Density development in foam forming

Wet pressing dynamics

Marjo Järvinen, Riku Pihko, Jukka A. Ketoja (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The compression behaviour of both foam and water formed wet sheets was studied in the laboratory. The development of sheet thickness was followed for different pressing dynamics including both short and long pulses. The immediate recovery of sheet thickness after the first short pressing pulse was clearly better for foam than for water. The bulk advantage of foam forming gradually reduced as the number of pressing pulses increased. The solids content after wet pressing became higher for foam than water forming. The differences in sheet density and dewatering for the two forming methods should be taken into account when developing industrial processes for lightweight fibre-based products.

Original languageEnglish
Pages (from-to)226-236
Number of pages11
JournalNordic Pulp and Paper Research Journal
Volume33
Issue number2
DOIs
Publication statusPublished - 26 Jul 2018
MoE publication typeA1 Journal article-refereed

Fingerprint

Pressing (forming)
pressing
foams
foam
Foams
Water
dewatering
water
Dewatering
Compaction
compression
Recovery
Fibers

Keywords

  • compression
  • density
  • foam
  • forming
  • solids content
  • water
  • wet pressing

Cite this

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Density development in foam forming : Wet pressing dynamics. / Järvinen, Marjo; Pihko, Riku; Ketoja, Jukka A. (Corresponding Author).

In: Nordic Pulp and Paper Research Journal, Vol. 33, No. 2, 26.07.2018, p. 226-236.

Research output: Contribution to journalArticleScientificpeer-review

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