CN106842462A

CN106842462A - A kind of anti-unfirmly closing optical cable and the method for making anti-unfirmly closing optical cable

Info

Publication number: CN106842462A
Application number: CN201710237642.7A
Authority: CN
Inventors: 沈群华
Original assignee: Individual
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: 2017-06-13
Anticipated expiration: 2035-03-10
Also published as: CN104614830A; CN106990495A; CN106842462B; CN106959496A; CN104614830B

Abstract

The invention belongs to technical field of cables, more particularly, to anti-unfirmly closing optical cable, it includes many Loose tubes, the overcoat outside Loose tube, the sheath outside overcoat being distributed in outside reinforcer, oversheath outside sheath, an optical fiber is comprised at least in every Loose tube, it is characterized in that have one to prevent pecking layer between sheath and oversheath, it is described to prevent that peck layer is made up 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 preparation method.The present invention has following main beneficial effect：Easily make, it is 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 anti-unfirmly closing optical cable and the method for making anti-unfirmly closing optical cable

The application is entitled：A kind of anti-unfirmly closing optical cable and preparation method thereof, the applying date：On 03 10th, 2015, application Number it is：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 technology

Be adapt to environment existence, be grown in the birds near forest zone mostly length have sharp puff, they can peck bad cable, Communications optical cable cable sheath and insulating barrier.In cable and communications optical cable, for the ease of identification, usual insulating barrier and Loose tube are with more Color is planted, after pipping sheath, the insulating barrier and Loose tube of shades of colour 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.The sheath that sleet passes through to have broken enters in cable Portion, in the course of time, causes the communication failure of unknown cause.Many forest land areas at home, such as Hunan, Yunnan, Zhejiang, Guilin Ground, has occurred and that repeatedly by the failure of the broken cable of unfirmly closing, causes immeasurable loss.

