CN104614828B - Anti-bird pecking optical cable and manufacturing method thereof - Google Patents

Abstract

The invention belongs to the technical field of cables, and particularly relates to an anti-bird pecking optical cable which comprises a plurality of loose tubes distributed outside a reinforcing piece, a protective layer positioned outside the loose tubes, an inner protective layer positioned outside the protective layer, and an outer sheath positioned outside the inner protective layer, wherein each loose tube at least comprises an optical fiber, the anti-bird pecking optical cable is characterized in that an anti-pecking layer is arranged between the inner protective layer and the outer sheath, and the anti-pecking layer is composed of the following raw materials: medium density polyethylene or low density polyethylene or high density polyethylene, epoxy resin, superfine steel fiber and glass fiber and silica fiber, EVA hot melt adhesive, antioxidant, aluminum hydroxide, paraffin and carbon black master batch. The invention also discloses a manufacturing method of the composite material. The invention has the following main beneficial effects: the anti-pecking device has the advantages of easy manufacture, good anti-pecking effect, high production speed, high qualification rate of finished products, higher pressure resistance and higher impact resistance.

Description

Anti-bird pecking optical cable and manufacturing method thereof

technical field

The invention belongs to the technical field of cables, and in particular relates to a bird-pecking-proof optical cable and a manufacturing method thereof.

Background technique

In order to adapt to the survival of the environment, most of the birds that grow near the forest area have sharp cockroaches, which can damage cables, communication cable sheaths and insulation layers. In electric cables and communication optical cables, in order to facilitate identification, the insulating layer and loose tubes usually have multiple colors. After the sheath is pecked, the insulating layers and loose tubes of various colors look like colorful insects, and birds often eat them by mistake. Pecking the insulated wire core, optical fiber, or even the copper conductor, causing power/communication failure. Rain and snow enter the cable through the broken sheath, and over time, cause unexplained communication failures. In many forest areas in China, such as Hunan, Yunnan, Zhejiang, Guilin and other places, there have been many faults of cables being pecked by birds, causing immeasurable losses.

To this end, a lot of research has been done in China. The name is: anti-bird pecking 8-shaped photoelectric composite cable, authorized announcement number: CN202041686U patent, consisting of sheath, copper wire cushion, copper wire, loose tube filling compound, optical fiber, loose tube, cable core filling compound , strengthening member cushion, strengthening member, auxiliary strengthening member, moisture barrier layer, the optical fiber is in the loose tube, the loose tube is wrapped around the strengthening member, wrapped with tape, the cable core filling compound is in the tape, and the tape The outer layer is the moisture barrier, which forms the cable core, and the copper wire cushion sheath covered with copper wires. They are sheathed to form an 8-shaped sheath, and the sheath is red. It can effectively protect the cable from being pecked by birds when it is overhead outdoors; the name is: anti-bird pecking indoor and outdoor integrated photoelectric hybrid optical cable, authorized announcement number: CN203165550U patent, which includes flame-retardant sheathing materials, optical fibers, reinforcements, wires, Plastic-coated composite tape, insulating layer and red PE sheath, optical fiber 7 is in the center of flame-retardant sheath material 6, and strength members 5 are on both sides, wire 4 is longitudinally wrapped with plastic-coated composite tape 3 and flame-retardant sheath material 6 After twisting together, 1 use a red PE sheath for outer protection. This product is mainly used in the connection between the mobile base station and the transmission tower, and the connection in the computer room, which can avoid the power failure of the base station caused by local power failure or battery failure; reduce the cost of network construction, avoid secondary wiring, and prevent bird pecking ; The name is: non-metallic bird pecking outdoor overhead optical cable, authorized announcement number: CN202067003U patent, which includes optical fiber, loose tube, fiber paste, central strength member, sheath, loose tube (8) containing optical fiber (6) ) surrounds the central reinforcement (2), the loose tube (8) has a fiber paste (7), the loose tube (8) is wrapped with a tape (5), and the sheath (9) is characterized in that: There is a water-blocking material (4) inside the strap (5), and the sheath (9) is a red polyethylene sheath; the name is: self-supporting anti-bird pecking overhead aluminum core composite optical cable, authorized announcement number: CN202258545U patent, it Includes sheath, aluminum conductors, core filling compound, strength member, optical fiber, loose tube filling compound, loose tube, tape, moisture barrier and steel strand, optical fiber (7) in loose tube (9) Inside, the loose tube (9) has a loose tube filling compound (8), the loose tube (9) and the aluminum wire (3) are twisted around the reinforcement (6) and wrapped with a tape (11), and its characteristic It is that there is a moisture barrier (12) and an 8-shaped red sheath (1) on the outside of the strap (11), and there are steel strands (13) in the small-diameter red sheath; the name is: anti-bird pecking self-supporting butterfly Shaped lead-in optical cable, authorized announcement number: patent of CN202649559U, it includes optical fiber, strengthening member and outer sheath, the strengthening member is on both sides of the optical fiber, and is wrapped into a butterfly shape by the outer sheath together, it is characterized in that: the outer sheath (4) One side is also connected with a red sheath (5) equipped with a steel wire reinforcement (1); the patent name is:, authorized announcement number: CN202523458U, which is characterized in that: loose tubes and copper wires surround the reinforcement, optical fibers and the loose sleeve filling compound are in the loose tube, they are all bandaged, and the outside is a moisture barrier, which is characterized in that: the sheath outside the moisture barrier (11) is a red sheath; the name is: a bird-proof Peck optical cable, authorized announcement number: CN203133348U patent, including the cable core and outer sheath, the cable core has an optical fiber unit composed of optical fiber, fiber paste, and optical fiber sleeve, as well as a central strength member and a filling rope. Between the core and the outer sheath, there are successively a yarn binding layer and a corrugated steel belt layer, and the outer sheath is a red sheath and a yellow sheath symmetrically arranged longitudinally torsion structure. The outer sheath adopts a red sheath and a yellow sheath symmetrically arranged in a longitudinally twisted structure, which looks like a snake wrapped around the optical cable, which makes birds afraid and dare not fly down on the surface of the optical cable to gnaw at the optical cable, making the optical cable not easy to damage and extending the service life Longevity; name: new type of anti-bird pecking color code optical cable, authorized announcement number: CN203133349U patent, including the cable core and outer sheath, the cable core has an optical fiber unit composed of optical fiber, fiber paste, optical fiber sleeve and central reinforcement It is characterized in that a yarn binding layer, an inner sheath and a corrugated steel belt layer are sequentially arranged between the cable core and the outer sheath, and the structure of the outer sheath is a red sheath with several yellow color codes at equal intervals in the longitudinal direction. The name is: Overhead cable with anti-bird pecking function, authorized announcement number: CN203325538U patent, including steel wire (1) as self-supporting wire, eight copper wires (2) covered with polyethylene layer (21) and a red outer sheath body (3); the eight copper wires (2) are twisted in pairs to form four pairs of twisted wire pairs (4) for information communication, and the first twisted pair of the four twisted wire pairs (41), the second twisted pair (42), the third twisted pair (43) and the fourth twisted pair (44) are arranged counterclockwise and twisted to form a conductive cable core (5); a polyester tape ( 6) Wrapped on the outer surface of the conductive cable core (5), an inner sheath layer (7) is extruded on the outer surface of the polyester tape (6); the red outer sheath body (3) includes the first A sub-sheath (31) and a second sub-sheath (32), the first sub-sheath (31) and the second sub-sheath (32) are connected by a rib portion (33), the first A sub-sheath (31) covers the outer surface of the inner sheath layer (7), and the second sub-sheath (32) covers the outer surface of the steel wire (1); the name is: self-supporting Overhead anti-bird pecking photoelectric hybrid optical cable, authorized announcement number: CN203260336U patent, it includes aluminum conductor, red PE polyethylene sheath layer, PBT loose tube, metal reinforcement, steel strand, PE inner sheath, metal composite tape 1. Red PE sheath material, characterized in that: the optical fiber is loosely protected to make a PBT loose tube (3), and the PBT loose tube (3) is filled with filler; after twisting, the PBT loose tube (3) Surrounding the metal reinforcement (4), the outside of the cabled core is a metal composite tape (7) that is longitudinally wrapped and armored. After the metal composite tape (7) is armored, it is equipped with a red PE sheath material (2 ), aluminum conductor (1), steel strand (5), red PE polyethylene sheath (2) of PE inner sheath (6), they are installed side by side in the red PE polyethylene sheath (2); The name is: self-supporting anti-bird pecking integrated overhead cable, authorized announcement number: CN202217541U patent, which includes central reinforcement, feeder, cable inner water-blocking material, wrapping tape, metal wire pair for communication, moisture barrier, Loose tubes containing optical fibers, sheaths, steel strands, loose tubes containing optical fibers (10) or other optical units are twisted around the central strength member (2), outside is the tape (6) and the moisture barrier (8 ), characterized in that: feeder wires (4) and communication metal wire pairs (7) surround The central reinforcement (2) is twisted, the tape (6) has a cable inner water-blocking material (5), the moisture barrier (8) is an 8-shaped red polyethylene sheath (11), and the 8-shaped red polyethylene The small-diameter sleeve of the vinyl sheath (11) is covered with a steel strand (12); the above-mentioned patents, without exception, make the outermost layer of the cable be all or part of red or other colors, used to deter birds, application Some people believe that only the red color of the sheath is a distinguishing technical feature, first of all, it should not be a utility model patent, because it is not the shape and structure protected by the patent law; secondly, red or other colors are not suitable for all forest birds. On the contrary, because the cable will swing or vibrate when there is wind, most birds mistake it for flowers and insects. Therefore, the eye-catching cable is more likely to be attacked by birds, which leads to the cable being pecked And the failure rate is higher; the name is: a bird pecking-proof full-dielectric self-supporting optical cable, authorized announcement number: CN203054288U patent, which includes optical fiber, loose tube, fiber paste, central strength member, inner sheath, Aramid layer, outer sheath, loose tube (3) containing optical fiber (1) around the central strength member (4), fiber paste (2) inside the loose tube (3), loose tube (3) Wrapped with binding yarn (6), between the inner sheath (7) and the loose tube (3), there is a cable core filler (5), which is characterized in that: the aramid fiber layer (8) is evenly distributed on the inner sheath (7) Surrounding, the final outer sheath (9) uses nylon sheath material; the cost of nylon sheath material itself is 15-20 times that of polyethylene sheath material, and the processing speed is extremely slow, and the qualified rate of finished products is only 50% %, and the thickness of one molding process can only be below 0.8mm, and multiple processing is required to meet the requirements of anti-pecking; the name is: Rodent-proof, ant-proof, and bird-pecking communication cables, authorized announcement number: CN201094125Y patent, including cable The core (1), the cable core (1) is composed of several pairs of wire pairs (2) with cable ties (21), and the wire pair (2) is composed of two conductors (22) and an insulating layer (23) outside the conductor (22). ) stranded, it is characterized in that: the outside of the cable core (1) is provided with wrapping tape (3), aluminum tape (4) and high molecular weight high density polyolefin sheath (5) sequentially from inside to outside; name For: anti-bird pecking communication cable, authorized announcement number: CN201017714Y patent, including wire core, polyethylene insulation layer, polyester wrapping layer, aluminum-plastic shielding tape, polyethylene sheath, characterized in that: the outside of the wire core is wrapped in turn There are polyethylene insulation layer, polyester wrapping layer, aluminum-plastic shielding tape, polyethylene sheath, armor layer, and polyethylene outer sheath. In this patent, there is an additional layer of steel strip coated with anti-corrosion materials, and a thicker layer of high molecular polyethylene with a small moisture permeability coefficient is added on the outermost layer, so that the life of the cable is more than doubled; and the electric field strength When it is higher, the shielding performance is nearly double that of the original cable; in the above-mentioned patent, the outer layer uses a high-density or high-molecular polyolefin sheath, which is a conventional material in the prior art, and it has been proved that it is extremely difficult to effectively resist The role of bird infestation. For this reason, users look forward to the emergence of anti-peck cables and anti-peck optical cables with better effects.

