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Float glass is a sheet of glass made by floating molten glass on a bed of molten metal of a low melting point, typically tin, [1] although lead was used for the process in the past. [2] This method gives the sheet uniform thickness and a very flat surface. [ 3 ]
Most float glass is soda–lime glass, but relatively minor quantities of special borosilicate [10] and flat panel display glass are also produced using the float glass process. [11] The float glass process is also known as the Pilkington process, [12] named after the British glass manufacturer Pilkington, who pioneered the technique (invented ...
float glass process Sir Lionel Alexander Bethune Pilkington OBE FRS [ 1 ] (7 January 1920 – 5 May 1995), known as Sir Alastair Pilkington , was a British engineer and businessman who invented and perfected the float glass process for commercial manufacturing of plate glass .
Most float glass is soda–lime glass, but relatively minor quantities of specialty borosilicate [59] and flat panel display glass are also produced using the float glass process. The success of this process lay in the careful balance of the volume of glass fed onto the bath, where it was flattened by its own weight. [60] Full scale profitable ...
As Pilkington plc owned all but one of the manufacturing plants around the world employing the float process, Pilkington had a monopoly. [citation needed] Although the patents had expired by the early 1980s, Pilkington had licensed their use, and required the licensees to keep the details of the float glass process secret.
This plant converted operations between 1972 and 1974 to Libbey Glass table-glassware manufacturing, which it continues today. In 1928, Libbey-Owens was the first company to produce automotive laminated safety glass and won a contract to supply the Ford Motor Company with windshields for the Model A .