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Control of Precalendering to Reduce Surface Roughening of Paper by Quantifying Deformation of Paper Structure after Water Absorption
Seong Min Chin12
,
Hye Jung Youn1†
1Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-Gu, Seoul, 08826
2Uduk Advanced Materials Co. Ltd., Yeoju-Si, Gyeonggi-do, 12616
†Corresponding author: E-Mail: page94@snu.ac.kr
30 April 2019. pp. 58-67
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Abstract

The surface of precalendered paper would deteriorate due to surface roughening phenomenon. It is necessary to investigate the correlation between densification by calendering under different conditions and surface roughening by water absorption. The linear pressure and temperature of a laboratory calender were controlled to change the structure of a BCTMP paper. After calendering, a fluorescent dye solution was applied to the calendered sheet. Water penetration was visualized by confocal laser scanning microscopy and quantified by image analysis. Increased absorption and a higher water penetration depth led to severe surface roughening. When the sheet was calendered at low temperature and under high pressure, reversible changes in structural and surface properties were observed. However, irreversible changes in structural and surface properties were observed with heat treatment. Deformation and densification by calendering at higher temperatures could reduce surface roughening.

Keywords
Surface roughening
calendering
deformation
densification
moistening
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Information
  • Publisher :Korea Technical Association of The Pulp and Paper Industry
  • Publisher(Ko) :한국펄프종이공학회
  • Journal Title :Journal of Korea TAPPI
  • Journal Title(Ko) :펄프종이기술
  • Volume : 51
  • No :2
  • Pages :58-67
  • Received Date : 2019-03-11
  • Revised Date : 2019-04-08
  • Accepted Date : 2019-04-15
  • DOI :https://doi.org/10.7584/JKTAPPI.2019.04.51.2.58
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