CN106990495A

CN106990495A - A kind of anti-unfirmly closing optical cable and preparation method

Info

Publication number: CN106990495A
Application number: CN201710400118.7A
Authority: CN
Inventors: 周惠; 王硕; 王雅祯
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-03-10
Filing date: 2015-03-10
Publication date: 2017-07-28
Also published as: CN104614830B; CN106842462A; CN106959496A; CN104614830A; CN106842462B

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, 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, 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 preparation method

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

To adapt to the existence of environment, be grown in birds near forest zone mostly with 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 have many Color is planted, is pipped after sheath, the insulating barrier and Loose tube of a variety of colors look like pattern insect, and birds are eaten by mistake and often pecked bad Insulated wire cores, optical fiber, or even peck disconnected copper conductor, cause electric power/communication obstructed.Sleet is entered in cable by broken sheath 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 the failure that cable is repeatedly broken by 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.： CN202041686U patent, 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, optical fiber is in Loose tube, and Loose tube is centered around Around reinforcer, wrapped up by band, cable core filled composite is moisture-proof layer outside band, they constitute cable core, with bag in band There is the copper conductor bed course sheath of copper conductor, they are by sheath formation 8-shaped sheath, and its sheath is red.Cable can effectively be protected When outdoor is built on stilts not by unfirmly closing；It is entitled：The integrated photoelectricity composite cable of anti-unfirmly closing indoor and outdoor, Authorization Notice No.： CN203165550U patent, it includes flame-retardant sheath material, optical fiber, reinforcer, wire, painting plastic composite strip, insulating barrier and red PE sheaths, optical fiber 7 is at the center of flame-retardant sheath material 6, and both sides are reinforcers 5, 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, connect in computer room, can reach and avoid local have a power failure or batteries failure and the effect for causing power-off of base station；Reduction network is built , can also anti-unfirmly closing if expense, it is to avoid secondary wiring；It is entitled：Outdoor nonmetal bird pecking prevention aerial optical cable, Authorization Notice No.： CN202067003U patent, it includes optical fiber, Loose tube, fine cream, center reinforcemen, sheath, the Loose tube containing optical fiber (6) (8) it is centered around around center reinforcemen (2), there is fine cream (7) in Loose tube (8), Loose tube (8) is wrapped up by band (5), overcoat shield Cover (9),：There is material water-proof material (4) in band (5), sheath (9) is red pe sheath；It is entitled：The anti-unfirmly closing of self-bearing type is maked somebody a mere figurehead Aluminium core composite cable, Authorization Notice No.：CN202258545U patent, it include sheath, aluminum conductor, cable core filled composite, Reinforcer, optical fiber, pine set filled composite, Loose tube, band, moisture-proof layer and steel strand wires, optical fiber (7) is in Loose tube (9), pine There is pine set filled composite (8) in sleeve pipe (9), Loose tube (9) and aluminum conductor (3) are twisted together around reinforcer (6) and wrapped Having outside band (11) wrapping, band (11) in moisture-proof layer (12) and the red sheath (1) of 8 fonts, minor diameter red sheath has steel strand wires (13)；It is entitled：Anti- unfirmly closing self-bearing type butterfly leading in cable, Authorization Notice No.：CN202649559U patent, it includes light Fine, reinforcer and oversheath, reinforcer are rolled into butterfly by oversheath together in optical fiber both sides, and oversheath (4) side is also connected with Red sheath (5) equipped with wire reinforcement (1)；It is entitled：, Authorization Notice No.：CN202523458U patent, Loose tube and Copper conductor is centered around around reinforcer, and optical fiber and pine set filled composite are in Loose tube, and they are all wrapped up by band, and outside is Moisture-proof layer, the sheath of moisture-proof layer (11) outside is red sheath；It is entitled：A kind of anti-unfirmly closing optical cable, Authorization Notice No.： Have in CN203133348U patent, including cable core and oversheath, cable core and collectively formed by optical fiber, fine cream, ferrule Fiber unit and center reinforcemen, gasket for packing, it is characterised in that bundle yarn layer and wrinkle are sequentially provided between cable core and oversheath Line steel belt layer, oversheath is that red sheath and yellow sheath are symmetrical arranged longitudinally twisted structure.Oversheath is using red sheath Longitudinally twisted structure is symmetrical arranged with yellow sheath, outer likeness in form is wrapped in the snake on optical cable, is afraid of bird pest, dare not fly again Cable surface, which is gnawed, pecks optical cable, is hardly damaged optical cable, increases the service life；It is entitled：New anti-unfirmly closing colour code optical cable, mandate are public Announcement number：Have in CN203133349U patent, including cable core and oversheath, cable core by optical fiber, fine cream, the common structure of ferrule Into fiber unit and center reinforcemen, gasket for packing, it is characterised in that be sequentially provided between cable core and oversheath bundle yarn layer, Inner sheath and wrinkle steel belt layer, the structure of oversheath are equidistantly provided with the red sheath of several yellow colour codes for longitudinal direction；It is entitled： Aerial cable, Authorization Notice No. with anti-unfirmly closing function：CN203325538U patent, including it is used as the steel wire of self-supporting line (1), eight be coated with polyethylene layer (21) copper conductor (2) and red oversheath body (3)；Eight copper conductors (2) are two-by-two Stranded to form four pairs of twisted wires communicated as information to (4), the first twisted wire of the four twisted pair wires centering is to (41), the second twisted wire pair (42), the 3rd twisted wire is arranged in order and stranded formation conductive cable core (5) counterclockwise to (43) and the 4th twisted wire to (44)；One polyester Band (6) is extruded in the polyester belt (6) outer surface around the conductive cable core (5) outer surface, an inner restrictive coating (7) is wrapped in；It is described Red oversheath body (3) includes the first sub- sheath (31) and the second sub- sheath (32), the first sub- sheath (31) and the second son Connect muscle portion (33) by one between sheath (32) to connect, the first sub- sheath (31) is coated on the inner restrictive coating (7) appearance Face, the second sub- sheath (32) is coated on the steel wire (1) outer surface；It is entitled：The anti-unfirmly closing photoelectricity mixing of Self-bearing-type overhead Optical cable, Authorization Notice No.：CN203260336U patent, it include aluminum conductor, red PE pe sheaths layer, PBT Loose tubes, Metal reinforcement, steel strand wires, PE sheaths, metal compound belt, red PE protective cover materials, optical fiber carry out pine set protection and make PBT pines Filler is filled with sleeve pipe (3), PBT Loose tubes (3)；PBT Loose tubes (3) are centered around metal reinforcement (4) outside by stranded, It is that outside is equipped with red PE shields after the metal compound belt (7) of vertical bag armouring, metal compound belt (7) armouring outside cable core after stranding Jacking (2), aluminum conductor (1), steel strand wires (5), the red PE pe sheaths layer (2) of PE sheaths (6), they are mounted side by side on In red PE pe sheaths layer (2)；It is entitled：Self-bearing type bird-pecking-proof overhead integrated leading-in optical cable, Authorization Notice No.： CN202217541U patent, 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, Loose tube (10) or other light units containing optical fiber are strengthened around center Part (2) is stranded, and outside is band (6) and moisture-proof layer (8), and feed line (4) and communication metal wire surround center reinforcemen to (7) (2) stranded, it is the red poly- second sheath (11) of 8 fonts to have in band (6) outside material water-proof material in cable (5), moisture-proof layer (8), and 8 fonts are red Steel strand wires (12) are cased with the minor diameter set of color pe sheath (11)；Above-mentioned patent, makes the cable outermost layer be bar none All or part of red or other colors, birds are taken the photograph for prestige, it is applicant's understanding that only the color of sheath turns into difference skill to be red Art feature, should not turn into utility model patent, because it is not the shape and structure of patent protection first；Secondly, it is red Or other colors nor for all forest zone birds can prestige take the photograph, conversely, because cable can be swung when having wind or Vibrations, most of birds are mistaken for pink bollworm, and therefore, eye-catching cable is more easy to be attacked by birds, therefore causes cable The fault rate occurred by unfirmly closing is higher；It is entitled：A kind of anti-unfirmly closing All Dielectric self-support, Authorization Notice No.： CN203054288U patent, it includes optical fiber, Loose tube, fine cream, center reinforcemen, sheath, aramid layers, and outer jacket contains The Loose tube (3) for having optical fiber (1) is centered around around center reinforcemen (4), has fine cream (2), Loose tube (3) quilt in Loose tube (3) Yarn (6) wrapping is pricked, between sheath (7) and Loose tube (3), there is cable core filler (5), aramid layers (8) are evenly distributed in interior Around sheath (7), last outer jacket (9) uses nylon sheath wire material；The cost of nylon sheath wire material in itself is polyethylene sheath material 15-20 times, moreover, process velocity is extremely slow, product qualified rate only 50% or so, and simultaneous manufacturing thickness can only be Below 0.8mm can be only achieved the anti-requirement for pecking needs, it is necessary to repeatedly process；It is entitled：Communication cable preventing damages from rats, ants and birds, award Weigh notification number：CN201094125Y patent, including cable core (1), cable core (1) by it is some to the line with band (21) to (2) Composition, insulating barrier (23) of the line to (2) by two conductors (22) and conductor (22) outside is stranded to be formed, and the cable core (1) is outside by interior To being sequentially provided with band (3), aluminium strip (4) and high molecular weight high density polyolefin jacket (5) outside；It is entitled：Anti- unfirmly closing communication electricity Cable, Authorization Notice No.：CN201017714Y patent, including core, polyethylene layer, polyester lapping layer, plastic-aluminum shielding band, Polyethylene layer, polyester lapping layer, plastic-aluminum shielding band, polyethylene sheath, armouring are surrounded by outside polyethylene sheath, core successively Layer, polyethylene outer sheath.Many one layers of the outside of this patent scribbles the steel band of preserver, many one layer of thicker moisture vapor transmissions of outermost Coefficient small high-molecular polythene, so that cable life extends more than one times；And when electric-field intensity is higher, shielding Characteristic is improved by about one time than original cable；In above-mentioned patent, outer layer employs high density or macromolecule polyolefin jacket, existing skill It is conventional material in art, fact proved, it is extremely difficult to plays a part of being effective against birds invasion and attack.Therefore, user expects have more preferably The anti-cable, anti-optical cable of pecking pecked of 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 be the preparation method of this kind of anti-unfirmly closing optical cable；They are realized using following technical scheme.

