Generally, summer atmospheric humidity is higher, and low humidity in winter, in addition the discretion of the humidity and the area has a lot to do. Painting standard, the coating equipment when using relative humidity should be 55% 75%. So, for some paint requiring higher quality, to ensure appropriate humidity, can add humidification and dehumidification equipment in air supply system, such as humidifier, temperature-regulated dehumidifier, etc.

Spray paint is used when temperature-regulated dehumidifier, indoor appropriate USES full fresh air, so air humidity, temperature is not affected by water at the bottom of the chamber body. The lacquer that bake, in order to save energy, hot air can be recycled. But because of the wet spray paint room there are water lower grille, if you don't take measures to evaporate moisture will through the circulatory system back to the interior, thus increasing the humidity of indoor wind circulation, cause indoor humidity levels. Humidity affects solvent volatilization rate, further affects the coating flow and flow performance. Because coating operation under high humidity, evaporation of the solvent can make wet paint film surface temperature is lower than the dew point temperature, the moisture in wet paint surface condensation, paint film caused by "white" phenomenon. So, to reduce the humidity, temperature-regulated dehumidifier to suitable humidity.

Part in the workshop, some entities, such as spray paint room, polishing, coating room, etc, its important craft parts are to be installed on the humidifying device, such as the humidity cannot too big, according to different season, the humidity should be controlled in 40% - 80% RH, if the humidity is too big, should use the temperature-regulated dehumidifier, dehumidifier, so we can eliminate static electricity. Because of static electricity is one of the factors influencing the spray paint process, to eliminate static electricity, can prevent the dust adhered on the surface of the workpiece and improve the coating surface brightness, thus improve the overall quality. Painting work is related to the humidity of the air quality and construction period. If the humidity is more than 85%, can make the construction quality is poor, easy to cause the loss of white, crack, adhesion, peeling coating defects.