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The GMAK 420, is a new model of extruder that works through pellets (bulk plastic). It can perform welds of up to 5 kg/h with wall thickness between 10 – 40mm.

What materials can you weld?

  • Polyethylene (PE)
  • Polypropylene (PP).

This extruder model is available with or without brushes (at the customer’s choice).

The hot air blower, works brushless and the heating element is ceramic.


  • Welding nozzle
  • Air nozzle set
  • Maintenance kit (tools)


Technical specifications

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