Application of Cationic PVAm - Anionic PAM Dry Strength Aids System on a Kraft Paper Mill

양이온성 PVAm - 음이온성 PAM 건조지력증강제 시스템의 크라프트지 적용 사례

  • Cho, Byoung-Uk (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Ryu, Jeong-Yong (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology(KRICT)) ;
  • Son, Dong-Jin (Eyang Chemical Co., Ltd.) ;
  • Song, Bong-Keun (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology(KRICT))
  • 조병욱 (강원대학교, 산림환경과학대학, 제지공학과) ;
  • 류정용 (한국화학연구원, 산업바이오화학연구센터) ;
  • 손동진 (이양화학(주)) ;
  • 송봉근 (한국화학연구원, 산업바이오화학연구센터)
  • Received : 2010.08.30
  • Accepted : 2010.09.23
  • Published : 2010.09.30

Abstract

A mill trial was performed in a kraft paper mill in order to evaluate the possibility of utilizing dual polymer dry strength aids system consisting of cationic PVAm and anionic PAM. It was found that the cationic PVAm - anionic PAM dry strength additives can improve paper strength without significantly disturbing the stability of the kraft papermaking process when virgin UKP was used as a furnish. Tensile strength (25.3% in machine direction, 48.4% in cross machine direction), elongation of paper (31.6%, 15.6%) and tensile energy absorption (48%, 54%) were improved. Air permeability of the kraft paper was improved as well (22%). Tear strength was decreased with PVAm dry strength aids system, but it can be compensated with decreasing refining degree. In addition, the mill trial results indicate that highly air permeable kraft sack paper can be produced by the addition of PVAm dry strength agents at the stock with reduced freeness.

Keywords

References

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