Patent ID: 6733832
Filing Date: 2004-05-11
Classification: B05B,B05D,C09D,Y10T

Abstract:
A process for forming a shrunk matted multicolor pattern coating film having a 60 degree specular gloss of 10 or less determined according to JIS K5400 7.6 (1990) by spray-coating and baking plural coating materials having different colors on a moving strip coated article,wherein the above plural coating materials are shrunk matted coating film-forming coating materials each comprising: a resin composition containing (A) 60 to 95 parts by weight of a hydroxyl group-containing organic resin and (B) 5 to 40 parts by weight of a low nuclidic methylated melamine resin in such a proportion that the amounts of these both components sum up to 100 parts by weight, (C) a reaction mixture of 1 mole of a sulfonic acid compound and 1.5 mole or more of at least one amine compound having a boiling point falling in a range of 30 to 250Â° C. and selected from secondary amines and tertiary amines in an amount of 0.1 to 3 parts by weight in terms of an amount reduced to the above sulfonic acid compound per 100 parts by weight of the above resin composition, and (D) a color pigment; and in carrying out spray coating, (i) two or more spray-coating apparatuses having two or more coating material-discharging nozzles are used, and the respective coating material-discharging nozzles are disposed toward a coated article face; (ii) coating materials having coating colors which are different from each other are discharged from at least two coating material-discharging nozzles of the above respective spray-coating apparatuses to form a plural number of unit plural color spray patterns in which the above coating materials having different coating colors are present in a mixture; and (iii) thus, the respective unit multicolor patterns constituted by a plural number of the above unit plural color spray patterns are partially superposed on unit multicolor patterns constituted by unit plural color spray patterns adjacent thereto on the coated article to form multiple multicolor patterns covering the whole width of the coated article.