Contents of the invention

In order to solve the above problems, one of the purposes of the present invention is to disclose a bird-pecking-proof optical cable; the second purpose of the present invention is a manufacturing method of the bird-pecking-proof fiber optic cable; they are realized by adopting the following technical solutions.

In the implementation example 1 of the present invention, the anti-bird pecking optical cable includes a plurality of loose tubes 2 distributed outside the reinforcement 3, a protective layer 4 outside the loose tube, and an inner sheath outside the protective layer 5. The outer sheath 7 located outside the inner sheath, each loose tube contains at least one optical fiber 1, which is characterized in that there is an anti-pecking layer 6 between the inner sheath and the outer sheath, the anti-pecking The layer is composed of the following raw materials in parts by weight: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; epoxy resin with grade 617 or grade 677: 10-20 parts; Ultrafine steel fibers with a length of 10 to 80 μm and a length/diameter ratio of 5 to 10, glass fibers with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm, and carbon dioxide with a diameter of 6.5 to 260 μm and a length of 0.03 to 0.3 mm Silicon optical fiber: 40-60 parts; EVA hot-melt adhesive: 5-10 parts; antioxidant for 1010 cable sheath: 3-5 parts; aluminum hydroxide: 15-25 parts; paraffin wax: 3-9 parts ; carbon black masterbatch: 5-10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber, and silica optical fiber is (1-2): (1-2): (4-8), so The silica optical fiber is composed of a communication optical fiber body that only contains a core or contains a core and a cladding or contains a core, a cladding and a coating or contains a core, a cladding, a coating and a colored layer, The communication optical fiber body is composed of at least one of G.652, G.653, G.654, G.655, G.656, G.657 single-mode optical fiber and multi-mode optical fiber.

In the implementation example 2 of the present invention, the anti-bird pecking optical cable, it comprises at least one loose tube 2 and at least one large filling rope 21 distributed outside the reinforcement 3, and is located outside the loose tube and the large filling rope. Protective layer 4, an inner sheath 5 outside the protective layer, an outer sheath 7 outside the inner sheath, each loose tube contains at least one optical fiber 1, and is characterized in that the inner sheath and the outer sheath There is an anti-pecking layer 6 between them.

In embodiment 3 of the present invention, the anti-bird pecking optical cable comprises a plurality of loose tubes 2 distributed outside the reinforcement 3, a small filling rope 22 located in the outer gap of the adjacent loose tubes, a small filling rope 22 located in the loose tube The protective layer 4 outside the tube and the small filling rope, the inner sheath 5 outside the protective layer, the outer sheath 7 outside the inner sheath, each loose tube contains at least one optical fiber 1, the The optical fiber is located in the optical fiber ribbon, and the optical fiber ribbon is located in the loose tube. It is characterized in that there is an anti-pecking layer 6 between the inner sheath and the outer sheath.

Anti-bird pecking optical cable, which comprises at least one loose tube 2 and at least one large filling rope distributed outside the strengthening member 3, located in the outer gap of the adjacent loose tube or the outer space of the adjacent large filling rope The small filler rope in the gap or the outer gap between the adjacent loose tube and the big filler rope, the protective layer outside the loose tube and the big filler rope and the small filler rope 4, the inner sheath outside the protective layer 5. The outer sheath 7 located outside the inner sheath, each loose tube contains at least one optical fiber 1, the optical fiber is located in the optical fiber ribbon, and the optical fiber ribbon is located in the loose tube, characterized in that the inner sheath There is an anti-peck layer 6 between the outer sheath.

In embodiment 4 of the present invention, the bird-pecking-proof optical cable comprises a loose tube 2, a water-blocking layer 8 outside the loose tube, a protective layer 4 outside the water-blocking layer, and a reinforcing layer outside the protective layer. Part 3. The outer sheath 7 located outside the reinforcement and the protective layer. The loose tube contains at least one optical fiber 1. The optical fiber is distributed in the loose tube in a loose form or placed in the loose tube. In the optical fiber ribbon, it is characterized in that there is an anti-pecking layer 6 between the protective layer and the outer sheath.

In Embodiment 5 of the present invention, the bird pecking-proof optical cable comprises a loose tube 2, a plurality of reinforcements 3 located outside the loose tube and covering the loose tube as a whole, and a plurality of reinforcements fixed The wrapping layer 9, the inner sheath 5 outside the wrapping layer, the outer sheath 7 outside the inner sheath, and at least one optical fiber 1 is contained in the loose tube, and the optical fiber is distributed in the loose sheath in a loose form. In the tube or in the optical fiber ribbon placed in the loose tube, it is characterized in that there is an anti-pecking layer 6 between the inner sheath and the outer sheath.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the wrapping layer is polyester binding yarn or other yarn-like substances with a certain strength, which is wrapped on the outside of multiple reinforcing members by spiral winding, Make the positions of multiple reinforcements relatively fixed.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the reinforcing member is steel wire or glass fiber reinforced plastic rod.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the loose tube is polybutylene terephthalate or modified polypropylene.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the inner sheath is low-density polyethylene, medium-density polyethylene or high-density polyethylene.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the outer sheath is low-density polyethylene, medium-density polyethylene, high-density polyethylene or nylon.

