Ultrasonic Welding Plastic

In ultrasonic welding it s important to focus the energy in as small a region as possible.

Ultrasonic welding plastic.

Ultrasonic welders branson dukane models and tooling for plastics joining clam shell sealing staking insertion degating film sealing corrugated welding. Once it stops hold pressure bonds and cools the weld joint. This means incorporating an energy director into your ultrasonic welding plastic design. The process of ultrasonic welding of plastics is achieved by applying a vibrating metal tool horn at 90 to the stationery plastic parts which then vibrate.

An energy director is a raised region with a triangular cross section. The triangle tip is pressed against the mating plastic part and ultrasonic energy applied. A tool vibrates at ultrasonic frequencies and causes concentrated molecular vibration in the weld joint. The friction between the molecules heats and melts the plastic.

Ultrasonic plastic welding is the joining or reforming of thermoplastics through the use of heat generated from high frequency mechanical motion. It is accomplished by converting high frequency electrical energy into high frequency mechanical motion. Ultrasonic welding of plastics material suitability guide. Ultrasonic welding uses high frequency vibration to melt and weld plastic.

Ultrasonic energy has been used to join thermoplastics for over 70 years. That mechanical motion along with applied force creates frictional heat at the plastic. Ultrasonic welding of plastic materials creates a molecular bond within the weld seam. When combined with pressure friction produces heat melts the parts at the horn contact point.

Welding of plastics using ultrasonics.