Search
Now showing items 351-360 of 429
Pull rollers: Plain, vacuum and unported
(Oklahoma State University, 2015-06)
The role of a pull roller in a web machine is identified. The ability of pull rollers, plain or vacuum type, to permit tension differences is explained. Three types of pull rollers are described. Among them is the un-ported ...
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 ...
Control design for longitudinal web dynamics: Benefits and drawbacks of robust control approaches
(Oklahoma State University, 2013-06)
Web tension and speed are two key variables to be monitored and controlled in order to achieve the expected final product quality. One of the main objectives in web handling plants is to reach an expected web speed while ...
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. ...
Analysis of web spreading induced by the concave roller
(Oklahoma State University, 1993-06)
This paper describes the development of a model for predicting the elastic deformations and stresses in a web crossing a concave (or negative crown) roller. The Finite Element Method was used to compute web displacements, ...
Assessing wound roll quality using a measured stiffness/model method
(Oklahoma State University, 2019-06)
For those concerned with roll quality it is difficult to suppress the urge to compress the outer surface of a wound roll with your thumb to sense how tightly the roll was wound and how large the internal pressures might ...
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 ...
Connection between longitudinal and lateral web dynamics
(Oklahoma State University, 2019-06)
Where does the entry angle come from? This paper will show that the answer to this question reveals a connection between longitudinal and lateral behavior that has gone largely unnoticed.
Effect of winder type and web material properties on wound-on-tension
(Oklahoma State University, 2013-06)
The choice of winder type for various web materials has long been a qualitative discussion. Web materials are vast and hence the range of web material properties is also vast. Valid but conflicting opinions for an optimal ...
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 ...