WO2019161650A1 - 一种全干式光缆及其制造方法 - Google Patents

一种全干式光缆及其制造方法 Download PDF

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Publication number
WO2019161650A1
WO2019161650A1 PCT/CN2018/102702 CN2018102702W WO2019161650A1 WO 2019161650 A1 WO2019161650 A1 WO 2019161650A1 CN 2018102702 W CN2018102702 W CN 2018102702W WO 2019161650 A1 WO2019161650 A1 WO 2019161650A1
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Prior art keywords
layer
sheath
optical cable
braid
full
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PCT/CN2018/102702
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English (en)
French (fr)
Inventor
白文杰
熊晓蒙
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烽火通信科技股份有限公司
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Application filed by 烽火通信科技股份有限公司 filed Critical 烽火通信科技股份有限公司
Priority to EP18906763.0A priority Critical patent/EP3663821A4/en
Priority to BR112020002997-1A priority patent/BR112020002997A2/pt
Publication of WO2019161650A1 publication Critical patent/WO2019161650A1/zh

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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
    • G02B6/4432—Protective covering with fibre reinforcements
    • 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
    • G02B6/4486—Protective covering

Definitions

  • the present invention relates to the field of optical fiber technologies, and in particular, to a full-dry optical cable and a method of manufacturing the same.
  • the optical fiber cable in the prior art is a light unit, a reinforcing original and a sheath from the inside to the outside.
  • the light unit comprises a loose tube, a plurality of fiber bundles disposed in the loose tube, and the water fiber bundle is filled with water blocking oil.
  • the paste as shown in the patent CN101840044A, is a new type of fiber bundle central tubular cable.
  • communication optical cables can be divided into overhead optical cables, direct buried optical cables, and pipeline optical cables (including air blowing optical cables) according to their construction methods. Due to the convenient construction characteristics of aerial optical cables, they are favored by domestic and foreign operators.
  • the overhead cable is usually fixed on the power pole tower together with the wire and cable, and the pre-twisted wire is often tightly hooped with the cable jacket.
  • the pre-twisted wire will be sheathed.
  • the traction force is generated. Since the reinforcing original is located between the light unit and the sheath, under the action of the traction force, a large friction force between the original member and the sheath is required to prevent the original member and the sheath from sliding relative to each other.
  • the object of the present invention is to provide a full-dry optical cable, in which the reinforcing original is embedded between the two layers of the sheath, and the two layers of the sheath are integrally connected, so that the original and the sheath are not strengthened. Relative sliding occurs, and the structure is more secure in construction traction.
  • An all-dry type optical cable which is a light unit, a first layer sheath, a woven layer having a plurality of meshes, and a second layer sheath, which are reinforced originals, from the inside to the outside
  • the fiber optic cable has a first region in which the first layer of sheath and/or the second layer of sheath extends adjacent to the surface of the woven layer toward the mesh of the woven layer and is embedded in the mesh. And at least a portion of the first region is a second region, wherein the second layer of sheath is embedded in the mesh and integrated with the first layer of sheath, or The first layer of jacket and the second layer of sheath are both embedded in the mesh and joined together.
  • the woven layer is woven from yarn.
  • the yarn material is one or more of aramid fiber, carbon fiber, and glass fiber.
  • the thickness of the first layer sheath is smaller than the thickness of the second layer sheath.
  • the first layer of the sheath and the second layer of the sheath material are one or more of polyethylene, polyvinyl chloride, polyurethane, low-smoke halogen-free plastic LSZH, and nylon.
  • the first layer sheath and the second layer sheath are made of the same material.
  • An embodiment of the present invention further provides a method for manufacturing a full-dry optical cable, in which the extrusion of the first layer of the sheath, the weaving of the braid layer, and the extrusion operation of the second layer of the sheath are sequentially performed on the light unit, and The first layer of jacket and braid are not subjected to a cooling operation prior to completion of the extrusion operation of the second layer of sheath, such that the second layer of sheath is embedded in the mesh of the braid and The first layer of sheaths are joined together, or the first layer of sheath and the second layer of sheath are both embedded in the mesh and then joined together.
  • the steps include:
  • the light unit sequentially passes through a first extruder, a braiding machine and a second extruder, and the first extruder forms the first layer sheath outside the light unit, the knitting machine Woven the yarn on the first layer of sheath, the yarn is woven to form the woven layer, and the second extruder forms the second layer of sheath outside the woven layer, and
  • the second layer of jacket is integrated with the first layer of sheath after being embedded in the mesh of the braid during liquid forming.
