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Now showing items 121-126 of 126
Determining the amount of sheets in a stack of paper by using a pressure stamp
(Oklahoma State University, 2011-06)
The paper will investigate the quality of an easy measuring procedure for determining the amount of sheets in a stack of paper.
Coupling of winding models and roll quality instruments
(Oklahoma State University, 2015-06)
Winding models have been under development for roughly 50 years. These models have become mature in their ability to predict the internal residual stresses within a wound roll as a function of winder type, winder operating ...
Multi-stage tensile straining during drying of SC paper
(Oklahoma State University, 2011-06)
During multi-cylinder drying on a paper machine, the paper web is under stress in the machine direction, whereas the cross direction is more or less free. The web shrinks due to drying and contracts due to web draws. The ...
Web tension behavior in the presence of eccentric rollers: Modeling and validation
(Oklahoma State University, 2011-06)
Since rotating machinery is used to transport the web on rollers, it is common to observe periodic oscillations in measured signals such as web tension and web transport speed. These periodic oscillations are more prevalent ...
Measurement of web feed rates in rubber covered nip roller applications and the impact on wrinkle formation
(Oklahoma State University, 2011-06)
Nip rollers are used extensively in web handling processes; however, rubber-covered rollers have the unwanted and often unpredictable characteristic of unknown surface speed owing to coupling between circumferential and ...
Unexpected wrinkling mechanism in thin webs
(Oklahoma State University, 2019-06)
Wrinkles and creases are a particular problem in thin web materials, leading to functional and visual defects. Their precursor is the wavy pattern in spans between rollers. Troughs running along or close to the machine ...