US Patent 11155059 Multi-layered fibre composite material

The present invention relates to a multilayer composite, comprising at least three superimposed plies of fibre composite which are defined relative to one another as two outer plies of fibre composite and at least one inner ply of fibre composite, wherein each of these at least three plies of fibre composite comprises endless fibres, the endless fibres being unidirectionally aligned within the respective ply and embedded in a polycarbonate-based plastic, wherein the polycarbonate is selected from homopolycarbonate or copolycarbonate, the inner plies of fibre composite essentially have the same orientation and their orientation relative to the outer plies of fibre composite is rotated by 30° to 90° , wherein the orientation of a ply of fibre composite is determined by the orientation of the unidirectionally aligned fibres present therein.