Oven Temperature – Actual air in oven | 300oC | 280oC to 315oC | 570oF | 540oF to 600oF |
PIAT | 225oC | 220oC to 235oC | 440oF | 435oF to 445oF |
Mould External Surface Temperature | 245oC | 240oC to 260oC | 475oF | 465oF to 500oF |
Rotation | Similar to LMDPE. |
Oven Time | About 10% more than LMDPE – 1 minute per 0.25 mm (.01 inch) of wall thickness. |
Cooling | Delay airflow onto mould for about 5 minutes after removing from oven. Then fan-air cool. |
Demould | Crystallizes at about 125oC (255oF). Can be removed at anywhere below 115oC (240oF). Care should be taken when handling hot materials and products (refer to RMPP141 MSDS). Optimisation of the moulded part will take up to 72 hours after demoulding, due to continued crystalisation. |
Shrinkage | About 1.5% (1.5% to 2.5%) or 1% less than LMDPE. |
Supervents | Are known to improve processing and product appearance. http://laplastecnica.co.nz/products/ |