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For automobiles, ultrasonic welding tends to be used to assemble large plastic and electrical components such as instrument panels, door panels, lamps, air ducts, steering wheels, upholstery and engine components. As plastics have continued to replace other materials in the design and manufacture of automobiles, the assembly and joining of plastic components has increasingly become a critical issue. Some of the advantages for ultrasonic welding are low cycle times, automation, low capital costs, and flexibility. Also, ultrasonic welding does not damage surface finish, which is a crucial consideration for many car manufacturers, because the high-frequency vibrations prevent marks from being generated.

The ultrasonic welding process enjoys worldwide success due to its technical, economic and ecological advantages. SuperUltrasonic represent the best in both expertise and products for ultrasonic metal welding. The ultrasonic welding process takes place in a solid state, without any melting of the parts being joined. This is accomplished by overlapping the weld metals and rubbing them against each other using low pressure, and high frequency mechanical oscillation. Within a fraction of a second, a permanent , solid and metallurgically pure connection, with outstanding physical properties, is created. As a rule, all non-ferrous metals are suitable for this joining technique, however, copper, aluminum and their respective alloys are particularly well suited.