Feeding in rolling contact of layered printing cylinders

Joonas Sorvari (Corresponding Author), Markku Parola

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

Many web handling processes involve nips through which the web passes. Due to contact deformations, the speed at which the nip cylinders feed the web may differ from the peripheral speed of the cylinders. This paper examines in detail the feeding phenomenon in the case of layered cylinders. In particular, we focus on offset printing cylinders which are covered by a thin rubbery layer. We begin our analysis by considering existing limiting solutions of thin layered cylinders undergoing small strains, and thereafter study the large deformation rolling contact problem using the finite element method. It turns out that the feeding tendency of layered cylinders is dominated by the compressibility of the layer. However, feeding characteristics of layered cylinders are not constant but rather depend on the applied indentation: an increase in indentation may even alter the feeding tendency of the cylinders. The results also indicate that the feeding type affects web strain. Consequently, we conclude that in order to attain better web handling, the feeding characteristics of the cylinders should be known.
Original languageEnglish
Pages (from-to)82-92
JournalInternational Journal of Mechanical Sciences
Volume88
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

printing
Printing
Indentation
Offset printing
indentation
tendencies
Compressibility
Finite element method
compressibility
finite element method

Keywords

  • nip
  • rubber blankets
  • feeding
  • rolling creep
  • printing

Cite this

Sorvari, Joonas ; Parola, Markku. / Feeding in rolling contact of layered printing cylinders. In: International Journal of Mechanical Sciences. 2014 ; Vol. 88. pp. 82-92.
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Feeding in rolling contact of layered printing cylinders. / Sorvari, Joonas (Corresponding Author); Parola, Markku.

In: International Journal of Mechanical Sciences, Vol. 88, 2014, p. 82-92.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Parola, Markku

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