EP2673415B1 - Method for producing a strand or cable comprising a thermoplastic coating, strand or cable obtained with said method and laying device comprising a coating means - Google Patents

Description

The invention relates to a method for producing a strand or a rope, in which fibers and / or wires are stranded at a stranding point to the strand or the rope.

The invention further relates to a device for carrying out the method and a producible by the method rope.

From the WO 2008/141623 A2 are combined strands and combined ropes are known, which have a core of high-strength plastic fibers and an outer layer of steel wires or steel wire strands. On the cores of plastic fibers, a sheath is arranged, are held by means of the monofilament bundles of the cores in an expanded state.

From the WO 2004/020732 A2 For example, a soul is known, wherein the core comprises a twisted fiber yarn or twisted filaments with a sheathing of a matrix material, as well as a braid embedded in the sheath.

The WO 2004/029343 A1 describes an elevator belt assembly comprising a plurality of stretched plastic ropes and comprising a urethane sheath overlying the plastic ropes which holds the plastic ropes in the stretched condition.

From the EP 1 103 653 A1 is a method for producing a rope or a strand which consist of a combination of carrying plastic fibers and a plastic plastic fibers at least partially surrounding thermoplastic. The individual elements of the rope or the strand are heated before or during the stranding at least to near the state of plastication and subsequently cooled to a solidification temperature of the plastic until it leaves a stranding device. The stranding device has a Heating device which acts on the individual elements and a cooling device which is arranged in the processing direction after the heating device.

A method for producing a prestressed concrete strand which is coated for protection against rusting is disclosed in US Pat WO 2008/093651 A1 described. At least one core wire in each single strand forming a twisted steel wire is preheated immediately before a rotational position, and a rust preventive material formed of a molten thermoplastic resin is supplied at a stranding point to close the spaces between the single strands of the steel twisted wire to fill. After stranding, the prestressed concrete strand is heated and the peripheral portion of the steel is covered with the antirust material.

Furthermore, by use of methods of making natural fiber, plastic fiber and wire strands or ropes, which are performed with a stranding machine. On a rotor of the stranding machine coils are arranged, are wound on the fiber strands or the wires to be stranded. As the rotor rotates, the fiber strands or wires are routed to the stranding point where they are twisted into the strand or rope and the formed strand or rope is rolled up onto a cable drum.

In particular, by means of such methods, strands and ropes are also made, the high-strength plastic fibers from e.g. Aramid have. Such strands and ropes have a high strength in relation to their weight and their volume.

For this reason, the plastic fiber ropes are used in climbing sports for securing mountaineers. The advantage also has an effect on the use of the plastic fibers in long-length wire ropes for hanging use, e.g. for ropes in mining or deep-sea ropes, positive. In such an application, the weight of the wire ropes itself already claimed a large part of their carrying capacity; the payload is limited accordingly.

The problem with plastic fibers is that they have a very high degree of rigidity in their longitudinal direction, but only a very small one across them and therefore a considerable risk of breakage under appropriate load.

The plastic fiber ropes used to secure mountaineers typically have a core-shell structure in which the core is made of one another stranded fiber strands exists. The stranded fiber strands are protected from damage by a sheath that is braided around them and holds them together.

By means of the method mentioned above, combined ropes are also produced in which a core rope consists of the high-strength synthetic fibers and outer strands of steel wire. For example, in the case of the US 6,563,054 B1 Known rope applied to a core of parallel plastic fibers, a coat of thermoplastic material, on which the steel wire strands are stranded.

The invention has for its object to provide a method of the type mentioned, with which can be produced strands or ropes, which have over the known strands or ropes improved mechanical properties.

According to the invention the object is achieved with respect to the stranded wire by the method according to claim 1 and with respect to the rope by the method according to claim 2.

