FLEXIBLE PACKAGING LAMINATE PRINTING INK COMPOSITION

To provide a flexible packaging laminate printing ink composition that has excellent long-term stability, allows an increased content of a plant-derived material to be used, and can improve adhesiveness to films including various films and various high-function barrier films.SOLUTION: Provided is a flexible packaging laminate printing ink composition, which is a printing ink composition for a laminate, containing a pigment, a binder resin, and an organic solvent, wherein the binder resin contains a polyurethane resin (A) having a urethane group concentration of 0.3 to 2.4 mmol/g and containing, at each terminus, a urea bond having an amino group, and a polyurethane resin (B) having a urethane group concentration of 2.0 to 6.0 mmol/g and containing no urea bond, the mass ratio between the polyurethane resin (A) and the polyurethane resin (B) being 95:5 to 50:50.SELECTED DRAWING: None 【課題】経時安定性に優れ、植物由来の材料をさらに高い含有量となるように採用でき、かつ各種フィルム及び各種高機能バリア性フィルム等のフィルムに対する密着性の向上ができる軟包装用ラミネート印刷インキ組成物の提供。【解決手段】顔料、バインダー樹脂、有機溶剤を含むラミネート用印刷インキ組成物であって、バインダー樹脂が、ウレタン基濃度０．３〜２．４ｍｍｏｌ／ｇであり、末端にアミノ基を有するウレア結合を有するポリウレタン樹脂（Ａ）と、ウレタン基濃度が２．０〜６．０ｍｍｏｌ／ｇであるウレア結合を有しないポリウレタン樹脂（Ｂ）とを含有し、且つポリウレタン樹脂（Ａ）とポリウレタン樹脂（Ｂ）の質量比率が９５：５〜５０：５０である軟包装用ラミネート印刷インキ組成物。【選択図】なし