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Miniature optical cable and its preparation method and the outer sheath material of the miniature optical cable

An outer sheath and optical cable technology, applied in the field of optical fiber and optical cable, can solve the problems of large limitations and unfavorable comprehensive disconnection, and achieve the effect of easy control and ensure the quality of the cable.

Active Publication Date: 2020-12-29
JIANGSU TRIGIANT OPTOELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the structure of the optical cable has been adjusted to reduce the outer diameter of the product, the number of optical fibers contained in this type of optical cable is only one, which is not conducive to the integration of wires, and the limitations are too large

Method used

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  • Miniature optical cable and its preparation method and the outer sheath material of the miniature optical cable
  • Miniature optical cable and its preparation method and the outer sheath material of the miniature optical cable

Examples

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Effect test

Embodiment 1

[0019] Such as figure 1 As shown, the present invention provides a kind of miniature optical cable, a kind of miniature optical cable, comprises cable core, and described cable core is stranded by central reinforcing steel wire 2 and several bundle tubes 3 that surround outside strengthening member, and in There are several optical fibers 1 inside the bundle tube 3; a stainless steel belt 6 is wrapped around the cable core, and a rodent-proof and flame-retardant outer sheath 4 is extruded on the outermost layer of the cable core; the stainless steel belt layer is a double-layer wrapping structure , it is not easy to be pried open by mice, which has the effect of preventing rats from biting; and coating the heat insulation film on the surface of the stainless steel belt layer, which effectively achieves the effect of heat insulation; there are several auxiliary reinforcements inserted in the rodent-proof flame-retardant sheath Wire 5.

[0020] As a further improvement, the mat...

Embodiment 2

[0025] The present invention also provides a kind of preparation method of miniature optical cable, comprises the following steps:

[0026] 1) The optical fiber 1 is colored by UV curing, the fiber 1 pay-off tension is 65g±5g, the take-up tension is 75g±5g, and the production speed is 1200m / min. (Compared with conventional production, this process increases the tension of pay-off and take-up, and at the same time reduces the production speed from 2400 m / min to 1200 m / min.) Through this kind of process adjustment, the quality of optical fiber wiring is guaranteed, which is convenient for micro-bundle tubes. Fiber excess length control.

[0027] 2) Since the outer diameter of the bundle tube 3 is only 1.6, the space inside the tube is too small. In order to reduce the fiber breakage of the optical fiber 1 in the tube, the front oil needle is changed from a squeeze tube type to a bald oil needle.

[0028] 3) The material of the bundle tube 3 is changed from PBT to polyurethane. ...

Embodiment 3

[0034] The present invention also provides an outer sheath material of a miniature optical cable, comprising the following components in parts by weight: 100 parts of high-density polyethylene, 54 parts of flame retardant, 20 parts of smoke suppressant, 12 parts of EVA, 4 parts of carbon black 4 parts, 4 parts of repellent, 0.5 part of stabilizer, 0.5 part of biasing agent, 5 parts of lubricant, 5 parts of Linglong grass powder.

[0035] Wherein, the flame retardant is magnesium hydroxide, and the smoke suppressant is hydrocarbon.

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Abstract

The invention provides a miniature optical cable, a method for preparing the same and an outer sheath material for the miniature optical cable. The miniature optical cable comprises a cable core. The cable core comprises a central reinforcement steel wire and a plurality of bundle tubes around reinforcement components, the central reinforcement steel wire and the bundle tubes are stranded to form the cable core, and a plurality of optical fibers are arranged in each bundle tube; a stainless steel band is lapped on the outside of the cable core, and a rat-proof and flame-retardant outer sheath is extruded on an outermost layer of the cable core; a stainless steel band layer is of a double-layer lapped structure, and heat-insulation films are coated on the surface of the stainless steel band layer; a plurality of auxiliary reinforcement steel wires are inserted into the rat-proof and flame-retardant outer sheath. The miniature optical cable, the method and the outer sheath material have the advantages that the diameter of the miniature optical cable is reduced on the premise that the structural strength and the tensile properties are guaranteed, the method is simple and convenient, the outer sheath for the miniature optical cable is abrasion-resistant, ultralow-smoke, halogen-free and rat-repellent, and the like.

Description

technical field [0001] The invention relates to the field of optical fiber cables, in particular to a micro-optic cable, a preparation method thereof, and an outer sheath material of the micro-optic cable. Background technique [0002] Buildings pursue comprehensive, intelligent, broadband, and personalized information and communication network integrated wiring system (PDS) came into being. With the rapid development of FTTB and FTTH technology, optical cables have been more and more widely used in building integrated wiring systems (including horizontal and vertical wiring systems). [0003] Due to the special environment of the application, the optical cable must meet the requirements of international standards for toxicity, corrosion and low smoke while maintaining very good flame retardancy, mechanical properties and optical transmission properties. Floor-to-floor lifting of optical cables in vertical systems, applications in narrow spaces in communication cabinets in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/44
CPCG02B6/443G02B6/4434G02B6/4436G02B6/4486
Inventor 潘家乐夏建军陈科晔殷翔飞代庸
Owner JIANGSU TRIGIANT OPTOELECTRONICS TECH
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