Extrusion & Post
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LCP Product Delamination and Peeling
Problem Phenomenon
Layered peeling appears on the product surface.
Cause Analysis
The melt front rolls over and folds on the cavity surface (flow front rollover); improper injection speed or flow front temperature fluctuation disorders surface orientation and causes delamination.
Solution
①Optimize the injection speed curve for steady filling; ②appropriately increase melt and mold temperature; ③optimize the gate to reduce disturbance; ④check hot runner temperature uniformity.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
LCP delamination is related to flow front behavior; steady filling is the key to prevention.; 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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