By means of the method, a strand or a rope can be produced in which the fibers or, if the fibers exist as monofilament bundles, the monofilament bundles or the wires in the strand or in the rope are surrounded by the matrix material and spaces between the wound to the strand or rope wound fibers, monofilament bundles or wires are filled with the matrix material. The strands or ropes have particularly advantageous properties if the fibers, the monofilament bundles or the wires are completely surrounded by the matrix material at least in those sections of the strand or rope in which they are not located on the strand or rope surface. It is thus possible to produce a particularly homogeneous strand or a particularly homogeneous rope. In addition, the strand or the rope can be coated simultaneously with the matrix material.

The matrix material protects the fibers or the wires, connects them together and transfers forces to them. A composite rope with improved mechanical properties is created.
In addition, the choice of matrix material can advantageously influence the mechanical properties of the strand or of the rope. Thus, the strength is greater in choosing a high strength matrix material than in choosing a low strength matrix material.
Furthermore, it becomes possible to embed the fibers or the wires already during the stranding in the positions intended for them in the strand or the rope. Further treatment of the rope to bring the fibers or the wires into the intended positions is not necessary.

If the strand is stranded from the, preferably twisted, monofilament bundles of individual fibers, each of the monofilament bundles is covered with the matrix material and embedded in the matrix material during stranding, wherein each monofilament bundle remains surrounded by the matrix material. Dependent u.a. from the viscosity of the matrix material and from the wetting properties of the matrix material on the fiber material, individual monofilaments of the monofilament bundles lying outside the monofilament bundle may also be surrounded by the matrix material at least in the monofilament bundle.

Advantageously, the monofilament bundles and possibly the individual fibers are separated from one another by the matrix material, so that a mutual load in the direction perpendicular to their longitudinal direction is reduced. The risk of breakage is considerably reduced. The strands or ropes are more resistant and have a longer life compared to the known strands or ropes.

While it would be conceivable to use natural fibers, mineral fibers, glass fibers and / or carbon fibers to make the strand or rope, synthetic fibers such as aramid or polyethylene fibers are used in the preferred embodiment of the invention.
Conveniently, a thermoplastic is used as the matrix material. In addition to the preferred polypropylene used are polycarbonate, polyamide, polyethylene or PEEK in question.

In the rope according to the invention, the fibers embedded in the matrix material may form a core of a combined strand having an outer layer of steel wire.

Further, the embedded fibers may be a core rope of the rope and the rope may have an outer layer of strands, preferably of steel wire strands or of said combined strand with the core of the fibers and the outer layer of the steel wire.

Conveniently, the strand or rope is completely embedded in the matrix material. The matrix material then forms a sheath and thus a protection to the outside. Further, in the case of producing a strand or a core rope for embedding, it may serve as the strand or the core rope of surrounding strands.

It is understood that with the method according to the invention the rope can also be produced from wires and / or fibers already stranded into strands. In this case, the strands to be stranded are embedded in the matrix material, wherein the matrix material can fill in any cavities present in the strands. To make the rope, strands made by the method described can be used. Ropes with a core-shell structure can be produced more easily by means of the method. While it was previously necessary to embedding the core rope to carry out the process in two process steps, namely first the sheathing of the core rope and the subsequent stranding of the strands on it, this can be carried out by means of the method according to the invention in a single process step.

Conveniently, a means for occupying the fibers or wires to a stranding device is provided, with which both the core rope can be produced as well as the strands can wind on the core rope (tandem stranding machine). The core rope is covered with at least the stranding of the strands with the matrix material. Optionally, the fibers, wires and / or strands used to make the core rope are already embedded in the matrix material.

While it would be conceivable to spray the fibers, the wires and / or the strands with the matrix material, in a particularly preferred embodiment of the invention they are immersed in the liquefied matrix material before and / or at the stranding point. In the device according to the invention, a, preferably heatable, container for receiving the liquefied matrix material is provided, which encloses the fibers and / or monofilament bundles before and at the stranding point.

Alternatively, which does not fall within the claimed range of the invention with respect to the device, a spraying device for spraying the liquefied matrix material may be provided. Conveniently, the device for carrying out the method, at least in the area in which the matrix material is sprayed, is provided with a protective wall which closes the device to the outside in order to prevent sprayed matrix material from entering the environment. A space formed by the protective wall can be provided with a trigger and a corresponding filter.

