CN105785534A

CN105785534A - Full-dielectric optical cable for power or communication and manufacturing method thereof

Info

Publication number: CN105785534A
Application number: CN201610315999.8A
Authority: CN
Inventors: 陈建芳
Original assignee: Suzhou Gaojing Tezhuan Information Technology Co Ltd
Current assignee: Suzhou Gaojing Tezhuan Information Technology Co Ltd
Priority date: 2016-05-15
Filing date: 2016-05-15
Publication date: 2016-07-20

Abstract

The invention belongs to the optical cable technical field and relates to a full-dielectric optical cable for power or communication. The full-dielectric optical cable is composed of a cable core, an outer reinforcement component located outside the cable core, and a sheath layer wrapping the outer reinforcement component. The optical cable is characterized in that: the cable core is composed of at least three outer-layer optical units which are distributed outside an inner-layer optical unit and a binding layer which binds all the outer-layer optical units; each outer-layer optical unit is composed of a tightly-sheathed optical fiber, an inner reinforcement layer which wraps the tightly-sheathed optical fiber through extrusion molding, and an optical unit protective layer which wraps the inner reinforcement layer through extrusion molding, wherein the tightly-sheathed optical fiber is composed of bending-resistant light-guide fibers and a bending-resistant layer which wraps the bending-resistant light-guide fibers; and the inner-layer optical unit has the same structure with the outer-layer optical units. The invention also discloses a manufacturing method of the optical cable. The optical cable of the invention has the advantages of high softness, high better bending performance, lower bending additional attenuation and better flame retardant performance.

Description

A kind of nonconductive optical fiber cable for electric power or communication and manufacture method thereof

Technical field

The invention belongs to optical cable technology field, especially relate to a kind of nonconductive optical fiber cable for electric power or communication and manufacture method thereof.

Background technology

In prior art; nonconductive optical fiber cable generally has two classes; one of for for outdoor; it is referred to as All Dielectric self-support; the Loose tube that this optical cable is generally comprised optical fiber by inside, the protective layer being positioned at outside Loose tube, it is positioned at the restrictive coating outside protective layer and constitutes; owing to being the occasion uses such as outdoor power shaft tower, pipeline, therefore its bending property requires to be generally about 10 times (static state) of optic cable diameter；Another kind of for inside cable, the inside cable of regulation in this optical cable such as YD/TD1258, this optical cable is also difficult to meet the demand of user in counter-bending, bend resistance direction, limited performance incomparable comparatively ideal little bending, high bend resistant optical fibers in optical fiber of the prior art, prior art such as counter-bending, the bend resistance of optical cable.

Summary of the invention

In order to solve the problems referred to above, it is an object of the invention to disclose a kind of nonconductive optical fiber cable, it is usable in electric power or communication technical field, and the present invention also will disclose the manufacture method of this optical cable, and discloses a kind of bend resistant optical fibers；They realize by the following technical solutions.

In 1st embodiment of the present invention, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement outside cable core and outer reinforcement is enveloped restrictive coating；It is characterized in that, cable core is by least three outer light unit being centrally located outside reinforcement and is constituted by the wrapping layer that all outer light unit are wrapped up, the light unit sheath that described outer light unit is coated on the interior enhancement Layer outside tight tube fiber by tight tube fiber, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers.

In 2nd embodiment of the present invention, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement outside cable core and outer reinforcement is enveloped restrictive coating；It is characterized in that, cable core is made up of at least three outer light unit being centrally located outside reinforcement, the light unit sheath that described outer light unit is coated on the interior enhancement Layer outside tight tube fiber by tight tube fiber, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers.

In 3rd embodiment of the present invention, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement outside cable core and outer reinforcement is enveloped restrictive coating；It is characterized in that, cable core is by least three outer light unit being distributed in outside internal layer light unit and is constituted by the wrapping layer that all outer light unit are wrapped up, the light unit sheath that described outer light unit is coated on the interior enhancement Layer outside tight tube fiber by tight tube fiber, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers；Described layer light unit and outer light unit have identical structure.

In 4th embodiment of the present invention, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement outside cable core and outer reinforcement is enveloped restrictive coating；It is characterized in that, cable core is constituted by least two the outer light unit being centrally located outside reinforcement, at least one gasket for packing and by the wrapping layer that all outer light unit and gasket for packing are wrapped up, the light unit sheath that described outer light unit is coated on the interior enhancement Layer outside tight tube fiber by tight tube fiber, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers.

In 6th embodiment of the present invention, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement outside cable core and outer reinforcement is enveloped restrictive coating；It is characterized in that, cable core is by four the outer light unit being centrally located outside reinforcement, the first power transmission unit, the second power transmission unit and is constituted by the wrapping layer that all outer light unit and the first power transmission unit and the second power transmission unit are wrapped up, the light unit sheath that described outer light unit is coated on the interior enhancement Layer outside tight tube fiber by tight tube fiber, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers；Described first power transmission unit is made up of the first conductor, the first insulating barrier of being enveloped by the first conductor, and the second power transmission unit is made up of the second conductor, the second insulating barrier of being enveloped by the second conductor, the first power transmission unit and the second power transmission unit placed adjacent.

