US 12,448,312 B2
Glass production method
Nobutoshi Ito, Otsu (JP); Kazuto Nakatsuka, Otsu (JP); and Tsubasa Kagai, Otsu (JP)
Assigned to NIPPON ELECTRIC GLASS CO., LTD., Shiga (JP)
Appl. No. 18/285,773
Filed by NIPPON ELECTRIC GLASS CO., LTD., Otsu (JP)
PCT Filed Mar. 22, 2022, PCT No. PCT/JP2022/012958
§ 371(c)(1), (2) Date Oct. 5, 2023,
PCT Pub. No. WO2022/215505, PCT Pub. Date Oct. 13, 2022.
Claims priority of application No. 2021-065148 (JP), filed on Apr. 7, 2021.
Prior Publication US 2024/0368016 A1, Nov. 7, 2024
Int. Cl. C03B 5/185 (2006.01); C03B 5/02 (2006.01)
CPC C03B 5/185 (2013.01) [C03B 5/021 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A glass production method comprising the steps of:
turning a raw material placed in a container into a melt;
homogenizing the melt; and
removing a gas from the melt,
heating the melt and discharging the melt from the container after the step of removing the gas from the melt, wherein
at least one of the step of turning the raw material into the melt and the step of homogenizing the melt is performed in an atmosphere of an inert gas or a reducing gas,
in the step of removing the gas from the melt, the inert gas or the reducing gas is removed by setting the temperature of the melt to be lower than the temperature in the step of homogenizing the melt,
the at least one of the step of turning the raw material into the melt and the step of homogenizing the melt is performed in an atmosphere of one of the inert gas and the reducing gas,
the step of discharging the melt from the container is performed in an atmosphere of the other of the inert gas and the reducing gas in the container, and
the glass is chalcogenide glass.