Browsing Proceedings of the International Conference on Web Handling by Title
Now showing items 231-250 of 429
-
Modeling of laminated webs
(Oklahoma State University, 2007-06)A dynamic model of the longitudinal behavior of a laminated web is developed. A single web model that takes into account both thermal and hygral strains is developed first from first principles; the model assumes heat ... -
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. ... -
Modeling of the transport behavior of low modulus webs
(Oklahoma State University, 2013-06)We consider three key issues in this study for low modulus webs. First, transport in the high strain region is considered when the materials exhibit nonlinear and viscoelastic behavior. Second, in-plane biaxial strain is ... -
Modeling rubber covered nip rollers in web lines
(Oklahoma State University, 2001-06)Rubber covered nip rollers have a number of applications within web lines. Rubber covered rollers are often used to nip the web against a metal surfaced roller that is driven to achieve a certain web velocity or web tension. ... -
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 ... -
Modeling the behavior of the paper web in printing presses
(Oklahoma State University, 2005-06)The production efficiency of printing presses is limited by runnability problems such as web breaks, register errors, wrinkling and lateral instability of the paper web. To explore these phenomena, one must study the ... -
Modeling the tension of the paper web
(Oklahoma State University, 2001-06)The tension distribution of a paper web in a paper machine is typically uneven and the edges of the web are normally slacker than the middle areas. This contributes to many problems not only in the paper making process but ... -
Modeling web behaviour in printing press and in printed electronics
(Oklahoma State University, 2013-06)VTT together with several companies in the printing value chain have studied web handling through the printing press. Studies have focused on the web tension formation mechanisms in printing which have an effect e.g. on ... -
Modeling web traction on rollers
(Oklahoma State University, 1995-06)When web tension changes between entry and exit on a roller, the tension change occurs in a slip zone in the last part of the wrap, whose size is given by the well-known Capstan or Belt equation. A method for modelling ... -
Modeling wound rolls using explicit FE methods
(Oklahoma State University, 2007-06)A new method of wound roll analysis using an explicit finite element formulation is presented in this paper. The stresses developed in center wound rolls with and without an undriven nip roller are discussed and compared ... -
Movement of layers and induced tension in the nip area between drum and paper layers
(Oklahoma State University, 2011-06)During paper manufacture and processing production losses occur during winding of machine-wide paper rolls and finished rolls due to winding faults. During the winding process at least one drum (steel or rubber-covered) ... -
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 ... -
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 ... -
Multiple-tension control using a new approach in signal-processing
(Oklahoma State University, 1997-06)A new tension control system is described, which allows the simultaneous control of up to four actuators, such as drives, brakes or clutches. It incorporates four speed/torque control modules and three tension control ... -
Myth busters: Web handling and the power of modeling
(Oklahoma State University, 2013-06)Web handling is filled with myths and folklore about things to do and not to do, about how to design web paths, and about how to handle specific situations. The folklore and myths are often industry specific and many web ... -
New decentralized control in processing machines with continuous moving webs
(Oklahoma State University, 1993-06)Web-products are manufactured in sections of rollers which transport the web according to specific technological demands. To achieve the required final product, the transport of the web has to be successful without material ... -
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 ... -
New method for analyzing the deformation and lateral translation of a moving web
(Oklahoma State University, 2005-06)A new method is presented for modeling the elastic behavior of webs conveyed over rollers. In addition to producing detailed descriptions of stress fields, it provides a new way of looking at problems that will help web ... -
New method for measurement of wound-in-tension in webs wound into rolls
(Oklahoma State University, 2007-06)The Wound-In-Tension (WIT) is the tension in the outermost layer of a winding roll. The Wound-In-Tension is an important parameter that controls the stresses inside the wound roll which in turn determines the quality of ... -
New model for the steady state deformation and friction of webs on rollers
(Oklahoma State University, 2017-06)A web moving through process machinery interacts with rollers through frictional forces, which may change its direction of motion and tension. By modelling the web as a beam, these forces can be calculated from its tension, ...