Still further, the melamine curable type water-based coating composition can be mixed with a water-soluble resin and a water-dispersible resin, for example, a resin such as a polyester, a polyetherpolyol, a polyesterpolyol, a polyurethanepolyol, a maleic-modified fatty acid, and an adduct of ethyleneoxide or propyleneoxide to bisphenol A, which are usually employed.