CN219590569U

CN219590569U - Optical fiber ribbon cable

Info

Publication number: CN219590569U
Application number: CN202320520819.5U
Authority: CN
Inventors: 庄经荣; 李钊; 陈列; 卢传远; 陈慧雄; 杨向荣
Original assignee: Shantou High Tech Zone Aoxing Optical Communication Equipment Co ltd; Yangtze Optical Fibre and Cable Co Ltd
Current assignee: Shantou High Tech Zone Aoxing Optical Communication Equipment Co ltd; Yangtze Optical Fibre and Cable Co Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-08-25
Anticipated expiration: 2033-03-16

Abstract

The utility model belongs to the field of optical cables, and discloses an optical fiber ribbon optical cable which comprises a cable core (1), a first optical fiber ribbon (2) and a protective layer; the method is characterized in that: the cable core comprises six special-shaped loose tubes (T1) with parallelogram cross sections, a middle first tube cavity (T0) is arranged in each of the special-shaped loose tubes (T1), the long side/short side of each of the special-shaped loose tubes (T1) is respectively (L1) and (W1), the smaller vertex angle (beta 1) is sixty degrees, the length of each of the special-shaped loose tubes (L1) is 2 times of the length of each of the special-shaped loose tubes (W1), and six special-shaped loose tubes (T1) are spliced to form the cable core with the regular hexagon cross section; at least one first ribbon constitutes a ribbon; the optical fiber ribbon body is positioned in the T0, and at least one protective layer is coated outside the cable core (1) to fix the position and the shape of the cable core (1). The utility model has the following main beneficial technical effects: the manufacturing is convenient, the assembly and disassembly and the construction and maintenance are easy, the requirements on production equipment, sites and the like are lower, the material consumption is less, the cost is lower, and the core density of the optical fiber and the optical fiber ribbon is higher.

Description

Optical fiber ribbon cable

Technical Field

The utility model belongs to the field of optical cables, and particularly relates to an optical fiber ribbon cable.

Background

In the prior art, the structure of a layer stranded optical cable is specified; the layer-stranded optical cable adopts a mode that a plurality of loose tubes are stranded around a central reinforcing piece, and the adjacent tubes, the tubes and the periphery have larger space waste, so that the space utilization rate needs to be improved; particularly, after the rectangular optical fiber ribbon is put into the loose tube with the cylindrical inner cavity, the space inside the loose tube is also wasted greatly.

In the prior art, a structure of a layer stranded type optical fiber ribbon cable is provided, wherein a rectangular optical fiber ribbon is arranged in a loose tube, and a structure of a central beam tube type optical fiber ribbon cable is also provided, wherein the central beam tube is also of a circular structure, a circular cavity is arranged in the central beam tube, and a rectangular optical fiber ribbon is also arranged in the circular cavity; these structures also do not use up the space inside the ferrule, and therefore the core density is still to be increased, and for this reason, a great deal of research has been conducted in the industry, and the main literature is as follows.

CN108806875a discloses a communication power composite cable for robot trade, including the composite cable crust, two first through-holes that are used for holding power cable core and communication optical cable respectively have been seted up to the inside of composite cable crust, first through-hole inner wall all is equipped with the layer of aluminizing, the communication optical cable comprises a plurality of optic fibre, the cross-section of a plurality of optic fibre constitutes the quadrangle, the power cable core comprises a plurality of copper cables, power cable core spacer sleeve is equipped with a plurality of EMC and absorbs the magnetic ring, still be equipped with the second through-hole that is used for holding the steel cable between two first through-holes of composite cable crust, the second through-hole is right circular through-hole, and the outside cover of second through-hole is equipped with the rectangle and prevents rolling over the frame, aluminizes layer thickness and is 0.5 ~ 0.8mm. According to the communication power composite cable for the robot industry, the plurality of cooling pipes which are sequentially arranged are clamped at the centers of the plurality of copper cables at intervals, so that the fire potential hazards are reduced. The cross section of the plurality of optical fibers is quadrilateral, and the technical teaching of reasonably utilizing space and saving space resources does not exist.

CN218037476U discloses a communication optical cable for power dispatching network, which comprises a communication unit, wherein the communication unit is composed of a protection component and a protection sleeve, the cross section of the outer edge of the protection component is regular hexagon, and the cross section of the outer edge of the protection sleeve is circular; the protection device is characterized in that the protection device is composed of six embedded parts, each embedded part is composed of an outer wall body, a first inclined wall body, a second inclined wall body, a third inclined wall body, a fourth inclined wall body, six first communication parts and six second communication parts, and the first communication parts and the second communication parts are all positioned in the protection device. The optical fiber ribbon is disclosed to have a parallelogram cross section, but the optical fiber ribbon has a first communication component and a second communication component, and the space utilization rate is improved because the second communication component cannot realize the parallelogram cross section.

Accordingly, the prior art has mainly the following drawbacks: (1) The layer twisting structure makes the sleeve SZ twisted and twisted, and the optical fiber band in the sleeve twisted, so that the transmission performance and the mechanism performance of the optical fiber are deteriorated; (2) The round or parallelogram component has the advantages that the internal space is not used enough, so that waste is caused, and meanwhile, the material consumption of the optical cable is increased intangibly, the cost is high, a large amount of space is occupied, and the transportation cost is high; (3) the core density of the optical fibers within the cable is low; (4) In order to realize a plurality of communication components, such as a plurality of loose tubes, SZ machine equipment with more twisting heads is required, so that not only is the investment high, but also the space occupation is large, for example, the general SZ twisting heads are 12 twisting heads and 12 pay-off frames, in order to enable the same cable to have more loose tubes, two methods are generally used, and one of the two methods is as follows: purchasing more pay-off frames, upgrading the twisting heads and controlling the parts of the equipment; and two is: twisting is performed a plurality of times, such as twice, but in order to make the structure stable and reliable, i.e. tangent to the greatest extent, the number of inner layers is usually smaller than that of outer layers, and the outer diameters of the loose tubes of the inner layer and the outer layer are different, such as an inner layer 6 unit and an outer layer 12 unit; after the inner layer 9 unit, the outer layer 15 unit and the like are twisted, the outer layer presses the inner layer more, in order to prevent loose tubes in the same layer from scattering, a binder is needed to bind the loose tubes, the loose tubes are damaged by the binder, and the loose tubes are damaged or loose due to the fact that the thermal expansion and contraction properties of the binder are different from those of the loose tubes, when the loose tubes are damaged, optical fibers or optical fiber belts are damaged, communication signals are interrupted or strength is reduced due to the fact that the loose tubes are damaged, and troubles are brought to maintenance; moreover, with more cannulas, resolution is cumbersome.