The above-mentioned anti-bird pecking optical cable is characterized in that the optical fiber is a single-mode or multi-mode optical fiber, and further its model is G.652 or G.655 or G.657 or A1a or A1b type.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the water-blocking layer is water-blocking tape or water-blocking yarn.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the large filling rope is polypropylene or polyethylene or a mixture of polypropylene and polyethylene.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the small filling rope is polypropylene or polyethylene or a mixture of polypropylene and polyethylene.

The above-mentioned anti-bird pecking optical cable is characterized in that the loose tube has an internal water-blocking filling material, and the internal water-blocking filling material is ointment or water-blocking powder or water-blocking yarn.

The above-mentioned anti-bird pecking optical cable is characterized in that the outer gap of the loose tube is filled with an external water-blocking filling material, and the external water-blocking filling material is ointment or water-blocking powder or water-blocking yarn.

The method for making the anti-bird pecking optical cable in Example 1 of the present invention is characterized in that it comprises the following steps:

The first step: the step of making colored optical fiber: coloring the bare optical fiber into colored optical fiber of different colors;

The second step: the step of making the loose tube: the loose tube is formed by the secondary coating extruder, and the colored optical fibers of different colors are placed in the loose tube, and the finished loose tube is formed by winding, so that the colored optical fiber is in the loose tube. The length in the sleeve is 1.002 to 1.015 times the length of the loose tube. The material of the loose tube is polybutylene terephthalate or modified polypropylene. When making the loose tube, add Special color masterbatch for loose tube extrusion; repeated many times to form multiple loose tubes of different colors;

The third step: the step of making the cable core: the multiple loose tubes produced in the second step and the purchased reinforcements are cabled in the SZ stranding and cabling machine, so that the reinforcements are located in the center and the multiple loose sleeves The tube is located outside the reinforcement, and the pitch of the SZ stranding of the loose tube is 9 to 18 times the sum of the diameters of the reinforcement and the loose tube;

The fourth step: the step of making the inner sheath: First, the steel strip or aluminum strip material is longitudinally wrapped outside the optical cable core formed in the third step to form a protective layer, and then extruded low-density polyethylene or medium-density polyethylene on the outer protective layer Polyethylene or high-density polyethylene material forms the inner sheath, and the thickness of the inner sheath is 0.8-2.0mm;

The fifth step: the step of making the anti-pecking layer: Extrude the inner sheath formed in the fourth step by the sheath extruder to form an anti-pecking layer with a thickness of 1.0-3.0mm, and the anti-pecking layer is calculated by weight , an anti-pecking layer composed of the following raw materials: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; grade 617 or grade 677 epoxy resin: 10-20 parts; diameter 10 Ultrafine steel fibers of ~80 μm with a length/diameter ratio of 5 to 10 and glass fibers with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm and silica with a diameter of 6.5 to 260 μm and a length of 0.03 to 0.3 mm Optical fiber: 40-60 parts; EVA hot-melt adhesive: 5-10 parts; antioxidant for cable sheath with model 1010: 3-5 parts; aluminum hydroxide: 15-25 parts; paraffin wax: 3-9 parts; Carbon black masterbatch: 5-10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber and silica optical fiber is (1-2): (1-2): (4-8), the Silica optical fiber is composed of a communication optical fiber body containing only a core or a core and a cladding or a core, a cladding and a coating or a core, a cladding, a coating and a colored layer, so The communication optical fiber body is composed of at least one of G.652, G.653, G.654, G.655, G.656, G.657 single-mode optical fiber and multi-mode optical fiber;

The sixth step: the step of making the outer sheath: the outer sheath material is extruded and coated with the anti-peck layer formed in the fifth step by the sheath extruder, and the thickness of the outer sheath is 1.4-3.0mm; the outer sheath The material is low density polyethylene or medium density polyethylene or high density polyethylene.

The method for making an anti-bird-pecking optical cable in Example 2 of the present invention is characterized in that it comprises the following steps:

The first step: the step of making colored optical fiber: coloring the bare optical fiber into colored optical fiber of different colors;

The second step: the step of making the loose tube: the loose tube is formed by the secondary coating extruder, and the colored optical fibers of different colors are placed in the loose tube, and the finished loose tube is formed by winding, so that the colored optical fiber is in the loose tube. The length in the sleeve is 1.002 to 1.015 times the length of the loose tube. The material of the loose tube is polybutylene terephthalate or modified polypropylene. When making the loose tube, add Special color masterbatch for loose tube extrusion; repeated many times to form multiple loose tubes of different colors;

The third step: the step of making a large filling rope: put polypropylene or polyethylene or a mixture of 85% by weight polypropylene and 15% by weight polyethylene into a φ45 or φ60 extruder, extruded and stretched to form A large filler rope with the same diameter as the loose tube obtained in the second step;

The fourth step: the step of making the core of the optical cable: the multiple loose tubes obtained in the second step, the purchased reinforcement, and the large filling rope prepared in the third step are cabled in the SZ stranding machine , so that the reinforcement is located in the center, multiple loose tubes and large filling ropes are located outside the reinforcement, and the pitch of SZ stranding is 9 to 18 times the sum of the diameters of the reinforcement and the loose tube;

The fifth step: the step of making the inner sheath: First, the steel strip or aluminum strip material is longitudinally wrapped outside the optical cable core formed in the fourth step to form a protective layer, and then extruded low-density polyethylene or medium density outside the protective layer Polyethylene or high-density polyethylene material forms the inner sheath, and the thickness of the inner sheath is 0.8-2.0mm;

The sixth step: the step of making the anti-pecking layer: Extrude the outer layer of the inner sheath formed in the fifth step by the sheath extruder to form an anti-pecking layer with a thickness of 1.0-3.0mm, and the anti-pecking layer is calculated by weight , an anti-pecking layer composed of the following raw materials: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; grade 617 or grade 677 epoxy resin: 10-20 parts; diameter 10 Ultrafine steel fibers of ~80 μm with a length/diameter ratio of 5 to 10 and glass fibers with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm and silica with a diameter of 6.5 to 260 μm and a length of 0.03 to 0.3 mm Optical fiber: 40-60 parts; EVA hot-melt adhesive: 5-10 parts; antioxidant for cable sheath with model 1010: 3-5 parts; aluminum hydroxide: 15-25 parts; paraffin wax: 3-9 parts; Carbon black masterbatch: 5-10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber and silica optical fiber is (1-2): (1-2): (4-8), the Silica optical fiber is composed of a communication optical fiber body containing only a core or a core and a cladding or a core, a cladding and a coating or a core, a cladding, a coating and a colored layer, so The communication optical fiber body is composed of at least one of G.652, G.653, G.654, G.655, G.656, G.657 single-mode optical fiber and multi-mode optical fiber;

The seventh step: the step of making the outer sheath: the outer sheath material is extruded and coated with the anti-peck layer formed in the sixth step by the sheath extruder, and the thickness of the outer sheath is 1.4-3.0mm; the outer sheath The material is low density polyethylene or medium density polyethylene or high density polyethylene.

The method for making an anti-bird-pecking optical cable in Example 4 of the present invention is characterized in that it comprises the following steps:

The first step: the step of making colored optical fiber: coloring the bare optical fiber into colored optical fiber of different colors;

The second step: the step of making the loose tube: the loose tube is formed by the secondary coating extruder, and the colored optical fibers of different colors are placed in the loose tube, and the finished loose tube is formed by winding, so that the colored optical fiber is in the loose tube. The length in the sleeve is 1.002 to 1.015 times the length of the loose tube. The material of the loose tube is polybutylene terephthalate or modified polypropylene. When making the loose tube, add Special color masterbatch for loose tube extrusion;

The third step: the step of making the anti-pecking layer: first take the water-blocking tape or water-blocking yarn material and wrap it outside the loose tube formed in the second step to form a water-blocking layer; then take the steel strip or aluminum strip and wrap it longitudinally on the Form a protective layer outside the water layer; take two reinforcements and place them outside the protective layer; then use a sheath extruder to extrude an anti-pecking layer with a thickness of 1.0-3.0mm outside the protective layer and the reinforcement. The above-mentioned anti-pecking layer is an anti-pecking layer composed of the following raw materials in parts by weight: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50 to 80 parts; epoxy resin with grade 617 or grade 677: 10 to 20 parts; ultra-fine steel fibers with a diameter of 10 to 80 μm and a length/diameter ratio of 5 to 10; glass fibers with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm; and a diameter of 6.5 to 260 μm with a length of 0.03-0.3mm silica optical fiber: 40-60 parts; EVA hot-melt adhesive: 5-10 parts; type 1010 cable sheath antioxidant: 3-5 parts; aluminum hydroxide: 15-25 parts ; Paraffin: 3-9 parts; carbon black masterbatch: 5-10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber and silica optical fiber is (1-2): (1-2): (4-8), the silica optical fiber is composed of only a core or a core and a cladding or a core, a cladding and a coating or a core, a cladding, a coating and a colored layer The communication optical fiber body is composed of at least one of G.652, G.653, G.654, G.655, G.656, G.657 single-mode optical fiber and multi-mode optical fiber. Among them, the two reinforcements are placed symmetrically outside the protective layer and the minimum distance between the reinforcement and the protective layer is 0.2mm, and the minimum distance between the reinforcement and the outer edge of the pecking layer is 0.4mm;

The fourth step: the step of making the outer sheath: extrude and coat the outer sheath material through the anti-peck layer formed in the third step by the sheath extruder; the material of the outer sheath is low-density polyethylene or medium-density polyethylene Ethylene or high-density polyethylene or nylon 12; when the material of the outer sheath is low-density polyethylene or medium-density polyethylene or high-density polyethylene, the thickness of the outer sheath is 1.0-3.0mm; when the material of the outer sheath is When nylon 12 is used, the thickness of the outer sheath is 0.4-0.8mm.

