C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
32/23, 49/8, 117
C03B 37/018 (2006.01)
Patent
CA 1228773
ABSTRACT A process for forming an optical fire preform by causing a uniform layer of glass particles to be deposited on the internal wall of a supporting tube rotated around its axis, the particles being formed at an inlet end of a tube, and the temperature gradient along the tube being controlled to maintain a constant rate of deposition along its length. Various different types of heat sources are disclosed for generating within the tube the temperature gradient required by the process.
462986
Ridout & Maybee Llp
Telecom Italia Lab Spa
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