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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Use of Calcium Carbonate for Improving Solid Content of KOCC Wet Web

탄산칼슘 적용에 의한 KOCC 지필의 고형분 증대

  • Hwang, In-Young (Dept. of Bio-based Materials, Chungnam National University) ;
  • Ji, Sung-Gil (Dept. of Bio-based Materials, Chungnam National University) ;
  • Seo, Yung-Bum (Dept. of Bio-based Materials, Chungnam National University)
  • 황인영 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 지성길 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 서영범 (충남대학교 농업생명과학대학 환경소재공학과)
  • Received : 2013.11.08
  • Accepted : 2013.12.10
  • Published : 2013.12.30
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Abstract

For the manufacture of linerboard with 100% KOCC, we tried to increase the solid content of wet web by employing GCC (grounded calcium carbonate) in the fiber furnish to save drying energy. Three different diameters of GCC, namely, 5, 10, and $35{\mu}m$, were used. To complement the strength loss by the addition of GCC, cationic starch and refining treatment were tried. It was found that the addition of $10-35{\mu}m$ dia. GCC to KOCC for $180g/m^2$ basis weight sheets increased the solid content of the furnish about 1-1.5% with better bulk and drainage properties. The loss of strength properties were compensated by the application of cationic starch and/or refining process to the KOCC furnish. The dia. of GCC of $35{\mu}m$ was, however, too large to make smooth surface of the sample sheet. So, the optimization process was required before implementing the results to the mill by selecting proper diameter and shape of the calcium carbonate.

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References

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