Abstract: This machine has a tunnel traversed axially by fabric rope, itself disposed inside a chamber supplied with pressurized air from an enclosure which is, disposed inside the machine and contains a centrifugal fan. The tunnel communicates with the chamber (12) through at least one opening which is inclined with respect to the axis of the tunnel in the direction of movement of the rope.

Abstract: A machine for wrapping cylindrical articles in a thermally weldable web has an automatic changeover system for webs of different widths in response to the detection of articles of different lengths. The system automatically guides the free end of a new web downwardly by a deflector connected to the upper jaw member of a double-welding system in which pairs of electrodes are energized to form two seams when successive articles are to be wrapped with the same web but where a new web is to be used, only a single seam is formed and the clamped end of the previously used web is cut away while the balance of the previously used web is rolled up again.

Abstract: A dyeing machine is provided along the drive withdrawn from a storage zone for the web with a monitor of the continuous displacement of the web and, therebelow, a mechanism for applying traction controlled by the web-advance monitor. The tractive mechanism can be a ring normally traversed without contact by web and rotated about a diametral axis to apply traction or a pincer which is clamped on the web and then raised to apply traction.