Abstract: Disclosure of an electrode arrangement (1) as high voltage electrode for continual plasma treatment or plasma coating of web material with several knife electrodes (3) arranged at a right angle to any transport direction of the web material and essentially located parallely to each other which is characterized by the fact that the distances (a?e) of adjacent knife electrodes (3) vary. In tests it has turned out that a more uniform coating result or, respectively, treatment result can be achieved with such an electrode arrangement than with comparable arrangements in which the knife electrodes are arranged equidistant. Preferably, the distances (a) between adjacent knife electrodes (3) are larger at the edges of the electrode arrangement (1) than the distances (e) between adjacent knife electrodes (3) in its center.

Abstract: The present invention provides a method with which a workpiece can be subjected to an atmospheric-pressure plasma treatment and/or plasma discharge on a side facing away from the high-voltage electrodes inducing the plasma discharge. This is a method for continuous atmospheric-pressure plasma treatment and/or plasma coating of electrically insulated workpieces, in particular boards or sheets of material in which a workpiece to be treated is arranged at a distance beneath at least one high-voltage electrode extending across the direction of movement over at least the width of the surface of the workpiece to be treated, and the electrode and the workpiece are set in motion in relation to one another in a direction of movement, a high voltage being applied to the high-voltage electrode, preferably in the form of an a.c.

Abstract: The invention relates to a method for treating plasma under continuous atmospheric pressure of, in particular, electrically insulating workpieces, in particular material plates or strips. According to said method, the workpiece which is to be machined, is arranged at a distance below at least one electrode which is made of two barrier electrodes, which are arranged in a successive manner in the direction of displacement with a gap, and which extends in a manner which is transversal to the direction of displacement at least over the width of the surface of the workpiece which is to be machined. The electrode and the workpiece are mutually offset in the direction of displacement. High voltage, which is in the form of an alternating voltage, is applied to the barrier electrodes, in order to provoke at least plasma discharge in the gap. The plasma discharge is driven by the gas flow from the gap in the direction of the surface of the workpiece which is to be machined.

Abstract: Disclosure of an electrode arrangement (1) as high voltage electrode for continual plasma treatment or plasma coating of web material with several knife electrodes (3) arranged at a right angle to any transport direction of the web material and essentially located parallely to each other which is characterized by the fact that the distances (a?e) of adjacent knife electrodes (3) vary. In tests it has turned out that a more uniform coating result or, respectively, treatment result can be achieved with such an electrode arrangement than with comparable arrangements in which the knife electrodes are arranged equidistant. Preferably, the distances (a) between adjacent knife electrodes (3) are larger at the edges of the electrode arrangement (1) than the distances (e) between adjacent knife electrodes (3) in its center.

Abstract: A barrier electrode for the treatment of surfaces of electronically conductive or non-conductive materials with medium frequency electric discharges and a barrier electrode arrangement with one or more such barrier electrodes, wherein the barrier electrode is constructed as a tube of dielectric material with two ducts extending parallel to each other in the longitudinal direction of the tube. The duct which in the position of use faces the counter electrode is provided with a high voltage conductor and the other duct serves for supplying a temperature-influencing medium or a process gas.