HF welding is the fastest and the best quality of plastics bonding processes.

HF / RF welding is a process of bonding non-conducting thermoplastics materials by supplying electric field energy usually at a frequency 27.12 MHz and pressure applied by press. In this process, the applied high-frequency voltage increases the amplitude of the pulsation of molecues of the material being welding, what caused directly increasing the temperature of the material until it reaches the semi-liquid state. For the HF energy transfer and pressure are responsible electrodes(on the upper and lower tool) with the shape which corresponds to the required welding seam. The whole process takes only a few seconds. Aa a result, we have a homogeneous joint with high strength, hermetic and aesthetic appearance. The weld seam can be at least as strong as the surrounding material - or even stronger.

HF or RF welding is a process of bonding non-conducting thermoplastics materials by supplying electric field energy.

High-frequency voltage increases the amplitude of the pulsation of molecues of the material being welding

Molecules starts moving, generating heat. Material becomes plastic and allows to mold.

When the sealed surface is cooled down, we receive a strong, crystal clear weld.


The great advantage of HF welding is the speed and quality of the welding:

The highest temperature is created inside the material, the lowest on the pressing surfaces of the electrodes. In conventional(temperature) welding (heated electrodes) is the opposite - the highest temperature is formed on the surfaces of the electrodes, and the lowest in the material welded.

You could compare this to heating your food in the microwave oven vs in a traditional oven.

Finding the optimal process parameters will depend on your specific equipment, the materials involved and the specific geometries including thichkness and area to be welded.

We can support you with above process - our experienced team can support you in process adjustments.