CN113866921B - Flexible skeleton type optical fiber ribbon optical cable and preparation method thereof - Google Patents
Flexible skeleton type optical fiber ribbon optical cable and preparation method thereof Download PDFInfo
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- CN113866921B CN113866921B CN202111192655.XA CN202111192655A CN113866921B CN 113866921 B CN113866921 B CN 113866921B CN 202111192655 A CN202111192655 A CN 202111192655A CN 113866921 B CN113866921 B CN 113866921B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 97
- 230000003287 optical effect Effects 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 238000001125 extrusion Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 11
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 10
- 239000003063 flame retardant Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000004040 coloring Methods 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 52
- 239000000835 fiber Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 239000011152 fibreglass Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4403—Optical cables with ribbon structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/448—Ribbon cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4486—Protective covering
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Communication Cables (AREA)
Abstract
The invention relates to a flexible skeleton type optical fiber ribbon optical cable and a preparation method thereof, the flexible skeleton type optical fiber ribbon optical cable comprises a central reinforcing part and a multi-sector sheath wrapped outside the central reinforcing part, the multi-sector sheath comprises a sleeve layer and a sheath layer which are sequentially sleeved outside the central reinforcing part, a plurality of separation layers respectively connected with the sleeve layer and the sheath layer are arranged between the sleeve layer and the sheath layer, the sleeve layer, the separation layers and the sheath layer are integrally formed, a plurality of annular spaces between the sleeve layer and the sheath layer are separated into a plurality of sector sections, and an optical fiber ribbon is filled in the sector sections. The invention improves the ratio of the optical fiber ribbon in the skeleton structure, is suitable for preparing the skeleton optical cable with large core number, and adopts the integrally formed multi-sector sheath to replace the layered coating structure, thereby having simple structure and easy manufacture and further improving the water blocking performance.
Description
Technical Field
The invention relates to the technical field of structural design and preparation methods of optical cables, in particular to a flexible skeleton type optical fiber ribbon optical cable and a preparation method thereof.
Background
With the rapid development of optical fiber communication industry, the information demand increases dramatically, and the conventional small-core optical cable has hardly satisfied the actual communication requirement. Skeleton-type optical fiber ribbon cables are attracting attention because of their high optical fiber density, convenience in construction and installation, and other advantages. Skeleton-type optical fiber ribbon cables are rapidly being developed and applied in the rapid development of metropolitan area networks and access networks. The skeleton type optical cable has the characteristics of small cable diameter, light weight, good flexibility, strong lateral pressure resistance and the like, but the manufacturing equipment of the skeleton type optical fiber ribbon optical cable is complex, the process links are more, the production technical difficulty is high and the like are also always plagued for manufacturing enterprises.
Referring to fig. 1, in the conventional skeleton-type optical fiber ribbon cable, dry optical fiber ribbons are placed in a matrix form in a U-shaped spiral skeleton groove or an SZ spiral skeleton groove, water-blocking ribbons are wound around the skeleton, so that the skeleton and the water-blocking ribbons form a closed cavity, when the water-blocking ribbons are swelled by water to generate a water-blocking gel barrier, the water-blocking ribbons are longitudinally covered with double-sided plastic-coated steel ribbons outside the water-blocking ribbons, and the polyethylene outer protective layer is extruded on the steel ribbons.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problems existing in the traditional skeleton type optical fiber ribbon optical cable structure and the preparation process in the prior art, and the invention provides the flexible skeleton type optical fiber ribbon optical cable and the preparation method thereof, which are suitable for preparing the large-core-number skeleton optical cable by improving the proportion of the optical fiber ribbon in the skeleton structure on one hand and adopting the integrally formed multi-sector sheath to replace the layered coating structure on the other hand, and have the advantages of simple structure, easy manufacture and further improved water blocking performance.
In order to solve the technical problems, the invention provides a flexible skeleton type optical fiber ribbon optical cable, which comprises a central reinforcing part and a multi-sector sheath coated outside the central reinforcing part, wherein the multi-sector sheath comprises a sleeve layer and a sheath layer which are sequentially sleeved outside the central reinforcing part, a plurality of separation layers respectively connected with the sleeve layer and the sheath layer are arranged between the sleeve layer and the sheath layer, the sleeve layer, the separation layers and the sheath layer are integrally formed, a plurality of annular spaces between the sleeve layer and the sheath layer are separated into a plurality of sector sections, and an optical fiber ribbon is filled in each sector section.
