Ultrasonic Welding

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What is Ultrasonic Welding

Ultrasonic welding machine is a method of joining thermoplastic resin by melting it with ultrasonic vibration while applying pressure.

The ultrasonic welding machine consists of the ultrasonic generator that creates high frequency alternating current and generates electrical energy, the oscillator that converts the electrical energy into mechanical vibration frequency and amplitude, the press unit that applies the pressure, and the horn that applies the vibration and pressure to the object to be joined.

Ultrasonic welding is suitable for mass production because of its short welding time (around 1 second) and easy integration into automated machines. It can also perform airtight welding without the use of adhesives or solvents.
It is used to process large containers for automobiles, home appliances, etc., as well as food and medical packages.

Features of Ultrasonic Welding

Ultrasonic welding is used in variety of fields, including automotive, electronics, packaging, textile, and medical.

In addition to welding, it is used for cutting, caulking, and gate cutting by utilizing ultrasonic vibration.

It is important to select an ultrasonic oscillator, horn, and jig that oscillate at the appropriate frequency for object to be processed.

Application examples

  • Caulking of door trims for automobiles
  • Welding of cases that require airtightness
  • Welding and fusing of food packaging forms
  • Assembly of fans for air conditioners, etc.
  • Cutting of cardboard

Ultrasonic Welding Machine Products

The ultrasonic welding machine consists of the ultrasonic generator that creates high frequency alternating current and generates electrical energy, the oscillator that converts the electrical energy into mechanical vibration frequency and amplitude, the press unit that applies the pressure, and the horn that applies the vibration and pressure to the object to be joined.

Nippon Avionics offers ultrasonic generators and press unit that generate frequencies that match objects to be welded or cut. We also design and manufacture horns that match the objects.

Applications of Ultrasonic Welding

Actual examples of micro joining are introduced by video and im

Other Joining Method