CN105842803A - Large core number indoor optical cable and preparation method thereof - Google Patents
Large core number indoor optical cable and preparation method thereof Download PDFInfo
- Publication number
- CN105842803A CN105842803A CN201610330718.6A CN201610330718A CN105842803A CN 105842803 A CN105842803 A CN 105842803A CN 201610330718 A CN201610330718 A CN 201610330718A CN 105842803 A CN105842803 A CN 105842803A
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- Prior art keywords
- cable
- cable core
- sheath
- core
- high temperature
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a large core number indoor optical cable and a preparation method thereof. The optical cable comprises a number of cable cores arranged in a sheath. A high temperature resistance low friction material evenly coats around each cable core. Each cable core successively comprises an optical fiber, an aramid fiber layer which is evenly arranged outside the optical fiber and an inner sheath which semi-tightly wraps the aramid fiber layer from the center to the periphery. According to the invention, each cable core is coated by the high temperature low friction material, which reduces the friction coefficient between the cable core and the sheath; the friction between each cable core and the sheath is reduced; the temperature resistance level of each cable core is improved; cable core and sheath adhesion at a high temperature is prevented; each cable core can continue to independently move in the process of temperature cycling; small radius of a bent cable core in the sheath is avoided; the temperature cycling performance is improved; the size of each cable core of the optical cable is greatly reduced; the weight of the whole optical cable is reduced; materials are saved; a tight-buffered optical fiber in a wiring optical cable is replaced; and the strength of the optical cable is improved.
Description
Technical field
The present invention relates to inside cable, be specifically related to a kind of large core number inside cable and method for making thereof.
Background technology
In recent years, along with the development of optical communication technique great-leap-forward, the mankind will realize FTTN, FTTC, FTTZ,
The differentiation of FTTB, FTTH, FTTD communication mode, proposes four nets on the basis of original integration of three networks and melts
Close (four nets refer to telecommunications network, the Internet, cable television network and power network), make broadband access technology continuous
Weed out the old and bring forth the new, thus the requirement to inside cable is more and more higher.
At present, conventional large core number inside cable has optical distribution cable and branched cable, in devices interconnect and building
Space wiring is widely used, but all there is respective deficiency.
For the optical distribution cable with tight tube fiber as cable core, its shortcoming is as follows:
(1) tight sleeve layer and the easy adhesion of sheath in sheath extrusion process；
(2) problem that optical attenuation is bigger than normal easily occurs during high/low temperature；
(3) tight tube fiber does not has enough reinforcement original papers, insufficient strength so that it is cannot realize remote
Use.
For the branched cable with single fiber cable as cable core, its shortcoming is as follows:
(1) branched cable external diameter is universal relatively big, in use needs to occupy big quantity space；
(2) branched cable weight is relatively big, brings inconvenience to construction；
(3) branched cable material requested is many, and cost is high.
And as inside cable, its special use environment determine make material mostly meet nonmetal,
The characteristic of fire-retardant Halogen.And fire-retardant halogen-free material is in sheath extrusion process, easily occur that cable core glues with sheath
Problem even, causes optical transport power higher than Customer Standard, the phenomenon of cable core broken skin even occurs；Meanwhile,
Fire-retardant halogen-free material sheath heat during temperature cycles bounces back and expands with heat and contract with cold obvious, and the temperature difference is bigger
Time drive cable core is moved, owing to cable core rigidity is not enough and sheath frictional force is relatively big, thus cause cable core
Bending radius is too small, causes light decay bigger than normal, it is impossible to meet GB and customer requirement.
Summary of the invention
The technical problem to be solved is to improve large core number inside cable temperature Cycle and subtract
The problem of little cable configuration size.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is to provide a kind of large core number room
Interior optical cable, including the many cable cores being arranged in sheath, every described cable core external surface peripheral uniformly coats
One layer of high temperature resistant low-friction material, described cable core includes optical fiber from center to periphery successively, is uniformly arranged on
The aramid layers of described optical fiber periphery and hemicompact are wrapped in the inner sheath of described aramid layers periphery.
In above-mentioned optical cable, the material of making of described sheath is low smoke halogen-free flame-retardant polyolefin, PVC or TPU,
Described many cable cores are encased after extrusion moulding.
In above-mentioned optical cable, the material of making of described inner sheath is low-smoke halogen-free polyolefin, thermoplastic elastic
Body or polyurethane.
In above-mentioned optical cable, the coefficient of kinetic friction of described high temperature resistant low-friction material is below 0.15.
In above-mentioned optical cable, described high temperature resistant low-friction material is a kind of special resin, uses heat cure
Form be attached to described inner sheath surface.
In above-mentioned optical cable, the overall diameter of every described cable core is between 0.85-1.50mm.
In above-mentioned optical cable, the wall thickness of described inner sheath is between 0.10-0.25mm.