The group company of the inventor is allocated to the research and development tasks of each subsidiary, the research and development task of the project is responsible for the unit, and part of the project is intersected with the part of the Shenyang company, but the research and development are respectively carried out from different scheme angles, and the unit is biased towards the direction of higher fiber core density and higher fiber core density.

Disclosure of Invention

In order to solve the above problems, the present utility model aims to disclose an optical fiber ribbon cable, which is realized by adopting the following technical scheme.

An optical fiber ribbon cable comprises a cable core, a plurality of first optical fiber ribbons and at least one protective layer positioned outside the cable core; the method is characterized in that: the cable core comprises six first special-shaped loose tubes, the first special-shaped loose tubes are formed by first special-shaped loose tube bodies, the cross sections of the first special-shaped loose tubes are parallelograms, first hollow sleeve cavities extending along the axial direction are formed in the first special-shaped loose tubes, the smaller vertex angles of the first special-shaped loose tubes are sixty degrees, the values of the long sides of the first special-shaped loose tubes are 2 times of the values of the short sides of the first special-shaped loose tubes, the six first special-shaped loose tubes are divided into three groups by two, the long sides of each group of first special-shaped loose tubes are attached to each other and spliced to form a combined sleeve body with a rhombic cross section, and the three combined sleeve bodies are spliced to form the cable core with a regular hexagonal cross section; the first optical fiber ribbon consists of a plurality of optical fibers and a bonding layer which integrally covers the optical fibers, the cross section of the first optical fiber ribbon is parallelogram, and the smaller vertex angle of the first optical fiber ribbon is sixty degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons, the first optical fiber ribbons are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is sixty degrees; the optical fiber ribbon body is positioned in the first sleeve cavity, and at least one protective layer is coated outside the cable core to fix the position and the shape of the cable core.

An optical fiber ribbon cable comprises a cable core, a plurality of first optical fiber ribbons and at least one protective layer positioned outside the cable core; the method is characterized in that: the cable core comprises twelve first special-shaped loose tubes, the first special-shaped loose tubes are formed by first special-shaped loose tube bodies, the cross sections of the first special-shaped loose tubes are parallelograms, first hollow sleeve cavities extending along the axial direction are formed in the first special-shaped loose tubes, the smaller vertex angles of the first special-shaped loose tubes are sixty degrees, the values of the long sides of the first special-shaped loose tubes are equal to those of the short sides of the first special-shaped loose tubes, the twelve first special-shaped loose tubes are divided into three groups by four, the first special-shaped loose tubes of each group are attached to each other and spliced to form a combined sleeve body with a rhombic cross section, and the three combined sleeve bodies are spliced to form the cable core with the regular hexagonal cross section; the first optical fiber ribbon consists of a plurality of optical fibers and a bonding layer which integrally covers the optical fibers, the cross section of the first optical fiber ribbon is parallelogram, and the smaller vertex angle of the optical fiber ribbon is sixty degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons, the first optical fiber ribbons are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is sixty degrees; the optical fiber ribbon body is positioned in the first sleeve cavity, and at least one protective layer is coated outside the cable core to fix the position and the shape of the cable core.

An optical fiber ribbon cable comprises a cable core, a plurality of first optical fiber ribbons, a plurality of second optical fiber ribbons and at least one protective layer positioned outside the cable core; the method is characterized in that: the cable core comprises four first special-shaped loose tubes and two second special-shaped loose tubes, the first special-shaped loose tubes are formed by a first special-shaped loose tube body, the cross section of each first special-shaped loose tube is parallelogram, a first hollow tube cavity extending along the axial direction is formed in each first special-shaped loose tube, the smaller vertex angle of each first special-shaped loose tube is forty-five degrees, and the numerical value of the long side of each first special-shaped loose tube is equal to the numerical value of the short side of each first special-shaped loose tube; the second special-shaped loose tube is composed of a second special-shaped loose tube body, the cross section of the second special-shaped loose tube is parallelogram, a second hollow tube cavity extending along the axial direction is arranged in the second special-shaped loose tube, the smaller vertex angle of the second special-shaped loose tube is ninety degrees, and the value of the long side of the second special-shaped loose tube is equal to the value of the short side of the second special-shaped loose tube; the value of the long side of the first special-shaped loose tube is equal to that of the long side of the second special-shaped loose tube; the four first special-shaped loose tubes and the two second special-shaped loose tubes are spliced to form a cable core with a regular octagonal cross section; the first optical fiber ribbon consists of a plurality of optical fibers and a bonding layer which integrally covers the optical fibers, the cross section of the first optical fiber ribbon is parallelogram, and the smaller vertex angle of the first optical fiber ribbon is forty-five degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons, the first optical fiber ribbons are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is forty-five degrees; the optical fiber ribbon body is positioned in the first sleeve cavity; the second optical fiber ribbon consists of a plurality of optical fibers and a bonding protection layer which integrally covers the optical fibers, the cross section of the second optical fiber ribbon is parallelogram, and the smaller vertex angle of the second optical fiber ribbon is ninety degrees; the optical fiber ribbon stack body is composed of at least one second optical fiber ribbon, when the optical fiber ribbon stack body is provided with a plurality of second optical fiber ribbons, the second optical fiber ribbons are distributed in a stacking mode, long sides of the optical fiber ribbon stack body are stacked, and the cross section of the optical fiber ribbon stack body is rectangular; the optical fiber ribbon stack is positioned in the second sleeve cavity; at least one protective layer is coated outside the cable core and fixes the position and shape of the cable core.

