Extrusion & Post
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TPE extrusion output instability
Problem Phenomenon
TPE extrusion output fluctuates, product dimensions are uneven, and the screw slips
Cause Analysis
Causes of unstable TPE extrusion output: unstable melting point, large temperature fluctuations, slipping between the screw and the pellets; insufficient pellet preheating, excessive external lubricant; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
①change extrusion conditions and screw shape; ②improve temperature control accuracy; ③preheat pellets and reduce external lubricant; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
TPE extrusion stability relies on temperature accuracy and pellet condition; slipping is an alarm of the feeding system; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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