Abstract: A packaging device, particularly for foodstuffs or technical materials, comprising a bell-shaped vacuum chamber. A single-folded film can be placed in the vacuum chamber and the foodstuff can be inserted from the open longitudinal side of the film. Inside the bell-shaped vacuum chamber there is also provided a first transverse thermal bonding bar, which is laterally adjacent to a cutting blade, and a second thermal bonding bar, both bars being L-shaped. At least one nozzle for introducing gas is furthermore provided so as to face the longitudinal or transverse open side of the single-folded film.