Making method of antistatic optical fiber

Abstract

The invention provides a making method of an antistatic optical fiber. The method comprises the following steps: melting and wire-drawing an optical rod; annealing and cooling the molten and wire-drawn optical rod, allowing the cooled optical rod to enter a coating die, and coating the cooled optical rod with an antistatic coating; curing the obtained coating layer in an UV curing device; and reeling the coating layer cured optical fiber around a take-up device. The melting and wire-drawing process of the optical rod is carried out in a graphite furnace. The antistatic coating coated optical fiber adopted in the invention guarantees that the optical fiber in every process before cabling has excellent antistatic performance, improves the optical fiber arranging quality, reduces the optical fiber break rate, effectively improves the optical fiber quality and reduces the optical fiber production cost.

Description

technical field [0001] The invention belongs to the technical field of optical fiber manufacturing and research and development, and in particular relates to an antistatic optical fiber manufacturing method. Background technique [0002] After the preform is melted at high temperature, it is drawn into a bare optical fiber with a specified diameter. After annealing and cooling, two layers of coating are applied respectively. 25-50km small-coil optical fiber, these small-coil optical fibers need two processes of coloring and plastic coating before being cabled. At present, the coatings used in the optical fiber industry have high electrical insulation properties. In the above processes, the coated optical fiber has to pass through dozens of guide wheels with different diameters at high speed. At high speed, a large amount of static electricity is easily generated between the optical fiber and these guide wheels. The accumulated static electricity seriously affects the cable ...

AI Technical Summary

Problems solved by technology

The accumulated static electricity seriously affects the cable arrangement of the optical fiber on the reel, and the fiber with poor cable arrangement will cause the fiber to break in the subsequent high-speed use

At present, the commonly used solution is to install a large number of static electricity removal equipment on the optical fiber take-up machine, screening machine, and coloring machine to eliminate the static electricity generated in the optical fiber production. Although it can eliminate some static electricity to a certain extent, it increases the complexity of the equipment. sex, and the effect is not ideal

Moreover, the service life of the static removal equipment is short, and frequent maintenance and replacement of the static removal equipment increase additional equipment costs and labor costs

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