Therefore, the country has carried out substantial amounts of research.It is entitled：Anti- pecking 8-shaped photoelectrical composite cable, Authorization Notice No.： The patent of CN202041686U, is filled by sheath, copper cash 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 Around reinforcer, wrapped up by band, cable core filled composite is moisture-proof layer outside band in band, and they constitute cable core, with bag There is the copper conductor bed course sheath of copper conductor, they form 8-shaped sheath by sheath, and its sheath is red.Cable can effectively be protected When outdoor is built on stilts not by unfirmly closing；It is entitled：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, wire, painting plastic composite strip, insulating barrier and red PE sheaths, at the center of flame-retardant sheath material 6, both sides are reinforcers 5 to optical fiber 7, wire 4 by after the vertical bag of painting plastic composite strip 3 with it is fire-retardant Protective cover material 6 stranded rear 1 carries out outer shield with red PE sheaths together.This product is mainly used in connecting between mobile base station and launching tower Connect, connection in computer room, can reach avoid it is local have a power failure or batteries failure and he causes the effect of power-off of base station；Network is reduced to build If expense, it is to avoid secondary wiring, can also anti-unfirmly closing；It is entitled：Outdoor nonmetal bird pecking prevention aerial optical cable, Authorization Notice No.： The patent of CN202067003U, it includes optical fiber, Loose tube, fine cream, center reinforcemen, sheath, contains optical fiber（6）Loose tube （8）It is centered around center reinforcemen（2）Around, Loose tube（8）Inside there is fine cream（7）, Loose tube（8）By band（5）Wrapping, overcoat shield Set（9）, it is characterised in that：Band（5）Inside there is material water-proof material（4）, sheath（9）It is red pe sheath；It is entitled：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 Fill compound, reinforcer, optical fiber, pine set filled composite, Loose tube, band, moisture-proof layer and steel strand wires, optical fiber（7）Covered in pine Pipe（9）It is interior, Loose tube（9）Inside there is pine set filled composite（8）, Loose tube（9）And aluminum conductor（3）Around reinforcer（6）It is stranded Together by band（11）Wrapping, it is characterised in that：Band（11）There is moisture-proof layer outward（12）With 8 fonts red sheath（1）, it is small straight There are steel strand wires in the red sheath of footpath（13）；It is entitled：Anti- unfirmly closing self-bearing type butterfly leading in cable, Authorization Notice No.： The patent of CN202649559U, it include optical fiber, reinforcer and oversheath, reinforcer in optical fiber both sides, together by oversheath bag Wrap up in into butterfly, it is characterised in that：Oversheath（4）Side is also connected with equipped with wire reinforcement（1）Red sheath（5）；Title For：, Authorization Notice No.：The patent of CN202523458U, it is characterised in that：Loose tube and copper conductor are centered around around reinforcer, In Loose tube, they are all wrapped up by band, and outside is moisture-proof layer for optical fiber and pine set filled composite, it is characterised in that：Gear tide Layer（11）Outer sheath is red sheath；It is entitled：A kind of anti-unfirmly closing optical cable, Authorization Notice No.：The patent of CN203133348U, There is the fiber unit and center reinforcement collectively formed by optical fiber, fine cream, ferrule including cable core and oversheath, in cable core Part, gasket for packing, it is characterised in that bundle yarn layer and wrinkle steel belt layer are sequentially provided between cable core and oversheath, oversheath is red Sheath and yellow sheath are symmetrical arranged longitudinally twisted structure.Oversheath is symmetrical arranged longitudinal direction using red sheath and yellow sheath The structure of torsion, outer likeness in form is wrapped in the snake on optical cable, is afraid of bird pest, dare not fly to be gnawed in cable surface again and peck optical cable, makes light Cable is hardly damaged, and increases the service life；It is entitled：New anti-unfirmly closing colour code optical cable, Authorization Notice No.：CN203133349U's is special There is the fiber unit and center collectively formed by optical fiber, fine cream, ferrule in profit, including cable core and oversheath, cable core Reinforcer, gasket for packing, it is characterised in that bundle yarn layer, inner sheath and wrinkle steel belt layer are sequentially provided between cable core and oversheath, The structure of oversheath is the red sheath that longitudinal direction is equidistantly provided with several yellow colour codes；It is entitled：Frame with anti-unfirmly closing function Empty cable, Authorization Notice No.：The patent of CN203325538U, including as the steel wire of self-supporting line（1）, eight pieces be coated with polyethylene Layer（21）Copper conductor（2）With red oversheath body（3）；Eight copper conductors（2）It is stranded two-by-two to form four pairs as information The twisted wire pair of communication（4）, four twisted pair wire the first twisted wire pair of centering（41）, the second twisted wire pair（42）, the 3rd twisted wire pair（43） With the 4th twisted wire pair（44）It is arranged in order and stranded formation conductive cable core counterclockwise（5）；One polyester belt（6）Around being wrapped in the conduction Cable core（5）Outer surface, an inner restrictive coating（7）Extrude in the polyester belt（6）Outer surface；The red oversheath body（3）Including First sub- sheath（31）With the second sub- sheath（32）, the first sub- sheath（31）With the second sub- sheath（32）Between by one connect Muscle portion（33）Connection, the first sub- sheath（31）It is coated on the inner restrictive coating（7）Outer surface, the second sub- sheath（32） It is coated on the steel wire（1）Outer surface；It is entitled：The anti-unfirmly closing photoelectricity composite cable of Self-bearing-type overhead, Authorization Notice No.： The patent of CN203260336U, it includes that aluminum conductor, red PE pe sheaths layer, PBT Loose tubes, metal reinforcement, steel are twisted Line, PE sheaths, metal compound belt, red PE protective cover materials, it is characterised in that：Optical fiber carries out pine set protection and makes PBT Loose tubes （3）, PBT Loose tubes（3）Inside it is filled with filler；By stranded by PBT Loose tubes（3）It is centered around metal reinforcement（4）Outward, stranding It is the metal compound belt of vertical bag armouring outside cable core afterwards（7）, metal compound belt（7）Outside is equipped with red PE protective cover materials after armouring （2）, aluminum conductor（1）, steel strand wires（5）, PE sheaths（6）Red PE pe sheaths layer（2）, they are mounted side by side on red PE pe sheaths layer（2）It is interior；It is entitled：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, in cable material water-proof material, band, communication metal wire to, Moisture-proof layer, the Loose tube containing optical fiber, sheath, steel strand wires, the Loose tube containing optical fiber（10）Or other light units are strengthened around center Part（2）Stranded, outside is band（6）And moisture-proof layer（8）, it is characterised in that：Feed line（4）With communication metal wire pair（7）Enclose Around center reinforcemen（2）It is stranded, band（6）Inside there is material water-proof material in cable（5）, moisture-proof layer（8）It is outward the red poly- second sheath of 8 fonts （11）, 8 fonts red pe sheath（11）Minor diameter set in be cased with steel strand wires（12）；Above-mentioned patent, makes bar none Cable outermost layer is all or part of red or other colors, and birds are taken the photograph for prestige, it is applicant's understanding that only the color of sheath is red Color turns into distinguishing feature, utility model patent should not be turned into first, because it is not the shape and knot of patent protection Structure；Secondly, red or other colors nor for all of 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 pink bollworm son, therefore, eye-catching cable is more subject to attacking for birds Hit, therefore cause the fault rate that cable occurs by unfirmly closing higher；It is entitled：A kind of anti-unfirmly closing All Dielectric self-support, mandate Notification number：The patent of CN203054288U, it includes optical fiber, Loose tube, fine cream, center reinforcemen, sheath, aramid layers, outward Sheath, contains optical fiber（1）Loose tube（3）It is centered around center reinforcemen（4）Around, Loose tube（3）Inside there is fine cream（2）, pine set Pipe（3）By bundle yarn（6）Wrapping, sheath（7）With Loose tube（3）Between, there is cable core filler（5）, it is characterised in that：Aramid layers （8）It is evenly distributed in sheath（7）Around, last outer jacket（9）Using nylon sheath wire material；Nylon sheath wire material cost in itself 15-20 times of polyethylene sheath material, and, process velocity is extremely slow, product qualified rate only 50% or so, and one-shot forming adds Work thickness can only can be only achieved the anti-requirement for pecking needs in below 0.8mm, it is necessary to repeatedly process；It is entitled：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 some to band (21) line is constituted to (2), and insulating barrier (23) of the line to (2) by two conductors (22) and conductor (22) outward is stranded to be formed, and it is special Levy and be：The cable core (1) is sequentially provided with outward band (3), aluminium strip (4) and high molecular weight high density polyolefin jacket from the inside to the outside (5)；It is entitled：Anti- unfirmly closing communication cable, Authorization Notice No.：The patent of CN201017714Y, including core, polyethylene insulation Layer, polyester lapping layer, plastic-aluminum shielding band, polyethylene sheath, it is characterised in that：Core outside be surrounded by successively polyethylene layer, Polyester lapping layer, plastic-aluminum shielding band, polyethylene sheath, armor, polyethylene outer sheath.Many one layers of the outside of this patent scribbles The steel band of preserver, the moisture vapor transmission coefficient that many one layer thicker of outermost small high-molecular polythene, so that cable life prolongs More than one times is grown；And when electric-field intensity is higher, shielding character is improved by about one time than original cable；In above-mentioned patent, outward Layer employs high density or macromolecule polyolefin jacket, is in the prior art conventional material, fact proved, it is extremely difficult to play and effectively support The effect of anti-birds invasion and attack.Therefore, user expects that the anti-cable, anti-optical cable of pecking pecked with more preferable effect occurs.

