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

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
권호 표지

Effects of Refining and Kneading of Kraft Pulp Fibers on Elongation and Fracture Toughness of Paper

크라프트 펄프 섬유의 다단 고해와 니딩 처리에 따른 종이 신장률 및 파괴인성의 변화

  • Lim, Jong-Hyck (Chungbuk National University, College of Agriculture, Life & Environment Sciences, Dept. of Forest Products & Engineering) ;
  • Chae, Hee-Jae (Chungbuk National University, College of Agriculture, Life & Environment Sciences, Dept. of Forest Products & Engineering) ;
  • Park, Chang-Soon (Chungbuk National University, College of Agriculture, Life & Environment Sciences, Dept. of Forest Products & Engineering) ;
  • Park, Jong-Moon (Chungbuk National University, College of Agriculture, Life & Environment Sciences, Dept. of Forest Products & Engineering)
  • 임종혁 (충북대학교 농업생명환경대학 임산공학과) ;
  • 채희재 (충북대학교 농업생명환경대학 임산공학과) ;
  • 박창순 (충북대학교 농업생명환경대학 임산공학과) ;
  • 박종문 (충북대학교 농업생명환경대학 임산공학과)
  • Received : 2010.11.09
  • Accepted : 2010.12.17
  • Published : 2010.12.30
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Abstract

To increase the fracture toughness of paper made of Sw-BKP, refining and kneading conditions were analyzed. Curl and kink was known to increase the strain at break and the fracture touhness. Sequence of multiple stage beating, beating load and kneading were compared. When we applied a kneading treatment using a kneader at the final step, the most of the fiber transformation such as curl and kink occurred, the more the bulk and air-permeability improved. Physical strength and TEA(tensile energy absorption) were increased higher when kneading treatment before refining than only refining treatment was performed. TEA was increased because of higher elongation. It was found that the highest fracture toughness was obtained when applying the kneading treatment to the fibers in the pre-treatment step rather than in the middle step of beating or in the final step of beating.

Keywords

References

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