Abstract: An envelope of at least two parallel layers (1a, 1b) of flat material, which are folded about a fold line (2), in which the envelope is closed on all the side edges and is delimited in a straight line on two side edges (3a, 3b), the layers on the two side edges (3c, 3d) lying opposite the straight side edges have a glueing region and at least one of these side edges is profiled, is characterized in that the two glueing regions run parallel throughout to the respective side edge and in a cohesive L-shaped region (4), one leg (4a) of which adjoins parallel onto the fold line, and that the other leg (4b) has a glueing region which does not reach up to the side edge (3c), so that on this side edge, before the folding of the envelope, a transport strip (5), running parallel to the glueing region, remains free of adhesive.