Method for producing a sandwich panel comprising a reinforced foam core

A method for producing a sandwich panel comprising a reinforced foam core, comprising:

• inserting a plurality of rod-shaped, thermoplastic reinforcing elements into a thermoplastic foam material such that the reinforcing elements extend from a first cover surface of the foam material, through the foam material, to a second cover surface of the foam material, wherein end regions of the reinforcing elements project out of the first cover surface and the second cover surface;
• thermoforming the foam material comprising the reinforcing elements to form a reinforced foam core, wherein the end regions of the reinforcing elements are integrally bonded to the foam material in a fused connection by applying temperature and pressure to the cover surfaces of the foam material, and wherein the end regions of the reinforcing elements are reshaped and pressed into the foam material to form a flat surface;
• and
• laminating a first thermoplastic cover layer on the first cover surface and laminating a second thermoplastic cover layer on the second cover surface by applying temperature and pressure to the reinforced foam core on the first cover surface and the second cover surface of the foam material in order to form the sandwich panel, wherein the first thermoplastic cover layer and the second thermoplastic cover layer are bonded to the reinforced foam core in a fused connection.