Ultrasonic welding assembly, for welding thin and flexible packaging materials, has an anvil with profiled sections moved by a drive across the direction of sonotrode movement, by less than the anvil width

摘要

The ultrasonic welding assembly, for welding flexible packaging materials, has an anvil (12) which is moved by a drive across the direction of sonotrode (10) movement. The movement path is shorter than the anvil width. The ultrasonic welding assembly, for welding flexible packaging materials, has an anvil (12) which is moved by a drive across the direction of sonotrode (10) movement. The movement path is shorter than the anvil width. The profile sections (13) of the anvil are at intervals, and the anvil movement path length matches the gap between the center axes of two neighboring profiles or, preferably, slightly more. Each profile section is tensed by a pressure spring (15), supported on a common holder.