HOW IS FLOAT GLASS MADE
Glass is made by melting a source of high silica content material as well as a number of other raw materials such as limestone, dolomite, feldspar, soda ash and recycled glass at high temperatures in a furnace.
Sand is typically the source of high quality silica in this process with the quality of glass determined by the iron content of the sand, among other characteristics. Typically, the lower the iron content, the greater the clarity and transmissivity of light through the glass.
Wanipigow Glass's silica supply is ideal for manufacturing high quality energy efficient coated float glass required for the latest energy efficiency products.
FLOAT GLASS IN CANADA
Float glass manufacturing currently does not exist in Canada. The last architectural glass manufacturing facility was located in Ontario and shut down in 2008. High electricity prices in Ontario and the strengthening Canadian dollar contributed to this as did the consolidation of global manufacturers.
Additionally, only a handful of manufacturing facilities in the USA are capable of producing solar glass due to the requirement for unique low-iron content silica sand, of which there are only a handful of such sand mines in North America.
Manitoba's vast hydro-electric infrastructure provides a stable and inexpensive electricity supply for glass manufacturing. Additionally, Manitoba's central location and distribution infrastructure provide an opportunity to bring very competitive, environmentally responsible premium float glass manufacturing to Canada.
Canadian Premium Sand's silica resource has high silica purity, low iron and low aluminum content with compatible melting characteristics that make it ideally suited for high quality float glass manufacturing. Other such sand mines are located in regions with much higher electricity and natural gas costs.