In the embodiment 1 of the present invention, 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, a diameter of 0.03~0.3mm glass fibre 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 include 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, G.656, G.657 at least one of type single-mode fiber, multimode fibre are constituted.

In the embodiment 2 of the present invention, 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 An optical fiber 1, sheath and outer shield are comprised at least in sheath 5, the oversheath 7 outside sheath, every Loose tube Have one to prevent pecking layer 6 between set.

In the embodiment 3 of the present invention, 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 An optical fiber is comprised at least in sheath 5 outside overcoat, the oversheath 7 outside sheath, every Loose tube 1, the optical fiber is located among fibre ribbon, and fibre ribbon is located in Loose tube, has one to prevent pecking between sheath and oversheath Layer 6.

Anti- unfirmly closing optical cable, it includes at least one Loose tube 2 being distributed in outside reinforcer 3 and at least one big filling 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, has one to prevent pecking layer 6 between sheath and oversheath.

The present invention embodiment 4 in, 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 Have one to prevent pecking layer 6 in the fibre ribbon being placed in Loose tube, between overcoat and oversheath.

In the embodiment 5 of the present invention, 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, has between the sheath and oversheath One prevents pecking layer 6.

Anti- unfirmly closing optical cable described above, the material of the wrapping layer pricks yarn or other yarns with some strength for polyester Class material, it is to be coated on by way of spiral winding outside multi reinforcements, is relatively fixed multi reinforcements position.

Anti- unfirmly closing optical cable described above, the material of the reinforcer is steel wire or fiberglass-reinforced plastic lever.

