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Now showing items 11-18 of 18
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 ...
Predicting web wrinkles on rollers
(Oklahoma State University, 2009-06)
There are two levels of web instability in web lines. The first level of web instability is called web troughs. Web troughs are due to the instability of webs that occur in free web spans. Web troughs have been shown to ...
Wound-in-tension in a non-woven web
(Oklahoma State University, 2005-06)
Literature on wound roll structure of non-homogeneous webs is scarce. Experimental and analytical research on wound roll structure of homogeneous materials such as plastic films and paper has been reported extensively, ...
Wound-on-tension for two drum winders
(Oklahoma State University, 2003-06)
The two drum winder remains to be a high productivity winder for rewinding some paper and nonwoven webs at very high speeds. Winding models of varied capabilities exist for center winders, center winders with rider rollers, ...
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 ...
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 ...
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 ...
Mechanics of grooved flexible spreader rolls
(Oklahoma State University, 2007-06)
All known web spreading hardware work based upon one of three principles. Sometimes it is unclear which principle(s) apply to a given spreading device. The flexible spreader roller is such a device. In this paper we will ...