Web tension profile and gravure press runnability

Markku Parola, Harri Sundell, Jouko Virtanen, Dave Lang

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

An on-line web tension measuring device has been installed on a rotogravure press in a Finnish printing plant. The device provides both web direction and cross web direction measurement of unwinding paper rolls. Thr tension profiles of over 5500 rolls of LWC and SC paper were measured. The effects of web tension variability on press runnability and waste were documented. For good runnability and low wastage on the press, roll tension variability within a roll and from roll to roll should be within certain margins. The study also related tension profile development in the paper mill to the press room performance. It was found that the tension profiles on the printing press were inherited from the paper mill, either from the paper machine or the supercalenders. While the printing plant can accommodate certain roll to roll variability by sorting the rolls and running them in sequence, the problem of tension uniformity must be fixed in the paper mill. The means of control on the paper machine or on supercalenders are discussed.
Original languageEnglish
Pages (from-to)26-30
JournalPulp and Paper Canada
Volume101
Issue number2
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed

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Printing presses
Printing
Sorting
Direction compound
World Wide Web
Paper mill

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Parola, M., Sundell, H., Virtanen, J., & Lang, D. (2000). Web tension profile and gravure press runnability. Pulp and Paper Canada, 101(2), 26-30.
Parola, Markku ; Sundell, Harri ; Virtanen, Jouko ; Lang, Dave. / Web tension profile and gravure press runnability. In: Pulp and Paper Canada. 2000 ; Vol. 101, No. 2. pp. 26-30.
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Parola, M, Sundell, H, Virtanen, J & Lang, D 2000, 'Web tension profile and gravure press runnability', Pulp and Paper Canada, vol. 101, no. 2, pp. 26-30.

Web tension profile and gravure press runnability. / Parola, Markku; Sundell, Harri; Virtanen, Jouko; Lang, Dave.

In: Pulp and Paper Canada, Vol. 101, No. 2, 2000, p. 26-30.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

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AU - Parola, Markku

AU - Sundell, Harri

AU - Virtanen, Jouko

AU - Lang, Dave

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N2 - An on-line web tension measuring device has been installed on a rotogravure press in a Finnish printing plant. The device provides both web direction and cross web direction measurement of unwinding paper rolls. Thr tension profiles of over 5500 rolls of LWC and SC paper were measured. The effects of web tension variability on press runnability and waste were documented. For good runnability and low wastage on the press, roll tension variability within a roll and from roll to roll should be within certain margins. The study also related tension profile development in the paper mill to the press room performance. It was found that the tension profiles on the printing press were inherited from the paper mill, either from the paper machine or the supercalenders. While the printing plant can accommodate certain roll to roll variability by sorting the rolls and running them in sequence, the problem of tension uniformity must be fixed in the paper mill. The means of control on the paper machine or on supercalenders are discussed.

AB - An on-line web tension measuring device has been installed on a rotogravure press in a Finnish printing plant. The device provides both web direction and cross web direction measurement of unwinding paper rolls. Thr tension profiles of over 5500 rolls of LWC and SC paper were measured. The effects of web tension variability on press runnability and waste were documented. For good runnability and low wastage on the press, roll tension variability within a roll and from roll to roll should be within certain margins. The study also related tension profile development in the paper mill to the press room performance. It was found that the tension profiles on the printing press were inherited from the paper mill, either from the paper machine or the supercalenders. While the printing plant can accommodate certain roll to roll variability by sorting the rolls and running them in sequence, the problem of tension uniformity must be fixed in the paper mill. The means of control on the paper machine or on supercalenders are discussed.

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Parola M, Sundell H, Virtanen J, Lang D. Web tension profile and gravure press runnability. Pulp and Paper Canada. 2000;101(2):26-30.