1. The main printing methods in the printing and packaging industry are:
Lithographic offset printing (ink color printing), letterpress printing (carton ink printing). Among them, compared with color printing, carton water-based printing has higher strength, lower cost, higher production efficiency (faster delivery), and the overall printing effect is close to that of color printing, which is widely used in the transportation and packaging of products.
2. The main production process of corrugated cardboard box
Corrugated cardboard automatic production line, printing process, post-processing and forming process; the printing work has basically realized the automatic operation of printing, slotting, die-cutting, gluing boxes, and packaging.
Second, the principle of water-based printing
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 a printing press, and the ink is transferred from the anilox roller of the printing press to the printing plate, and then the ink is transferred from the printing plate to the corrugated cardboard box. The front image is obtained by color registration and overlapping, realizing the duplication of the original sample box and reproducing the quality of the original.
2. The principle of four primary colors: red, yellow, blue, and black (strictly speaking, three primary colors: red, yellow, and blue)
Secondary color: the addition of two primary colors: red + yellow = orange (orange-red, orange-yellow);
Red + blue = purple (cherry red, eggplant purple);
Blue + yellow = green (dark green, tender green).