In one embodiment of the invention, a plurality of the separation layers are circumferentially and uniformly distributed in the annular space to divide the annular space into a plurality of sector-shaped sections with equal areas.
In one embodiment of the invention, a plurality of said separator layers are unidirectionally helically stranded within said annular space, said scalloped regions being formed as spaced helical patterns also between the sleeve layer and the jacket layer.
In one embodiment of the present invention, the optical fiber ribbons are layered in the fan-shaped section, and the optical fiber ribbons are formed by splicing a plurality of loose optical fibers side by side with a ribbon resin.
In one embodiment of the invention, the voids between the layers of the optical fiber ribbons and between the optical fiber ribbons and the spacer layer are filled with water blocking yarns.
In one embodiment of the invention, the central reinforcement is a fiberglass rod of non-metallic material.
In one embodiment of the invention, the multi-sector sheath is extruded from a tracking resistant flame retardant polyethylene material.
In order to solve the technical problems, the invention also provides a preparation method of the flexible skeleton type optical fiber ribbon cable, which comprises the following steps:
Preparing an optical fiber ribbon;
preparing a multi-sector sheath outside the central reinforcing piece, adopting an extrusion molding S-shaped twisting technology, setting a runner through a material dividing cone in the extrusion molding process, rotating a sector mold driven by a machine head in cooperation with the extrusion molding, twisting and extruding to form a spiral sector section, and controlling twisting pitch of the sector section by controlling extrusion speed and machine head rotating speed;
When the multi-sector sheath is prepared, a plurality of groups of optical fiber belts and water-blocking yarns are pulled and vertically put into each sector mold, a plurality of groups of optical fiber belts are layered and stacked and then synchronously penetrate into the sector molds, and the water-blocking yarns are filled in gaps between the optical fiber belts and the sector molds.
In one embodiment of the present invention, the process for preparing an optical fiber ribbon includes: carrying out coloring process treatment on a plurality of scattered optical fibers; the colored scattered optical fibers are sent into a ribbon-doubling machine side by side according to a certain sequence, and the scattered optical fibers are bonded and spliced into a ribbon-shaped structure through ribbon-doubling resin; and detecting the spliced optical fiber ribbon.
In one embodiment of the present invention, after cabling, it is also necessary to perform temperature resistance testing, flame retardant testing, water permeability testing, and repeated bending testing on the fiber optic cable.
Compared with the prior art, the technical scheme of the invention has the following advantages:
According to the flexible skeleton type optical fiber ribbon optical cable, the integrally formed multi-sector sheath is arranged to serve as the skeleton structure and the sheath structure of the optical cable, so that the traditional skeleton structure and the multi-layer cladding structure are abandoned, the proportion of an optical fiber ribbon in the skeleton structure is improved, the flexible skeleton type optical fiber ribbon optical cable is suitable for preparing a large-core skeleton optical cable, and the integrally formed multi-sector sheath is simple in structure and light in weight, the manufacturing cycle and the transportation cost are greatly reduced, the number of layers of the optical cable is reduced, water seepage between optical cable layers is prevented, and the water blocking performance is further improved;
According to the preparation method of the flexible skeleton type optical fiber ribbon optical cable, the multi-sector sheath is directly extruded outside the central reinforcing piece, the extrusion molding S-shaped twisting technology is adopted, the multi-sector sheath is prepared by twisting extrusion molding to form a spiral sector section through the arrangement of the runner of the material dividing cone and the rotation of the sector die driven by the machine head in the extrusion molding process, the optical fiber ribbon is penetrated at the same time when the multi-sector sheath is prepared, the preparation process is completed by only one process, and compared with the conventional skeleton type optical fiber ribbon optical cable, the production and manufacturing process is simple, and the manufacturing period and cost are greatly reduced.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which:
FIG. 1 is a schematic diagram of a conventional rack-mounted fiber optic ribbon cable;
FIG. 2 is a schematic structural view of a flexible skeleton-type fiber optic ribbon cable of the present invention;
FIG. 3 is a flow chart of steps of a method of making a flexible skeleton fiber optic ribbon cable of the present invention.
