OSU - International Conference on Web Handling: Recent submissions
Now showing items 41-60 of 429
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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 ... -
Thin tape traction over a grooved roller
(Oklahoma State University, 2015-06)Traction between a thin, O(5 μm), tensioned tape and a grooved roller is studied. In the slow tape speed limit, tape contact over a grooved roller is studied analytically. A closed form relationship for the belt-wrap formula ... -
Refining our rules of thumb
(Oklahoma State University, 2015-06)Rules of thumb are common in web handling for good reasons. Many of the theories of web behavior are still under investigation and often are complex and a function of properties that are difficult to measure. Because of ... -
Moving web instability caused by the bending deflection of the support idle roller
(Oklahoma State University, 2015-06)The moving web is transported through a lot of rollers in the roll to roll process machines. These rollers are usually driven rollers, dancer rollers and idle rollers. The number of the idle roller is the largest in the ... -
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. ... -
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 ... -
Study on strip crossbow correction for uniform coating weight control
(Oklahoma State University, 2015-06)In coating process of continuous galvanizing line, transverse crossbow is frequently found in the case of thick gage or high strength steel processing. This transverse crossbow arises due to the unbalanced residual stress ... -
Development of intelligent plastic film winder "Windstar"
(Oklahoma State University, 2015-06)Flexible continuous plastic films are used to produce various products, including optical films and packaging materials, because plastic film is suited to use in mass production manufacturing processes. Generally, the web ... -
Impact of web permeability on high speed web transport
(Oklahoma State University, 2015-06)Measurements of drag on a moving web in a multi-span festoon show a stronger than expected dependency on the porosity of the web with a highly non-linear relationship. The experiments suggest a wall shear stress 3-4 times ... -
Friction characteristics between thin plastic film and steel roller
(Oklahoma State University, 2015-06)To establish the Roll-to-Roll Printed Electronics, which can be applied to manufacture the high functional thin film based devices, it is needed to combine the Roll-to- Roll transportation system and coating technology ... -
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. ... -
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. ... -
Web wrinkling resulting from moment transfer
(Oklahoma State University, 2013-06)Considerable research has been focused on the impact of roller misalignment on web instability. Early work focused on the prediction of trough instabilities in the entering span, just upstream of the misaligned roller [1]. ... -
Effects of parameter uncertainties on longitudinal web dynamics
(Oklahoma State University, 2013-06)Web handling systems are very common in industry for metal, paper, textile and polymer material treatments. The key variables to monitor and control are the web speed and web tension in each span. The objective is to reach ... -
Modeling of nip pressures and web feed rates in rubber covered nip rollers
(Oklahoma State University, 2013-06)Nip rollers are used extensively in converting processes; however, correct design and usage of these types of rollers requires a sound understanding of the mechanics of the nip in both the machine and cross-width directions. ... -
Method for calculating catenary web spans
(Oklahoma State University, 2013-06)The methods for calculating the catenary droop of a wire or cable hanging from fixed supports are well understood. For many common web materials, catenary droop or sag is not a consideration but for webs having a significant ... -
Behavior of webs transiting crowned rollers
(Oklahoma State University, 2013-06)Crowned rollers are known to center running belts by observation. Crown can be an unintentional artifact of rollers whose surfaces are machined on lathes while supported at their ends. The bending stiffness of the rotating ... -
Wireless monitoring of internal wound roll pressures
(Oklahoma State University, 2013-06)Winding is a dynamic process. The final roll is the product of all that happens during the winding process from roll start to final cutoff. Nearly all roll measurement methods try to characterize a roll's structure after ... -
Fully R2R gravure printed smart tags and related web handling challenges
(Oklahoma State University, 2013-06)Although a smart tag which can communicate with a smart phone via NFC (Near Field Communication) has been considered as a core tool for bringing up the ubiquitous society, the difficulties in integrating 13.56 MHz RFID ... -
Machine and transverse direction errors in webs: Diagnosis and remedies
(Oklahoma State University, 2013-06)The primary focus of web handling is often on tension control; however, equally important to almost any web handling or winding process is to maintain machine (MD) and transverse direction (TD) control of the web. This ...