Conveniently, the container or the spraying device is connected to an extruder, by means of which the matrix material is liquefied and moved to the spraying device or to the container.

Appropriately, a device for measuring the temperature of the container is provided to ensure that the container is heated so that the matrix material remains liquid in the container. The temperature can also change the viscosity of the matrix material and influence the wetting on the fibers or wires. According to the invention, the container has a rotatable side wall provided with openings through which the fibers and / or monofilament bundles are guided to the stranding point. The rotatable side wall is rotatable at the same rotational speed as a rotor, over which the fibers and / or monofilament bundles are guided to the stranding point. Conveniently, the openings are provided with seals which prevent the matrix material from coming out of the container.

On the opposite side of the rotatable wall of the container, a further opening is provided, through which the formed strand or the rope formed is to be guided.

While it would be conceivable to electromechanically synchronize the rotation of the side wall with the rotation of the rotor, in a preferred embodiment of the invention, the rotatable side wall and the rotor are interconnected. The rotor guides the sidewall during rotation.

Conveniently, the container is closed except for the said openings. Optionally, the matrix material may be in the container under elevated pressure, so that it can better wet the fibers or better penetrate into any existing cavities.

Conveniently, after stranding, particularly after it emerges from the container through said opening, the strand or rope is used to solidify the matrix material, preferably in air or in a cooling liquid, e.g. Water, cooled. According to the invention, a calibration ring is arranged in the container, through the opening of which the strand to be formed or the rope to be formed is pulled during stranding. The fibers and / or monofilament bundles of the strand or rope can already be brought into the intended form within the container.

This proves to be particularly advantageous because the further opening of the container has a larger diameter than the opening of the Kalibrierrings. It can then apply a sheathing of the matrix material already at the stranding on the strand or the rope. This is possible in particular if the matrix material has such a toughness at the said further opening that it retains its shape after it leaves the opening.

To make this possible, the container is expediently provided at the end, on which the formed strand or the cable formed is drawn out, with a pipe section having a larger inner diameter than the opening of the Kolibrierrings and in which the matrix material cools and solidifies. The pipe section may be provided with a cooling device, e.g. a water cooling, be provided.

In a further embodiment of the invention, the fibers will be stretched during stranding, embedding in the matrix material and cooling of the matrix material until solidified, such that the fibers are held by the matrix material in a position which they occupy in the stretched state. Conveniently, the fibers will be stretched so far that they are brought into a position that they take on load absorption, preferably such that so far that they are stretched plastically when loaded by the strand or the rope directly in accordance with Hooke's Law.

The load bearing can be improved by this measure. The actual load absorption of non-pre-stretched strands or ropes of fibers begins only with a delay, because the fibers first "set" each load, i. E. have to find a final spatial allocation to form a stable cross-section. This applies in particular also to monofilament bundles of existing plastic fibers. If the fibers are already stretched during the stranding and held in the elongation until the matrix material has solidified, they are held in the stretched state by the matrix material. The fibers are frozen in the stretched state. Advantageously, the elongation behavior of the core rope can be adapted to the expansion behavior of the wire strands in a cable construction of a core of fibers and strands of steel and thus take over the core rope a significant proportion of a load.

In one embodiment of the invention, it is provided to apply an additional casing after stranding on the strand or the rope. When the sheath, which is preferably formed by a braid, is applied under tension, it may serve to hold or at least assist the fibers in the pretensioned state described above.

If the sheathing is also embedded in the matrix material, a particularly good bond between the fibers and the sheathing can be achieved. The problem with known ropes that a sheathed core strand or a sheathed core rope dissolves in a rope or in a strand of the rest, is resolved.

A particularly strong bond can be achieved if the braiding is formed of fibers of different thicknesses and / or if it is formed with stitches, the matrix material penetrates the meshes.