  • the thickness of the first layer sheath is smaller than the thickness of the second layer sheath.
  • the light unit After the light unit completes the extrusion operation of the second layer of sheath, the light unit further passes through a cooling device, and the cooling device pairs the first layer sheath and the second layer.
  • the layer jacket is cooled.
  • the woven layer is reinforced original
  • the reinforced original element is embedded between the two layers of the sheath
  • the two layers of the sheath are integrally connected at the mesh position of the woven layer, so that the reinforcing original and the sheath are under construction traction. There is no relative sliding during the process and the structure is more secure.
  • the woven layer of the invention is woven from yarn, and the woven layer formed by the knitting method is relatively easy to realize in the production process, the process is simple, and the production is convenient.
  • FIG. 1 is a schematic structural view of a full-dry optical cable according to an embodiment of the present invention.
  • FIG. 2 is a partial structural view of a braid layer in an embodiment of the present invention.
  • an embodiment of the present invention provides a full-dry optical cable.
  • the optical cable is a light unit 1, a first layer sheath 2, a braid layer 3 having a plurality of meshes, and a first layer from the inside to the outside.
  • a two-layer sheath 4 the braided layer 3 is a reinforced original
  • the cable has a first region, in the first region, the first layer of sheath 2 and/or the second layer of sheath 4 is adjacent to the surface of the woven layer 3 to the woven layer 3
  • the mesh extends and is embedded in the mesh, and at least a portion of the area in the first area is a second area. In the second area, the second layer of sheath 4 is embedded in the mesh and integrated with the first layer of sheath 2, Or the first layer of sheath 2 and the second layer of sheath 4 are both embedded in the mesh and joined together.
  • the braided layer 3 is a reinforcing original
  • the reinforcing original is embedded between the two layers of the sheath
  • the two layers of the sheath are integrally connected at the mesh position of the braid layer, so that the reinforcing original and the sheath are under construction. Relative sliding does not occur during traction and the structure is more secure.
  • the woven layer 3 is woven from the yarn, and the woven layer formed by the knitting method is relatively easy to realize in the production process, the process is simple, and the production is convenient.
  • the yarn material is one or more of aramid fiber, carbon fiber, and glass fiber.
  • Aramid fiber has good mechanical properties and tensile strength; it has excellent flame retardant, heat resistance and fire resistance; it has stable chemical properties, good acid and alkali resistance, and can be applied to acidity or Alkaline application environment, etc.
  • Carbon fiber has many excellent properties. Carbon fiber has high axial strength and modulus, low density, high specific performance, no creep, high temperature resistance in non-oxidizing environment, good fatigue resistance, specific heat and conductivity between non-metal and Between the metals, the coefficient of thermal expansion is small and anisotropic, the corrosion resistance is good, and the X-ray permeability is good. Good electrical and thermal conductivity, good electromagnetic shielding and so on.
  • the advantages of glass fiber are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength.
  • the material of the yarn can be designed according to the application scenario of the optical cable. If the optical cable is used in a place where fire accidents are likely to occur, and the fire performance is high, the aramid fiber is selected, and if the optical cable is applied to the chemical reagent In many occasions, in an environment susceptible to acid or alkaline corrosion, aramid fiber is used. If the cable is used in a scene with more tensile traction or electrical conduction, carbon fiber is used, if the cable is used in an insulating environment. The glass fiber is used, and at the same time, a plurality of different materials can be mixed into the yarn material according to the actual situation, so that the performance can meet more requirements.
  • the thickness of the first layer sheath 2 is smaller than the thickness of the second layer sheath 4, and when the second layer sheath 4 is processed, since the thickness of the first layer sheath 2 is small, softening is likely to occur, and the second layer During the liquid extrusion process of the sheath 4, the liquid second layer sheath 4 is easily adhered to the softened first layer sheath 2, and the softened first layer sheath 2 and the liquid second layer are softened. The sheath 4 is adhered more tightly, so that the reinforcing original can be firmly embedded between the first layer sheath 2 and the second layer sheath 4, and the reinforcing original and the sheath do not slide relative during the construction traction, the structure More secure.
  • first layer of the sheath 2 and the second layer of the sheath 4 are made of one or more of polyethylene, polyvinyl chloride, polyurethane, low-smoke halogen-free plastic LSZH, and nylon. According to the performance requirements of the optical cable, the materials of the first layer sheath 2 and the second layer sheath 4 may be the same or different.
