Patent ID: 10532537

Abstract:
A sandwich structure which is configured of skin layers each including at least one layer selected from among a metal layer, a fiber-reinforced resin layer (X) that includes continuous fibers and a matrix resin (A), and a fiber-reinforced resin layer (Y) that includes discontinuous fibers and a heat-curable matrix resin (B) and of a core layer including a flowable core layer that includes discontinuous fibers and a matrix resin (C), wherein the skin layers are constituted of a material which has a flexural modulus higher than that of the core layer, and a through part has been formed in a region that lies in at least some of the skin layers. In the sandwich structure, an upright part which projects in an out-of-plane direction of skin layer and which has high strength and a complicated shape such as a rib is obtained by an easy method.