C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 19/06 (2006.01) C03B 37/014 (2006.01)
Patent
CA 2363356
A method for sintering a porous-glass material to form a glass base material, which is a base material for an optical fiber, comprising: preparing a ring heater having an opening, through which the porous-glass material passes, for heating the porous-glass material;selecting the porous-glass material having an outer diameter (d) within a predetermined range, the predetermined range being determined based on an inner diameter (D) of the opening of the ring heater; and heating the porous-glass material in an atmosphere of dehydration gas and inert gas with the ring heater.
Kamio Takeshi
Yoshida Makoto
Riches Mckenzie & Herbert Llp
Shin-Etsu Chemical Co. Ltd.
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