The content of the invention

In order to solve the above 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 Two is this kind of preparation method of anti-unfirmly closing optical cable；They are realized using following technical scheme.

In embodiment of the invention 1, anti-unfirmly closing optical cable, it include be distributed in many Loose tubes 2 outside reinforcer 3, Overcoat 4 outside Loose tube, the sheath 5 outside overcoat, the oversheath 7 outside sheath, every An optical fiber 1 is comprised 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 up 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；A diameter of 10~80 μm, length/diameter ratio be 5 ~10 ultra-fine steel fibre and length be 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and a diameter of 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, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~8）, the titanium dioxide Silicon optical fiber be by only comprising fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing fibre core, The slim composition of Communication ray of covering, coat and dyed layer, the Communication ray it is slim for G.652, G.653, G.654, G.655, at least one composition G.656, G.657 in type single-mode fiber, multimode fibre.

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

In embodiment of the invention 3, anti-unfirmly closing optical cable, it include be distributed in many Loose tubes 2 outside reinforcer 3, Small gasket for packing 22 in the external series gap of adjacent Loose tube, the overcoat 4 outside Loose tube and small gasket for packing, it is located at Sheath 5 outside overcoat, the oversheath 7 outside sheath comprises at least an optical fiber in every Loose tube 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 at least one big filling being distributed in outside 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, the overcoat 4 outside Loose tube and big gasket for packing and small gasket for packing, positioned at overcoat Outside sheath 5, the oversheath 7 outside sheath comprises 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 have one between sheath and oversheath It is anti-to peck layer 6.

