CN103217764B - Drop cable - Google Patents

Drop cable Download PDF

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Publication number
CN103217764B
CN103217764B CN201310164083.3A CN201310164083A CN103217764B CN 103217764 B CN103217764 B CN 103217764B CN 201310164083 A CN201310164083 A CN 201310164083A CN 103217764 B CN103217764 B CN 103217764B
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stiffener
intensive aspect
leading
layer
coated
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CN103217764A (en
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沈群华
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Jiangsu Nanfang Communications Technology Co., Ltd.
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JIANGSU NANFANG COMMUNICATIONS TECHNOLOGY Co Ltd
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  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

The invention belongs to the technical field of cables, and in particular relates to a drop cable. The drop cable is characterized by being composed of a curing layer, a reinforcing body parallel to the axis of the curing layer and wrapping the curing layer, and a sheath extruded on the reinforcing body, wherein the curing layer is of a tubular structure, and at least one optical fiber is arranged in the tube; the optical fiber is composed of a fiber core, a wrapping layer wrapping the fiber core and a coating layer wrapping the wrapping layer, or composed of a fiber core, a wrapping layer wrapping the fiber core, a coating layer wrapping the coating layer and a coloring layer cured outside the coating layer; the curing layer is made from polybutylene terephthalate or polypropylene; and the range of the drawing force for drawing the sheath by a length of 100mm from the reinforcing body is [0.2N, 15N]. The drop cable provided by the invention has the main beneficial effects of simplicity in manufacturing, easiness in industrialization and batch production and excellent mechanical performance, environmental performance, bonding performance, bending resistance and torsion resistance, and can be applied to indoor and outdoor occasions.

