Method of producing curved and partly colored glass sheet

Details Method of producing curved and partly colored glass sheet Method of producing curved and partly colored glass sheet

1981-03-16

1982-07-13

Kellogg, Arthur D.

Glass manufacturing

Processes

With coating

65 24, 65106, 65 6051, 65 6053, C03C 1704

Patent

active

043392571

ABSTRACT:
A method of producing a curved glass sheet having a colored coating layer formed in a selected region, such as a marginal region in the case of a window glass for the rear window of an automobile, by applying a coloring agent comprising inorganic pigment and glass frit of a low melting temperature onto a flat glass sheet surface, heating the glass sheet and press-bending the heat-softened glass sheet while the applied coloring agent is in fused state. As a novel feature, the coloring agent comprises alumina powder which adheres to the surfaces of the glass frit particles until fusion of the glass frit on the glass sheet surface. The presence of alumina powder prevents a shaping tool pressed against the glass sheet from adhering to the fused layer of the coloring agent.

REFERENCES:
patent: 3244547 (1966-04-01), Orr et al.
patent: 3282014 (1966-11-01), Bamford et al.
patent: 3442748 (1969-05-01), D'Huart

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