In 7th embodiment of the present invention, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement outside cable core and outer reinforcement is enveloped restrictive coating；It is characterized in that, cable core is by two the outer light unit being centrally located outside reinforcement, the first power transmission unit, the second power transmission unit, two gasket for packings and is constituted by the wrapping layer that all outer light unit, the first power transmission unit, the second power transmission unit and two gasket for packings are wrapped up, the light unit sheath that described outer light unit is coated on the interior enhancement Layer outside tight tube fiber by tight tube fiber, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers；Described first power transmission unit is made up of the first conductor, the first insulating barrier of being enveloped by the first conductor, second power transmission unit is made up of the second conductor, the second insulating barrier of being enveloped by the second conductor, first power transmission unit and the second power transmission unit placed adjacent, two outer light unit placed adjacent, outer light unit is intercepted by two gasket for packings with power transmission unit to be opened.

Electric power described in embodiment 1 or communication nonconductive optical fiber cable, it is characterised in that its manufacture method comprises the step being sequentially carried out:

The first step: taking G.657 type bend resistance optical fibers, and be coated with polrvinyl chloride or politef bending resistance fold at its outer extrusion molding and then form tight tube fiber, the thickness of bending resistance fold is 0.10 0.35mm；Polrvinyl chloride or politef use half plsitive mold when extrusion molding, and the die sleeve internal diameter of mould is big 0.1 0.2mm than core rod external diameter；After forming bending resistance fold, tight tube fiber carries out water-bath crystallization through the water bath region of 60 DEG C, 40 DEG C, 25 DEG C, 35 DEG C, be then passed through surface dry up be coiling to tight tube fiber around sale at reduced prices tool on, wherein, to be 1.5-2.5 second, each some time through the water bath region of 40 DEG C of tight tube fiber be each some time through the water bath region of 60 DEG C of tight tube fiber the 1.0-1.5 second, each some time through the water bath region of 25 DEG C of tight tube fiber is the 1.0-1.5 second, each some time through the water bath region of 35 DEG C of tight tube fiber is the 2.0-4.0 second；The tension force of coiling tight tube fiber is 8-10N；

Second step: take aramid yarn or glass fiber yarn that 24 numbers are 1610dtex or 1600dtex or 3200dtex or 3220dtex, is formed outside wrapping in, with the pitch spiral winding of 3 5mm, the tight tube fiber that the first step is formed and strengthens internal layer；The aramid yarn taken again and strengthen same radical and same number in internal layer or glass fiber yarn, formed outside wrapping in reinforcement internal layer with the pitch spiral winding of 3 5mm and strengthen outer layer；Complete the manufacture of interior enhancement Layer；Wherein, strengthen internal layer and reinforcement outer layer around to being contrary；

3rd step: taking polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene extrusion molding is coated on outside the interior enhancement Layer that second step is formed and forms light unit sheath, wherein, the diameter of light unit sheath is 1.8 2.5mm；Complete the manufacture of outer light unit；Undertaken cutting at least three by outer light unit；

null4th step: take aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever is placed in the central canal of cabling device，And at least three outer light unit formed in the 3rd step is inserted in the peripheral tube of cabling device，Peripheral tube is symmetrically distributed in outside central canal，Axis direction along central canal draws aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever，Simultaneously，Peripheral tube is made to make relative to central canal to rotate forward the motion stopping reversion stopping，And draw outer light unit together in the direction of aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever motion，Outer light cell distribution is made to form intertwist body outside aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever，Wherein，Rotate forward、The time of reversion is equal，Next action is entered when the speed that peripheral tube rotates is zero；The speed that speed and the aramid yarn rope of the traction of outer light unit or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever move is the same, and the speed of rotating forward is 2-4 times of hauling speed；Every peripheral tube of cabling device is only placed an outer light unit；

5th step: take polyester bundle yarn or yarn pricked by nylon or aramid fiber pricks yarn or non-woven fabrics or waterstop or polyester belt wrapping layer material to wrap up formation cable core outside the intertwist body that the 4th step is formed in the way of one-way spiral；The material of described wrapping layer is that polyester is pricked yarn or nylon and pricked yarn or when aramid fiber pricks yarn, and the pitch of wrapping is 5 10 times of cable core diameter；When the material of described wrapping layer is non-woven fabrics or waterstop or polyester belt, along the diametric(al) of cable core, it is overlapping that wrapping layer is that preceding layer has with later layer, and the width of overlap is 2 4mm；

6th step: take the material of aramid yarn or glass fiber yarn outer reinforcement and be placed on outside the cable core that the 5th step is formed, and take polrvinyl chloride or polyurethane or nylon or low-smoke halogen-free polyethylene material is coated on outside outer reinforcement and forms restrictive coating；Complete electric power or the manufacture of communication nonconductive optical fiber cable.

Optical cable in overtesting, the present invention has reached the technique effect of 23 times that static minimum bending radius is optic cable diameter, and optical cable is more soft, be more easy to and lay；With this understanding, the fibre-optic additional attenuation maximum in optical cable is only 0.02dB/km；All have employed high fire-retardance material due to restrictive coating, outer reinforcement, interior enhancement Layer, light unit sheath etc., therefore make optical cable be provided with excellent fire resistance, reach the grade of VW-1.

The present invention has following major technique effect: more soft, bending property is more excellent, bending additional attenuation is lower, fire resistance is better.

Accompanying drawing explanation

Fig. 1 is the cross-sectional structure schematic diagram of the invention process example 1.

Fig. 2 is the cross-sectional structure schematic diagram of the invention process example 2.

Fig. 3 is the cross-sectional structure schematic diagram of the invention process example 3.

Fig. 4 is the cross-sectional structure schematic diagram of the invention process example 4.

Fig. 5 is the cross-sectional structure schematic diagram of the invention process example 5.

