Plastic spin welding is used to weld thermoplastic parts with rotationally symmetrical joining surfaces.

The welding of the two parts is due to the simultaneous application of rotation and pressure. Thus, the friction obtained generates the heat necessary for their melting and fusion. This process ensures a precise, durable weld (high mechanical strength) that is perfectly waterproof.

The quality of the weld is the result of several elements:

• the perfectly controlled speed of movement between the two parts to be welded,
• calculation of the friction coefficient of materials,
• finally, control of the pressure exerted during welding.

Ultrasound welding is also suitable for welding very thin parts.