Measurement of volume fractions of solid, liquid and gas in kraft and CTMP paper at varying moisture content

Erik Baggerud, Stig Stenström, T Lindstrom

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

12 Citations (SciVal)

Abstract

The consolidation of paper during drying is of interest to increase the understanding of the development of the paper quality. The mercury displacement technique proved suitable to measure the apparent solid density and the volume fractions of solid, liquid and gas in wet paper sheets. Measurements were performed on handsheets of chemi-thermomechanical pulp (CTMP), bleached and unbleached softwood kraft and bleached hardwood kraft. The measured apparent solid density and volume fractions were independent of the basis weight in the range of 100-250 g/m<sup>2</sup> . This investigation shows that pressing, refining and bleaching do not change the consolidation of the sheets fundamentally
Original languageEnglish
Title of host publication2003 International Paper Physics Conference. Preprints
PublisherPulp and Paper Technical Association of Canada
Pages157-163
Number of pages7
ISBN (Print)1-896742-90-4
Publication statusPublished - 2003
Event2003 International Paper Physics Conference - Victoria, BC, Canada
Duration: 2003 Sep 72003 Sep 11

Conference

Conference2003 International Paper Physics Conference
Country/TerritoryCanada
CityVictoria, BC
Period2003/09/072003/09/11

Subject classification (UKÄ)

  • Chemical Engineering

Keywords

  • softwood kraft
  • wet paper sheets
  • solid density
  • CTMP
  • mercury
  • paper quality
  • gas volume fractions
  • liquid volume fractions
  • moisture
  • solid volume fractions
  • Hg
  • bleaching
  • refining
  • pressing
  • hardwood kraft

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