Browsing OSU - International Conference on Web Handling by Title
Now showing items 260-279 of 429
-
Observations on the vibrations of paper webs
(Oklahoma State University, 2001-06)Frequency clustering and edge vibration localization of thin, wide, high-speed translating webs are investigated using a linear, translating, tensioned Kirchhoff plate model with very small but finite bending stiffness to ... -
On the durability of cores and rest roll dynamics
(Oklahoma State University, 2005-06)The printing industry is facing the same challenges as many other industries, in that demand is increasing for its processes to run faster and more reliably. Roll weight, width and web speed are steadily increasing which ... -
On the dynamics of web transfer in an open draw
(Oklahoma State University, 1993-06)A paper web running in an open draw of a high speed paper machine is subjected to various internal and external forces which stretch it and which can ultimately rupture it. The forces arise from speed differences between ... -
On the effect of width direction thickness variations in wound rolls
(Oklahoma State University, 1991-05)A first order model has been developed, which predicts the widthwise variability in wound roll diameter and stresses. This model has been verified experimentally on wound rolls of film and qualitative agreement between the ... -
On the governing equation for web tension with out-of-round rolls
(Oklahoma State University, 2013-06)In roll-to-roll (R2R) manufacturing the presence of non-ideal elements, such as out-of-round or eccentric rolls, induces periodical oscillations in the web tension signal. Model simulations based on ideal elements do not ... -
On the web tension dynamics in an open draw
(Oklahoma State University, 1995-06)Increasing productivity of paper machines, i.e. speeds, and requirements on decreasing basis weights of paper grades demand a deeper insight of the web tension behavior in the open draws. Runnability of a paper machine is ... -
On-line continuous measurement of rolls' coefficient of restitution
(Oklahoma State University, 1999-06)This paper reports on the development of a novel technique to measure on-line rolls' coefficient of restitution or "springiness". The ratio of speed of separation to speed of approach in an elastic collision is termed the ... -
On-line control of tension in web winding systems based on wound roll internal stress computation
(Oklahoma State University, 2001-06)One of the key challenges in the processing of flexible media such as plastic films is to obtain rolls without any aspect defect: if one considers that a "defect" (i.e. wrinkling or buckling) is due to the fact that the ... -
On-line tension profile optimization via moisture profile controls on the newsprint papermaking process
(Oklahoma State University, 2001-06)This paper describes a novel multi-profile control, which can simultaneously optimize both moisture and elongation and/or tension profiles of newsprint grades. The controller can include tension profile measurement [1][2] ... -
Optimization by integrating engineering and business models
(Oklahoma State University, 2005-06)To optimize is to find the "'best" solution given certain conditions and constraints. What is meant by best and how to find it has received scant attention. To the engineer, "best" may be fastest, strongest, most reliable ... -
Optimization of equipment and process conditions for film winding
(Oklahoma State University, 1999-06)Mathematical modeling of film winding has progressed to a point where it can offer much insight into the mechanics of this process. However, experience and testing on the actual hardware are still necessary to maximize ... -
Optimization of roll mechanical profiles in a continuous annealing line for steel strips
(Oklahoma State University, 1997-06)In order to set the mechanical characteristics to the target of the customer, cold rolled steel strips are annealed at high temperature in batch or continuous annealing furnaces. -
Optimization of wind-up tension of webs preventing wrinkles and slippage with experimental verification
(Oklahoma State University, 2009-06)This paper describes the optimization method of wind-up tension to prevent wound roll defects, mainly star defect (wrinkling) and telescope (slippage), based on the optimum design technique. Hakiel's nonlinear model with ... -
Optimization of winding conditions for preventing roll defects caused by thermal-viscoelastic property and experimental verification
(Oklahoma State University, 2015-06)Plastic films are used in many high functional products. They are produced on roll to roll system. The films are continuously wound in the shape of roll using this system. The wound roll is shipped to the store and ... -
Optimized slitting parameters for the shear slitting of paper
(Oklahoma State University, 2003-06)Due to the demand for an increasing quality of cutted or slitted products and the requirement of rising productivity in the slitting process, the optimization of mechanical slitting is gaining in importance for the converting ... -
Optimizing idler diameter
(Oklahoma State University, 2017-06)The idler is probably the most common roller in web handling, but it is one of the least studied. It influences both the highest and lowest tension we can run, and can defeat the most sophisticated tension control schemes. ... -
Optimizing nipped roller systems
(Oklahoma State University, 2017-06)Nipped rollers are central to many web converting processes - printing, coating, embossing, calendaring, and winding. Uniform products require uniform load and pressure from the nipping process. Uneven nipping not only ... -
Out-of-round paper rolls
(Oklahoma State University, 2003-06)Paper is usually shipped in rolls covered by a thin wrapper to protect it from moisture and dirt. In effect, the roll becomes the shipping container for the paper. A single sheet of paper is weak and fragile, but in roll ... -
Parametric study of nip load control on a pope reel
(Oklahoma State University, 2019-06)The secondary arms on a conventional pope reel control the nip load between the winding parent roll and the reel drum. As the parent roll grows, the secondary arms pivot away from the reel drum changing the angle of contact ... -
Peeling process development for thin flexible webs
(Oklahoma State University, 2007-06)Many consumer products are manufactured from continuous media. When the media is thin and flexible, it is referred to as a web. Webs are typically manufactured by extrusion or casting; however, for some applications, a ...