An optical fiber ribbon cable comprises a cable core, a plurality of first optical fiber ribbons, a plurality of second optical fiber ribbons and at least one protective layer positioned outside the cable core; the method is characterized in that: the cable core comprises five first special-shaped loose tubes and five second special-shaped loose tubes, the first special-shaped loose tubes are formed by first special-shaped loose tube bodies, the cross sections of the first special-shaped loose tubes are parallelograms, first hollow sleeve cavities extending along the axial direction are formed in the first special-shaped loose tubes, the smaller vertex angles of the first special-shaped loose tubes are thirty-six degrees, and the numerical value of the long edges of the first special-shaped loose tubes is equal to the numerical value of the short edges of the first special-shaped loose tubes; the second special-shaped loose tube is composed of a second special-shaped loose tube body, the cross section of the second special-shaped loose tube is parallelogram, a second hollow tube cavity extending along the axial direction is arranged in the second special-shaped loose tube, the smaller vertex angle of the second special-shaped loose tube is seventy-two degrees, and the value of the long side of the second special-shaped loose tube is equal to the value of the short side of the second special-shaped loose tube; the value of the long side of the first special-shaped loose tube is equal to that of the long side of the second special-shaped loose tube; five first special-shaped loose tubes and five second special-shaped loose tubes are spliced to form a cable core with a regular decagon cross section; the first optical fiber ribbon consists of a plurality of optical fibers and a bonding layer which integrally covers the optical fibers, the cross section of the first optical fiber ribbon is parallelogram, and the smaller vertex angle of the first optical fiber ribbon is thirty-six degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons, the first optical fiber ribbons are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is thirty-six degrees; the optical fiber ribbon body is positioned in the first sleeve cavity; the second optical fiber ribbon consists of a plurality of optical fibers and a bonding protection layer which integrally covers the optical fibers, the cross section of the second optical fiber ribbon is in a parallelogram shape, and the smaller vertex angle of the second optical fiber ribbon is seventy-two degrees; the optical fiber ribbon stack body is composed of at least one second optical fiber ribbon, when the optical fiber ribbon stack body is provided with a plurality of second optical fiber ribbons, the second optical fiber ribbons are distributed in a stacking mode, long sides of the optical fiber ribbon stack body are stacked, the cross section of the optical fiber ribbon stack body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon stack body is seventy-two degrees; the optical fiber ribbon stack is positioned in the second sleeve cavity; at least one protective layer is coated outside the cable core and fixes the position and shape of the cable core.

An optical fiber ribbon cable comprises a cable core, a plurality of first optical fiber ribbons, a plurality of second optical fiber ribbons and at least one protective layer positioned outside the cable core; the method is characterized in that: the cable core comprises ten first special-shaped loose tubes and ten second special-shaped loose tubes, wherein the first special-shaped loose tubes are formed by a first special-shaped loose tube body, the cross section of each first special-shaped loose tube is parallelogram, a first hollow tube cavity extending along the axial direction is formed in each first special-shaped loose tube, the smaller vertex angle of each first special-shaped loose tube is thirty-six degrees, and the numerical value of the long side of each first special-shaped loose tube is twice the numerical value of the short side of each first special-shaped loose tube; the second special-shaped loose tube is composed of a second special-shaped loose tube body, the cross section of the second special-shaped loose tube is parallelogram, a second hollow tube cavity extending along the axial direction is arranged in the second special-shaped loose tube, the smaller vertex angle of the second special-shaped loose tube is seventy-two degrees, and the value of the long side of the second special-shaped loose tube is twice the value of the short side of the second special-shaped loose tube; the value of the long side of the first special-shaped loose tube is equal to that of the long side of the second special-shaped loose tube; ten first special-shaped loose tubes and ten second special-shaped loose tubes are spliced to form a cable core with a regular decagonal cross section; the first optical fiber ribbon consists of a plurality of optical fibers and a bonding layer which integrally covers the optical fibers, the cross section of the first optical fiber ribbon is parallelogram, and the smaller vertex angle of the first optical fiber ribbon is thirty-six degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons, the first optical fiber ribbons are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is thirty-six degrees; the optical fiber ribbon body is positioned in the first sleeve cavity; the second optical fiber ribbon consists of a plurality of optical fibers and a bonding protection layer which integrally covers the optical fibers, the cross section of the second optical fiber ribbon is in a parallelogram shape, and the smaller vertex angle of the second optical fiber ribbon is seventy-two degrees; the optical fiber ribbon stack body is composed of at least one second optical fiber ribbon, when the optical fiber ribbon stack body is provided with a plurality of second optical fiber ribbons, the second optical fiber ribbons are distributed in a stacking mode, long sides of the optical fiber ribbon stack body are stacked, the cross section of the optical fiber ribbon stack body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon stack body is seventy-two degrees; the optical fiber ribbon stack is positioned in the second sleeve cavity; at least one protective layer is coated outside the cable core and fixes the position and shape of the cable core.

The utility model has the following main beneficial technical effects: the manufacturing is convenient, the assembly and disassembly and the construction and maintenance are easy, the requirements on production equipment, sites and the like are lower, the material consumption is less, the cost is lower, and the core density of the optical fiber and the optical fiber ribbon is higher.

Drawings

Fig. 1 is a schematic cross-sectional structure of a cable core according to embodiment 1 of the utility model.

Fig. 2 is a schematic cross-sectional structure of the enlarged first special-shaped loose tube of fig. 1.

