Molds & Tooling
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PLA product bubbles (air traps)
Problem Phenomenon
Bubbles and burning at the end.
Cause Analysis
Poor venting; high-speed filling traps air.; 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 data and should be confirmed first during troubleshooting
Solution
① End venting; ② reduce speed; ③ clean vent grooves; ④ optimize the gate.; 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
Key Takeaway
The air trap position is the venting point.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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