Apparatus for manufacturing optical fiber made of...

B - Operations – Transporting – 29 – D

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B29D 11/00 (2006.01) D01D 5/08 (2006.01) G02B 6/10 (2006.01)

Patent

CA 2421635

An extruder heats polymer resin to produce molten polymer and supplies the molten polymer at a constant pressure. A gear pump is in fluid communication with the extruder, receives the molten polymer and controls the polymer flow rate. A spinneret is in fluid communication with the gear pump and spins the molten polymer into the optical fibers. A heater controls the temperature of the optical fiber after the fibers exit the spinneret. The optical fibers are slowly cooled from molten to ambient temperature to eliminate radial morphological variations. A take-up roller tensions the optical fibers after the fibers exit the spinneret to maximize crystallization of the molten polymer.

L'invention concerne une extrudeuse destinée à réchauffer une résine polymérique pour produire un polymère fondu et à injecter le polymère fondu à une pression constante. Une pompe à engrenages est en communication fluidique avec l'extrudeuse, reçoit le polymère fondu et régule le débit de polymère. Une filière est en communication fluidique avec la pompe à engrenages et file le polymère fondu en fibres optiques. Un élément chauffant permet de régler la température de la fibre optique après la sortie de la fibre de la filière. Les fibres optiques sont refroidies lentement de la température de fusion à la température ambiante de manière à éliminer les variations morphologiques radiales. Un rouleau de tension sert à tendre les fibres optiques suite à la sortie des fibres de la filière afin de maximiser la cristallisation du polymère fondu.

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