| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an ink composition for offset sheet-fed printing which can reduce back cylinder print by an impression cylinder of an offset printing machine while maintaining friction resistance of the ink printed onto paper by selecting the type and adding amount of wax in an offset sheet-fed printing. <P>SOLUTION: The ink composition for offset sheet printing includes a wax, a binder resin, vegetable oils, a petroleum solvent, and a pigment, wherein the wax is a polytetrafluoroethylene wax having an average particle diameter of 3.5-4.5μm, a melting point of 290-340°C, and sphericity of 0.2-0.7; and a polyethylene wax having an average particle diameter of 1.0-4.0μm, a melting point of 100-200°C, and sphericity of 0.9-1.0. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
