Patent ID: 6866497

Claim:
A molding apparatus comprising: a first die having an exterior forming surface; a second die that has a core receiving section having a support surface that can support a core, wherein, when the apparatus is closed, the first and second dies define a cavity; and a bulge projecting from the exterior forming surface of the first die, wherein the bulge is positioned opposite die support surface; wherein, when the apparatus is closed, a projection is selectively formed on the second die by providing a core at the core receiving section such that the core is supported by the support surface of the core receiving section, the projection being located on a section of the second die that corresponds to the bulge; and wherein, when a through hole is formed in a molded product, the projection is formed on the second die, and wherein, when a groove is formed on an exterior surface of a molded product by the bulge of the exterior forming surface, the projection is not formed on the second die.