Advantages and disadvantages of UV varnish machine (coating machine, roller coating machine)!
一. Roll coating machine
Advantages of roller coating machine:
1. The solved board has good uniformity, and there is no paint stacking at the front, back, left and right
2. It can be almost the same as the actual effect of spray coating, but the thickness of the paint is greatly reduced
3. The rubber wheel can be disassembled and positioned accurately, and the height width ratio is calculated with a counter
4. The paint roller is washable and has good effect of inking
5. Time saving, energy saving, high efficiency and good environmental protection
Defects of roller coating machine:
1. Roller printing is very easy to occur, resulting in wavy stripes of raw materials in the oblique view of the light source
2. The thickness of roll paint is relatively thin, and the chromaticity is weakened
3. The speed is slow
4. It's very easy to make errors when rolling long plates
二、 Coating machine
Features of coating machine:
1. Double shower head can be used for coating of component coatings.
2. The coating appearance is very good and the film thickness is even.
3. The practical operation is simple, the work is good, can carry out the practical operation of closed protection, good labor protection.
4. In the whole process of coating, only a small part of organic solvent evaporates in the coating cycle.
5. High painting efficiency, low labor efficiency, can produce continuous practical operation of the production line.
6. The car fuel tank has the function of heating up, and UV printing ink condenses due to the temperature in winter
Defects of coating machine:
1. High residual oil at the beginning and end, at least 100-300kg varnish at the beginning and end
2. Long demulsification time, up and down in 1 hour
3. High cleanliness level of raw materials is required
