Described is an apparatus for packaging batches (1) of products packed in a
carton (2) or wrapped in a wrapping film (3), comprising: means (4) of grouping individual packs (5) of products in batches (1) of products; a lifting surface (6) to lift the batch (1) from a first height (Q1) for receiving to a second height (Q2) for introducing; an element (7) for pushing the batch (1), positioned at the second height (Q2), configured to move, in both directions, along a direction (D) of movement, between a retracted non-operating end position and an extended operating end position for pushing the batch (1) towards a zone loading (ZC) designed to be engaged by a
carton (2) to be filled; a connecting surface (8) for the sliding of the batch (1) interposed between the lifting surface (6) and the loading zone (ZC); the connecting surface having a pair of vertical side walls (9, 10) and an upper horizontal wall (11) in such a way as to form a tunnel (8); a
station (12) for feeding wrapping film (3); folding means (13) for supporting and guiding the wrapping film (3) wound round the outer walls forming the tunnel (8); first means (14) for longitudinal sealing of the film (3) configured to join two longitudinal flaps of the film (3) to form a tubular shape; second means (15) for transversal sealing the film (3) positioned close to the rear end of the tunnel (8) for joining the top and bottom flaps of the tubular wrapping film (3); a first pair of panels (16) connected to the connecting tunnel (8) for containing / retaining the batch (1)
coming out from the tunnel (8); the first pair of panels (16) having means (17) for their sliding along the side walls (9, 10), in both directions, in such a way as to modify the operating length of the tunnel (8).