Method for making float glass having reduced defect density

Details Method for making float glass having reduced defect density Method for making float glass having reduced defect density

2007-01-16

2007-01-16

Lorengo, J. A. (Department: 1755)

Glass manufacturing

Processes

Forming product or preform from molten glass

C501S064000, C501S070000, C501S071000, C065S099100, C065S099200

Reexamination Certificate

active

10672025

ABSTRACT:
A method for reducing the defect density of glass comprising melting a glass composition comprising from 65–75 wt. % of SiO2; from 10–20 wt. % of Na2O; from 5–15 wt. % of CaO; from 0–5 wt. % of MgO; from 0–5 wt. % of Al2O3; from 0–5 wt. % of K2O; from 0–2 wt. % Fe2O3; and from 0–2 % FeO, wherein the glass composition has a total field strength index of greater than or equal to 1.23 is disclosed.

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International Search Report Dated Feb. 27, 2004.
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