| 摘要 |
<p>A highly reflective surface coating on a substrate (W) is formed by a coating method in a coating line. A paint is sprayed (P2) on the substrate in a viscosity of 18 seconds or lower when measured by means of Ford Cup #4 at 20 DEG C in a film thickness thicker than a thickness at which the paint sags, the paint containing a solvent or solvents, having a boiling point as high as 110 DEG C or lower in an amount of 50% by weight or higher. After completion of the spraying (P2), a coat of the paint is dried by a drying step including sequential setting (P3) and baking steps (P4). The substrate (W) is held in an ambient temperature during the setting step which is lower than the ambient temperature during the baking step, and the rotation of the substrate in the drying step being carried out about its horizontal axis at a speed which is high enough to rotate the substrate (W) from a vertical position to a horizontal position before the paint coated thereon substantially sags due to gravity yet which is low enough so as to cause no sagging as a result of centrifugal force, thereby allowing the coat formed thereon to achieve a substantially sagless state. This coating method prevents the paint from swelling on an edge portion of the substrate (W) forming a mass, whereby a coat surface is provided with a high degree of flatness.</p> |