Fig. 6 is the cross-sectional structure schematic diagram of the invention process example 6.

Fig. 7 is the cross-sectional structure schematic diagram of the invention process example 7.

Detailed description of the invention

Embodiment 1

Ask for an interview Fig. 1, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement 4 outside cable core and outer reinforcement is enveloped restrictive coating 5；It is characterized in that, cable core is by six the outer light unit 1 being centrally located outside reinforcement 2 and is constituted by the wrapping layer 3 that all outer light unit are wrapped up, the light unit sheath 13 that described outer light unit is coated on the interior enhancement Layer 12 outside tight tube fiber by tight tube fiber 11, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that described outer light unit is not limited to six, can be also any number of no less than three.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that described outer light unit is by the way of one-way spiral is stranded or to be coated in the way of SZ is stranded outside the reinforcement of center.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that the material of described wrapping layer is that yarn pricked by polyester or yarn pricked by nylon or aramid fiber pricks yarn or non-woven fabrics or waterstop or polyester belt, and described wrapping layer is to wrap up in the way of one-way spiral.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that the material of described wrapping layer is that polyester is pricked yarn or nylon and pricked yarn or when aramid fiber pricks yarn, and the pitch of wrapping is 5 10 times of cable core diameter；When the material of described wrapping layer is non-woven fabrics or waterstop or polyester belt, along the diametric(al) of cable core, it is overlapping that wrapping layer is that preceding layer has with later layer, and the width of overlap is 2 4mm.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that the material of described center reinforcement is aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that the material of described outer reinforcement is aramid yarn or PBO or glass fiber yarn.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that the material of described restrictive coating is polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that the material of described interior enhancement Layer is aramid yarn or PBO or glass fiber yarn.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that the material of described smooth unit sheath is polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that described bend resistance optical fibers is G.657 type.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that the material of described bending resistance fold is polrvinyl chloride or fluoroplastics.

Electric power described above or communication nonconductive optical fiber cable, it is characterised in that its manufacture method comprises the step being sequentially carried out:

Embodiment 2

Ask for an interview Fig. 2, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement 4 outside cable core and outer reinforcement is enveloped restrictive coating 5；It is characterized in that, cable core is made up of six the outer light unit 1 being centrally located outside reinforcement 2, the light unit sheath 13 that described outer light unit is coated on the interior enhancement Layer 12 outside tight tube fiber by tight tube fiber 11, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers.

null4th step: take aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever is placed in the central canal of cabling device，And at least three outer light unit formed in the 3rd step is inserted in the peripheral tube of cabling device，Peripheral tube is symmetrically distributed in outside central canal，Axis direction along central canal draws aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever，Simultaneously，Peripheral tube is made to make relative to central canal to rotate forward the motion stopping reversion stopping，And draw outer light unit together in the direction of aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever motion，Outer light cell distribution is made to form cable core outside aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever，Wherein，Rotate forward、The time of reversion is equal，Next action is entered when the speed that peripheral tube rotates is zero；The speed that speed and the aramid yarn rope of the traction of outer light unit or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever move is the same, and the speed of rotating forward is 2-4 times of hauling speed；Every peripheral tube of cabling device is only placed an outer light unit；

5th step: take the material of aramid yarn or glass fiber yarn outer reinforcement and be placed on outside the cable core that the 4th step is formed, and take polrvinyl chloride or polyurethane or nylon or low-smoke halogen-free polyethylene material is coated on outside outer reinforcement and forms restrictive coating；Complete electric power or the manufacture of communication nonconductive optical fiber cable.

Embodiment 3

Ask for an interview Fig. 3, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement 4 outside cable core and outer reinforcement is enveloped restrictive coating 5；It is characterized in that, cable core is by six the outer light unit 1 being distributed in outside internal layer light unit and is constituted by the wrapping layer 3 that all outer light unit are wrapped up, the light unit sheath 13 that described outer light unit is coated on the interior enhancement Layer 12 outside tight tube fiber by tight tube fiber 11, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers；Described layer light unit and outer light unit have identical structure.

3rd step: taking polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene extrusion molding is coated on outside the interior enhancement Layer that second step is formed and forms light unit sheath, wherein, the diameter of light unit sheath is 1.8 2.5mm；Complete the manufacture of outer light unit；Undertaken cutting at least four by outer light unit；

4th step: take one of them the outer light unit formed in the 3rd step and be placed in the central canal of cabling device, become internal layer light unit；And other the multiple outer light unit formed in the 3rd step are inserted in the peripheral tube of cabling device, peripheral tube is symmetrically distributed in outside central canal, axis direction along central canal draws internal layer light unit, simultaneously, peripheral tube is made to make relative to central canal to rotate forward the motion stopping reversion stopping, and draw outer light unit together in the direction of internal layer light unit motion, outer light cell distribution is made to form intertwist body outside internal layer light unit, wherein, the time rotate forward, reversed is equal, enters next action when the speed that peripheral tube rotates is zero；The speed of outer light unit traction is the same with the speed of internal layer light unit motion, and the speed of rotating forward is 2-4 times of hauling speed；Every peripheral tube of cabling device is only placed an outer light unit；

