| 摘要 |
Automatic packaging machine, comprising a tubular forming element (1) into which the product (6) to be packaged is introduced and around which at least one layer of plastic film (2) for forming the packages (13) is wrapped; this machine comprises: forming means (7) for wrapping the film (2) around said tubular element (1) so that at least two strips (2′,2″) of said film are superimposed in the longitudinal direction (L); means (9, 91) for feeding said film (2) along said tubular element (1); at least one welding bar (11) able to perform a longitudinal weld of said superimposed strips of the film (2); said bar (11) is able to move at least in a transverse direction (T) towards or away from said tubular forming element (1); and movable units (14, 14′, 14″, 114) for transversely welding and cutting the film (2) in tubular form leaving said tubular forming element (1), said movable units (14, 14′, 14″, 114) being positioned downstream of said longitudinal welding bar (11) on at least two diametrically opposite sides of the film (2). |
