Patent classifications
C
CHEMISTRY; METALLURGY
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C03
GLASS; MINERAL OR SLAG WOOL
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C03B
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
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37/00
Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
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C03B37/01
Manufacture of glass fibres or filaments
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C03B37/012
Manufacture of preforms for drawing fibres or filaments
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C03B37/014
made entirely or partially by chemical means; , e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
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C03B37/01446
Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
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C03B37/0146
Furnaces therefor, e.g. muffle tubes, furnace linings
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C03B37/0146

Optical fiber and a glass preform manufacturing method
12617707 · 2026-05-05 ·

The present disclosure relates to a method and an extrusion apparatus (100, 200) to manufacture a soot preform (130). The extrusion apparatus (100 and 200) includes a feed-hopper (104) to feed silica slurry (102) which is pushed within the barrel (106), an iris frame (116) exhibiting a variable diameter to control a diameter of the soot preform (130), drying furnace (118), debinding furnace (122) eliminates moisture and one or more stabilized binders in the soot preform (130) to obtain a glass preform (138) from which an optical fiber (142) is drawn.