CN106842462B

CN106842462B - A kind of method of anti-unfirmly closing optical cable and the anti-unfirmly closing optical cable of production

Info

Publication number: CN106842462B
Application number: CN201710237642.7A
Authority: CN
Inventors: 沈群华
Original assignee: Jiangsu Hua Mai Optoelectronic Technology Co Ltd
Current assignee: Jiangsu Hua Mai Optoelectronic Technology Co., Ltd.; Nanjing Huamai Technology Co Ltd
Priority date: 2015-03-10
Filing date: 2015-03-10
Publication date: 2019-04-02
Anticipated expiration: 2035-03-10
Also published as: CN106842462A; CN106990495A; CN104614830B; CN106959496A; CN104614830A

Abstract

The invention belongs to technical field of cables, more particularly, to anti-unfirmly closing optical cable, it includes more Loose tubes being distributed in except reinforcer, protective layer except Loose tube, sheath except protective layer, oversheath except sheath, an optical fiber is included at least in every Loose tube, it is characterized in that having one to prevent pecking layer between sheath and oversheath, it is described to prevent that peck layer is made of following raw material: medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE), epoxy resin, ultra-fine steel fibre and glass fibre and silica optical fiber, EVA hot-melt adhesive, antioxidant, aluminium hydroxide, paraffin, black masterbatch.Present invention further teaches its production methods.The present invention has following main the utility model has the advantages that easy to manufacture, anti-peck that effect is good, speed of production is fast, product qualified rate is high, more resistant to pressure and more resistant to impact.

Description

A kind of method of anti-unfirmly closing optical cable and the anti-unfirmly closing optical cable of production

The application is title are as follows: a kind of anti-unfirmly closing optical cable and preparation method thereof, the applying date: on 03 10th, 2015, application Number are as follows: the divisional application of 201510104204.4 application for a patent for invention.

Technical field

The invention belongs to technical field of cables, more particularly, to a kind of anti-unfirmly closing optical cable and preparation method thereof.

Background technique

For the existence for adapting to environment, be grown in birds near forest zone mostly with sharp puff, they can peck bad cable, Communications optical cable cable sheath and insulating layer.In cable and communications optical cable, for the ease of identification, usual insulating layer and Loose tube are with more Kind color, after pipping sheath, the insulating layer and Loose tube of various colors look like pattern insect, and birds are eaten by mistake and often peck bad Insulated wire cores, optical fiber, or even peck disconnected copper conductor, cause electric power/communication obstructed.Sleet is entered in cable by the sheath broken Portion causes the communication failure of unknown cause over time.More forest land areas at home, such as Hunan, Yunnan, Zhejiang, Guilin Ground has occurred and that the failure for repeatedly being broken cable by unfirmly closing, causes immeasurable loss.

For this purpose, the country has carried out a large amount of research.Title are as follows: anti-pecking 8-shaped photoelectrical composite cable, Authorization Notice No.: The patent of CN202041686U is filled by sheath, copper wire bed course, copper conductor, pine set filled composite, optical fiber, Loose tube, cable core Compound, reinforcer bed course, reinforcer, auxiliary reinforcing element, moisture-proof layer composition, in Loose tube, Loose tube is centered around optical fiber It around reinforcer, is wrapped up by band, cable core filled composite is moisture-proof layer outside band, they form cable core, with packet in band There is the copper conductor bed course sheath of copper conductor, they form 8-shaped sheath by sheath, and sheath is red.It can effectively protect cable When outdoor is aerial not by unfirmly closing；Title are as follows: anti-unfirmly closing indoor and outdoor integration photoelectricity composite cable, Authorization Notice No.: The patent of CN203165550U, it includes flame-retardant sheath material, optical fiber, reinforcer, conducting wire, applies plastic composite strip, insulating layer and red PE sheath, for optical fiber 7 at the center of flame-retardant sheath material 6, two sides are reinforcers 5, conducting wire 4 by after 3 longitudinal wrap of painting plastic composite strip with it is fire-retardant 1 carries out outer protect with red PE sheath after protective cover material 6 is twisted together.This product is mainly used in connecting between mobile base station and launching tower It connects, connection in computer room, can reach the effect for avoiding local power failure or battery group failure and causing power-off of base station；Network is reduced to build If expense, secondary wiring is avoided, it can also anti-unfirmly closing；Title are as follows: outdoor nonmetal bird pecking prevention aerial optical cable, Authorization Notice No.: The patent of CN202067003U, it includes optical fiber, Loose tube, fiber paste, center reinforcemen, sheath, the Loose tube containing optical fiber (6) (8) it is centered around around center reinforcemen (2), has fiber paste (7) in Loose tube (8), Loose tube (8) is wrapped up by band (5), housing shield It covers (9), it is characterised in that: have material water-proof material (4) in band (5), sheath (9) is red pe sheath；Title are as follows: self-bearing type Anti- unfirmly closing overhead aluminum core composite cable, Authorization Notice No.: the patent of CN202258545U, it includes that sheath, aluminum conductor, cable core are filled out Compound, reinforcer, optical fiber, pine set filled composite, Loose tube, band, moisture-proof layer and steel strand wires, optical fiber (7) is filled to cover in pine It manages in (9), has pine set filled composite (8), Loose tube (9) and aluminum conductor (3) twisted around reinforcer (6) in Loose tube (9) It is wrapped up together by band (11), it is characterised in that: there are moisture-proof layer (12) and 8 font red sheaths (1) outside band (11), it is small straight There are steel strand wires (13) in diameter red sheath；Title are as follows: anti-unfirmly closing self-bearing type butterfly leading in cable, Authorization Notice No.: The patent of CN202649559U, it includes optical fiber, reinforcer and oversheath, and reinforcer is in optical fiber two sides, together by oversheath packet Wrap up in into butterfly, it is characterised in that: oversheath (4) side is also connected with the red sheath (5) equipped with wire reinforcement (1)；Title Are as follows:, Authorization Notice No.: the patent of CN202523458U, it is characterised in that: Loose tube and copper conductor are centered around around reinforcer, Optical fiber and pine set filled composite are in Loose tube, they are all wrapped up by band, and outside is moisture-proof layer, it is characterised in that: gear tide The sheath of layer (11) outside is red sheath；Title are as follows: a kind of anti-unfirmly closing optical cable, Authorization Notice No.: the patent of CN203133348U, There is the fiber unit collectively formed by optical fiber, fiber paste, ferrule and center to reinforce including cable core and oversheath, in cable core Part, gasket for packing, it is characterised in that be successively arranged between cable core and oversheath and prick yarn layer and wrinkle steel belt layer, oversheath is red Sheath and yellow sheath are symmetrical arranged longitudinally twisted structure.Oversheath is symmetrical arranged longitudinal using red sheath and yellow sheath The structure of torsion, it is outer to be similar to the snake being wrapped on optical cable, be afraid of bird pest, dare not fly to gnaw in cable surface again and peck optical cable, make light Cable is hardly damaged, and is prolonged the service life；Title are as follows: novel anti-unfirmly closing colour code optical cable, Authorization Notice No.: CN203133349U's is special Benefit, including cable core and oversheath, cable core are interior with the fiber unit collectively formed by optical fiber, fiber paste, ferrule and center Reinforcer, gasket for packing, it is characterised in that it is successively arranged between cable core and oversheath and pricks yarn layer, inner sheath and wrinkle steel belt layer, The structure of oversheath is longitudinal red sheath for being equidistantly equipped with several yellow colour codes；Title are as follows: the frame with anti-unfirmly closing function Empty cable, Authorization Notice No.: the patent of CN203325538U, including as self-supporting line steel wire (1), eight be coated with polyethylene The copper conductor (2) of layer (21) and red oversheath body (3)；Eight copper conductors (2) are twisted two-by-two forms four pairs as information The twisted wire of communication is to (4), and the first twisted wire of the four twisted pair wires centering is to (41), the second twisted wire to (42), third twisted wire to (43) (44) are arranged successively counterclockwise and are twisted with the 4th twisted wire and form conductive cable core (5)；One polyester belt (6) is around being wrapped in the conduction Cable core (5) outer surface, an inner restrictive coating (7) are extruded in the polyester belt (6) outer surface；It is described red oversheath body (3) include First sub- sheath (31) and the second sub- sheath (32) connect between the first sub- sheath (31) and the second sub- sheath (32) by one Muscle portion (33) connection, the first sub- sheath (31) are coated on the inner restrictive coating (7) outer surface, the second sub- sheath (32) It is coated on the steel wire (1) outer surface；Title are as follows: the anti-unfirmly closing photoelectricity composite cable of Self-bearing-type overhead, Authorization Notice No.: The patent of CN203260336U, it includes aluminum conductor, red PE pe sheath layer, PBT Loose tube, metal reinforcement, steel strand Line, PE sheath, metal compound belt, red PE protective cover material, it is characterised in that: optical fiber carries out pine set protection and is made into PBT Loose tube (3), filler is filled in PBT Loose tube (3)；PBT Loose tube (3) is centered around metal reinforcement (4) outside by twisted, stranding It is the metal compound belt (7) of longitudinal wrap armouring outside cable core afterwards, outside is equipped with red PE protective cover material after metal compound belt (7) armouring (2), the red PE pe sheath layer (2) of aluminum conductor (1), steel strand wires (5), PE sheath (6), they are mounted side by side on red In PE pe sheath layer (2)；Title are as follows: Self-bearing type bird-pecking-proof overhead integrated leading-in optical cable, Authorization Notice No.: The patent of CN202217541U, it include center reinforcemen, feed line, material water-proof material in cable, band, communication metal wire to, Moisture-proof layer, the Loose tube containing optical fiber, sheath, steel strand wires, Loose tube (10) or other light units containing optical fiber are reinforced around center Part (2) is twisted, and outside is band (6) and moisture-proof layer (8), it is characterised in that: feed line (4) and communication enclose (7) with metal wire It is twisted around center reinforcemen (2), have material water-proof material in cable (5) in band (6), is the red poly- second sheath of 8 fonts outside moisture-proof layer (8) (11), steel strand wires (12) are cased in the minor diameter set of 8 font red pe sheaths (11)；Above-mentioned patent, makes bar none Cable outermost layer is all or part of red or other colors, takes the photograph birds for prestige, it is applicant's understanding that only the color of sheath is red Color becomes distinguishing feature, should not become utility model patent first, because it is not the shape and knot of patent protection Structure；Secondly, red or other colors be also not for all forest zone birds can prestige take the photograph, conversely, because cable is having wind When can swing or shake, most of birds be mistaken for spend pink bollworm son, therefore, eye-catching cable is easier to be attacked by birds It hits, therefore the failure rate for causing cable to occur by unfirmly closing is higher；Title are as follows: a kind of anti-unfirmly closing All Dielectric self-support, authorization Notification number: the patent of CN203054288U, it includes optical fiber, Loose tube, fiber paste, center reinforcemen, sheath, aramid layers, outside Sheath, the Loose tube (3) containing optical fiber (1) are centered around around center reinforcemen (4), are had fiber paste (2) in Loose tube (3), pine set It manages (3) to be wrapped up by bundle yarn (6), between sheath (7) and Loose tube (3), has cable core filler (5), it is characterised in that: aramid layers (8) it is evenly distributed in around sheath (7), last outer jacket (9) uses nylon sheath wire material；The cost of nylon sheath wire material itself It is 15-20 times of polyethylene sheath material, moreover, process velocity is extremely slow, product qualified rate is only 50% or so, and one-pass molding adds Work thickness can only be in 0.8mm hereinafter, repeatedly processing is needed to can be only achieved the anti-requirement for pecking needs；Title are as follows: the anti-bird of termite-resistant rodent-resistant Peck communication cable, Authorization Notice No.: the patent of CN201094125Y, including cable core (1), cable core (1) is by several to band (21) line forms (2), and line is twisted (2) by the insulating layer (23) of two conductors (22) and conductor (22) outside, special Sign is: the cable core (1) is successively arranged band (3), aluminium strip (4) and high molecular weight high density polyolefin jacket from the inside to the outside outside (5)；Title are as follows: anti-unfirmly closing communication cable, Authorization Notice No.: the patent of CN201017714Y, including core, polyethylene insulation Layer, polyester wrapping layer, plastic-aluminum shielding band, polyethylene sheath, it is characterised in that: be successively surrounded by outside core polyethylene layer, Polyester wrapping layer, plastic-aluminum shield band, polyethylene sheath, armor, polyethylene outer sheath.More one layers of the outside of this patent is coated with The steel band of preserver, the small high molecular polythene of the moisture vapor transmission coefficient that more one layers thicker of outermost, to make prolonging for cable life One times or more is grown；And when electric field strength is higher, shielding character improves by about one time than original cable；In above-mentioned patent, outside Layer uses high density or macromolecule polyolefin jacket, is in the prior art conventional material, facts proved that, it is extremely difficult to it plays and effectively supports The effect of anti-birds invasion.For this purpose, user expects that there is the anti-of more preferable effect to peck cable, prevent pecking optical cable appearance.

