Web of plastic bags

Claim 1

A web of a plurality of interconnected valve free plastic bags (27) with gusset folds formed from a tubular foil, at least comprising a central (4, 4a) and two outer longitudinal gusset fold edges (2, 3, 2a, 3a) which bound a first and a second gusset fold part, each bag (27) of said web being open at one end opposite a transverse bottom seal (12) and further comprising: (a) two first fold part seals (8, 9; 10, 11) at both sides of the web foil, which first fold part seals always connect an outer foil layer (1a, 1b) with an opposite gusset fold part (6a, 5a; 6, 5) said first fold part seals extending between the central (4, 4a) and outer longitudinal fold edges (2, 3; 2a, 3a) in the region of said transverse bottom seal (12) and diverging from said bottom seal (12) to the outer fold edges (2, 2a; 3, 3a), (b) second fold part seals (13, 14; 15, 16) at both sides of the web foil which second foil part seals always connect an outer foil layer (1a, 1b) with an opposite gusset fold part (6a, 5a; 6, 5) said second fold part seals extending between the central (4, 4a) and outer longitudinal fold edges (2, 3; 2a, 3a) at the end of the bag remote from the transverse seal of this bag, said second fold part seals converging from the outer longitudinal fold edges (2, 3; 2a, 3a) to the transverse seal (12) of a subsequent bag (27) characterized in that at both sides of a bag an additional seal (30) extends substantially parallel to the fold edges and in the region between inner and outer fold edges, said additional seals (30) being connected with the second fold part seals (13, 14; 15, 16) and extending from said second fold part seals towards the transverse bottom seal (12) of a subsequent bag (27).