There are a variety of printing methods for UV self-adhesive label paper, each of which has its own unique characteristics and application occasions. Common printing methods include:
Letterpress: Suitable for printing labels with field or general patterns, which can be printed in simple color mesh. Letterpress machines usually require specific equipment adjustments, such as increased tension control systems and film surface treatment units.Offset printing: known for its fine graphics and rich layers, suitable for mass printing. Offset printing equipment can be used in one machine, but for non-absorbent film materials, UV curing devices may be required.Flexo printing: The machine structure is simple, the cost is low, and the printing quality can be comparable to offset printing and gravure printing. Flexo printing using water-based ink and UV ink, environmental protection and does not pollute the environment. Suitable for printing high quality labels.Gravure: The use of short ink path ink delivery system, reel printing, high degree of automation, the use of solvent-based ink, ink layer drying quickly, is the first choice for film printing. Suitable for mass label production.Screen printing: wide adaptability, characterized by strong ink color, strong three-dimensional sense, can use UV ink to print film products. However, the overprinting accuracy is not high, and it is not suitable for the film label production equipment supporting the production line.When selecting the printing method of UV self-adhesive label paper, factors such as the design requirements of the label, material characteristics and production efficiency should be considered to choose the most appropriate printing technology.