Methods for forming thin glass sheets
AssigneeCorning Incorporated
InventorAllan Mark Fredholm
Life of this patent
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Abstract
According to one or more embodiments disclosed herein, a glass sheet may be formed by a method which includes supplying a feed of molten glass to an upper surface of a pair of forming rolls, and rotating the pair of forming wheels to continuously form a glass sheet from the molten glass. The pair of forming rolls may be spaced apart by a forming gap, and the forming gap may have a width of less than or equal to about 800 microns. The molten glass may have a viscosity of less than or equal to about 200 poise. The glass sheet may have a thickness of less than or equal to about 800 microns immediately upon passing though the forming gap.
Claims20
A method for forming a glass sheet, the method comprising:
- supplying a feed of molten glass to an upper surface of a pair of forming rolls, the pair of forming rolls spaced apart by a forming gap, the forming gap having a width of less than or equal to about 800 microns, wherein the molten glass has a viscosity of less than or equal to about 200 poise;
- rotating the pair of forming rolls to continuously form a glass sheet from the molten glass, the glass sheet having a thickness of less than or equal to about 800 microns immediately upon passing though the forming gap.
A method for forming a high refractive index glass sheet, the method comprising:
- supplying a feed of molten glass to an upper surface of a pair of forming rolls, the pair of forming rolls spaced apart by a forming gap, the forming gap having a width of less than or equal to about 800 microns, wherein the molten glass has a viscosity of less than or equal to about 200 poise;
- rotating the pair of forming rolls to continuously form a glass sheet from the molten glass, the glass sheet having a thickness of less than or equal to about 800 microns immediately upon passing though the forming gap;
- wherein the glass composition of the glass sheet has a refractive index of about 1.7 or greater and a liquidus viscosity of about 200 poise or less.
Dependencies are inferred from the claim text.