Processing Machinery
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Black spots/discoloration appearing on FEP products
Problem Phenomenon
FEP products become darker in color or show black spots
Cause Analysis
Improper processing temperature control causes overheating and decomposition; material stagnates in the equipment
Solution
Precisely control the temperature ≤380°C; shorten the residence time
Key Takeaway
The decomposition of FEP is irreversible
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