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US 2019/0161394 A1Published application
Soda-Lime-Silica Glass-Ceramic
AssigneeOwens-Brockway Glass Container Inc.
InventorsScott P. Cooper, Samuel Schuver, Carol A. Click
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Abstract
A soda-lime-silica glass-ceramic article having an amorphous matrix phase and a crystalline phase is disclosed along with a method of manufacturing a soda-lime-silica glass-ceramic article from a parent glass composition comprising 47-63 mol % SiO2, 15-22 mol % Na2O, and 18-36 mol % CaO. The crystalline phase of the glass-ceramic article has a higher concentration of sodium (Na) than that of the amorphous matrix phase.
Claims8
A soda-lime-silica glass-ceramic container comprising:
- a body defining the shape of a hollow container and comprising a soda-lime-silica glass-ceramic having an amorphous matrix phase and a crystalline phase, with the amorphous matrix phase and the crystalline phase each having a concentration of sodium, wherein the soda-lime-silica glass-ceramic has an overall chemical composition comprising 47-63 mol % SiO2, 15-22 mol % Na2O, and 18-36 mol % CaO, wherein the crystalline phase comprises combeite crystalline particles homogeneously dispersed throughout the amorphous matrix phase, and wherein the concentration of sodium in the crystalline phase is greater than the concentration of sodium in the amorphous matrix phase.
Dependencies are inferred from the claim text.