Ultrasonic welding device

摘要

The ultrasonic welding apparatus comprises a sonotrode (8) and an anvil (7). Foils are provided, which are arranged between a working plane (11) of the sonotrode and a working plane (12) of the anvil and a receiving slot (6). The direction of the gravity is opposite to the component of the force application and the force is applied at an angle of more than 70[deg] , preferably 88[deg] in direction of force of gravity. The working planes of the sonotrode and anvil runs parallel to the direction of the gravity. An independent claim is also included for a device for handling foil bags, which comprises a conveyor for delivering filled foil bags and an ultrasonic welding apparatus for locking the foil bags.