Optical fibre manufacture

Details Optical fibre manufacture Optical fibre manufacture

1985-05-23

1986-11-11

Smith, John D.

Coating processes

Optical element produced

Polarizer, windshield, optical fiber, projection screen, or...

118404, 118405, 118429, 427164, 427169, 427356, 427358, 4274342, 4274344, 4274345, 4274346, 4274347, B05D 506

Patent

active

046222421

ABSTRACT:
A variable-temperature pressure coating system for optical fibres, particularly for uv-curable primary coatings, includes a gas cylinder (8) for pressurizing a tank (1) of coating material, and a heat exchanger (15) controlling the temperature and thus the viscosity of the coating material supplied to a die chamber (19) through which an optical fibre (18) is passed following drawing. The temperature of the die chamber may also be controlled by the same circuit as the heat exchanger. A valve (14) serves to control flow to the die and to enable priming of the tube (13) by filling with coating material (and removal of air bubbles) prior to supply thereof to the die chamber (19). The system is designed for ease of operator handling together with production of high quality coatings at high speed.

REFERENCES:
patent: 2748886 (1956-06-01), Wildebour
patent: 3960530 (1976-06-01), Iyengar
patent: 4073974 (1978-02-01), Albarino
patent: 4374161 (1983-02-01), Geyling
patent: 4409263 (1983-10-01), Aloisio et al.
patent: 4522148 (1985-06-01), Kassahun et al.
patent: 4533570 (1985-08-01), Iyengar
patent: 4539226 (1985-09-01), Paek et al.
Patent Abstracts of Japan, Unexamined Applications Kokai-No. 56-5342 (Nippon Denshin Denwa Kosha).

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