Description of the specification reference numerals: 1. a central reinforcement; 2. a multi-sector sheath; 21. a sleeve layer; 22. a sheath layer; 23. a separation layer; 3. an optical fiber ribbon.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Referring to fig. 2, the flexible skeleton type optical fiber ribbon optical cable of the present invention comprises a central reinforcement 1 and a multi-sector sheath 2 covering the outside of the central reinforcement 1, wherein the multi-sector sheath 2 comprises a sleeve layer 21 and a sheath layer 22 which are sequentially sleeved outside the central reinforcement 1, the sleeve layer 21 is extruded and covered outside the central reinforcement 1, the sleeve layer 21 is attached to the central reinforcement 1, the sheath layer 22 is concentrically arranged with the sleeve layer 21, an annular space is formed between the sleeve layer 21 and the sheath layer 22, a plurality of separation layers 23 respectively connecting the sleeve layer 21 and the sheath layer 22 are arranged between the sleeve layer 21 and the sheath layer 22, the sleeve layer 21, the separation layers 23 and the sheath layer 22 are integrally formed, the annular space between the sleeve layer 21 and the sheath layer 22 is divided into a plurality of sector sections by the separation layers 23, and the optical fiber ribbon 3 is filled in the sector sections;
The multi-sector sheath 2 is used as a skeleton structure and a sheath structure of an optical cable, a traditional skeleton structure and a multi-layer cladding structure are abandoned, on one hand, the duty ratio of the optical fiber ribbon 3 in the skeleton structure is improved, the multi-sector sheath is suitable for preparing a large-core skeleton optical cable, the duty ratio of the optical fiber ribbon 3 in each sector interval in the embodiment is controlled between 60% and 75%, in terms of structural size, the optical cable with the same core number is smaller than the traditional skeleton optical fiber ribbon in size, the outer diameter size of the traditional 1200-core skeleton optical cable is about 30mm, the outer diameter size of the 1152-core optical cable of the flexible skeleton optical fiber ribbon optical cable is about 20mm, and the same-ratio optical cable sectional area is reduced by about 33%; on the other hand, the multi-sector sheath 2 formed integrally is simple in structure and light in weight, the manufacturing cycle and the transportation cost are greatly reduced, the number of layers of the optical cable is reduced, water seepage between optical cable layers is prevented, and the water blocking performance is further improved.
Specifically, the plurality of separation layers 23 are circumferentially and uniformly distributed in the annular space, so as to divide the annular space into a plurality of sector sections with equal areas, and according to actual use scenes and use requirements, the annular space is generally divided into 4-8 sector sections, when the annular space is divided into 4 sector sections, the angle occupied by each sector section is 90 degrees, and when the annular space is divided into 8 sector sections, the angle occupied by each sector section is 45 degrees.
Specifically, in order to satisfy the mechanical properties of the optical cable, the optical cable is provided with a certain longitudinal tensile property, so that the optical fiber ribbon 3 arranged in the optical cable should be helically twisted, thus ensuring that the optical fiber ribbon 3 is reserved for a certain length, and under the condition that the optical cable is stretched, the force is not directly applied to the optical fiber ribbon 3, therefore, in order to satisfy the above characteristics, the plurality of separation layers 23 in the embodiment are unidirectionally helically twisted in the annular space, and the formed sector intervals are also spatially helically distributed between the sleeve layer 21 and the sheath layer 22, so that the optical fiber ribbon 3 can be helically twisted and distributed, and a certain residual length can be reserved, thereby improving the mechanical properties of the optical cable.
Specifically, the optical fiber ribbons 3 are stacked in layers in the sector section, the optical fiber ribbons 3 are formed by splicing a plurality of scattered optical fibers side by side with resin to form the optical fiber ribbon 3 with 6-16 cores, in this embodiment, taking an 8 sector structure as an example for each single sector 144 core, the optical fiber ribbon 3 can be formed by 6 cores, 8 cores, 10 cores 12 cores, 16 cores and 6 cores are sequentially stacked.
Specifically, in order to improve the longitudinal water blocking performance of the fan-shaped section, the gaps between the optical fiber ribbons 3 and the separation layer 23 are filled with water blocking yarns, which have a dry water blocking effect.
