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Types of glass
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Types of glass
There are many different types of glass. They differ in terms of their chemical composition, the method used to produce them or their processing behaviour. Generally, they are categorised according to their chemical composition. A differentiation is made between  soda-lime glass, lead glass and borosilicate glass. 
How is curved glass made?
Manufacturing curved glass is a time-consuming, highly specialised job. You could almost say it's a ‘pane' to produce.
Workers cut the sheet of glass to size and then clean and polish it, using a UV lamp to check for dust or impurities (any rogue particles would cause the glass to crack or shatter). They construct a steel mould shaped to the curve radius and dimensions of the desired piece. To stop the pane sticking to the mould, the glass is painted with a mixture of detergent and calcium carbonate.
Then, it is placed on the mould and loaded into the kiln. The manufacturers crank up the heat to 700°C, hot enough to loosen the bonds between the silica molecules so that the glass starts to soften and bend to the profile of the mould. Once in shape, the glass is gradually cooled over a period of about two hours..
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