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Home / News / Industry News / Waterborne Silver Metallic Paint Not Performing Well? Resin Selection Is the Key Variable
Industry News
Waterborne Silver Paint · Baking System · AA-9661S
With the continued development of waterborne coatings, waterborne silver metallic paint is seeing increasing application in home appliances, automotive components, and industrial finishing. However, in actual production, problems such as uneven flake distribution, insufficient adhesion, and poor whiteness remain common — directly affecting product appearance and application quality. Beyond process variables, the resin system is an equally important factor in determining metallic paint performance.
Common Problems
Uneven Flake Distribution
Poor metallic orientation — flooding, uneven gloss, and inconsistent metallic effect appear across the coated surface.
Insufficient Film Adhesion
After baking, the film does not bond firmly to the substrate, reducing product durability.
Poor Whiteness Performance
Film hue is dark, reducing the overall visual quality of the metallic finish.
Low Colour Paste Grinding Efficiency
Insufficient compatibility between resin and colour paste increases grinding and colour-matching difficulty.
Why Adjusting Flake Type or Process Is Not Enough
Some formulations attempt to improve metallic appearance by switching flake type or adjusting the spray process. But if the resin system is not well-matched to the metallic pigment, it remains difficult to achieve adhesion, whiteness, and flake orientation simultaneously. Selecting a waterborne resin that is compatible with the metallic system is the more fundamental approach to improving comprehensive performance.
AA-9661S: Water-Soluble Acrylic Resin for Waterborne Baking Systems
AA-9661S is a water-soluble acrylic resin that can be used in combination with amino resins in waterborne baking systems. It improves film adhesion after baking, enhances the directional alignment of metallic flakes, and gives the film better whiteness and appearance quality. AA-9661S can also be used directly for colour paste grinding and dispersion, helping to simplify production workflow and improve formulation adaptability.
| Film Adhesion After Baking | Improves the bonding strength of the baked film to the substrate, supporting product durability |
| Metallic Flake Alignment | Improves the directional arrangement of silver and metallic flakes, giving a more uniform and consistent metallic appearance |
| Whiteness Performance | Helps the film achieve better whiteness expression for a brighter, more premium metallic finish |
| Colour Paste Compatibility | Can be used directly for colour paste grinding and dispersion — simplifies production and improves formulation adaptability |
| System Design | For use in combination with amino resins in waterborne baking systems; suitable for waterborne silver metallic paint and related industrial coating systems |
Good waterborne silver metallic paint performance depends not only on pigment quality — the resin system is equally important. Selecting a well-matched waterborne acrylic resin improves adhesion, metallic alignment, and whiteness, providing more stable and excellent comprehensive performance for waterborne industrial coatings.
Frequently Asked Questions
How does the resin system affect metallic flake alignment — isn't that determined by the flake itself?
The flake type sets the potential for metallic effect — but whether that potential is realised in the cured film depends on how well the resin carries and supports the flake orientation during the drying and baking stages. A resin with insufficient compatibility or film-forming performance for metallic systems will allow flakes to settle and re-orient randomly before the film sets, regardless of the flake quality. Resin and flake selection together determine the final metallic appearance.
Does using AA-9661S for colour paste grinding affect its subsequent performance in the baking system?
No — its colour paste grinding capability is designed to be compatible with its role in the baking system. Using it as the grinding vehicle for colour pastes that will be let down into the same waterborne baking formulation ensures good compatibility between the colour paste and the base system, which can improve both colour consistency and storage stability.
