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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Effect of Dewaxing Ratio of Beeswax-treated Hanji by Heat and Pressure Method on Aging Behavior of Dewaxed Hanji

가온 가압법에 의한 밀랍도포한지의 탈랍율이 탈랍지의 열화 거동에 미치는 영향

  • Cho, Byoung-Uk (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Choi, Do-Chim (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Jo, Byoung-Muk (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University)
  • 조병욱 (강원대학교, 산림환경과학대학, 제지공학과) ;
  • 최도침 (강원대학교, 산림환경과학대학, 제지공학과) ;
  • 조병묵 (강원대학교, 산림환경과학대학, 제지공학과)
  • Received : 2012.05.15
  • Accepted : 2012.06.04
  • Published : 2012.06.30
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Abstract

The optimum dewaxing ratio in dewaxing treatment by the heat and pressure method was investigated by considering aging stability of dewaxed Hanji. Commercial Hanji was coated with beeswax and thermally aged at $150^{\circ}C$ for 24 hours. Then it was dewaxed using the laboratory sheet press equipped with hot plates on both top and bottom sides. Dewaxing ratio was controlled by pressing temperature and time. Four type of dewaxed Hanji samples with different dewaxing ratio were prepared and thermally aged at $150^{\circ}C$. Then the aging stability of dewaxed Hanji samples was evaluated in terms of optical and strength properties. It was found that the aging stability of dewaxed Hanji was superior with higher dewaxing ratio. The result concluded that, in the aspect of aging stability, the coated beeswax in beeswax-treated Hanji shall be completely removed if the coated wax would be dewaxed.

Keywords

References

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