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Now showing items 391-400 of 429
Traction force between rotating roll and moving web considering the effect of air-entrainment and friction
(Oklahoma State University, 2003-06)
High-speed transportation of paper web sometimes leads the web handling system into unstable state because of increase in the air-entrainment into the gap between a rotating roll and moving web or the nip region of winding system.
Method for calculating catenary web spans
(Oklahoma State University, 2013-06)
The methods for calculating the catenary droop of a wire or cable hanging from fixed supports are well understood. For many common web materials, catenary droop or sag is not a consideration but for webs having a significant ...
Development of web tension in a winding nip
(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 ...
Moving web instability caused by the bending deflection of the support idle roller
(Oklahoma State University, 2015-06)
The moving web is transported through a lot of rollers in the roll to roll process machines. These rollers are usually driven rollers, dancer rollers and idle rollers. The number of the idle roller is the largest in the ...
Winder vibration: Causes, defects, and remedies
(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. ...
Air entrapment and residual stresses in rolls wound with a rider roll
(Oklahoma State University, 1995-06)
Air is entrained during the process of winding webs. Rider rolls are often employed in an effort to reduce the amount of air which enters the wound roll. This paper presents the results of an experiment which allows the ...
Optimized slitting parameters for the shear slitting of paper
(Oklahoma State University, 2003-06)
Due to the demand for an increasing quality of cutted or slitted products and the requirement of rising productivity in the slitting process, the optimization of mechanical slitting is gaining in importance for the converting ...
Two-dimensional behavior of a thin web on a roller
(Oklahoma State University, 2011-06)
This paper presents a continuation of work described at the 2009 IWEB conference in a paper titled, "Two-dimensional Behavior of a Thin Web on a Roller" [1]. In that paper (which will be referred to as Part I), linear ...
Effect of mass transfer on multi-span lateral dynamics of a uniform web
(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 ...
Modeling of the transport behavior of low modulus webs
(Oklahoma State University, 2013-06)
We consider three key issues in this study for low modulus webs. First, transport in the high strain region is considered when the materials exhibit nonlinear and viscoelastic behavior. Second, in-plane biaxial strain is ...