  • the embodiment of the invention further provides a method for manufacturing a full-dry optical cable, in which the extrusion of the first layer sheath 2, the weaving of the braid layer 3, and the extrusion operation of the second layer sheath 4 are sequentially performed on the light unit 1. And before the extrusion operation of the second layer sheath 4 is completed, the first layer sheath 2 and the braid layer 3 are not cooled, so that the second layer sheath 4 is embedded in the mesh of the braid layer 3 and A layer of sheath 2 is integrally connected, or the first layer of sheath 2 and the second layer of sheath 4 are both embedded in the mesh and then integrated.
  • the second layer sheath 4 since the first layer sheath 2 and the braid layer 3 are not cooled before the extrusion operation of the second layer sheath 4 is completed, when the second layer sheath 4 is in the liquid molding process It can be well integrated with the first layer of sheath 2, and is integrated into one body, and the connection is more tight, so that the reinforcing original piece is more tightly embedded between the two layers of sheath, thereby strengthening the original part and the sheath during the construction traction process. There will be no relative sliding in the structure and the structure will be more secure.
  • the method for manufacturing a full-dry optical cable includes the following steps: the light unit 1 sequentially passes through a first extruder, a braiding machine, and a second extruder, and the first extruder forms a first outside the light unit 1 a layer sheath 2, the knitting machine weaves the yarn on the first layer sheath 2, the yarn is woven to form the braid layer 3, the second extruder forms a second layer sheath 4 outside the braid layer 3, and the second The layer sheath 4 is integrated with the first layer sheath 2 after being embedded in the mesh of the braid layer 3 during the liquid molding process.
  • the method for manufacturing the full-dry optical cable of the embodiment further includes the step of: after the light unit 1 passes through the second extruder, that is, after the light unit 1 completes the extrusion operation of the second layer sheath 4, the light unit 1
  • the first layer of sheath 2 and the second layer of sheath 4 are also cooled by a cooling device such that the first layer of sheath 2 and the second layer of sheath 4 are fixedly formed.
