PROCESS FOR THE FORMATION OF MULTILAYER COATING FILM AND PROCESS FOR THE PRODUCTION OF COATED MEMBERS

摘要

The invention provides a three-coat one-bake type coating process for forming a multilayer coating film which attains high efficiency and brings about an excellent finished appearance. A three-coat one-bake type coating process comprising the step of applying an intermediate coating material, the step of applying a finish base coating material, the step of applying a clear topcoating material, and the step of drying, wherein a two-package type coating material containing an isocyanate compound as the crosslinking agent is used as the intermediate coating material, whereby the surface fluidity of the intermediate coating is improved to make the coating surface smooth and the mixing of the intermediate coating with an upper layer and/or the volume shrinkage of the intermediate coating due to the component eliminated by curing are inhibited to give coated members excellent in finished appearance.