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Now showing items 21-30 of 31
Comparative study on active and passive dancers used for attenuation of web tension disturbances
(Oklahoma State University, 2003-06)
A dancer mechanism, used in most of the web process lines, consists of a roller which is either connected to a fixed support by passive elements such as springs and dampers or is force loaded in opposition to the web ...
Wound-on-tension for two drum winders
(Oklahoma State University, 2003-06)
The two drum winder remains to be a high productivity winder for rewinding some paper and nonwoven webs at very high speeds. Winding models of varied capabilities exist for center winders, center winders with rider rollers, ...
Strategies for competitiveness
(Oklahoma State University, 2003-06)
Study of CD elongation of core in winding
(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 ...
Shear effects and lateral dynamics of imperfect webs
(Oklahoma State University, 2003-06)
A mathematical model describing the lateral dynamics of an imperfect web has been derived. The model includes the effect of shear forces. This was enabled by the development of a theory for beams of inhomogeneous materials. ...
Strain-inducing mechanism of a rolling nip on a paper stack
(Oklahoma State University, 2003-06)
The rolling of a cylindrical drum on a stack of separate paper sheets is studied using the finite element method. A two dimensional model under plane strain conditions is considered. The material of the sheets is modeled ...
Real time dynamic simulation of a paper winder
(Oklahoma State University, 2003-06)
Typically, large portions of the winder control system software are tested during the commissioning process. This is inefficient since production is shut down and financial pressures limit the time available for testing. ...
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.
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 ...
Thinking thin?
(Oklahoma State University, 2003-06)
Markets drive us to ever thinner webs to reduce material costs and waste going to the landfill. The challenges for running a lighter basis weight or thinner caliper are at least as difficult for web handling as they are ...