LIQUID PRINTING INK AND PRINTED MATTER

To provide liquid printing ink which is excellent in printing ability when performing printing on a high pressure method low density polyethylene layer laminated on paper, and comprises wear resistance, scratch resistance, adhesion, heat resistance, temporal stability and post-processing suitability.SOLUTION: There is provided liquid printing ink comprising, as a main binder resin, a vinyl chloride-vinyl acetate copolymer resin, and containing an organic solvent. The liquid printing ink satisfies following conditions: (1) the liquid printing ink includes a rosin-based resin by 1-15 mass% with respect to an ink total solid; (2) the liquid printing ink includes a hydrocarbon based wax by 0.1-5 mass% with respect to the ink total solid; (3) the liquid printing ink includes a chelate compound by 0.05-10 mass% with respect to the ink total solid; and (4) the liquid printing ink includes an organic solvent whose boiling point is 54-250°C, as the organic solvent.SELECTED DRAWING: None 【課題】紙にラミネートした高圧法低密度ポリエチレン層上へ印刷する際の印刷適性に優れ、耐摩耗性、耐スクラッチ性、密着性、耐熱性、経時安定性、後加工適性を兼備したリキッド印刷インキを提供する。【解決手段】塩化ビニル－酢酸ビニル共重合樹脂を主バインダー樹脂とし有機溶剤を含有する以下を満たすリキッド印刷インキ。（１）ロジン系樹脂をインキ全固形分に対し１～１５質量％含有する。（２）炭化水素系ワックスを、インキ全固形分に対し０．１～５質量％含有する。（３）キレート化合物をインキ全固形分に対し０．０５～１０質量％含有する。（４）有機溶剤として、沸点が ５４～２５０℃の範囲の有機溶剤を含有する。【選択図】なし