The Chemical Composition of Glasses Suitable for the Manufacture of Window Glass by the Automatic Drawing Process

JSGT 1936 V20 T170-T180

 The authors have studied the effect on the rate of melting and refining, the chemical durability, the viscosity at high temperature, softening temperature and devitrification temperature, of making small substitutions in a general glass formula suitable for the manufacture of sheet glass by the automatic drawing process. In particular a study was made of the most suitable ratio of CaO:MgO and the effect also of substituting, within the total range of 1·5%, Na₂O by Al₂O₃, SiO₂, B₂O₃, and ZnO, respectively. The results are presented in a series of tables and curves.

K. Kamita, H. Yamamoto, M. Matsuo, H. Yagai & H. Ota