Abstract: A method for spray-coating substrate surfaces, in which (a) a thermoplastically processable material is molten and thus liquefied in an extruder in a first step; (b) the molten material is pressurized by means of a carrier gas or vapor; (c) a mixture formed from said molten material and said carrier gas or vapor is pressed through one or more nozzles, optionally supplying a spraying gas having a temperature at least as high as the melt temperature to the spraying jet in the region of the discharge opening of the nozzle; and (d) the obtained spray jet with the molten material is directed onto the substrate surface, wherein the material impinges in drops in a flowable state onto the substrate surface, forms a continuous coating on the substrate surface, and subsequently solidifies.