In embodiment of the invention 4, anti-unfirmly closing optical cable, it comprising Loose tube 2, the water blocking layer 8 outside Loose tube, Overcoat 4 outside water blocking layer, the reinforcer 3 outside overcoat, the outer shield outside reinforcer and overcoat Set 7, comprises at least an optical fiber 1 in Loose tube, optical fiber be 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 overcoat and oversheath.

In embodiment of the invention 5, anti-unfirmly closing optical cable, it is comprising Loose tube 2, outside Loose tube and by Loose tube Multi reinforcements 3 that integral coating is lived, by the securing wrapping layer 9 of multi reinforcements, the sheath 5 outside wrapping layer, An optical fiber 1 is comprised at least in oversheath 7 outside sheath, Loose tube, 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 pricks yarn or other for polyester has one Determine the yarn class material of intensity, it is coated on outside multi reinforcements by way of spiral winding, makes multi reinforcements position 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 Material 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 Midst 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 Midst density Polyethylene or high density polyethylene (HDPE) or nylon.

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

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 poly- 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 poly- The mixture of propylene and polyethylene.

Anti- unfirmly closing optical cable described above, it is characterised in that block water filler in having in the Loose tube, inside blocks 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 outer filling that blocks water in the outer gap of the Loose tube Material, the filler that blocks water outward is ointment or water-proofing powder or water blocking yarn.

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

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

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, makes length of the colored optical fiber in Loose tube for Loose tube is long 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；It is repeated multiple times, form many Loose tubes of different colours；

3rd step：The step of making optical cable core：Second step is made into many Loose tubes for obtaining, the reinforcer purchased in SZ Stranding is carried out in stranding machine, makes reinforcer centrally located, many Loose tubes are located at outside reinforcer, and Loose tube SZ is stranded Pitch is 9~18 times of reinforcer and Loose tube diameter sum；

4th step：The step of making sheath：Steel band or aluminium strip material are first longitudinally coated on the optical cable core of the 3rd step formation Outer formation overcoat, then formed in the outer extrusion molding low density polyethylene (LDPE) of overcoat or medium density polyethylene or high-density polyethylene material Sheath, the thickness of sheath is 0.8~2.0mm；

5th step：The step of making anti-peck layer：By sheath extruding machine, extrusion molding thickness is 1.0 outside the sheath that the 4th step is formed The anti-of~3.0mm thickness pecks layer, it is described it is anti-peck layer by weight, what is be made up of following raw material anti-pecks layer：The poly- second of Midst density Alkene 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 Part；A diameter of 10~80 μm, the ultra-fine steel fibre that length/diameter ratio is 5~10 and length are 0.05~0.2mm, a diameter of The glass fibre of 0.03~0.3mm and the silica optical fiber a diameter of 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 Part；Paraffin：3~9 parts；Carbon black master batch：5~10 parts；The ultra-fine steel fibre, glass fibre, the weight portion of silica optical fiber Counting ratio is（1~2）：（1~2）：（4~8）, the silica optical fiber be by only comprising fibre core or containing fibre core and covering or Person contains fibre core, covering and coat or the slim composition of the Communication ray containing fibre core, covering, coat and dyed layer, institute State Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 in type single-mode fiber, multimode fibre at least A kind of composition；

6th step：The step of making oversheath：Outer shield is coated in the anti-outer extrusion molding of layer of pecking that the 5th step is formed by sheath extruding machine Cover material, oversheath thickness is 1.4~3.0mm；The material of oversheath is low density polyethylene (LDPE) or medium density polyethylene or highly dense Degree polyethylene.

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

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

4th step：The step of making optical cable core：Second step is made into many Loose tubes for obtaining, the reinforcer purchased, the Obtained big gasket for packing carries out stranding in SZ stranding machines in three steps, makes reinforcer centrally located, many Loose tubes and big Gasket for packing is located at outside reinforcer, and SZ stranded pitch is reinforcer and 9~18 times of Loose tube diameter sum；

5th step：The step of making sheath：Steel band or aluminium strip material are first longitudinally coated on the optical cable core of the 4th step formation Outer formation overcoat, then formed in the outer extrusion molding low density polyethylene (LDPE) of overcoat or medium density polyethylene or high-density polyethylene material Sheath, the thickness of sheath is 0.8~2.0mm；

