| 摘要 |
The invention relates to an apparatus for producing a weld seam 2 on a foil bag 1 with an ultrasonic hammer 9 and an anvil 8 with a weld side directed towards the ultrasonic hammer 9, said weld side having a long projection 10, so that the foil material 3a, 3b, 6a, 7a, 7b of the foil bag 1 can be clamped between the projection 10 and the ultrasonic hammer 9, wherein the projection 10 has at least one depression 11 running parallel to the projection 10. The invention furthermore relates to an apparatus for producing weld seams on foil bags, wherein more than one of the above apparatuses are arranged next to one another and can be activated synchronously. The invention furthermore relates to a method for producing a weld seam 2 on a foil bag 1, wherein the foil bag 1 is clamped between an ultrasonic hammer 9 and an anvil 8, wherein the anvil 8 has a long projection 10 on a weld side directed towards the ultrasonic hammer 9, and the foil bag 1 is provided with a weld seam 2 by means of ultrasound, wherein the projection 10 has at least one depression 11 running parallel to the weld seam 2. The invention also relates to a foil bag (1) with a weld seam (2), wherein the weld seam (2) has at least two weld zones (12,13) and at least three or four sealing wedges 14a, 14b, 14c and 14d. |
