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Further insight in the web consolidation process - Part II. Triangular phase diagrams for analysis of paper shrinkage

Baggerud, Erik LU and Stenström, Stig LU (2005) In Nordic Pulp & Paper Research Journal 20(1). p.54-57
Abstract
A new type of triangular phase diagram has been developed in which both the volume fractions and the shrinkage modes can be visualised and compared for the consolidation process in the paper dryer. The triangular phase diagrams show the development of the solid, the liquid and the gas volume fractions as well as the shrinkage relative to either ideal or no shrinkage of the sheets. Analysis showed that for the kraft pulps the shrinkage increased continuously with decreasing moisture ratio. The shrinkage was larger than ideal shrinkage at moisture ratios below approximately 1 kg H2O/kg DS, which indicates a reduction in the gas volume in the sheets in this range of moisture ratios. The CTMP sheets showed a region of no shrinkage down to a... (More)
A new type of triangular phase diagram has been developed in which both the volume fractions and the shrinkage modes can be visualised and compared for the consolidation process in the paper dryer. The triangular phase diagrams show the development of the solid, the liquid and the gas volume fractions as well as the shrinkage relative to either ideal or no shrinkage of the sheets. Analysis showed that for the kraft pulps the shrinkage increased continuously with decreasing moisture ratio. The shrinkage was larger than ideal shrinkage at moisture ratios below approximately 1 kg H2O/kg DS, which indicates a reduction in the gas volume in the sheets in this range of moisture ratios. The CTMP sheets showed a region of no shrinkage down to a moisture ratio of 0.6-0.8 kg H2O/kg DS followed by a region of shrinkage higher than ideal shrinkage down to totally dry sheets. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nordic Pulp & Paper Research Journal
volume
20
issue
1
pages
54 - 57
publisher
Arbor Publishing AB
external identifiers
  • wos:000228457000009
  • scopus:17044366619
ISSN
0283-2631
language
English
LU publication?
yes
id
f5bab968-47c0-4536-adf9-af5d0f3f1abb (old id 151714)
date added to LUP
2007-06-25 10:08:01
date last changed
2017-01-01 07:08:26
@article{f5bab968-47c0-4536-adf9-af5d0f3f1abb,
  abstract     = {A new type of triangular phase diagram has been developed in which both the volume fractions and the shrinkage modes can be visualised and compared for the consolidation process in the paper dryer. The triangular phase diagrams show the development of the solid, the liquid and the gas volume fractions as well as the shrinkage relative to either ideal or no shrinkage of the sheets. Analysis showed that for the kraft pulps the shrinkage increased continuously with decreasing moisture ratio. The shrinkage was larger than ideal shrinkage at moisture ratios below approximately 1 kg H2O/kg DS, which indicates a reduction in the gas volume in the sheets in this range of moisture ratios. The CTMP sheets showed a region of no shrinkage down to a moisture ratio of 0.6-0.8 kg H2O/kg DS followed by a region of shrinkage higher than ideal shrinkage down to totally dry sheets.},
  author       = {Baggerud, Erik and Stenström, Stig},
  issn         = {0283-2631},
  language     = {eng},
  number       = {1},
  pages        = {54--57},
  publisher    = {Arbor Publishing AB},
  series       = {Nordic Pulp & Paper Research Journal},
  title        = {Further insight in the web consolidation process - Part II. Triangular phase diagrams for analysis of paper shrinkage},
  volume       = {20},
  year         = {2005},
}