| 摘要 |
<p>Provided is an organic solvent-based concentrated ink composition for gravure printing, which has good print density, printability and lamination suitability even if used in gravure printing wherein a plate cylinder that is reduced in the thickness is used. An organic solvent-based concentrated ink composition for gravure printing, which is mainly composed of an organic pigment and/or an inorganic pigment, a polyurethane resin and an organic solvent, and which satisfies one of the conditions 1-3 described below. This organic solvent-based concentrated ink composition for gravure printing has a viscosity of 10-1,000 mPa.s/25°C, a viscosity during printing of 12-23 seconds/25°C as measured using a #3 Zahn cup, and a viscosity of 100-500 mPa.s/25°C in cases where 30 parts by mass of a polyurethane resin is dissolved in 70 parts by mass of an organic solvent. Condition 1: 5-20% by mass of an organic pigment, 3-20% by mass of a polyurethane resin, and 60-200 parts by mass of the polyurethane resin per 100 parts by mass of the organic pigment Condition 2: 5-70% by mass of an inorganic pigment, 3-20% by mass of a polyurethane resin, and 5-60 parts by mass of the polyurethane resin per 100 parts by mass of the inorganic pigment Condition 3: 5-20% by mass of an organic pigment, 0 < inorganic pigment (mass)/organic pigment (mass) < 7.0, 3-20% by mass of a polyurethane resin, and 20-200 parts by mass of the polyurethane resin per 100 parts by mass of all the pigments</p> |