Fig. 3 is a schematic cross-sectional structure of an optical fiber ribbon used in embodiment example 1.

FIG. 4 is a schematic cross-sectional view of the ribbon formed by stacking two ribbon layers of FIG. 3.

FIG. 5 is a schematic cross-sectional view of the ribbon formed by stacking the three ribbon layers of FIG. 3.

Fig. 6 is a schematic cross-sectional structure of a cable core according to embodiment 2 of the utility model.

Fig. 7 is a schematic cross-sectional structure of a cable core of embodiment 3 of the utility model.

Fig. 8 is a schematic cross-sectional view of the enlarged first shaped loose tube of fig. 7.

Fig. 9 is a schematic cross-sectional view of the enlarged second shaped loose tube of fig. 7.

Fig. 10 is a schematic cross-sectional structure of a cable core of embodiment 4 of the present utility model.

Fig. 11 is a schematic cross-sectional view of the enlarged first special-shaped loose tube of fig. 10.

Fig. 12 is a schematic cross-sectional view of the enlarged second shaped loose tube of fig. 10.

Fig. 13 is a schematic cross-sectional structure of a cable core of embodiment 5 of the present utility model.

Fig. 14 is a schematic cross-sectional structure of a cable core of embodiment example 6 of the present utility model.

In the figure: 1-cable core, 2-first optical fiber ribbon, T1-first special-shaped loose tube, T2-second special-shaped loose tube, T0-first sleeve cavity, T20-second sleeve cavity, L1-long side of first special-shaped loose tube, W1-short side of first special-shaped loose tube, beta 1-smaller apex angle of first special-shaped loose tube, 21-optical fiber, 22-bonding layer, L2-long side of second special-shaped loose tube, W2-short side of second special-shaped loose tube, beta 2-smaller apex angle of second special-shaped loose tube.

Detailed Description

Example 1

Referring to fig. 1 to 5, an optical fiber ribbon cable includes a cable core 1, a plurality of first optical fiber ribbons 2, and at least one protective layer outside the cable core 1; the method is characterized in that: the cable core 1 comprises six first special-shaped loose tubes T1, wherein the first special-shaped loose tubes T1 are formed by first special-shaped loose tube bodies, the cross section of each first special-shaped loose tube T1 is parallelogram, a first hollow sleeve cavity T0 extending along the axial direction is formed in each first special-shaped loose tube T1, the long side of each first special-shaped loose tube is L1, the short side of each first special-shaped loose tube is W1, the smaller vertex angle of each first special-shaped loose tube is beta 1, beta 1 is sixty degrees, the value of L1 is 2 times the value of W1, the six first special-shaped loose tubes T1 are divided into three groups by two, the long sides of each group of first special-shaped loose tubes T1 are attached and spliced to form a combined sleeve body with a rhombic cross section, and the three combined sleeve bodies are spliced to form the cable core 1 with a regular hexagonal cross section; the first optical fiber ribbon 2 is composed of a plurality of optical fibers 21 and an adhesive layer 22 which integrally covers the optical fibers 21, the cross section of the first optical fiber ribbon 2 is parallelogram, and the smaller vertex angle of the first optical fiber ribbon 2 is sixty degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon 2, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons 2, the first optical fiber ribbons 2 are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is sixty degrees; the optical fiber ribbon body is positioned in the first sleeve cavity T0, and at least one protective layer is coated outside the cable core 1 to fix the position and the shape of the cable core 1.

In fig. 3, a single first optical fiber ribbon 2, also referred to as a ribbon body, has only one first optical fiber ribbon 2; six optical fibers in the first optical fiber ribbon are shown, and the number of the optical fibers is not limited to six, and the number of the optical fibers can be other multiple optical fibers, but is generally 2-24.

Fig. 4 shows a fiber optic ribbon body formed by stacking two first fiber optic ribbons 2.

Fig. 5 shows a fiber optic ribbon body formed by stacking three first fiber optic ribbons 2.

In the present utility model, the first optical fiber ribbon 2 having more pieces in the ribbon body may be used, not limited to the case of fig. 4 and 5.

Example 2 of the embodiment

Please refer to fig. 6 with reference to fig. 1 to 5, an optical fiber ribbon cable includes a cable core 1, a plurality of first optical fiber ribbons 2, and at least one protective layer outside the cable core 1; the method is characterized in that: the cable core 1 comprises twelve first special-shaped loose tubes T1, the first special-shaped loose tubes T1 are formed by first special-shaped loose tube bodies, the cross section of each first special-shaped loose tube T1 is parallelogram, a first hollow sleeve cavity T0 extending along the axial direction is formed in each first special-shaped loose tube T1, the long side of each first special-shaped loose tube is L1, the short side of each first special-shaped loose tube is W1, the smaller vertex angle of each first special-shaped loose tube is beta 1, beta 1 is sixty degrees, the value of L1 is equal to the value of W1, the twelve first special-shaped loose tubes T1 are divided into three groups by four groups, each group of first special-shaped loose tubes T1 are attached and spliced to form a combined sleeve body with a rhombic cross section, and the three combined sleeve bodies are spliced to form the cable core 1 with a regular cross section; the first optical fiber ribbon 2 is composed of a plurality of optical fibers 21 and a bonding layer 22 which integrally covers the optical fibers 21, the cross section of the first optical fiber ribbon 2 is parallelogram, and the smaller vertex angle of the optical fiber ribbon 2 is sixty degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon 2, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons 2, the first optical fiber ribbons 2 are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is sixty degrees; the optical fiber ribbon body is positioned in the first sleeve cavity T0, and at least one protective layer is coated outside the cable core 1 to fix the position and the shape of the cable core 1.

