Molds & Tooling
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LDPE Mold Temperature Effect on Shrinkage
Fenómeno do problema
For LDPE, the same mold at different mold temperatures gives different shrinkage rates.
Análise das causas
Mold temperature affects crystallinity and shrinkage; 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 literature and should be confirmed first during troubleshooting.
Solução
Lock the mold temperature; measure first-piece shrinkage; standardize the process; 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.
Conclusão principal
Shrinkage consistency relies on mold temperature locking; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; Incorporate this case into the defect archive as a troubleshooting reference for similar future problems.
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