Self-supporting rat-proof optical fiber cable and its manufacturing method

Abstract

The invention relates to a self-supporting rat-proof optical fiber cable and a manufacturing method thereof, wherein the optical cable comprises a cable core and an outer sheath. An inner protection sheath is arranged on the outer part of the cable core; the outer part of the inner protection sheath is provided with a spliced layer for bite-and-peck preventing. The spliced layer for bite-and-peck preventing is spliced by flat FRP strips along the circumferential direction of the inner protection sheath; and an outer protection sheath is coated on the spliced layer for bite-and-peck preventing. The flat FRP strips are not only solid and smooth but also densely distributed on the outer layer of the cable core to make the optical cable possess a strong performance to prevent the biting of rats and pecking of birds. The flat FRP strips, as self-supporting anti-pulling component, are combined with an outer protection sheath to form a composite outer protection layer. The outer protection layer not only possesses an excellent performance of preventing rat biting and bird pecking, but also has a strong ability to withstand drawing force and flattening force, making the optical fiber with a self-supporting performance. The optical fiber is simple and reasonable in structure. The protection ability of the optical cable is strong; the cable is soft; and a good bending performance is achieved; all these advantages make the optical cable used and paved easily. The arrangement of an inner protection sheath facilitates the division of the optical cable; and the use of a physical bite-preventing structure is easy to make, and does not cause environmental pollution.

Description

technical field [0001] The invention relates to a self-supporting rodent-proof optical cable and a manufacturing method thereof, belonging to the technical field of optical communication transmission. Background technique [0002] The self-supporting tensile elements used for self-supporting non-metallic optical cables are usually spun fibers. After laying, these optical cables will be bitten and attacked by various rodents and some birds, thus gradually losing their self-supporting ability. Using glass fiber yarn as the tensile element of the optical cable, although it has a certain anti-rat ability, but as a self-supporting tensile element, because it cannot be a whole by itself, once the outer sheath is damaged, its self-supporting tensile ability will drop sharply, and Not resistant to puncture by rodent teeth. The glass fiber tape is used to prevent rats, and the hardness and thickness of the material are limited. The optical cable made of it is stiff, and the bending ...

AI Technical Summary

Problems solved by technology

Using glass fiber yarn as the tensile element of the optical cable, although it has a certain anti-rat ability, but as a self-supporting tensile element, because it cannot be a whole by itself, once the outer sheath is damaged, its self-supporting tensile ability will drop sharply, and Not resistant to puncture by rodent teeth

The glass fiber tape is used to prevent rats, and the hardness and thickness of the material are limited. The optical cable made of it is stiff, and the bending radius of the optical cable reel is particularly large, which brings inconvenience to use and laying.

Adding capsicum to the sheath to prevent rodents will not only produce a lot of irritating odors during production, pollute the surrounding air, and seriously affect the normal work of production personnel, but with the gradual diffusion of additives, the rodent-proof performance will also increase. drop with it

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