Journal of the Korean Graphic Arts Communication Society (한국인쇄학회지)

The Korean Graphic Arts Communication Society (한국인쇄학회)
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A Study on the Physical Properties according to Varnish Cooking Conditions of Phenolic Modified Rosin Ester

로진변성 페놀수지의 Varnish 제조조건에 따른 물성 변화에 관한 연구

  • Jung, Soon-Kie (Kwang Myung INK CO., Ltd) ;
  • Kim, Sung-Bin (Division of Image & Information, College of Engineering, Pukyong National University)
  • 정순기 (광명잉크제조(주)) ;
  • 김성빈 (부경대학교 공과대학 화상정보공학부)
  • Published : 2006.12.01
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Abstract

The Lithographic ink is composed of pigment, vehicle and additives. In especially, the vehicle is the most important element and consist of vegetable oils, mineral oils and resins. Varnishes have to resist certain forms of chemical and physical attack during ink manufacturing process and printing process So this varnish cooking is very important. In this paper, effects of cooking conditions of varnish using phenolic modified rosin ester on physical properties of the vehicle were studied. The varnish cooked according to temperature and time were compared in order of average molecular weight by the GPC method. and the rheological properties were found by rotational rheometer. And the emulsion behavior were compared by high speed emulsification tester which were set on 1200 rpm and $40^{\circ}C$ temperature (Novomatics Lithotronic). We displayed viscosity against tack(Inkometer Thwing-Albert M-106) by diagram.

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