Patent ID: 8267580

Claim:
A free-standing bag made of a thermoplastic synthetic film, comprising: a front panel; a back panel; lateral seams connecting the front panel with the back panel, thereby forming a filling opening, and in a collapsed state the bag has an inwardly folded base, the inwardly folded base including a frontpanel fold and a backpanel fold, the frontpanel fold and backpanel fold being welded into the lateral seams; an assembly strip being attached to the frontpanel fold and to the backpanel fold, the assembly strip being formed of a more rigid plastic film than the plastic film of the bag, the assembly strip terminating at a first distance from the lateral seams; and a reinforcement strip being attached to the front panel and the back panel in an area of the filling opening on an interior and/or exterior side, the reinforcement strip terminating at a second distance from the lateral seams, wherein a value of the second distance of the reinforcement strip from each lateral seam is at least that of a height of the base fold in a collapsed state.