An optical fiber production process
A production process and optical fiber technology, applied in manufacturing tools, glass manufacturing equipment, etc., can solve problems such as a large number of air bubbles, achieve the effects of reducing air bubbles, ensuring mechanical properties, and ensuring stirring depth
Active Publication Date: 2022-03-04
HANGZHOU FUTONG COMM TECH CO LTD
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Problems solved by technology
[0003] In view of the above problems, the present invention proposes an optical fiber production process, which solves the defect that a large number of bubbles are easily generated in the coating process in the existing optical fiber production process
Method used
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Embodiment 1
[0032] Embodiment one: the present invention also discloses a kind of optical fiber production technology (see attached figure 1 ), including the following steps:
[0033] 1) Melting wire drawing process: the preform is melted at 2200°C-2300°C, and is drawn by its own gravity;
[0034] 2) Shaping and cooling process: the drooping optical fiber is first cooled and shaped by the optical fiber cooling device 100, and then further cooled by the cooling pipe;
[0035] 3) Primary coating process: the resin is delivered to the coating device through the resin supply system 200, and the coating device coats the resin on the outer surface of the optical fiber;
[0036] 4) Primary curing process: the optical fiber coated with resin is cured by ultraviolet light curing equipment to form a primary coating layer;
[0037] 5) Secondary coating process: the resin is transported to the coating device through the resin supply system, and the coating device coats the resin on the outer surfac...
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The invention discloses an optical fiber production process, which comprises the following steps: 1) melting and drawing process; 2) shaping and cooling process; 3) primary coating process; 4) primary solidification process; 5) secondary coating process; Secondary curing process; there is a helium chamber inside the optical fiber cooling device; the resin supply system includes a resin supply storage tank and a resin static tank; the top of the stirring shaft is connected to the helium gas outlet pipeline through a sealed conversion joint; From top to bottom, it passes through the helium gas outlet pipeline and the hollow stirring shaft and extends into the bottom of the tank; the other end of the suction pipeline is connected to the resin static tank; The end of the road is connected to the resin static tank. The present invention replaces the air in the resin supply storage tank by using the helium in the optical fiber cooling device, because the molecular weight of the helium is small, it is easy to permeate out of the resin, and the residual bubbles in the resin are reduced as little as possible; The coating process in the production process is prone to the defect of a large number of bubbles.
Description
technical field [0001] The invention relates to the field of optical fiber production, in particular to an optical fiber production process. Background technique [0002] In the drawing production process of optical fiber, the bare optical fiber formed by drawing needs to be coated. This is because the main component of the bare optical fiber is silica, which is a fragile material. Coating resin can protect the optical fiber and effectively avoid mechanical damage. and is affected by moisture and retains its original strength. In optical fiber production, as a link in the optical fiber manufacturing process next to variable diameter drawing, the stability of the coating system is particularly prominent. Due to the high viscosity of UV resin, in the existing coating system, air bubbles are easy to accumulate in the resin during the refueling process, resulting in a large number of air bubbles in the resin, and the resin with air bubbles is coated on the optical fiber, affect...
Claims
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IPC IPC(8): C03C25/1065C03C25/105C03C25/12C03B37/025
CPCC03C25/1065C03C25/105C03C25/12C03B37/025
Inventor 吴海港
Owner HANGZHOU FUTONG COMM TECH CO LTD