Decorative film and a method for forming the same

Decorative film formed on the surface of the resin substrate to be positioned to the radar device path and relates a method of forming not need high precision of thickness control in its formation, therefore, the yield in forming the efficiency is high, further It is excellent in radio wave permeability, excellent in appearance design properties exhibits a metallic color tone, to provide decorative films and the formation method. A method of forming a decorative coating 10 on the surface of the resin substrate 101 located to the radar device path, an organic material in which the metal nanoparticles 11 that organic molecules are coordinated to its surroundings become dispersed in the solvent generated, the organic material is applied to the surface of the resin base material 101, to volatilize the solvent, a method of metal nanoparticles 11 to form a decorative film 10 having dispersed in the organic film 12.