The flexographic printing machine uses a fluid ink which is more fluid, and the ink is transferred from the ink fountain roller and the anilox roller to the graphic portion of the printing plate and inked, and then the printing pressure is applied by the pressure roller to the printing plate. The ink is transferred to the substrate and the printing process is completed on the dried side. At present, the quality of flexographic printing presses is no less than offset printing and even has its own unique place. The printing process has the advantages of simple machine structure, low cost, comparable printing quality to offset printing and gravure printing, and has the advantage of thicker ink layer than offset printing products, and the flexographic printing machine uses water-based ink and UV ink to not pollute the environment. . However, due to the large elasticity of the flexographic printing machine, the tone reproducibility is different from that of the gravure and the ordinary letterpress. The high-light to mid-tone dot of the flexographic printing is enlarged, the printing contrast is small, and the high-light layer is prone to faults. In the case of graphic labeling, in order to compensate for the layer defects, the highlight part can adopt the FM network point, and the tone adjustment screen is called in the dark tone or the middle to improve the quality. Label printers without flexographic presses can introduce laminated narrow-format flexo presses dedicated to self-adhesive label printing, which is suitable for film label printing. Since the flexographic printing press adopts circular die-cutting, the die-cutting roller has high price and long production cycle, and is only suitable for the long-running work, and is not suitable for the characteristics of the domestic self-adhesive label short-running demand. However, it is an easy-to-transform label printing equipment that can work with the film slitting and sealing process.
In addition, from the environmental point of view, flexographic printing is the most environmentally friendly printing process, and continues to tend to use water-based and 78 inks in flexographic printing, which will continue to have competitive advantages in many fields for many years to come. .
Its flexographic features:
First, flexographic printing has the characteristics of low scrap rate, low cost, and minimal waste;
Second, the noise is small, the speed is fast, and the work efficiency is high;
Third, flexographic printing can take into account the pictures, texts, pictures and texts, clear graphics, and luster. Durable precision overprint accuracy;
Fourth, regardless of the size of the carton, the thickness is formed in one piece;
Fifth, the flexographic printing has a high flatness, short loading time and fast speed. Fast, low cost change orders;
Sixth, the flexographic printing machine has a simple structure and adopts a short ink inking system with low investment, low consumption, good economic benefit, large output and high return;
Seventh, it is an environmentally-friendly and energy-saving printing method, providing technical support for the upgrading of carton packaging.
Eighth, its shortcoming is that its quality limitations, less than offset and gravure.
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