Embodiment 4

Ask for an interview Fig. 4, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement 4 outside cable core and outer reinforcement is enveloped restrictive coating 5；It is characterized in that, cable core is by 1, gasket for packing 7 of five the outer light unit being centrally located outside reinforcement 2 and is constituted by the wrapping layer 3 that all outer light unit and gasket for packing are wrapped up, the light unit sheath 13 that described outer light unit is coated on the interior enhancement Layer 12 outside tight tube fiber by tight tube fiber 11, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that described outer light unit is not limited to five, can be also any number of no less than two；Gasket for packing at least one.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that the material of described gasket for packing is polypropylene or polyethylene.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that described gasket for packing is not limited to one, can be also multiple.Routinely, gasket for packing in this enforcement enforcement can omit, so can save cost, reduce manufacturing procedure etc., but this is based on lot-size and produces, in order to realize the unification of external diameter, punctual delivery, not need frequent more mold exchange etc., when manufacturing small lot, consider integrated cost, making the structure with gasket for packing and be likely to lower, therefore, the existence of the structure of this embodiment is also that comparison is rational.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that described outer light unit is not limited to five, can be also any number of no less than three.

3rd step: taking polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene extrusion molding is coated on outside the interior enhancement Layer that second step is formed and forms light unit sheath, wherein, the diameter of light unit sheath is 1.8 2.5mm；Complete the manufacture of outer light unit；Undertaken cutting at least two by outer light unit；

null4th step: take aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever is placed in the central canal of cabling device，And the multiple outer light unit formed in the 3rd step and the gasket for packing made by polypropylene or polyethylene are inserted in the peripheral tube of cabling device，Peripheral tube is symmetrically distributed in outside central canal，Axis direction along central canal draws aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever，Simultaneously，Peripheral tube is made to make relative to central canal to rotate forward the motion stopping reversion stopping，And draw outer light unit and gasket for packing together in the direction of aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever motion，Make outer light unit and gasket for packing be distributed in outside aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever and form intertwist body，Wherein，Rotate forward、The time of reversion is equal，Next action is entered when the speed that peripheral tube rotates is zero；The speed that speed and the aramid yarn rope of outer light unit and gasket for packing traction or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever move is the same, and the speed of rotating forward is 2-4 times of hauling speed；Every peripheral tube of cabling device is only placed an outer light unit or a gasket for packing；

Embodiment 5

Ask for an interview Fig. 5, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement 4 outside cable core and outer reinforcement is enveloped restrictive coating 5；It is characterized in that, cable core is made up of five the outer light unit 1 being centrally located outside reinforcement 2, the light unit sheath 13 that described outer light unit is coated on the interior enhancement Layer 12 outside tight tube fiber by tight tube fiber 11, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers.

Electric power in this embodiment or communication nonconductive optical fiber cable, with the manufacture method in embodiment 1.

Embodiment 6

Ask for an interview Fig. 6, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement 4 outside cable core and outer reinforcement is enveloped restrictive coating 5；It is characterized in that, cable core is constituted by four outer light unit the 1, first power transmission unit the 8, second power transmission unit 9 being centrally located outside reinforcement 2 and by the wrapping layer 3 that all outer light unit and the first power transmission unit and the second power transmission unit are wrapped up, the light unit sheath 13 that described outer light unit is coated on the interior enhancement Layer 12 outside tight tube fiber by tight tube fiber 11, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers；Described first power transmission unit is made up of the first conductor 81, the first insulating barrier 82 of being enveloped by the first conductor, second power transmission unit is made up of the second conductor 91, the second insulating barrier 92 of being enveloped by the second conductor, the first power transmission unit and the second power transmission unit placed adjacent.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that described outer light unit is not limited to four, can be also one or other are multiple；When outer light unit has multiple, outer light unit is side by side placed.

Further, a kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that described power transmission unit is not limited to two, can be also that other are multiple；When power transmission unit has multiple, power transmission unit is side by side placed.

3rd step: taking polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene extrusion molding is coated on outside the interior enhancement Layer that second step is formed and forms light unit sheath, wherein, the diameter of light unit sheath is 1.8 2.5mm；Complete the manufacture of outer light unit；Undertaken cutting into multiple if desired by outer light unit；

null4th step: take aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever is placed in the central canal of cabling device，Take at least two power transmission unit、And at least one the outer light unit formed in the 3rd step is inserted in the peripheral tube of cabling device，Peripheral tube is symmetrically distributed in outside central canal，Axis direction along central canal draws aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever，Simultaneously，Peripheral tube is made to make relative to central canal to rotate forward the motion stopping reversion stopping，And draw outer light unit and power transmission unit together in the direction of aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever motion，Make outer light unit and power transmission unit be distributed in outside aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever and form intertwist body，Wherein，Rotate forward、The time of reversion is equal，Next action is entered when the speed that peripheral tube rotates is zero；The speed that speed and the aramid yarn rope of outer light unit and power transmission unit traction or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever move is the same, and the speed of rotating forward is 2-4 times of hauling speed；Described power transmission unit is made up of power transmission conductor and the insulating barrier that is coated on outside power transmission conductor；Outer light unit is side by side placed when having multiple, side by side places when power transmission unit has multiple；Every peripheral tube of cabling device is only placed an outer light unit or a power transmission unit；

Embodiment 7

Ask for an interview Fig. 7, a kind of nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement 4 outside cable core and outer reinforcement is enveloped restrictive coating 5；It is characterized in that, cable core is constituted by two outer light unit, 9, two gasket for packings 7 of the 1, first power transmission unit the 8, second power transmission unit being centrally located outside reinforcement 2 and by the wrapping layer 3 that all outer light unit, the first power transmission unit, the second power transmission unit and two gasket for packings are wrapped up, the light unit sheath 13 that described outer light unit is coated on the interior enhancement Layer 12 outside tight tube fiber by tight tube fiber 11, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers；Described first power transmission unit is made up of the first conductor 81, the first insulating barrier 82 of being enveloped by the first conductor, second power transmission unit is made up of the second conductor 91, the second insulating barrier 92 of being enveloped by the second conductor, first power transmission unit and the second power transmission unit placed adjacent, two outer light unit placed adjacent, outer light unit is intercepted by two gasket for packings with power transmission unit to be opened.