Anti- unfirmly closing optical cable described above, the material of the Loose tube is polybutylene terephthalate (PBT) or modified poly- third Alkene.

Anti- unfirmly closing optical cable described above, the material of the sheath is low density polyethylene (LDPE) or medium density polyethylene or height Density polyethylene.

Anti- unfirmly closing optical cable described above, the material of the oversheath is low density polyethylene (LDPE) or medium density polyethylene or height Density polyethylene or nylon.

Anti- unfirmly closing optical cable described above, described optical fiber is single mode or multimode fibre, and further its model For G.652 type or G.655 type or G.657 type or A1a types or A1b types.

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

Anti- unfirmly closing optical cable described above, the material of the big gasket for packing is polypropylene or polyethylene or polypropylene and poly- second The mixture of alkene.

Anti- unfirmly closing optical cable described above, the material of the small gasket for packing is polypropylene or polyethylene or polypropylene and poly- second The mixture of alkene.

There is the interior filler that blocks water, the filler that inside blocks water is in anti-unfirmly closing optical cable described above, the Loose tube Ointment or water-proofing powder or water blocking yarn.

Filled with outer block water filler, extrernal resistance in anti-unfirmly closing optical cable described above, the outer gap of the Loose tube Water filler is ointment or water-proofing powder or water blocking yarn.

The preparation method of anti-unfirmly closing optical cable in embodiment 1 of the present invention, 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 formation 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 long for Loose tube 1.002~1.015 times of degree, the material of Loose tube is polybutylene terephthalate (PBT) or modified polypropene, makes Loose tube When in the material of Loose tube add Loose tube extrusion molding special color master batch；It is repeated multiple times, form the Loose tube of many different colours；

3rd step：The step of making optical cable core：Second step is made into many obtained Loose tubes, 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 to the optical cable core of the 3rd step formation Outer formation overcoat, then extrusion molding low density polyethylene (LDPE) or medium density polyethylene or high-density polyethylene material are formed outside overcoat 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, anti-peck layer by what following raw material were constituted：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, length/diameter ratio be 5~10 ultra-fine steel fibre and length be 0.05~0.2mm, it is a diameter of 0.03~0.3mm glass fibre and the silica optical fiber that a diameter of 6.5~260 μm, length is 0.03~0.3mm：40~ 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 parts by weight of silica optical fiber Number is than being (1~2)：(1~2)：(4~8), the silica optical fiber be by only include fibre core or containing fibre core and covering or Person contains fibre core, covering and coat or the slim composition of 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：Protected by sheath extruding machine in anti-peck that the 5th step is formed outside layer outside extrusion molding cladding 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 Spend polyethylene.

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

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

4th step：The step of making optical cable core：Second step is made into many obtained Loose tubes, 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 pitch stranded SZ is 9~18 times of reinforcer and Loose tube diameter sum；

5th step：The step of making sheath：Steel band or aluminium strip material are first longitudinally coated on to the optical cable core of the 4th step formation Outer formation overcoat, then extrusion molding low density polyethylene (LDPE) or medium density polyethylene or high-density polyethylene material are formed outside overcoat 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, anti-peck layer by what following raw material were constituted：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, length/diameter ratio be 5~10 ultra-fine steel fibre and length be 0.05~0.2mm, it is a diameter of 0.03~0.3mm glass fibre and the silica optical fiber that a diameter of 6.5~260 μm, length is 0.03~0.3mm：40~ 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 parts by weight of silica optical fiber Number is than being (1~2)：(1~2)：(4~8), the silica optical fiber be by only include fibre core or containing fibre core and covering or Person contains fibre core, covering and coat or the slim composition of 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：Protected by sheath extruding machine in anti-peck that the 6th step is formed outside layer outside extrusion molding cladding 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 Spend polyethylene.

