Extrusion Blow Molding HDPE: Colour Change with EasyPurge Purging Compound
Blow Molding: HDPE BLACK TO HDPE NATURAL
Goal: Downtime reduction
Machine: Mateu & Sole (Spain)
Extruder Diameter: 120mm
Colour: Black to natural
Blow Molding HDPE: Normal results using virgin material
Time: 8:30 Hours
Virgin Material: 960 Kgs of HDPE
Using EasyPurge Purging Agent:
Time: 3:00 Hours
EasypurgeAPC: 1,2 Kgs
Virgin Material: 135 Kgs of HDPE
First we increased the temperature of the accumulator by 30 °C to improve the efficiency of the purging compound.
Previous production of Black HDPE suitcases. →→→→→→→→→→→
Although we could have used the doser built in the bottle, to automate the procedure, we decided to use Easypurge APS (Automatic Purging System) device for dosing 1.2 Kgs of Purging Compound.
The purging agent emulsifies the impurities and colour pigments.
Learn more about how Easypurge works
After 3 hours there was no presence of colour contamination.
24 hours later we confirmed there was no presence of black contamination during the next two shifts.
Blow Molding HDPE: Summary
Comment by the Process manager:
“The dose of Easypurge purging compound was easy using the Automatic Purging System, we have had cleaning process under control at all time”