Specifically, the center reinforcement 1 is a glass fiber rod made of nonmetal materials, the glass fiber rod is made of fluorine-free boron-free high-strength glass fiber yarns, the impact resistance and the fatigue resistance are higher, higher reliability, longer service life, lower cost and excellent high temperature resistance and corrosion resistance are provided for the optical cable, and the bending performance of the optical cable can be improved and the problem that lightning stroke is caused by the fact that the traditional skeleton type optical cable contains the metal reinforcement can be replaced by placing the glass fiber rod in the center of the cable.
Specifically, the multi-sector sheath 2 is made of an extrusion molding type tracking-resistant flame-retardant polyethylene material, the tracking-resistant flame-retardant polyethylene material has excellent environmental stress cracking resistance and electrical insulation property, and has higher heat resistance, impact resistance, puncture resistance and other properties, and certain flame-retardant requirements can be met in an electric power use scene.
In summary, the flexible skeleton type optical fiber ribbon cable in the embodiment adopts the nonmetal reinforcement, the dry type water-blocking yarn and the tracking-resistant flame-retardant polyethylene sheath, is an all-medium, all-dry type, electric corrosion-resistant and flame-retardant optical cable, and is suitable for a high-voltage electric field environment in a power access network system.
Referring to fig. 3, the preparation method of the flexible skeleton type optical fiber ribbon cable comprises the following steps:
Preparing an optical fiber ribbon 3;
Preparing a multi-sector sheath 2 outside the central reinforcing piece 1, adopting an extrusion molding S-shaped twisting technology, setting a runner through a material dividing cone in the extrusion molding process, rotating a sector mold driven by a machine head in cooperation with the runner, twisting and extruding to form a spiral sector section, and controlling twisting pitch of the sector section by controlling extrusion speed and machine head rotating speed;
when the multi-sector sheath 2 is prepared, a plurality of groups of optical fiber bands 3 and water blocking yarns are vertically dragged and put into each sector mold, a plurality of groups of optical fiber bands 3 are synchronously penetrated into the sector molds after being layered and stacked, and the water blocking yarns are filled in gaps between the optical fiber bands 3 and the sector molds;
According to the preparation method of the flexible skeleton type optical fiber ribbon optical cable, the multi-sector sheath 2 is directly extruded outside the central reinforcing piece 1, the extrusion molding S-shaped twisting technology is adopted, the spiral sector section is formed through twisting extrusion molding, the optical fiber ribbon 3 is penetrated and arranged at the same time when the multi-sector sheath 2 is prepared, the preparation process can be completed through only one process, and compared with the conventional skeleton type optical fiber ribbon optical cable, the production and manufacturing process is simple, and the manufacturing period and cost are greatly reduced.
Specifically, the process of preparing the optical fiber ribbon 3 includes: carrying out coloring process treatment on a plurality of scattered optical fibers; the colored scattered optical fibers are sent into a ribbon-merging machine side by side according to a certain sequence, can be arranged according to the sequence of all-fiber chromatography or pilot fiber chromatography according to actual use requirements, and are bonded and spliced into a ribbon-shaped structure through ribbon-merging resin; after the optical fibers are combined, the spliced optical fiber ribbon 3 is detected, and the detection steps of optical performance detection, stripping detection, flatness detection and the like are included, so that the service performance of the optical fibers is not affected.
Specifically, in the preparation process of the multi-sector sheath 2, as the extrusion molding sheath has certain contractility, the vacuum sizing sheath forming technology is adopted, and the duty ratio of each sector section and the outer diameter dimension of the optical cable are more stable through negative pressure pumping and vacuum sizing.
