Extrusion & Post
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TPE Overmolding Mold Temperature
Problem Phenomenon
Interface delamination of TPE overmolded products
Cause Analysis
Low mold temperature causes insufficient interface fusion; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience; this mechanism has been repeatedly verified by industry information and should be confirmed first during troubleshooting
Solution
Take the upper limit of overmolding mold temperature; preheat hard plastic parts; optimize injection speed; 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
Overmolding mold temperature ensures interface fusion; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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