| abstract |
The invention concerns a method for treating, in an enclosure, (3) an inner surface (2) of a container (20) made from polymer material, in order to deposit a barrier-effect coating there, comprising: - inserting the container (20) into the enclosure, - introducing a so-called precursor gas into the container (20) intended, once transformed into the plasma state, to be deposited at least partially on the inner surface of the container in order to constitute the coating, the method further comprising: - transforming the precursor gas into the plasma state by a combination of excitations comprising a main excitation by means of electromagnetic waves of the microwave type, and a secondary excitation by means of an electrical discharge of alternating voltage having a frequency of between 1 kHz and 15 MHz. The invention also relates to a device for implementing the method of the invention. |