Process for the production of functional layers on wood-composite boards, in particular wood-fibre-composite boards, comprising the steps of: a) application of a basecoat to the wood-composite boards, b) optionally application of a pigmented basecoat to the wood-composite boards, c) application of at least one first functional layer to the wood-composite boards by means of a 3D printer, d) application of at least one decorative layer to the at least one first functional layer by means of an analogue printer, digital printer and/or 3D printer, e) optionally application of at least one further functional layer by means of a 3D printer to the decorative layer, f) application of at least one protective layer a) comprising at least one resin, or b) at least one radiation-curable lacquer and/or c) at least one polyurethane to the decorative layer; and g) a) incipient drying and/or b) incipient gelling of the protective layer applied on the decorative layer; and optionally h) production of a structure in the surface of the protective layer a) via action of heat and pressure in a press, b) by use of a structuring roll and full hardening of the lacquer where the at least one first functional layer and/or the at least one further functional layer are selected from - a latent heat accumulator with phase-change materials, - a floor-heating system based on a resistance-heating system, - an illumination system based on electroluminescence, e.g. luminophores comprising zinc sulphide, - a burglary sensor based on piezoelectric elements, or - a system for appropriate adjustment of colour, based on thermochromic pigments, - an accident/burglary alarm based on piezochromic pigments, or - a fire alarm based on resistance change; and where the functional layers comprise no reinforcing ply. a) application of a basecoat to the wood-composite boards, b) optionally application of a pigmented basecoat to the wood-composite boards, c) application of at least one first functional layer to the wood-composite boards by means of a 3D printer, d) application of at least one decorative layer to the at least one first functional layer by means of an analogue printer, digital printer and/or 3D printer, e) optionally application of at least one further functional layer by means of a 3D printer to the decorative layer, f) application of at least one protective layer a) comprising at least one resin, or b) at least one radiation-curable lacquer and/or c) at least one polyurethane to the decorative layer; and a) comprising at least one resin, or b) at least one radiation-curable lacquer and/or c) at least one polyurethane to the decorative layer; g) a) incipient drying and/or b) incipient gelling of the protective layer applied on the decorative layer; and optionally h) production of a structure in the surface of the protective layer a) via action of heat and pressure in a press, b) by use of a structuring roll and full hardening of the lacquer where the at least one first functional layer and/or the at least one further functional layer are selected from - a latent heat accumulator with phase-change materials, - a floor-heating system based on a resistance-heating system, - an illumination system based on electroluminescence, e.g. luminophores comprising zinc sulphide, - a burglary sensor based on piezoelectric elements, or - a system for appropriate adjustment of colour, based on thermochromic pigments, - an accident/burglary alarm based on piezochromic pigments, or - a fire alarm based on resistance change; - a latent heat accumulator with phase-change materials, - a floor-heating system based on a resistance-heating system, - an illumination system based on electroluminescence, e.g. luminophores comprising zinc sulphide, - a burglary sensor based on piezoelectric elements, or - a system for appropriate adjustment of colour, based on thermochromic pigments, - an accident/burglary alarm based on piezochromic pigments, or - a fire alarm based on resistance change;