Method for the plasma cleaning of the surface of a material coated with an organic substance and the installation for carrying out said method

An installation for carrying out a process for cleaning the surface of a material coated with an organic substance, the process comprises introducing said material into a treatment chamber, having a pressure of between 10 mbar and 1 bar therein, which is supplied with a gas stream containing at least 90% oxygen by volume and generating a plasma by passing an electric discharge between the surface of said material and a dielectric-covered electrode, breaking down said organic substance through the action of the free radicals O. thus produced, where the material is in the form of a running strip and said introducing and generating operations are carried out continuously using installations placed in succession along the path of the running strip, the installation comprising:

• at least one module comprising a treatment chamber,
• means for setting the pressure inside said chamber to a value between 10 mbar and 1 bar,
• means for making said grounded strip run through said chamber,
• a series of dielectric-covered electrodes placed so as to face that surface of said strip to be treated, where the electrodes are connected to a sinusoidal high-voltage generator, and
• means for supplying said chamber with gas and means for extracting from said chamber the gases resulting from the decomposition of the organic substance coating the strip.