Cable and method for the production thereof

Patent metadata

Field	Value
Publication number	US-10436995-B2
Application number	US-201615356897-A
Country	US
Kind code	B2
Filing date	Nov 21, 2016
Priority date	Nov 20, 2015
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A cable, which extends in a longitudinal direction, has a cable core and a cable jacket. The cable jacket is extruded around the cable core. The cable is distinguished by the fact that the cable jacket has a plurality of chambers and, overall, is designed, in particular, in the manner of a hollow profile, and by the fact that a functional material different from the material of the cable jacket is introduced within at least one of the chambers. The functional material is preferably a flame proofing agent, but numerous other materials and, in general, functional elements are also conceivable. We further describe a method for producing the cable.

First claim

The invention claimed is:

1. A cable that extends in a longitudinal direction, the cable comprising:
a cable core;
a cable jacket extruded around said cable core, said cable jacket having a plurality of chambers formed therein; and
a functional material different from a material of said cable jacket disposed within at least one of said chambers;
wherein said functional material is a multi component system having at least two different materials, wherein said different materials are arranged in different chambers of said plurality of chambers and said different materials are materials that react with one another upon contact to form a filling with at least one property differing from a corresponding property of each of said different materials.

2. The cable according to claim 1 , wherein said different materials are configured to produce said filling as an expanding filling upon reacting with one another.

3. The cable according to claim 1 , wherein at least one of said chambers is configured to transport an operating medium.

4. A method for producing a cable, the method comprising:
providing a cable core;
extruding a cable jacket onto the cable core, and forming the jacket with a plurality of chambers; and
completely filling at least some of the plurality chambers with a functional material during or after the extruding step, to thereby form a cable according to claim 1 ;
wherein said functional material is a flame proofing agent; and
wherein said functional material is a multi component system having at least two different materials, wherein said different materials are arranged in different chambers of said plurality of chambers and said different materials are materials that react with one another upon contact to form a filling with at least one property differing from a corresponding property of each of said different materials.

5. The method according to claim 4 , which comprises:
cooling the cable after extruding the cable jacket, and, during the cooling process, filling at least one of the chambers or all of the chambers, with the functional material being a flame proofing agent.

6. The method according to claim 5 , which comprises cross-linking the flame proofing agent after the step of filling the chamber or the chambers.

7. The method according to claim 5 , wherein the cable jacket is manufactured from a material which is processed at a given processing temperature, and wherein the flame proofing agent has a decomposition temperature which is lower than the given processing temperature.

8. The cable according to claim 1 , wherein at least one of said at least two different materials is a flame proofing agent disposed within and completely filling at least one of said different chambers.

9. The cable according to claim 1 , wherein all of said plurality of chambers of said cable jacket are completely filled with said functional material.

10. The cable according to claim 1 , wherein said flame proofing agent is composed of a pulverulent solid and of a process material.

11. The cable according to claim 10 , wherein said process material is cross-linked to render said flame proofing agent a solid flame proofing agent.

12. The cable according to claim 1 , wherein said flame proofing agent has a given decomposition temperature and said cable jacket is formed of a material which has a processing temperature that is higher than the decomposition temperature.

13. The cable according to claim 1 , wherein said flame proofing agent comprises aluminum hydroxide embedded in a process material, and said cable jacket is manufactured from polypropylene.

14. The cable according to claim 1 , wherein said chambers are uniformly distributed in a circumferential direction about said cable core.

15. The cable according to claim 1 , wherein said chambers are formed as ring segments in a cross section transverse to the longitudinal direction of the cable.

16. The cable according to claim 1 , wherein the cable is formed with a first end and a second end and each of said chambers extends continuously from said first end to said second end.

17. The cable according to claim 1 , wherein said functional material is a physically activatable material arranged within said at least one of said chambers.

18. The cable according to claim 1 , wherein said functional material is a shock-absorbing fluid arranged within said at least one of said chambers.

19. The cable according to claim 1 , wherein said functional material is a phase change material arranged within said at least one of said chambers.

20. The cable according to claim 1 , wherein said functional material is a repair material arranged within said at least one of said chambers to form a self-healing cable.

21. The cable according to claim 1 , wherein said different materials react with one another upon contact by chemically reacting with one another upon contact.

22. The method according to claim 4 , wherein said different materials react with one another upon contact by chemically reacting with one another upon contact.

Assignees

• Leoni Kabel Gmbh

Inventors

• Ernst Christian
• Goss Sebastian

Classifications

• G02B6/4486

  Protective covering · CPC title

• H01B7/295 Primary

  using material resistant to flame · CPC title

• G02B6/4483

  Injection or filling devices · CPC title

• H01B13/221

  filling-up interstices · CPC title

• G02B6/4429

  Means specially adapted for strengthening or protecting the cables · CPC title