Aftercooling
Extrusion blow-molding of large hollow plastic bodies
Article REF: AM3646 V1
Aftercooling
Extrusion blow-molding of large hollow plastic bodies

Author : Serge Dupont

Publication date: April 10, 2013 | Lire en français

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8. Aftercooling

8.1 Dimensional changes during cooling

For economic reasons, the blown body is demolded at high temperature (> 80°C for HDPE). The temperature continues to rise for several tens of minutes, or even a few hours, before stabilizing at workshop temperature. This evolution is illustrated in figure 47 . At the same time, the temperature profile within the thickness of the part changes (figure 48 ).

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