The radio frequency technology

Radio frequency technology (high frequency) is radio wave energy. At Kallesoe Machinery we use the authorized frequency of 13,56 MHz.

Radio frequency is generated in a radio frequency generator by converting energy from the electricity supply to radio frequency energy.

The energy from the radio frequency press can heat materials that contain bipolar molecules such as water, glue containing water/liquid, and different kinds of plastic.

Radio frequency generator

By using materials that are susceptible to radio frequency such as water or glue it is possible to create an oscillating process in which the molecules in the material are vibrating.

The heating happens when the molecules in the material are rotated by the radio frequency technology.

Read more about our radio frequency presses here.

The energy consumption during a RF process

A 200 kW generator only provides maximum output to the material for a brief period in every press cycle and the full energy consumption of the generator should therefore be considered for the entire production cycle and not just the peak pressing moment.

If required by the material, pre-heating is an option.


Safety is of the utmost importance to us. That is why all our installations are fitted with aluminum screens. This prevents electromagnetic radiation to the surroundings, so that the radio frequency exercises absolutely no danger to nearby persons. We always test our plants with special measuring devices to ensure that no radiation escapes.

Of course, we meet all safety regulations and standards for this type of equipment, including Derective 2013/35/EU “On the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields)”.

© Kallesoe Machinery