Experience of Seventeen Compact Wet End Systems

  • Published : 2002.12.01


Ten years ago most papermakers were convinced that a system needs to be voluminous and heavy for controllability and stability. In order to improve grade changing dynamics, the author of this paper began developing a compact papermachine wet end. The results have proven that compactness is beneficial even more broadly. Quoting Voith$^1$the trend is now the opposite - the systematic collecting and direct feeding of the individual water flows back into the system". In its gasless form this is actually covered by a POM Technology Patent.tent.



  1. Pulp and Paper Europe March/April 2002 Michael Schwarz & Al
  2. Patents based on WO 93/23612 Process and apparatus for circulating backwater in a papermachine Paul Olof Meinander
  3. Patent application FI 20000940 and related patents Paul Olof Meinander;Juha Lahti;Risto Nykanen
  4. Svensk Papperstidning v.68 no.5 Malddosering med Nivalada Gunnar Gavelin
  5. IPW / Das Papier 1 Physicochemical Mechanisms in the Treatment of Detrimental Substances - Evaluation of Treatment Efficiencies A. Esser & al