Summary of the invention

To solve the above-mentioned problems, an object of the present invention is to disclose a kind of anti-unfirmly closing optical cable；The purpose of the present invention it Second is that the production method of this kind of anti-unfirmly closing optical cable；They adopt the following technical solutions to realize.

In embodiment 1 of the invention, anti-unfirmly closing optical cable, it include be distributed in more Loose tubes 2 except reinforcer 3, Protective layer 4 except Loose tube, the sheath 5 except protective layer, the oversheath 7 except sheath, every An optical fiber 1 is included at least in Loose tube, it is characterised in that have one to prevent pecking layer 6 between sheath and oversheath, it is described It is anti-to peck layer by weight, it is made of following raw material: 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；Diameter is 10~80 μm, length/diameter ratio 5 ~10 ultra-fine steel fibre and length be 0.05~0.2mm, the glass fibre that diameter is 0.03~0.3mm and diameter be 6.5~ 260 μm, the silica optical fiber that length is 0.03~0.3mm: 40~60 parts；EVA hot-melt adhesive: 5~10 parts；Model 1010 Cable jacket antioxidant: 3~5 parts；Aluminium hydroxide: 15~25 parts；Paraffin: 3~9 parts；Carbon black master batch: 5~10 parts；It is described Ultra-fine steel fibre, glass fibre, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~8), the titanium dioxide Silicon optical fiber be by only include fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing fibre core, The slim composition of the Communication ray of covering, coat and coloring 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 optical fiber, multimode fibre are constituted.

In embodiment 2 of the invention, anti-unfirmly closing optical cable, it includes at least one pine set being distributed in except reinforcer 3 Pipe 2 and the big gasket for packing 21 of at least one, the protective layer 4 except Loose tube and big gasket for packing, except protective layer in Sheath 5, the oversheath 7 except sheath, every Loose tube is interior to include at least an optical fiber 1, it is characterised in that interior Have one to prevent pecking layer 6 between sheath and oversheath.

In embodiment 3 of the invention, anti-unfirmly closing optical cable, it include be distributed in more Loose tubes 2 except reinforcer 3, Small gasket for packing 22 in the external series gap of adjacent Loose tube, is located at the protective layer 4 except Loose tube and small gasket for packing Sheath 5 except protective layer, the oversheath 7 except sheath, every Loose tube is interior to include at least an optical fiber 1, the optical fiber is located among fibre ribbon, and fibre ribbon is located in Loose tube, it is characterised in that between sheath and oversheath Prevent pecking layer 6 with one.

Anti- unfirmly closing optical cable, it includes at least one Loose tube 2 and the big filling of at least one being distributed in except reinforcer 3 Rope, in the external series gap of adjacent Loose tube or in the external series gap of adjacent big gasket for packing or adjacent Loose tube and big filling Small gasket for packing in the external series gap of rope, is located at protective layer at the protective layer 4 except Loose tube and big gasket for packing and small gasket for packing Except sheath 5, the oversheath 7 except sheath includes at least an optical fiber 1 in every Loose tube, described Optical fiber is located among fibre ribbon, and fibre ribbon is located in Loose tube, it is characterised in that has one between sheath and oversheath It is anti-to peck layer 6.

In embodiment 4 of the invention, anti-unfirmly closing optical cable, it include Loose tube 2, the water blocking layer 8 except Loose tube, Protective layer 4 except water blocking layer, the reinforcer 3 except protective layer, the outer shield except reinforcer and protective layer Set 7, includes at least an optical fiber 1 in Loose tube, optical fiber be it is with the formal distribution of bulk in Loose tube or In the fibre ribbon being placed in Loose tube, it is characterised in that have one to prevent pecking layer 6 between protective layer and oversheath.

In embodiment 5 of the invention, anti-unfirmly closing optical cable, it includes Loose tube 2, is located at except Loose tube and by Loose tube Integral coating live multi reinforcements 3, by the securing wrapping layer 9 of multi reinforcements, the sheath 5 except wrapping layer, Oversheath 7 except sheath, Loose tube is interior to include at least an optical fiber 1, and optical fiber is in the form of bulk It is distributed in Loose tube or in the fibre ribbon being placed in Loose tube, it is characterised in that the sheath and outer shield Have one to prevent pecking layer 6 between set.

Anti- unfirmly closing optical cable described above, it is characterised in that the material of the wrapping layer is that polyester pricks yarn or other has one Determine the yarn substance of intensity, it is coated on outside multi reinforcements by way of spiral winding, and multi reinforcements position is made It is relatively fixed.

Anti- unfirmly closing optical cable described above, it is characterised in that the material of the reinforcer is that steel wire or glass fiber reinforcement are moulded Expect bar.

Anti- unfirmly closing optical cable described above, it is characterised in that the material of the Loose tube is polybutylene terephthalate (PBT) Or modified polypropene.

Anti- unfirmly closing optical cable described above, it is characterised in that the material of the sheath is low density polyethylene (LDPE) or middle density Polyethylene or high density polyethylene (HDPE).

Anti- unfirmly closing optical cable described above, it is characterised in that the material of the oversheath is low density polyethylene (LDPE) or middle density Polyethylene or high density polyethylene (HDPE) or nylon.

Anti- unfirmly closing optical cable described above, it is characterised in that the optical fiber is single mode or multimode fibre, and into one Walk its model of ground G.652 type or G.655 type or G.657 type or A1a type or A1b type.

Anti- unfirmly closing optical cable described above, it is characterised in that the material of the water blocking layer is waterstop or water blocking yarn.

Anti- unfirmly closing optical cable described above, it is characterised in that the material of the big gasket for packing is polypropylene or polyethylene or gathers The mixture of propylene and polyethylene.

Anti- unfirmly closing optical cable described above, it is characterised in that the material of the small gasket for packing is polypropylene or polyethylene or gathers The mixture of propylene and polyethylene.

Anti- unfirmly closing optical cable described above, it is characterised in that there is the interior filler that blocks water in the Loose tube, inside block water Filler is ointment or water-proofing powder or water blocking yarn.

