Molds & Tooling
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HDPE mold temperature 20-60℃
Problem Phenomenon
The product surface is rough with poor gloss, or after the mold temperature is set too high the cycle is prolonged and demolding deformation occurs
Cause Analysis
HDPE mold temperature affects crystallization and surface: low mold temperature gives poor surface replication but a short cycle; high mold temperature gives sufficient crystallization and dimensional stability but a long cycle; the conventional 20-60℃ is balanced according to product requirements
Solution
①Mold temperature conventionally 20-60℃; ②take the upper limit when high dimensional stability is required; ③arrange the cooling water circuits evenly to prevent warpage from temperature difference; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
HDPE mold temperature is the balance point between efficiency and quality; uniform cooling is more important than the absolute temperature value; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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