Browsing OSU - International Conference on Web Handling by Author "4e0b8018-4468-4d4f-a86f-13d4d3e094ed"

Now showing items 1-7 of 7

    • Contact mechanical approach to the winding nip 

      Jorkama, M.; von Hertzen, R. (Oklahoma State University, 1999-06)
      A contact mechanical model for the winding nip, consisting of the wound roll, winding drum and the intervening sheet, is presented. The roll and drum are modeled as linear, orthotropic, homogeneous cylinders with a rigid ...

    • Development of web tension in a winding nip 

      Jorkama, M.; von Hertzen, R. (Oklahoma State University, 2001-06)
      Today practically all winding devices apply a nip to the wound roll. In this winding method, radial pressure is applied by a winding drum to the wound roll at the point where the web enters the roll. This reduces the air ...

    • Study of CD elongation of core in winding 

      Ilomaki, M.; Jorkama, M. (Oklahoma State University, 2003-06)
      In this paper the elongation of a core in a roll bottom is studied experimentally and theoretically. The CD elongation effects are of interest especially because they are known to contribute prominently to a two-drum winder ...

    • Study of stress-strain relation for paper roll 

      Arola, K.; von Hertzen, R.; Jorkama, M. (Oklahoma State University, 2001-06)
      In the present method a wound roll of paper is loaded against a nip roller and the measured values of the nip width and the roll indentation are compared with the corresponding calculated values of the non-linear problem. ...

    • Winder vibration: Causes, defects, and remedies 

      Jorkama, M. (Oklahoma State University, 2011-06)
      Web process machines employ various winder types depending on the web being wound. These winders have various rolling contacts between machine elements and the winding roll which give rise to complex vibration phenomena. ...

    • Wound roll generated unstable vibration 

      Jorkama, M.; von Hertzen, R. (Oklahoma State University, 2003-06)
      Nip contact between the wound roll and the winding drum, rider roll or some other nip roller may cause that the wound roll is deformed into a convex polygon. This deformation process is accompanied with a very strong ...

    • Wound roll generated unstable vibration on a two-drum winder 

      Jorkama, M.; von Hertzen, R. (Oklahoma State University, 2005-06)
      Nip contact between the paper roll, winding drum and rider roll or some other nip roller may cause that the wound roll is deformed into a convex polygon. This deformation process is accompanied with a strong vibration. The ...