Anti- unfirmly closing optical cable described above, it is characterised in that filled with the filling that blocks water outside in the outer gap of the Loose tube Substance, the filler that blocks water outside are ointment or water-proofing powder or water blocking yarn.

The production method of anti-unfirmly closing optical cable in embodiment 1 of the present invention, it is characterised in that it is comprised the steps of:

Step 1: the step of production colored optical fiber: by naked colouring optical fibres at the colored optical fiber of different colours；

Step 2: production Loose tube the step of: 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, makes length pine set of the colored optical fiber in Loose tube 1.002~1.015 times of length of tube, the material of Loose tube are polybutylene terephthalate (PBT) or modified polypropene, production pine Loose tube extrusion molding special color master batch is added when casing in the material of Loose tube；It is repeated multiple times, form the pine of more different colours Casing；

Step 3: the step of production optical cable core: will second step prepared more Loose tubes, the reinforcer purchased Stranding is carried out in SZ stranding machine, keeps reinforcer centrally located, and more Loose tubes are located at except reinforcer, and Loose tube SZ is twisted The pitch of conjunction is 9~18 times of the sum of reinforcer and Loose tube diameter；

Step 4: the step of production sheath: steel band or aluminium strip material are first longitudinally coated on to the optical cable of third step formation Protective layer is formed outside cable core, then extrusion molding low density polyethylene (LDPE) or medium density polyethylene or high-density polyethylene material outside protective layer Formed sheath, sheath with a thickness of 0.8~2.0mm；

Step 5: production is anti-the step of pecking layer: by sheath extruding machine outside the sheath that the 4th step is formed extrusion molding thickness Anti- for 1.0~3.0mm thickness pecks layer, it is described it is anti-peck layer by weight, what is be made of following raw material anti-pecks layer: middle 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；The ultra-fine steel fibre and length that diameter is 10~80 μm, length/diameter ratio is 5~10 be 0.05~0.2mm, diameter The silica optical fiber that glass fibre and diameter for 0.03~0.3mm are 6.5~260 μm, length is 0.03~0.3mm: 40 ~60 parts；EVA hot-melt adhesive: 5~10 parts；The cable jacket antioxidant of model 1010: 3~5 parts；Aluminium hydroxide: 15~ 25 parts；Paraffin: 3~9 parts；Carbon black master batch: 5~10 parts；The weight of the ultra-fine steel fibre, glass fibre, silica optical fiber Portion rate is (1~2): (1~2): (4~8), and the silica optical fiber is by only including fibre core or containing fibre core and covering The slim composition of Communication ray either containing fibre core, covering and coat or containing fibre core, covering, coat and coloring layer, The Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type single mode optical fiber, in multimode fibre extremely A kind of few composition；

Step 6: the step of production oversheath: anti-pecking outside layer extrusion molding cladding what the 5th step was formed by sheath extruding machine Jacket material, oversheath is with a thickness of 1.4~3.0mm；The material of oversheath be low density polyethylene (LDPE) or medium density polyethylene or High density polyethylene (HDPE).

The production method of anti-unfirmly closing optical cable in embodiment 2 of the present invention, it is characterised in that it is comprised the steps of:

Step 3: the step of making big gasket for packing: by the polypropylene of polypropylene or polyethylene or 85% weight percent with The mixture of the polyethylene of 15% weight percent is put into 60 extruding machine of φ 45 or φ, and extrusion molding stretches to form diameter and second step The equally big big gasket for packing of middle gained Loose tube；

Step 4: the step of production optical cable core: will second step prepared more Loose tubes, the reinforcement purchased Big gasket for packing obtained carries out stranding in SZ stranding machine in part, third step, keeps reinforcer centrally located, more Loose tubes And big gasket for packing is located at except reinforcer, SZ twisted pitch is 9~18 times of the sum of reinforcer and Loose tube diameter；

Step 5: the step of production sheath: steel band or aluminium strip material are first longitudinally coated on to the optical cable of the 4th step formation Protective layer is formed outside cable core, then extrusion molding low density polyethylene (LDPE) or medium density polyethylene or high-density polyethylene material outside protective layer Formed sheath, sheath with a thickness of 0.8~2.0mm；

Step 6: production is anti-the step of pecking layer: by sheath extruding machine outside the sheath that the 5th step is formed extrusion molding thickness Anti- for 1.0~3.0mm thickness pecks layer, it is described it is anti-peck layer by weight, what is be made of following raw material anti-pecks layer: middle 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；The ultra-fine steel fibre and length that diameter is 10~80 μm, length/diameter ratio is 5~10 be 0.05~0.2mm, diameter The silica optical fiber that glass fibre and diameter for 0.03~0.3mm are 6.5~260 μm, length is 0.03~0.3mm: 40 ~60 parts；EVA hot-melt adhesive: 5~10 parts；The cable jacket antioxidant of model 1010: 3~5 parts；Aluminium hydroxide: 15~ 25 parts；Paraffin: 3~9 parts；Carbon black master batch: 5~10 parts；The weight of the ultra-fine steel fibre, glass fibre, silica optical fiber Portion rate is (1~2): (1~2): (4~8), and the silica optical fiber is by only including fibre core or containing fibre core and covering The slim composition of Communication ray either containing fibre core, covering and coat or containing fibre core, covering, coat and coloring layer, The Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type single mode optical fiber, in multimode fibre extremely A kind of few composition；

Step 7: the step of production oversheath: anti-pecking outside layer extrusion molding cladding what the 6th step was formed by sheath extruding machine Jacket material, oversheath is with a thickness of 1.4~3.0mm；The material of oversheath be low density polyethylene (LDPE) or medium density polyethylene or High density polyethylene (HDPE).

