Optical fibre draw furnaces

Full Title

Fibre drawing or extruding details > Optical fibre draw furnaces

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• C03B 2205/61 Recovering, recycling or purifying the inert gas, e.g. helium
• C03B 2205/62 Heating means for drawing
• C03B 2205/70 Draw furnace insulation
• C03B 2205/72 Controlling or measuring the draw furnace temperature
• C03B 2205/74 Means for moving at least a part of the draw furnace, e.g. by rotation or vertical or horizontal movement
• C03B 2205/80 Means for sealing the preform entry or upper end of the furnace
• C03B 2205/82 Means for sealing the fibre exit or lower end of the furnace
• C03B 2205/90 Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles