Effect of inferior coating on UV flatbed nozzle
In the long-term work of the UV tablet, there will be some minor problems in the nozzle. To eliminate the improper operation and maintenance, another factor is the use of inferior ink and inferior coating. The inferior ink will directly damage the nozzle. The damage of the inferior coating on the nozzle is indirect, and there may be no problems in a short time, but over time, a series of problems are revealed. The role of UV coating is to increase the adhesion. The adhesion of inferior coatings will be greatly reduced. In particular, the quality of products such as signs and billboards that need to be placed outdoors will be degraded, which will directly affect the printing color. Today, Le Cai Technology gives you a summary of the damage of inferior coatings on UV flatbed nozzles:
1: Inferior coatings have a slow drying rate and are easy to absorb dust;
Generally speaking, the speed of the coating is best in 3~5 minutes. If it exceeds 5 minutes, the surface of the product will be easy to collect dust after spraying. When printing, the dust will easily affect the printing effect of the nozzle, and the surface will also float. Fly to the nozzle, and other conditions such as nozzle blockage will occur over time.
2: Inferior coating viscosity, poor transmittance, affecting adhesion;
The adhesion of the inferior coating will be greatly reduced, although it will not directly damage the nozzle, but it will reduce the printing effect. The speed of the ink drying will also decrease, and for the UV tablet, the loss of the nozzle will also be increased from some angles.
3: Poor leveling of poor quality coating
Leveling means that it can be automatically spread after spraying on the surface of the product to make the surface of the product smooth and smooth. If the leveling property is poor, the surface of the product will be uneven. If the unevenness is too large, the nozzle of the UV flatbed will be scraped during the printing process, causing more serious damage.
It is recommended that you do not want to be cheap when choosing a UV coating, choose a quality coating that is quality-passed, which not only ensures the printing effect, but also makes the life of the UV tablet longer.
