◆ Common Causes
- •Insufficient hold pressure
- •Insufficient hold time
- •Premature gate freeze
- •Injection speed too high
- •Inadequate resin drying
◆ Solutions
- ✓Increase hold pressure
- ✓Increase hold time
- ✓Enlarge gate size
- ✓Reduce injection speed (final stage)
- ✓Verify resin drying
◆ Resin-Specific Notes
PC
Voids easily form in thick sections.
PA
Moisture-induced bubbles. Drying mandatory.
Transparent
Voids are visible in transparent resins. Strict control required.
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This content is a field-reference summary. Final judgment requires on-site engineer verification.