Reasons for the lack of gloss on the surface of color-coated coils

Cause: The reason for the paint formulation. There are too many pigments, fillers and solvents in the paint, insufficient fineness or too much dust. The surface of the substrate is rough, with oil, moisture, wax, etc., and the coating is not fully cured. If the paint is not fully stirred before it is put on the machine, the solids of the paint will settle at the bottom of the barrel, so that there is less pigment in the working barrel during construction. Too much thinner is added to the paint, which dilutes the effect of the light paint. The surface coating is too thin and the roller is too high or too low at room temperature. The temperature of the curing oven is set too high, the hot air circulation in the oven is incomplete, the coating is overheated, and the eyes are aged and the gloss is reduced.