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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Analysis of Paper Qualities and Forming Process at Varied Mixing Ratios of Different Kinds of Recovered Paper

이종 폐지 혼합 비율에 따른 종이 품질 및 초지 공정 변화 분석

  • Choi, Do-Chim (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Lee, Kwang Seob (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Kim, Chang Keun (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Cho, Byoung-Uk (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Ryu, Jeong-Yong (Kangwon National University Changgang institute of Paper Science & Technology)
  • Received : 2014.05.13
  • Accepted : 2014.05.26
  • Published : 2014.06.30
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Abstract

The kind and the mixing ratio of recovered papers would affect the quality of final recycled paper. In this study, effects of the mixing ratio of various domestic recycled papers (old news print (ONP), old corrugated container (OCC) and coated paper (CP)) on variations in physical properties of paper and its productivity were investigated. When the mixing ratio of CP grade increased, the freeness (CSF) of recycled pulp was increased while paper strength and white water turbidity was decreased. Paper strength was decreased as the percentage of OCC was higher than ONP. When ONP was mixed with OCC, no adverse effect was observed except the increased drainage resistance. It is expected that these results could be utilized as fundamental data to establish regulations for the recovered paper grades according to mixing ratios of different kinds of them.

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References

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