Patent ID: 8323540

Claim:
A method for molding a molded article with a two-layer structure of a core and a foam layer using a molding die including a stationary die including a main die and a slide die moving relative to the main die, and a movable die, the molded article being molded in a cavity defined by the stationary die and the movable die, the foam layer including faces extended in a plurality of directions, the method comprising the steps of: a first step of molding the core in the cavity to be a predetermined shape; and a second step of charging a molten material for the foam layer in the cavity, letting at least the slide die move in a predetermined direction in accordance with growth of the foam layer, and releasing the molded article from the main die, the slide die and the movable die, wherein when the foam layer grows at the second step, the slide die moves in the predetermined direction, whereby all of the faces extended in the plurality of directions that make up the foam layer grow so as to satisfy a predetermined expansion ratio, and wherein a linear vector orthogonal to each of faces extended in a plurality of directions making up a 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, and a direction orthogonal to the combined vector is set as the predetermined direction for the movement of the slide die.