A kind of nonconductive optical fiber cable for electric power or communication described above, it is characterised in that described outer light unit is not limited to two, can be also one or other are multiple；When outer light unit has multiple, outer light unit is side by side placed.

null4th step: take aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever is placed in the central canal of cabling device，Take at least two power transmission unit、And at least one the outer light unit formed in the 3rd step and two gasket for packings are inserted in the peripheral tube of cabling device，Peripheral tube is symmetrically distributed in outside central canal，Axis direction along central canal draws aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever，Simultaneously，Peripheral tube is made to make relative to central canal to rotate forward the motion stopping reversion stopping，And draw outer light unit together in the direction of aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever motion、Power transmission unit and two gasket for packings，Make outer light unit、Power transmission unit and two gasket for packings are distributed in outside aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever and form intertwist body，Wherein，Rotate forward、The time of reversion is equal，Next action is entered when the speed that peripheral tube rotates is zero；The speed of outer light unit, power transmission unit and two gasket for packing tractions is the same with the speed of aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever motion, and the speed of rotating forward is 2-4 times of hauling speed；Described power transmission unit is made up of power transmission conductor and the insulating barrier that is coated on outside power transmission conductor；Outer light unit is side by side placed when having multiple, side by side places when power transmission unit has multiple, and outer light unit is intercepted into two parts by two gasket for packings with power transmission unit；Every peripheral tube of cabling device is only placed an outer light unit or a power transmission unit；

A kind of nonconductive optical fiber cable for electric power or communication described in above-mentioned embodiment 6 or embodiment 7, it is characterised in that the material of described first conductor is copper or aluminum or alloy, and the first conductor is that the uniconductor between 0.03 0.10mm is stranded by many diameters to be formed；This conductor contributes for the bending radius of the optical cable in embodiment 6,7.

A kind of nonconductive optical fiber cable for electric power or communication described in above-mentioned embodiment 6 or embodiment 7, it is characterised in that the material of described second conductor is copper or aluminum or alloy, and the second conductor is that the uniconductor between 0.03 0.10mm is stranded by many diameters to be formed；This conductor contributes for the bending radius of the optical cable in embodiment 6,7.

A kind of nonconductive optical fiber cable for electric power or communication described in above-mentioned embodiment 6 or embodiment 7, it is characterised in that the material of described first insulating barrier is polrvinyl chloride or low smoke and zero halogen polyethylene or fluoroplastics.

A kind of nonconductive optical fiber cable for electric power or communication described in above-mentioned embodiment 6 or embodiment 7, it is characterised in that the material of described second insulating barrier is polrvinyl chloride or low smoke and zero halogen polyethylene or fluoroplastics.

A kind of nonconductive optical fiber cable for electric power or communication described in any one in above-mentioned embodiment 1,2,4,5,6,7, it is characterised in that described outer light unit is preferably by the way of one-way spiral is stranded or to be coated in the way of SZ is stranded outside the reinforcement of center；Can certainly be that reinforcement parallel mode in center is distributed.

A kind of nonconductive optical fiber cable for electric power or communication described in any one in above-mentioned embodiment 1,3,4,6,7, it is characterized in that the material of described wrapping layer is that yarn pricked by polyester or yarn pricked by nylon or aramid fiber pricks yarn or non-woven fabrics or waterstop or polyester belt, described wrapping layer is to wrap up in the way of one-way spiral.

Further, a kind of nonconductive optical fiber cable for electric power or communication described in any of the above-described embodiment, it is characterised in that the material of described wrapping layer is that polyester is pricked yarn or nylon and pricked yarn or when aramid fiber pricks yarn, and the pitch of wrapping is 5 10 times of cable core diameter；When the material of described wrapping layer is non-woven fabrics or waterstop or polyester belt, along the diametric(al) of cable core, it is overlapping that wrapping layer is that preceding layer has with later layer, and the width of overlap is 2 4mm.

A kind of nonconductive optical fiber cable for electric power or communication described in any of the above-described embodiment, it is characterised in that the material of described center reinforcement is aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever.

A kind of nonconductive optical fiber cable for electric power or communication described in any of the above-described embodiment, it is characterised in that the material of described outer reinforcement is aramid yarn or PBO or glass fiber yarn.

A kind of nonconductive optical fiber cable for electric power or communication described in any of the above-described embodiment, it is characterised in that the material of described restrictive coating is polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene.

A kind of nonconductive optical fiber cable for electric power or communication described in any of the above-described embodiment, it is characterised in that the material of described interior enhancement Layer is aramid yarn or PBO or glass fiber yarn.

A kind of nonconductive optical fiber cable for electric power or communication described in any of the above-described embodiment, it is characterised in that the material of described smooth unit sheath is polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene.

A kind of nonconductive optical fiber cable for electric power or communication described in any of the above-described embodiment, it is characterised in that described bend resistance optical fibers is G.657 type.

