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Now showing items 11-20 of 23
Tension disturbances in a turret winder
(Oklahoma State University, 2019-06)
Turret winders are designed to produce batches of rolls from a continuously moving web. Typically, two spindles are mounted on a turret, 180 degrees apart. The winding roll remains in the inside (winding) position until ...
Viscoelastic web curl due to storage in wound rolls
(Oklahoma State University, 2019-06)
While bending strains result from any web being wound at a radius of curvature into a roll, these bending strains are largest for the thicker homogeneous webs and laminates. Many webs are viscoelastic on some time scale ...
Photonic curing for enhancing the performance of roll-to-roll printed electronic devices
(Oklahoma State University, 2019-06)
The advent in printing technology promotes the possibility of roll-to-roll manufacturing process for low-cost, high throughput, and large area printing of the electronic devices in flexible substrate materials. However, ...
Modeling slip between a web and a roller
(Oklahoma State University, 2019-06)
In roll-to-roll processes, slip between a web and a roller may be considered a defect. Slip can cause scratches which can be detrimental to a product, if not catastrophic. As line speeds increase to meet demands for more ...
New governing equation for web tension by employing a Neo-Hookean material model
(Oklahoma State University, 2019-06)
In this work, we derive a governing equation for web tension in a span by employing a Neo-Hookean material model that is applicable for transport of web materials under both small and large strains. This governing equation ...
Real time data analytics as applied to web-to-roller traction in manufacturing
(Oklahoma State University, 2019-06)
Avoidance of web handling-related imperfections is often a challenge. As an example, the limit of web-to-roller traction is typically not detected until it is exceeded, resulting in product damage. Detection is often made ...
Parametric study of nip load control on a pope reel
(Oklahoma State University, 2019-06)
The secondary arms on a conventional pope reel control the nip load between the winding parent roll and the reel drum. As the parent roll grows, the secondary arms pivot away from the reel drum changing the angle of contact ...
Predicting the web length and layers in a wound roll
(Oklahoma State University, 2019-06)
The length of web in a wound roll is one mark of roll quality. The available web length in a roll is a concern for many who process webs and those who convert webs. There are algorithms that estimate the length of web and ...
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 ...
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.