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Now showing items 121-130 of 153
Finite element analysis of winding nip mechanics
(Oklahoma State University, 2009-06)
Wound-on-Tension (WOT) is the tension in the outermost layer of a winding roll that is created due to the incoming web tension and the tension induced by the nip roller called Nip-Induced-Tension (NIT). This paper presents ...
Winding of interleaved materials
(Oklahoma State University, 2005-06)
The manufacturing of flexible display products has very tight specifications on the dimensional changes between the coating stations or between different passes of a multi-pass coating process. Web stretching and stress ...
Linear image detector-based edge scan sensor
(Oklahoma State University, 2001-06)
It has always been problematic to accurately sense a nonwoven (spunbond) material edge by an analog photoelectric or ultrasonic means. A sensor based on analog photoelectric or ultrasonic detection determines the lateral ...
Tension control in thin film production lines
(Oklahoma State University, 2005-06)
A comparison of speed and tension control in pull roll stand at film production lines is given. One typical error (periodic error) of standard gear box drives is analyzed and discussed. The design of a active tension control ...
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 ...
Static and dynamic properties of CFRP rollers
(Oklahoma State University, 2009-06)
Carbon fiber rollers combine high axial stiffness with low weight. This leads to higher bending frequencies and increased critical speed and makes them suitable for high speed machines as web guide rollers or as other ...
Abilities and inabilities of wound roll models to predict winding defects
(Oklahoma State University, 2005-06)
Wound roll models began appearing in the literature 40 years ago. These models predict internal stresses within wound rolls due to winder operating conditions and web material properties. The models have progressed much ...
Strategies for competitiveness
(Oklahoma State University, 2003-06)
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 ...
Improvement of control of a web accumulator
(Oklahoma State University, 2009-06)
Previous analysis of the dynamics of a conventional accumulator (no driven rollers within the accumulator, with all rollers identical) was published by Shelton [1]. This 1999 analysis showed that such accumulators commonly ...