Ultrasonic welding has been widely used in the sector of plastics and synthetic materials. Ultrasonic welders replace the traditional jointing methods with the use of solvents. Ultrasonic welders are formed by a generator......Ultrasonic welding has been widely used in the sector of plastics and synthetic materials. Ultrasonic welders replace the traditional jointing methods with the use of solvents. Ultrasonic welders are formed by a generator, a converter, the booster and the sonotrode. Sonic, which has long been on the market of ultrasonic welders, developed a range of "standard" systems to be used within the different product sectors that require this type of welding. For its own ultrasonic welding systems, Sonic manufactures a wide range of sonotrodes and boosters that must be used in the different types of welding. The use of the ultrasonic technology to weld plastics allows achieving varied results according to the different applications.