Patent ID: 7309221

Claim:
An in-mold coat forming mold: comprising a mold cavity, formed by a male mold and a female mold; a shear-structured engaging portion; and a coating material injector for applying a coating, in the mold cavity, on the surface of a resin formed product formed in the cavity, characterized in that the male mold and female mold are engaged with each other along the shear-structured engaging portion; a coating material leakage-preventing means is disposed in the vicinity of the edge of the mold cavity adjacent to the shear-structured engaging portion and the coating-material leakage-preventing means is a groove formed in the vicinity of the edge of the mold cavity and disposed adjacent to the shear-structured engaging portion so as to lie along the circumference of the cavity, the groove arranged such that upon formation of a resin formed product, a projection of resin of the resin formed product is formed and the projection prevents leakage of the coating material by pressing against the shear-structured engaging portion.