An overview of the glass

What is the glass floated?

Glass is a hard, brittle, transparent and amorphous inorganic material occurring in nature although it can also be produced by man. The artificial glass is manufactured from a complex mixture of vitrificantes compounds, such as silica. fluxes, such as alkalis and stabilizers, such as lime.

It is called float due to the manufacturing process, which consists in melt at about 1500 ° C, silica sand (SiO2), carbonate of soda (Na2CO3) and limestone (CaCO3) in a melting furnace, after taken the mixture, comes out of the oven function to go to a bath of Tin liquid that floats and passes through rollers helps stretch mix and achieve the thickness of glass that you want. On leaving the Chamber, passes through an annealing furnace, and ultimately cut.

In addition to these components, flat glass may contain also small amounts of other substances.

Glass characteristics


The common glass or glass base, also known as soda lime silicate glass, is composed by:

  • Silica (SiO2), vitrification material from 69% to 74%
  • Sodium oxide (Na2O), flux from 12% to 16%
  • Calcium oxide (CaO), stabilizer $ 5 to 12%
  • Magnesium oxide (MgO of $ 0 to 6%)
  • Aluminium oxide (Al2O3 of $0 3%)