A protective skin (24) of closed-cell form is extruded over the outside surface of the material (22).

This device comprises a treatment head (1) consisting of a chambered casing delimiting a skin suction chamber (2).

This cyclone is surrounded by an odd, honeycombed-shaped hexagon, which itself does not seem to move while the clouds within it whip around at high speeds, also greater than 500 kilometers per hour (300 miles per hour).

This cyclone is surrounded by an odd, honeycombed-shaped hexagon, which itself does not seem to move while the clouds within it whip around at high speeds, also greater than 500 kilometers per hour (300 miles per hour).