Plate glass
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Plate glass, flat glass or sheet glass is a type of
optical communication
).
Flat glass has a higher
chemical durability
of container glass against water, which is required especially for storage of beverages and food.
Most flat glass is soda–lime glass, produced by the float glass process (1950s). Other processes for making flat glass include:
- Broad sheet method(13th century)
- Window crown glass technique (14th century)
- Blown plate method(17th century)
- Plate polishing(17th century)
- Cylinder blown sheet method
- Machine drawn cylinder sheet method(early 20th century)
- Rolling (rolled plate glass, figure rolled glass) (19th century)
- Fourcault process (1900s)
- Float glass (1950s)
- Overflow downdraw method (1960s)
The term
red brick universities
, used for an older generation of establishments).
Quality and damage
Scratches can occur on sheet of glass from accidental causes. In glass trade terminology these include "block reek" produced in polishing, "runner-cut" or “over/under grind” caused by edge grinding, or a "sleek" or hairline scratch, as well as "crush" or "rub" on the surface.[2]
See also
References
- ISBN 1-57498-225-7
- ^ Ron Hanifan Concise Dictionary of Engineering: A Guide to the Language 2014 3319078399 "Scratches occur on sheet glass in all degrees from various accidental causes. Block reek is a chain-line scratch produced in polishing. A runner-cut is a curved scratch caused by grinding. An over/under grind is an imperfection on the edge. A sleek is a hairline scratch. A crush or rub is a surface ..."
