Float glass, technically mostly soda lime or soda lime silicate glass, is the most common kind of glass (“window glass”). Its name derives from the manufacturing process: In an endless, continuous process, the glass melt is transferred to a bath of liquid tin. The glass floats on the surface, cools down and is removed as a tension-free glass sheet with a variable thickness.
Float glass is suitable for products that only have to withstand chemical stress for a short period of time and are not subject to high thermal stress. After processing, it is usually tempered to become safety glass.