To improve the central position precision and face-falling precision of a plastic molding by improving the precision of positioning when a molding mold made of glass is set in a molding apparatus for molding the molding.
In the molding mold made of glass produced by a method in which an original mold 1 is set in a receiving mold 32 having a circumferential wall part 322 and a bottom part 321, a glass raw material 2 is set between the original mold 1 and the circumferential wall part 322 of the receiving mold 32, the glass raw material 2 is heated/softened and press-molded vertically by using a glass molding press mold 31, so that the shape of the peripheral surface 12 of the original mold 1 is transferred to the inside surface 21 of the glass raw material 2, and a standard surface for positioning when the molding mold of glass is set in the molding apparatus for molding the plastic molding is set on the inside surface of a ring-shaped peripheral part protruding to the lower surface peripheral part of the molding mold made of glass.
MIYATA RYOTA
OTSUKA MASASHI
