Choosing between leafing and non-leafing aluminium paste is important when developing coatings with a specific metallic appearance, surface coverage, and performance. The right choice depends on the coating system, application method, and final appearance requirements.

What Is Leafing Aluminium Paste?

Leafing aluminium paste contains aluminium flakes that tend to orient toward the coating surface after application. This creates a strong metallic appearance and high surface reflectivity.

It is commonly used when a bright silver appearance, strong hiding effect, or surface metallic finish is required.

Typical applications include:

• Industrial protective coatings
• Decorative coatings
• Roof and construction coatings
• Certain anticorrosion coatings

What Is Non-Leafing Aluminium Paste?

Non-leafing aluminium paste allows aluminium flakes to distribute more evenly throughout the coating film instead of concentrating mainly at the surface.

This provides a more integrated metallic effect and can offer better compatibility with coating systems where the pigment needs to remain within the coating film.

It is widely used in:

• Automotive coatings
• Plastic coatings
• Industrial coatings
• Decorative paints
• Metallic-effect coatings

How to Choose the Right Type?

The choice should not be based only on whether a pigment is leafing or non-leafing. Particle size, aluminium flake shape, surface treatment, resin compatibility, and dispersion performance can also affect the final coating appearance.

Consider the Final Appearance

If the goal is a highly reflective surface with a strong silver effect, leafing aluminium paste can be considered.

If the formulation requires a more uniform metallic effect and better integration of aluminium flakes within the coating film, non-leafing aluminium paste may be more suitable.

The coating system and application process should always be considered together with the desired metallic effect.

Conclusion

There is no single aluminium paste suitable for every coating application. Choosing between leafing and non-leafing aluminium paste requires consideration of the coating system, application method, particle characteristics, and desired metallic appearance.

By matching the aluminium paste grade with the specific coating requirements, manufacturers can achieve more consistent metallic effects and better overall coating performance.