Pure plastic gravure printing the yellow ink and its preparation method

The present invention relates to a pure plastic gravure printing the yellow ink and its preparation method, belonging to the packaging field of printing technology. The ink comprising the composition and the weight ratio: 50 to 56 parts based inks, from 25 to 29 parts by letdown resin, 7 to 9 parts deionized water and 9 parts of polyvinyl alcohol aqueous solution to 15; wherein-based ink composition and weight proportions: 25 to 30 parts of yellow pigment, 30 to 35 parts of aqueous acrylic resin, 34 to 38 parts of deionized water, defoamer 1 to 2, 1 to 2 parts dispersing agent and the surfactant from 0.5 to 1.5 parts; the composition and the weight ratio of the aqueous solution of polyvinyl alcohol: 5 to 10 parts of polyvinyl alcohol, deionized water, 90 to 95 parts. The ink of the present invention, the production process is simple, good adhesion, fast drying, good leveling, the printing speed in the range of 100 ~ 200m / min, good printability and print performance; and low costs, reduce environmental pollution of the atmosphere , safety and environmental protection.