Vertical forming-confectioning machine for packs in atmosphere or under vacuum of granular products in bags of two or three layers laminate (polyester, aluminium, polyethylene) starting from film in rolls. Machine functions and weighings programmed and controlled by PLC with TOUCH-ON screen.Weighing system with load-cells and two vibrating-channels. The welding elements guarantee a perfect and uniform seal. Machine equipped with 2 vacuum bells. Device for punching 3 holes for handling. Machine complete of transport-belt on both sides. Support shaft for film-rolls with pneumatic locking. Film aligning with servo motors.