Manufacture of glass

Details Manufacture of glass Manufacture of glass

1977-03-10

1977-11-01

Kellogg, Arthur D.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 65A, 65 99A, 65182R, C03B 1802

Patent

active

RE0294640

ABSTRACT:
Surface modified glass is produced by method and apparatus in which the glass is contacted with a molten body, for example of a molten metal or molten alloy while the glass temperature is such that it can be modified by migration of cations from the molten body into the glass surface. This cationic migration is electrically induced and the molten material is periodically connected as a cathode with respect to the glass for a preset time sufficient at least partially to deoxidize the molten material. Non-oxidizing conditions may be maintained in the molten material and the electrical action at the interface between the molten body and the glass while the molten body is connected as a cathode causes reduction of at least a proportion of the cations in the glass surface to produce a metallic dispersion.
The invention is particularly applicable to the modification of the upper surface of a ribbon of float glass advancing along a molten metal bath.

REFERENCES:
patent: 3505049 (1970-04-01), Plumat
patent: 3632321 (1972-01-01), Plumat et al.
patent: 3765855 (1973-10-01), Larrick
patent: 3850605 (1974-11-01), Maltman et al.

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