Anti-cracking optical cable and production process of armor layer in the anti-cracking optical cable

Abstract

The invention discloses an anti-cracking optical cable and a production process of an armor layer in the anti-cracking optical cable, and relates to the technical field of optical fibers and optical cables. According to the anti-cracking optical cable and the production process of the armor layer of the anti-cracking optical cable, logic is clear, steps are orderly, the structure is stable, machining is convenient, and the situation that in the production process, two layers of metal strips at the lap joint position of a steel-plastic composite belt are staggered and even cracked and damaged can be effectively avoided. The cable comprises a cable core, and the cable core is of a common beam tube type layer-stranded structure or a strip-shaped beam tube type layer-stranded structure. The gap of the cable core is filled with a water-blocking material, and the water-blocking material is of a filling type or semi-dry type structure. The cable core is longitudinally wrapped with an embossed steel-plastic composite tape to form an armor layer, and the lap joint of the embossed steel-plastic composite tape is bonded through a hot melt adhesive. The armor layer is wrapped with an outer sheath. The anti-cracking optical cable can ensure that the overlapping parts of the embossed steel-plastic composite belts are not mutually staggered to generate shearing force to cause cracking of the outer sheath layer when the optical cable is twisted, and has the advantages of stable structure, convenience in processing and the like.

Description

technical field [0001] The invention relates to the technical field of optical fiber and optical cable, in particular to a production process of a corrugated steel-plastic composite tape longitudinally-wrapped armored anti-crack optical cable and its sheath. Background technique [0002] With the vigorous advancement of 5G network construction, the application of optical fiber ribbon optical cable and ordinary layer-twisted large-core optical cable is gradually increasing. Although the steel-plastic composite tape embossed longitudinal wrapping armoring process has been widely used in China, when the outer diameter of the optical cable is large, the optical cable produced by the conventional embossed steel-plastic composite tape longitudinal wrapping process will suffer from repeated twisting times during the construction process. Too much, the two layers of metal belts at the overlap of the steel-plastic composite belt will displace each other, forming repeated shearing for...

AI Technical Summary

Problems solved by technology

Although the steel-plastic composite tape embossed longitudinal wrapping armoring process has been widely used in China, when the outer diameter of the optical cable is large, the optical cable produced by the conventional embossed steel-plastic composite tape longitudinal wrapping process will suffer from repeated twisting times during the construction process. Too much, the two layers of metal belts at the overlap of the steel-plastic composite belt will displace each other, forming repeated shearing forces, which will easily cause the outer sheath at the overlap to crack

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