Bulky paper and board at a high dry solids content with foam forming

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

8 Citations (Scopus)


In foam forming fibres are dispersed into an aqueous foam, which prevents fibre flocculation and improves product quality. The potential of foam forming technology has been demonstrated several times in laboratory scale experiments but there are only a few studies performed in realistic process conditions. In this paper we introduce results from recent trials done at VTT's SUORA pilot environment. We show how foam forming leads to several percentage points higher dry solids content after the press section, which implies even 20% savings in drying energy. At the same time, foaming improves bulk and formation. We further demonstrate that in the case of forming with foam, cellulose nanofibrils (CNF) can be used as a strength additive without negative impact on dewatering or formation
Original languageEnglish
Title of host publicationPast and Future of OCC Systems, 2015 PaperCon Conference
PublisherTAPPI Press
ISBN (Print)978-151081887-3
Publication statusPublished - 2015
MoE publication typeA4 Article in a conference publication
EventPaper Conference and Trade Show, PaperCon 2015 - Atlanta, United States
Duration: 19 Apr 201522 Apr 2015


ConferencePaper Conference and Trade Show, PaperCon 2015
Abbreviated titlePaperCon 2015
Country/TerritoryUnited States


  • foam forming
  • cellulose nanofibrils (CNF)
  • dry solids content
  • bulk
  • formation
  • flocculation


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