In the present invention, owing to have anti-peck layer, anti-peck layer has special formula, it can be extruded by extruder on the one hand, processing is convenient, and production speed is fast, and on phi 90 extruders, production diameter is the cable below 25mm and Optical cable, the speed can reach more than 60 m/min, and the qualified rate of the finished product is high. Because the anti-pecking layer has ultra-fine steel fiber, glass fiber and silica optical fiber, it has a very strong stabbing performance, and the bird pecks the first After one time, it will hurt it, so there is no desire to peck again, so that the cable is effectively protected. After nearly 3 years of use in the forest area, there has been no signal interruption due to birds pecking the cable. Accidents occur; at the same time, the anti-peck layer of the present invention has strong lateral pressure resistance and impact resistance; the anti-peck layer has excellent extrusion processing performance and environmental performance.

The invention is easy to manufacture and does not need to add expensive equipment.

The invention has the following main beneficial effects: easy to manufacture, good anti-pecking effect, fast production speed, high qualified rate of finished products, more pressure-resistant and impact-resistant.

Description of drawings

Fig. 1 is a schematic diagram of the cross-sectional structure of Embodiment 1 of the present invention.

Fig. 2 is a schematic diagram of the cross-sectional structure of Embodiment 2 of the present invention.

Fig. 3 is a schematic diagram of the cross-sectional structure of Embodiment 3 of the present invention.

Fig. 4 is a schematic diagram of the cross-sectional structure of Embodiment 4 of the present invention.

Fig. 5 is a schematic diagram of a cross-sectional structure of Embodiment 5 of the present invention.

detailed description

The implementation example 1 to the implementation example 5 of the present invention are the implementation examples of the anti-bird pecking optical cable and the manufacturing method thereof.

Implementation example 1

Please see Figure 1, the bird pecking-proof optical cable, which includes four loose tubes 2 distributed outside the reinforcement 3, the protective layer 4 outside the loose tube, the inner sheath 5 outside the protective layer, located The outer sheath 7 outside the inner sheath contains six optical fibers 1 in each loose tube, which is characterized in that there is an anti-pecking layer 6 between the inner sheath and the outer sheath, and the anti-pecking layer is calculated by weight , is composed of the following raw materials: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; grade 617 or grade 677 epoxy resin: 10-20 parts; diameter 10-80 μm, length /Ultrafine steel fibers with a diameter ratio of 5-10, glass fibers with a length of 0.05-0.2mm and a diameter of 0.03-0.3mm, and silica optical fibers with a diameter of 6.5-260μm and a length of 0.03-0.3mm: 40～ 60 parts; EVA hot melt adhesive: 5-10 parts; antioxidant for cable sheathing type 1010: 3-5 parts; aluminum hydroxide: 15-25 parts; paraffin wax: 3-9 parts; carbon black masterbatch : 5-10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber and silica optical fiber is (1-2): (1-2): (4-8), and the silica optical fiber It is composed of a communication optical fiber body that only contains a core, or contains a core and a cladding, or contains a core, cladding, and coating, or contains a core, cladding, coating, and colored layer. It is composed of at least one of G.652, G.653, G.654, G.655, G.656, G.657 single-mode fiber and multi-mode fiber.

Of course, there may be multiple loose tubes described in this implementation example, and each loose tube contains at least one optical fiber.

The method for making an anti-bird pecking optical cable is characterized in that it comprises the following steps:

The first step: the step of making colored optical fiber: coloring the bare optical fiber into colored optical fiber of different colors;

The second step: the step of making the loose tube: the loose tube is formed by the secondary coating extruder, and the colored optical fibers of different colors are placed in the loose tube, and the finished loose tube is formed by winding, so that the colored optical fiber is in the loose tube. The length in the sleeve is 1.002 to 1.015 times the length of the loose tube. The material of the loose tube is polybutylene terephthalate or modified polypropylene. When making the loose tube, add Special color masterbatch for loose tube extrusion; repeated many times to form multiple loose tubes of different colors;

The third step: the step of making the cable core: the multiple loose tubes produced in the second step and the purchased reinforcements are cabled in the SZ stranding and cabling machine, so that the reinforcements are located in the center and the multiple loose sleeves The tube is located outside the reinforcement, and the pitch of the SZ stranding of the loose tube is 9 to 18 times the sum of the diameters of the reinforcement and the loose tube;

The fourth step: the step of making the inner sheath: First, the steel strip or aluminum strip material is longitudinally wrapped outside the optical cable core formed in the third step to form a protective layer, and then extruded low-density polyethylene or medium-density polyethylene on the outer protective layer Polyethylene or high-density polyethylene material forms the inner sheath, and the thickness of the inner sheath is 0.8-2.0mm;

The fifth step: the step of making the anti-pecking layer: Extrude the inner sheath formed in the fourth step by the sheath extruder to form an anti-pecking layer with a thickness of 1.0-3.0mm, and the anti-pecking layer is calculated by weight , an anti-pecking layer composed of the following raw materials: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; grade 617 or grade 677 epoxy resin: 10-20 parts; diameter 10 Ultrafine steel fibers of ~80 μm with a length/diameter ratio of 5 to 10 and glass fibers with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm and silica with a diameter of 6.5 to 260 μm and a length of 0.03 to 0.3 mm Optical fiber: 40-60 parts; EVA hot-melt adhesive: 5-10 parts; antioxidant for cable sheath with model 1010: 3-5 parts; aluminum hydroxide: 15-25 parts; paraffin wax: 3-9 parts; Carbon black masterbatch: 5-10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber and silica optical fiber is (1-2): (1-2): (4-8), the Silica optical fiber is composed of a communication optical fiber body containing only a core or a core and a cladding or a core, a cladding and a coating or a core, a cladding, a coating and a colored layer, so The communication optical fiber body is composed of at least one of G.652, G.653, G.654, G.655, G.656, G.657 single-mode optical fiber and multi-mode optical fiber;

The sixth step: the step of making the outer sheath: the outer sheath material is extruded and coated with the anti-peck layer formed in the fifth step by the sheath extruder, and the thickness of the outer sheath is 1.4-3.0mm; the outer sheath The material is low density polyethylene or medium density polyethylene or high density polyethylene.

Implementation example 2

Please see Fig. 2, the anti-bird pecking optical cable, it includes four loose tubes 2 and a large filling rope 21 distributed outside the reinforcement 3, the protective layer 4 outside the loose tube and the large filling rope, and the The inner sheath 5 outside the protective layer, the outer sheath 7 outside the inner sheath, each loose tube contains at least one optical fiber 1, which is characterized in that there is a protective layer between the inner sheath and the outer sheath The peck layer 6, the anti-peck layer is composed of the following raw materials in parts by weight: medium density polyethylene or low density polyethylene or high density polyethylene: 50 to 80 parts; epoxy resin with grade 617 or grade 677 : 10 to 20 parts; ultra-fine steel fibers with a diameter of 10 to 80 μm and a length/diameter ratio of 5 to 10; glass fibers with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm; 0.03-0.3mm silica optical fiber: 40-60 parts; EVA hot melt adhesive: 5-10 parts; antioxidant for cable sheath with type 1010: 3-5 parts; aluminum hydroxide: 15-25 parts parts; paraffin wax: 3 to 9 parts; carbon black masterbatch: 5 to 10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber, and silica optical fiber is (1 to 2): (1 to 2) : (4-8), the silica optical fiber is composed of only the core or the core and the cladding or the core, the cladding and the coating or the core, the cladding, the coating and the coloring layer of communication optical fiber body, the communication optical fiber body is at least one of G.652, G.653, G.654, G.655, G.656, G.657 type single-mode optical fiber and multi-mode optical fiber constituted.

Certainly, the loose tubes described in this implementation example may be multiple, at least one; each loose tube contains at least one optical fiber; and at least one large filling rope.

