During the production process of the painting counter display cabinet, sometimes the surface of the coating layer of the drying coating layer appears many semi -round protrusions, like orange peels. This phenomenon is often called orange peel. The phenomenon of coating coating produces orange peels is mostly caused by the poor flow of the coating.
Poor flowing properties are caused by various factors such as coating itself and improper spray construction. In order to prevent the emergence of orange peels, it should be noted during construction: jewelry showcases (1) counter on the bottom layer of the counter on the counter, and closed white blank with closed paint will help flat. In addition, the surface of the coating should be fully polished and flat, and a certain degree of smoothness must be achieved in order to ensure the consistency of the moisture and the flow of the coating.
(2) Ensure that the viscosity should not be too large during spraying. (3) Make sure that the surface is dry after spraying, and the environmental temperature cannot be too high (usually about 200C), and it cannot be dried immediately after spraying. (4) Make sure the flowing time after spraying.
In addition to keeping the suitable temperature of the dry house, the wind speed of the drying house should not be too large, otherwise the volatilization of the solvent will be shortened to shorten the flowing time of the paint. Jewelry display cabinet (5) ensure the flatness after spraying, and also ensure that each coating has a certain thickness, and it cannot be too thin. Excessive or too thick will cause orange peel.
5—About 30 microns. (6) The effects of other factors, such as the low boiling point solvent in the coating, the content of the low boiling point is high. During construction, the solvent volatilizes is too fast, and the membrane substance is too late to form the orange peel.
In this case, you can adopt an appropriate method or add some high -boiling point solvents to prevent the production of orange peel. In addition, the coating itself is not well -soluted with the curing agent or the diluent, and it will also produce orange peel. Due to the tight time of the orange peel phenomenon, it is not time to anti -working in time.
The surface of the paint film can be polished with fine sandpaper, and then polished.