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Freek with novelties at K 2019 - Next Generation Cartridge Heaters and Nozzle Heaters - 11.09.2019

German-based heating element specialist Friedr. Freek presents two novelties at K-Show from 16. to 23. October in Duesseldorf. Their square cartridge heaters and alternative nozzle heaters convince by numerous mechanical, economic and ecological advantages (hall 11 / A01).

For heating metal plates or surfaces to temperatures higher than 200 °C common round cartridge heaters and tubular heaters mostly are the means of choice. The latter are normally pre-bent, then installed into grooves and finally cast in heat conductive compound. This procedure is complex and for small quantities very expensive. The same applies for deep-hole bores for cartridge heaters.

Heating plates with square cartridge heaters

Freek has dealt with this difficulty and developed soft, malleable square cartridge heaters. These don’t have to be pre-bent but can be processed straight and laid and pressed into rectangular grooves with simple tools. Doing so is economic also for the production of small quantities and the same time thermally highly efficient.

The advantages are obvious:

  • Simple plate manufacture due to rectangular groove geometry, no deep-hole drilling
  • Simple heater installation by bending and pressing along the plate surface
  • Complex plate geometries with bores and openings
  • Optimal heat transfer due to 75% surface contact
  • No casting with heat conductive compound
  • Uniform temperature profiles due to thermally optimized groove layouts
  • High process temperatures up to 700°C
  • Square Cartridge Heaters also available with integrated thermocouple and power distribution

Saving energy with nozzle heaters

In addition to the square cartridge heaters the German heating experts focus on energy-efficient nozzle heaters at K-Show. In fact Freek has gained valuable knowledge from recently conducted experimental studies on the energy saving potential of alternative nozzle heater constructions. Freek illustrates this topic to the K-Show audience at the example of an Otto Hofstetter 48-cavity PET hot runner. This exhibit definitely will attract quite some attention on the Freek stand (halle 11 / A01).

Square Cartridge Heaters for Heating Plates and Hot Surfaces
Square Cartridge Heaters
for Heating Plates and Hot Surfaces
Otto Hofstetter powered by Friedrich Freek – 20 years Swiss-German co-operation for highest precision, durability and energy efficiency
"Otto Hofstetter powered by
Friedrich Freek" – 20 years
Swiss-German co-operation
for highest precision, durability
and energy efficiency

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