The manufacturing method of the anti-bird pecking optical cable in this implementation example is characterized in that it comprises the following steps:

The first step: the step of making colored optical fiber: coloring the bare optical fiber into colored optical fiber of different colors;

The second step: the step of making the loose tube: the loose tube is formed by the secondary coating extruder, and the colored optical fibers of different colors are placed in the loose tube, and the finished loose tube is formed by winding, so that the colored optical fiber is in the loose tube. The length in the sleeve is 1.002 to 1.015 times the length of the loose tube. The material of the loose tube is polybutylene terephthalate or modified polypropylene. When making the loose tube, add Special color masterbatch for loose tube extrusion; repeated many times to form multiple loose tubes of different colors;

The third step: the step of making a large filling rope: put polypropylene or polyethylene or a mixture of 85% by weight polypropylene and 15% by weight polyethylene into a φ45 or φ60 extruder, extruded and stretched to form A large filler rope with the same diameter as the loose tube obtained in the second step;

The fourth step: the step of making the core of the optical cable: the multiple loose tubes obtained in the second step, the purchased reinforcement, and the large filling rope prepared in the third step are cabled in the SZ stranding machine , so that the reinforcement is located in the center, multiple loose tubes and large filling ropes are located outside the reinforcement, and the pitch of SZ stranding is 9 to 18 times the sum of the diameters of the reinforcement and the loose tube;

The fifth step: the step of making the inner sheath: First, the steel strip or aluminum strip material is longitudinally wrapped outside the optical cable core formed in the fourth step to form a protective layer, and then extruded low-density polyethylene or medium density outside the protective layer Polyethylene or high-density polyethylene material forms the inner sheath, and the thickness of the inner sheath is 0.8-2.0mm;

The sixth step: the step of making the anti-pecking layer: Extrude the outer layer of the inner sheath formed in the fifth step by the sheath extruder to form an anti-pecking layer with a thickness of 1.0-3.0mm, and the anti-pecking layer is calculated by weight , an anti-pecking layer composed of the following raw materials: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; grade 617 or grade 677 epoxy resin: 10-20 parts; diameter 10 Ultrafine steel fibers of ~80 μm with a length/diameter ratio of 5 to 10 and glass fibers with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm and silica with a diameter of 6.5 to 260 μm and a length of 0.03 to 0.3 mm Optical fiber: 40-60 parts; EVA hot-melt adhesive: 5-10 parts; antioxidant for cable sheath with model 1010: 3-5 parts; aluminum hydroxide: 15-25 parts; paraffin wax: 3-9 parts; Carbon black masterbatch: 5-10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber and silica optical fiber is (1-2): (1-2): (4-8), the Silica optical fiber is composed of a communication optical fiber body containing only a core or a core and a cladding or a core, a cladding and a coating or a core, a cladding, a coating and a colored layer, so The communication optical fiber body is composed of at least one of G.652, G.653, G.654, G.655, G.656, G.657 single-mode optical fiber and multi-mode optical fiber;

The seventh step: the step of making the outer sheath: the outer sheath material is extruded and coated with the anti-peck layer formed in the sixth step by the sheath extruder, and the thickness of the outer sheath is 1.4-3.0mm; the outer sheath The material is low density polyethylene or medium density polyethylene or high density polyethylene.

Implementation example 3

Please see Fig. 3, the anti-bird peck optical cable, it comprises four loose tubes 2 distributed outside the reinforcement 3, the small filling rope 22 located in the outer gap of the adjacent loose tubes, the loose tube and the small The protective layer 4 outside the filling rope, the inner sheath 5 outside the protective layer, the outer sheath 7 outside the inner sheath, each loose tube contains sixteen optical fibers 1, and the optical fibers are located at Among the optical fiber ribbons, the optical fiber ribbon is located in the loose tube, and is characterized in that there is an anti-peck layer 6 between the inner sheath and the outer sheath, and the anti-peck layer is composed of the following raw materials in parts by weight: medium density polyethylene Or low-density polyethylene or high-density polyethylene: 50-80 parts; epoxy resin with grade 617 or grade 677: 10-20 parts; ultrafine resin with a diameter of 10-80 μm and a length/diameter ratio of 5-10 Steel fibers and glass fibers with a length of 0.05-0.2mm and a diameter of 0.03-0.3mm and silica optical fibers with a diameter of 6.5-260μm and a length of 0.03-0.3mm: 40-60 parts; EVA hot-melt adhesive: 5- 10 parts; antioxidant for cable sheathing type 1010: 3-5 parts; aluminum hydroxide: 15-25 parts; paraffin wax: 3-9 parts; carbon black masterbatch: 5-10 parts; The weight ratio of steel fiber, glass fiber and silica optical fiber is (1-2): (1-2): (4-8), and the silica optical fiber is composed of only a core or a core and cladding or a communication fiber body containing a core, cladding and coating or a core, cladding, coating and coloring layer, the communication fiber body is G.652, G.653, G At least one of .654, G.655, G.656, G.657 single-mode fiber and multi-mode fiber.

Of course, there may be multiple loose tubes described in this implementation example, at least one; each loose tube contains at least one optical fiber.

Of course, the optical cable in this implementation example can also be like the implementation example 2, a bird pecking-proof optical cable, which includes at least one loose tube 2 and at least one large filling rope distributed outside the reinforcement 3, located adjacent to The small filler rope in the outer gap of the loose tube or the outer gap of the adjacent large filler rope or the outer gap between the adjacent loose tube and the large filler rope, located in the loose tube and the large filler rope and the small filler The protective layer 4 outside the rope, the inner sheath 5 outside the protective layer, the outer sheath 7 outside the inner sheath, each loose tube contains at least one optical fiber 1, and the optical fiber is located in the optical fiber Among the ribbons, the optical fiber ribbon is located in the loose tube, which is characterized in that there is an anti-pecking layer 6 between the inner sheath and the outer sheath, and the anti-pecking layer is composed of the following raw materials in parts by weight: medium density polyethylene or Low-density polyethylene or high-density polyethylene: 50-80 parts; grade 617 or grade 677 epoxy resin: 10-20 parts; ultra-fine steel with a diameter of 10-80 μm and a length/diameter ratio of 5-10 Fiber and glass fiber with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm and a silica optical fiber with a diameter of 6.5 to 260 μm and a length of 0.03 to 0.3 mm: 40 to 60 parts; EVA hot melt adhesive: 5 to 10 1010 antioxidant for cable sheath: 3-5 parts; aluminum hydroxide: 15-25 parts; paraffin wax: 3-9 parts; carbon black masterbatch: 5-10 parts; The weight ratio of fiber, glass fiber and silica fiber is (1-2): (1-2): (4-8), and the silica fiber is composed of only a core or a core and The cladding or the communication optical fiber body containing the core, cladding and coating layer or containing the core, cladding, coating layer and coloring layer, the communication optical fiber body is G.652, G.653, G. At least one of 654, G.655, G.656, G.657 single-mode fiber and multi-mode fiber.

Certainly, the loose tubes described in this implementation example may be multiple, at least one; each loose tube contains at least one optical fiber; and at least one large filling rope.

The production method of the anti-bird pecking optical fiber cable in this implementation example can refer to Example 1 and Example 2, except that after the coloring is completed, there is an additional step of making an optical fiber ribbon. The colored optical fibers are combined to form an optical fiber ribbon, and then loosened. During tube formation, the fiber optic ribbon is placed within a loose tube.

When the anti-bird pecking optical cable in this implementation example is produced, when there is a small filling rope, when SZ is cabled, the small filling rope is placed in the outer gap of the adjacent loose tube or in the outer gap of the adjacent large filling rope Or in the outer gap between the adjacent loose tube and the large filler rope.

Implementation example 4

Please see Figure 4, the bird pecking-proof optical cable, which includes a loose tube 2, a water blocking layer 8 outside the loose tube, a protective layer 4 outside the water blocking layer, a strengthening member 3 outside the protective layer, The outer sheath 7 located outside the strength member and the protective layer, the loose tube contains twelve optical fibers 1, and the optical fibers are distributed in the loose tube in a loose form or located in the fiber ribbon placed in the loose tube Among them, it is characterized in that there is an anti-peck layer 6 between the protective layer and the outer sheath, and the reinforcement is located in the anti-peck layer. The anti-peck layer is composed of the following raw materials in parts by weight: medium density polyethylene or low Density polyethylene or high-density polyethylene: 50-80 parts; grade 617 or grade 677 epoxy resin: 10-20 parts; ultra-fine steel fibers with a diameter of 10-80 μm and a length/diameter ratio of 5-10 Glass fibers with a length of 0.05-0.2mm and a diameter of 0.03-0.3mm and silica optical fibers with a diameter of 6.5-260μm and a length of 0.03-0.3mm: 40-60 parts; EVA hot-melt adhesive: 5-10 parts ; Type 1010 cable sheath antioxidant: 3 to 5 parts; aluminum hydroxide: 15 to 25 parts; paraffin wax: 3 to 9 parts; carbon black masterbatch: 5 to 10 parts; , glass fiber, and silica fiber are (1-2): (1-2): (4-8), and the silica fiber is composed of only a core or a core and a cladding Layer or a communication fiber body containing a core, cladding and coating or a core, cladding, coating and coloring layer, the communication fiber body is G.652, G.653, G.654 , G.655, G.656, G.657 type single-mode fiber and at least one of multi-mode fiber.