  • the thickness of the first layer sheath 2 is smaller than the thickness of the second layer sheath 4, and when the second layer sheath 4 is processed, since the thickness of the first layer sheath 2 is small, softening is likely to occur, and the second layer During the liquid extrusion process of the sheath 4, the liquid second layer sheath 4 is easily adhered to the softened first layer sheath 2, and the softened first layer sheath 2 and the liquid second layer are softened. The sheath 4 is adhered more tightly, so that the reinforcing original can be firmly embedded between the first layer sheath 2 and the second layer sheath 4, and the reinforcing original and the sheath do not slide relative during the construction traction, the structure More secure.
  • the braid layer 3 is woven from the yarn, and the braid formed by the weaving method is relatively easy to realize in the production process, the process is simple, and the production is convenient; meanwhile, since the second is completed
  • the first layer of sheath 2 and the braided layer 3 are not cooled prior to the extrusion operation of the layer sheath 4, so that when the second layer of sheath 4 is well formed with the first layer of sheath during liquid forming
  • the two phases are merged and integrated into one body, and the connection is more tight, so that the reinforcing original is more tightly embedded between the two layers of sheath, thereby strengthening the original member and the sheath without relative sliding during the construction pulling process, when the optical cable is
  • the tightness of the sheath is not properly controlled, and it is not easy to cause relative sliding. Therefore, the production process of the optical cable is not required, and it is easy to produce a qualified optical cable and improve the qualified rate of the optical cable production.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Communication Cables (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

一种全干式光缆，由内到外依次为光单元（1）、第一层护套（2）、具有多个网孔的编织层（3）和第二层护套（4）。编织层（3）为加强元件，光缆具有第一区域，在第一区域内，第一层护套（2）和／或第二层护套（4）靠近编织层（3）的表面向编织层（3）的网孔延伸并嵌入网孔，且第一区域内的至少部分区域为第二区域，在第二区域内，第二层护套（4）嵌入网孔并与第一层护套（2）连成一体，或者第一层护套（2）和第二层护套（4）均嵌入网孔并连成一体。该光缆的加强元件嵌入在两层护套之间，且两层护套连为一体，使得加强元件和护套不会发生相对滑动，在施工牵引中，结构更加牢靠。还提供了光缆的制造方法。

Description

一种全干式光缆及其制造方法 技术领域
本发明涉及光纤技术领域，具体涉及一种全干式光缆及其制造方法。
背景技术
随着光通信近年来跨越式的发展，矿井、油田、海底、电力等各个领域对光缆的需求均不断增加。现有技术中的光缆由内到外依次为光单元、加强原件和护套，光单元包括松套管、设于所述松套管内的若干光纤束，且光纤束之间填充有阻水油膏，如专利CN101840044A一种新型光纤束中心管式光缆所示。
目前通信光缆根据其施工方式可分架空光缆、直埋光缆、管道光缆(含气吹光缆)，由于架空光缆便捷的施工特性，被广大国内外运营商所青睐。
架空光缆在施工过程中，通常使用预绞丝与电线电缆一起固定在电力杆塔上，而预绞丝往往是紧紧地抱箍着光缆护套，在光缆牵引中，预绞丝会对护套产生牵引力，由于加强原件位于光单元和护套之间，在牵引力的作用下，加强原件和护套之间需要较大的摩擦力，才可防止加强原件和护套发生相对滑动。
然而，由于在光缆生产过程中很容易出现护套的松紧度控制不当的情况，导致护套与加强原件摩擦力不够，使得加强原件不能及时受力，产出拉伸不合格的光缆，从而导致架空光缆在施工过程中，加强原件和护套发生相对滑动，对光缆性能影响较大。
发明内容
针对现有技术中存在的缺陷，本发明的目的在于提供一种全干式光缆，加强原件嵌入在两层护套之间，且两层护套连为一体，使得加强原件和护套不会发生相对滑动，在施工牵引中，结构更加牢靠。
为达到以上目的，本发明采取的技术方案是：
一种全干式光缆，所述光缆由内到外依次为光单元、第一层护套、具有多个网孔的编织层和第二层护套，所述编织层为加强原件，所述光缆具有第一区域，在所述第一区域内，所述第一层护套和/或第二层护套靠近所述编织层的表面向编织层的网孔延伸并嵌入所述网孔，且所述第一区域内的至少部分区域为第二区域，在所述第二区域内，所述第二层护套嵌入所述网孔并与所述第一层护套连成一体，或者所述第一层护套和第二层护套均嵌入所述网孔并连成一体。
在上述技术方案的基础上，所述编织层由纱线编织而成。
在上述技术方案的基础上，所述纱线材质为芳纶纤维、碳纤维、玻璃纤维中的一种或几种。
在上述技术方案的基础上，所述第一层护套的厚度小于所述第二层护套的厚度。
在上述技术方案的基础上，所述第一层护套和第二层护套材质均为聚乙烯、聚氯乙烯、聚氨酯、低烟无卤塑料LSZH、尼龙中的一种或几种。
在上述技术方案的基础上，所述第一层护套和第二层护套材质相同。
本发明实施例还提供了一种全干式光缆的制造方法，所述光单元上依次完成第一层护套的挤出、编织层的编织、以及第二层护套的挤出操作，且在完成第二层护套的挤出操作前，并未对所述第一层护套 和编织层进行冷却操作，使得所述第二层护套嵌入所述编织层的网孔后与所述第一层护套连成一体，或者所述第一层护套和第二层护套均嵌入所述网孔后连成一体。
在上述技术方案的基础上，具体包括步骤：
所述光单元依次经过第一台挤出机、编织机和第二台挤出机，所述第一台挤出机在所述光单元外形成所述第一层护套，所述编织机将纱线编织在所述第一层护套上，所述纱线编织形成所述编织层，所述第二台挤出机在所述编织层外形成所述第二层护套，且所述第二层护套在液体成型过程中嵌入所述编织层的网孔后与所述第一层护套连成一体。
在上述技术方案的基础上，所述第一层护套的厚度小于所述第二层护套的厚度。
在上述技术方案的基础上，在所述光单元完成第二层护套的挤出操作后，所述光单元还经过一冷却装置，所述冷却装置对所述第一层护套和第二层护套进行冷却。
与现有技术相比，本发明的优点在于：
本发明的全干式光缆，编织层为加强原件，加强原件嵌入在两层护套之间，且两层护套在编织层的网孔位置连成一体，使得加强原件和护套在施工牵引过程中不会发生相对滑动，结构更加牢靠。
本发明的编织层由纱线编织而成，此种编织方式形成的编织层在生产工艺上比较容易实现，工艺简单，生产方便。
附图说明
图1为本发明实施例中全干式光缆的结构示意图；
图2为本发明实施例中编织层的部分结构示意图。
图中：1-光单元，2-第一层护套，3-编织层，4-第二层护套。
具体实施方式
以下结合附图及实施例对本发明作进一步详细说明。
参见图1和图2所示，本发明实施例提供一种全干式光缆，光缆由内到外依次为光单元1、第一层护套2、具有多个网孔的编织层3和第二层护套4，编织层3为加强原件，光缆具有第一区域，在第一区域内，第一层护套2和/或第二层护套4靠近编织层3的表面向编织层3的网孔延伸并嵌入网孔，且第一区域内的至少部分区域为第二区域，在第二区域内，第二层护套4嵌入网孔并与第一层护套2连成一体，或者第一层护套2和第二层护套4均嵌入网孔并连成一体。
本发明的全干式光缆，编织层3为加强原件，加强原件嵌入在两层护套之间，且两层护套在编织层的网孔位置连成一体，使得加强原件和护套在施工牵引过程中不会发生相对滑动，结构更加牢靠。
进一步地，编织层3由纱线编织而成，此种编织方式形成的编织层在生产工艺上比较容易实现，工艺简单，生产方便。
优选地，纱线材质为芳纶纤维、碳纤维、玻璃纤维中的一种或几种。芳纶纤维具有良好的机械性能，抗拉伸；且具有优异的阻燃、耐热性能，防火性能好；以及具有稳定的化学性能，耐酸性和耐碱性均较好，可以适用于酸性或碱性的应用环境等。碳纤维具有许多优良性能，碳纤维的轴向强度和模量高，密度低、比性能高，无蠕变，非氧化环境下耐超高温，耐疲劳性好，比热及导电性介于非金属和金属之间，热膨胀系数小且具有各向异性，耐腐蚀性好，X射线透过性好。良好的导电导热性能、电磁屏蔽性好等。玻璃纤维的优点是绝缘性好、耐热性强、抗腐蚀性好，机械强度高。
在本实施例中，可以根据光缆的应用场景设计纱线的材质，若该光缆应用于容易发生火灾事故的地方，对防火性能要求较高，则选用 芳纶纤维，若该光缆应用于化学试剂较多的场合，容易受到酸性或碱性腐蚀的环境中，则选用芳纶纤维，若该光缆应用于拉伸牵引较多或要求导电的场景，则选用碳纤维，若该光缆应用于绝缘环境下，则选用玻璃纤维，同时，也可以根据实际情况，选用多种不同的材质混合为纱线材质，使得性能可以满足更多要求。
进一步地，第一层护套2的厚度小于第二层护套4的厚度，在加工第二层护套4时，由于第一层护套2的厚度较小，容易发生软化，第二层护套4液体挤压成型过程中，液体状的第二层护套4容易和软化后的第一层护套2发生粘连，且越软化的第一层护套2和液体状的第二层护套4粘连更紧密，从而使得加强原件可以牢固地嵌入在第一层护套2和第二层护套4之间，且加强原件和护套在施工牵引过程中不会发生相对滑动，结构更加牢靠。
