Ultrasonic plastic welding is a process of joining thermoplastic materials by applying high-frequency acoustic vibrations to the parts being joined. An ultrasonic plastic welding machine typically consists of a power supply, a transducer, a welding horn, and a fixture or tooling. The power supply generates high-frequency electrical energy that is then converted to mechanical vibrations by the transducer. The welding horn amplifies the mechanical vibrations and applies them to the parts being joined, causing the plastic material to soften and flow together. The fixture or tooling holds the parts in place during the welding process.