Of course, at least one optical fiber is contained in the loose tube described in this implementation example.

The manufacturing method of the anti-bird pecking optical cable in this implementation example is characterized in that it comprises the following steps:

The first step: the step of making colored optical fiber: coloring the bare optical fiber into colored optical fiber of different colors;

The second step: the step of making the loose tube: the loose tube is formed by the secondary coating extruder, and the colored optical fibers of different colors are placed in the loose tube, and the finished loose tube is formed by winding, so that the colored optical fiber is in the loose tube. The length in the sleeve is 1.002 to 1.015 times the length of the loose tube. The material of the loose tube is polybutylene terephthalate or modified polypropylene. When making the loose tube, add Special color masterbatch for loose tube extrusion;

The third step: the step of making the anti-pecking layer: first take the water-blocking tape or water-blocking yarn material and wrap it outside the loose tube formed in the second step to form a water-blocking layer; then take the steel strip or aluminum strip and wrap it longitudinally on the Form a protective layer outside the water layer; take two reinforcements and place them outside the protective layer; then use a sheath extruder to extrude an anti-pecking layer with a thickness of 1.0-3.0mm outside the protective layer and the reinforcement. The above-mentioned anti-pecking layer is an anti-pecking layer composed of the following raw materials in parts by weight: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50 to 80 parts; epoxy resin with grade 617 or grade 677: 10 to 20 parts; ultra-fine steel fibers with a diameter of 10 to 80 μm and a length/diameter ratio of 5 to 10; glass fibers with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm; and a diameter of 6.5 to 260 μm with a length of 0.03-0.3mm silica optical fiber: 40-60 parts; EVA hot-melt adhesive: 5-10 parts; type 1010 cable sheath antioxidant: 3-5 parts; aluminum hydroxide: 15-25 parts ; Paraffin: 3-9 parts; carbon black masterbatch: 5-10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber and silica optical fiber is (1-2): (1-2): (4-8), the silica optical fiber is composed of only a core or a core and a cladding or a core, a cladding and a coating or a core, a cladding, a coating and a colored layer The communication optical fiber body is composed of at least one of G.652, G.653, G.654, G.655, G.656, G.657 single-mode optical fiber and multi-mode optical fiber. Among them, the two reinforcements are placed symmetrically outside the protective layer and the minimum distance between the reinforcement and the protective layer is 0.2mm, and the minimum distance between the reinforcement and the outer edge of the pecking layer is 0.4mm;

The fourth step: the step of making the outer sheath: extrude and coat the outer sheath material through the anti-peck layer formed in the third step by the sheath extruder; the material of the outer sheath is low-density polyethylene or medium-density polyethylene Ethylene or high-density polyethylene or nylon 12; when the material of the outer sheath is low-density polyethylene or medium-density polyethylene or high-density polyethylene, the thickness of the outer sheath is 1.0-3.0mm; when the material of the outer sheath is When nylon 12 is used, the thickness of the outer sheath is 0.4-0.8mm.

Implementation Example 5

Please see Figure 5, the bird-pecking-proof optical cable, which includes a loose tube 2, multiple strength members 3 that are located outside the loose tube and cover the loose tube as a whole, and a wrapping layer 9 that fixes the multiple strength members , an inner sheath 5 outside the wrapping layer, an outer sheath 7 outside the inner sheath, the loose tube contains twelve optical fibers 1, and the optical fibers are distributed in the loose tube in a loose form Or in the optical fiber ribbon placed in the loose tube, it is characterized in that there is an anti-peck layer 6 between the inner sheath and the outer sheath, and the anti-peck layer is composed of the following raw materials in parts by weight: Density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; epoxy resin with grade 617 or grade 677: 10-20 parts; diameter 10-80 μm, length/diameter ratio 5-10 Ultra-fine steel fibers with a length of 0.05-0.2mm and glass fibers with a diameter of 0.03-0.3mm and silica optical fibers with a diameter of 6.5-260μm and a length of 0.03-0.3mm: 40-60 parts; EVA hot melt adhesive : 5-10 parts; Antioxidant for cable sheath of type 1010: 3-5 parts; Aluminum hydroxide: 15-25 parts; Paraffin wax: 3-9 parts; Carbon black masterbatch: 5-10 parts; The weight ratio of the ultra-fine steel fiber, glass fiber and silica fiber is (1-2): (1-2): (4-8), and the silica fiber is composed of only the core or Composed of a communication fiber body containing a core and a cladding or a core, a cladding and a coating or a core, a cladding, a coating and a colored layer, the communication fiber is G.652, G. At least one of 653, G.654, G.655, G.656, G.657 single-mode fiber and multi-mode fiber.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the wrapping layer is polyester binding yarn or other yarn-like substances with a certain strength, which is wrapped on the outside of multiple reinforcing members by spiral winding, Make the positions of multiple reinforcements relatively fixed.

Of course, at least one optical fiber is contained in the loose tube described in this implementation example.

The manufacturing method of the anti-bird pecking optical cable in this implementation example is characterized in that it comprises the following steps:

The first step: the step of making colored optical fiber: coloring the bare optical fiber into colored optical fiber of different colors;

The second step: the step of making the loose tube: the loose tube is formed by the secondary coating extruder, and the colored optical fibers of different colors are placed in the loose tube, and the finished loose tube is formed by winding, so that the colored optical fiber is in the loose tube. The length in the sleeve is 1.002 to 1.015 times the length of the loose tube. The material of the loose tube is polybutylene terephthalate or modified polypropylene. When making the loose tube, add Special color masterbatch for loose tube extrusion;

The third step: the step of making the wrapping layer: First, the multiple reinforcements obtained from the purchase are wrapped on the outside of the loose tube formed in the second step. The pitch is 100 to 300 times the diameter of the reinforcement, and the reinforcement is steel wire or glass fiber reinforced plastic; then the purchased polyester yarn or other yarns with a certain strength are spirally wound at a pitch of 20 to 50mm. A wrapping layer is formed outside the reinforcement;

The fourth step: the step of making the inner sheath: Extrude and coat the low-density polyethylene, medium-density polyethylene or high-density polyethylene material on the outside of the wrapping layer formed in the third step to form an inner sheath. The thickness of the inner sheath is 0.8 ~ 2.0mm;

The fifth step: the step of making the anti-pecking layer: Extrude the inner sheath formed in the fourth step by the sheath extruder to form an anti-pecking layer with a thickness of 1.0-3.0mm, and the anti-pecking layer is calculated by weight , an anti-pecking layer composed of the following raw materials: medium-density polyethylene or low-density polyethylene or high-density polyethylene: 50-80 parts; grade 617 or grade 677 epoxy resin: 10-20 parts; diameter 10 Ultrafine steel fibers of ~80 μm with a length/diameter ratio of 5 to 10 and glass fibers with a length of 0.05 to 0.2 mm and a diameter of 0.03 to 0.3 mm and silica with a diameter of 6.5 to 260 μm and a length of 0.03 to 0.3 mm Optical fiber: 40-60 parts; EVA hot-melt adhesive: 5-10 parts; antioxidant for cable sheath with model 1010: 3-5 parts; aluminum hydroxide: 15-25 parts; paraffin wax: 3-9 parts; Carbon black masterbatch: 5-10 parts; the ratio of parts by weight of the ultra-fine steel fiber, glass fiber and silica optical fiber is (1-2): (1-2): (4-8), the Silica optical fiber is composed of a communication optical fiber body containing only a core or a core and a cladding or a core, a cladding and a coating or a core, a cladding, a coating and a colored layer, so The communication optical fiber body is composed of at least one of G.652, G.653, G.654, G.655, G.656, G.657 single-mode optical fiber and multi-mode optical fiber;

The sixth step: the step of making the outer sheath: Extrude and coat the outer sheath material through the anti-peck layer formed in the fifth step by the sheath extruder; the material of the outer sheath is low-density polyethylene or medium-density polyethylene Ethylene or high-density polyethylene or nylon 12; when the material of the outer sheath is low-density polyethylene or medium-density polyethylene or high-density polyethylene, the thickness of the outer sheath is 1.0-3.0mm; when the material of the outer sheath is When nylon 12 is used, the thickness of the outer sheath is 0.4-0.8mm.