A kind of nonconductive optical fiber cable for electric power or communication described in any of the above-described embodiment, it is characterised in that the material of described bending resistance fold is polrvinyl chloride or fluoroplastics or politef.

A kind of described in any of the above-described embodiment has electric power or the communication nonconductive optical fiber cable of wrapping layer, it is characterised in that the diameter of described optical cable is 8mm 11mm；Representative value is 10mm.

A kind of described in any of the above-described embodiment has electric power or the communication nonconductive optical fiber cable of wrapping layer, it is characterised in that the diameter range of described bending resistance fold is: 0.40mm 1.20mm；Representative value is 0.45mm, 0.60mm, 0.80mm, 0.90mm, 1.0mm, 1.2mm.

Heretofore described bend resistance optical fibers, it is not limited to G.657 type recited above, adopt following bend resistance optical fibers can reach better anti-folding, bending resistance, antitorque technique effect: described bend resistance optical fibers, include fibre core, be positioned at fibre core outside covering, be positioned at the coat outside covering, described core diameter is 8.0～10.1 μm, cladding diameter is 160～180 μm, fibre core/cald concentricity error≤0.6 μm, non-circularity of cladding≤1.0%, coat diameter is 235～250 μm；Described bend resistance optical fibers is loose after 100 circles with the bending radius of 15mm, 1310nm wavelength additional attenuation≤0.03dB/Km, 1383nm wavelength additional attenuation≤0.03dB/Km, 1550nm wavelength additional attenuation≤0.05dB/Km, 1625nm wavelength additional attenuation≤0.05dB/Km；Appoint and take the bend resistance optical fibers that a segment length is not less than 100cm, by bend resistance optical fibers two ends simultaneously equidirectional with the speed that is not more than 5m/s through internal diameter be 1mm, length for after the cylindrical hole of 10cm, bend resistance optical fibers does not rupture；Appointing and take the bend resistance optical fibers that a segment length is 98cm 102cm, fixed bend resistance optical fibers one end, bend resistance optical fibers is wrapped on the zinc bar that diameter is 1mm by the traction other end, and bend resistance optical fibers does not rupture；Appoint and take the bend resistance optical fibers that a segment length is 98cm 102cm, bend resistance optical fibers one end is fixed, the other end hangs weight 10N, and by bend resistance optical fibers with positive 360 degree, stop, anti-360 degree for a circulation, speed is 30 circulation/s, after continuous 1000 circulations, bend resistance optical fibers does not rupture；In described bend resistance optical fibers, the refractive index of the refractive index > coat of the refractive index > covering of fibre core；Described covering by weight, is made up of following raw material: polyvinyl acetate: 10～20 parts；Diethyl phthalate: 20～24 parts；Acrylic acid organic siliconresin: 30～40 parts；Polyurethane: 15～25 parts；Acrylic acid epoxy resin: 10～20 parts；Acrylic polyurethane resin: 9～14 parts；Acetone: 1～2 part；Sodium benzoate: 1～2 part；Polyethylene: 5～8 parts；Polymeric sodium metaphosphate.: 1～2 part；Methyl hydroxybenzoate: 0.3～0.5 part.

In above-mentioned bend resistance optical fibers, covering by weight, by following raw material form time reach optimum performance: polyvinyl acetate: 15 parts；Diethyl phthalate: 22 parts；Acrylic acid organic siliconresin: 35 parts；Polyurethane: 20 parts；Acrylic acid epoxy resin: 15 parts；Acrylic polyurethane resin: 12 parts；Acetone: 1.5 parts；Sodium benzoate: 1.5 parts；Polyethylene: 6.5 parts；Polymeric sodium metaphosphate.: 1.5 parts；Methyl hydroxybenzoate: 0.4 part.

In above-mentioned bend resistance optical fibers, covering by weight, by following raw material form time reach preferably performance: polyvinyl acetate: 18 parts；Diethyl phthalate: 20 parts；Acrylic acid organic siliconresin: 36 parts；Polyurethane: 22 parts；Acrylic acid epoxy resin: 16 parts；Acrylic polyurethane resin: 13 parts；Acetone: 2 parts；Sodium benzoate: 1 part；Polyethylene: 7 parts；Polymeric sodium metaphosphate.: 2 parts；Methyl hydroxybenzoate: 0.5 part.

Optical fiber in the above-mentioned embodiment of the present invention and optical fiber property of the prior art have been done contrast by applicant, each embodiment and optical fiber of the prior art have taken 200 as sampling test, narration is convenient, be 1#, more excellent formula be 2#, on a large scale formula by optimization formula it is 3#, of the prior art G.652B for 4#, be G.652D 6#, G657B3 be 7# for 5#, G657A2, test result is as follows, and wherein " √ " represents that optical fiber is unbroken, and " X " represents fibercuts；Whether rupture, tested by optical time domain reflectometer (OTDR) and visible power instrument.

Can drawing from upper table, the bend resistance optical fibers in the application has excellent counter-bending, bend resistance, low bending radius performance energy.

In the present invention, owing to wrapping up the existence of layer so that the structure of optical cable is more stable, at optical cable construction, when especially alternating bending, winding, torsion, still can keep good optics, machinery, ambient temperature performance.

It is high that manufacture method in the present invention has the conforming product rate being prone to grasp, prepare, equipment investment is few etc. Advantageous Effects.

