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Priority to JP40018390UpriorityCriticalpatent/JPH0489523U/ja
Publication of JPH0489523UpublicationCriticalpatent/JPH0489523U/ja
C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
C03B37/01—Manufacture of glass fibres or filaments
C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
C03B37/029—Furnaces therefor
C—CHEMISTRY; METALLURGY
C03—GLASS; MINERAL OR SLAG WOOL
C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
C03B2205/00—Fibre drawing or extruding details
C03B2205/60—Optical fibre draw furnaces
C03B2205/82—Means for sealing the fibre exit or lower end of the furnace