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Method for decreasing bubble lifetime on a glass melt surface

A bubble and life technology, applied in glass furnace equipment, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of increased surface tension and entrainment of bubble film

Active Publication Date: 2021-09-03
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bubbles rising to the surface are generally expected to spontaneously collapse, or "pop" quickly on reaching the surface, but in some cases this may not be the case and thus risk being re-entrained into the molten glass
This delay in bubble bursting may be the result of increased surface tension of the bubble membrane

Method used

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  • Method for decreasing bubble lifetime on a glass melt surface
  • Method for decreasing bubble lifetime on a glass melt surface
  • Method for decreasing bubble lifetime on a glass melt surface

Examples

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Embodiment Construction

[0033] Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[0034] Ranges can be expressed herein as from "about" one particular value, and / or to "about" another particular value. When such a range is expressed, another embodiment includes from the one particular value and / or to the other particular value. Similarly, when values ​​are expressed as approximations, by use of the antecedent "about," it will be understood that the particular value forms another embodiment. It will also be understood that the association of the endpoints of each range to the other endpoints is important as well as being independent of the other endpo...

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PUM

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Abstract

A method of reducing bubble lifetime on the free surface of a volume of molten glass contained within or flowing through a vessel including a free volume above the free surface, thereby minimizing re-entrainment of the bubbles back into the volume of molten glass and reducing the occurrence of blisters in finished glass products. The method includes vaporizing a volatile material, entraining the vapor in a carrier gas to form an enrichment gas, and flowing the enrichment gas into the free volume to increase a concentration of the volatile material at the surface of the molten glass in the vessel.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to U.S. Provisional Application No. 62 / 770,250, filed November 21, 2018, the contents of which are the basis of this application and are hereby incorporated by reference in their entirety as if made below fully elaborated. technical field [0003] The present disclosure relates generally to methods for forming glass articles, and more particularly to methods for introducing a surfactant into a vessel to reduce bubble lifetime at the surface of a volume of molten glass in the vessel. Background technique [0004] The manufacture of optical quality glass articles, such as glass substrates used to make lighting panels, or liquid crystal or other forms of visual displays, involves high temperature processing that involves conveying molten glass through various channels, such as vessels. Some of these channels may contain free volume, such as a gaseous atmosphere above the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B5/20C03B5/235C03B7/096
CPCC03B7/07C03B5/225C03B5/16C03B5/20C03B5/235C03B7/096
Inventor L·R·V·C·阿德金斯W·G·多菲尔德
Owner CORNING INC