Flat Drawn Sheet Glass

This glass was drawn upward by a machine into sheets which was then cut into panes.

Flat drawn sheet glass. This glass is still quite common in american cities. The glass is rolled up vertically and then as it is cooling turned horizontally for further cooling and processing. First developed in belgium by émile fourcault 1862 1919 fr during the early 1900s the process was used globally. The first successful method was invented by emile fourcault in belgium who took a patent in 1904.

On this page please find information about our technical grade clear flat glass and microsheet materials. Glass of lower quality drawn glass was made by drawing upwards from a pool of molten glass a thin sheet held at the edges by rollers. The fourcault process is a method of manufacturing flat glass. Sheet glass has historically been used for thinner flat glass products.

Mcgraw hill dictionary of architecture and construction. Plate glass flat glass or sheet glass is a type of glass initially produced in plane form commonly used for windows glass doors transparent walls and windscreens. These are cut lengthways reheated and flattened. The two surfaces were of lower quality i e.

The glass is then annealed and cut into 7 to 10 foot 2 to 3 m cylinders. As it cooled the rising sheet stiffened and could then be cut. It offers a high optical quality that is far beyond what ordinary glass can provide. Cylinders of glass 40 feet 12 m high are drawn vertically from a circular tank.

The belgians invented the original process but it did not reach the uk until 1919. Machine drawn cylinder sheet was the first mechanical method for drawing window glass. At the end of the nineteenth century attempts were on to draw a flat sheet of glass directly to avoid the second step of flattening the cylinder. For modern architectural and automotive applications the flat glass is sometimes bent after production of the plane sheet.

This allowed larger panes to be cut and sold. Technical sheet glass is fabricated by using advanced float glass processes or it is directly drawn into glass sheets. Fourcault is an example of a vertical draw process in that the glass is drawn against gravity in an upward direction. There was great demand for glass with an enormous amount of building going in the country.

Not as smooth or uniform as those of float glass. Has fire finished surfaces not perfectly flat and parallel resulting in some distortion. Around the same time two methods for sheet glass drawing were developed in america. Horticultural sheet is produced by a later variation of this process.

It also allowed for much larger production.