Injection Molding
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HIPS Product Surface Orange Peel
Problem Phenomenon
The product surface shows orange-peel-like microscopic unevenness.
Cause Analysis
Low mold temperature causes poor replication or injection speed is slow; the rubber phase in HIPS also makes the surface state more sensitive to the process.; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solution
①Increase mold temperature; ②increase injection speed; ③improve cavity polishing; ④appropriately increase material temperature.; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
HIPS surface quality is guaranteed by temperature and speed; high gloss requirements need to be matched with mold polishing.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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