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Prevention of web floating at wrapped transport and guide rollers
(Oklahoma State University, 2003-06)
Increasing productivity of web converting machines requires constructive improvements for the prevention of web floating at transport and guide rollers. Existing solutions which carry off the air like vacuum or grooved ...
Complete material law of paper for modelling and simulation of finishing processes
(Oklahoma State University, 2005-06)
A complete three-dimensional material law is necessary for the mathematical description of the material behaviour and for the simulation and calculation of finishing or converting processes. In order to achieve this goal, ...
Interactions of time dependent, thermal and hygroscopic characteristics and runnability properties of paper
(Oklahoma State University, 2007-06)
For purposes of design and optimization of industrial processing, many of the physical properties of paper have to be taken into account. The knowledge of the mechanical properties as part of the physical ones must be ...
Phenomens of rolling contact in paper calendering
(Oklahoma State University, 2009-06)
In soft calenders synthetic roll covers are "state of the art", without knowing their detailed rolling contact behavior and their phenomenological effects to gloss and smoothness of paper. Complex interactions of process ...
Quantitative analysis of nip-induced tension by use of digital image processing
(Oklahoma State University, 1999-06)
Winding paper in contact with a drum leads to the production of nip-induced tension which, to a high degree, influences the structure of the roll. Thus, comprehending the processes in the nip, including each parameter ...
Influence of the gap throttle effect on the winding process and roll quality
(Oklahoma State University, 2005-06)
In the paper industry the winding technology has a significant influence on the quality of finished rolls. The rising productivity and quality efforts require a constant optimization of the winding process concerning the ...
Analysis of the kinematic and dynamic process during winding based on a systematology of models for winding mechanics
(Oklahoma State University, 1997-06)
The winding process of web materials with low bending resistance is composed of several partial processes whose single effects are influenced by specific machine, process and material parameters. The interaction of these ...
Theoretical analysis of shear slitting of paper on the basis of a three-dimensional material law
(Oklahoma State University, 1999-06)
The slitting and cross cutting as one of the substantial manufacturing methods in paper equipment and paper processing, are characterized in many applications by practice problems, which lead to productivity and quality losses.
Regulation concept for web spreading equipment in web processing machines on the basis of neural networks
(Oklahoma State University, 2001-06)
Web spreading systems are used in converting machines in order to guarantee a folding free web transport and a sufficient slit gap or slit separation. The adjustments, dependent on the respective application, are carried ...
Future online concept for roll and sheet production in papermaking technology and process requirements for web handling
(Oklahoma State University, 2003-06)
The process of on-line converting is discussed as a chance to increase the productivity and quality in roll and sheet converting in paper mills. In this article the technical and process related prospects will be presented ...