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A kind of skeleton type optical cable and its preparation method

Active Publication Date: 2021-11-23
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a frame-type optical cable and its preparation method. Improve bending performance and flexibility, thereby solving the technical problems of poor bending performance and flexibility of existing skeleton optical cables

Method used

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  • A kind of skeleton type optical cable and its preparation method
  • A kind of skeleton type optical cable and its preparation method
  • A kind of skeleton type optical cable and its preparation method

Examples

Experimental program
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preparation example Construction

[0041] The preparation method of skeleton type optical cable provided by the invention comprises the following steps:

[0042] Extrusion or coating on the outside of the reinforcement to form the central skeleton;

[0043] Synchronously extruding and prefabricating the surrounding skeleton with the optical fiber, the preferred solution uses a mold to form a longitudinally arranged hollow skeleton groove in the surrounding skeleton and the optical fiber passes through the mould, so that the optical fiber is in the skeleton groove during extrusion and preforming, and a closed prepackage is obtained The surrounding skeleton of the optical fiber is buried; in a preferred solution, solid water-blocking materials such as water-blocking powder are filled in the hollow skeleton groove.

[0044] Wrap the surrounding frame continuously on the central frame in a wrapping manner according to a preset pitch, and extrude a sheath layer around the frame, such as figure 1 As shown, the pitch...

Embodiment 1

[0048] The skeleton optical cable provided by this embodiment has a structure such as figure 2 As shown, it includes a central frame, a surrounding frame, a central reinforcement, and a sheath layer; the surrounding frame is pre-embedded with optical fibers in a closed manner, and is continuously wrapped on the central frame in a wrapping manner according to a preset pitch; The pitch value of the surrounding skeleton layer wrapping is: 500±100mm;

[0049] The central frame is a circular support frame with an elastic modulus of 1200±50Mpa, which is bonded with high-density polyethylene by polypropylene resin; its outer diameter is 6±3mm, and has a central reinforcement, which is a single Steel wire, steel wire diameter 2.0±0.2mm;

[0050] The surrounding skeleton is a flexible cushioning skeleton, the storage modulus (G') value of the elastomer at room temperature (23°) is 220±10Mpa, and the loss modulus (G'') value is 310±10Mpa; polyester Polyurethane, polyether ether ester...

Embodiment 2

[0060] The skeleton optical cable provided by this embodiment has a structure such as Figure 5 As shown, it includes a central frame, a surrounding frame, a central reinforcement, and a sheath layer; the surrounding frame is pre-embedded with optical fibers in a closed manner, and is continuously wrapped on the central frame in a wrapping manner according to a preset pitch; The pitch value of the surrounding skeleton layer wrapping is: 500±100mm;

[0061] The central frame is a circular support frame with an elastic modulus of 1200±50Mpa, which is bonded with high-density polyethylene by polypropylene resin; its outer diameter is 6±3mm, and has a central reinforcement, which is a single Steel wire, steel wire diameter 2.0±0.2mm;

[0062] The surrounding skeleton is a flexible cushioning skeleton, the storage modulus (G') value of the elastomer at room temperature (23°) is 220±10Mpa, and the loss modulus (G'') value is 310±10Mpa; polyester Polyurethane, polyether ether ester...

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Abstract

The invention discloses a skeleton type optical cable and a preparation method thereof. The skeleton-type optical cable includes a central skeleton and a surrounding skeleton; the surrounding skeleton is pre-embedded with optical fibers in a closed manner, and is continuously wrapped on the central skeleton in a wrapping manner according to a preset pitch; the surrounding skeleton layer is wound The pitch value of the package is: 100~1000mm. The preparation method is characterized in that it includes the following steps: extruding or coating to form a central framework; extruding and prefabricating the surrounding framework synchronously with the optical fiber; wrapping the surrounding framework continuously on the center according to a preset pitch A sheath layer is extruded on the skeleton and around the skeleton. In the skeleton type optical cable provided by the present invention, the skeleton layer is set as a central skeleton with good supporting force and a flexible surrounding skeleton. The surrounding skeleton adopts a pre-production method and is filled with optical fiber bundles or ribbon fibers, and the flexible surrounding skeleton is wrapped according to a certain pitch. On the inner support frame, the bending performance and flexibility of the optical cable are improved.

Description

technical field [0001] The invention belongs to the field of communication optical fiber cables, and more specifically relates to a skeleton type optical cable and a preparation method thereof. Background technique [0002] At present, the commonly used skeleton optical cable has the advantages of compact structure, small cable diameter, high fiber core density, and fully dry structure. It does not need to remove grease during construction and has high splicing efficiency. It has been widely used in access networks, local offices, etc. Waiting for the communication line in between. The domestic skeleton optical cable mainly adopts a dry water-blocking optical cable structure, that is, the optical fiber is placed in a U-shaped spiral skeleton groove or an SZ spiral skeleton groove in the form of a ribbon or bundle in a matrix, and the water-blocking tape is wrapped around the skeleton. Above, make the skeleton and the water blocking tape form a closed cavity, or wrap the dou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/44
CPCG02B6/443G02B6/4432G02B6/4479G02B6/4486
Inventor 罗俊超沈勇杨向荣祁林刘宏超吴帆
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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