Processing Machinery
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Random copolymer polypropylene pipe special material (Nordic standard） PE raw material wide temperature window causing process parameter optimization difficulty
Problem Phenomenon
PE-type materials have a wide processing temperature range (200-220°C), and in actual operation there is no basis for how to select the optimal temperature.
Improper temperature selection harms energy consumption, product quality and production efficiency.
Cause Analysis
（1）Different PE grades have different optimal processing temperatures\
（2）Temperature setting lacks a systematic method\
（3）Operators set the temperature based on experience\
（4）The temperature is not optimized according to product characteristics and quality requirements\
（5）The matching relationship between temperature and screw speed is unclear
Solution
（1）Establish a processing temperature database for each PE grade\
（2）Optimize the temperature of each section through design of experiments (DOE)\
（3）For thin-wall products, appropriately increase the temperature to improve flowability\
（4）For thick-wall products, appropriately lower the temperature to reduce shrinkage\
（5）Standardize temperature adjustment records, establish an archive of optimal process parameters
Key Takeaway
PE temperature window optimization needs to be advanced from two aspects: systematic experiments and experience accumulation.
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