Better productivity by measuring web tension profile

Hannu Linna, Markku Parola, Jorma Virtanen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

7 Citations (Scopus)


The stability of a paper web as its runs in the paper machine and in the printing press determines the productivity of the whole chain - from headbox to printed product. Runnability management is becoming still more important when machine widths and production speeds are increasing year by year. One of the critical parameters is the web tension. An uneven tension profile causes slackness in the web, wrinkling and web breaks leading to poor runnability. Metso has now, as a result of an extensive developing work, IQTension for reliable monitoring of web tension profile. The system has been adapted in numerous cases of paper manufacturing processes. VTT Information Technology has been developing a new kind of data management and modelling technology for improving runnability and carried out several research projects thus showing the importance of the even tension profile. This paper presents the measuring system and proves web tension profile as a relevant indicator of paper machine runnability. Consequences of unstable tension have been seen in paper machines but also printing press runnability is strongly affected by tension characteristics. Practical cases are outlined for describing experiences in controlling web tension in paper making and its effect on machine performance. Thus, better capacity utilisation and overall productivity has been achieved. In all, more effective production means savings in raw materials, energy and the environment.
Original languageEnglish
Title of host publication55th Appita Annual Conference, Hobart, Australia 30 April-2 May 2001
Subtitle of host publicationProceedings
Place of PublicationBrunswick East
ISBN (Print)0-95855483-8
Publication statusPublished - 2001
MoE publication typeA4 Article in a conference publication
Event55th Appita Annual Conference - Hobart, Australia
Duration: 30 Mar 20012 May 2001


Conference55th Appita Annual Conference


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