Patent ID: 7967598

Claim:
A molding die comprising a stationary die and a movable die, the molding die being for molding a molded article in a cavity defined between both of the dies, the molded article having a two-layer structure of a core and a foam layer, wherein: the stationary die comprises a main die and a slide die that moves relative to the main die, the slide die partially faces the cavity and moves in a direction different from a die clamping and die opening direction, and a face of the slide die that faces the cavity comprises faces extended in a plurality of directions that are not mutually in parallel, the main die comprises an accommodation space that accommodates the slide die partially or all of the slide die, the accommodation space is molded so as to allow the slide die to move in a predetermined direction, and the slide die is moved by an actuator so as to form a cavity for the foam layer in accordance with growth of the foam layer, a linear vector orthogonal to each of the faces extended in a plurality of directions making up the face of the slide die that faces the cavity is determined based on an area ratio of each face, a combined vector is determined by combining the respective linear vectors, a direction orthogonal to the combined vector is set as a movement direction of the slide die, one side face of the slide die is pushed out by an actuator, an inner wall of the movable die opposed to another side face of the slide die on the opposite side of the one side face is formed to be extended in a direction of the combined vector, and the slide die moves along the inner wall.