Welding apparatus for multi-layer plastic films, has welding plate having raised structure with cutting edge, which is arranged between welding sonotrode and counter tool

摘要

The apparatus (10) has an ultrasonic welding sonotrode (18) and a counter tool (22). A welding plate (26) is arranged between the welding sonotrode and the counter tool such that plastic film of multiple layers is arranged between the welding sonotrode and weld metal and between the welding plate and counter tool. The welding plate has a raised structure (30) with cutting edge.