Find Out How Float Glass Is Produced
Float glass gets its name from the way its raw materials are turned into sheets of glass, and is used in most of our windows, automobiles, and TV screens.
Float glass is made primarily from high quality silica sand in which salt cake, limestone, dolomite, feldspar, soda ash, and powdered glass are added to make a batch. Molten glass is poured from a furnace and "floated" across a pool of molten tin.
Once it reaches the desired thickness and size, the glass is transferred from the molten tin chamber into an oven called a "lehr" where it is carefully cooled at different rates depending on the desired strength.
Float Glass: The Standard Cooling Process
The standard process of cooling results in annealed glass. Glass cooled at a faster rate than annealed glass is called heat-strengthened glass, and tempered glass results from an even faster cooling rate that produces glass that four times stronger than annealed glass.
Benefits and Applications
Virtually all of the flat glass you will encounter is float glass. It was adopted for a variety of applications because of its many improvements over plate glass and the efficiency and cost effectiveness of the manufacturing process.
- allows maximum light transmission for bright interiors
- can be produced in variety of colors
- can be produced in range of opacities
- possesses improved clarity over plate glass
- has a very smooth surface with virtually no inclusions or internal defects
Float glass is produced for a variety of industries including commercial and residential construction, architecture, solar panels, TVs, and retail display accessories. All of these applications benefit from its clarity, easy maintenance, and transparency.
Call Glass Doctor Today
If you want to learn more about float glass and how specially trained experts create custom mirrors and glass, call the glass experts at Glass Doctor® at 855-603-1919 for a free, in-home consultation.
How Is Tempered Glass Made?: https://www.scientificamerican.com/article/how-is-tempered-glass-mad/
Float Glass, Properties and Applications: https://www.azom.com/article.aspx?ArticleID=89
Float Glass Manufacturing Video: https://www.pilkington.com/en/us/architects/resource-library/float-glass-process-video