Advanced

Some Effects of Press Drying on Paper Properties

Krook, R.; Hollmark, H. and Stenström, Stig LU (1996) In Nordic Pulp & Paper Research Journal 11(3). p.141-145
Abstract
The influence of high temperature pressing on paper properties was investigated. Handsheets made of TMP, bleached and unbleached kraft pulp were pressed in a press simulator with the press surface heated to 300°C. The density, tensile strength and air permeance of the press dried sheets are compared with the values for conventionally pressed and dried reference sheets. The compression behaviour and the dryness increase of the sheets pressed at high temperature were also investigated. It was found that the compressibility of the sheets was significantly increased if the hot surface temperature was increased from 250°C to 100°C. A further increase to 300°C gave only a minor compressibility increase. The increase in density and tensile index... (More)
The influence of high temperature pressing on paper properties was investigated. Handsheets made of TMP, bleached and unbleached kraft pulp were pressed in a press simulator with the press surface heated to 300°C. The density, tensile strength and air permeance of the press dried sheets are compared with the values for conventionally pressed and dried reference sheets. The compression behaviour and the dryness increase of the sheets pressed at high temperature were also investigated. It was found that the compressibility of the sheets was significantly increased if the hot surface temperature was increased from 250°C to 100°C. A further increase to 300°C gave only a minor compressibility increase. The increase in density and tensile index for the press dried sheets is higher for the high yield, low refined sheets than for the bleached kraft sheets. The air permeance of the press dried sheets was significantly lower than that of the conventionally pressed and dried sheets for TMP and for the low refined unbleached kraft. The bleached sheets showed the reverse behaviour and the air permeance was higher after press drying. A hypothesis to explain this is presented. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nordic Pulp & Paper Research Journal
volume
11
issue
3
pages
141 - 145
publisher
Arbor Publishing AB
external identifiers
  • scopus:0000879101
ISSN
0283-2631
DOI
10.3183/NPPRJ-1996-11-03-p141-145
language
English
LU publication?
yes
id
0d61a49e-d339-493d-be6b-cd9535f1afd5 (old id 3918248)
date added to LUP
2013-07-08 09:57:26
date last changed
2017-01-01 06:58:19
@article{0d61a49e-d339-493d-be6b-cd9535f1afd5,
  abstract     = {The influence of high temperature pressing on paper properties was investigated. Handsheets made of TMP, bleached and unbleached kraft pulp were pressed in a press simulator with the press surface heated to 300°C. The density, tensile strength and air permeance of the press dried sheets are compared with the values for conventionally pressed and dried reference sheets. The compression behaviour and the dryness increase of the sheets pressed at high temperature were also investigated. It was found that the compressibility of the sheets was significantly increased if the hot surface temperature was increased from 250°C to 100°C. A further increase to 300°C gave only a minor compressibility increase. The increase in density and tensile index for the press dried sheets is higher for the high yield, low refined sheets than for the bleached kraft sheets. The air permeance of the press dried sheets was significantly lower than that of the conventionally pressed and dried sheets for TMP and for the low refined unbleached kraft. The bleached sheets showed the reverse behaviour and the air permeance was higher after press drying. A hypothesis to explain this is presented.},
  author       = {Krook, R. and Hollmark, H. and Stenström, Stig},
  issn         = {0283-2631},
  language     = {eng},
  number       = {3},
  pages        = {141--145},
  publisher    = {Arbor Publishing AB},
  series       = {Nordic Pulp & Paper Research Journal},
  title        = {Some Effects of Press Drying on Paper Properties},
  url          = {http://dx.doi.org/10.3183/NPPRJ-1996-11-03-p141-145},
  volume       = {11},
  year         = {1996},
}