Abstract: A device for eliminating the trailing end of the film that is formed on wrapping machines for wrapping palletized loads when the reel of film is replaced, is of the type in which the wrapping machine is equipped with: a first, reel-holder, assembly, constituted by pre-stretching rollers driven by motor means, return idlers and a compensator arm; and a second, welding, assembly constituted by a gripper, welding means, and cutting means; the film sliding between the reel, said first assembly and said second assembly, and the load set on the pallet. Positioned between the reel and the first assembly is a mobile unit provided with a re-winding roller designed to press on the reel in operating conditions.

Abstract: A film changer apparatus changes the reel of extensible film in wrapping machines for packaging palletized loads. A supporting structure has an assembly for carrying the reel of the wrapping film and retains the free end of the film of a reel. Supporting structure is vertically movable between a wrapping position and a lowered position for changing a reel. A retainer provides temporary support of the free end of the film and is movable between two end positions. The automatic changer includes a release and expulsion device for the reel and for positioning the carriage for placing the reel into proper position. The changer also includes devices to position the spindles for carrying the reels to pick up the new reel from the carriage and transfer the free end of the film to be retained. The changer moves the support structure back to a wrapping position and moves the carriage to bring a new reel from the reel changer.

Abstract: A device for eliminating the trailing end of the film that is formed on wrapping machines for wrapping palletized loads when the reel of film is replaced, is of the type in which the wrapping machine is equipped with: a first, reel-holder, assembly, constituted by pre-stretching rollers driven by motor means, return idlers and a compensator arm; and a second, welding, assembly constituted by a gripper, welding means, and cutting means; the film sliding between the reel, said first assembly and said second assembly, and the load set on the pallet. Positioned between the reel and the first assembly is a mobile unit provided with a re-winding roller designed to press on the reel in operating conditions.

Abstract: An apparatus and a method for automatic change of the reel of extensible film in wrapping machines for the packaging of palletized loads consist in: expelling the reel (5) that has run out or is defective from the spindle (9) for carrying the reel (5) of the wrapping film, said spindle forming part of an assembly.