a method and apparatus for the continuous application of surface cover foils to the surfaces of particle boards wherein the particle board is surfaced and roughened as it leaves a double band press in which it is manufactured . a grinding and roughening tool includes a carrier studded with grinding crystals which carrier is pressed against the surface of the particle board by pressurized air while it is oscillated in a direction normal to the movement of the particle board . subsequently , decorative foils taken from rolls are applied to the particle board surfaces and attached thereto under heat and pressure while the particle board with the decorative foils thereon is moved through an isobaric double band press .