Material Drying
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PVC Drying Equipment
Problem Phenomenon
Is it necessary to equip a dehumidifying dryer when PVC usage is small
Cause Analysis
PVC drying requirements are not high, and an ordinary oven can satisfy them; during on-site troubleshooting, verify item by item according to this mechanism to 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
PVC only needs an ordinary hot-air oven at 75-90°C; only powder and recycled material require strict drying; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
PVC drying equipment is configured simply according to demand; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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