Cable, composite cable, and method for manufacturing a cable

Abstract

The present invention provides a cable, a composite cable, and a method for manufacturing a cable that can be easily manufactured in a short time while suppressing defects caused by shrinkage of the coating layer. [Solution] The cable 1 comprises a bundled core 3 made by twisting together a plurality of wire cores 2, and a jacket layer 4 that covers the bundled core 3 collectively. Each of the plurality of wire cores 2 has a covering layer 23 made of thermoplastic resin as its outermost layer, and the bundled core 3 includes a metal wire 51 and is constructed by twisting together a plurality of wire cores 2 around a shrinkage suppressing member 5 that suppresses the shrinkage of the covering layer 23.

Claims

1. A core made by twisting together multiple wire cores, The collection comprises a jacket layer that covers the aforementioned aggregated cores collectively, Each of the aforementioned multiple wire cores has a coating layer made of thermoplastic resin as its outermost layer. The aggregated core includes metal wires and is constructed by twisting the plurality of wire cores around a shrinkage-suppressing member that suppresses the shrinkage of the coating layer. cable.

2. The aforementioned wire core is an optical fiber wire core, The aforementioned metal wire is made by twisting together steel wires. The cable according to claim 1.

3. The shrinkage-suppressing member further comprises a protective layer made of resin that covers the periphery of the metal wire. The cable according to claim 1.

4. The protective layer is made of a resin composition mainly composed of rubber material. The cable according to claim 3.

5. The protective layer is formed by solid extrusion molding. The cable according to claim 3.

6. The jacket layer is made of a resin composition mainly composed of rubber material. The cable according to claim 1.

7. The jacket layer is formed by solid extrusion molding. The cable according to claim 6.

8. The aggregated core is formed by twisting six of the wire cores around the shrinkage suppressing member. The diameter of the shrinkage suppressing member is larger than the diameter of the wire core. The cable according to claim 1.

9. The twist pitch of the aforementioned wire core is 250 mm or less. The cable according to claim 1.

10. The aforementioned coating layer has a shrinkage rate of 0.5% or more when left standing at 150°C for 1 hour. The cable according to claim 1.

11. A cable core made by twisting together multiple cables, The cable core is surrounded by a sheath, The cable core includes the cable described in any one of claims 1 to 10. Composite cable.

12. A core made by twisting together multiple wire cores, A method for manufacturing a cable comprising a jacket layer that covers the aforementioned aggregated cores collectively, A coating layer made of thermoplastic resin is formed on the outermost layer of each of the aforementioned multiple wire cores. The aggregate core is formed by twisting together a plurality of wire cores around a shrinkage-inhibiting member that includes a metal wire and suppresses the shrinkage of the coating layer, The jacket layer is formed around the aggregate core by extrusion molding. A method for manufacturing cables.

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