| abstract |
An object achieved by the present invention is to provide a coated article having excellent appearance, corrosion resistance, weatherability, and chipping resistance obtained by a wet-on-wet coating. The present invention provides a method for forming a multilayer coating film comprising the steps of forming, on a substrate, an uncured coating film of a primer paint composition (A) containing an epoxy resin (a1) having a weight average molecular weight of 20000 or more and pigments, forming, on the uncured coating film, a top coating film of a top paint composition (B) containing an acrylic resin (b1) and the like, and simultaneously drying the films, wherein the uncured coating film of the primer paint composition (A) during application of the top paint composition (B) has a viscosity of 5 Pa·s to 1000 Pa·s, and the value ΔNV obtained by subtracting the value (NV1) of application mass solids content (%) of the primer paint composition (A) from the value (NV2) of mass solids content (%) of the uncured coating film of the primer paint composition (A) during the application of the top paint composition is 15 or more. |