The anti-bird pecking optical cable described in any of the above implementation examples is characterized in that the optimal implementation of the anti-pecking layer is: by weight, the anti-pecking layer is composed of the following raw materials: medium density polyethylene or low density Polyethylene or high-density polyethylene: 50 parts; grade 617 or grade 677 epoxy resin: 10 parts; ultra-fine steel fibers with a diameter of 10-80 μm, a length/diameter ratio of 5-10 and a length of 0.05- Glass fiber with a diameter of 0.2mm and a diameter of 0.03-0.3mm and silica optical fiber with a diameter of 6.5-260μm and a length of 0.03-0.3mm: 40 parts; EVA hot-melt adhesive: 5 parts; cable sheath of model 1010 Antioxidant: 3 parts; aluminum hydroxide: 15 parts; paraffin: 3 parts; carbon black masterbatch: 5 parts; the weight and number ratio of the ultra-fine steel fiber, glass fiber and silica optical fiber is (1～ 2): (1~2): (4~8), the silica optical fiber is composed of only the core or the core and cladding or the core, cladding and coating or the core, Cladding, coating and coloring layer communication fiber body, the communication fiber body is G.652, G.653, G.654, G.655, G.656, G.657 type single-mode fiber, At least one type of multimode fiber.

The anti-bird pecking optical cable described in any of the above implementation examples is characterized in that the suboptimal implementation of the anti-pecking layer is: by weight, the anti-pecking layer is composed of the following raw materials: medium density polyethylene or low density Polyethylene or high-density polyethylene: 80 parts; epoxy resin with grade 617 or grade 677: 20 parts; ultra-fine steel fibers with a diameter of 10-80 μm, a length/diameter ratio of 5-10 and a length of 0.05- 0.2mm glass fiber with a diameter of 0.03-0.3mm and silica optical fiber with a diameter of 6.5-260μm and a length of 0.03-0.3mm: 60 parts; EVA hot-melt adhesive: 10 parts; cable sheath of model 1010 Antioxidant: 5 parts; Aluminum hydroxide: 25 parts; Paraffin: 9 parts; Carbon black masterbatch: 10 parts; The weight and number ratio of described ultra-fine steel fiber, glass fiber, silica optical fiber is (1～ 2): (1~2): (4~8), the silica optical fiber is composed of only the core or the core and cladding or the core, cladding and coating or the core, Cladding, coating and coloring layer communication fiber body, the communication fiber body is G.652, G.653, G.654, G.655, G.656, G.657 type single-mode fiber, At least one type of multimode fiber.

The anti-bird pecking optical cable described in any of the above implementation examples is characterized in that the preferred embodiment of the anti-pecking layer is: by weight, the anti-pecking layer is composed of the following raw materials: medium density polyethylene or low density Polyethylene or high-density polyethylene: 65 parts; grade 617 or grade 677 epoxy resin: 15 parts; ultra-fine steel fibers with a diameter of 10-80 μm, a length/diameter ratio of 5-10 and a length of 0.05- Glass fiber with a diameter of 0.2mm and a diameter of 0.03-0.3mm and a silica optical fiber with a diameter of 6.5-260μm and a length of 0.03-0.3mm: 50 parts; EVA hot-melt adhesive: 8 parts; cable sheath of model 1010 Antioxidant: 4 parts; Aluminum hydroxide: 20 parts; Paraffin: 6 parts; Carbon black masterbatch: 7.5 parts; The weight and number ratio of described ultrafine steel fiber, glass fiber, silica optical fiber is (1～ 2): (1~2): (4~8), the silica optical fiber is composed of only the core or the core and cladding or the core, cladding and coating or the core, Cladding, coating and coloring layer communication fiber body, the communication fiber body is G.652, G.653, G.654, G.655, G.656, G.657 type single-mode fiber, At least one type of multimode fiber.

The above-mentioned anti-bird pecking optical cable is characterized in that the medium density polyethylene or low density polyethylene or high density polyethylene in the anti pecking layer can be pure medium density polyethylene or low density polyethylene or high density polyethylene Polyethylene can also be medium-density polyethylene, low-density polyethylene or high-density polyethylene finished materials for cables.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the reinforcing member is steel wire or glass fiber reinforced plastic rod.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the loose tube is polybutylene terephthalate or modified polypropylene.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the protective layer is steel strip or aluminum strip.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the inner sheath is low-density polyethylene, medium-density polyethylene or high-density polyethylene.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the outer sheath is low-density polyethylene, medium-density polyethylene, high-density polyethylene or nylon.

The above-mentioned anti-bird pecking optical cable is characterized in that the optical fiber is a single-mode or multi-mode optical fiber, and further its model is G.652 or G.655 or G.657 or A1a or A1b type.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the water-blocking layer is water-blocking tape or water-blocking yarn.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the large filling rope is polypropylene or polyethylene or a mixture of polypropylene and polyethylene.

The above-mentioned anti-bird pecking optical cable is characterized in that the material of the small filling rope is polypropylene or polyethylene or a mixture of polypropylene and polyethylene.

In the present invention, owing to have anti-peck layer, anti-peck layer has special formula, it can be extruded by extruder on the one hand, processing is convenient, and production speed is fast, and on phi 90 extruders, production diameter is the cable below 25mm and Optical cable, the speed can reach more than 60 m/min, and the qualified rate of the finished product is high. Because the anti-pecking layer has ultra-fine steel fiber, glass fiber and silica optical fiber, it has a very strong stabbing performance, and the bird pecks the first After one time, it will hurt it, so there is no desire to peck again, so that the cable is effectively protected. After nearly 3 years of use in the forest area, there has been no interruption of communication due to birds pecking the optical cable. Accidents occur; meanwhile, the peck-proof layer of the present invention has strong lateral pressure resistance and impact resistance. Ultra-fine steel fiber or glass fiber can be purchased in the market, and for the silica optical fiber in the anti-peck layer, it can be obtained by purchasing optical fiber for crushing, crushing, and filtering. Not only can the finished optical fiber be used, but also can be used Optical fiber cores or silica optical fiber cores without cladding, coating, or cladding, coating, and coloring layer can even be obtained by crushing, crushing, and filtering optical fiber waste to achieve waste utilization The purpose of reducing the pollution of optical fiber manufacturers; in addition, the materials and products in the present invention do not involve environmental pollution problems.

The invention is easy to manufacture and does not need to add expensive equipment.

In the present invention, when there is a protective layer, the protective layer and the anti-pecking layer jointly resist the pecking of birds. The performance in terms of pressure resistance is greatly increased.

In the present invention, expensive nylon can be avoided as much as possible for the outer sheath, so that the cost can be greatly reduced, and the comprehensive cost of purchase and maintenance of the user is lower.

Of course, the outer sheath in the present invention can also use colored sheaths, such as red, yellow, etc., preferably still commonly used black.

The invention has the following main beneficial effects: easy to manufacture, good anti-pecking effect, fast production speed, high qualified rate of finished products, more pressure-resistant and impact-resistant.

The applicant compared the use of the anti-bird pecking optical cable in this application with the optical cable produced by the prior art. The optical cables are all laid overhead, and the structure of the present invention adopts the structure of Example 1, and the outer sheath is black and red. 1 #-4# indicates different anti-pecking layer formulations, 1# is the largest range, and the weight ratio of ultra-fine steel fiber, glass fiber, and silica optical fiber is (1~2): (1~2): (4~8); 2# is the optimal implementation formula, in which the weight-to-number ratio of ultra-fine steel fiber, glass fiber, and silica optical fiber is 1:1:8; 3# is the suboptimal implementation formula, in which ultra-fine The ratio of parts by weight of steel fiber, glass fiber and silica fiber is 1:1:3; 4# is a better implementation formula, wherein the ratio of parts by weight of ultra-fine steel fiber, glass fiber and silica fiber is 1 : 1: 1; The control group is 5#, and what adopt is the structure of implementation example 1, but it does not have peck-proof layer, but the thickness of outer sheath is the outer sheath thickness of implementation example 1 of the present invention plus the thickness of peck-proof layer , the outer sheath is red, and each serial number is used for 100 kilometers in the same forest area in Hunan, and the following data are obtained.

It can be clearly seen from the above table that, by adopting the present invention, due to the effect of the anti-peck layer, the transmission of power and communication is indeed guaranteed. At the same time, the anti-peck performance of the anti-peck layer with more silica fiber content is optimal ; Moreover, when the outer sheath is colored, it is more likely to be pecked by birds.

The applicant has also carried out the same comparative test to other embodiments, and the test results are basically consistent; the anti-peck layer in the present invention has been tested, and its performance is higher than the minimum performance requirements of the industry and national standards for optical cables and cable sheath materials , Excellent processing performance.

