Decorative member and manufacturing method thereof

A manufacturing method of a decorative member for covering a millimeter wave receiver of a vehicle comprising:

• preparing a transparent resin layer provided on a rear surface thereof with a general portion, a stepped portion recessed or protrudingly provided with respect to the general portion, and an inclination portion provided between the stepped portion and the general portion, an inclination angle of the inclination portion with respect to a normal line of the general portion being equal to or more than 25° and being equal to or less than 40° and a width of the inclination portion being large beyond 0.38 mm and being equal to or less than 1 mm;
• disposing a first layer, including a metal layer having a wavelength characteristic adapted to the millimeter wave receiver, on at least the stepped portion and the inclination portion of the rear surface of the transparent resin layer;
• allowing a part covering the stepped portion in the first layer to remain and separating an excess part, other than the covering the stepped portion, in the first layer by Laser irradiation, wherein
• when the excess part is separated, a boundary between an irradiation area and a non-irradiation area of the laser is set as a center in a width direction of the inclination portion;
• and
• disposing a second layer, made of a paint, on the rear surface of the transparent resin layer after the first layer is disposed, wherein the first layer and the second layer are included in a decorative layer for the vehicle.