Method and system for manufacturing glass
AssigneeOwens-Brockway Glass Container Inc.
InventorsCasey Townsend, Carol Click
Life of this patent
Estimating the term…
Abstract
A process for transitioning molten glass in a glass furnace from one color to another color while minimizing the production of out-of-color specification transition glass. During the transition, a compensating agent is introduced into the molten glass to adjust the color of the molten glass being discharged from the furnace so that the discharged molten glass meets a target color specification, which effectively results in acceleration of the furnace color change compared to other conventional methods.
Claims18
A method of manufacturing glass comprising:
- melting a glass batch in a continuous glass furnace to produce molten glass having a first glass composition and a first color, the first color being defined by a first color specification;
- transitioning the molten glass in the furnace from the first glass composition to a second glass composition having a second color by modifying the glass batch with respect to at least one element or compound, the second color being defined by a second color specification;
- introducing a compensating agent into the molten glass separate from, and downstream of, the glass batch so that molten glass exiting the furnace continues to meet either the first color specification or the second color specification while the molten glass in the furnace is transitioning from the first glass composition to the second glass composition;
- and
- monitoring at least one of the composition or the color, or both, of the molten glass in the furnace during the transition of the molten glass from the first glass composition to the second glass composition.
A method of manufacturing glass comprising:
- melting a glass batch in a continuous glass furnace to produce molten glass having a first color;
- transitioning the molten glass in the furnace from the first color to a second color by introducing, eliminating, or modifying an amount of at least one colorant material in the glass batch;
- and
- introducing a compensating agent into the molten glass flowing through the furnace separate from, and downstream of, the glass batch during the transition of the molten glass from the first color to the second color, wherein the compensating agent is introduced into the molten glass in an amount that maintains a target color specification in molten glass being discharged from the furnace.
A method of manufacturing glass comprising:
- melting a glass batch in a melting tank of a continuous glass furnace to produce molten glass having a first color;
- directing the molten glass from the melting tank into a forehearth;
- transitioning the molten glass in the melting tank from the first color to a second color by modifying the glass batch with respect to at least one element or compound;
- introducing a compensating agent into the molten glass in the forehearth during the transition of the molten glass in the melting tank from the first color to the second color to achieve a target color specification in molten glass being discharged from the forehearth;
- and
- adjusting the introduction of the compensating agent into the molten glass in the forehearth to maintain a color of the molten glass being discharged from the forehearth at the target color specification during the transitioning of the molten glass in the melting tank from the first color to the second color.
Dependencies are inferred from the claim text.