The production method of anti-unfirmly closing optical cable in embodiment 4 of the present invention, it is characterised in that it is comprised the steps of:

Step 2: production Loose tube the step of: 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, makes length pine set of the colored optical fiber in Loose tube 1.002~1.015 times of length of tube, the material of Loose tube are polybutylene terephthalate (PBT) or modified polypropene, production pine Loose tube extrusion molding special color master batch is added when casing in the material of Loose tube；

Step 3: production is anti-the step of pecking layer: first taking waterstop or the yarn material that blocks water is coated on the pine set of second step formation Water blocking layer is formed except pipe；It takes steel band or aluminium strip to be longitudinally coated on except water blocking layer again and forms protective layer；Two reinforcements are taken to put again It is placed on except protective layer；Then by sheath extruding machine outside protective layer and reinforcer extrusion molding with a thickness of 1.0~3.0mm thickness It is anti-peck layer, it is described it is anti-peck layer by weight, what is be made of following raw material anti-pecks layer: medium density polyethylene or low-density are poly- Ethylene 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；Diameter is 10 ~80 μm, length/diameter ratio be 5~10 ultra-fine steel fibre and length is 0.05~0.2mm, diameter is 0.03~0.3mm's The silica optical fiber that glass fibre and diameter are 6.5~260 μm, length is 0.03~0.3mm: 40~60 parts；EVA hot melt Glue: 5~10 parts；The cable jacket antioxidant of model 1010: 3~5 parts；Aluminium hydroxide: 15~25 parts；Paraffin: 3~9 Part；Carbon black master batch: 5~10 parts；The ultra-fine steel fibre, glass fibre, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~8), the silica optical fiber are by only comprising fibre core or containing fibre core and covering or containing fibre core, packet Layer and coat or the slim composition of Communication ray containing fibre core, covering, coat and coloring layer, the Communication ray is slim to be G.652, G.653, G.654, G.655, G.656, G.657 at least one of type single mode optical fiber, multimode fibre are constituted；Its In, two reinforcements are to place in protective layer external symmetry and minimum range between reinforcer and protective layer is 0.2mm, are reinforced Part is 0.4mm away from the anti-minimum range for pecking layer outer rim；

Step 4: the step of production oversheath: anti-pecking outside layer extrusion molding cladding what third step was formed by sheath extruding machine Jacket material；The material of oversheath is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or nylon 12；When When the material of oversheath is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE), oversheath with a thickness of 1.0~ 3.0mm；When the material of oversheath is nylon 12, oversheath is with a thickness of 0.4~0.8mm.

In the present invention, due to have it is anti-peck layer, anti-layer of pecking with special formula, on the one hand its can by extruding machine into Row extrusion molding, easy to process, speed of production is fast, and it is 25mm cable below and optical cable, speed that diameter is produced on 90 extruding machine of φ Reach 60 ms/min or more, and product qualified rate is high, since anti-peck has ultra-fine steel fibre and glass fibre and titanium dioxide in layer Silicon optical fiber stabs performance with extremely strong, birds peck hit first time after, its puff will be injured, therefore do not peck again The desire hit, by the use in nearly 3 years forest zones, does not have generation because birds peck bad optical cable again so that cable is effectively protected And the accident for interrupting letter occurs；Meanwhile anti-layer of pecking of the invention is with stronger anti-side pressure and impact resistance；It is anti-to peck layer tool There are excellent extrusion processing performance and environmental performance.

The present invention is easy to make, does not need to add expensive equipment.

The present invention have it is following main the utility model has the advantages that it is easy to manufacture, anti-peck effect is good, speed of production is fast, product qualified rate is high, More resistant to pressure and more resistant to impact.

Detailed description of the invention

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

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

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

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

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

Specific embodiment

Embodiment 1 of the present invention to embodiment 5 is the embodiment of anti-unfirmly closing optical cable and preparation method thereof.

Embodiment 1

Referring to Fig.1, anti-unfirmly closing optical cable, it include four Loose tubes 2 being distributed in except reinforcer 3, be located at Loose tube it Outer protective layer 4, the sheath 5 except protective layer, the oversheath 7 except sheath include in every Loose tube Six roots of sensation optical fiber 1, it is characterised in that have one to prevent pecking layer 6 between sheath and oversheath, it is described to prevent pecking layer by weight, It is made of following raw material: medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE): 50~80 parts；The trade mark is 617 Or the epoxy resin that the trade mark is 677: 10~20 parts；The ultra-fine steel fibre that diameter is 10~80 μm, length/diameter ratio is 5~10 It is 6.5~260 μm with length is 0.05~0.2mm, diameter is 0.03~0.3mm glass fibre and diameter, length 0.03 The silica optical fiber of~0.3mm: 40~60 parts；EVA hot-melt adhesive: 5~10 parts；The cable jacket of model 1010 is with anti-oxidant Agent: 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 Fiber, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~8), the silica optical fiber are by only wrapping Containing fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing fibre core, covering, coat and The slim composition of the Communication ray of chromatograph, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type What at least one of single mode optical fiber, multimode fibre were constituted.

Certainly, Loose tube described in this embodiment can be more, include at least a light guide fibre in every Loose tube Dimension.

The production method of anti-unfirmly closing optical cable, it is characterised in that it is comprised the steps of:

Embodiment 2

See Fig. 2, anti-unfirmly closing optical cable, it includes four Loose tubes 2 and a big gasket for packing being distributed in except reinforcer 3 21, the protective layer 4 except Loose tube and big gasket for packing, the sheath 5 except protective layer, except sheath Oversheath 7, every Loose tube is interior to include at least an optical fiber 1, it is characterised in that has one between sheath and oversheath Prevent pecking layer 6, it is described to prevent pecking layer by weight, it is made of following raw material: medium density polyethylene or low density polyethylene (LDPE) or height Density polyethylene: 50~80 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677: 10~20 parts；Diameter is 10~80 μm, grows Degree/diameter than the ultra-fine steel fibre and length for 5~10 is 0.05~0.2mm, the glass fibre that diameter is 0.03~0.3mm and The silica optical fiber that diameter is 6.5~260 μm, length is 0.03~0.3mm: 40~60 parts；EVA hot-melt adhesive: 5~10 parts； The cable jacket antioxidant of model 1010: 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, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~ 8), the silica optical fiber is by only including fibre core or containing fibre core and covering or containing fibre core, covering and coat Or the slim composition of Communication ray containing fibre core, covering, coat and coloring 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 optical fiber, multimode fibre are constituted.

Certainly, Loose tube described in this embodiment can be more, at least one；One is included at least in every Loose tube Root optical fiber；Big gasket for packing at least one.

