| 摘要 |
[Problem] To provide an ink composition for a coated steel sheet, whereby, when a marking layer produced from the ink composition is provided between two coating layers (i.e., an upper coating layer and a lower coating layer) each formed from a coating agent and provided on the surface of a steel sheet, it becomes possible to prevent the deterioration of adhesion force of the two coating layers at the marking position and therefore it becomes possible to provide such a marking that the upper coating layer cannot come from the lower coating layer at the marking position or the upper coating layer cannot be delaminated from the lower coating layer at the marking position. (Solution) The present invention provides an ink composition for a coated steel sheet, which comprises an organic solvent, a pigment, a dispersant and a resin, said ink composition being characterized in that the resin comprises an acrylic resin and/or a styrene-acrylic resin each having an acid value of 150 mgKOH/g or less and a glass transition temperature ranging from 0 to 55°C. |
