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PETG poor adhesion during printing
Fenómeno do problema
The ink adhesion on the PETG product surface is insufficient, easily peeling off or being scratched.
Análise das causas
PETG surface energy is low (about 30-36mN/m), the surface has mold release agent or oil contamination residue, and the ink system does not match.
Solução
Corona treat the product surface to a dyne value ≥42mN/m; clean with alcohol before printing; select an ink system suitable for polyester.
Conclusão principal
PETG printing adhesion depends on surface treatment and ink matching.
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