The production method of anti-unfirmly closing optical cable in this embodiment, it is characterised in that it is comprised the steps of:

Embodiment 3

See Fig. 3, anti-unfirmly closing optical cable, it includes four Loose tubes 2 being distributed in except reinforcer 3, positioned at adjacent pine Small gasket for packing 22 in the external series gap of casing, the protective layer 4 except Loose tube and small gasket for packing, except protective layer Sheath 5, the oversheath 7 except sheath, interior every Loose tube includes ten six roots of sensation optical fibers 1, the optical fiber Among fibre ribbon, fibre ribbon is located in Loose tube, it is characterised in that and have one to prevent pecking layer 6 between sheath and oversheath, It is described to prevent pecking layer by weight, it is made of following raw material: medium density polyethylene or low density polyethylene (LDPE) or high-density polyethylene Alkene: 50~80 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677: 10~20 parts；Diameter is 10~80 μm, length/diameter Than the ultra-fine steel fibre and length for 5~10 be 0.05~0.2mm, the glass fibre that diameter is 0.03~0.3mm and diameter are 6.5~260 μm, the silica optical fiber that length is 0.03~0.3mm: 40~60 parts；EVA hot-melt adhesive: 5~10 parts；Model 1010 cable jacket antioxidant: 3~5 parts；Aluminium hydroxide: 15~25 parts；Paraffin: 3~9 parts；Carbon black master batch: 5~10 Part；The ultra-fine steel fibre, glass fibre, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~8), institute Stating silica optical fiber is by only including fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing Formed by the Communication ray of fibre core, covering, coat and coloring 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 optical fiber, multimode fibre are constituted.

Certainly, Loose tube described in this embodiment can be more, at least one；One is included at least in every Loose tube Root optical fiber.

Certainly, the optical cable in this embodiment, can also be as embodiment 2, anti-unfirmly closing optical cable, it includes to be distributed in At least one Loose tube 2 and the big gasket for packing of at least one except reinforcer 3, in the external series gap of adjacent Loose tube or phase Small gasket for packing in the external series gap of adjacent big gasket for packing or in the external series gap of adjacent Loose tube and big gasket for packing is located at Loose tube And the protective layer 4 except big gasket for packing and small gasket for packing, the sheath 5 except protective layer, it is outer except sheath Sheath 7, every Loose tube is interior to include at least an optical fiber 1, and the optical fiber is located among fibre ribbon, and fibre ribbon is located at In Loose tube, it is characterised in that have between sheath and oversheath one it is anti-peck layer 6, it is described it is anti-peck layer by weight, by with Lower raw material are constituted: medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE): 50~80 parts；The trade mark is 617 or board Number be 677 epoxy resin: 10~20 parts；The ultra-fine steel fibre and length that diameter is 10~80 μm, length/diameter ratio is 5~10 Degree be the glass fibre that 0.05~0.2mm, diameter are 0.03~0.3mm and diameter be 6.5~260 μm, length be 0.03~ The silica optical fiber of 0.3mm: 40~60 parts；EVA hot-melt adhesive: 5~10 parts；The cable jacket of model 1010 is with anti-oxidant Agent: 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 Fiber, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~8), the silica optical fiber are by only wrapping Containing fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing fibre core, covering, coat and The slim composition of the Communication ray of chromatograph, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type What at least one of single mode optical fiber, multimode fibre were constituted.

Anti- unfirmly closing optical cable in this embodiment, production method are referred to embodiment 1 and put example 2 in fact, only not It crosses and has coloured after the completion mostly one of fibre ribbon making step, by colored optical fiber and with fibre ribbon is formed, then in the shape of Loose tube At in the process, fibre ribbon is placed in Loose tube.

When anti-unfirmly closing fiber optic cable production in this embodiment, when having small gasket for packing, in SZ stranding, small gasket for packing is placed on In the external series gap of adjacent Loose tube or in the external series gap of adjacent big gasket for packing or adjacent Loose tube and big gasket for packing it is outer In gap.

Embodiment 4

See Fig. 4, anti-unfirmly closing optical cable, it include Loose tube 2, the water blocking layer 8 except Loose tube, be located at water blocking layer it Outer protective layer 4, the reinforcer 3 except protective layer, the oversheath 7 except reinforcer and protective layer, in Loose tube Comprising 12 optical fibers 1, optical fiber is with the formal distribution of bulk in Loose tube or positioned at being placed on loose set In fibre ribbon in pipe, it is characterised in that have one to prevent pecking layer 6 between protective layer and oversheath, reinforcer, which is located at, to be prevented pecking layer In, described to prevent pecking layer by weight, be made of following raw material: medium density polyethylene or low density polyethylene (LDPE) or high density are poly- Ethylene: 50~80 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677: 10~20 parts；Diameter is 10~80 μm, length/straight Diameter than the ultra-fine steel fibre and length for 5~10 is 0.05~0.2mm, the glass fibre and diameter that diameter is 0.03~0.3mm The silica optical fiber for being 0.03~0.3mm for 6.5~260 μm, length: 40~60 parts；EVA hot-melt adhesive: 5~10 parts；Model Cable jacket antioxidant for 1010: 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, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~8), The silica optical fiber be by only include fibre core or containing fibre core and covering or containing fibre core, covering and coat or The slim composition of Communication ray containing fibre core, covering, coat and coloring 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 optical fiber, multimode fibre are constituted.

Certainly, an optical fiber is included at least in Loose tube described in this embodiment.

Embodiment 5

See Fig. 5, anti-unfirmly closing optical cable, what it was lived comprising Loose tube 2, except Loose tube and by Loose tube integral coating Multi reinforcements 3, by the securing wrapping layer 9 of multi reinforcements, the sheath 5 except wrapping layer, be located at sheath it Outer oversheath 7, interior Loose tube includes 12 optical fibers 1, and optical fiber is the formal distribution with bulk in Loose tube Or in the fibre ribbon being placed in Loose tube, it is characterised in that have between the sheath and oversheath one anti- Peck layer 6, described to prevent pecking layer by weight, be made of following raw material: medium density polyethylene or low density polyethylene (LDPE) are highly dense Degree polyethylene: 50~80 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677: 10~20 parts；Diameter is 10~80 μm, grows Degree/diameter than the ultra-fine steel fibre and length for 5~10 is 0.05~0.2mm, the glass fibre that diameter is 0.03~0.3mm and The silica optical fiber that diameter is 6.5~260 μm, length is 0.03~0.3mm: 40~60 parts；EVA hot-melt adhesive: 5~10 parts； The cable jacket antioxidant of model 1010: 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, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~ 8), the silica optical fiber is by only including fibre core or containing fibre core and covering or containing fibre core, covering and coat Or the slim composition of Communication ray containing fibre core, covering, coat and coloring 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 optical fiber, multimode fibre are constituted.

