Home > Heger machines for volume reduction and plastic foam recycling available from Maleplas International

Heger machines for volume reduction and plastic foam recycling available from Maleplas International

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Heger machinery, manufactured by Heger and available from Maleplas International , has been specifically designed for applications including coarse granulation, screw compaction and densification of scrap or waste EPS foam.

The benefits of the Heger equipment include:

  • The incorporation of German technology
  • Avoidance of hydraulics usage
  • Simple installation procedures
  • Easy, clean, safe and low noise operations

These equipment possess lightweight construction and known for durability.Different features of the Heger equipment are: 


  • The overall construction of the HEGER machinery is much stronger than many other machines.
  • Each pre-breaker shaft is driven by a separate gear motor. Other machinery builders might use one gear motor to drive two shafts.
  • HEGER use two 3.0 kW motors on the SZ 1000 N and two 4.0 kW on the SZ 1000 NB.
  • HEGER use fixed bars and moving bars to break the foam into small pieces, approximately 1.5 to 2”. Other styles of machinery might use moving bars only so the pre-broken pieces can be much larger.
  • The smaller pre-broken EPS pieces from HEGER are better for silo operations. Larger EPS pieces create more bridging problems in the silo.
  • HEGER’s broad range, offers 10 different pre-breaker sizes from 550mm to 1800 mm in width.
  • HEGER can produce all 10 sizes of pre-breakers with special teeth, heavier drives and stronger gear motors for special applications such as high density EPS, EPE and EPP foams, and mixed material such as EPS with a High Impact PolyStyrene (HIPS) film.
  • HEGER make pre-breakers to break the compacted logs back into small pieces for feeding into an extruder.
    The noise emitted from the HEGER Pre-crushers is low compared to similar machines on the market.


  • Strong overall construction.
  • Stainless steel compression tube is standard. This allows the compaction of ’wet’ parts without problems. There is a lot of scrap EPS stored outside and is wet when it reaches the compactor. The moisture will create a fine layer of corrosion on a plain steel tube. This corrosion creates tremendous friction in the tube, erratic operation and meltdowns.
  • No hydraulics to maintain HEGER use electrically driven motors, even at the Auto Density Control (ADC). Others use a hydraulic drive to adjust the backpressure on the log.
  • The same high densities are possible, up to 300 g/l³ with the ADC.
    HEGER have an automatic log breaking feature, whereby the operator can set the desired length of log, and the logs will be automatically broken at that point.
  • HEGER use a self-contained water cooling unit on the discharge tube to regulate temperatures created during compaction. While in use, a screw compactor produces heat from the friction of the screw on the EPS and the EPS on the tube. The temperature will continue to rise over time and eventually reach the melt point of the EPS at the screw. If the screw compactor is run for a short period of time (60 – 90 minutes) and then allowed to cool for a couple hours, then no cooling is required. If the operation is to be more continuous, a cooling unit is needed to regulate the tube temperature.

Switchgear Cabinet:

  • HEGER use the Siemens “LOGO” PLC for controlled functions.
  • LOGO parameters can be adapted to special customer requirements.
  • Control operation is simple with on/off switch and selector switch for ADC settings.

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