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

Second step：The step of making Loose tube：By secondary coated extruding machine formation 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 long for Loose tube 1.002~1.015 times of degree, the material of Loose tube is polybutylene terephthalate (PBT) or modified polypropene, makes Loose tube When in the material of Loose tube add Loose tube extrusion molding special color master batch；

3rd step：The step of making anti-peck layer：First take waterstop or the yarn material that blocks water be coated on second step formation Loose tube it Outer formation water blocking layer；Take steel band or aluminium strip to be longitudinally coated on outside water blocking layer again and form overcoat；Two are taken to strengthen placement again Outside overcoat；Then by sheath extruding machine, extrusion molding thickness is the anti-of 1.0~3.0mm thickness outside overcoat and reinforcer Peck layer, it is described it is anti-peck layer by weight, anti-peck layer by what following raw material were constituted：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 The ultra-fine steel fibre and length that m, length/diameter ratio are 5~10 are 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibers 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 including fibre core or containing fibre core and covering or containing fibre core, covering and coating Layer or the slim composition of Communication ray containing fibre core, covering, coat and dyed layer, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 at least one of type single-mode fiber, multimode fibre are constituted；Wherein, two Reinforcer is in overcoat external symmetry placement and the minimum range 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：Protected by sheath extruding machine in anti-peck that the 3rd step is formed outside layer outside extrusion molding cladding Cover material；The material of oversheath is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or nylon 12；When outer shield When the material of set is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE), oversheath thickness is 1.0~3.0mm； When the material of oversheath is nylon 12, oversheath thickness is 0.4~0.8mm.

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 a diameter of below 25mm cable and optical cable, 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-peck has ultra-fine steel fibre and glass fibre and titanium dioxide in layer Silicon optical fiber, it has extremely strong performance of stabbing, and birds peck hitting after 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 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.

Embodiment

Embodiment 1 of the present invention is to the embodiment that embodiment 5 is 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 The six roots of sensation is included in overcoat 4, the sheath 5 outside overcoat, the oversheath 7 outside sheath, every Loose tube Optical fiber 1, has one to prevent pecking layer 6 between sheath and oversheath, described to prevent pecking layer by weight, by following raw material structure Into：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50~80 parts；The ring that the trade mark is 617 or the trade mark is 677 Oxygen tree fat：10~20 parts；A diameter of 10~80 μm, length/diameter ratio be 5~10 ultra-fine steel fibre and length be 0.05~ 0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length are 0.03~0.3mm titanium dioxide Silicon optical fiber：40~60 parts；EVA hot-melt adhesive：5~10 parts；The cable jacket antioxidant of model 1010：3~5 parts；Hydrogen-oxygen Change aluminium：15~25 parts；Paraffin：3~9 parts；Carbon black master batch：5~10 parts；The ultra-fine steel fibre, glass fibre, silica light Fine ratio of weight and number is (1~2)：(1~2)：(4~8), the silica optical fiber is by only including fibre core or containing fibre Core and covering or the Communication ray containing fibre core, covering and coat or containing fibre core, covering, coat and dyed layer are 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 fibre At least one of constitute.

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

The preparation method of anti-unfirmly closing optical cable, 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 and one big gasket for packing 21 outside reinforcer 3, Overcoat 4 outside Loose tube and big gasket for packing, the sheath 5 outside overcoat, it is outer outside sheath An optical fiber 1 is comprised at least in sheath 7, every Loose tube, has 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, a diameter of 0.03~0.3mm glass fibre 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 include 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, G.656, G.657 at least one of type single-mode fiber, multimode fibre are constituted.

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 one.

The preparation method of anti-unfirmly closing optical cable in this embodiment, 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 Ten six roots of sensation optical fibers 1 are included in layer 5, the oversheath 7 outside sheath, every Loose tube, the optical fiber is located at Among fibre ribbon, fibre ribbon is located in Loose tube, has one to prevent pecking layer 6 between sheath and oversheath, the anti-layer of pecking is by weight Part meter is measured, is made up of following raw material：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50~80 parts；Board Number it is 617 or epoxy resin that the trade mark is 677：10~20 parts；A diameter of 10~80 μm, length/diameter ratio for 5~10 it is ultra-fine Steel fibre and length are 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length For 0.03~0.3mm silica optical fiber：40~60 parts；EVA hot-melt adhesive：5~10 parts；The cable jacket of model 1010 is used Antioxidant：3~5 parts；Aluminium hydroxide：15~25 parts；Paraffin：3~9 parts；Carbon black master batch：5~10 parts；The extra-fine steel is fine Dimension, glass fibre, the ratio of weight and number of silica optical fiber are (1~2)：(1~2)：(4~8), the silica optical fiber is By only including fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing fibre core, covering, coating The Communication ray slim composition of layer and dyed layer, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 at least one of type single-mode fiber, multimode fibre are constituted.

