According to the small edition of Tianjin Carton Factory, corrugated boxes are rigid paper containers made of corrugated cardboard。For more than half a century, corrugated boxes have gradually replaced wooden boxes and other transport packaging containers with their superior performance and good processing performance, and have become the main force of transport packaging。In addition to protecting goods, facilitating warehousing and transportation, it also plays a role in beautifying goods and promoting goods。Corrugated boxes belong to green environmental protection products, which are conducive to environmental protection and conducive to loading and unloading and transportation。

　　1. Basic information

　　1, printing and packaging industry printing methods are mainly:

　　Lithographic offset printing (ink color printing), letterpress printing (carton ink printing)。Among them, waterborne carton printing has high strength, low cost and high production efficiency (fast delivery) compared with color printing, and the overall printing effect is close to color printing, which is widely used in the transportation and packaging of products。

　　2, corrugated box main production process

　　Corrugated board automatic production line, printing process, post-processing and molding process;At present, the printing work has basically realized the automatic operation of printing, slotting, die-cutting, gluing box and packaging。

　　Second, water-based printing principle

　　1, water-based printing belongs to additive color printing。The color original is made into a reverse image by electronic color separation, and then printed by the printing press, transferring the ink from the printing press mesh roller to the printing plate, and then transferring the ink from the printing plate to the corrugated board。The positive image can be obtained by overpainting and overlapping colors, and the copy of the original sample box can be realized and the quality of the original manuscript can be reproduced。

　　2, the principle of the four primary colors: red, yellow, blue, black (strictly speaking, the three primary colors: red, yellow, blue)

　　Intermediate color: two primary colors added together: red + yellow = orange (orange-red, orange-yellow);

　　Red + blue = purple (cherry red, eggplant);

　　Blue + yellow = green (dark green, light green)。