The Learning Center Float Glass is made by a process which creates perfectly smooth, flat, and clear glass. Float glass was invented at Pilkington Brothers, an English glass manufacturer in the mid 1950’s. Until that point in the 20th century, glass was formed as a puddle on a solid iron surface, ground down to a flat surface, and polished until gleaming. To make float glass, a thin layer of molten glass is poured onto a tank of molten tin contained in an atmosphere of 100% nitrogen. Being less dense than the tin, the glass floats at the top and forms a perfectly smooth, glossy surface on both sides and maintains an even thickness. Besides the fact that this creates the smoothest, clearest glass possible, it is more economic than grinding and sanding. After the glass is poured onto the tin, it is slowly cooled. Otherwise, cracks and imperfections would result if it annealed, or changed from liquid to solid, too quickly. Nitrogen is present so that the glass will not oxidize and no longer be transparent.  10. What is float glass? < back to list of questions about glass WINDOW GLASS

Name
Phone
E-mail
Address
City
Zip
Interest






Contact Time
Referred By

1-877-SWING CLEAN info@energyswingwindows.com 3245 Miracle Drive Murrysville, PA 15668 724-387-2991 PA Contractor ID PA001856