Description

A kind of leading in cable
the application is application number: 201210103168.6, denomination of invention is: a kind of leading in cable, the applying date are: the divisional application on April 7th, 2012.
Technical field
The invention belongs to technical field of cables, especially relate to a kind of leading in cable.
Background technology
Along with the develop rapidly of infotech, the demand of optical cable grows with each passing day, from the birth of first optical fiber up till now, within the time of short decades, and the transworld all angles of optical-fiber network.In recent years, people are constantly risen for the demand that broadband is wider, and with regard to domestic, existing many operators have carried out free speed-raising for user.Believe, in the near future, optical fiber finally can enter every household.The domestic optical cable for entering user is called leading in cable, current existing standard is the rower YD/1997-2009 butterfly leading in cable of the communications industry, optical fiber is put into sheath by this optical cable, reinforcement is placed in the upper and lower both sides of optical fiber, then sheath is by coated to optical fiber, reinforcement, and the sheath of the arranged on left and right sides of optical fiber has tearing port.Although this optical cable structure is simple, in construction, occurred a large amount of problems, cause a large amount of complaints of user, main cause is: the stress-bearing capability of optical cable is too poor, be too simple and easy to cause the unknown cause of optical fiber to rupture for the protection of optical fiber.For this reason, expect in industry to occur that the product updated is to meet the growing wideband requirements of people.
In addition, although there is the inside cable of YD/T 1258 inside cable series regulation in prior art, in actual applications, be difficult to apply it to outdoor, use as leading in cable; Main cause be between tight tube fiber and reinforcement too lax, and too loose between sheath and reinforcement, make the mechanical property of optical cable, temperature performance not good enough, make when short section of construction, after stripping fiber optic cables, reinforcement and tight tube fiber slip away from sheath.
Summary of the invention
In order to solve the problem, the invention provides a kind of leading in cable, it realizes by the following technical solutions:
A kind of leading in cable, is characterized in that it is by tight tube fiber 1, parallels with tight tube fiber axle and the intensive aspect 2 be coated on tight tube fiber and the sheath 3 be extruded on intensive aspect are formed; Described tight tube fiber is fine by least one basic coloured light, be solidificated in the cured layer 14 outside true qualities optical fiber and the tight sleeve layer 15 be coated on outside cured layer is formed; Described true qualities optical fiber is made up of fibre core 11, the covering 12 be coated on fibre core, the coat 13 be coated on covering.
Leading in cable described above, is characterized in that described intensive aspect is for one or more, when many, is arranged in order and distributes symmetrically outside tight tube fiber circumference; And between adjacent intensive aspect, there is water blocking yarn 4.
Leading in cable described above, when it is characterized in that described true qualities optical fiber is one, cured layer is ultra-violet curing dyed layer; When described true qualities optical fiber is many, cured layer is ultraviolet-curing resin layer.
Any one leading in cable described above, is characterized in that in the length adopting the peeling force of [1N, 3N] to be peeled away from cured layer by tight sleeve layer for being not less than 100mm.
A kind of leading in cable, is characterized in that it is by cured layer 14, parallels with cured layer axle and the intensive aspect 2 be coated on cured layer and the sheath 3 be extruded on intensive aspect are formed; Described cured layer is tubular structure, and has at least one optical fiber in pipe; Described optical fiber be made up of fibre core 11, the covering 12 be coated on fibre core, the coat 13 be coated on covering or by fibre core 11, the covering 12 be coated on fibre core, be coated on coat 13 on covering and the dyed layer be solidificated in outside coat is formed.
Leading in cable described above, is characterized in that described cured layer is polybutylene terephthalate or polypropylene.
Any one leading in cable described above, is characterized in that described intensive aspect is made up of stiffener 21 and the bonding coat 22 be coated on outside stiffener; Stiffener integral coating is lived by bonding coat.
Any one leading in cable described above, is characterized in that the xsect of described stiffener is circular or oval or fan is annular or rectangle.
Any one leading in cable described above, it is characterized in that described intensive aspect be cylindrical cuboid or fan Ring-cylindrical.
Any one leading in cable described above, is characterized in that described intensive aspect is made up of stiffener 21 and the bonding coat 22 that is bonded in stiffener surface; Be bonded in stiffener upper surface for upper tack coat 221, be bonded in stiffener lower surface for lower tack coat 222.
Any one leading in cable described above, is characterized in that described upper tack coat is low-smoke non-halogen flame-retardant tygon or Polyvinylchloride or Low Density Polyethylene or medium density polyethylene or high density polyethylene; Described lower tack coat is Polyvinylchloride.
