A plastic film bottom bag having a bag opening and an opposite bag end, comprising - a plastic film front wall having a bag opening edge and a first side edge and an opposite second side edge, - a plastic film rear wall having a bag opening edge and having a first side edge and an opposite second side edge, - a first plastic film side wall having a bag opening edge and having a first side fold welded joint, extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end, comprising, on either side of the first side fold welded joint, a first and a second side wall section (18, 20), which in each case extend from the first side fold welded joint to the first side edge (4, 10) of the plastic film front wall and the plastic film rear wall respectively, - a second plastic film side wall having a bag opening edge and having a second side fold welded joint, extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end, comprising, on either side of the second side fold welded joint, a first and a second side wall section (26, 28), which in each case extend from the second side fold welded joint to the second side edge (6, 12) of the plastic film front wall and the plastic film rear wall respectively, and - a plastic film bag bottom having an inner side and an outer side, wherein a first bottom crease is present in the transition from the plastic film front wall to the plastic film bag bottom, and wherein a second bottom crease is present in the transition from the plastic film rear wall to the plastic film bag bottom, characterized in that, a first welded joint extends from a first merging point, in which the first bottom crease leads into the first side edge of the plastic film front wall, and the first side fold welded joint which ends at a distance from the plastic film bag bottom, and that a second welded joint extends from a second merging point, in which the second bottom crease leads into the first side edge of the plastic film rear wall, and the first side fold welded joint which ends at a distance from the plastic film bag bottom, and/or that a third welded joint extends from a third merging point, in which the first bottom crease leads into the second side edge of the plastic film front wall, and the second side fold welded joint which ends at a distance from the plastic film bag bottom, and that a fourth welded joint extends from a fourth merging point, in which the second bottom crease leads into the second side edge of the plastic film rear wall, and the second side fold welded joint which ends at a distance from the plastic film bag bottom. - a plastic film front wall having a bag opening edge and a first side edge and an opposite second side edge, - a plastic film rear wall having a bag opening edge and having a first side edge and an opposite second side edge, - a first plastic film side wall having a bag opening edge and having a first side fold welded joint, extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end, comprising, on either side of the first side fold welded joint, a first and a second side wall section (18, 20), which in each case extend from the first side fold welded joint to the first side edge (4, 10) of the plastic film front wall and the plastic film rear wall respectively, - a second plastic film side wall having a bag opening edge and having a second side fold welded joint, extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end, comprising, on either side of the second side fold welded joint, a first and a second side wall section (26, 28), which in each case extend from the second side fold welded joint to the second side edge (6, 12) of the plastic film front wall and the plastic film rear wall respectively, and - a plastic film bag bottom having an inner side and an outer side, wherein a first bottom crease is present in the transition from the plastic film front wall to the plastic film bag bottom, and wherein a second bottom crease is present in the transition from the plastic film rear wall to the plastic film bag bottom, characterized in that, a first welded joint extends from a first merging point, in which the first bottom crease leads into the first side edge of the plastic film front wall, and the first side fold welded joint which ends at a distance from the plastic film bag bottom, and that a second welded joint extends from a second merging point, in which the second bottom crease leads into the first side edge of the plastic film rear wall, and the first side fold welded joint which ends at a distance from the plastic film bag bottom, and/or that a third welded joint extends from a third merging point, in which the first bottom crease leads into the second side edge of the plastic film front wall, and the second side fold welded joint which ends at a distance from the plastic film bag bottom, and that a fourth welded joint extends from a fourth merging point, in which the second bottom crease leads into the second side edge of the plastic film rear wall, and the second side fold welded joint which ends at a distance from the plastic film bag bottom.