Material Drying
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PLA Narrow Processing Window
Problem Phenomenon
Slight fluctuations in PLA process parameters cause embrittlement or filling problems; the window is obviously narrow
Cause Analysis
PLA's brittleness, thermal stability, moisture sensitivity and narrow processing window are the four major technical challenges; any loss of control of temperature, shear, or humidity directly manifests as performance decline
Solution
①Lock and monitor process parameters; ②Ledger management of the three elements temperature, residence and humidity; ③Evaluate upgrading of equipment with large fluctuations; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PLA's narrow window is the material's nature; parameter discipline and equipment precision are the double insurance for stable production; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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