Corning Incorporated
GLASS ARTICLES WITH RESIDUAL STRESS AND VISCOSITY PROPERTIES FOR SAGGING PROCESSES, AND COMPOSITIONS FOR THE SAME

Abstract:

A laminate glass article is provided that includes: a core glass layer comprising a first coefficient of thermal expansion (CTE); and a plurality of clad glass layers, each comprising a first primary surface, a second primary surface in contact with the core glass layer and a second CTE that is lower than the first CTE of the core glass layer. The difference in the first and second CTE is about 10.times.10.sup.-7/#C to about 70.times.10.sup.-7/#C. Further, each of the core glass layer and the clad glass layers comprises a viscosity from 10.sup.9.0 to 10.sup.14.0 Poise from about 550#C to about 700#C.