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 and at least one big gasket for packing outside reinforcer 3, in the external series gap of adjacent Loose tube or phase In the external series gap of adjacent big gasket for packing or adjacent Loose tube is with the small gasket for packing in the external series gap of big gasket for packing, positioned at Loose tube And the overcoat 4 outside big gasket for packing and small gasket for packing, the sheath 5 outside overcoat, it is outer outside sheath An optical fiber 1 is comprised at least in sheath 7, every Loose tube, the optical fiber is located among fibre ribbon, and fibre ribbon is located at Have one to prevent pecking layer 6 in Loose tube, between sheath and oversheath, it is described to prevent pecking layer by weight, by following raw material structure Into：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50~80 parts；The ring that the trade mark is 617 or the trade mark is 677 Oxygen tree fat：10~20 parts；A diameter of 10~80 μm, length/diameter ratio be 5~10 ultra-fine steel fibre and length be 0.05~ 0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length are 0.03~0.3mm titanium dioxide Silicon optical fiber：40~60 parts；EVA hot-melt adhesive：5~10 parts；The cable jacket antioxidant of model 1010：3~5 parts；Hydrogen-oxygen Change aluminium：15~25 parts；Paraffin：3~9 parts；Carbon black master batch：5~10 parts；The ultra-fine steel fibre, glass fibre, silica light Fine ratio of weight and number is (1~2)：(1~2)：(4~8), the silica optical fiber is by only including fibre core or containing fibre Core and covering or the Communication ray containing fibre core, covering and coat or containing fibre core, covering, coat and dyed layer are 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 fibre At least one of constitute.

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 of fibre ribbon making steps after the completion of coloring are crossed, by colored optical fiber and with fibre ribbon is formed, 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 and big gasket for packing it is outer 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 Included in overcoat 4, the reinforcer 3 outside overcoat, the oversheath 7 outside reinforcer and overcoat, 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, have between overcoat and oversheath one it is anti-peck layer 6, reinforcer be located at it is anti-peck in layer, it is described it is anti-peck layer by Parts by weight meter, is made up of following raw material：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50~80 parts； The 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 for 5~10 it is super Thin steel fibre and length are 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length Spend the silica optical fiber for 0.03~0.3mm：40~60 parts；EVA hot-melt adhesive：5~10 parts；The cable jacket of model 1010 Use antioxidant：3~5 parts；Aluminium hydroxide：15~25 parts；Paraffin：3~9 parts；Carbon black master batch：5~10 parts；The extra-fine steel is fine Dimension, glass fibre, the ratio of weight and number of silica optical fiber are (1~2): (1~2): (4~8), and the silica optical fiber is By only including fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing fibre core, covering, coating The Communication ray slim composition of layer and dyed layer, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 at least one of type single-mode fiber, multimode fibre are constituted.

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, comprising 12 optical fibers 1 in Loose tube, optical fiber be with the formal distribution of bulk in Loose tube or Person, which is located at, to be placed in the fibre ribbon in Loose tube, has one to prevent pecking layer 6 between the sheath and oversheath, described to prevent pecking Layer by weight, is made up of following raw material：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50~80 Part；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, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μ M, length are 0.03~0.3mm silica optical fiber：40~60 parts；EVA hot-melt adhesive：5~10 parts；The cable of model 1010 Sheath 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 silica light Fibre be by only include fibre core or containing fibre core and covering or containing fibre core, covering and coat or containing fibre core, covering, The slim composition of Communication ray of coat and dyed layer, the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 at least one of type single-mode fiber, multimode fibre constitute.

