Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Change of Dimensional Stability and Dip Elongation of Handsheets Depending on Wet Pressing

습부압착에 따른 수초지의 치수안정성과 침지신장성의 변화

  • Park, Chang-Soon (Ahlstrom Korea) ;
  • Lee, Jin-Ho (Korea Research Institute of Chemical Technology, Chemical Biotechnology Research Center) ;
  • Kil, Jung-Ha (KOMSCO, Technical Research Institute) ;
  • Park, Jong-Moon (Chungbuk National University, College of Agriculture, Life & Environment Science, Department of Forest Products & Engineering)
  • 박창순 (한국 알스트롬 기술연구소) ;
  • 이진호 (한국화학연구원 산업바이오화학연구센터) ;
  • 길정하 (한국조폐공사 기술연구원) ;
  • 박종문 (충북대학교 농업생명환경대학 임산공학과)
  • Received : 2011.11.11
  • Accepted : 2011.12.21
  • Published : 2011.12.30
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Abstract

One of the main drawbacks of wood fibers based composite materials are their tendency to swell due to moisture uptake in wet and moist environments. The main contribution to the hygroexpansion usually comes from the hydrophilic wood fibers. Recent trend toward the high speed printing, copying, and precision converting precesses demands a high level of dimensional stability under various environmental conditions. The purpose of this study was to investigate the dimensional stability of softwood bleached kraft pulp handsheets depending on wet pressing conditions. By increasing the number of wet pressing, dimensional stability was decreased because of increased fiber-to-fiber bonding. Hygroexpansion of handsheets had a linear relationship with the relative bonded area and equilibrium moisture contents. Dip elongation was decreased when the number of wet pressing was increased because of increased fiber-to-fiber bonding to resist low load in water.

Keywords

References

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