To facilitate formation of a sight edge on which a structure of a cavity of a mold is seen uniform on a film laminate adjacent to a border be tween an end edge part of the film laminate and a plastic base material below it by giving discontinuity of surfaces on the mold and its corresponding part.

A lower end edge 12 of a film is arranged in a mold so as to be arranged along a side part 45 of a curved part apart from a top part 43. Fused plastic is injected into the mold along the rear side of a film laminate. Consequently, the film is pressed on a surface of a cavity 20 by work of the fused plastic. A border is arranged between a lower side edge 12 of the film and plastic during molding process and arranged on a ridge or an escape region at a position of an inclined surface 45. The film laminate or the similar thing covers a surface of a desired surface of a part, and a lower end edge of the film laminate or a surface of plastic adjacent to an upper end edge have a uniform boundary region.