A method for forming a film on a molding, wherein a first mold and a second mold are, at least, provided so as to mold a first molding and a second molding, the method comprises the steps of:
- removing the first and second moldings molded in a mold-matched state, wherein:
- the first molding is not removed from the first mold so as to be left in the first mold while removing the first molding from the second mold,
- one surface of the first molding is removed from the second mold so as to be exposed,
- another surface of the first molding is not removed from the first mold so as to be unexposed, and
- the second molding is not removed from the second mold so as to be left in the second mold while removing the second molding from the first mold;
- mold-matching masking that matches a mold surface of the first mold from which the first molding is not removed to a mold surface of the second mold, a film-forming means being incorporated within the mold surface of the second mold that is different from another mold surface of the second mold that forms the first and second moldings, and further masking a portion of the exposed surface of the first molding by the mold surface of the second mold;
- and
- forming the film by the film-forming means.