Ultrasonic Plastic Welding System converts the input frequency of 50/60 Hz to 20KHz and above, which in turn is supplied to Converter. The converter transforms this electronic energy into Mechanical Vibratory Energy. This Vibratory energy is delivered to a work-piece through a Sonotrode to generate localized frictional heat under pressure. This heat melts & fuses the work-piece interface creating a strong molecular bond (joint between two thermoplastic parts).

Construction of Ultrasonic Plastic Welding Equipment

Generator :The Generator is an electronic, power and frequency generating device, which converts energy from mains supply into required frequency (20 kHz and above) and power (300 W to 4000 W).
Converter : This is stack of PZT elements, sandwiched between metals masses, which converts electrical signal into mechanical vibrations.
Booster : The Booster transmits the mechanical vibrations to the Sonotrode and also amplifies the vibration amplitude to the required value at the Sonotrode tip.
Sonotrode : This is a tool, having specific designed shape and performs the following operations.

• Transmits vibrations
• Generates contact pressure
• Transforms the amplitude