PRINTING INK COMPOSITION FOR LAMINATE AND EASY-TO-TEAR LAMINATE

PROBLEM TO BE SOLVED: To provide a printing ink composition for a laminate, which can exhibit good color developing property and easily tearing property, and an easy-to-tear laminate produced by printing a substrate film with the printing ink for a laminate, then applying an adhesive and laminating a sealant film.SOLUTION: The printing ink composition for a laminate comprises a pigment, a binder resin, a polyfunctional isocyanate compound as a curing agent, and an organic solvent. The binder resin is a polyurethane resin having a reactive group that can react with an isocyanate group of the polyfunctional isocyanate compound. A solid content ratio of the polyurethane resin to the curing agent satisfies (polyurethane resin):(curing agent)=1:(0.35 to 0.9).SELECTED DRAWING: None 【課題】良好な発色性及び易引き裂き性を発揮できるラミネート用印刷インキ組成物、及び基材フィルムに該ラミネート用印刷インキを印刷後、接着剤を塗布し、シーラントフィルムを積層してなる易引き裂き性積層体の提供。【解決手段】顔料、バインダー樹脂、硬化剤として多官能イソシアネート化合物、有機溶剤を含有するラミネート用印刷インキ組成物であって、該バインダー樹脂が、該多官能イソシアネート化合物のイソシアネート基と反応しうる反応基を有するポリウレタン樹脂であり、該ポリウレタン樹脂と該硬化剤の固形分含有比率が、ポリウレタン樹脂：硬化剤＝１：０．３５〜０．９であるラミネート用印刷インキ組成物。【選択図】なし