the same bag and method for manufacturing

The invention describes a bag (22) which (22) by first cross welded seams (11, 15) consists of a film tube (1) is formed and which (1) having at least a first ventilation duct (2) is provided, which largely parallel to the axis the film tube (1) and the inner (4) film layer first vent openings for venting the bag interior (21) into the first venting duct (2). It is characteristic that at least a second vent passage (14) is provided by second vent openings (9, 10, 20) is connected and in turn the third vents (12) with said first vent duct (14) connecting the at least one second vent passage (14) vent.