Abstract: An instrument panel (10) includes a base material portion (20) made of a base material M1 and a different material portion (30) made of a different material M2 having a different thermal shrinkage from that of the base material M1, and in the instrument panel (10), the base material portion (20) and the different material portion (30) are connected in a state such that at least a part of the two materials do not overlap.

Abstract: An instrument panel (10) is formed by bonding a base material portion (20) composed of a base material M1 and a different material portion (30) composed of a different material M2. The different material portion (30) is infiltrated into the base material portion (20) and the infiltration portion (33) has a plurality of intermittent recessed portions.

Abstract: An instrument panel forming method is provided with: a first supply step for supplying a base material 103 that will form the base material part and the different material 303 that will form the different material part into the cavity; and a second supply step for opening, with the pressure applied on the different material 303 maintained to be greater than the pressure applied on the base material 103, the frame-shaped core 215 to bring the base material 103 into contact with the different material 303 and cause the different material 303 to protrude into the base material 103 in the central section of the boundary between the base material 103 and the different material 303 in the thickness direction of the base material 103 and the different material 303 where solidification of the base material 103 and the different material 303 is delayed.

Abstract: An instrument panel (10) is formed by bonding a base material portion (20) composed of a base material M1 and a different material portion (30) composed of a different material M2. The different material portion (30) is infiltrated into the base material portion (20) and the infiltration portion (33) has a plurality of intermittent recessed portions.

Abstract: An instrument panel (10) includes a base material portion (20) made of a base material M1 and a different material portion (30) made of a different material M2 having a different thermal shrinkage from that of the base material M1, and in the instrument panel (10), the base material portion (20) and the different material portion (30) are connected in a state such that at least a part of the two materials do not overlap.

Abstract: An instrument panel forming method is provided with: a first supply step for supplying a base material 103 that will form the base material part and the different material 303 that will form the different material part into the cavity; and a second supply step for opening, with the pressure applied on the different material 303 maintained to be greater than the pressure applied on the base material 103, the frame-shaped core 215 to bring the base material 103 into contact with the different material 303 and cause the different material 303 to protrude into the base material 103 in the central section of the boundary between the base material 103 and the different material 303 in the thickness direction of the base material 103 and the different material 303 where solidification of the base material 103 and the different material 303 is delayed.

Abstract: There is provided a manufacturing method for a composite structure that makes it possible to join a thermoplastic resin molding, which serves as a second member for reinforcement, while at the same time preventing the deformation of a first member to be reinforced. The second member contains magnetic substances in a portion thereof that is to be abutted on the first member. The second member is introduced into an induction heating unit and subjected to induction heating, thereby heating the abutting portion of the second member to join the second member to the first member.

Abstract: There is provided a manufacturing method for a composite structure that makes it possible to join a thermoplastic resin molding, which serves as a second member for reinforcement, while at the same time preventing the deformation of a first member to be reinforced. The second member contains magnetic substances in a portion thereof that is to be abutted on the first member. The second member is introduced into an induction heating unit and subjected to induction heating, thereby heating the abutting portion of the second member to join the second member to the first member.