Any one leading in cable described above, is characterized in that described intensive aspect is cuboid; Described stiffener is also cuboid; On arbitrary xsect, the length of stiffener equals the length of intensive aspect.
Any one leading in cable described above, is characterized in that described stiffener is aramid yarn or glass fiber yarn or aluminium strip or steel band or glass fiber tape.
Any one leading in cable described above, is characterized in that described sheath is low-smoke non-halogen flame-retardant tygon or Polyvinylchloride or Low Density Polyethylene or medium density polyethylene or high density polyethylene.
Any one leading in cable described above, is characterized in that described tight sleeve layer is Polyvinylchloride.
Any one leading in cable described above, is characterized in that to open length be the taking out force scope of 100mm is [0.2N, 15N] from withdrawing intensive aspect by sheath.
In the present invention one class embodiment, intensive aspect is made up of at its outer bonding coat stiffener and integral coating, when sheath and tight sleeve layer are all Polyvinylchloride, bonding coat is also Polyvinylchloride, when producing, only need first intensive aspect to be carried out suitable preheating, when extruding sheath, the bonding coat of intensive aspect just closely sticks into sheath, tight sleeve layer and is structure as a whole, and makes optical cable have superior mechanical property, environmental performance, adhesive property, counter-bending, anti-torsion performance like this; Ensure that the stripping performance of optical cable and the performance of short section of construction simultaneously, make optical cable be applicable to indoor and outdoors.
In the another kind of embodiment of the present invention, intensive aspect is made up of the bonding coat of stiffener and upper and lower bonding, and described upper tack coat has identical material with sheath; Lower tack coat is Polyvinylchloride, identical with tight sleeve layer material; When producing, only need first intensive aspect to be carried out suitable preheating, when extruding sheath, the bonding coat of intensive aspect just closely sticks into sheath, tight sleeve layer and is structure as a whole, and makes optical cable have superior mechanical property, environmental performance, adhesive property, counter-bending, anti-torsion performance like this; Ensure that the stripping performance of optical cable and the performance of short section of construction simultaneously, make optical cable be applicable to indoor and outdoors.
And, because the stiffener in intensive aspect is aramid yarn or glass fiber yarn or aluminium strip or steel band or glass fiber tape, therefore strengthens the intensity of optical cable widely, make optical cable tensile stronger.
Intensive aspect is coated on outside tight tube fiber or cured layer, more effective to the protection of optical fiber, greatly reduces the improper fracture of optical fiber.
The present invention has following main beneficial effect: make simple, easy industrialization, easily batch production, mechanical property, environmental performance, adhesive property, counter-bending, anti-torsion performance is more superior, can be applicable to indoor and outdoors.
Accompanying drawing explanation
Fig. 1 is the perspective view after one section of stripping of the invention process example 1.
Fig. 2 is the fragmentary front view after Fig. 1 amplifies.
Fig. 3 is a kind of perspective view of the intensive aspect used in embodiment 1.
Fig. 4 is the another kind of perspective view of the intensive aspect used in embodiment 1.
Fig. 5 is the fragmentary front view of embodiment 2.
Fig. 6 is a kind of perspective view of the intensive aspect used in the invention process example 3.
Fig. 7 is the front view that Fig. 6 amplifies.
Fig. 8 is the perspective view after one section of stripping of the invention process example 3.
Fig. 9 is the perspective view after one section of stripping of the invention process example 4.
Figure 10 is a kind of perspective view of the intensive aspect used in the invention process example 5.
Figure 11 forthe front view that Figure 10 amplifies.
Figure 12 is the perspective view after one section of stripping of the invention process example 5.
Figure 13 forthe front view that Figure 12 amplifies.
Figure 14 is the perspective view after one section of stripping of the invention process example 6.
Figure 15 forthe front view that Figure 14 amplifies.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
embodiment 1
Ask for an interview Fig. 1 to Fig. 4, a kind of leading in cable, it is characterized in that it is by tight tube fiber 1, parallels with tight tube fiber axle and the intensive aspect 2 be coated on tight tube fiber and the sheath 3 be extruded on intensive aspect are formed; Described tight tube fiber is fine by a basic coloured light, be solidificated in the cured layer 14 outside true qualities optical fiber and the tight sleeve layer 15 be coated on outside cured layer is formed; Described true qualities optical fiber is made up of fibre core 11, the covering 12 be coated on fibre core, the coat 13 be coated on covering; Described intensive aspect is the six roots of sensation and is arranged in order outside tight tube fiber circumference and distributes symmetrically; Cured layer is ultra-violet curing dyed layer; In the length adopting the peeling force of [1N, 3N] to be peeled away from cured layer by tight sleeve layer for being not less than 100mm; Intensive aspect is made up of stiffener 21 and the bonding coat 22 be coated on outside stiffener; Stiffener integral coating is lived by bonding coat; The xsect of stiffener is fan annular; Intensive aspect is fan Ring-cylindrical; Described tight sleeve layer is Polyvinylchloride; Described stiffener is aramid yarn or glass fiber yarn or aluminium strip or steel band or glass fiber tape; Described sheath is Polyvinylchloride; Bonding coat is Polyvinylchloride; By sheath, from withdrawing intensive aspect, to open length be the taking out force scope of 100mm is [0.2N, 15N].
