The Comparison of Deinkability of Domestic, Japanese and Australian Old Newsprint

열화기간에 따른 국내 및 수입 신문고지의 탈묵성 비교

  • Kim, Yong-Sek (Department of Forest Resources, Korea University) ;
  • An, Byoung-Jun (Department of Forest Resources, Korea University) ;
  • Paik, Ki-Hyon (Department of Forest Resources, Korea University)
  • 김용석 (고려대학교 산림자원학과) ;
  • 안병준 (고려대학교 산림자원학과) ;
  • 백기현 (고려대학교 산림자원학과)
  • Received : 1998.10.12
  • Accepted : 1998.12.10
  • Published : 1999.04.10

Abstract

In this paper, to investigate the deinkability of domestic and Australian old newsprint according to aging time, two types of newsprint printed with commercial offset ink in domestic(K; Korean newsprint, C; Canadian newsprint), Japanase(J) and Australian(A) old newsprint were aged naturally for 10, 30, 90, 180 days, and then yield, brightness, fiber length, and physical properties (tensile index, tear index, burst index) were evaluated according to aging time. As the aging time increased, the yield and brightness of respective samples decreased. The brightness and yield were decreased in the order of A, K, J and C. The brightness and strength of newsprint varied according to the ink formulation and kinds of pulp and wood. The decreasing order of strength is subsequently J, K, C and A.

Keywords

Deinking;Aging Time;Offset Ink;Fiber Length;Brightness;Yield

Acknowledgement

Supported by : 학술진흥재단

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