Present invention also offers a kind of large core number inside cable method for making, comprise the following steps:
Step S1, configuration color masterbatch, prepare mould, optical fiber, aramid fiber and spooling equipment, then perform step
Rapid S2；
Step S2, unlatching equipment, arrange extrusion temperature；
Step S3, system for monitoring opening, set monitor system software parameter；
Step S4, wear optical fiber, aramid fiber to extruder, aramid fiber is wrapped in optical fiber periphery；
Step S5, extruder discharge make cable core at one layer of inner sheath of optical fiber periphery extrusion molding of parcel aramid fiber；
Step S6, the overall diameter checking every cable core and inner sheath wall thickness, meet the entrance of making standard
Step S7；Incongruent abandon；
Step S7, draw every cable core and cross high temperature resistant low-friction material, by solidification equipment at every cable
Core outer surface one layer of high temperature resistant low-friction material of coating；
Step S8, performance to every cable core detect, and reach entrance step S9 of performance requirement；
Abandon the cable core that can not reach requirement；
Step S9, by the cable core of defined amount by extruder, at the periphery extrusion molding sheath of all cable cores,
Wrap up all cable cores；
Step S10, it is drawn through spooling equipment, stablizes take-up.
The present invention reduces cable core and sheath by the outer surface high temperature low-friction material at each cable core
Between coefficient of friction, reduce the frictional force between cable core and sheath, increase the temperature resistant grade of cable core, prevent
Cable core sticks together at high temperature with sheath, makes cable core can continue to keep independent during temperature cycles
Mobile, it is to avoid cable core bends inside sheath and causes radius too small, improves its temperature Cycle；With
Time, this kind of optical cable greatly reduces the size of every branched cable (cable core), alleviates whole optical cable
Weight, has saved material, instead of the tight tube fiber in optical distribution cable, adds cable strength.
Accompanying drawing explanation
The structural representation of a kind of large core number inside cable that Fig. 1 provides for the present invention；
Fig. 2 is the structural representation of cable core in the present invention；
The flow chart of a kind of large core number inside cable method for making that Fig. 3 provides for the present invention.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the present invention is described in detail.
As it is shown in figure 1, a kind of large core number inside cable that the present invention provides, including being arranged in sheath 1
Many cable cores 2；
As in figure 2 it is shown, every cable core 2 includes optical fiber 3 from center to periphery successively, is uniformly arranged on light
The aramid layers 4 of fine 3 peripheries and hemicompact are wrapped in the inner sheath 5 of aramid layers 4 periphery, outside every cable core 2
Surface (surface of inner sheath 5) the most uniformly one layer of high temperature resistant low-friction material 6 of coating.
In the present invention, the material of making of sheath 1 is low smoke halogen-free flame-retardant polyolefin, PVC (polychlorostyrene second
Alkene) or TPU (Polyurethane Thermoplastic Elastomer rubber) etc., after extrusion moulding, encase many cable cores
2；The material of making of inner sheath 5 is low-smoke halogen-free polyolefin, thermoplastic elastomer (TPE) or polyurethane etc..
The coefficient of kinetic friction of the high temperature resistant low-friction material 6 of the present invention below 0.15, thus avoid with
Sheath 1 adhesion.Usually, high temperature resistant low-friction material 6 is a kind of special resin, uses heat cure
Form be attached to inner sheath 5 surface, reduce the frictional force between inner sheath 5 and sheath 1, prevent cable
Core 2 sticks together with sheath 1.
In the present invention, the overall diameter of every cable core 2 is between 0.85-1.50mm, thus controls whole
The volume of optical cable, the wall thickness of inner sheath 5, between 0.10-0.25mm, has certain tensile strength.
The present invention reduces cable core and sheath by the outer surface high temperature low-friction material at each cable core
Between coefficient of friction, reduce the frictional force between cable core and sheath, increase the temperature resistant grade of cable core, prevent cable
Core sticks together at high temperature with sheath, makes cable core can continue to keep independent shifting during temperature cycles
Dynamic, it is to avoid cable core bends inside sheath and causes radius too small, improves its temperature Cycle；Meanwhile,
This kind of optical cable greatly reduces the size of every branched cable (cable core), alleviates whole optical cable weight,
Save material, instead of the tight tube fiber in optical distribution cable, add cable strength.
As it is shown on figure 3, a kind of large core number inside cable method for making that the present invention provides comprises the following steps:
Step S1, meet the color masterbatch of international chromatograph for cable core configuration, prepare mould, optical fiber, aramid fiber and
Spooling equipment, then performs step S2；
Step S2, unlatching equipment, arrange extrusion temperature；
Step S3, system for monitoring opening, set monitor system software parameter；
Step S4, wear optical fiber, aramid fiber to extruder, aramid fiber is wrapped in optical fiber periphery；
Step S5, extruder discharge make cable core at one layer of inner sheath of optical fiber periphery extrusion molding of parcel aramid fiber；
Step S6, the overall diameter checking every cable core and inner sheath wall thickness, meet the entrance of making standard
Step S7；Incongruent abandon；
Step S7, draw every cable core and cross high temperature resistant low-friction material, by solidification equipment at every cable
Core outer surface one layer of high temperature resistant low-friction material of coating；
Step S8, performance to every cable core detect, and reach entrance step S9 of performance requirement；
Abandon the cable core that can not reach requirement；
Step S9, by the cable core of defined amount by extruder, at the periphery extrusion molding sheath of all cable cores,
Wrap up all cable cores；
Step S10, it is drawn through spooling equipment, stablizes take-up.