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

Claims

1., for a nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement outside cable core and outer reinforcement is enveloped restrictive coating；It is characterized in that, cable core is by least three outer light unit being distributed in outside internal layer light unit and is constituted by the wrapping layer that all outer light unit are wrapped up, the light unit sheath that described outer light unit is coated on the interior enhancement Layer outside tight tube fiber by tight tube fiber, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers；Described layer light unit and outer light unit have identical structure；Described bend resistance optical fibers is G.657 type or described bend resistance optical fibers, include fibre core, be positioned at fibre core outside covering, be positioned at the coat outside covering, described core diameter is 8.0～10.1 μm, cladding diameter is 160～180 μm, fibre core/cald concentricity error≤0.6 μm, non-circularity of cladding≤1.0%, coat diameter is 235～250 μm；Described bend resistance optical fibers is loose after 100 circles with the bending radius of 15mm, 1310nm wavelength additional attenuation≤0.03dB/Km, 1383nm wavelength additional attenuation≤0.03dB/Km, 1550nm wavelength additional attenuation≤0.05dB/Km, 1625nm wavelength additional attenuation≤0.05dB/Km；Appoint and take the bend resistance optical fibers that a segment length is not less than 100cm, by bend resistance optical fibers two ends simultaneously equidirectional with the speed that is not more than 5m/s through internal diameter be 1mm, length for after the cylindrical hole of 10cm, bend resistance optical fibers does not rupture；Appointing and take the bend resistance optical fibers that a segment length is 98cm 102cm, fixed bend resistance optical fibers one end, bend resistance optical fibers is wrapped on the zinc bar that diameter is 1mm by the traction other end, and bend resistance optical fibers does not rupture；Appoint and take the bend resistance optical fibers that a segment length is 98cm 102cm, bend resistance optical fibers one end is fixed, the other end hangs weight 10N, and by bend resistance optical fibers with positive 360 degree, stop, anti-360 degree for a circulation, speed is 30 circulation/s, after continuous 1000 circulations, bend resistance optical fibers does not rupture；In described bend resistance optical fibers, the refractive index of the refractive index > coat of the refractive index > covering of fibre core；Described covering by weight, is made up of following raw material: polyvinyl acetate: 10～20 parts；Diethyl phthalate: 20～24 parts；Acrylic acid organic siliconresin: 30～40 parts；Polyurethane: 15～25 parts；Acrylic acid epoxy resin: 10～20 parts；Acrylic polyurethane resin: 9～14 parts；Acetone: 1～2 part；Sodium benzoate: 1～2 part；Polyethylene: 5～8 parts；Polymeric sodium metaphosphate.: 1～2 part；Methyl hydroxybenzoate: 0.3～0.5 part.

2., for a nonconductive optical fiber cable for electric power or communication, by cable core, it is positioned at the outer reinforcement outside cable core and outer reinforcement is enveloped restrictive coating；It is characterized in that, cable core is by six the outer light unit being distributed in outside internal layer light unit and is constituted by the wrapping layer that all outer light unit are wrapped up, the light unit sheath that described outer light unit is coated on the interior enhancement Layer outside tight tube fiber by tight tube fiber, extrusion molding, extrusion molding is coated on outside interior enhancement Layer is constituted, and described tight tube fiber is made up of bend resistance optical fibers and the bending resistance fold that is coated on outside bend resistance optical fibers；Described layer light unit and outer light unit have identical structure；Described bend resistance optical fibers is G.657 type or described bend resistance optical fibers, include fibre core, be positioned at fibre core outside covering, be positioned at the coat outside covering, described core diameter is 8.0～10.1 μm, cladding diameter is 160～180 μm, fibre core/cald concentricity error≤0.6 μm, non-circularity of cladding≤1.0%, coat diameter is 235～250 μm；Described bend resistance optical fibers is loose after 100 circles with the bending radius of 15mm, 1310nm wavelength additional attenuation≤0.03dB/Km, 1383nm wavelength additional attenuation≤0.03dB/Km, 1550nm wavelength additional attenuation≤0.05dB/Km, 1625nm wavelength additional attenuation≤0.05dB/Km；Appoint and take the bend resistance optical fibers that a segment length is not less than 100cm, by bend resistance optical fibers two ends simultaneously equidirectional with the speed that is not more than 5m/s through internal diameter be 1mm, length for after the cylindrical hole of 10cm, bend resistance optical fibers does not rupture；Appointing and take the bend resistance optical fibers that a segment length is 98cm 102cm, fixed bend resistance optical fibers one end, bend resistance optical fibers is wrapped on the zinc bar that diameter is 1mm by the traction other end, and bend resistance optical fibers does not rupture；Appoint and take the bend resistance optical fibers that a segment length is 98cm 102cm, bend resistance optical fibers one end is fixed, the other end hangs weight 10N, and by bend resistance optical fibers with positive 360 degree, stop, anti-360 degree for a circulation, speed is 30 circulation/s, after continuous 1000 circulations, bend resistance optical fibers does not rupture；In described bend resistance optical fibers, the refractive index of the refractive index > coat of the refractive index > covering of fibre core；Described covering by weight, is made up of following raw material: polyvinyl acetate: 10～20 parts；Diethyl phthalate: 20～24 parts；Acrylic acid organic siliconresin: 30～40 parts；Polyurethane: 15～25 parts；Acrylic acid epoxy resin: 10～20 parts；Acrylic polyurethane resin: 9～14 parts；Acetone: 1～2 part；Sodium benzoate: 1～2 part；Polyethylene: 5～8 parts；Polymeric sodium metaphosphate.: 1～2 part；Methyl hydroxybenzoate: 0.3～0.5 part.