3rd step：The step of making wrapping layer：The pine that the multi reinforcements integral coating that first buying is obtained is formed in second step 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 obtained polyester bundle yarn or other yarn classes with some strength will be purchased Material is coated on outside reinforcer with 20~50mm pitch spiral windings and forms wrapping layer；

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

6th step：The step of making oversheath：Protected by sheath extruding machine in anti-peck that the 5th step is formed outside layer outside extrusion molding cladding Cover material；The material of oversheath is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or nylon 12；When outer shield When the material of set is low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE), oversheath thickness is 1.0~3.0mm； When the material of oversheath is nylon 12, oversheath thickness is 0.4~0.8mm.

Anti- unfirmly closing optical cable described in any of the above-described embodiment, it is described it is anti-peck layer optimal embodiment be：By weight Part meter, anti-layer is pecked by what following raw material were constituted：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：50 parts； The epoxy resin that the trade mark is 617 or the trade mark is 677：10 parts；A diameter of 10~80 μm, the extra-fine steel that length/diameter ratio is 5~10 Fiber and length are that 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length are 0.03~0.3mm silica optical fiber：40 parts；EVA hot-melt adhesive：5 parts；The cable jacket antioxidant of model 1010：3 Part；Aluminium hydroxide：15 parts；Paraffin：3 parts；Carbon black master batch：5 parts；The ultra-fine steel fibre, glass fibre, silica optical fiber Ratio of weight and number is (1~2)：(1~2)：(4~8), the silica optical fiber be by only include fibre core or containing fibre core and Covering or the slim composition of the Communication ray containing fibre core, covering and coat or containing fibre core, covering, coat and dyed layer , the Communication ray it is slim for G.652, G.653, G.654, G.655, G.656, G.657 in type single-mode fiber, multimode fibre At least one composition.

Anti- unfirmly closing optical cable described in any of the above-described embodiment, it is described it is anti-peck layer suboptimum embodiment be：By weight Part meter, anti-layer is pecked by what following raw material were constituted：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：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, the extra-fine steel that length/diameter ratio is 5~10 Fiber and length are that 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length are 0.03~0.3mm silica optical fiber：60 parts；EVA hot-melt adhesive：10 parts；The cable jacket antioxidant of model 1010： 5 parts；Aluminium hydroxide：25 parts；Paraffin：9 parts；Carbon black master batch：10 parts；The ultra-fine steel fibre, glass fibre, silica optical fiber Ratio of weight and number be (1~2)：(1~2)：(4~8), the silica optical fiber is by only including fibre core or containing fibre core With covering or slim group of the Communication ray containing fibre core, covering and coat or containing fibre core, covering, coat and dyed layer Into, the 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 one composition.

Anti- unfirmly closing optical cable described in any of the above-described embodiment, it is described it is anti-peck layer more excellent embodiment be：By weight Part meter, anti-layer is pecked by what following raw material were constituted：Medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE)：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, the extra-fine steel that length/diameter ratio is 5~10 Fiber and length are that 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibre and a diameter of 6.5~260 μm, length are 0.03~0.3mm silica optical fiber：50 parts；EVA hot-melt adhesive：8 parts；The cable jacket antioxidant of model 1010：4 Part；Aluminium hydroxide：20 parts；Paraffin：6 parts；Carbon black master batch：7.5 part；The ultra-fine steel fibre, glass fibre, silica optical fiber Ratio of weight and number be (1~2)：(1~2)：(4~8), the silica optical fiber is by only including fibre core or containing fibre core With covering or slim group of the Communication ray containing fibre core, covering and coat or containing fibre core, covering, coat and dyed layer Into, the 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 one composition.

Anti- unfirmly closing optical cable described above, anti-medium density polyethylene or low density polyethylene (LDPE) or the high density pecked in layer Polyethylene, can be pure medium density polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE) or cable use in it is close Spend polyethylene or low density polyethylene (LDPE) or high density polyethylene (HDPE) finished product material.

