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TU Munich/PTS: Smoothing Tension

Christoph M. Hackl (TU Munich), 
Beatrix Mair (PTS), 
Société: Technische Universität München, Allemagne
Publié: dSPACE Magazine 2/2008, Oct 2008

When paper is finished in a coating system, it can be given either a glossy surface or a smooth, matte or closed one. Coated and processed paper meets the highest standards of printing quality. However, the production of coated paper is prone to web breaks, causing productivity losses. Current coaters either cannot compensate for huge variations in web tension, or do not compensate sufficiently. The objective was therefore to develop an improved control system for the web run by stabilizing web tension, taking into account the electrical and mechanical behavior of plant and web.

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