Journal of the Korean Graphic Arts Communication Society (한국인쇄학회지)

The Korean Graphic Arts Communication Society (한국인쇄학회)
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A Study on Rheology Property and Characteristics of Thermal-curable Ag Paste for Polymer Gravure Printing

Polymer Gravure Printing용 열경화형 Ag Paste의 물성과 레올로지 특성 연구

  • Ku, Tae-Hee (Dept. of Graphic Arts Information, College of Engineering, Pukyong National University) ;
  • Nam, Su-Yong (Dept. of Graphic Arts Information, College of Engineering, Pukyong National University) ;
  • Kim, Sung-Bin (Dept. of Graphic Arts Information, College of Engineering, Pukyong National University)
  • 구태희 (부경대학교 공과대학 인쇄공학과) ;
  • 남수용 (부경대학교 공과대학 인쇄공학과) ;
  • 김성빈 (부경대학교 공과대학 인쇄공학과)
  • Received : 2012.08.03
  • Accepted : 2012.08.24
  • Published : 2012.09.01
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Abstract

In this experiment, we have manufactured thermal-curable silver pastes for direct printing. And to enhance conductivity, printability, adhesion and hardness during polymer direct-gravure prints, we have manufactured Ag pastes by adding variety of filter contents. Then we have investigated characteristics of rheology in paste according to the gravure printability and the properties of printed conductive patterns. Depending on a variety of Ag powder, there was a big difference in sharpness of printed pattern. And also by the use of carbon, there was a big difference in amount of solvent used, conductivity and in hardness. We could improve doctoring and the sharpness of a pattern by adding Ag paste in carbon particle, but as we have used nano-sized particle, there was an increase in the amount of solvent used and also we have found out that it gives a bad effect as adhesive and hardness becomes weaker. Even though Ag particle has the same spherical shape, the surface treatments could differ from one another. And by the appropriate choice and with the suitable combination of Ag powder, excellent printability and conductivity could be obtained.

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