Extrusion & Post
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Pinholes in FEP anti-corrosion coatings
Problem Phenomenon
Pinholes exist in the FEP coating, causing anti-corrosion failure
Cause Analysis
Coating process defects; incomplete substrate cleaning
Solution
Multi-layer coating to eliminate through pinholes; strict substrate treatment
Key Takeaway
Zero pinholes in FEP coatings is the prerequisite for corrosion protection
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