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Ultrasonic Welding

Ultrasonic Welding is a welding method typically used on plastics. Ultrasonic welding joins two pieces of plastic by creating friction, and thus heat, between the two parts and applying pressure. This friction is caused by ultrasonic sound vibrations. It is typically used in procedures where the two parts to be joined are too small, complex, or fragile to be joined using other methods. Possible applications for ultrasonic welding include automotive applications, cosmetics, computers, domestic appliances, the toy industry, medical applications, electronics, textiles, packaging, and the food industry. Ultrasonic welding depends on the geometry of the parts to be welded. Since ultrasonic welding does not use any materials beyond the two welded pieces of plastic, it is a highly efficient process.

In an ultrasonic welder, the two parts to be welded are placed between an anvil and a sonotrode, or "horn". The horn, connected to a transducer that converts an electric control signal into mechanical motion, delivers ultrasonic energy to the plastic parts. Ultrasonic welding depends on the geometry of the parts to be welded. At points at the interface of the two parts that have been engineered specifically for ultrasonic welding, the ultrasonic vibration causes enough friction to generate the heat required to melt the plastics and cause a weld. After the plastic cools, the result is a strong and lasting bond.

Plastic Assembly Systems offers a large range of ultrasonic welders and ultrasonic welding equipment including ultrasonic horns and tips for ultrasonic welding. We manufacture horns, amplitude boosters, and converters in 15 kHz, 20 kHz, 30 kHz and 40 kHz from high-grade alloys. We offer both standing models and hand held pistol ultrasonic welders. We also have a large stock of used ultrasonic welding units and accept trade-ins during the purchase of a new ultrasonic welding unit. Plastic Assembly Systems also has a leasing program for ultrasonic welders.

 

 

 

 

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