6th step：The step of making anti-peck layer：By sheath extruding machine, extrusion molding thickness is 1.0 outside the sheath that the 5th step is formed The anti-of~3.0mm thickness pecks layer, it is described it is anti-peck layer by weight, what is be made up of following raw material anti-pecks layer：The poly- second of Midst density Alkene 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 Part；A diameter of 10~80 μm, the ultra-fine steel fibre that length/diameter ratio is 5~10 and length are 0.05~0.2mm, a diameter of The glass fibre of 0.03~0.3mm and the silica optical fiber a diameter of 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 Part；Paraffin：3~9 parts；Carbon black master batch：5~10 parts；The ultra-fine steel fibre, glass fibre, the weight portion of silica optical fiber Counting ratio is（1~2）：（1~2）：（4~8）, the silica optical fiber be by only comprising fibre core or containing fibre core and covering or Person contains fibre core, covering and coat or the slim composition of the Communication ray containing fibre core, covering, coat and dyed layer, institute State Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 in type single-mode fiber, multimode fibre at least A kind of composition；

7th step：The step of making oversheath：Outer shield is coated in the anti-outer extrusion molding of layer of pecking that the 6th step is formed by sheath extruding machine Cover material, oversheath thickness is 1.4~3.0mm；The material of oversheath is low density polyethylene (LDPE) or medium density polyethylene or highly dense Degree polyethylene.

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

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, makes length of the colored optical fiber in Loose tube for Loose tube is long 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；Take again outside steel band or aluminium strip are longitudinally coated on water blocking layer and form overcoat；Two are taken again to strengthen placing 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, what is be made up of following raw material anti-pecks layer：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, length/diameter ratio are 5~10 ultra-fine steel fibre and length is 0.05~0.2mm, the glass fibers of a diameter of 0.03~0.3mm A diameter of 6.5~260 μm of peacekeeping, the silica optical fiber that 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 comprising fibre core or containing fibre core and covering or containing fibre core, covering and coating Layer or the Communication ray containing fibre core, covering, coat and dyed layer slim composition, the Communication ray it is slim for G.652, G.653, at least one composition G.654, G.655, G.656, G.657 in type single-mode fiber, multimode fibre；Wherein, two Reinforcer is that the minimum range in overcoat external symmetry placement and between reinforcer and overcoat is 0.2mm, and reinforcer is away from anti- The minimum range for pecking layer outer rim is 0.4mm；

4th step：The step of making oversheath：Outer shield is coated in the anti-outer extrusion molding of layer of pecking that the 3rd step is formed by sheath extruding machine 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.

In the present invention, due to pecking layer with anti-, anti-layer of pecking has special formula, and on the one hand it can be entered by extruding machine Row extrusion molding, easy to process, speed of production is fast, and the cable and optical cable of a diameter of below 25mm, speed are produced on the extruding machines of φ 90 More than 60 ms/min are reached, and product qualified rate is high, because anti-pecking in layer has ultra-fine steel fibre and glass fibre and titanium dioxide Silicon optical fiber, it has extremely strong performance of stabbing, and birds peck after hitting for the first time, will injure its puff, therefore do not peck again The desire hit so that cable is effectively protected, by the use in nearly 3 years forest zones, does not have generation because birds peck bad optical cable again 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 is excellent extrusion processing performance and environmental performance.

The present invention is easy to the equipment for making, need not adding costliness.

The present invention has following main beneficial effect：Easily make, it is 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.

Brief description of the drawings

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

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

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

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

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

Specific embodiment

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

Embodiment 1

See Fig. 1, anti-unfirmly closing optical cable, it is comprising four Loose tubes 2 being distributed in outside reinforcer 3, outside Loose tube Overcoat 4, the sheath 5 outside overcoat, the oversheath 7 outside sheath include the six roots of sensation in every Loose tube Optical fiber 1, 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 for 677 epoxy resin：10~20 parts；A diameter of 10~80 μm, the ultra-fine steel fibre that length/diameter ratio is 5~10 and length Spend for 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and a diameter of 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, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~8）, the silica optical fiber is 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 Communication ray of chromatograph, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type At least one composition in single-mode fiber, multimode fibre.

Certainly, the Loose tube described in this embodiment can be many, and a light guide fibre is comprised at least in every Loose tube Dimension.

