Process for production of glass article

Details Process for production of glass article Process for production of glass article

C - Chemistry, Metallurgy

03

B

C03B 19/09 (2006.01) C03B 8/04 (2006.01) C03B 37/014 (2006.01)

Patent

CA 2072194

- 12 - ABSTRACT OF THE DISCLOSURE There is provided a process for the production of a glass article in which a fine glass particle deposited body produced by a vapor phase synthesis process is thermally treated and vitrified under an atmosphere of a reduced pressure in a muffle tube of a vacuum furnace placed in a vacuum vessel so that the glass article is obtained, characterized in that the vacuum furnace with the muffle tube is prebaked at a baking temperature not lower than a vitrification temperature of the fine glass particle deposited body while the vacuum vessel is evacuated before the fine glass particle deposited body is vitrified.

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