The raw material for glass are sand, clay, soda, limestone, and components Supplement. Also in the manufacture of glass cullet used as scrap upon receipt of the metal.
Technological components are loaded in the melting furnace, where they are heated to a temperature of 1200 degrees. The resulting mass of liquid glass is sent to forming. Special die (platinum plate sieves with tiny holes) is continuously pulling the thin filaments, which cools and hardens. The finished fiber is wound in the bobbin, the winding speed can be adjusted the thickness of the filament, that is, if you wind up slowly, then the thread will be thicker. Glass filament is obtained with a thickness of 6 microns, its diameter is 20 times smaller than the diameter of a human hair.
Of such threads and then make a fiberglass different textures. Fiber can be made in the form of twisted yarns, smooth, and fluff, more loose. The threads are very durable, have a soft structure and beautiful in appearance, they may be subjected to staining. Therefore, this material was used for the manufacture of fiberglass and steklovolokna. Also fiberglass is used in construction, electrical engineering, tool industry, shipbuilding and the automotive industry.
Such a wide use of glass is due to its small cost and high performance. Fiberglass has high strength, flexibility, excellent acoustic and thermal insulation properties, low water absorption and thermal conductivity. It is not subject to corrosion, rot and chemical degradation, resistant to acids. In addition, fiberglass has virtually no electrical conductivity and has high fire resistance.