Process for producing tabular building and decorative materials similar to natural stone
AssigneeSchott Glaswerke
InventorNorbert Greulich
Life of this patent
Estimating the term…
Abstract
A process for producing tabular building and decorative materials similar to natural stone and having high strength for the facing of facades, walls and floors in interior and exterior applications from thermally treated mixtures of crushed glass, ceramic components and finely divided additives and materials produced by the process.
Claims18
A process for producing tabular building and decorative materials similar to natural stone and having high strength for the facing of facades, walls and floors in interior and exterior applications from mixtures of crushed glass, mineral components and finely divided additives, comprising the process steps of:
- providing a mixture including 85-98% by mass of crushed glass, 0-14.7% by mass of a mineral component in grain sizes <3 mm and a total of 0.3-5% by mass of finely divided additives in particle sizes <60 .mu.m;
- introducing a level, uniformly thick layer of the mixture into a temperature-resistant mould;
- drying the layer in the mould at at a temperature of 60.degree. to 110.degree. C.;
- heating the layer at 0.5-3.0K/min up to a temperature of 720.degree.-1100.degree. C. and holding the layer at this temperature for 20-120 min;
- cooling the layer at 0.5-3.0K/min down to room temperature.
Dependencies are inferred from the claim text.