Pulling roll material for manufacture of sheet glass
AssigneeCorning Incorporated
InventorsDean Veral Neubauer, Maurice Lacasse
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Abstract
A pulling roll for glass manufacture 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.
Claims11
A pulling roll for glass manufacture 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;
- 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 comprises at least 85 weight percent of the millboard piece.
A method for manufacturing a pulling roll, comprising:
- providing at least one millboard piece in the form of a pulling roll, comprising:
- a. from about 5 to about 30 parts by weight aluminosilicate refractory fiber;
- 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 comprises at least 85 weight percent of the millboard;
- and densifying at least a portion of the millboard piece by exposing the millboard
- piece to a temperature of from about 650° C. to about 1,000° C.
Dependencies are inferred from the claim text.