Fig. 1

schematisch eine erfindungsgemäße Vorrichtung,

Fig. 2

ein Detail der Vorrichtung in isometrischer Darstellung, die nicht innerhalb des beanspruchten Bereichs fällt, aber geeignet ist die beanspruchte Vorrichtung zu verstehen,

Fig. 3

ein Detail einer weiteren Vorrichtung in isometrischer Darstellung, die nicht innerhalb des beanspruchten Bereichs fällt, aber geeignet ist die beanspruchte Vorrichtung zu verstehen,

Fig. 4

schematisch eine weitere erfindungsgemäße Vorrichtung,

Fig. 5

ein Detail der erfindungsgemäßen Vorrichtungnach Fig. 4 in isometrischer Darstellung,

Fig. 6

ein Seil im Querschnitt,

Fig. 7

ein weiteres erfindungsgemäßes Seil im Querschnitt,

Fig. 8

eine erfindungsgemäße Litze im Querschnitt,

Fig. 9

ein weiteres erfindungsgemäßes Seil im Querschnitt,

Fig. 10

ein weiteres erfindungsgemäßes Seil im Querschnitt,

Fig. 11

ein weiteres erfindungsgemäßes Seil im Querschnitt,

Fig. 12

ein weiteres erfindungsgemäßes Seil im Querschnitt, und

Fig. 13

ein weiteres erfindungsgemäßes Seil im Querschnitt.

In the following the invention will be explained in more detail by means of exemplary embodiments and the accompanying drawings relating to the exemplary embodiments. Show it:

Fig. 1

schematically a device according to the invention,

Fig. 2

a detail of the device in an isometric representation, which does not fall within the claimed range, but is suitable to understand the claimed device,

Fig. 3

a detail of another device in isometric representation, which does not fall within the claimed range, but is suitable to understand the claimed device,

Fig. 4

schematically another device according to the invention,

Fig. 5

a detail of the device according to the invention Fig. 4 in isometric view,

Fig. 6

a rope in cross section,

Fig. 7

another rope according to the invention in cross-section,

Fig. 8

a strand according to the invention in cross section,

Fig. 9

another rope according to the invention in cross-section,

Fig. 10

another rope according to the invention in cross-section,

Fig. 11

another rope according to the invention in cross-section,

Fig. 12

another inventive rope in cross section, and

Fig. 13

another inventive rope in cross section.

An in Fig. 1 illustrated apparatus for producing ropes or strands has a rotor 9, are guided over the twisted monofilament bundle 2 of aramid fibers to a stranding point 3. On the rotor 9 not shown here coils are arranged in a conventional manner, on which the monofilament bundles 2 are wound. During the stranding, the monofilament bundles 2 are continuously unwound from the bobbins while the rotor 9 rotates in the direction of the arrow P. At the stranding point 3, the monofilament bundles 2 are stranded in a manner known per se to form a rope 20. By means of rollers 15, the rope 20 is pulled away from the stranding point 3 and rolled up on a cable drum.

At Verseilpunkt 3 encloses a closer in Fig. 2 The container 7 has a conical shape and is provided on its side facing the rotor 9 with a rotatable side wall 10 which is provided with a plurality of openings 11 and via a connecting web 16 with the Rotor 9 is rigidly connected. Through the openings 11, the twisted monofilament bundles 2 are guided from the rotor 9 to the stranding point 3. In Fig. 2 By way of example only four monofilament bundles 2 are shown. Depending on the application, different numbers of openings 11 can be provided for the respective number of monofilament bundles 2 to be stranded.

With the device can be stranded stranded into a rope instead of the twisted Monofilbündel 2 already stranded. Furthermore, the Monofilbündel 2 can be stranded with already stranded strands.

On the opposite side of the side wall 10 of the container 7, a further opening 12 is provided, through which the cable 20 is led out of the container 7. The opening 12 has a diameter corresponding to the diameter of the to be formed Rope 20 corresponds. In addition to a circular shape of the opening 12, another shape is also conceivable, preferably an asymmetric, angled, oval or polygonal, eg triangular, quadrangular or pentagonal shape, or the shape of a circular section, eg a semicircle or a three-quarter circle.

