Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1974-11-27
1980-08-12
Kellogg, Arthur D.
Glass manufacturing
Processes
Forming product or preform from molten glass
65182R, C03B 1802
Patent
active
042171253
ABSTRACT:
Flat glass is manufactured by the float process and is attenuated to a thickness in the range 1.5 mm to 5 mm. In an attenuation zone of the bath the viscosity of the glass is controlled to regulate attenuation of the float ribbon to a desired width and thickness and transverse barriers are provided on the floor of the tank structure, containing the molten metal along which the ribbon is advanced, to constrain to forward flow the molten metal entrained beneath the ribbon. Upstream counterflow from the cooler end of the tank structure is alongside the ribbon and replenishes the molten metal beneath the ribbon between that transverse barrier and an upstream similar transverse barrier.
REFERENCES:
patent: 3479171 (1969-11-01), Robinson et al.
patent: 3539320 (1970-11-01), Plumat et al.
patent: 3607199 (1971-09-01), Itakura et al.
Kellogg Arthur D.
Pilkington Brothers Limited
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