Uneven or no mixing of paint, film thickness, viscosity, plate temperature, cooling water, curing furnace and paint of color coated plate will cause color difference on the surface of stainless steel color coating. It refers to the color difference (light color) of paint in different batches or barrels. Paint pigments and fillers are different. When the new batch number or paint is replaced, it starts to extend from the feeding port to the return port, resulting in color difference. It extends from one side of the feeding port to the direction of the return port, showing a strip distribution and gradually becoming wider. Solution: find the cause from the paint itself. Compare the scraper of the laboratory with two batches of one plate.

Color coated plate film thickness refers to the color difference caused by different paint film thickness. The viscosity of the coating and the pressure change between the coating rollers. It refers to different stainless steel color coating rolls or both sides of the same stainless steel color coating roll. There is no obvious change, but there is a big difference between the volumes. Solution: strictly control the amount of paint used. Pay attention to the change of paint consumption.

Viscosity refers to the color difference caused by low or high viscosity on the computer. The viscosity in the barrel is very different from the viscosity of the barrel paint. After a few minutes of paint change, the color band on one side of the feed inlet appears color difference. This example is the same as the previous film thickness change. In essence, high or low viscosity will cause changes in film thickness. After a few minutes of paint change, the color band color difference appears from one side of the feed inlet. Pay attention to paint consumption. Plate temperature refers to the color difference caused by too high or too low plate temperature. Unreasonable furnace temperature setting and wrong feeding. The layout glossiness is not high, and MEK is unqualified. The same panel has no problem, but different volumes vary greatly. The temperature of stainless steel color coated coil shall be tested irregularly, and the coil temperature shall be measured by changing the specification (with large difference). Color difference of MEK scratch gloss cooling water caused by water quality. The water quality is not good, and the effect of pressing and rolling is not good

Color coated plate paint is not mixed evenly or not stirred well. It is distributed on the board in strips. Paint delamination, resulting in viscosity difference. For more information about color painting, please contact us