Coperion ZSK26 compounding extruder

Recycling pilots

Compounding and pelletization

Processing trials on Coperion ZSK26 compounding extruder.

Set up:

  • Twin screw, co-rotating, intermesh
  • 10-80 kg/h
  • L/D 40
  • Rpm 120 – 1800
  • 3 + 2 Feeders, one side feeder
  • String pelletizing

Added features

  • N²,  Ventilation  (degassing)
  • Vacuum unit
  • Liquid feeding

Nordson Melt filtration

  • Continuous melt filtration
  • Mesh flexibility

 

Performance testing

Polymer characterization

  • Volatile components
  • Odour
  • Head space, unknown components
  • Molecular characterization
  • Gels & polutions
  • Visual inspection

Application processing

  • Injection moulding
  • C&C, Thin Wall, General injection moulding
  • Film extrusion
  • Blown film, Cast film, Sheet
  • Bottles HIC (Household Industrial Chemicals)
  • Thermoforming
  • Appliances, Packaging

Application performance tests

  • Std tests
  • End-use tests (e.g. cap hinge performance)

Processing trials and results

Processing results

  • Torque
  • Pressure
  • Energy
  • Melt temperature
  • Output
  • Flow characteristics

Process parameter optimisation

  • Machine pressure, temperature and speed requirements
  • Processability evaluation
  • Material evaluations
  • Evaluation of recycled material
  • Quality improvement
  • Tests at industrial relevant conditions
  • Raw material quality and consistency

Test volume production

  • Compounded PCW
  • Modified PCW/PCR
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