Certainly, leading in cable described above, is characterized in that the xsect of described stiffener also can be circle or oval or rectangle.
Certainly, leading in cable described above, is characterized in that described intensive aspect is cylindrical or cuboid.
embodiment 2
Ask for an interview Fig. 5, and referring to figs. 1 to Fig. 4, a kind of leading in cable, substantially with embodiment 1, difference is have water blocking yarn 4 between adjacent intensive aspect.
embodiment 3
Ask for an interview Fig. 6 to Fig. 8, a kind of leading in cable, it is characterized in that it is by tight tube fiber 1, parallels with tight tube fiber axle and the intensive aspect 2 be coated on tight tube fiber and the sheath 3 be extruded on intensive aspect are formed; Described tight tube fiber is fine by a basic coloured light, be solidificated in the cured layer 14 outside true qualities optical fiber and the tight sleeve layer 15 be coated on outside cured layer is formed; Described true qualities optical fiber is made up of fibre core 11, the covering 12 be coated on fibre core, the coat 13 be coated on covering; Described intensive aspect is one and is coated on outside tight tube fiber circumference; Cured layer is ultra-violet curing dyed layer; In the length adopting the peeling force of [1N, 3N] to be peeled away from cured layer by tight sleeve layer for being not less than 100mm; Intensive aspect is made up of stiffener 21 and the bonding coat 22 be coated on outside stiffener; Stiffener integral coating is lived by bonding coat; The xsect of stiffener is rectangle; Intensive aspect is fan annulated column cuboid; By sheath, from withdrawing intensive aspect, to open length be the taking out force scope of 100mm is [0.2N, 15N].
Certainly, leading in cable described above, is characterized in that the xsect of described stiffener also can be circle or oval or fan annular.
Certainly, leading in cable described above, is characterized in that described intensive aspect is cylindrical or fan Ring-cylindrical.
Certainly, leading in cable described above, described intensive aspect also can be many.
embodiment 4
Ask for an interview Fig. 9, and with reference to figure 6 to Fig. 8, a kind of leading in cable, substantially with embodiment 3, difference is that described true qualities optical fiber is many, and cured layer is ultraviolet-curing resin layer.
In the invention process example 1 to 4, intensive aspect is made up of at its outer bonding coat stiffener and integral coating, when sheath and tight sleeve layer are all Polyvinylchloride, bonding coat is also Polyvinylchloride, when producing, only need first intensive aspect to be carried out suitable preheating, when extruding sheath, the bonding coat of intensive aspect just closely sticks into sheath, tight sleeve layer and is structure as a whole, and makes optical cable have superior mechanical property, environmental performance, adhesive property, counter-bending, anti-torsion performance like this; Ensure that the stripping performance of optical cable and the performance of short section of construction simultaneously, make optical cable be applicable to indoor and outdoors.
embodiment 5
Ask for an interview Figure 10 to Figure 13 and referring to figs. 1 to Fig. 9, a kind of leading in cable, substantially with embodiment 4, difference is: described intensive aspect is made up of stiffener 21 and the bonding coat 22 that is bonded in stiffener surface; Be bonded in stiffener upper surface for upper tack coat 221, be bonded in stiffener lower surface for lower tack coat 222; Described upper tack coat is low-smoke non-halogen flame-retardant tygon or Polyvinylchloride or Low Density Polyethylene or medium density polyethylene or high density polyethylene; Described lower tack coat is Polyvinylchloride; Described intensive aspect is cuboid; Described stiffener is also cuboid; On arbitrary xsect, the length of stiffener equals the length of intensive aspect.
Certainly, leading in cable described above, is characterized in that described stiffener can be aramid yarn or glass fiber yarn or aluminium strip or steel band or glass fiber tape.
Certainly, leading in cable described above, is characterized in that described sheath can be low-smoke non-halogen flame-retardant tygon or Polyvinylchloride or Low Density Polyethylene or medium density polyethylene or high density polyethylene.
embodiment 6
Ask for an interview Figure 14 and Figure 15, and referring to figs. 1 to Figure 13, a kind of leading in cable, it is characterized in that it is by cured layer 14, parallels with cured layer axle and the intensive aspect 2 be coated on cured layer and the sheath 3 be extruded on intensive aspect are formed; Described cured layer is tubular structure, and has at least one optical fiber in pipe; Described optical fiber be made up of fibre core 11, the covering 12 be coated on fibre core, the coat 13 be coated on covering or by fibre core 11, the covering 12 be coated on fibre core, be coated on coat 13 on covering and the dyed layer be solidificated in outside coat is formed; Do not draw dissection schematic diagram, therefore label 11,12,2 does not mark, but can referring to figs. 1 to Figure 13; In the length adopting the peeling force of [1N, 3N] to be peeled away from cured layer by tight sleeve layer for being not less than 100mm; By sheath, from withdrawing intensive aspect, to open length be the taking out force scope of 100mm is [0.2N, 15N].
