Sustainability 12. July 2024

The fact that we at Freek have learnt our trade in 70 years of manufacturing heating elements is demonstrated by our well-known and loyal customers in the various fields of application. Especially in the field of hot runner heating we count ourselves among the technology leaders and supply the who-is-who of the industry. Here, too, energy efficiency is becoming increasingly important, which is hardly surprising since there is a trend towards ever more compact, high-cavity and thus more efficient moulds, where even a few per cent of heating energy saved at the individual nozzle heater add up noticeably. Not only that, because less energy is brought into the system and less has to be extracted from the cold mould side. This saves even more energy and, not least, reduces the cycle time.

Here is a calculation example:
A mould manufacturer produces injection moulds with a total of 10,000 cavities per year, i.e. an equal number of nozzles. The energy-optimised Freek heaters with a rated power of 250 W run with an output level of 25% in regular operation. In contrast, competitors' heaters, which also have a rated power of 250 W, must be operated with 28% output level in order to achieve the same nozzle temperature. Assuming 24/7/50 operation, the following calculation results and thus annual energy savings:

0,25 kW x (0,28 – 0,25) x 24 h x 7 x 50 x 10.000 = 630.000 kWh

This is equivalent to an average power consumption of:

630.000 kWh / 4.200 kWh = 150 four-person households

In other words, with energy-optimised Freek heaters with just 10% less energy consumption, you can save the energy consumption of an average four-person household every year on a 64-cavity injection mould.

Minimal consumption. Maximum power.
Why this example? Because we believe we can do just that: to make your heaters 10% more energy efficient.