Step 3: the step of production wrapping layer: first forming the multi reinforcements integral coating that buying obtains in second step Loose tube outside, multi reinforcements coat in such a way that spiral is twisted, and the twisted pitch of spiral is that 100~300 times of reinforcers are straight Diameter, reinforcer are steel wire or fiberglass reinforced plastics；Then the polyester bundle yarn or other with some strength buying obtained Yarn substance be coated on outside reinforcer with 20~50mm pitch spiral winding and form wrapping layer；

Step 4: the step of production sheath: by low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) material Material extrusion molding is coated on outside the wrapping layer of third step formation and forms sheath, sheath with a thickness of 0.8~2.0mm；

Step 6: the step of production oversheath: anti-pecking outside layer extrusion molding cladding what the 5th step was formed by sheath extruding machine Jacket material；The material of oversheath is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or nylon 12；When When the material of oversheath is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE), oversheath with a thickness of 1.0~ 3.0mm；When the material of oversheath is nylon 12, oversheath is with a thickness of 0.4~0.8mm.

Anti- unfirmly closing optical cable described in any of the above-described embodiment, it is characterised in that the anti-optimal embodiment for pecking layer Are as follows: by weight, what is be made of following raw material anti-pecks layer: medium density polyethylene or low density polyethylene (LDPE) or high-density polyethylene Alkene: 50 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677: 10 parts；Diameter is 10~80 μm, length/diameter ratio is 5~10 Ultra-fine steel fibre and length is 0.05~0.2mm, diameter is 0.03~0.3mm glass fibre and diameter be 6.5~260 μ M, length is the silica optical fiber of 0.03~0.3mm: 40 parts；EVA hot-melt adhesive: 5 parts；The cable jacket of model 1010 is used anti- Oxidant: 3 parts；Aluminium hydroxide: 15 parts；Paraffin: 3 parts；Carbon black master batch: 5 parts；The ultra-fine steel fibre, glass fibre, titanium dioxide The weight fraction ratio of silicon optical fiber is (1~2): (1~2): (4~8), and the silica optical fiber is by only including fibre core or containing There are fibre core and covering or the Communication ray containing fibre core, covering and coat or containing fibre core, covering, coat and coloring layer Slim composition, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type single mode optical fiber, multimode What at least one of optical fiber was constituted.

Anti- unfirmly closing optical cable described in any of the above-described embodiment, it is characterised in that the anti-suboptimum embodiment for pecking layer Are as follows: by weight, what is be made of following raw material anti-pecks layer: medium density polyethylene or low density polyethylene (LDPE) or high-density polyethylene Alkene: 80 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677: 20 parts；Diameter is 10~80 μm, length/diameter ratio is 5~10 Ultra-fine steel fibre and length is 0.05~0.2mm, diameter is 0.03~0.3mm glass fibre and diameter be 6.5~260 μ M, length is the silica optical fiber of 0.03~0.3mm: 60 parts；EVA hot-melt adhesive: 10 parts；The cable jacket of model 1010 is used Antioxidant: 5 parts；Aluminium hydroxide: 25 parts；Paraffin: 9 parts；Carbon black master batch: 10 parts；The ultra-fine steel fibre, glass fibre, two The weight fraction ratio of silica optical fibre be (1~2): (1~2): (4~8), the silica optical fiber be by only include fibre core or Person contains fibre core and covering or logical containing fibre core, covering and coat or containing fibre core, covering, coat and coloring layer Believe optical fiber body composition, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type single mode optical fiber, What at least one of multimode fibre was constituted.

Anti- unfirmly closing optical cable described in any of the above-described embodiment, it is characterised in that the anti-more excellent embodiment for pecking layer Are as follows: by weight, what is be made of following raw material anti-pecks layer: medium density polyethylene or low density polyethylene (LDPE) or high-density polyethylene Alkene: 65 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677: 15 parts；Diameter is 10~80 μm, length/diameter ratio is 5~10 Ultra-fine steel fibre and length is 0.05~0.2mm, diameter is 0.03~0.3mm glass fibre and diameter be 6.5~260 μ M, length is the silica optical fiber of 0.03~0.3mm: 50 parts；EVA hot-melt adhesive: 8 parts；The cable jacket of model 1010 is used anti- Oxidant: 4 parts；Aluminium hydroxide: 20 parts；Paraffin: 6 parts；Carbon black master batch: 7.5 parts；The ultra-fine steel fibre, glass fibre, dioxy The weight fraction ratio of SiClx optical fiber be (1~2): (1~2): (4~8), the silica optical fiber be by only include fibre core or Contain fibre core and covering or the communication containing fibre core, covering and coat or containing fibre core, covering, coat and coloring layer Optical fiber body composition, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type single mode optical fiber, more What at least one of mode fiber was constituted.

Anti- unfirmly closing optical cable described above, it is characterised in that the anti-medium density polyethylene or low density polyethylene pecked in layer Alkene or high density polyethylene (HDPE) can be pure medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE), be also possible to Cable medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE) finished product material.

Anti- unfirmly closing optical cable described above, it is characterised in that the material of the protective layer is steel band or aluminium strip.

In the present invention, due to have it is anti-peck layer, anti-layer of pecking with special formula, on the one hand its can by extruding machine into Row extrusion molding, easy to process, speed of production is fast, and it is 25mm cable below and optical cable, speed that diameter is produced on 90 extruding machine of φ Reach 60 ms/min or more, and product qualified rate is high, since anti-peck has ultra-fine steel fibre and glass fibre and titanium dioxide in layer Silicon optical fiber stabs performance with extremely strong, birds peck hit first time after, its puff will be injured, therefore do not peck again The desire hit, by the use in nearly 3 years forest zones, does not have generation because birds peck bad optical cable again so that cable is effectively protected And the accident for interrupting communication occurs；Meanwhile anti-layer of pecking of the invention is with stronger anti-side pressure and impact resistance.Extra-fine steel is fine Dimension or glass fibre can be bought on the market, and for the anti-silica optical fiber pecked in layer, light guide fibre can be purchased Dimension is rolled, is crushed, filtering acquisition, and light guide fibrous finished product can be not only used, and can also be used no covering or not coated Layer or without covering and the optical fiber fibre core or silica optical fiber core of coat and coloring layer, it might even be possible to use light guide Fiber waste product is rolled, is crushed, filtering acquisition, and achieving the purpose that give up utilizes, and reduces the pollution of optical fiber producer；In addition, this hair Substance and product in bright are not related to problem of environmental pollution.

