As a common packaging product in people’s daily life, packaging and printing have different materials and printing types. Each printing material and type has its own characteristics, so what types are there? Changsha Packaging and Printing Factory takes paper products as an example to answer you about the types of paper packaging and printing
One of the most common classification methods, according to the printing plate, the printing method is divided into letterpress printing, gravure printing, offset printing and stencil printing. The graphics and text on the gravure printing plate are raised. The printing principle is similar to that of a seal. Wood board printing. Intaglio printing is the opposite of letterpress printing. The graphics and text of the printing plate are lower than the blank part. In lithographic printing, the graphic part and the blank part of the printing plate are almost on the same plane. The printing method uses the principle of immiscibility between oil and water. Orifice printing is the hole in the graphic part of the printing plate, and the ink is transferred to the printing plate through the hole. On the surface of the object, common stencil printing includes hollow plate and silk screen.
Letterpress printing, gravure printing, and screen printing are mainly direct printing. Changsha packaging and printing plants are mostly direct printing. Direct printing and indirect printing are distinguished by whether the printing plate is in contact with the substrate. A large number of packaging box printing, picture album printing, etc. Direct printing and indirect printing are printing methods in which the ink of the printing plate is transferred to the substrate through a blanket. Direct printing also needs to use a pre-made printing plate to print on the substrate. For small package printing, custom picture albums, etc., you can use a computer-driven print head (or print head) to print directly on the substrate. Such as digital printing.
Printing can also be divided into monochrome printing and color printing according to the number of colors. Monochrome printing is mostly used for notebook printing, book printing, and color printing is multi-color printing. On the basis of the primary color separation plate, the pigment subtractive color mixing is used to make the primary color The plate is reprinted on the same material to be printed, and the commonly said CMYK four-color printing mainly adopts this printing method. Some packaging product packaging manufacturers will use four colors plus one or more spot colors to ensure that users are satisfied with colors.