Obviously, those skilled in the art the present invention can be carried out various change and modification without deviating from
The spirit and scope of the present invention.So, if these amendments of the present invention and modification belong to present invention power
Profit requires and within the scope of equivalent technologies, then the present invention is also intended to comprise these changes and modification exists
In.
Claims (8)
1. a large core number inside cable, including the many cable cores being arranged in sheath, it is characterised in that
Every described cable core external surface peripheral uniformly coats one layer of high temperature resistant low-friction material, described cable core from
Center includes optical fiber, the aramid layers being uniformly arranged on described optical fiber periphery and hemicompact parcel successively to periphery
Inner sheath in described aramid layers periphery.
2. large core number inside cable as claimed in claim 1, it is characterised in that the system of described sheath
One-tenth material is low smoke halogen-free flame-retardant polyolefin, PVC or TPU, encases described many after extrusion moulding
Cable core.
3. large core number inside cable as claimed in claim 1, it is characterised in that described inner sheath
Making material is low-smoke halogen-free polyolefin, thermoplastic elastomer (TPE) or polyurethane.
4. large core number inside cable as claimed in claim 1, it is characterised in that described high temperature resistant low
The coefficient of kinetic friction of friction material is below 0.15.
5. large core number inside cable as claimed in claim 4, it is characterised in that described high temperature resistant low
Friction material is a kind of special resin, uses the form of heat cure to be attached to described inner sheath surface.
6. large core number inside cable as claimed in claim 1, it is characterised in that every described cable core
Overall diameter between 0.85-1.50mm.
7. large core number inside cable as claimed in claim 1, it is characterised in that described inner sheath
Wall thickness is between 0.10-0.25mm.
8. a large core number inside cable method for making, it is characterised in that comprise the following steps:
Step S1, configuration color masterbatch, prepare mould, optical fiber, aramid fiber and spooling equipment, then perform step
Rapid S2；
Step S2, unlatching equipment, arrange extrusion temperature；
Step S3, system for monitoring opening, set monitor system software parameter；
Step S4, wear optical fiber, aramid fiber to extruder, aramid fiber is wrapped in optical fiber periphery；
Step S5, extruder discharge make cable core at one layer of inner sheath of optical fiber periphery extrusion molding of parcel aramid fiber；
Step S6, the overall diameter checking every cable core and inner sheath wall thickness, meet the entrance of making standard
Step S7；Incongruent abandon；
Step S7, draw every cable core and cross high temperature resistant low-friction material, by solidification equipment at every cable
Core outer surface one layer of high temperature resistant low-friction material of coating；
Step S8, performance to every cable core detect, and reach entrance step S9 of performance requirement；
Abandon the cable core that can not reach requirement；
Step S9, by the cable core of defined amount by extruder, at the periphery extrusion molding sheath of all cable cores,
Wrap up all cable cores；
Step S10, it is drawn through spooling equipment, stablizes take-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330718.6A CN105842803A (en) | 2016-05-18 | 2016-05-18 | Large core number indoor optical cable and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330718.6A CN105842803A (en) | 2016-05-18 | 2016-05-18 | Large core number indoor optical cable and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN105842803A true CN105842803A (en) | 2016-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610330718.6A Pending CN105842803A (en) | 2016-05-18 | 2016-05-18 | Large core number indoor optical cable and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110392856A (en) * | 2017-03-13 | 2019-10-29 | 古河电气工业株式会社 | The manufacturing method of optical cable and optical cable |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765117A (en) * | 2015-04-17 | 2015-07-08 | 江苏亨通光电股份有限公司 | Low-friction wiring leading-in optical cable and manufacturing technique thereof |
| CN104812543A (en) * | 2012-07-03 | 2015-07-29 | 伯宁布什集团有限公司 | High performance silicon based coating compositions |
| CN204964831U (en) * | 2015-09-11 | 2016-01-13 | 烽火通信科技股份有限公司 | A formula that can put in a skylight optical cable for building wiring |
-
2016
- 2016-05-18 CN CN201610330718.6A patent/CN105842803A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812543A (en) * | 2012-07-03 | 2015-07-29 | 伯宁布什集团有限公司 | High performance silicon based coating compositions |
| CN104765117A (en) * | 2015-04-17 | 2015-07-08 | 江苏亨通光电股份有限公司 | Low-friction wiring leading-in optical cable and manufacturing technique thereof |
| CN204964831U (en) * | 2015-09-11 | 2016-01-13 | 烽火通信科技股份有限公司 | A formula that can put in a skylight optical cable for building wiring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110392856A (en) * | 2017-03-13 | 2019-10-29 | 古河电气工业株式会社 | The manufacturing method of optical cable and optical cable |
| US10823930B2 (en) | 2017-03-13 | 2020-11-03 | Furukawa Electric Co., Ltd. | Optical fiber cable and optical fiber cable manufacturing method |
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Application publication date: 20160810 |