Search
Now showing items 1-10 of 153
Transient 2D paper web drying model based on CFD
(Oklahoma State University, 2009-06)
In the present article, a model combining the benefits of the small scale and large scale approaches towards modeling paper drying in a paper machine dryer section environment is described. The model is transient and ...
Prevention of web floating at wrapped transport and guide rollers
(Oklahoma State University, 2003-06)
Increasing productivity of web converting machines requires constructive improvements for the prevention of web floating at transport and guide rollers. Existing solutions which carry off the air like vacuum or grooved ...
Web tension in an accumulator and industry needs for the future
(Oklahoma State University, 2009-06)
A web is defined as a continuous strip of flexible material. Continuous web processes provide cost savings to manufacturers and converters. Converting processes use unwinds to provide a continuous supply of web material. ...
Issues in modeling slitting of magnetic tapes
(Oklahoma State University, 2003-06)
In order to quantify and understand the driving force for film layer fracture, delamination, and the cutting phenomena in general, an idealized two-dimensional "slitting" model was developed. The model includes two lower ...
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 ...
Measurement of web surface profiles using fringe projection
(Oklahoma State University, 2009-06)
In this paper a full-field measurement technique, namely fringe projection technique was implemented to determine the three-dimensional surface profile for situations where webs are opaque or translucent. In this method, ...
Prediction model of paper-web wrinkling and some numerical calculation examples with experimental verifications
(Oklahoma State University, 2005-06)
In the web handling technology, it is very important engineering problems to predict and protect web wrinkling from several view points of product quality, manufacturing cost and so on. In this paper, the prediction model ...
Experimental and numerical studies of the reelspool and the parent roll interaction under gravity forces
(Oklahoma State University, 2001-06)
In wide paper machines, gravity forces may cause excessive stresses to the paperlayers of the parent roll due to bending of the reel spool. Experimental and numerical studies of these effects will be described in this ...
Complete material law of paper for modelling and simulation of finishing processes
(Oklahoma State University, 2005-06)
A complete three-dimensional material law is necessary for the mathematical description of the material behaviour and for the simulation and calculation of finishing or converting processes. In order to achieve this goal, ...
Web bagginess: Making, measurement and mitigation thereof
(Oklahoma State University, 2001-06)
Web bagginess is a defect so tenacious that few machines will totally escape its grip. It is so pervasive that it can be found on materials as diverse as tissue, writing paper, carpet, nonwovens, plastic film and steel. ...