Molds & Tooling
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TPE shrinkage deformation
Problem Phenomenon
TPE products shrink and deform after demolding
Cause Analysis
TPE shrinks and elastic recovery changes the shape; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry materials and should be confirmed first during troubleshooting
Solution
Mold compensated for elastic recovery; sufficient sizing; inspection after aging; 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, so as to locate effective measures
Key Takeaway
TPE dimensions consider elastic recovery; after confirming effectiveness, fix 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 later
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