Process for producing decorated glass-ceramic articles with trea

Details Process for producing decorated glass-ceramic articles with trea Process for producing decorated glass-ceramic articles with trea

1992-05-11

1993-12-14

Jones, W. Gary

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 31, 65 33, 65 605, 65 6053, C03B 3200, C03C 1100

Patent

active

052698262

ABSTRACT:
A process for producing decorated glass-ceramic articles is described in which an article of crystallizable glass, prior to being decorated with a ceramic color and then converted into a glass-ceramic article by heat treatment with simultaneous burning-in of the ceramic color, is pre-heat treated with a Bronsted acid at temperatures between 50.degree. and 800.degree. C. until the surface layer of the glass article is modified so that the layer of ceramic color sinks into the surface of the article during burning-in/ceramicizing, thereby permitting if desired, a thicker layer of ceramic color to be applied and the production of decorated glass-ceramic articles in which the decoration is flush with the surface of the article to be produced, thereby reducing its susceptibility to damage and wear.

REFERENCES:
patent: 3775154 (1973-11-01), Grego
patent: 3940531 (1976-02-01), Demarest
patent: 4170460 (1979-10-01), Donley
patent: 4192666 (1980-03-01), Lupoi
patent: 4904291 (1990-02-01), Siebers

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