Yellow PP → Natural PP

Colour change & carbon removal on 280 Tonnes Engel Injection Moulding Machine

The Process

Barrel Blitz Universal highlights yellow degradation

Screw and Barrel must be this
clean before moving to the hot runner

Increased hot runner tips by 20°C and moulded with Poly Clear HR20 till clean.

Moulded Poly Clear HR20 Moulded natural PP with reduced tip temps

Results

Normal results:

Stop running masterbatch
Run PP natural parts
3 hours colour staining/ gate scars Aquapurge results

Aquapurge results:

3 kg Barrel Blitz Universal (first carbon removal)
3 kg Poly Clear HR20
35 minutes

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