Leading in cable described above, is characterized in that described cured layer is polybutylene terephthalate or polypropylene.
In the invention process example 5,6, intensive aspect is made up of the bonding coat of stiffener and upper and lower bonding, and described upper tack coat has identical material with sheath; Lower tack coat is Polyvinylchloride, identical with tight sleeve layer material; When producing, only need first intensive aspect to be carried out suitable preheating, when extruding sheath, the bonding coat of intensive aspect just closely sticks into sheath, tight sleeve layer and is structure as a whole, and makes optical cable have superior mechanical property, environmental performance, adhesive property, counter-bending, anti-torsion performance like this; Ensure that the stripping performance of optical cable and the performance of short section of construction simultaneously, make optical cable be applicable to indoor and outdoors.
And, because the stiffener in intensive aspect is aramid yarn or glass fiber yarn or aluminium strip or steel band or glass fiber tape, therefore strengthens the intensity of optical cable widely, make optical cable tensile stronger.
Intensive aspect is coated on outside tight tube fiber or cured layer, more effective to the protection of optical fiber, greatly reduces the improper fracture of optical fiber.
Certainly, in above-mentioned arbitrary embodiment, all Fig. 3, Fig. 4 can be adopted; Fig. 6, Fig. 7; And the intensive aspect in Figure 10, Figure 11.
Certainly, in above-mentioned arbitrary embodiment, true qualities optical fiber can be many, and when many, can also have dyed layer outside true qualities optical fiber.
Any one leading in cable described above, is characterized in that described intensive aspect can be one or more, when many, is arranged in order and distributes symmetrically outside tight tube fiber circumference; And between adjacent intensive aspect, there is water blocking yarn 4.
Any one leading in cable described above, when it is characterized in that described true qualities optical fiber is one, cured layer is ultra-violet curing dyed layer; When described true qualities optical fiber is many, cured layer is ultraviolet-curing resin layer.
Any one leading in cable described above, is characterized in that in the length adopting the peeling force of [1N, 3N] to be peeled away from cured layer by tight sleeve layer for being not less than 100mm.
Any one leading in cable described above, is characterized in that described intensive aspect is made up of stiffener 21 and the bonding coat 22 be coated on outside stiffener; Stiffener integral coating is lived by bonding coat.
Any one leading in cable described above, is characterized in that the xsect of described stiffener is circular or oval or fan is annular or rectangle.
Any one leading in cable described above, it is characterized in that described intensive aspect be cylindrical cuboid or fan Ring-cylindrical.
Any one leading in cable described above, is characterized in that described intensive aspect is made up of stiffener 21 and the bonding coat 22 that is bonded in stiffener surface; Be bonded in stiffener upper surface for upper tack coat 221, be bonded in stiffener lower surface for lower tack coat 222.
Any one leading in cable described above, is characterized in that described upper tack coat is low-smoke non-halogen flame-retardant tygon or Polyvinylchloride or Low Density Polyethylene or medium density polyethylene or high density polyethylene; Described lower tack coat is Polyvinylchloride or the material identical with tight sleeve layer.
Any one leading in cable described above, is characterized in that described intensive aspect is cuboid; Described stiffener is also cuboid; On arbitrary xsect, the length of stiffener equals the length of intensive aspect.
Any one leading in cable described above, is characterized in that described stiffener is aramid yarn or glass fiber yarn or aluminium strip or steel band or glass fiber tape.
Any one leading in cable described above, is characterized in that described sheath is low-smoke non-halogen flame-retardant tygon or Polyvinylchloride or Low Density Polyethylene or medium density polyethylene or high density polyethylene.
Any one leading in cable described above, is characterized in that described tight sleeve layer is Polyvinylchloride.
Any one leading in cable described above, is characterized in that to open length be the taking out force scope of 100mm is [0.2N, 15N] from withdrawing intensive aspect by sheath.
The present invention has following main beneficial effect: make simple, easy industrialization, easily batch production, mechanical property, environmental performance, adhesive property, counter-bending, anti-torsion performance is more superior, can be applicable to indoor and outdoors.
The present invention is not limited to above-mentioned preferred forms, and should be appreciated that design of the present invention can be implemented to use by other various forms, they drop in protection scope of the present invention equally.

