How the Glass is Made

It’s needed some steps to make a glass which we use everyday. First, we have to collect the material of the glass. They’re sand or pure silica (SiO2), soda or sodium carbonate (Na2CO3), and limestone or calcium oxide (CaO). We can add some magnesium oxide (MgO) and aluminum oxide to provide for a better chemical durability. Then, they are put and mixed in the melting pot in a furnace and heated in about 1.500° C. After that, the mixture is divided into two parts. For making plate glass and bottle glass. Plate glass is made by poured molten glass into a roller, so that we get the shape we want. Bottle glass is made by poured molten glass into the removable mould and then the air is blown into the mould so that the molten glass will be pressed to the side of the mould. Then plate glass and bottle glass are cooled down for getting the solid form.