Blow Molding
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TPU vs TPE Comparison
Problem Phenomenon
Cost increased after replacing TPE products with TPU
Cause Analysis
TPU has high performance but high price, and its performance is excessive for ordinary applications; when troubleshooting on site, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry literature and should be confirmed first during troubleshooting
Solution
Select material according to performance requirements: TPU for high wear resistance and high resilience, TPE for general elasticity; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
TPU and TPE are selected in a graded manner according to performance requirements; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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