Extrusion & Post
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PETG poor compatibility with inks and coatings, undercutting
Fenómeno del problema
Solvents in inks or coatings erode the PETG surface, producing swelling or cracking.
Análisis de la causa
The coating solvent has an erosive effect on PETG, and the interface between the coating and the substrate bonds poorly.
Solución
Select water-based or UV-curable inks and coatings; test the effect of solvents on PETG; pretreat the product surface.
Conclusión clave
PETG coating requires attention to solvent system selection.
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