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)
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2nd an 3rd shot (Bottom Left)
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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