Injection Molding
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Product difficult to eject from the mold
Problem Phenomenon
The product is difficult to eject from the mold, requires increased demolding force, the product surface may be scratched or deformed
Cause Analysis
Mold cavity surface rough or damaged
Injection pressure too high, product fits the cavity too tightly
Cooling time insufficient, product not yet fully shrunk
Improper release agent use or excessive amount
Insufficient mold draft angle
Solution
Polish the mold cavity surface
Appropriately reduce injection pressure
Extend cooling time until the product is fully solidified
Use release agent reasonably, avoid excess
Increase the draft angle to 1-2°
Key Takeaway
Difficult demolding requires improving the mold surface and demolding conditions
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