Abstract: Process for coating hollow objects exhibiting an opening, and beverage cans in particular, in which the hollow objects are immersed completely and with the opening downward in a paint-filled submersion bath, the openings being moved into the vicinity of nozzles for the paint, which are located underneath the surface of the liquid in the submersion bath and which at least partially displace the air trapped in the hollow objects immersed in the submersion bath by means of streams of paint discharging from the nozzles. With this process hollow objects can be painted uniformly inside and outside in one step without its being necessary to turn them either to fill them with paint when immersed in the submersion bath or to drain them after their being lifted out of the bath.

Abstract: Device for the electrophoretic coating of the internal surface of electrically conductive hollow bodies, in particular of packaging cans, having at least one mount, forming the anode or cathode, for at least one hollow body with the opening pointing downward, at least one nozzle, which can move axially in relation to the hollow body as far as the opening, for a water-soluble surface coating agent, which produces the connection to a cathode or anode, as liquid electrolyte of an electrically insulating seal, for the nozzle in the opening in the hollow body, and at least one return flow passage in the region between the nozzle and the internal edge of the opening in the hollow body.

Abstract: Process for coating hollow objects exhibiting an opening, and beverage cans in particular, in which the hollow objects are immersed completely and with the opening downward in a paint-filled submersion bath, the openings being moved into the vicinity of nozzles for the paint, which are located underneath the surface of the liquid in the submersion bath and which at least partially displace the air trapped in the hollow objects immersed in the submersion bath by means of streams of paint discharging from the nozzles. With this process hollow objects can be painted uniformly inside and outside in one step without its being necessary to turn them either to fill them with paint when immersed in the submersion bath or to drain them after their being lifted out of the bath.

Abstract: Process and device for coating hollow objects exhibiting an opening, and beverage cans in particular, in which the hollow objects are immersed completely and with the opening downward in a paint-filled submersion bath, the openings being moved into the vicinity of nozzles for the paint, which are located underneath the surface of the liquid in the submersion bath and which at least partially displace the air trapped in the hollow objects immersed in the submersion bath by means of streams of paint discharging from the nozzles. With this process and device hollow objects can be painted uniformly inside and outside in one step without its being necessary to turn them either to fill them with paint when immersed in the submersion bath or to drain them after their being lifted out of the bath.

Abstract: Process and apparatus for examining the porosity of coated objects, and in particular of enamelled, electrically conductive strip and profiled material or objects, and in particular of hollow bodies such as beverage cans, in which electrical contact is made with the strip and profiled material or the hollow body to form one pole for an applied test voltage, an electrically conductive connection is made to a coated surface of the strip and profiled material or to the hollow body by means of a continuous stream or curtain of electrolytic fluid emanating from a nozzle, to form the opposite pole for the applied test voltage and wherein the current flowing from the one pole through a stream or curtain of liquid and the coating to the other pole is measured as a measure of the porosity of the coating.

Abstract: Ultrafiltration separator with a membrane made of a stainless steel or titanium wire weave with a wire diameter of less than 0.02 mm, exhibiting more than 2000 picks, i.e. more than 2000 pores per inch, with mesh openings less than 0.004 mm in size, whereby the direction of flow for the medium to be filtered is parallel to the membrane and elevations generating turbulence are positioned at the surface of the membrane, transverse to the direction of flow.

Abstract: Process for anodic or cathodic electrocoating of strip or profile material in which electrical contact is made with the strip or profile material, in which an electrically conductive connection is made from at least one surface of the strip or profile material to a cathode or anode by means of a continuous stream or curtain of liquid issuing from the cathode or anode and comprising a walter-soluble paint as the electrolytic liquid, in which the strip or profile material is conveyed for continuous application of the electrolytic liquid to at least one surface, in which the paint particles which form a film on at least one surface are transported with the electrolytic liquid and in which the paint particles which form a film on at least one surface of the strip or profile material are coagulated by applying a direct current voltage between the cathode and the anode.

Abstract: A process and apparatus for treating and disposing of solid pollutants contained in liquids, in particular paint residues in water and/or solvents. The apparatus includes a power-driven heat-resistant surface formed by a turntable, a feed funnel for feeding liquid and/or paste containing solids onto the heat-resistant surface of the support table, a burner mounted underneath the support table for heating the heat-resistant surface of the support table, extracting ducts including a fan for removing the gases and vapors generated during the heat treatment of the liquid and/or paste containing solids, and removing blades for removing dried solids which remain on said heat-resistant support surface. All of the aforedescribed mechanisms and ducts can be mounted in a heat insulating housing.