The printing of plastic boxes is inseparable from ink, and ink has the most important position in the whole packaging printing industry.

Printed ink production is divided into several parts: colorants and binders plus some adjuvants. Colorants include pigments and dyes, organic pigments and bright colors, strong tinting strength, fast drying, and wide application in inks. The binder is one of the main components of the ink, and is used as a medium for dispersing the coloring material and the auxiliary material, and is prepared by dissolving a small amount of natural resin, synthetic resin, cellulose, rubber derivative or the like in a drying oil or solvent to make the ink. After printing, a uniform thin layer is formed, and after drying, a film layer having a certain strength is formed, and the pigment is protected from being detached.

The binder has a great influence on the printability, brightness, and fixing speed of the ink, and the printing effect. Therefore, selecting a suitable binder is one of the keys to ensuring good printing, and it can be based on packaging materials, printing requirements, etc. Different, adjust the composition and ratio of the binder at any time. These two are important components of the ink.