The preparation 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 include be distributed in four Loose tubes 2 outside reinforcer 3 and big gasket for packing 21, Overcoat 4 outside Loose tube and big gasket for packing, the sheath 5 outside overcoat, it is outer outside sheath Sheath 7, comprises at least an optical fiber 1 in every Loose tube, it is characterised in that have one to prevent between sheath and oversheath Peck layer 6, it is described to prevent pecking layer by weight, it is made up of following raw material：Medium density polyethylene or low density polyethylene (LDPE) or 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；A diameter of 10~80 μm, length Degree/diameter than the ultra-fine steel fibre and length for 5~10 be 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and A diameter of 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； 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, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~ 8）, the silica optical fiber is by only comprising 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 dyed layer, the Communication ray it is slim for G.652, G.653, at least one composition G.654, G.655, G.656, G.657 in type single-mode fiber, multimode fibre.

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

The preparation method of the 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 is comprising four Loose tubes 2 being distributed in outside reinforcer 3, positioned at adjacent Loose tube External series gap in small gasket for packing 22, the overcoat 4 outside Loose tube and small gasket for packing, the interior shield outside overcoat Layer 5, the oversheath 7 outside sheath includes ten six roots of sensation optical fibers 1 in every Loose tube, the optical fiber is located at Among fibre ribbon, fibre ribbon is located in Loose tube, it is characterised in that have one to prevent pecking layer 6 between sheath and oversheath, described It is anti-to peck layer by weight, it is made up 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；A diameter of 10~80 μm, length/diameter ratio be 5 ~10 ultra-fine steel fibre and length be 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and a diameter of 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, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~8）, the titanium dioxide Silicon optical fiber be by only comprising fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing fibre core, The slim composition of Communication ray of covering, coat and dyed layer, the Communication ray it is slim for G.652, G.653, G.654, G.655, at least one composition G.656, G.657 in type single-mode fiber, multimode fibre.

Certainly, the Loose tube described in this embodiment can be many, at least one；One is comprised 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, and it includes and is distributed in At least one Loose tube 2 outside reinforcer 3 and at least one big gasket for packing, 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 adjacent Loose tube and the external series gap of big gasket for packing, positioned at Loose tube And overcoat 4, the sheath 5 outside overcoat outside big gasket for packing and small gasket for packing, it is outer outside sheath Sheath 7, comprises at least an optical fiber 1 in every Loose tube, 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 for 677 epoxy resin：10~20 parts；A diameter of 10~80 μm, the ultra-fine steel fibre that length/diameter ratio is 5~10 and length Spend for 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and a diameter of 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, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~8）, the silica optical fiber is 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 Communication ray of chromatograph, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type At least one composition in single-mode fiber, multimode fibre.

Anti- unfirmly closing optical cable in this embodiment, its preparation method is referred to embodiment 1 and puts example 2 with real, only not Many one fibre ribbon making steps after the completion of coloring are crossed, by colored optical fiber and band forms fibre ribbon, then in the shape of Loose tube During, fibre ribbon is inserted in Loose tube.

During anti-unfirmly closing fiber optic cable production in this embodiment, when having small gasket for packing, in SZ strandings, 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 is outer with big gasket for packing In gap.

Embodiment 4

See Fig. 4, anti-unfirmly closing optical cable, it is comprising Loose tube 2, the water blocking layer 8 outside Loose tube, outside water blocking layer Overcoat 4, the reinforcer 3 outside overcoat, the oversheath 7 outside reinforcer and overcoat, include in Loose tube 12 optical fibers 1, optical fiber be with the formal distribution of bulk in Loose tube or positioned at being placed in Loose tube Fibre ribbon in, it is characterised in that have between overcoat and oversheath one it is anti-peck layer 6, reinforcer is located at anti-in pecking layer, institute State and prevent pecking layer by weight, be made up 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；A diameter of 10~80 μm, length/diameter ratio be 5~10 ultra-fine steel fibre and length be 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and a diameter of 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, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~8）, the titanium dioxide Silicon optical fiber be by only comprising fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing fibre core, The slim composition of Communication ray of covering, coat and dyed layer, the Communication ray it is slim for G.652, G.653, G.654, G.655, at least one composition G.656, G.657 in type single-mode fiber, multimode fibre.

