What is the reason for the color coating plate?

1. in the process of color coated sheet production, export inspection dust mirror, there are some rollers with dust, dust will directly affect the surface quality of color coated sheet, perhaps when the beginning of the performance does not come out, but once for a long time, or in the sun exposure will appear under burst paint phenomenon.

2. also the passivation plate temperature production process regulation is 2 hour inspection, the reason is the staff did not keep track of the temperature of the passivation plate at the time of inspection. In particular, in the winter, the temperature changes within 2 hours are relatively large, which will eventually lead to the aging of color coating plates, and the phenomenon of scratching the lacquer will occur when the type is pressed.

Add passivation liquid first and then add water when 3. grooves. Because of the density of the passivation solution, such as the density of the passivation fluid is higher than that of the water, it will cause uneven mixing of raw materials, and there will be a bad adhesion between the passivation layer and the substrate.