Acid-leachable glass for manufacturing flexible optical fiber bundle

Abstract

Abstract PURPOSE:To obtain glass requiring no excessive reduction of the slit width of a nozzle and causing no breaking of a glass layer due to the eccentricity of the nozzle by reducing the amount of BaO furthermore and specifying the amounts of SiO2, B2O3 and BaO, the total amount of them, and the total amount of one or more among Na2O, K2O and Li2O. CONSTITUTION:This glass consists of, by mole, 20.0%<SiO2<49.0%, 25.0%< B2O3<50.0%, 0.1%<BaO<5.0% and 9.0%<(one or more among Na2O, K2O and Li2O)<18.0% while satisfying 71.0%<(SiO2+B2O3+BaO)<90.0%. In case of not more than the lower limit of BaO, it is difficult to obtain sufficient water resistance, and in case of not less than the upper limit of BaO, it is difficult to attain the spinning temp.

Inventors

• 👤 Isatomo Harada
• 👤 原田　勇朋
• 👤 Shigeo Kuwayama
• 👤 桑山　重男

Bibliographic Details