High Frequency

High frequency

This unique process allows us to weld, laminate, and create a play of high and low reliefs on the material being processed.

Its peculiarity is the excellent mechanical strength given to the workpiece which, in a few seconds, thanks to an electromagnetic field applied by special machines, is melted and re-welded at the molecular level.

The high frequency takes advantage of the high frequency waves which are passed through the small area between the mold and the table in which the processing takes place; thus creating a high-frequency electromagnetic field that oscillates the molecules of some types of materials that are heated up to their melting point.

The combination of this "heat" and pressure makes whatever is being welded take the shape of the mold.


This process allows the high frequency to be used in a variety of areas in which the request is for a strong and constant bond. The only limit is that it can be used only with materials that contain molecules that can vibrate due to the alternating electric field, thus PVC (polyvinylchloride) and PU (polyurethane) are the most common thermoplastics to be welded with HF; however, it is also possible to weld other polymers such as nylon, PET, EVA and some ABS plastics.

Another great advantage of HF is its speed, since the material is heated from the inside outwards, melting takes place very quickly, often in just a few seconds.

The welding tool may be engraved to give a customized decorative appearance to the product. A cutting edge can be added to the weld area, allowing the machine to perform simultaneous cutting and welding operations and thereafter discard the residual scrap.