Material Drying
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PPSU storage management
Problem Phenomenon
PPSU sealed storage after drying; prevention of secondary moisture absorption.
Cause Analysis
PPSU dried resin should be stored in sealed containers; exposure to air absorbs moisture; time limits; usage management; quality retention.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solution
①Sealed containers after drying; ②exposure time management; ③usage plan; ④quality inspection; ⑤storage records.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PPSU post-drying management is quality continuation; sealing is a basic requirement; record traceability ensures execution.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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