How to choose an ultrasonic welding machine
Ultrasonic welding is an industrial method where high frequency ultrasonic acoustic vibrations are applied to workpieces that are held together under compression to create a solid state weld. Ultrasonic welding is commonly used for plastics, and especially for joining unrelated materials. In ultrasonic welding, there are no connective rivets, bolts, nails, soldering materials, or adhesives required to fix the materials together.
To determine which size ultrasonic welding machine you need, first consider the size of the parts being welded. 15 kHz welding machines are for large size parts, 20 kHz welders are for medium size parts and 40 kHz welders are for small, delicate parts. The chart below can be used to determine which ultrasonic welding machine to buy based on the length, in inches, of the joints being welded.
If you need further assistance in sizing the correct ultrasonic welding machine, contact Toman ThermoSonics for help.
| ULTRASONIC WELDER | JOINT LENGTH IN INCHES |
| 40kHz-700watt | Up to 10″ |
| 20kHz-1,000watt | Up to 12″ |
| 20kHz-1,500watt | Up to 18″ |
| 20kHz-2,000watt | Up to 24″ |
| 20kHz-3,000watt | Up to 36″ |
| 15kHz-4,000watt | Up to 48″ |
Figures may vary depending on the polymer being welded.
