Research Topic

Dynamics of paper machinery

Roller pair of a paper calender, Voith Paper

Calendering is the last step in the production process of paper. Here, concerning appearance and printability, the needed surface properties are achieved. The operation is performed by passing the paper web through a nip between two rolls pressed against each other. There are different types of paper calenders varying in the number of nips.

In a current research project two phenomena which occur during the calendering process are investigated. The first phenomenon is called barring. Here, within days, grooves occur on the rolls leading to short operating times. The second phenomenon is characterised by an instability of the whole paper calender. Thus very large vibration amplitudes arise in very short time resulting in poor surface quality of the paper.

The research especially focuses on the nip mechanics and their effects on the dynamical behaviour of the paper calender.

Manuel Eckstein is member of the Dynamics and Vibrations Group. Students who are interested in writing a thesis, a seminar paper or in doing an advanced design project about these topics, should not hesitate to contact one of the members of the group or Prof. Peter Hagedorn directly.



Manuel Eckstein

Contact Information

Address: Dolivostr. 15, 64293 Darmstadt, Germany


Phone: +49 6151 16-2879

Fax:     +49 6151 16-4479


Office: S4|10-407

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