Plastic Assembly PP PE Spin Welding Machine employs rotary frictional tech for joining two thermoplastic parts together, forming a molecular bond. The weld is achieved via the friction created by rotating one part half against a fixed mating part half while under a clamped load. Once the rotation stops, the parts are held together for a short time to solidify the bond. Naturally, the joint between the two components to be welded must be circular.

This machine consists of an actuator that contains the motor for rotation, either a pneumatic cylinder or electric motor to supply the weld force, and a controller that manages the actuator movement, rotation, and other weld parameters. It offers high-stretch hermetic seals and relatively short welding time. The process is not as material-specific as ultrasonic welding, allowing most thermoplastics to be processed, including materials from different molding processes like injection molded parts to extruded or blow molded components.

Important Precautions: Parts joint must be on a circular axis. Determine whether final orientation of parts is required. Joint design must take into account flash/particulate produced during the process. Ideally, the upper part half should be designed for use with drive features. The parting line should be parallel to the force applied by the driver. Sufficient collapse distance is required to ensure weld strength.

This equipment applies thermoplastic bonding for parts with circular joining interfaces across various fields:

• Automotive: Fuel system filtration, air ducts, filter bowls, and oil fill tubes.
• Appliance: Water valves, refrigeration water filtration, and toilet components.
• Irrigation: Sprinkler components.
• Medical & Beverage: Syringes, dispensing cups, and spherical containers.