A method for laser marking of polymeric material

To provide a method for laser marking of polymeric material, wherein there is no substantial change in the structure of the matrix of the polymer material, a method is proposed comprising the steps of: - providing a polymer material, in which are provided under and / or on the polymer material nanoparticles and / or one or more nanolayers, and wherein the nanoparticles and / or nano-layer (s) comprise at least one laser-sensitive component; and - the action of laser light to a selected area of ​​the polymeric material so that the laser-sensitive component in this area is at least partially modified in their physical structure.