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US 8,261,448 B2Granted
Pulling roll material for manufacture of sheet glass
AssigneeCorning Incorporated
InventorsDean Veral Neubauer, Maurice Lacasse
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Abstract
A method of making sheet glass using a pulling roll comprised of a high-temperature millboard material. The millboard comprises aluminosilicate refractory fiber, silicate, mica, and kaolin clay. A method of manufacturing a pulling roll is disclosed, together with a roll produced by the methods disclosed herein. The method comprises forming a pulling roll and densifying at least a portion of the pulling roll by exposing to the pulling roll to high temperatures.
Claims6
A method of making a sheet glass using a pulling roll comprising at least one millboard piece, wherein the at least one millboard piece comprises:
- a. from about 5 to about 30 parts by weight aluminosilicate refractory fiber, said aluminosilicate refractory fiber having a length up to 5 microns;
- b. from about 10 to about 30 parts by weight silicate;
- c. from about 5 to about 25 parts by weight mica;
- and
- d. from about 10 to about 35 parts by weight kaolin clay;
- wherein the combination of a, b, c, and d comprise at least 85 weight percent of the millboard piece.
3 more elements
Dependencies are inferred from the claim text.