Machine for wrapping one or more bundles with stretch film from a reel with continuous suction

A machine for wrapping one or more bundles with stretch film from a reel with continuous suction comprising:

• at least one wrapping unit including at least one ring wrapping machine which, on rotating, arranges stretch film around the one or more bundles, wherein said film is unwound from a reel arranged on a rotating ring of said ring wrapping machine and is caused to be arranged around one or more bundles, during transiting of the bundles in the wrapping unit,
• a pre-stretching group of the stretch film which generates an axial deformation of said stretch film which is being unwound from said reel and is passed through said pre-stretching group,
• a vacuum box which continuously receives said stretch film having said axial deformation generated in the pre-stretching group, wherein said vacuum box has a volume within which the film moves and keeps the axial deformation generated in said pre-stretching group as said stretch film passes forwards inside the vacuum box substantially constant,
• wherein said vacuum box is arranged downstream of said pre-stretching group and both the pre-stretching group and the vacuum box are arranged on said rotating ring around said one or more bundles,
• a magnetic track which is associated with said rotating ring and rotates and causes a wheel or disc to rotate with a magnetic track, which create a magnetic transmission, the shaft of said wheel or disc with a magnetic track is supported in said pre-stretching group and actuates at least one rubberized roller on which said film passes,
• a dynamo on board the rotating ring connected directly to the magnetic transmission and connected to batteries,
• a vacuum pump motorized in on board the rotating ring connected to the vacuum box and to said batteries.