Claims (6)

1. a leading in cable, is characterized in that it is by cured layer, parallels with cured layer axle and the intensive aspect be coated on cured layer and the sheath be extruded on intensive aspect are formed; Described cured layer is tubular structure, and has at least one optical fiber in pipe; Described optical fiber be made up of fibre core, the covering be coated on fibre core, the coat be coated on covering or by fibre core, the covering be coated on fibre core, be coated on the coat on covering and the dyed layer be solidificated in outside coat is formed; Described cured layer is polybutylene terephthalate or polypropylene; By sheath, from withdrawing intensive aspect, to open length be the taking out force scope of 100mm is [0.2N, 15N].
2. a kind of leading in cable according to claim 1, is characterized in that described intensive aspect is made up of stiffener and the bonding coat be coated on outside stiffener; Stiffener integral coating is lived by bonding coat.
3. a kind of leading in cable according to claim 2, is characterized in that the xsect of described stiffener is circular or oval or fan is annular or rectangle; Described intensive aspect be cylindrical cuboid or fan Ring-cylindrical.
4. a kind of leading in cable according to claim 1, is characterized in that described intensive aspect is made up of stiffener and the bonding coat that is bonded in stiffener surface; Be bonded in stiffener upper surface for upper tack coat, be bonded in stiffener lower surface for lower tack coat; Described intensive aspect is cuboid; Described stiffener is also cuboid; On arbitrary xsect, the length of stiffener equals the length of intensive aspect.
5. a kind of leading in cable according to claim 4, is characterized in that described upper tack coat is low-smoke non-halogen flame-retardant tygon or Polyvinylchloride or Low Density Polyethylene or medium density polyethylene or high density polyethylene; Described lower tack coat is Polyvinylchloride or the material identical with tight sleeve layer.
6. a kind of leading in cable according to claim 1, is characterized in that described stiffener is aramid yarn or glass fiber yarn or aluminium strip or steel band or glass fiber tape.
CN201310164083.3A 2012-04-07 2012-04-07 Drop cable Active CN103217764B (en)

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Related Parent Applications (1)

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CN 201210103168 Division CN102590967B (en) 2012-04-07 2012-04-07 Leading-in optical cable

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CN103217764B true CN103217764B (en) 2015-06-10

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CN105467538B (en) * 2014-06-26 2018-08-17 江苏华脉光电科技有限公司 A kind of non-metallic optical fiber cables

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US20020099110A1 (en) * 1999-12-30 2002-07-25 Tyson Norlin Radiation-curable coating composition
JP3779895B2 (en) * 2001-07-31 2006-05-31 古河電気工業株式会社 Indoor fiber optic cable
JP2004226871A (en) * 2003-01-27 2004-08-12 Sumitomo Electric Ind Ltd Optical cable
JP5407111B2 (en) * 2007-02-08 2014-02-05 住友電気工業株式会社 Optical cable
US20080285924A1 (en) * 2007-05-15 2008-11-20 Graveston Mark G Optical fiber cables
CN101655591A (en) * 2009-07-24 2010-02-24 苏州聚瑞光电科技有限公司 High-strength fold resistance FTTH rubber-covered wire optical cable

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