Patent ID: 9378932
Filing Date: 2016-06-28
CPC Classification: C03C,H01J

Claim Text:
1. A process for preventing substrate damage(s) in an installation for surface treatment by dielectric barrier discharge (DBD) comprising: providing a DBD installation comprising a reaction chamber, in which are positioned means for supporting and/or moving a substrate and at least two electrodes arranged in parallel on either side of the means for supporting and/or moving the substrate; feeding or passing a glass substrate into the reaction chamber; putting into operation a high power supply, supplying a power of at least 50 kW; detecting an amplitude of a voltage at the terminals of said electrodes and an amplitude of a current circulating between said electrodes; defining a maximum number of alternations of voltage at the terminals of the electrodes in the presence of a hot electric arc (n max) in order not to exceed 50 Joules as dissipated energy in said substrate; when a variation of the amplitude of the voltage at the terminals of said electrodes and the amplitude of the current circulating between said electrodes results from triggering of the hot electric arc between said electrodes, modifying with inverse feedback the voltage at the terminals of said electrodes before the defined maximum number of alternations of voltage at the terminals of the electrodes is reached; wherein where