Injection Molding
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PPSU nozzle selection
Problem Phenomenon
Improper PPSU nozzle type; drooling or cold slug problems.
Cause Analysis
PPSU preferably uses open injection nozzles; inner hole structure matches the screw tip; valve nozzles are optional; temperature control; drooling and cold slug management.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solution
①Open nozzle preferred; ②inner hole matches screw; ③temperature control; ④drooling management; ⑤regular inspection.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
The open design of PPSU nozzles is recommended; matching is the key to quality; inspection prevents failure.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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