X-ray and gamma-ray shielding glass

A glass plate, comprising the following components in weight-%:

• 10-35% SiO2;
• 60-70% PbO;
• 0-8% B2O3;
• 0-10% Al2O3;
• 0-10% Na2O;
• 0-10% K2O;
• 0-0.3% As2O3;
• 0-2% Sb2O3;
• 0-6% BaO;
• and
• 0.05-2% ZrO2, wherein the glass plate has a thickness in the rage of 5 μm to 50 mm.

A method to produce gamma-ray shielding glass plates, wherein the method comprises the following steps:

• providing a glass composition including the following components in weight-%:
• 10-35% SiO2, 60-70% PbO, 0-8% B2O3, 0-10% Al2O3, 0-10% Na2O, 0-10% K2O, 0-0.3% As2O3, 0-2% Sb2O3, 0-6% BaO, and 0.05-2% ZrO2;
• drawing a glass ribbon with a thickness in the range of 0.8 mm to 20 mm upwards from a melt against gravitational force,
• guiding the glass ribbon by a plurality of rolls;
• running the glass ribbon through a cooling section;
• and
• cutting the glass ribbon into glass plates.

A method to produce gamma-ray shielding glass plates, wherein the method comprises the following steps:

• providing a glass composition including the following components in weight-%:
• 10-35% SiO2, 60-70% PbO, 0-8% B2O3, 0-10% Al2O3, 0-10% Na2O, 0-10% K2O, 0-0.3% As2O3, 0-2% Sb2O3, 0-6% BaO, and 0.05-2% ZrO2;
• drawing a glass ribbon with a thickness in the range of 25 μm-1.1 mm downwards from a melt with the gravitational force,
• guiding the glass ribbon by a plurality of rolls;
• running the glass ribbon through a cooling section;
• and
• cutting the glass ribbon into glass plates.