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Now showing items 131-140 of 153
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. ...
Modeling and H-infinity robust control for winding systems
(Oklahoma State University, 2001-06)
This paper presents the modeling and the H-infinity robust control for an elastic web transport system including an unwinder, a winder and a traction motor. This model has been created using laws of Physics concerning ...
Auto taper tension profile maker in a converting machine
(Oklahoma State University, 2007-06)
Winding is an integral operation in almost every web handling processes. Center-wounding are suitable and a general scheme in winding systems. However, the internal stresses within center-wound rolls can cause damage such ...
Mechanics of grooved flexible spreader rolls
(Oklahoma State University, 2007-06)
All known web spreading hardware work based upon one of three principles. Sometimes it is unclear which principle(s) apply to a given spreading device. The flexible spreader roller is such a device. In this paper we will ...
On-line tension profile optimization via moisture profile controls on the newsprint papermaking process
(Oklahoma State University, 2001-06)
This paper describes a novel multi-profile control, which can simultaneously optimize both moisture and elongation and/or tension profiles of newsprint grades. The controller can include tension profile measurement [1][2] ...
Lateral dynamics of non-uniform webs
(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 ...
Shear slitting of aluminum webs
(Oklahoma State University, 2005-06)
Shear slitting of aluminum webs using both disk knives and block knives were investigated using a laboratory slitter. The effects of the clearance, overlap, blade overdrive, and cant angle on burr height were studied on ...
Taxonomy of wrinkles
(Oklahoma State University, 2009-06)
Taxonomy is the practice and science of classification. Without taxonomy, everything is lumped into one pot and confusion prevails. All wrinkled or buckled webs should not be filed under one category. Just as birds are ...
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 ...