For rotogravure/flexo - detailed information 
| quality |
Particle size distribution * |
Optical characteristics |
L / NL |
| |
D10 (µm) |
D50 (µm) |
D90 (µm) |
|
|
| 8980/EA/70-30 ** |
4 |
14 |
42 |
fine/brilliant |
Leafing |
| 8980/IPA/70-30 |
4 |
14 |
42 |
fine/brilliant |
Leafing |
| 80000A/EA/70-30 |
2 |
7 |
19 |
very fine/high coverage |
Leafing |
| 80000A/IPA/70-30 |
2 |
7 |
19 |
very fine/high coverage |
Leafing |
| 90000/A/IPA/70-30 |
2 |
5,5 |
16 |
very fine/high coverage |
Leafing |
| 90000A/IPA/70-30 |
2 |
5,5 |
16 |
very fine/high coverage |
Leafing |
| ** e.g. :8980/EA/70-30 |
8980: |
Pigment quality |
|
EA: etyl acetate - IPA : isopropyl acetate
|
Solvent Type |
| |
70: |
70% solids |
| |
30: |
30% liquids |
* Values of particle size distribution are based on powder analysis.
Other solid / liquid ratios available on request
L/NL Note
Leafing grades are used for applications requiring maximum metallic brilliance and reflection.
Non-leafing grades typically are to remain inside the film application and will provide a lower metallic brilliance, reflection.
How to Formulate
1/ Mix a first part of the solvent used in your formulation with the recommended aluminium paste.
2/ The obtained liquid dispersion is then to be mixed gradually to the binder using a slow rotation mixer (50rpm).
3/ Add remainder quantity of solvent and eventually other additives.
Notes
Use binders with a low degree of acidity (neutral) to improve the stability of the ink.
Aggressive binders (i.e. nitrocellulose) can provoke a reaction of the metallic pigment in the binder.
When using aggressive binders, keep the quantity of binder to a minimum and increase the solvent loading.
Using a high rotation mixer may break the particles and as a result lower the shine and metallic effect.