进一步地，第一层护套2和第二层护套4材质均为聚乙烯、聚氯乙烯、聚氨酯、低烟无卤塑料LSZH、尼龙中的一种或几种。根据光缆性能需求，第一层护套2和第二层护套4材质可以相同，也可以不同。
本发明实施例还提供了一种全干式光缆的制造方法，光单元1上依次完成第一层护套2的挤出、编织层3的编织、以及第二层护套4的挤出操作，且在完成第二层护套4的挤出操作前，并未对第一层护套2和编织层3进行冷却操作，使得第二层护套4嵌入编织层3的网孔后与第一层护套2连成一体，或者第一层护套2和第二层护套4均嵌入网孔后连成一体。
本实施例中，由于在完成第二层护套4的挤出操作前，并未对第一层护套2和编织层3进行冷却操作，使得当第二层护套4在液体成型过程中可以很好地与第一层护套2相融合，并连成一体，而且连接 更加紧密，使得加强原件更加紧固地嵌入在两层护套之间，进而加强原件和护套在施工牵引过程中不会发生相对滑动，结构更加牢靠。
具体地，全干式光缆的制造方法包括步骤如下：光单元1依次经过第一台挤出机、编织机和第二台挤出机，第一台挤出机在光单元1外形成第一层护套2，编织机将纱线编织在第一层护套2上，纱线编织形成编织层3，第二台挤出机在编织层3外形成第二层护套4，且第二层护套4在液体成型过程中嵌入编织层3的网孔后与第一层护套2连成一体。
本实施例的全干式光缆的制造方法，还包括步骤：在光单元1经过第二台挤出机后，即在光单元1完成第二层护套4的挤出操作后，光单元1还经过一冷却装置，冷却装置对第一层护套2和第二层护套4进行冷却，以便第一层护套2和第二层护套4固定成型。
进一步地，第一层护套2的厚度小于第二层护套4的厚度，在加工第二层护套4时，由于第一层护套2的厚度较小，容易发生软化，第二层护套4液体挤压成型过程中，液体状的第二层护套4容易和软化后的第一层护套2发生粘连，且越软化的第一层护套2和液体状的第二层护套4粘连更紧密，从而使得加强原件可以牢固地嵌入在第一层护套2和第二层护套4之间，且加强原件和护套在施工牵引过程中不会发生相对滑动，结构更加牢靠。
本发明的全干式光缆的制造方法，编织层3由纱线编织而成，此种编织方式形成的编织层在生产工艺上比较容易实现，工艺简单，生产方便；同时，由于在完成第二层护套4的挤出操作前，并未对第一层护套2和编织层3进行冷却操作，使得当第二层护套4在液体成型过程中可以很好地与第一层护套2相融合，并连成一体，而且连接更加紧密，使得加强原件更加紧固地嵌入在两层护套之间，进而加强原 件和护套在施工牵引过程中不会发生相对滑动，当光缆的护套松紧度控制不当，也不容易发生相对滑动，从而对光缆的生产工艺要求不高，容易生产出合格的光缆，提高光缆生产的合格率。
本发明不局限于上述实施方式，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围之内。本说明书中未作详细描述的内容属于本领域专业技术人员公知的现有技术。

Claims (10)

  1. 一种全干式光缆，其特征在于：所述光缆由内到外依次为光单元(1)、第一层护套(2)、具有多个网孔的编织层(3)和第二层护套(4)，所述编织层(3)为加强原件，所述光缆具有第一区域，在所述第一区域内，所述第一层护套(2)和/或第二层护套(4)靠近所述编织层(3)的表面向编织层(3)的网孔延伸并嵌入所述网孔，且所述第一区域内的至少部分区域为第二区域，在所述第二区域内，所述第二层护套(4)嵌入所述网孔并与所述第一层护套(2)连成一体，或者所述第一层护套(2)和第二层护套(4)均嵌入所述网孔并连成一体。
  2. 如权利要求1所述的全干式光缆，其特征在于：所述编织层(3)由纱线编织而成。
  3. 如权利要求2所述的全干式光缆，其特征在于：所述纱线材质为芳纶纤维、碳纤维、玻璃纤维中的一种或几种。
  4. 如权利要求1所述的全干式光缆，其特征在于：所述第一层护套(2)的厚度小于所述第二层护套(4)的厚度。
  5. 如权利要求1所述的全干式光缆，其特征在于：所述第一层护套(2)和第二层护套(4)材质均为聚乙烯、聚氯乙烯、聚氨酯、低烟无卤塑料LSZH、尼龙中的一种或几种。
  6. 如权利要求5所述的全干式光缆，其特征在于：所述第一层护套(2)和第二层护套(4)材质相同。
  7. 一种基于如权利要求1至6任一项所述的全干式光缆的制造方法，其特征在于：所述光单元(1)上依次完成第一层护套(2)的挤出、编织层(3)的编织、以及第二层护套(4)的挤出操作，且在完成第二层护套(4)的挤出操作前，并未对所述第一层护套(2)和 编织层(3)进行冷却操作，使得所述第二层护套(4)嵌入所述编织层(3)的网孔后与所述第一层护套(2)连成一体，或者所述第一层护套(2)和第二层护套(4)均嵌入所述网孔后连成一体。
  8. 如权利要求7所述的全干式光缆的制造方法，其特征在于，具体包括步骤：
    所述光单元(1)依次经过第一台挤出机、编织机和第二台挤出机，所述第一台挤出机在所述光单元(1)外形成所述第一层护套(2)，所述编织机将纱线编织在所述第一层护套(2)上，所述纱线编织形成所述编织层(3)，所述第二台挤出机在所述编织层(3)外形成所述第二层护套(4)，且所述第二层护套(4)在液体成型过程中嵌入所述编织层(3)的网孔后与所述第一层护套(2)连成一体。
  9. 如权利要求7所述的全干式光缆，其特征在于：所述第一层护套(2)的厚度小于所述第二层护套(4)的厚度。
  10. 如权利要求7所述的全干式光缆，其特征在于：在所述光单元(1)完成第二层护套(4)的挤出操作后，所述光单元(1)还经过一冷却装置，所述冷却装置对所述第一层护套(2)和第二层护套(4)进行冷却。
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