The container 7 is connected via a heated tube 13 with an extruder 8, by means of which continuously liquefied polypropylene and the container 7 is supplied. Thus, the polypropylene 4 remains liquid in the container 7, the container 7 is provided on its lateral surface with heating tapes, not shown here, with which it can be heated to 200 to 300 ° C. To control the temperature, a temperature sensor is provided in the container.

To produce the rope 20 according to the invention, the monofilament bundles 2 are pulled continuously to the stranding point 3. The side wall 10 is rotated at a rotation of the rotor 9 through the connecting web 16 at the same rotational speed, so that the Monofilbündel 2 are continuously fed through the openings 11 to the stranding point 3. The seals, which are not shown here and are provided at the openings 11, prevent polypropylene 4, which is supplied via the connecting pipe 13 from emerging from the container 7.
In the container 7, the Monofilbündel 2 are already occupied before the stranding 3 with the polypropylene 4. The stranding at the stranding point 3 takes place completely in the polypropylene 4. During the stranding, the polypropylene 4 is continuously fed to the container by means of the extruder 8.

The formed rope is passed through the opening 12 from the container 7 in a water bath 14, in which the polypropylene 4 is cooled and solidifies.
In this case, the rope can be prestressed with a tensioning device, not shown here, for stretching it, for example, such that the monofilament bundles 2 occupy a position in the rope which they occupy under the load intended for use of the rope. The monofilament bundles 2 are held by the polypropylene 4 in the stretched state occupied positions. They are frozen in the stretched state.

Fig. 6 shows a manufactured by the method described rope 20 made of aramid fibers. Several fiber strands 21, 22 wound from several twisted monofilament bundles were stranded into the cable 20. The monofilament bundles shown as black dots are surrounded by the polypropylene 4.

Below on the Fig. 3 to 5 and 7 to 12 Reference is made to where identical or equivalent parts with the same reference number as in Fig. 1, 2 and 6 and the relevant reference number is accompanied by a letter.

An in Fig. 3 The device shown differs from that according to the Fig. 1 and 2 in that a connecting web 16a, which is connected to a rotor, is hollow inside and through the connecting web 16a, a core cable 23 is guided to the stranding point 3a. At the stranding point 3a, the core cable 23 is stranded with outer strands 24 to form a cable 20a and thereby covered with polypropylene 4a as described above.
The device further comprises a braiding device 35, shown only schematically here, with which a braid 27 can be applied to the core cable 23 while being embedded in the polypropylene 4a. By braiding a braided rope 20a 'is formed from the rope 20a.

A device according to the invention, which in the Fig. 4 and Fig. 5 7, in its box 7b has a sizing ring 30 formed by a ring fixed in the box 7b, through which a core rope 22b to be formed after fibers 2b are wound to the core rope 22b is drawn to give it its shape , On one side of the container 7b, on which the core cable 22b emerges from the container 7b, a pipe section 31 is arranged. The pipe section 31, in the wall of which a water cooling is provided, has a larger inner diameter than the opening of the calibrating ring 30. In the pipe section 31, polypropylene 4b, with which the fibers 2b are coated, is cooled such that it has such a toughness it retains its shape at the exit from the pipe section 31, but still remains soft.
With the device after Fig. 5 For example, the core rope 22b may be provided with a sheath 26 of polypropylene 4b on the fibers.
In Fig. 7 For example, a combined rope 20a is shown having a core rope 22a corresponding to the rope 20 described above. The core rope 22a is surrounded by a jacket 26 made of the matrix material forming polypropylene 4a. Embedded in the shell 26, steel strands 24 have been wound around the core rope 22a. The steel strands have been pressed into the still soft matrix material 4a of the shell 26.

