Crystallizing enamel composition and method of making and using

Details Crystallizing enamel composition and method of making and using Crystallizing enamel composition and method of making and using

1991-11-27

1993-05-04

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 32, 501 14, 501 20, 501 72, C03C 804, C03C 814

Patent

active

052081915

ABSTRACT:
The present invention provides a new and useful enamel composition and method of using the same for producing an enamel finish on a formed section of glass. The enamel composition partially crystallizes upon heating, thereby helping to prevent the forming and handling equipment from sticking and/or adhering to the composition during the forming operation. The enamel composition includes a crystallizable glass frit portion and a seed powder. The crystallized glass frit portion includes precursors from which Zn.sub.2 SiO.sub.4 can be crystallized upon firing of the enamel composition. The seed powder causes at least a portion of the precursors to crystallize upon firing such that during firing at least a part of the crystallizable glass frit yields crystallized Zn.sub.2 SiO.sub.4. The enamel composition also preferably includes bismuth oxide (Bi.sub.2 O.sub.3) in order to help further ensure that no sticking and/or adhering problems develop during the forming operation.

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