Processing Machinery
3 views
Random copolymer polypropylene pipe special material (Nordic standard） PE raw material wide temperature window causing process parameter optimization difficulty（Variant: Strengthened Measures）
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.In particular, extra attention is needed on top of the original basis, this problem is more prominent and requires key attention.
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\
（6）On top of the original basis, extra attention is needed: process parameter fluctuations or equipment status changes aggravate this problem
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\
（6）And strengthen process monitoring; on top of the original basis, extra attention is needed, paying special attention to parameter stability
Key Takeaway
PE temperature window optimization needs to be advanced from two aspects: systematic experiments and experience accumulation.Targeted preventive measures need to be taken in different production scenarios.
Was this helpful?
0 people found this helpful
Thank you for your feedback!