These enamels are recommended for decoration of soda-lime glass packaging, more particularly single-trip and multi-trip returnable bottles.
This System can also be used for special application as color-break enamels for pharmaceutical borosilicate glass ampules.
Chemical Composition
Colors in this System contain lead.
Those marked * are developed with cadmium-containing pigments.
Intermixable Color Range
|
COLOR |
REFERENCE |
COLOR |
REFERENCE |
|
GREEN |
VR 223 |
GREY |
VR 276 * |
|
DARK GREEN |
VR 9959 * |
BROWN |
VR 280 * |
|
ROYAL BLUE |
VR 200 * |
DARK BROWN |
VR 281 * |
|
COBALT BLUE |
VR 208 |
ORANGE |
VR 261 * |
|
DARK BLUE |
VR 209 |
MEDIUM RED |
VR 270 * |
|
MID-YELLOW |
VR 240 * |
DARK RED |
VR 14157 * |
|
YELLOW |
VR 242 * |
PINK |
VR 273 * |
|
BLACK |
VR 285 * |
INTENSE WHITE |
VR 290 * |
|
AcE IMITATION ETCH |
VR 291 * |
WHITE |
VR 666B |
In both groups, cadmium-free and cadmium-containing enamels (marked*), the colors are fully intermixable in any proportion.
However, we recommend making preliminary tests if mixing cadmium-free and cadmium-containing colors (*), to check the color stability during firing.
Colors from different Systems should not be mixed.
Our technical service teams also offer a full custom-color matching service, including special decorative effects.
Expansion Coefficient (C.o.E.)
Average C.o.E. measured on the basic frit System is 80 (± 4).10-7K-1.
Exception is VR208 which has a C.o.E of 85 (±4).10-7K-1.
Recommended Firing Conditions
600oC to 630oC (1110-1165oF) in a cycle of 1hr-1.5hrs or more, with a soaking period of c.10 minutes
It is also possible to fire the VR System at a temperature of 600-700 oC (1165-1290 oF) in short cycles, such as used for pharmaceutical glass bottles.
Chemical Resistance
Norm EN 1388-2 (tests on the basic flux system in laboratory conditions)
- lead release is < 10mg/dm2 of the decorated surface.
- Cadmium release is < 1.5mg/dm2 of the decorated surface.
See also the acid/alkali resistance test results in the product summary table.