Browsing OSU - International Conference on Web Handling by Title
Now showing items 400-419 of 429
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Web tension measurements in the paper mill
(Oklahoma State University, 1991-05)Web tension measuring methods and corresponding instruments have been evaluated at the Graphic Arts Laboratory of the VTT. Together with Valmet Paper Machinery, cross-web tension profiles have been studied in different ... -
Web tension profiles as measured in a rewinder and in a printing press
(Oklahoma State University, 1993-06)The web tension profile has been measured with an equipment called the CTSensor (Cross Tension Sensor) during ordinary production-runs both in rewinders and in newspaper printing presses. The measuring roller was placed ... -
Web tension regulators - control heuristics
(Oklahoma State University, 2013-06)Classical Control Theory using closed-loop controllers has been applied to drives for web handling beginning in the 1940's. Back then the mathematics was ahead of the tools for analysis as well as the modeling and the drive ... -
Web tension variations caused by temperature changes and slip on rollers
(Oklahoma State University, 2011-06)Webs are frequently heated or cooled on rollers, where thermal expansion or contraction attempts to reduce or increase tension respectively. In the case of vacuum coating, the web first cools on the chilled drum, then is ... -
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]. ... -
What we know that just isn't so
(Oklahoma State University, 2007-06)This paper proposes a metric for the permeation of the science of web handling into industry. The variable of interest is misunderstandings, myths if you will, that are common in plants. The origin of the myths is unimportant ... -
Widthwise variations in web properties and wound roll structure
(Oklahoma State University, 2005-06)Widthwise variations in web properties affect wound roll structure. Cole & Hakiel published a two-dimensional model in 1992 which took widthwise variations in web thickness into account. Based on this publication a model ... -
Winder vibration: Causes, defects, and remedies
(Oklahoma State University, 2011-06)Web process machines employ various winder types depending on the web being wound. These winders have various rolling contacts between machine elements and the winding roll which give rise to complex vibration phenomena. ... -
Winding mechanics of laminate webs
(Oklahoma State University, 2017-06)Models that describe the residual stresses due to winding single layer webs at the end of roll-to-roll manufacturing machines are mature. These models have been used to reduce or avoid defects that are due to winding. Many ... -
Winding of interleaved materials
(Oklahoma State University, 2005-06)The manufacturing of flexible display products has very tight specifications on the dimensional changes between the coating stations or between different passes of a multi-pass coating process. Web stretching and stress ... -
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. ... -
Winding plastic films: Experimental study of squeeze film flow between one smooth surface and one "rough" surface
(Oklahoma State University, 1997-06)The present paper is concerned with experiments which consist in squeezing an air layer between a rigid, smooth surface and a flexible, rough one. -
Winding problems with rotogravure jumbo-rolls
(Oklahoma State University, 1991-05)The production and conversion of jumbo rolls presents a challenge to all involved in the production process. This presentation shows that as reel dimensions continue to increase, limits are being reached with regard to ... -
Winding process calibration and comparison
(Oklahoma State University, 2015-06) -
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 ... -
Wound roll generated unstable vibration
(Oklahoma State University, 2003-06)Nip contact between the wound roll and the winding drum, rider roll or some other nip roller may cause that the wound roll is deformed into a convex polygon. This deformation process is accompanied with a very strong ... -
Wound roll generated unstable vibration on a two-drum winder
(Oklahoma State University, 2005-06)Nip contact between the paper roll, winding drum and rider roll or some other nip roller may cause that the wound roll is deformed into a convex polygon. This deformation process is accompanied with a strong vibration. The ... -
Wound roll stress analysis including air entrainment and the formation of roll defects
(Oklahoma State University, 1995-06)Numerous procedures have been developed to determine the stresses inside wound rolls of film. These typically use factors such as winding tension, film thickness and film properties to calculate the stresses. The calculation ... -
Wound roll stresses from displacement measurements
(Oklahoma State University, 1991-05)Previous wound roll models required a known Wound-In-Stress boundary condition that is easily obtainable only for the restrictive case of pure center winding with measured incoming web tension and caliper. A new boundary ... -
Wound roll structures and practical applications
(Oklahoma State University, 2019-06)Winding is an integral process in the manufacturing and converting of nearly all web materials such as paper, film, tissue, nonwovens, aluminum and steel. Wound rolls are the most convenient, economical, and most prevalent ...