Method and apparatus for manufacture of flat glass by the...

Details Method and apparatus for manufacture of flat glass by the... Method and apparatus for manufacture of flat glass by the...

C - Chemistry, Metallurgy

03

B

49/4

C03B 18/02 (2006.01) C03B 18/18 (2006.01)

Patent

CA 1054370

ABSTRACT OF THE DISCLOSURE 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 control- led 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 re- plenishes the molten metal beneath the ribbon between that trans- verse barrier and an upstream similar transverse barrier.

214622

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