Our state of the art digital printing process allows us to economically produce multi colour (CMYK) printed ceramic and glass decals with a minimum order quantity of just 1 A3 sheet
We now have 3 printers:
1) "Magenta Set" Machine which produces ceramic decals for firing at 820 degrees C
2) "Red Set" Machine which produces ceramic decals for firing at 780 degrees C
3) "Red Set Glass" Machine which produces glass decals for firing at 580 degrees C
FLUX or no FLUX, that is the question!
Covercoat is chosen based on the body the decal will be applied to as well as the required final result.
Flux is basically ground glass which is printed over the ink and under the covercoat. This will produce a nice gloss after firing, but if the decal can not be trimmed near the image, it will leave behind a clear layer of flux after firing which has a visible edge and not always desireable.
Fluxed covercoat would never be used if the body is not to be glazed.
Food safety is not just a product of the decal applied to the ceramic piece, it is also the glaze and how the decal is fired and what the piece is fired with in the kiln. Contamination can occur.
We test our decal materials whenever changes are made to ensure food safety, but as more than just the decal is involved, we suggest for peace of mind and due dilligence, that our customers also undertake food safety testing to ensure the final piece is safe.
In Melbourne, we recommend Spectrometer Services to carry out heavy metal release testing.