Extrusion & Post
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PETG poor compatibility with inks and coatings, undercutting
Fenómeno do problema
Solvents in inks or coatings erode the PETG surface, producing swelling or cracking.
Análise das causas
The coating solvent has an erosive effect on PETG, and the interface between the coating and the substrate bonds poorly.
Solução
Select water-based or UV-curable inks and coatings; test the effect of solvents on PETG; pretreat the product surface.
Conclusão principal
PETG coating requires attention to solvent system selection.
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