A SUBSTRATE PROVIDED WITH A COATING BASED ON A GLASS FLUX, GLASS FLUX MATERIAL, AND METHOD FOR COATING A GLASS OR GLASS CERAMIC SUBSTRATE

摘要

The invention relates to a glass flux material for applying an opaque coating which comprises at least one pigment and a glass component with the following composition: SiO2 55 - 70 mol.%, Al2O3 2.5 - 8 mol.%, Bi2O3 0.5 - < 4 mol.%, B2O3 14 - 27 mol.% with at least 2.5 mol.% of at least one oxide of the group Li2O, Na2O, and K2O, wherein the ratio of alkali oxides to aluminum oxide Σ R2O/AI2O3 is less than 6.