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Further insight in the web consolidation process - Part III. Modelling of paper shrinkage

Baggerud, Erik LU and Stenström, Stig LU (2005) In Nordic Pulp & Paper Research Journal 20(1). p.58-63
Abstract
A model for the web consolidation process in the paper dryer is developed and compared with experimental data for the kraft pulps. The model contains one parameter called the shrinkage factor which is used as the fitting parameter to the experimental data. The shrinkage factor can have a value between zero implying no shrinkage and a value of one which implies that all the liquid volume removed leads to shrinkage. The fitted shrinkage factor is below unity in all experiments with kraft pulps except one. This indicates that not all the removed liquid causes shrinkage. The fact that the shrinkage is higher than for ideal shrinkage (which assumes that all the water removed leads to shrinkage), can be caused by the assumption that the liquid... (More)
A model for the web consolidation process in the paper dryer is developed and compared with experimental data for the kraft pulps. The model contains one parameter called the shrinkage factor which is used as the fitting parameter to the experimental data. The shrinkage factor can have a value between zero implying no shrinkage and a value of one which implies that all the liquid volume removed leads to shrinkage. The fitted shrinkage factor is below unity in all experiments with kraft pulps except one. This indicates that not all the removed liquid causes shrinkage. The fact that the shrinkage is higher than for ideal shrinkage (which assumes that all the water removed leads to shrinkage), can be caused by the assumption that the liquid is only located in the non-gaseous phase, and thus spreads over a smaller area than the total surface area. The results for the new model were compared with three previous models from the literature. Taking the whole range of beating degrees into account the new model showed the best agreement with the experimental data. (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
58 - 63
publisher
Arbor Publishing AB
external identifiers
  • wos:000228457000010
  • scopus:17044400986
ISSN
0283-2631
language
English
LU publication?
yes
id
d8a4e0db-1095-4fb4-9e10-30c1402c9bbf (old id 151717)
date added to LUP
2007-06-25 10:05:03
date last changed
2017-01-15 04:14:08
@article{d8a4e0db-1095-4fb4-9e10-30c1402c9bbf,
  abstract     = {A model for the web consolidation process in the paper dryer is developed and compared with experimental data for the kraft pulps. The model contains one parameter called the shrinkage factor which is used as the fitting parameter to the experimental data. The shrinkage factor can have a value between zero implying no shrinkage and a value of one which implies that all the liquid volume removed leads to shrinkage. The fitted shrinkage factor is below unity in all experiments with kraft pulps except one. This indicates that not all the removed liquid causes shrinkage. The fact that the shrinkage is higher than for ideal shrinkage (which assumes that all the water removed leads to shrinkage), can be caused by the assumption that the liquid is only located in the non-gaseous phase, and thus spreads over a smaller area than the total surface area. The results for the new model were compared with three previous models from the literature. Taking the whole range of beating degrees into account the new model showed the best agreement with the experimental data.},
  author       = {Baggerud, Erik and Stenström, Stig},
  issn         = {0283-2631},
  language     = {eng},
  number       = {1},
  pages        = {58--63},
  publisher    = {Arbor Publishing AB},
  series       = {Nordic Pulp & Paper Research Journal},
  title        = {Further insight in the web consolidation process - Part III. Modelling of paper shrinkage},
  volume       = {20},
  year         = {2005},
}