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Explicit simulations of web transport through process machines using periodic media analysis technique
(Oklahoma State University, 2015-06)
In this paper, the periodic media analysis (PMA) technique in Abaqus/Explicit [1] has been applied to simulate multiple cases of web transport through process machines. The Abaqus models for web transport developed in the ...
Longitudinal slip in rolling contact
(Oklahoma State University, 2013-06)
In printing machines incorporating indirect printing technology, the image or pattern is first printed onto a blanket cylinder having an elastic rubber surface. Subsequently, the pattern is transferred to the substrate. ...
Systematic method for determining the controller gains in a multi-span web line
(Oklahoma State University, 2019-06)
A web line may have multiple locations where feedback systems are used to control web and roller speeds, and web tension. The Euclid Web Line (EWL) in the Web Handling Research Center at Oklahoma State University is such ...
Dimensional stability of substrates for printed electronics
(Oklahoma State University, 2015-06)
Substrates for flexible displays must retain registration between multiple process steps. Although polyester substrates offer cost and handling advantages, their dimensions are affected by tension, temperature and humidity. ...
Roll speed and web tension regulation using two degree of freedom control systems
(Oklahoma State University, 2015-06)
In this paper, we first consider the problem of load speed regulation in a two inertia system consisting of a motor shaft connected to the load shaft via a mechanical transmission. The problem is reminiscent of a material ...
Evaluation of physical properties of thin film and measurement of unsteady thermal stress
(Oklahoma State University, 2019-06)
Winding defect such as the roll wrinkles or slips to lose the value of the product. Winding defect is caused by the internal stress condition in the roll and the temperature change of the roll after winding. Therefore, it ...
Containerboard and printing paper wound-on-strain measurements on a pilot winder
(Oklahoma State University, 2015-06)
Wound-On-Strain (WOS) measurement arrangement was set up on a single drum pilot-winder in the Winding Research Center of Valmet Technologies Inc. in Finland. The measurement was implemented with two Laser Doppler Velocimeters ...
Roll-to-roll gravure printed smart food package to replace the "use-by" date system of foods
(Oklahoma State University, 2019-06)
The implementation of internet of things (IoT) to the food industry offers a great deal, accompanying each functional unit from production to the consumption to ensure the quality of a particular food item. Among several ...
Century of web handling literature
(Oklahoma State University, 2011-06)
This paper is a review of some 3,500 published works in the areas of web handling, winding, converting and related subjects. These individual works include articles, books, columns, conference papers, instruction manuals, ...
Wrinkling of wide webs
(Oklahoma State University, 2011-06)
Wrinkling remains one of the top causes of converting process waste. Though wrinkles created by roller misalignment and web bending (shear wrinkles) are well-understood, nearly all the published research and modeling has ...