UV curing lamps are used more on the unit type flexo printing machine, but less used on the satellite type flexo printing machine. The structure of the printing department of the satellite type flexo printing machine is different from that of the unit type. All the color groups are surrounded by the central embossing roller, and the structure is very compact.
The most important point of satellite flexo printing machine color room UV application is to protect it from light. When the UV curing lamp is working, the angle and gap between the UV curing lamp and the central embossing roller should be controlled, and the UV light should not be emitted from the gap, and the light should be directly and vertically irradiated on the substrate close to the central embossing roller.物surface. Because of the short distance between satellite color groups, when printing with a large perimeter sleeve, UV light is likely to leak on the adjacent printing plate, which will directly cause the ink to be cured on the resin plate; or light leaks to the network of the adjacent color group. On the grain roller, the ink in the mesh of the anilox roller undergoes a curing reaction, causing part or all of the ink to be unable to transfer, and the printing color becomes lighter or even missed. If this situation is serious, it will cause irreversible damage to the resin plate and the anilox roller.
For some dual curing reactions, the humidity of the ink must also be controlled. Because in the second stage of reaction, if the humidity of the ink is too high, it will directly affect the further reaction of the cations, and then affect the curing quality, causing the machine to fail to speed up. Therefore, in some applications, it is necessary to add a dehumidification device near the UV curing lamp, that is, use hot air to blow the ink to reduce the humidity in the ink.
Shenzhen Height-LED specializes in the production and sales of UVLED point light sources, UVLED line light sources, UVLED surface light sources, UVLED curing machines, UVLED curing ovens, dispensing, spraying, spraying, automation equipment and other products. It has a professional team and rich experience. Suitable UVLED curing system can be customized for customers, welcome to consult.