Fig. 4 shows schematically extensions of in Fig. 5 shown part of the device. Viewed in the stranding direction behind the pipe section 31, either a braiding device 26b is provided with which a braiding can be applied to the core cable 22b.

Further, alternatively or further, a further stranding device 36 is provided, with which outer strands 24b can be stranded by embedding the strands 24b in the matrix material 4b on the core rope 22b.

In Fig. 8a is a strand 1 shown, the core strand 22b was prepared by the method according to the invention and consists of embedded in polypropylene aramid fiber strands. Here, only shown schematically steel wire 24b were pressed while heating the core rope 22b during stranding directly into the core rope 22b. Fig. 8b shows a strand 1 ', which is constructed as the one after Fig. 8a but, for example, by hammering, has been compacted.

An in Fig. 9 shown combined rope 20c has a core of three twisted and embedded in polypropylene fiber strands 21 c of monofilament bundles of aramid fibers, in the stranding during stranding 1 c have been pressed. The outer strands 1, of which only a single one is shown in detail, have aramid fibers 23 embedded as core in polypropylene. In the polypropylene 4c, steel wire strands 24c are arranged around the aramid fibers 23.

Fig. 10 shows a combined rope 20d having a core rope embedded in polypropylene 4d. The core rope comprises a core 21 d made of polypropylene embedded monofilament bundle 21 d of aramid fibers embedded therein steel wire strands 24d and wound around therefore another layer of steel wire strands 25. On the polypropylene 4d sit outside strands 1 d, which have the same structure as above for the Strands 24c of the embodiment according to Fig. 9 described.

An in Fig. 11 Shown inventive combined rope 20e differs from the ropes of the previous embodiments in that also outer strands 1 e are completely embedded in a matrix material made of polypropylene 4e. A core rope of the rope 20e has a core strand 32 on steel wire and wound around strands 24e, 25e, which have a core, not shown here, embedded in polypropylene aramid fibers. The core strand 32 and the strands 24e, 25e are surrounded by a lubricant 33. Around the lubricant 33 and the core rope around the outer strands 1 e are stranded with the core rope by the method described above while the core rope with the lubricant 33 together with the outer strands 1 e completely embedded in the polypropylene 4e.

A cross section in Fig. 12 Shown rope can be produced when a braid 27 is placed on fibers 22f of a core rope with the above-mentioned braiding device 31 in the sheath 26 inside. In this case, the braiding 27 embedded in the fibers 22f matrix material 4f and a good bond between the fibers on the one hand and the braid 27 on the other hand is achieved. Around the braid 27, a sheath 26 of the matrix material 4f is formed.
As Fig. 13 shows, 26 outer strands 24 g can be embedded in this jacket.

It is understood that the examples described can be carried out instead of the polypropylene mentioned also with other matrix materials, for example polycarbonate, polyamide, polyethylene or PEEK.

Furthermore, it is understood that the individual process steps described can be combined with one another depending on the cable structure to be produced. Accordingly, in the manufacturing apparatus, depending on the method to be used, individual components such as e.g. the container, the device for stranding the outer strands and the braiding device, even several times, are combined.

Claims (15)

1. Method for producing a strand (1), in which method, for forming a core strand, fibres (2) and/or monofilament bundles of the fibres (2) are furnished ahead of and/or at a stranding point (3) with a liquefied matrix material (4) which solidifies upon stranding, are stranded at the stranding point (3), and when being stranded are embedded in the matrix material (4), wherein a sheathing (27) of the matrix material (4) is applied to the core strand, and upon stranding of the core strand (23c)

   a) an external tier of steel wire (24c) is stranded on the sheathed core strand, wherein the steel wire is embedded in the matrix material (4); or

   b) an additional sheathing (27) is applied to the sheathed core strand, and the additional sheathing is embedded in the matrix material (4) .
2. Method for producing a cable (20), in which method, for forming a core cable (22a; 22b; 21c; 21d; 21f; 21g), fibres (2) and/or monofilament bundles of the fibres (2) are furnished ahead of or at a stranding point (3) with a liquefied matrix material (4) which solidifies upon stranding, are stranded at the stranding point (3), and when being stranded are embedded in the matrix material (4), wherein a sheathing (26, 27) of the matrix material (4) is applied to the core cable (22a; 22b; 21c; 21d; 21f; 21g), and upon stranding