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

Embodiment 5

See Fig. 5, anti-unfirmly closing optical cable, it comprising Loose tube 2, lived outside Loose tube and by Loose tube integral coating many Reinforcer 3, by the securing wrapping layer 9 of multi reinforcements, the sheath 5 outside wrapping layer, outside sheath Oversheath 7, includes 12 optical fibers 1 in Loose tube, optical fiber be with the formal distribution of bulk in Loose tube or Person is located at and is placed in the fibre ribbon in Loose tube, it is characterised in that have one to prevent pecking layer between the sheath and oversheath 6, it is described to prevent pecking layer by weight, it is made up of following raw material：Medium density polyethylene or low density polyethylene (LDPE) or high density gather Ethene：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 μm, length/straight Footpath is than glass fibre and diameter that the ultra-fine steel fibre and length for 5~10 are 0.05~0.2mm, a diameter of 0.03~0.3mm It is the silica optical fiber that 6.5~260 μm, length are 0.03~0.3mm：40~60 parts；EVA hot-melt adhesive：5~10 parts；Model It is 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, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~8）, The silica optical fiber be by only comprising 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 dyed layer, the Communication ray it is slim for G.652, G.653, G.654, at least one composition G.655, G.656, G.657 in type single-mode fiber, multimode fibre.

3rd step：The step of making wrapping layer：The pine that the multi reinforcements integral coating for obtaining is formed in second step will first be purchased Outside sleeve pipe, multi reinforcements are coated in the stranded mode of spiral, and the stranded pitch of spiral is 100~300 times of reinforcer diameters, plus Strong part is steel wire or fiberglass reinforced plastics；Then the polyester that obtains will be purchased prick yarn or other has the yarn class of some strength Material is coated on 20~50mm pitch spiral windings and wrapping layer is formed outside reinforcer；

4th step：The step of making sheath：Low density polyethylene (LDPE) or medium density polyethylene or high-density polyethylene material are squeezed Modeling is coated on and sheath is formed outside the wrapping layer of the 3rd step formation, and the thickness of sheath is 0.8~2.0mm；

6th step：The step of making oversheath：Outer shield is coated in the anti-outer extrusion molding of layer of pecking that the 5th step is formed by sheath extruding machine 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.

Anti- unfirmly closing optical cable described in any of the above-described embodiment, it is characterised in that the anti-optimal implementation method for pecking layer For：By weight, what is be made up 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；A diameter of 10~80 μm, length/diameter ratio be 5~10 Ultra-fine steel fibre and length be 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and a diameter of 6.5~260 μ M, length are 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 ratio of weight and number of silicon optical fiber is（1~2）：（1~2）：（4~8）, the silica optical fiber is by only comprising 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 dyed 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 fiber, multimode At least one composition in optical fiber.

Anti- unfirmly closing optical cable described in any of the above-described embodiment, it is characterised in that the anti-suboptimum implementation method for pecking layer For：By weight, what is be made up 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；A diameter of 10~80 μm, length/diameter ratio be 5~10 Ultra-fine steel fibre and length be 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and a diameter of 6.5~260 μ M, length are 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 ratio of weight and number of silica optical fibre is（1~2）：（1~2）：（4~8）, the silica optical fiber be by only comprising fibre core or Person contains fibre core and covering or logical containing fibre core, covering and coat or containing fibre core, covering, coat and dyed layer Letter light slim composition, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type single-mode fiber, At least one composition in multimode fibre.

Anti- unfirmly closing optical cable described in any of the above-described embodiment, it is characterised in that the anti-more excellent implementation method for pecking layer For：By weight, what is be made up 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；A diameter of 10~80 μm, length/diameter ratio be 5~10 Ultra-fine steel fibre and length be 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and a diameter of 6.5~260 μ M, length are 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 ratio of weight and number of SiClx optical fiber is（1~2）：（1~2）：（4~8）, the silica optical fiber be by only comprising fibre core or Contain fibre core and covering or the communication containing fibre core, covering and coat or containing fibre core, covering, coat and dyed layer The slim composition of light, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 type single-mode fiber, many At least one composition in mode fiber.

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), or 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 overcoat is steel band or aluminium strip.

