Black Regrind PP → White PP

Colour Change and Carbon Removal
on 1300 Tonnes MAICO

Carbon visible in Poly Clear 100 purge

Stripes shown from mixing nozzle

Barrel Blitz Universal bringing out carbon contamination

65 kg of BBU (left and central)
First Purge of Natural PP (Right)

  • 1st shot (Top Left)

  • 2nd an 3rd shot (Bottom Left)

  • Total: 3 scrap (Right)

45 minutes purging + 20 minutes moulding 8 shots:
2 scrap parts for colour from the hot sprue bush

Results

Normal results:

  • 6 hours total
  • Purge 100 kg of PC/PP GF
  • Nozzle pull and clean
  • 4 hours moulding (360 kg)
  • 20 years since last screw clean

Aquapurge results:

  • 45 minutes purging
  • 15 kg Poly Clear 100
  • 65 kg Barrel Blitz Universal (first deep clean)
  • 2 scrap mouldings

One Year On:

  • 15 kg Poly Clear 100
  • Barrel Blitz Universal once/year
  • 10 minutes change

You can also read this Case Study here