For rotogravure / flexo - detailed information
| Quality |
Particle size
distribution * |
Optical
characteristics |
| |
D10 (µm) |
D50 (µm) |
D90 (µm) |
|
| 9000/IPA/85-15 ** |
3 |
9 |
20 |
Fine/brilliant |
| 13000/IPA/85-15 |
2 |
7 |
16 |
Very fine/ high coverage |
* Values of particle size distribution are based on powder analysis.
| ** e.g. :9000/IPA/85-15 |
90000: |
Pigment quality |
| |
IPA : Isopropyl acetate |
Solvent Type |
| |
85: |
85% solids |
| |
15: |
15% liquids |
Other solid / liquid ratios available on request.
Indicative Formulations
| Bronze: |
30-35% |
| Solvent: |
60-30% |
| Binder: |
10-35% |
How to use
1/ Mix a first part of the solvent used in your formulation with the recommended bronze grade.
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 (ie 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.