In the present invention, when having protective layer, protective layer with it is anti-peck layer and resist pecking for birds jointly hit, when there is no protective layer, add Strong part and it is anti-peck layer and resist pecking for birds jointly hit, make optical cable it is anti-peck hit, impact, the performance in terms of pressure resistance greatly increases.

In the present invention, oversheath can not use expensive nylon as far as possible, cost can be made to decline to a great extent in this way, made The buying of user, maintenance overall cost are lower.

Certainly, the oversheath in the present invention can also use coloured sheath, such as red, yellow etc., preferably still Common black.

Applicant has made using comparison, light the anti-unfirmly closing optical cable in the application with the optical cable produced by the prior art Cable is all aerial laying, and the structure for all using embodiment 1 of the invention, oversheath is black and red, and 1#-4# indicates different It is anti-peck layer formula, 1# is maximum magnitude, wherein the weight fraction ratio of ultra-fine steel fibre, glass fibre, silica optical fiber For (1~2): (1~2): (4~8)；2# is optimal implementation formula, wherein ultra-fine steel fibre, glass fibre, silica optical fiber Weight fraction ratio be 1:1:8；3# is that suboptimum implements formula, wherein the weight of ultra-fine steel fibre, glass fibre, silica optical fiber Amount portion rate is 1:1:3；4# is more excellent implementation formula, wherein the parts by weight of ultra-fine steel fibre, glass fibre, silica optical fiber Number is than being 1:1:1；Control group is 5#, using the structure of embodiment 1, only its it is anti-peck layer, but oversheath With a thickness of embodiment 1 of the present invention oversheath thickness add it is anti-peck thickness degree, oversheath is red, and each serial number is same in Hunan Forest zone respectively uses 100 kilometers, obtains following data.

From upper table, it is apparent that using the present invention, due to the anti-effect for pecking layer, obtain power, communication transmission really Guarantee has been arrived, meanwhile, anti-peck in layer pecks best performance using more anti-of silica optical fiber content；Moreover, oversheath is When coloured, it is more subject to pecking for birds instead and hits.

Applicant has also carried out same comparative test to other embodiments, and test result is almost the same；In the present invention By test, performance is all higher than the minimum performance requirement of optical cable, the industry of cable jacket material and national standard, adds anti-layer of pecking Work function admirable.

The present invention is not limited to above-mentioned preferred forms, it should be understood that design of the invention can be by other various shapes Formula is implemented to use, they also fall in protection scope of the present invention.

Claims

1. a kind of anti-unfirmly closing optical cable, it include Loose tube, lived except Loose tube and by Loose tube integral coating more plus Strong part, by the securing wrapping layer of multi reinforcements, the sheath except wrapping layer, the outer shield except sheath Set, Loose tube is interior to include at least an optical fiber, and optical fiber is with the formal distribution of bulk in Loose tube or position Have one to prevent pecking layer in the fibre ribbon being placed in Loose tube, between the sheath and oversheath；It is characterized in that described Anti- unfirmly closing optical cable is manufactured by the inclusion of the method for following steps:

Step 2: production Loose tube the step of: 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, keeps length Loose tube of the colored optical fiber in Loose tube long 1.002~1.015 times of degree, the material of Loose tube are polybutylene terephthalate (PBT) or modified polypropene, make Loose tube When in the material of Loose tube be added Loose tube extrusion molding special color master batch；

Step 3: the step of production wrapping layer: the pine for first forming the multi reinforcements integral coating that buying obtains in second step Outside casing, multi reinforcements coat in such a way that spiral is twisted, and the twisted pitch of spiral is 100~300 times of reinforcer diameters, add Strong part is steel wire or fiberglass reinforced plastics；Then polyester buying obtained pricks yarn with 20~50mm pitch spiral winding packet It overlays on outside reinforcer and forms wrapping layer；

Step 4: the step of production sheath: low density polyethylene (LDPE) or medium density polyethylene or high-density polyethylene material are squeezed Modeling is coated on outside the wrapping layer of third step formation and forms sheath, sheath with a thickness of 0.8~2.0mm；

Step 5: production is anti-the step of pecking layer: by sheath extruding machine outside the sheath that the 4th step is formed extrusion molding with a thickness of 1.0 The anti-of~3.0mm thickness pecks layer, it is described it is anti-peck layer by weight, what is be made of following raw material anti-pecks layer: the middle poly- second of density Alkene 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；Diameter For 10~80 μm, length/diameter ratio be 5~10 ultra-fine steel fibre and length be 0.05~0.2mm, diameter be 0.03~ The silica optical fiber that the glass fibre and diameter of 0.3mm is 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, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~8), institute Stating silica optical fiber is by only including fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing Formed by the Communication ray of fibre core, covering, coat and coloring 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 optical fiber, multimode fibre；

Step 6: the step of production oversheath: being protected outside extrusion molding cladding outside layer by sheath extruding machine in anti-peck that the 5th step is formed 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 is with a thickness of 1.0~3.0mm； When the material of oversheath is nylon 12, oversheath is with a thickness of 0.4~0.8mm.

2. a kind of anti-unfirmly closing optical cable, it include Loose tube, lived except Loose tube and by Loose tube integral coating more plus Strong part, by the securing wrapping layer of multi reinforcements, the sheath except wrapping layer, the outer shield except sheath Set, Loose tube is interior to include at least an optical fiber, and optical fiber is with the formal distribution of bulk in Loose tube or position Have one to prevent pecking layer in the fibre ribbon being placed in Loose tube, between the sheath and oversheath；It is characterized in that described Anti- to peck layer by weight, what is be made of following raw material anti-pecks layer: medium density polyethylene or low density polyethylene (LDPE) or high density Polyethylene: 50~80 parts；The epoxy resin that the trade mark is 617 or the trade mark is 677: 10~20 parts；Diameter be 10~80 μm, length/ Diameter than the ultra-fine steel fibre and length for 5~10 is 0.05~0.2mm, the glass fibre that diameter is 0.03~0.3mm and straight The silica optical fiber that diameter is 6.5~260 μm, length is 0.03~0.3mm: 40~60 parts；EVA hot-melt adhesive: 5~10 parts；Type Number be 1010 cable jacket antioxidant: 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, silica optical fiber weight fraction ratio be (1~2): (1~2): (4~ 8), the silica optical fiber is by only including fibre core or containing fibre core and covering or containing fibre core, covering and coat Or the slim composition of Communication ray containing fibre core, covering, coat and coloring 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 optical fiber, multimode fibre.