Glass manufacturing – Processes – Reshaping or surface deformation of glass preform
Patent
1979-03-30
1981-07-28
Kellogg, Arthur D.
Glass manufacturing
Processes
Reshaping or surface deformation of glass preform
65104, 65273, C03B 23025
Patent
active
042808286
ABSTRACT:
Heat-softened glass sheets are shaped by being lifted by vacuum drawn through a platen and then dropped onto a shaping mold. The dropping of the glass sheets is assisted by rapidly replacing the vacuum in the platen with super-atmospheric pressure.
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Kellogg Arthur D.
Millman Dennis G.
PPG Industries Inc.
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