Method for the formation of multi-layer paint films

摘要

A method of forming a multi-layer paint film comprising coating an aqueous first colored base paint (A) on an electro-deposition paint cured paint film to form a first colored base paint film, coating an aqueous second colored base paint (B) on 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) coated on the second colored base paint film after preliminary heating of the first paint film and second paint film to form a clear paint film, and heating and curing the three paint films at the same time, wherein a talc pigment is included in each of paint (A) and paint (B) in an amount of from 1 to 5 mass % with respect to the total resin solid fraction of each of paint (A) and paint (B).

主权项

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.