Ultrasonic Welding Plastic

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

Ultrasonic welding plastic.

The friction between the molecules heats and melts the plastic. Ultrasonic welding uses high frequency vibration to melt and weld plastic. It is accomplished by converting high frequency electrical energy into high frequency mechanical motion. Ultrasonic welding of plastics material suitability guide.

That mechanical motion along with applied force creates frictional heat at the plastic. Ultrasonic welding is an industrial process whereby high frequency ultrasonic acoustic vibrations are locally applied to workpieces being held together under pressure to create a solid state weld it is commonly used for plastics and metals and especially for joining dissimilar materials in ultrasonic welding there are no connective bolts nails soldering materials or adhesives necessary to. Welding of plastics using ultrasonics. A tool vibrates at ultrasonic frequencies and causes concentrated molecular vibration in the weld joint.

This means incorporating an energy director into your ultrasonic welding plastic design. It is frequently chosen when parts are too complex or expensive to be molded in one piece in ultrasonic plastic welding a vibratory motion at the horn face amplitude is transferred to the part. Ultrasonic welding of plastic materials creates a molecular bond within the weld seam. Ultrasonic plastic welding is the joining or reforming of thermoplastics through the use of heat generated from high frequency mechanical motion.

An energy director is a raised region with a triangular cross section. Longitudinal vibrations in frequencies of 20 khz 30 khz and 35 khz with tool amplitudes between 5 µm and 50 µm are introduced into the plastic materials under the action of force. 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. When combined with pressure friction produces heat melts the parts at the horn contact point.

Ultrasonic welders branson dukane models and tooling for plastics joining clam shell sealing staking insertion degating film sealing corrugated welding.