Specifically, after cabling, the optical cable is required to be subjected to temperature resistance test, flame retardant detection, water seepage performance detection and repeated bending detection, and packaging is carried out after the test standard is met, so that the preparation is completed.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. The preparation method of the flexible skeleton type optical fiber ribbon optical cable is characterized in that the flexible skeleton type optical fiber ribbon optical cable comprises a central reinforcing part and a multi-sector sheath wrapped outside the central reinforcing part, the multi-sector sheath comprises a sleeve layer and a sheath layer which are sequentially sleeved outside the central reinforcing part, a plurality of separation layers respectively connected with the sleeve layer and the sheath layer are arranged between the sleeve layer and the sheath layer, the sleeve layer, the separation layers and the sheath layer are integrally formed, an annular space between the sleeve layer and the sheath layer is divided into a plurality of sector sections by the separation layers, the plurality of separation layers are spirally twisted in the annular space, the formed sector sections are also spirally distributed between the sleeve layer and the sheath layer, and an optical fiber ribbon is filled in the sector sections;
the manufacturing method of the flexible skeleton type optical fiber ribbon optical cable comprises the following steps:
Preparing an optical fiber ribbon;
preparing a multi-sector sheath outside the central reinforcing piece, adopting an extrusion molding S-shaped twisting technology, setting a runner through a material dividing cone in the extrusion molding process, rotating a sector mold driven by a machine head in cooperation with the extrusion molding, twisting and extruding to form a spiral sector section, and controlling twisting pitch of the sector section by controlling extrusion speed and machine head rotating speed;
When the multi-sector sheath is prepared, a plurality of groups of optical fiber belts and water-blocking yarns are pulled and vertically put into each sector mold, a plurality of groups of optical fiber belts are layered and stacked and then synchronously penetrate into the sector molds, and the water-blocking yarns are filled in gaps between the optical fiber belts and the sector molds.
2. The method of making a flexible, skeleton-type optical fiber ribbon cable of claim 1, wherein: the plurality of separation layers are circumferentially and uniformly distributed in the annular space to divide the annular space into a plurality of fan-shaped sections with equal areas.
3. The method of making a flexible, skeleton-type optical fiber ribbon cable of claim 1, wherein: the optical fiber ribbons are stacked in the fan-shaped section in a layered mode, and the optical fiber ribbons are formed by splicing a plurality of scattered optical fibers side by adopting ribbon resin.
4. A method of making a flexible, skeleton-type optical fiber ribbon cable as defined in claim 3, wherein: and water-blocking yarns are filled in gaps among the optical fiber bands and between the optical fiber bands and the separation layer.
5. The method of making a flexible, skeleton-type optical fiber ribbon cable of claim 1, wherein: the central reinforcement is a glass fiber rod made of nonmetal materials.
6. The method of making a flexible, skeleton-type optical fiber ribbon cable of claim 1, wherein: the multi-sector sheath is made of an anti-tracking flame-retardant polyethylene material through extrusion molding.
7. The method of making a flexible, skeleton-type optical fiber ribbon cable of claim 1, wherein: the process for preparing the optical fiber ribbon comprises the following steps: carrying out coloring process treatment on a plurality of scattered optical fibers; the colored scattered optical fibers are sent into a ribbon-doubling machine side by side according to a certain sequence, and the scattered optical fibers are bonded and spliced into a ribbon-shaped structure through ribbon-doubling resin; and detecting the spliced optical fiber ribbon.
8. The method of making a flexible, skeleton-type optical fiber ribbon cable of claim 1, wherein: after cabling, the optical cable is required to be subjected to temperature resistance test, flame retardant detection, water permeability detection and repeated bending detection.
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| EP0266941A2 (en) * | 1986-11-04 | 1988-05-11 | Nortel Networks Corporation | Optical cable |
| CN2237856Y (en) * | 1995-04-26 | 1996-10-16 | 北京张镇光纤电缆厂 | Metal reinforced part loose sleeving frame type full-filled optical cable |
| CN2409530Y (en) * | 1999-12-21 | 2000-12-06 | 周建宏 | Lotus root-shaped optical cable |
| CN101673593A (en) * | 2009-10-10 | 2010-03-17 | 龚利芬 | Slotted core ribbon cable |
| CN103093887A (en) * | 2013-01-28 | 2013-05-08 | 蒋菊生 | Cross-shaped framework and cables with cross-shaped framework adopted |
| CN105513694A (en) * | 2013-01-28 | 2016-04-20 | 吴红平 | Convenient-to-construct cable |
| CN105655035A (en) * | 2013-01-28 | 2016-06-08 | 朱保生 | Convenient-to-construct and easy-to-make cable |
| CN214311012U (en) * | 2020-10-26 | 2021-09-28 | 富通特种光缆(天津)有限公司 | Large core number skeleton type optical cable and manufacturing device |
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| CN113866921A (en) | 2021-12-31 |
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