Ultrasonic welding is a joining process in which thermoplastics are bonded together. The two parts being joined do not have to be made of the same thermoplastic material. The ultrasonic vibrations cause friction between the touching surfaces. This generates heat, which causes the material to melt. Ultrasonic welding is characterized by fast process times and high process reliability. In addition, no additives or solvents are required.
For ultrasonic welding, standard lifting machines with component-specific changing devices are frequently used. The number and positioning of the sonotrodes on the fixture are individually adapted to the application. For high surface requirements, a foil tension can be integrated, which ensures a pressure-free welding. Due to the change-over devices, different components can be produced on the same machine with minimum set-up effort.