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Now showing items 11-20 of 22
Advantages of inertial roll alignment technology in estimating web handling issues
(Oklahoma State University, 2011-06)
Roll alignment plays a crucial part in eliminating web handling issues in manufacturing processes. Web handling issues due to roll misalignment includes tracking, tension control, uneven material gauge, and in some cases, ...
Advanced process models and control strategies for rotary printing presses
(Oklahoma State University, 2011-06)
Digitally position controlled and synchronized AC motors which have replaced the former mechanical line shaft allow for advanced control strategies of rotary printing presses. New controls require new process models. The ...
Ke models: Theoretical dynamic subsystems of longitudinal web strain
(Oklahoma State University, 2011-06)
Efficient design and optimization of many production processes often require models which predict transient and steady state web strains. To date, much attention has been given to modeling web strains much less than unity. ...
Wrinkling of foils
(Oklahoma State University, 2011-06)
Aluminum and copper metal webs less than 150 microns (6-mils) are considered foils. Demand for aluminum and copper foils are growing, driven by growing markets for flexible electronics, flat panel displays, lithium batteries, ...
Bagginess and baggy streaks: A novel measurement technique to quantify tension profile of a web in cross-direction at high resolution
(Oklahoma State University, 2011-06)
A tension beam was designed to quantify cross-directional tension profile of a moving web at high resolution and high accuracy. The beam, composed of 50 individual Teflon pads resting on load cells, allows the measurement ...
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. ...
Two-dimensional behavior of a thin web on a roller
(Oklahoma State University, 2011-06)
This paper presents a continuation of work described at the 2009 IWEB conference in a paper titled, "Two-dimensional Behavior of a Thin Web on a Roller" [1]. In that paper (which will be referred to as Part I), linear ...
Controlling static on an unwinding roll
(Oklahoma State University, 2011-06)
Excessive static charges on insulating webs are the root cause for a number of problems in roll-to-roll manufacturing operations. Static charges attract contaminants and cause discharges that can ignite flammable vapors, ...
Determining the amount of sheets in a stack of paper by using a pressure stamp
(Oklahoma State University, 2011-06)
The paper will investigate the quality of an easy measuring procedure for determining the amount of sheets in a stack of paper.
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 ...