Search
Now showing items 21-30 of 126
Fast winder change with reduced influence on film tension
(Oklahoma State University, 2015-06)
For a 2 station turret winder it is shown that the film length increases at winder change (turret rotation, cutting arm movement und contact roller movement). It is shown how this change in length must create a change of ...
Mechanics of cambered web belts on aligned rollers
(Oklahoma State University, 2019-06)
The lateral deformations of webs in roll-to-roll (R2R) process machines can affect the quality of the manufacturing process. Webs can enter a cylindrical roller normally if the forces required to sustain normal entry and ...
New model for the steady state deformation and friction of webs on rollers
(Oklahoma State University, 2017-06)
A web moving through process machinery interacts with rollers through frictional forces, which may change its direction of motion and tension. By modelling the web as a beam, these forces can be calculated from its tension, ...
Winding of plastic barrier films
(Oklahoma State University, 2013-06)
High quality plastic films are produced using the cast or blown film extrusion processes. Several kinds of resins are coextruded in a film of up to 11 layers to generate the best technical properties at competitive costs. ...
Control of strip tension in the heating/cooling sections of continuous annealing lines using model-based tension estimation
(Oklahoma State University, 2015-06)
Continuous annealing lines are productive manufacturing lines used by steel making companies for the manufacture of thin steel sheet products. In these lines, the steel strip is continuously heated and cooled depending on ...
Use of conservation of mass in modeling lateral behavior in moving webs
(Oklahoma State University, 2011-06)
Though conservation of mass has played a prominent role in modeling longitudinal tension, it has seen limited use in modeling problems where lateral behavior is important. This may be due to the fact that most lateral ...
Web length creep in wound rolls
(Oklahoma State University, 2019-06)
For convenience, webs are stored in wound rolls. The available web length in a wound roll is one mark of roll quality and a concern for many who process and convert webs. Elastic winding models have proven very precise at ...
Taxonomy of web and winding defects
(Oklahoma State University, 2019-06)
Constructing taxonomies can be useful for the researcher and troubleshooter alike. First, it gives us a precise language for conversation within our own plant or with our customers. This language helps us avoid using the ...
Explicit analysis of the lateral mechanics of web spans
(Oklahoma State University, 2011-06)
All previous analyses of webs being steered through process equipment have required enforcement of assumed boundary conditions. An example is the normal entry boundary condition which has been employed in many web/roller analyses.
Myth busters: Web handling and the power of modeling
(Oklahoma State University, 2013-06)
Web handling is filled with myths and folklore about things to do and not to do, about how to design web paths, and about how to handle specific situations. The folklore and myths are often industry specific and many web ...