Browsing OSU - International Conference on Web Handling by Title
Now showing items 136-155 of 429
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Flutter mechanism of sheet
(Oklahoma State University, 1991-05)Basic study has been conducted on sheet flutter which becomes an obstacle to the operation of printing machines and paper making machines in higher speed. Following three topics are presented in this paper. -
Free vibration analysis of thin, tensioned, helically wrapped webs using Mindlin-Reissner finite element method
(Oklahoma State University, 2007-06)Free vibration analysis of a thin tensioned web, wrapped around a reverser was studied. The effect of helix angle was considered. The eigen-problem was formed using finite elements and solved numerically. Design parameters ... -
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 ... -
From predictive models to profitability in the web-handling industry
(Oklahoma State University, 1995-06)This paper attempts to put some of the work being done by researchers in the web-handling field, including some of the papers to be presented at this conference, into a broader business context. Various ways of utilizing ... -
Fully nonlinear solution to the stresses inside wound rolls
(Oklahoma State University, 1999-06)The Hakiel approach has been the accepted method for calculating stresses in wound rolls. It determines the stress in rolls by summing the stress induced by wraps of film applied to the roll surface. This approach is called ... -
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 ... -
Future online concept for roll and sheet production in papermaking technology and process requirements for web handling
(Oklahoma State University, 2003-06)The process of on-line converting is discussed as a chance to increase the productivity and quality in roll and sheet converting in paper mills. In this article the technical and process related prospects will be presented ... -
Gauge optimization of the reference tension and nip-load in winding systems using wound internal stresses calculation
(Oklahoma State University, 2013-06)In the winding process, the quality of the roll is directly related to its stress state. The winding tension and nip-load are the most significant parameters which play an important role in the stresses generated within a ... -
Gauge optimization of the reference tension in winding systems using wound internal stresses calculation
(Oklahoma State University, 2007-06)In winding process, the quality of the roll is directly connected to its stress state. The winding tension is the most significant parameter which plays an important role in the stresses generated within a roll, during ... -
General model of lateral web dynamics between two reels
(Oklahoma State University, 2013-06)A flexible web unavoidably deviates from its prescribed (linear) path during processing. The lateral web dynamics can be caused by tilt of rollers, web defects, off axis motion of the reels and other factors. In this work ... -
Gentle wavy defects in knurled wound rolls
(Oklahoma State University, 2009-06)The manufacture of many products involves the winding of continuous thin, flexible webs into wound rolls. In many applications involving the use of plastic webs, it is beneficial to mechanically emboss the edges of the web ... -
Ground-effect theory and its application to air flotation devices
(Oklahoma State University, 1995-06)The ground-effect theories, originally developed for air cushion vehicles (or ground-effect machines), are re-examined and compared with the air bar test results. The geometries of the tested air bars are different from ... -
Guidelines for allowable in-plane roller misalignment using wrinkling and web break models
(Oklahoma State University, 2013-06)While we have had wrinkling and web break models for a quarter century and the means for precision roller alignment for a half century, no consistent recommendations have been made as to allowable tolerances for roller ... -
How core stiffness and Poisson ratio affect energy balance roll structure formulas
(Oklahoma State University, 1991-05)The stiffness of the core determines how much support it will offer for the initial wraps of web material, and whether this support will be maintained as internal pressures are developed. An expression is developed for ... -
Impact of large deformations of webs transiting rollers
(Oklahoma State University, 2017-06)Webs are subjected to large out-of-plane deformations when transiting rollers in process machinery. Webs are often treated as membranes in analysis but become subject to significant bending strains when transiting rollers. ... -
Impact of mandrel support on core Ec
(Oklahoma State University, 2001-06)Over the past 15 years, Sonoco has conducted solid mechanics research focused on structural behavior of spirally wound, paper tubes. The scope of this program has included experimental, numerical, and analytical mechanics ... -
Impact of thickness measurement on predicting residual stresses due to winding
(Oklahoma State University, 2015-06)Axisymmetric winding models were initially developed to deal with web thickness variations that were manifested in the machine and cross machine direction. The web thickness variation is a prime input to these models. Small ... -
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 ... -
Impacts of a 90 degree twist on lateral web dynamics
(Oklahoma State University, 2015-06)Twists are sometimes used to turn or provide passive lateral control for narrow webs in those cases where space for a sufficient twist span length (to avoid a wrinkle) is achievable. This paper uses the finite element ... -
Importance of torque capacity in predicting crepe wrinkles and starring in wound rolls
(Oklahoma State University, 1995-06)Roll models provide information about the radial stresses and circumferential stresses that exist in a wound roll of web material. A derived quantity that is available from the radial stress profile is the torque capacity. ...