Processing Machinery
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Difficulty in Process Parameter Optimization Caused by Wide Temperature Window of Polypropylene PE Raw Material
Problembeschreibung
PE-type materials have a wide processing temperature range (200-280°C), and there is a lack of basis for how to select the optimal temperature in actual operation.
Improper temperature selection damages energy consumption, product quality, and production efficiency.
Ursachenanalyse
(1) Different PE grades have different optimal processing temperatures
(2) The 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
Lösung
(1) Establish a processing temperature database for each PE grade
(2) Optimize the temperature of each section through design of experiments (DOE)
(3) Appropriately increase the temperature to improve fluidity for thin-walled products
(4) Appropriately reduce the temperature to reduce shrinkage for thick-walled products
(5) Standardize temperature adjustment records and establish a file of optimal process parameters
Wichtigste Erkenntnis
PE temperature window optimization needs to be advanced from two aspects: systematic experiments and experience accumulation.
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