The present invention is not limited to the best implementation mode above, it should be understood that the concept of the present invention can be implemented in other forms, and they also fall within the protection scope of the present invention.

Claims (3)

1. a kind of manufacture method of anti-unfirmly closing optical cable, the anti-unfirmly closing optical cable includes Loose tube, blocking water outside Loose tube Layer, the overcoat outside water blocking layer, the reinforcer outside overcoat, the outer shield outside reinforcer and overcoat Set, comprises at least an optical fiber in Loose tube, optical fiber be with the formal distribution of bulk in Loose tube or position In the fibre ribbon being placed in Loose tube, it is characterised in that have one to prevent pecking layer between overcoat and oversheath；Its feature It is that the manufacture method of the anti-unfirmly closing optical cable comprises the steps of：

The first step：The step of making colored optical fiber：Colored optical fiber by naked colouring optical fibres into different colours；

Second step：The step of making Loose tube：By secondary coated extruding machine formed Loose tube, and by different colours coloured light Fibre is placed into Loose tube, is wound to form Loose tube finished product, length of the colored optical fiber in Loose tube is grown for Loose tube 1.002~1.015 times of degree, the material of Loose tube is polybutylene terephthalate (PBT) or modified polypropene, makes Loose tube When in the material of Loose tube add Loose tube extrusion molding special color master batch；

3rd step：The step of making anti-peck layer：First take waterstop or the yarn material that blocks water be coated on second step formation Loose tube it Outer formation water blocking layer；Steel band or aluminium strip is taken longitudinally to be coated on outside water blocking layer and form overcoat again；Two reinforcements are taken to place again Outside overcoat；Then by sheath extruding machine, extrusion molding thickness is the anti-of 1.0~3.0mm thickness outside overcoat and reinforcer Peck layer, it is described it is anti-peck layer by weight, anti-peck layer by what following raw material were formed：Medium density polyethylene or low density polyethylene (LDPE) Or high density polyethylene (HDPE)：50~80 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677：10~20 parts；A diameter of 10~80 μ M, the ultra-fine steel fibre and length that length/diameter ratio is 5~10 are 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibers The silica optical fiber that peacekeeping is a diameter of 6.5~260 μm, length is 0.03~0.3mm：40~60 parts；EVA hot-melt adhesive：5~10 Part；The cable jacket antioxidant of model 1010：3~5 parts；Aluminium hydroxide：15~25 parts；Paraffin：3~9 parts；Carbon black is female Grain：5~10 parts；The ultra-fine steel fibre, glass fibre, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4 ~8）, the silica optical fiber is by only including fibre core either containing fibre core and covering or containing fibre core, covering and coating Layer or the slim composition of Communication ray containing fibre core, covering, coat and dyed layer, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 at least one of type single-mode fiber, multimode fibre are formed；Wherein, two Reinforcer is to be placed in overcoat external symmetry and minimum range between reinforcer and overcoat be 0.2mm, and reinforcer is away from preventing The minimum range for pecking layer outer rim is 0.4mm；

4th step：The step of making oversheath：Protected by sheath extruding machine in anti-peck that the 3rd step is formed outside layer outside extrusion molding cladding Cover material；The material of oversheath is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or nylon 12；When outer shield When the material of set is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE), oversheath thickness is 1.0~3.0mm； When the material of oversheath is nylon 12, oversheath thickness is 0.4~0.8mm.

2. a kind of anti-unfirmly closing optical cable, it include be distributed in outside reinforcer more Loose tubes, positioned at the outer of adjacent Loose tube Small gasket for packing in gap, the overcoat outside Loose tube and small gasket for packing, the sheath outside overcoat, are located at Oversheath outside sheath, comprises at least an optical fiber in every Loose tube, the optical fiber be located at fibre ribbon it In, fibre ribbon is located in Loose tube, it is characterised in that has one to prevent pecking layer between sheath and oversheath；Or anti-unfirmly closing light Cable, it includes at least Loose tube being distributed in outside reinforcer and at least one big gasket for packing, positioned at adjacent Loose tube External series gap in or the external series gap of adjacent big gasket for packing in or adjacent Loose tube filled out with small in the external series gap of big gasket for packing Rope, the overcoat outside Loose tube and big gasket for packing and small gasket for packing, the sheath outside overcoat are filled, positioned at interior Oversheath outside sheath, every Loose tube is interior to comprise at least an optical fiber, and the optical fiber is located among fibre ribbon, Fibre ribbon is located in Loose tube, it is characterised in that has one to prevent pecking layer between sheath and oversheath；It is described to prevent pecking layer by weight Part meter, is made up of following raw material：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50~80 parts；The trade mark For 617 or the trade mark be 677 epoxy resin：10~20 parts；A diameter of 10~80 μm, the extra-fine steel that length/diameter ratio is 5~10 Fiber and length are 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length are 0.03~0.3mm silica optical fiber：40~60 parts；EVA hot-melt adhesive：5~10 parts；The cable jacket of model 1010 is used anti- Oxidant：3~5 parts；Aluminium hydroxide：15~25 parts；Paraffin：3~9 parts；Carbon black master batch：5~10 parts；The ultra-fine steel fibre, Glass fibre, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~8）, the silica optical fiber be by Only either containing fibre core and covering or containing fibre core, covering and coat or contain fibre core, covering, coat comprising fibre core With the slim composition of Communication ray of dyed layer, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 at least one of type single-mode fiber, multimode fibre are formed；Or it is described it is anti-peck layer by weight, by following original The anti-of material composition pecks layer：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50 parts；The trade mark is 617 or board Number be 677 epoxy resin：10 parts；A diameter of 10~80 μm, length/diameter ratio be 5~10 ultra-fine steel fibre and length be 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length are 0.03~0.3mm's Silica optical fiber：40 parts；EVA hot-melt adhesive：5 parts；The cable jacket antioxidant of model 1010：3 parts；Aluminium hydroxide： 15 parts；Paraffin：3 parts；Carbon black master batch：5 parts；The ultra-fine steel fibre, glass fibre, the ratio of weight and number of silica optical fiber are （1~2）：（1~2）：（4~8）, the silica optical fiber either containing fibre core and covering or is contained by only including fibre core Fibre core, covering and coat or the slim composition of Communication ray containing fibre core, covering, coat and dyed layer, the communication Optical fiber body for G.652, G.653, G.654, G.655, G.656, G.657 at least one of type single-mode fiber, multimode fibre structure Into.

3. a kind of anti-unfirmly closing optical cable, it includes Loose tube, the water blocking layer outside Loose tube, the protection outside water blocking layer Layer, the reinforcer outside overcoat, the oversheath outside reinforcer and overcoat, Loose tube is interior to comprise at least one Optical fiber, optical fiber be with the formal distribution of bulk in Loose tube or positioned at the fibre ribbon being placed in Loose tube In, it is characterised in that have one to prevent pecking layer between overcoat and oversheath；It is described to prevent pecking layer by weight, by following former material Material is formed：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50~80 parts；The trade mark is 617 or the trade mark is 677 Epoxy resin：10~20 parts；A diameter of 10~80 μm, length/diameter ratio be 5~10 ultra-fine steel fibre and length be 0.05 ~0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length are 0.03~0.3mm dioxy SiClx optical fiber：40~60 parts；EVA hot-melt adhesive：5~10 parts；The cable jacket antioxidant of model 1010：3~5 parts；Hydrogen Aluminum oxide：15~25 parts；Paraffin：3~9 parts；Carbon black master batch：5~10 parts；The ultra-fine steel fibre, glass fibre, silica The ratio of weight and number of optical fiber is（1~2）：（1~2）：（4~8）, the silica optical fiber is by only including fibre core or containing The telecommunication optical fiber of fibre core and covering either containing fibre core, covering and coat or containing fibre core, covering, coat and dyed layer Body composition, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type single-mode fiber, multimode light What at least one of fibre was formed；Or it is described it is anti-peck layer by weight, anti-peck layer by what following raw material were formed：Midst density Polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677：10 parts； A diameter of 10~80 μm, length/diameter ratio be 5~10 ultra-fine steel fibre and length be 0.05~0.2mm, it is a diameter of 0.03~ 0.3mm glass fibre and the silica optical fiber that a diameter of 6.5~260 μm, length is 0.03~0.3mm：40 parts；EVA heat Melten gel：5 parts；The cable jacket antioxidant of model 1010：3 parts；Aluminium hydroxide：15 parts；Paraffin：3 parts；Carbon black master batch：5 Part；The ultra-fine steel fibre, glass fibre, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~8）, institute It is by only including fibre core either containing fibre core and covering or containing fibre core, covering and coat or containing to state silica optical fiber Formed by the Communication ray of fibre core, covering, coat and dyed layer is slim, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 at least one of type single-mode fiber, multimode fibre are formed.