RMPP141 requires adjustments to the processing used for Polyethylene


Oven Temperature – Actual air in oven300oC280oC to 315oC570oF540oF to 600oF
PIAT225oC220oC to 235oC440oF435oF to 445oF
Mould External Surface Temperature245oC240oC to 260oC475oF465oF to 500oF
RotationSimilar to LMDPE.
Oven TimeAbout 10% more than LMDPE – 1 minute per 0.25 mm (.01 inch) of wall thickness.
CoolingDelay airflow onto mould for about 5 minutes after removing from oven. Then fan-air cool.
DemouldCrystallizes 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.
ShrinkageAbout 1.5%  (1.5% to 2.5%) or 1% less than LMDPE.
SuperventsAre known to improve processing and product appearance.
For a detailed explanation of processing conditions including:


Oven Conditions, Cycle Time, Venting, Shrinkage & Colouring:  RMPP141 Processing Guide  

USA: RMPP141 Processing Guide for USA 

Processing Problems: Report Form

Processing Guidelines & Technical Data Sheets