Abstract: The invention relates to the process and apparatus coating of a substrate, particularly a glass ribbon, with a pulverulent product. The invention proposes the implementation of a distribution nozzle (10, 24) that sprays the pulverulent product in suspension in a gas, and a suction device (14) for evacuating the resultant waste of the decomposition of the pulverulent product from a coating zone (Z). The invention concerns the formation of at least one to extend the residence time of the pulverulent product in the coating zone to facilitate its deposit on the substrate. The invention also concerns the production of substrates, particularly glazings, coated with metal oxides.

Abstract: An improvement in the process for the production of a glass ribbon by the float glass method, wherein the glass ribbon is formed on a bath of molten metal, caused to float along on top of it and, after being sufficiently hardened, drawn off the bath. The improvement includes the step of pneumatically or mechanically generating and maintaining transverse and longitudinal currents in the molten metal in order to distribute the temperature evenly and/or to stretch the layer of glass on the metal bath. In construction, the currents are generated by a pump which is submerged in the molten metal. The pump includes pneumatic or mechanical structure for pumping molten metal through it so as to create the desired currents.