Browsing Proceedings of the International Conference on Web Handling by Title

Now showing items 111-130 of 429

    • Effects of web camber on handling 

      Shelton, J. J. (Oklahoma State University, 1997-06)
      The definition of camber and a laboratory method of measurement of camber are presented. Common problems caused by camber and methods for avoidance of these problems are discussed.

    • Electromagnetic lateral control system of floating strip 

      Kamiyama, T.; Uchida, H.; Marumoto, S.; Yoneda, H.; Suzuki, N. (Oklahoma State University, 1995-06)
      Strip floating system is effective to avoid strip wrinkles and defects caused by roll contact, and to keep high quality of steel strip in the continuous processing lines.

    • Empirical investigation of weave versus web-to-roller traction in floating loop dryers 

      Walton, R. L. (Oklahoma State University, 2001-06)

    • Engineering paper tubes to improve winding performance of various materials 

      Gerhardt, T. D.; Qui, Y. P.; Johnson, C. G.; Rhodes, D. E. (Oklahoma State University, 1999-06)
      Over the past 10 years, Sonoco has conducted fundamental, solid mechanics research concerning structural behavior of spirally wound paper tubes. The scope of this program has included experimental, numerical, and analytical ...

    • Entrained air films in center wound rolls - with and without the nip 

      Taylor, R. M.; Good, J. K. (Oklahoma State University, 1997-06)
      Development of analytical expressions predicting the thickness of fluid layers in the area of a foil bearing has been ongoing for nearly forty years. These expressions have been adapted to include air as the lubricating ...

    • Estimating modulus of elasticity, torque loss, and tension using an Extended Kalman Filter 

      Boulter, B. (Oklahoma State University, 1999-06)
      A set of sub-optimal Extended Kalman Filters (EKF's) are described. The filters are used to estimate web tension, modulus of elasticity, and loss torque for all sections in a small web processing line located at Rockwell ...

    • Estimation of air film thickness between moving webs and guide rollers 

      Hashimoto, H. (Oklahoma State University, 1997-06)
      In this paper, in order to estimate an air film thickness between moving web and guide roller (web spacing height), the air film thickness formula was derived based on the finite width compressible foil bearing theory. In ...

    • Evaluating the impact of non-uniform paper properties on web lateral instability on printing presses 

      Parent, Frederic; Hamel, Jean (Oklahoma State University, 2013-06)
      Lateral instability of the paper web during printing may lead to several quality issues such as print misregistration, wrinkles, tracking issues, etc. The problem often leads to paper rejects and claims from printers. There ...

    • Evaluation of physical properties of thin film and measurement of unsteady thermal stress 

      Nishida, Takeshi; Sunami, Yuta; Hashimoto, Hiromu (Oklahoma State University, 2019-06)
      Winding defect such as the roll wrinkles or slips to lose the value of the product. Winding defect is caused by the internal stress condition in the roll and the temperature change of the roll after winding. Therefore, it ...

    • Experimental and numerical studies of the reelspool and the parent roll interaction under gravity forces 

      Innala, M.; Vanninen, R. (Oklahoma State University, 2001-06)
      In wide paper machines, gravity forces may cause excessive stresses to the paperlayers of the parent roll due to bending of the reel spool. Experimental and numerical studies of these effects will be described in this ...

    • Experimental and theoretical study of web traction over a nonvented roller 

      Rice, B. S.; Cole, K. A.; Muftu, S. (Oklahoma State University, 1999-06)
      The traction developed between a thin flexible web, wrapped around a nonvented, rotating cylindrical roller is studied experimentally and theoretically. A series of eight webs representing a wide range of surface roughness ...

    • Experimental investigations in winding and unwinding operations 

      Horand, D.; Juhe, H. H. (Oklahoma State University, 1997-06)
      The trend in winding in the paper industry can be simply characterized by : wider and faster with more dense webs with a lower level of accepted defects. This is valid for paper production and printing, especially in rotogravure.

    • Experimental study of idler roll slippage 

      Ries, J. P.; Farr, T. J. (Oklahoma State University, 1999-06)
      Idler roll slippage occurs when the roll surface velocity no longer equals the velocity of the web that transports the roll. In a web transport system, slippage will produce scratches in sensitive, coated web or cause ...

    • Experimental study of winding zone dynamics 

      Ries, J. P. (Oklahoma State University, 1997-06)
      The elastic nature of plastic films and the rotational inertia of rolls, spindles and drives cause a film handling line to exhibit the characteristics of a dynamic system. This dynamic response can be observed by measuring ...

    • Explicit analysis of the lateral mechanics of web spans 

      Fu, B.; Markum, R.; Reddy, A.; Vaijapurkar, S.; Good, J. K. (Oklahoma State University, 2011-06)
      All previous analyses of webs being steered through process equipment have required enforcement of assumed boundary conditions. An example is the normal entry boundary condition which has been employed in many web/roller analyses.

    • Explicit analysis of the lateral mechanics of webs transiting concave rollers 

      Vaijapurkar, S.; Good, J. K. (Oklahoma State University, 2011-06)
      All previous analyses of webs encountering spreading devices have required enforcement of assumed boundary conditions. An example is the normal entry boundary condition which has been employed in many web/roller analyses. ...

    • Explicit simulations of cambered web steering 

      Fu, Boshen; Good, James K. (Oklahoma State University, 2015-06)
      Cambered webs are common in the web handling industry. The mechanics analyses of stressed cambered webs have been reported by several publications [1]-[3]. The majority of the test data that exist demonstrate that cambered ...

    • Explicit simulations of web transport through process machines using periodic media analysis technique 

      Fu, Boshen; Michal, Neal (Oklahoma State University, 2015-06)
      In this paper, the periodic media analysis (PMA) technique in Abaqus/Explicit [1] has been applied to simulate multiple cases of web transport through process machines. The Abaqus models for web transport developed in the ...

    • 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 ...

    • Exploring the strain transport formula 

      Lynch, Ron (Oklahoma State University, 2019-06)
      The strain transport formula relates the velocity of a moving web to its strain. It is based on the conservation of mass which, when applied to webs, becomes the conservation of relaxed length. Simply stated it says, the ...