| 摘要 |
The apparatus has an ultrasonic source with an ultrasonic hammer (9) and an anvil (8). A press is arranged to provide a pressure on a part of foil sheets (3a, 3b) of a foil bag (1) proximate the ultrasonic source to create weld seams (2) on the foil bag. The anvil includes a weld side with a projection (10), where a portion of the foil bag is clamped between the projection and the ultrasonic source, and the projection includes one depression (11). An independent claim is also included for a method for producing a weld seam on a foil bag. |
