Method of multilayer film formation

摘要

A method for film formation, which comprises: (i) applying onto a substrate an electrocoating (A) and an intermediate coating (B) in this order; (ii) heat-curing the formed films of the coatings (A) and (B); (iii) applying thereon 11(i) a liquid light color coating (C) which comprises 11(a) 100 parts by weight of a first thermosetting resin composition, 11(b) from 0.1 to 30 parts by weight of a fine aluminum powder having an average particle diameter of less than 10 m and 11(c) from 1 to 200 parts by weight of a titanium oxide pigment and which shows a film hiding power of 25 m or less and a film elongation ratio of from 10 to 50% at 20{C, 11(2) a liquid metallic coating (D) which comprises 100 parts by weight of a second thermosetting resin composition and from 0.1 to 20 parts by weight of a metallic pigment having an average particle diameter of 3 m or more and which shows a film hiding power of 50 m or more and a film elongation ratio of 10% or less at 20{C, and 11(3) a clear coating (E) in this order on a wet-on-wet basis; and (iv) heating the formed films of the coatings (C), (D) and (E) to crosslink and cure the three films simultaneously.