Machine for the treatment of bottles that are equipped with an interchangeable connection cartridge

A machine for the treatment of containers by depositing a barrier-forming internal coating by microwave plasma, said machine comprising at least one treatment station, each treatment station comprising:

• an enclosure for containing the container, the container including a container lip and a container neck, wherein a microwave plasma field is emitted inside the enclosure from a microwave field generator;
• and
• a cover mounted axially slidably with respect to the enclosure,
• the cover comprising i) a nipple equipped with a gripping means for grasping the container externally by the container neck, so as to allow axial insertion of the container into the enclosure, ii) a vacuum-pumping chamber, and iii) a leaktight connection means for connecting the interior of the container and the vacuum-pumping chamber, the leaktight connection means comprising
• a cartridge having a substantially tubular shape and mounted coaxial with respect to the container neck and forming a leaktight contact with the container lip when grasped by the gripping means, the cartridge comprising an axial connection portion having radial ports extending inside the vacuum-pumping chamber, the vacuum-pumping chamber communicating with the interior of the cartridge via the radial ports,
• wherein, the microwave field emitted inside the enclosure gives causes deposits a barrier-forming internal coating on the containers, and dimensions of each radial port prevent the microwave plasma, emitted inside the container during the treatment, from diffusing toward the vacuum-pumping chamber.