METHODS OF ADJUSTING TEMPERATURES OF GLASS CHARACTERISTICS AND GLASS ARTICLES PRODUCED THEREBY

摘要

A method is provided for adjusting, e.g., lowering, the melting and/or formi ng and/or liquidus temperatures of a glass composition which can be accomplishe d without substantially changing the bending and annealing temperatures of the glass composition. The method includes decreasing the amount of MgO in the glass composition and increasing the amount of two or more or all of CaO, R2 O (Na2O and K2O), Al2O3 and SiO2 by the same or about the same amount.