3. a kind of nonconductive optical fiber cable for electric power or communication according to claim 1 or claim 2, it is characterised in that described outer light unit is by the way of one-way spiral is stranded or to be coated in the way of SZ is stranded outside the reinforcement of center.

4. a kind of nonconductive optical fiber cable for electric power or communication according to claim 3, it is characterized in that the material of described wrapping layer is that yarn pricked by polyester or yarn pricked by nylon or aramid fiber pricks yarn or non-woven fabrics or waterstop or polyester belt, described wrapping layer is to wrap up in the way of one-way spiral.

5. a kind of nonconductive optical fiber cable for electric power or communication according to claim 1 or claim 2 or claim 4, it is characterized in that the material of described wrapping layer is that polyester is pricked yarn or nylon and pricked yarn or when aramid fiber pricks yarn, the pitch of wrapping is 5 10 times of cable core diameter；When the material of described wrapping layer is non-woven fabrics or waterstop or polyester belt, along the diametric(al) of cable core, it is overlapping that wrapping layer is that preceding layer has with later layer, and the width of overlap is 2 4mm.

6. a kind of nonconductive optical fiber cable for electric power or communication according to claim 5, it is characterised in that the material of described center reinforcement is aramid yarn rope or polyethylene gasket for packing or polypropylene gasket for packing or fiberglass-reinforced plastic lever.

7. a kind of nonconductive optical fiber cable for electric power or communication according to claim 6, it is characterised in that the material of described outer reinforcement is aramid yarn or glass fiber yarn.

8. a kind of nonconductive optical fiber cable for electric power or communication according to claim 1 or claim 2 or claim 4 or claim 6 or claim 7, it is characterised in that the material of described restrictive coating is polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene.

9. a kind of nonconductive optical fiber cable for electric power or communication according to claim 8, it is characterised in that the material of described interior enhancement Layer is aramid yarn or glass fiber yarn；The material of described smooth unit sheath is polrvinyl chloride or polyurethane or nylon or low smoke and zero halogen polyethylene；The material of described bending resistance fold is polrvinyl chloride or politef.

10. the nonconductive optical fiber cable for electric power or communication, it is characterised in that its manufacture method comprises the step being sequentially carried out:

The first step: taking bend resistance optical fibers, and be coated with polrvinyl chloride or politef bending resistance fold at its outer extrusion molding and then form tight tube fiber, the thickness of bending resistance fold is 0.10 0.35mm；Polrvinyl chloride or politef use half plsitive mold when extrusion molding, and the die sleeve internal diameter of mould is big 0.1 0.2mm than core rod external diameter；After forming bending resistance fold, tight tube fiber carries out water-bath crystallization through the water bath region of 60 DEG C, 40 DEG C, 25 DEG C, 35 DEG C, be then passed through surface dry up be coiling to tight tube fiber around sale at reduced prices tool on, wherein, to be 1.5-2.5 second, each some time through the water bath region of 40 DEG C of tight tube fiber be each some time through the water bath region of 60 DEG C of tight tube fiber the 1.0-1.5 second, each some time through the water bath region of 25 DEG C of tight tube fiber is the 1.0-1.5 second, each some time through the water bath region of 35 DEG C of tight tube fiber is the 2.0-4.0 second；The tension force of coiling tight tube fiber is 8-10N；Described bend resistance optical fibers is G.657 type or described bend resistance optical fibers, include fibre core, be positioned at fibre core outside covering, be positioned at the coat outside covering, described core diameter is 8.0～10.1 μm, cladding diameter is 160～180 μm, fibre core/cald concentricity error≤0.6 μm, non-circularity of cladding≤1.0%, coat diameter is 235～250 μm；Described bend resistance optical fibers is loose after 100 circles with the bending radius of 15mm, 1310nm wavelength additional attenuation≤0.03dB/Km, 1383nm wavelength additional attenuation≤0.03dB/Km, 1550nm wavelength additional attenuation≤0.05dB/Km, 1625nm wavelength additional attenuation≤0.05dB/Km；Appoint and take the bend resistance optical fibers that a segment length is not less than 100cm, by bend resistance optical fibers two ends simultaneously equidirectional with the speed that is not more than 5m/s through internal diameter be 1mm, length for after the cylindrical hole of 10cm, bend resistance optical fibers does not rupture；Appointing and take the bend resistance optical fibers that a segment length is 98cm 102cm, fixed bend resistance optical fibers one end, bend resistance optical fibers is wrapped on the zinc bar that diameter is 1mm by the traction other end, and bend resistance optical fibers does not rupture；Appoint and take the bend resistance optical fibers that a segment length is 98cm 102cm, bend resistance optical fibers one end is fixed, the other end hangs weight 10N, and by bend resistance optical fibers with positive 360 degree, stop, anti-360 degree for a circulation, speed is 30 circulation/s, after continuous 1000 circulations, bend resistance optical fibers does not rupture；In described bend resistance optical fibers, the refractive index of the refractive index > coat of the refractive index > covering of fibre core；Described covering by weight, is made up of following raw material: polyvinyl acetate: 10～20 parts；Diethyl phthalate: 20～24 parts；Acrylic acid organic siliconresin: 30～40 parts；Polyurethane: 15～25 parts；Acrylic acid epoxy resin: 10～20 parts；Acrylic polyurethane resin: 9～14 parts；Acetone: 1～2 part；Sodium benzoate: 1～2 part；Polyethylene: 5～8 parts；Polymeric sodium metaphosphate.: 1～2 part；Methyl hydroxybenzoate: 0.3～0.5 part；