Material Drying
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Adhesion difference before and after PCTG injection coating
Problem Phenomenon
Adhesion between substrate and coating is good the first time but poor on repetition.
Cause Analysis
Changes in substrate surface condition (moisture absorption, oxidation) affect coating adhesion.
Solution
Properly store substrates with shelf-life management; pre-treat before use (plasma, etc.).
Key Takeaway
PCTG coating adhesion depends on substrate condition management.
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