06)
      The primary focus of web handling is often on tension control; however, equally important to almost any web handling or winding process is to maintain machine (MD) and transverse direction (TD) control of the web. This ...

    • Machine direction laminate curl control 

      Werner, P. (Oklahoma State University, 1999-06)
      Machine Direction Curl is a phenomenon that develops sometime after a finished laminate is allowed to relax. The root causes of this eventual curl are due primarily to the recovering of strain, in either or both Strips A ...

    • 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 ...

    • Macroscopic effects of surface roughness in confined air-flow 

      Bourgin, P.; Boutaous, M. (Oklahoma State University, 2003-06)
      One challenge when processing flexible media such as plastic films is to obtain rolls without any aspect defect : if one considers that a "defect" (i.e. wrinkling or buckling) is due to the fact that the stress generated ...

    • Managing technology 

      Kedl, D. M. (Oklahoma State University, 1997-06)
      What changes constantly, is optimized with difficulty, and cannot be bought or sold; yet without it, making web based products is impossible? The answer: Web Handling Technology. Ten years ago 3M established a Web Handling ...