Patent ID: 9630212
Date: 2017-04-25
CPC Classifications: B05D

Claim:
1. A method for the formation of multi-layer paint films, comprising: coating an aqueous first colored base paint (A) over an electro-deposition paint cured paint film to form a first colored base paint film, coating an aqueous second colored base paint (B) over the first colored base paint film without preliminary heating of the first colored base paint film to form a second colored base paint film, coating a clear paint (C) over the second colored base paint film after preliminary heating of the first colored base paint film and second colored base paint film to form a clear paint film, wherein the coating steps occur in succession and the second colored base paint film (B) is directly applied to the first colored base paint film (A), and the clear paint film (C) is directly applied to the second colored base paint film (B); and heating and curing the three paint films which have been formed at the same time, wherein a talc pigment is included in each of the aqueous colored first base paint (A) and aqueous colored second base paint (B) in an amount of from 1 to 5 mass % with respect to a total resin solid fraction of each of said aqueous colored first base paint (A) and aqueous colored second base paint (B); and wherein the first colored base paint film has a cured film thickness in the range of 5 to 30 μm, the second colored base paint film has a cured film thickness in the range of 5 to 30 μm, and the clear paint film has a cured film thickness in the range of 20 to 50 μm.