Anti- unfirmly closing optical cable described above, 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 a diameter of below 25mm cable and optical cable, 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-peck has ultra-fine steel fibre and glass fibre and titanium dioxide in layer Silicon optical fiber, it has extremely strong performance of stabbing, and birds peck hitting after 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 the anti-silica optical fiber pecked in layer, can purchase light guide fine Dimension is rolled, crushed, filtering acquisition, can not only be used light guide fibrous finished product, can also be used no covering or not coat 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, filtering acquisition, is reached the useless purpose utilized, is reduced the pollution of optical fiber producer；In addition, 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 try one's best without using expensive nylon, can so cost is declined to a great extent, 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 has made using contrast, light for the anti-unfirmly closing optical cable in the application and the optical cable produced by prior art Cable is all to make somebody a mere figurehead to lay, and the structure for all using embodiment 1 of the invention, 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 It is 1 to measure portion rate：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#, uses the structure of embodiment 1, and only it prevents pecking layer, but oversheath Thickness adds for the oversheath thickness of embodiment 1 of the present invention to be prevented pecking thickness degree, and 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 the anti-effect for pecking layer, really obtaining electric power, communications Ensure, meanwhile, anti-peck in layer pecks best performance using more anti-of silica optical fiber content；Moreover, oversheath is coloured When, pecking for birds is more subject on the contrary to be hit.

Applicant has also carried out same contrast test to other embodiments, and result of the test is basically identical；In the present invention Anti- layer of pecking is by test, and its performance is all higher than the minimum performance requirement of optical cable, the industry of cable jacket material and national standard, 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 preparation method of anti-unfirmly closing optical cable, anti-unfirmly closing optical cable is comprising Loose tube, outside Loose tube and by Loose tube Multi reinforcements that integral coating is lived, by the securing wrapping layer of multi reinforcements, the sheath outside wrapping layer, be located at An optical fiber is comprised at least in oversheath outside sheath, Loose tube, optical fiber is existed with the formal distribution of bulk Have one to prevent pecking layer in Loose tube, between the sheath and oversheath；

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

Second step：The step of making Loose tube：By secondary coated extruding machine formation 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 long for Loose tube 1.002~1.015 times of degree, the material of Loose tube is polybutylene terephthalate (PBT), in Loose tube during making Loose tube Loose tube extrusion molding special color master batch is added in material；

3rd step：The step of making wrapping layer：The pine that the multi reinforcements integral coating that first buying is obtained is formed in second step 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；Then polyester bundle yarn buying obtained is coated on outside reinforcer with 20~50mm pitch spiral windings forms bag Prick layer；

4th step：The step of making sheath：Outside the wrapping layer that low-density polyethylene material extrusion molding is coated on to the formation of the 3rd step Sheath is formed, 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, anti-peck layer by what following raw material were constituted：The poly- second of Midst density Alkene：50~80 parts；The trade mark is 617 epoxy resin：10~20 parts；A diameter of 10~80 μm, length/diameter ratio be 5~10 Ultra-fine steel fibre and length be 0.05~0.2mm, a diameter of 0.03~0.3mm glass fibre and it is a diameter of 6.5~260 μm, Length is 0.03~0.3mm silica optical fiber：40~60 parts；EVA hot-melt adhesive：5~10 parts；The cable shield of model 1010 Apply mechanically antioxidant：3~5 parts；Aluminium hydroxide：15~25 parts；Paraffin：3~9 parts；Carbon black master batch：5~10 parts；The extra-fine steel Fiber, glass fibre, the ratio of weight and number of silica optical fiber are（1~2）：（1~2）：（4~8）, the silica optical fiber Constituted by the Communication ray for only including fibre core is slim, the Communication ray is slim to be constituted for multimode fibre；

6th step：The step of making oversheath：Protected by sheath extruding machine in anti-peck that the 5th step is formed outside layer outside extrusion molding cladding Cover material；The material of oversheath is low density polyethylene (LDPE)；Oversheath thickness is 1.0~3.0mm.