Beschichtungsverfahren

In the coating method containing a coating step for coating a substrate with a paint and a drying step for drying the paint coated thereon, the paint is sprayed on a side extending in an up-and-downward direction and a side extending a horizontal direction in the coating step in such a manner that it is coated in a given film thickness on the horizontally extending side and in a film thickness on the up-and-downwardly extending side, which is thicker than its sagging limit thickness in which it sags. The coating is effected such that the coating on the up-and-downwardly extending side is finished at the same time as or subsequent to the coating on the horizontally extending side. In the drying step, the substrate is rotation about its horizontal axis extending in a horizontal and longitudinal direction of the substrate during a period of time from before the paint sags to until it is cured to a sagless state. The rotation of the substrate is carried out at a speed which is high enough to reverse its vertical position to its horizontal position before the paint sags due to gravity yet which is low enough to cause no sagging as a result of centrifugal force.