| abstract |
The invention relates to a method of treatment in an enclosure (3) of an internal surface (2) of a container (20) made of polymer material in order to deposit a barrier effect coating thereon, comprising:n - the introduction of the container (20) into the enclosure, - the introduction into the container (20) of a so-called precursor gas intended, once transformed into the plasma state, to be deposited at least in part on the internal surface of the container to form the coating,n the method further comprising:n - the transformation into the plasma state of the precursor gas by a combination of excitations comprising a main excitation by means of microwave-type electromagnetic waves,n and a secondary excitation by means of an electric discharge of alternating voltage having a frequency between 1 kHz and 15 MHz. The invention also relates to a device for carrying out the method of the invention.n Figure for the abstract: figure 2 |