The invention describes a machine for forming, filling and sealing (FFS) sacks (8, 11). As device characteristics, it covers an unwinding device (19) for a plastic tube (15), a cross-cutting device (17) that cuts the tube perpendicularly to its principal axis of symmetry and creates tubular pieces in the process, a bottom forming means (13) for forming a sack bottom at one end of the tubular piece, transport equipment (4, 10, 18) to transport the resulting sacks through the machine, a filling station with a feeding element (2) for filling the product (24) in the sack (8, 11), means (3, 4, 5) of reducing the distance between the product discharge opening of the feed element and the bottom of the sack to be filled as well as sealing means to seal the filled sack. In this context, the means (3, 4, 5) of reducing the distance between the product discharge opening (31) und the bottom of the sack to be filled covers a sack lifting device (3, 4, 5) with which the sack (8, 11) can be lifted in the filling station in such a way that its upper edge (25) is located above the product discharge opening (31) of the feed element (2).