Example 3

Referring to fig. 7 to 9, and referring to fig. 1 to 6, an optical fiber ribbon cable includes a cable core 1, a plurality of first optical fiber ribbons 2, a plurality of second optical fiber ribbons, and at least one protective layer outside the cable core 1; the method is characterized in that: the cable core 1 comprises four first special-shaped loose tubes T1 and two second special-shaped loose tubes T2, wherein the first special-shaped loose tubes T1 are formed by a first special-shaped loose tube body, the cross section of each first special-shaped loose tube T1 is parallelogram, a first hollow tube cavity T0 extending along the axial direction is formed in each first special-shaped loose tube T1, the long side of each first special-shaped loose tube is L1, the short side of each first special-shaped loose tube is W1, the smaller vertex angle of each first special-shaped loose tube is beta 1, beta 1 is forty-five degrees, and the value of L1 is equal to that of W1; the second special-shaped loose tube T2 is formed by a second special-shaped loose tube body, the cross section of the second special-shaped loose tube T2 is parallelogram, a second tube cavity T20 which is hollow and extends along the axial direction is arranged in the second special-shaped loose tube T2, the long side of the second special-shaped loose tube is L2, the short side of the second special-shaped loose tube is W2, the smaller vertex angle of the second special-shaped loose tube is beta 2, beta 2 is ninety degrees, and the value of L2 is equal to the value of W2; the value of L1 is equal to the value of L2; the four first special-shaped loose tubes T1 and the two second special-shaped loose tubes T2 are spliced to form a cable core 1 with a regular octagonal cross section; the first optical fiber ribbon 2 is composed of a plurality of optical fibers 21 and an adhesive layer 22 which integrally covers the optical fibers 21, the cross section of the first optical fiber ribbon 2 is parallelogram, and the smaller vertex angle of the first optical fiber ribbon 2 is forty-five degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon 2, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons 2, the first optical fiber ribbons 2 are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is forty-five degrees; the optical fiber ribbon body is positioned in the first sleeve cavity T0; the second optical fiber ribbon consists of a plurality of optical fibers and a bonding protection layer which integrally covers the optical fibers, the cross section of the second optical fiber ribbon is parallelogram, and the smaller vertex angle of the second optical fiber ribbon is ninety degrees; the optical fiber ribbon stack body is composed of at least one second optical fiber ribbon, when the optical fiber ribbon stack body is provided with a plurality of second optical fiber ribbons, the second optical fiber ribbons are distributed in a stacking mode, long sides of the optical fiber ribbon stack body are stacked, and the cross section of the optical fiber ribbon stack body is rectangular; the optical fiber ribbon stack is positioned in the second sleeve cavity T20; at least one protective layer is coated outside the cable core 1 and fixes the position and shape of the cable core 1.

Example 4

Referring to fig. 10 to 12, and referring to fig. 1 to 9, an optical fiber ribbon cable includes a cable core 1, a plurality of first optical fiber ribbons 2, a plurality of second optical fiber ribbons, and at least one protective layer outside the cable core 1; the method is characterized in that: the cable core 1 comprises five first special-shaped loose tubes T1 and five second special-shaped loose tubes T2, wherein the first special-shaped loose tubes T1 are formed by a first special-shaped loose tube body, the cross section of each first special-shaped loose tube T1 is parallelogram, a first hollow tube cavity T0 extending along the axial direction is formed in each first special-shaped loose tube T1, the long side of each first special-shaped loose tube is L1, the short side of each first special-shaped loose tube is W1, the smaller vertex angle of each first special-shaped loose tube is beta 1, beta 1 is thirty-six degrees, and the value of L1 is equal to that of W1; the second special-shaped loose tube T2 is formed by a second special-shaped loose tube body, the cross section of the second special-shaped loose tube T2 is in a parallelogram shape, a second tube cavity T20 which is hollow and extends along the axial direction is arranged in the second special-shaped loose tube T2, the long side of the second special-shaped loose tube is L2, the short side of the second special-shaped loose tube is W2, the smaller vertex angle of the second special-shaped loose tube is beta 2, beta 2 is seventy-two degrees, and the value of L2 is equal to the value of W2; the value of L1 is equal to the value of L2; the five first special-shaped loose tubes T1 and the five second special-shaped loose tubes T2 are spliced to form a cable core 1 with a regular decagonal cross section; the first optical fiber ribbon 2 is composed of a plurality of optical fibers 21 and an adhesive layer 22 which integrally covers the optical fibers 21, the cross section of the first optical fiber ribbon 2 is parallelogram, and the smaller vertex angle of the first optical fiber ribbon 2 is thirty-six degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon 2, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons 2, the first optical fiber ribbons 2 are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is thirty-six degrees; the optical fiber ribbon body is positioned in the first sleeve cavity T0; the second optical fiber ribbon consists of a plurality of optical fibers and a bonding protection layer which integrally covers the optical fibers, the cross section of the second optical fiber ribbon is in a parallelogram shape, and the smaller vertex angle of the second optical fiber ribbon is seventy-two degrees; the optical fiber ribbon stack body is composed of at least one second optical fiber ribbon, when the optical fiber ribbon stack body is provided with a plurality of second optical fiber ribbons, the second optical fiber ribbons are distributed in a stacking mode, long sides of the optical fiber ribbon stack body are stacked, the cross section of the optical fiber ribbon stack body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon stack body is seventy-two degrees; the optical fiber ribbon stack is positioned in the second sleeve cavity T20; at least one protective layer is coated outside the cable core 1 and fixes the position and shape of the cable core 1.

