Horizontal packaging machine including an unwinder with a splicing device for changing reels without stopping the machine, and a band supply unit applicable to said machine

摘要

The machine includes a band supply unit (100) with a splicing device (50) comprising a splicing table (9) on which a working band of sheet material (1) coming from a reel (6) circulates, an adhesive tape supply device (11) adjacent to an edge of the working band of sheet material (1), and holding devices (12, 13) for holding the end portion (1a) of the working band of sheet material (1) and an initial portion (2a) of a replacement band of sheet material (2) mutually superimposed on the splicing table (9), in which both are cut transversely at the same time by a cutting tool and, once excess cut portions are removed from both bands (1, 2), they are butt spliced by means of adhesive tape supplied from said adhesive tape supply device (11).