Process for optical fiber drawing and primary coating

A technology of secondary coating and optical fiber, which is applied in the field of optical fiber drawing and primary coating process, to achieve the effect of saving energy consumption, protecting the performance of optical fiber, and being beneficial to production efficiency

Inactive Publication Date: 2015-09-09
成都亨通光通信有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problem that further optimizing the optical fiber drawing process by the tube-rod method will undoubtedly further improve the quality of existing optical fiber products and improve the production efficiency of optical fiber products, the present invention provides an optical fiber drawing and one-time coating process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An optical fiber drawing and one-time coating process, comprising the following steps carried out in sequence:

[0019] 1) Put the preform in the heating furnace to soften the preform;

[0020] 2) Under the traction force of winding, the optical fiber is led out from the top of the preform rod to obtain a coiled optical fiber product. In step 2), a coating process is carried out synchronously with step 2), and the coating process is Coating container and curing equipment are set on the pulling and moving route of the optical fiber, so that the optical fiber drawn from the top of the preform passes through the coating container and curing equipment respectively, and the impregnation of the coating and the curing on the surface of the optical fiber are completed, and the coating The coating container is a guide tube coater.

[0021] In this embodiment, the coating process in the optical fiber manufacturing process is integrated into the drawing process, so that a coating...

Embodiment 2

[0023] This example is further limited on the basis of Example 1. As a specific coating scheme, the coating liquid used in the coating process is ethylene-vinyl acetate copolymer, and the coating temperature is between 47°C and 53°C. between ℃.

[0024] In order to enable the optical fiber at the outlet of the heating furnace to enter the coating process faster, to improve the production efficiency of the optical fiber and ensure the surface quality of the optical fiber, the coating process is arranged on the outlet end of the heating furnace. A cooling process is provided. The above cooling process can be realized by circulating cooling water and passing through drying equipment.

[0025] In order to avoid the impact of sudden cooling on the quality and performance of the optical fiber, further, the cooling process is carried out in multiple steps, that is, the cooling process is to sequentially set a plurality of cooling environments with gradually lower temperatures on the...

Embodiment 3

[0027] This embodiment is further limited on the basis of any one of the above embodiments. In order to facilitate the coating quality, the curing device is provided with an inert gas protective atmosphere.

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PUM

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Abstract

The invention discloses a process for optical fiber drawing and primary coating. The process comprises the following steps in sequence: (1) putting a precast rod into a heating furnace to soften the precast rod; and (2) drawing out optical fibers from the top end of the precast rod under the traction of winding to obtain a volumed optical fiber product, wherein the step (2) also comprises a coating process carried out synchronously with the step (2), and in the coating process, a coating container and curing equipment are arranged on a traction movement line of the optical fibers to ensure that the optical fibers drawn out from the top end of the precast rod pass through the coating container and the curing equipment respectively so as to finish dip dyeing of the primary coating and curing on surfaces of the optical fibers, and the coating container is a guide pipe coating device. The process disclosed by the invention is beneficial for improving the optical fiber production efficiency, the optical fiber surface coating quality and the optical fiber quality.

Description

technical field [0001] The invention relates to a method for making a communication cable, in particular to an optical fiber drawing and one-time coating process. Background technique [0002] Optical fiber, referred to as optical fiber, is a light transmission tool that transmits light on the principle of total reflection in fibers made of glass or plastic. The tiny fiber is encapsulated in a plastic sheath that allows it to be bent without breaking. Typically, a transmitting device at one end of the fiber uses a light-emitting diode or a laser to transmit light pulses into the fiber, and a receiving device at the other end of the fiber uses a photosensitive component to detect the pulses. Cables that contain optical fibers are called fiber optic cables. Because the transmission loss of light in optical fibers is much lower than that of electricity in wires, and because the main raw material is silicon, which has a huge reserve and is easy to mine, it is cheap, which prom...

Claims

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Application Information

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IPC IPC(8): C03C25/12C03C25/28C03B37/025
CPCY02P40/57
Inventor 孙义兴王耀明许建国彭志勇刘东李涛
Owner 成都亨通光通信有限公司
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