In the present invention, due to pecking layer with anti-, anti-layer of pecking has special formula, and on the one hand it can be entered by extruding machine Row extrusion molding, easy to process, speed of production is fast, and the cable and optical cable of a diameter of below 25mm, speed are produced on the extruding machines of φ 90 More than 60 ms/min are reached, and product qualified rate is high, because anti-pecking in layer has ultra-fine steel fibre and glass fibre and titanium dioxide Silicon optical fiber, it has extremely strong performance of stabbing, and birds peck after hitting for the first time, will injure its puff, therefore do not peck again The desire hit so that cable is effectively protected, by the use in nearly 3 years forest zones, does not have generation because birds peck bad optical cable again 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 are commercially just commercially available, and for preventing pecking the silica optical fiber in layer, can purchase light guide fine Dimension is rolled, crushed, being filtered acquisition, can not only use light guide fibrous finished product, can also be using no covering or without coating Layer or optical fiber fibre core or silica optical fiber core body without covering and coat and dyed layer, it might even be possible to use light guide Fiber waste product is rolled, crushed, being filtered acquisition, reaches the useless purpose for utilizing, and reduces the pollution of optical fiber producer；Additionally, this hair Material and product in bright are not related to problem of environmental pollution.

In the present invention, when having overcoat, overcoat with it is anti-peck layer and resist pecking for birds jointly hit, when there is no overcoat, plus Strong part with it is anti-peck layer and resist pecking for birds jointly hit, make optical cable resist peck hit, impact, the performance of pressure-resistant aspect is greatly increased.

In the present invention, oversheath can not use expensive nylon as far as possible, cost is declined to a great extent, and make The buying of user, safeguard that integrated cost is lower.

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

Applicant for the application in anti-unfirmly closing optical cable with by prior art produce optical cable made using contrast, light Cable is all to make somebody a mere figurehead to lay, and of the invention all using the structure of embodiment 1, oversheath is black and red, and 1#-4# represents different It is anti-peck layer formula, 1# is maximum magnitude, wherein the ratio of weight and number 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 Ratio of weight and number 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 weight portion of ultra-fine steel fibre, glass fibre, silica optical fiber Number is than being 1：1：1；Control group is 5#, uses the structure of embodiment 1, and only it prevents pecking layer, but oversheath Thickness be embodiment of the present invention 1 oversheath thickness add it is anti-peck thickness degree, oversheath is red, and each sequence 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 preventing pecking the effect of layer, really obtaining electric power, communications Guarantee has been arrived, meanwhile, anti-pecking in layer pecks best performance using more anti-of silica optical fiber content；And, oversheath is When coloured, pecking for birds is more subject on the contrary and is hit.

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

The present invention is not limited to above-mentioned preferred forms, it will be appreciated that design of the invention can be by other a variety of shapes Formula is implemented to use, and they are also fallen within protection scope of the present invention.

Claims

1. a kind of anti-unfirmly closing optical cable, its lived comprising Loose tube, outside Loose tube and by Loose tube integral coating many plus Strong part, by the securing wrapping layer of multi reinforcements, the sheath outside wrapping layer, the outer shield outside sheath Set, comprises at least an optical fiber in Loose tube, optical fiber be 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 institute It is that the method manufacture by comprising the steps of is obtained to state anti-unfirmly closing optical cable：

5th step：The step of making anti-peck layer：By sheath extruding machine, extrusion molding thickness is 1.0 outside the sheath that the 4th step is formed The anti-of~3.0mm thickness pecks layer, it is described it is anti-peck layer by weight, what is be made up of following raw material anti-pecks layer：The poly- second of Midst 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 ultra-fine steel fibre that 10~80 μm, length/diameter ratio are 5~10 and length be 0.05~0.2mm, a diameter of 0.03~ The glass fibre of 0.3mm and the silica optical fiber 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 comprising fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing to state silica optical fiber Constituted 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, at least one composition G.655, G.656, G.657 in type single-mode fiber, multimode fibre；

2. a kind of anti-unfirmly closing optical cable, its lived comprising Loose tube, outside Loose tube and by Loose tube integral coating many plus Strong part, by the securing wrapping layer of multi reinforcements, the sheath outside wrapping layer, the outer shield outside sheath Set, comprises at least an optical fiber in Loose tube, optical fiber be 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 institute State it is anti-peck layer by weight, what is be made up of following raw material anti-pecks layer：Medium density polyethylene or low density polyethylene (LDPE) or 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；A diameter of 10~80 μm, length Degree/diameter than the ultra-fine steel fibre and length for 5~10 be 0.05~0.2mm, the glass fibre of a diameter of 0.03~0.3mm and A diameter of 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； 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, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~ 8）, the silica optical fiber is by only comprising 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 dyed layer, the Communication ray it is slim for G.652, G.653, at least one composition G.654, G.655, G.656, G.657 in type single-mode fiber, multimode fibre.