Example 5

Please refer to fig. 13, and refer to fig. 1 to 12, an optical fiber ribbon cable comprising a cable core 1, a plurality of first optical fiber ribbons 2, a plurality of second optical fiber ribbons, and at least one protective layer outside the cable core 1; the method is characterized in that: the cable core 1 comprises ten first special-shaped loose tubes T1 and ten second special-shaped loose tubes T2, wherein the first special-shaped loose tubes T1 are formed by a first special-shaped loose tube body, the cross section of each first special-shaped loose tube T1 is parallelogram, a first hollow tube cavity T0 extending along the axial direction is formed in each first special-shaped loose tube T1, the long side of each first special-shaped loose tube is L1, the short side of each first special-shaped loose tube is W1, the smaller vertex angle of each first special-shaped loose tube is beta 1, beta 1 is thirty-six degrees, and the value of L1 is twice the value of W1; the second special-shaped loose tube T2 is formed by a second special-shaped loose tube body, the cross section of the second special-shaped loose tube T2 is in a parallelogram shape, a second tube cavity T20 which is hollow and extends along the axial direction is arranged in the second special-shaped loose tube T2, the long side of the second special-shaped loose tube is L2, the short side of the second special-shaped loose tube is W2, the smaller vertex angle of the second special-shaped loose tube is beta 2, beta 2 is seventy-two degrees, and the value of L2 is twice the value of W2; the value of L1 is equal to the value of L2; ten first special-shaped loose tubes T1 and ten second special-shaped loose tubes T2 are spliced to form a cable core 1 with a regular decagonal cross section; the first optical fiber ribbon 2 is composed of a plurality of optical fibers 21 and an adhesive layer 22 which integrally covers the optical fibers 21, the cross section of the first optical fiber ribbon 2 is parallelogram, and the smaller vertex angle of the first optical fiber ribbon 2 is thirty-six degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon 2, when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons 2, the first optical fiber ribbons 2 are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is thirty-six degrees; the optical fiber ribbon body is positioned in the first sleeve cavity T0; the second optical fiber ribbon consists of a plurality of optical fibers and a bonding protection layer which integrally covers the optical fibers, the cross section of the second optical fiber ribbon is in a parallelogram shape, and the smaller vertex angle of the second optical fiber ribbon is seventy-two degrees; the optical fiber ribbon stack body is composed of at least one second optical fiber ribbon, when the optical fiber ribbon stack body is provided with a plurality of second optical fiber ribbons, the second optical fiber ribbons are distributed in a stacking mode, long sides of the optical fiber ribbon stack body are stacked, the cross section of the optical fiber ribbon stack body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon stack body is seventy-two degrees; the optical fiber ribbon stack is positioned in the second sleeve cavity T20; at least one protective layer is coated outside the cable core 1 and fixes the position and shape of the cable core 1.

Example 6

Please refer to fig. 14, and refer to fig. 1 to 13, a fiber optic ribbon cable, which is basically the same as in embodiment example 5, except that: four first special-shaped loose tubes T1 are arranged in the cable core 1 and are positioned in the inner layer, two second special-shaped loose tubes T2 are arranged in the cable core 1, and the two second special-shaped loose tubes T2 are positioned in the four first special-shaped loose tubes T1; in embodiment 5, two second special-shaped loose tubes T2 and four first special-shaped loose tubes T1 are respectively located at two ends of the inner layer.

In the present utility model, the arrangement of the first special-shaped loose tube T1 and the second special-shaped loose tube T2 in embodiment examples 1 to 6 is not limited to the illustrated case, and it should be within the scope of the present utility model as long as the corresponding cable core cross section outer profiles can be formed, so that the cable core cross section outer profiles of embodiment examples 1 and 2 are regular hexagons, the cable core cross section outer profile of embodiment example 3 is regular octagons, and the cable core cross section outer profiles of embodiment examples 4, 5 and 6 are regular decagons.

In the present utility model, the second optical fiber ribbon having more pieces in the optical fiber ribbon stack may be used, and reference may be made to fig. 3, 4 and 5, without being limited to the case of fig. 4 and 5.

The utility model relates to an optical fiber ribbon cable, which is characterized in that: the first special-shaped loose tube T1 is made of plastic.

The utility model relates to an optical fiber ribbon cable, which is characterized in that: the material of the second special-shaped loose tube T2 is plastic.

The utility model relates to an optical fiber ribbon cable, which is characterized in that: the optical fiber 21 is G.652, G.653, G.654, G.655, G.656, G.657, A1a, A1b, A1c, A1d, or A1e.

The utility model relates to an optical fiber ribbon cable, which is characterized in that: the material of the adhesive layer 22 is plastic, preferably polyacrylic resin or ultraviolet curable resin.

The utility model relates to an optical fiber ribbon cable, which is characterized in that: the optical fiber is G.652 or G.653 or G.654 or G.655 or G.656 or G.657 or A1a or A1b or A1c or A1d or A1e.

The utility model relates to an optical fiber ribbon cable, which is characterized in that: the material of the bonding sheath is plastic, preferably polyacrylic resin or ultraviolet curing resin.

The utility model relates to an optical fiber ribbon cable, which is characterized in that: when the protective layer is a layer, the material is plastic; when the protective layer is two layers, the inner layer is water-blocking or non-woven fabrics or aluminum belts or steel belts or glass fiber belts or aramid yarns or other raw materials for limiting the positions of the special-shaped loose tubes in the cable core, and the outer layer is plastic.

The utility model relates to an optical fiber ribbon cable, which is characterized in that: when the protective layer is a plurality of layers, the protective layer may be a combination of the two layers, but the outermost layer is plastic.

Compared with the rectangular optical fiber ribbon in the prior art, the parallel-sided optical fiber ribbon has the advantages that the length of a single optical fiber ribbon is increased by a part, but the consumption of the adhesive layer of the optical fiber ribbon is not increased, the parallel-sided optical fiber ribbon can be matched with a sleeve cavity, the inner space of the special-shaped loose sleeve and the cable core space are utilized to the greatest extent, and the fiber core density is higher.

