Producing a glass object having an encodable layer

Details Producing a glass object having an encodable layer Producing a glass object having an encodable layer

2000-01-07

2001-03-20

Vincent, Sean (Department: 1731)

Glass manufacturing

Processes

Devitrifying glass or vitrifying crystalline glass

C065S033600, C065S060500, C065S060600, C065S060700, C065S060800, C216S065000, C219S121600, C427S193000, C427S199000

Reexamination Certificate

active

06202444

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention relates to a glass object having an encodable layer, as well as to a method of providing a layer on a glass object. The invention further relates to a method of encoding a glass object. Said glass object may be, for example, a front panel of a display tube or a cone of a cathode ray tube.
In general, glass is encoded by providing it with paper stickers on which the code is printed. A disadvantage of these paper stickers is that they cannot withstand processes in which the glass is subjected to heat, because they are burned at high temperatures.
OBJECTS AND SUMMARY OF THE INVENTION
It is an object of the invention to provide a glass object having an encodable label which is resistant to high temperatures. To this end, the object in accordance with the invention is characterized in that it at least comprises a layer which includes glass and pigment. A layer in accordance with the invention can be made, for example, by providing a paste comprising a binder, pigment and glass frit onto hot glass (the glass for example being at a temperature between 400° C. and 600° C., in particular at a temperature of approximately 500 degrees). As the label is resistant to high temperatures, it can be provided early in the production process of the glass product, so that said product can be monitored during the entire process and after said process.
These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.
In the drawing:


REFERENCES:
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patent: 5021112 (1991-06-01), Breger
patent: 5111344 (1992-05-01), Robinson, Jr.
patent: 5393465 (1995-02-01), Drozdyk et al.
patent: 5683786 (1997-11-01), Kavanaugh
patent: 2-131931 (1990-05-01), None

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