Abstract: The present invention concerns a method of producing a sandwich structure which is easy to produce and which has particular physical and/or chemical properties. To achieve that there is proposed a method of producing that sandwich structure which has the following steps: a) introducing a first cover layer (3) into an injection molding mold, b) introducing a second cover layer (3) into the injection molding mold, c) closing the injection molding mold, d) injecting a core material into the closed injection molding mold between the first and second cover layers (3) by means of injection molding, e) hardening of the core material so that a core layer (2) is formed between the two cover layers (3), and f) opening the injection molding mold and removing the sandwich structure (3) from the mold.