In the embodiment 1 of the utility model, six first special-shaped loose tubes can be conveniently separated, and the first special-shaped loose tubes can be made into different colors, thereby being convenient for production, construction and identification; although the embodiment example 2 has twelve first special-shaped loose tubes, the first special-shaped loose tubes are convenient to assemble and disassemble, and the first special-shaped loose tubes can be made into blue, orange, green, brown, gray, white, red, black, yellow, purple, pink and cyan colors, so that the first special-shaped loose tubes can be conveniently distinguished; in the implementation examples 3-6, two special-shaped loose tubes are adopted, and different optical fiber ribbons are placed; compared with the prior art, the sum of the numbers of the two special-shaped loose tubes in the implementation examples 5 and 6 reaches 20, the special-shaped loose tube production method does not need complex SZ twisting equipment, only needs two types of dies, the machine equipment for producing the special-shaped loose tube does not need to be changed, in all the implementation examples, the cable core can be carried out on a sheath extruder, for example, when only one protective layer is arranged, an extrusion die is arranged on the sheath extruder, the special-shaped loose tube passes through a corresponding die hole, and can be molded in one step by extrusion molding without the SZ twisting cable forming equipment, so that the technical problems 1 and 4 are solved; in the utility model, all the space is almost utilized, the waste phenomenon does not exist, the cross section of the cable core is completely used, the waste phenomenon does not exist in the wall body of the special-shaped loose tube, and the internal space is completely used, so the technical problems 3 and 4 are solved; in the utility model, the combination of the special-shaped loose tubes and the plurality of special-shaped loose tubes is adopted to achieve 100% utilization of the space of the cross section of the cable core in the shape of a regular polygon, the inventive concept penetrates through all implementation examples, and the outermost layer of the protective layer can also be in the shape of the regular polygon similar to the edge of the cross section of the cable core, so that compared with the circular protective layer in the prior art, the material is saved, and the protective layer can be relatively stable and cannot roll easily when placed on a plane or a slightly inclined plane. The utility model is not limited to the expression style of the drawings, and can achieve that the cable core is regular polygon only by reasonable combination, and the utility model is also within the protection scope of the utility model.

The above-described embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims

1. An optical fiber ribbon cable comprises a cable core (1), a plurality of first optical fiber ribbons (2) and at least one protective layer positioned outside the cable core (1); the method is characterized in that: the cable core (1) comprises six first special-shaped loose tubes (T1), the first special-shaped loose tubes (T1) are formed by first special-shaped loose tube bodies, the cross section of each first special-shaped loose tube (T1) is parallelogram, a first hollow sleeve cavity (T0) extending along the axial direction is arranged in each first special-shaped loose tube (T1), the smaller vertex angle (beta 1) of each first special-shaped loose tube is sixty degrees, the value of the long side of each first special-shaped loose tube is twice the value of the short side of each first special-shaped loose tube, the six first special-shaped loose tubes (T1) are divided into three groups by two, the long sides of each group of first special-shaped loose tubes (T1) are attached to each other and are spliced to form a combined sleeve body with a rhombus cross section, and the three combined sleeve bodies are spliced to form the cable core (1) with a regular hexagonal cross section; the first optical fiber ribbon (2) is composed of a plurality of optical fibers (21) and a bonding layer (22) which integrally covers the optical fibers (21), the cross section of the first optical fiber ribbon (2) is parallelogram, and the smaller vertex angle of the first optical fiber ribbon (2) is sixty degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon (2), when the plurality of first optical fiber ribbons (2) are arranged, the plurality of first optical fiber ribbons (2) are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is sixty degrees; the optical fiber ribbon body is positioned in the first sleeve cavity (T0), and at least one protective layer is coated outside the cable core (1) to fix the position and the shape of the cable core (1).

2. An optical fiber ribbon cable comprises a cable core (1), a plurality of first optical fiber ribbons (2) and at least one protective layer positioned outside the cable core (1); the method is characterized in that: the cable core (1) comprises twelve first special-shaped loose tubes (T1), the first special-shaped loose tubes (T1) are formed by first special-shaped loose tube bodies, the cross section of each first special-shaped loose tube (T1) is parallelogram, a first hollow tube cavity (T0) extending along the axial direction is formed in the first special-shaped loose tube (T1), the smaller vertex angle (beta 1) of each first special-shaped loose tube is sixty degrees, the value of the long side of each first special-shaped loose tube is equal to the value of the short side of each first special-shaped loose tube, the twelve first special-shaped loose tubes (T1) are divided into three groups by four groups, the combined sleeve bodies with the rhombic cross section are formed by the mutual attachment and the combination of the first special-shaped loose tubes (T1), and the cable core (1) with the regular cross section is formed by the combination of the three combined sleeve bodies; the first optical fiber ribbon (2) is composed of a plurality of optical fibers (21) and a bonding layer (22) which integrally covers the optical fibers (21), the cross section of the first optical fiber ribbon (2) is parallelogram, and the smaller vertex angle of the first optical fiber ribbon (2) is sixty degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon (2), when the plurality of first optical fiber ribbons (2) are arranged, the plurality of first optical fiber ribbons (2) are distributed in a laminated mode, long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is sixty degrees; the optical fiber ribbon body is positioned in the first sleeve cavity (T0), and at least one protective layer is coated outside the cable core (1) to fix the position and the shape of the cable core (1).

