Beyond the manufacturing method, glass is a solid solution resulting from the progressive solidification, without traces of crystallization, of homogeneous mixtures in fusion formed mainly by silica, soda and lime. To manufacture glass, three basic elements must be fused together:
-An OVERGLAZE, silica, introduced in the form of sand;
-A FLUX, soda or potash, in the form of sulphate or carbonate (lowers the melting temperature of silica);
-A STABILISER, lime, in the form of carbonate (gives the glass greater resistance to water attacks).
These three components are found in the compositions of glass since the most remote times. Today the most modern glass, produced in thousands of tons per day is the FLOAT GLASS. The glass obtained in this way, thanks to its extreme versatility and ability to be cut, grinded, hot-molded, hardened, finds today an increasingly widespread application in the construction industry, in the costume.