3. An optical fiber ribbon cable comprises a cable core (1), a plurality of first optical fiber ribbons (2), a plurality of second optical fiber ribbons and at least one protective layer positioned outside the cable core (1); the method is characterized in that: the cable core (1) comprises four first special-shaped loose tubes (T1) and two second special-shaped loose tubes (T2), the first special-shaped loose tubes (T1) are formed by first special-shaped loose tube bodies, the cross section of each first special-shaped loose tube (T1) is in a parallelogram shape, a first hollow tube cavity (T0) extending along the axial direction is formed in each first special-shaped loose tube (T1), the smaller vertex angle (beta 1) of each first special-shaped loose tube is forty-five degrees, and the numerical value of the long side of each first special-shaped loose tube is equal to the numerical value of the short side of each first special-shaped loose tube; the second special-shaped loose tube (T2) is formed by a second special-shaped loose tube body, the cross section of the second special-shaped loose tube (T2) is in a parallelogram shape, a second hollow tube cavity (T20) extending along the axial direction is arranged in the second special-shaped loose tube (T2), the smaller vertex angle (beta 2) of the second special-shaped loose tube is ninety degrees, and the value of the long side of the second special-shaped loose tube is equal to the value of the short side of the second special-shaped loose tube; the value of the long side of the first special-shaped loose tube is equal to that of the long side of the second special-shaped loose tube; the four first special-shaped loose tubes (T1) and the two second special-shaped loose tubes (T2) are spliced to form a cable core (1) with a regular octagonal cross section; the first optical fiber ribbon (2) is composed of a plurality of optical fibers (21) and a bonding layer (22) which integrally covers the optical fibers (21), the cross section of the first optical fiber ribbon (2) is parallelogram, and the smaller vertex angle of the first optical fiber ribbon (2) is forty-five degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon (2), when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons (2), the first optical fiber ribbons (2) are distributed in a laminated mode, the long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is forty-five degrees; the optical fiber ribbon is positioned in the first sleeve cavity (T0); the second optical fiber ribbon consists of a plurality of optical fibers and a bonding protection layer which integrally covers the optical fibers, the cross section of the second optical fiber ribbon is parallelogram, and the smaller vertex angle of the second optical fiber ribbon is ninety degrees; the optical fiber ribbon stack body is composed of at least one second optical fiber ribbon, when the optical fiber ribbon stack body is provided with a plurality of second optical fiber ribbons, the second optical fiber ribbons are distributed in a stacking mode, long sides of the optical fiber ribbon stack body are stacked, and the cross section of the optical fiber ribbon stack body is rectangular; the optical fiber ribbon stack is positioned in the second sleeve cavity (T20); at least one protective layer is coated outside the cable core (1) and fixes the position and the shape of the cable core (1).

4. An optical fiber ribbon cable comprises a cable core (1), a plurality of first optical fiber ribbons (2), a plurality of second optical fiber ribbons and at least one protective layer positioned outside the cable core (1); the method is characterized in that: the cable core (1) comprises five first special-shaped loose tubes (T1) and five second special-shaped loose tubes (T2), the first special-shaped loose tubes (T1) are formed by first special-shaped loose tube bodies, the cross section of each first special-shaped loose tube (T1) is in a parallelogram shape, a first hollow tube cavity (T0) extending along the axial direction is formed in each first special-shaped loose tube (T1), the smaller vertex angle (beta 1) of each first special-shaped loose tube is thirty-six degrees, and the numerical value of the long side of each first special-shaped loose tube is equal to the numerical value of the short side of each first special-shaped loose tube; the second special-shaped loose tube (T2) is formed by a second special-shaped loose tube body, the cross section of the second special-shaped loose tube (T2) is in a parallelogram shape, a second hollow tube cavity (T20) extending along the axial direction is arranged in the second special-shaped loose tube (T2), the smaller vertex angle (beta 2) of the second special-shaped loose tube is seventy-two degrees, and the numerical value of the long side of the second special-shaped loose tube is equal to the numerical value of the short side of the second special-shaped loose tube; the value of the long side of the first special-shaped loose tube is equal to that of the long side of the second special-shaped loose tube; five first special-shaped loose tubes (T1) and five second special-shaped loose tubes (T2) are spliced to form a cable core (1) with a regular decagonal cross section; the first optical fiber ribbon (2) is composed of a plurality of optical fibers (21) and a bonding layer (22) which integrally covers the optical fibers (21), the cross section of the first optical fiber ribbon (2) is parallelogram, and the smaller vertex angle of the first optical fiber ribbon (2) is thirty-six degrees; the optical fiber ribbon body is composed of at least one first optical fiber ribbon (2), when the optical fiber ribbon body is provided with a plurality of first optical fiber ribbons (2), the first optical fiber ribbons (2) are distributed in a laminated mode, the long sides of the optical fiber ribbon body are overlapped, the cross section of the optical fiber ribbon body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon body is thirty-six degrees; the optical fiber ribbon is positioned in the first sleeve cavity (T0); the second optical fiber ribbon consists of a plurality of optical fibers and a bonding protection layer which integrally covers the optical fibers, the cross section of the second optical fiber ribbon is in a parallelogram shape, and the smaller vertex angle of the second optical fiber ribbon is seventy-two degrees; the optical fiber ribbon stack body is composed of at least one second optical fiber ribbon, when the optical fiber ribbon stack body is provided with a plurality of second optical fiber ribbons, the second optical fiber ribbons are distributed in a stacking mode, long sides of the optical fiber ribbon stack body are stacked, the cross section of the optical fiber ribbon stack body is in a parallelogram shape, and the smaller vertex angle of the optical fiber ribbon stack body is seventy-two degrees; the optical fiber ribbon stack is positioned in the second sleeve cavity (T20); at least one protective layer is coated outside the cable core (1) and fixes the position and the shape of the cable core (1).

5. The ribbon cable of claim 4 wherein: the first special-shaped loose tube (T1) is made of plastic; the material of the adhesive layer (22) is polyacrylic resin or ultraviolet curing resin.

6. The ribbon cable of claim 5 wherein: the second special-shaped loose tube (T2) is made of plastic; the material of the bonding protection layer is plastic.

7. The ribbon cable of claim 6 wherein: when the protective layer is a layer, the material is plastic; when the protective layer is two layers, the inner layer is water-blocking or non-woven fabrics or aluminum belts or steel belts or glass fiber belts or aramid yarns, and the outer layer is plastic.

8. The ribbon cable of claim 7 wherein: the type of the optical fiber (21) is G.652 or G.653 or G.654 or G.655 or G.656 or G.657 or A1a or A1b or A1c or A1d or A1e.