   a) a tier of strands (1c; 1d; 24g) is applied to the sheathed core cable (22a; 22b; 21c; 21d; 21f; 21g), and the strands are embedded in the matrix material (4), and/or

   b) an additional sheathing (27) is applied to the sheathed core cable (22a; 22b; 21c; 21d; 21f; 21g), and the additional sheathing (27) is embedded in the matrix material (4).
3. Method according to Claim 2,
   characterized in that
   strands (1) that are produced by means of the method according to Claim 1 are used for producing the cable (20).
4. Method according to one of Claims 1 to 3, characterized in that
   the matrix material (4) is a thermoplastic, and the strand (1) or the cable (20) upon stranding, for solidifying the matrix material (4), is cooled preferably by air or in a cooling liquid, for example water.
5. Method according to Claim 4,
   characterized in that
   the fibres (2) during the stranding thereof and the embedding thereof in the matrix material (4) and the cooling of the matrix material (4) up to the solidification thereof are elongated such that the fibres (2) are held by the matrix material (4) in a position which said fibres assume in the elongated state.
6. Method according to Claim 5,
   characterized in that
   the fibres (2) are elongated in such a manner that said fibres are brought to a position which said fibres assume when absorbing a load.
7. Method according to one of Claims 1 to 6, characterized in that
   the sheathing is formed by a braid (27).
8. Strand comprising a core strand which comprises fibres (2) and/or, in particular twisted, monofilament bundles (21, 22) of the fibres, wherein the fibres (2) and/or the monofilament bundles (21, 22) are furnished with a matrix material (4) and are embedded in the matrix material (4),
   characterized in that
   the matrix material (4) forms a sheathing of the stranded fibres and/or of the stranded monofilament bundles (21, 22) and an external tier of steel wires is stranded on the sheathing, said steel wires being embedded in the sheathing.
9. Cable comprising a core cable which has fibres (2) and/or, in particular twisted, monofilament bundles (21, 22) of the fibres, wherein the fibres and/or the monofilament bundles (21, 22) are furnished with a matrix material (4) and are embedded in the matrix material (4),
   characterized in that
   the matrix material (4) forms a sheathing of the stranded fibres (2) and/or of the stranded monofilament bundles (21, 22), and a tier of strands is stranded on the sheathing, said strands being embedded in the sheathing.
10. Cable according to Claim 9,
    characterized in that
    an additional sheathing (27) is applied to the sheathing, the former being embedded in said sheathing.
11. Strand according to Claim 8, or cable according to Claim 9 or 10,
    characterized in that
    the fibres (2) in the core strand (23b) and/or in the core cable (20a) are elongated to such an extent that said fibres (2) are in a position which the latter assume when absorbing a load.
12. Cable according to Claim 10, or Claims 10 and 11, characterized in that
    the additional sheathing (27) is a sheathing (27) that encloses the core cable (20a) and consolidates the latter under tension.
13. Strand according to Claim 8 or 11, or cable according to Claim 9, 10, 11, or 12,
    characterized in that
    the fibres (2) are composed of a high-tensile plastics material, preferably of aramid, and/or the matrix material (4) comprises a thermoplastic, preferably a polypropylene.
14. Device for producing a strand (1) or a cable (20), said device having an installation (5) for feeding fibres (2) and/or, in particular twisted, monofilament bundles (21, 22) of the fibres (2) to a stranding point (3) and for stranding the fibres (2) and/or the monofilament bundles (21, 22) at the stranding point (3), and an installation (6) for furnishing the fibres (2) and/or the monofilament bundles (21, 22) ahead of and/or at the stranding point (3) with a liquefied matrix material (4) that is provided for embedding the fibres (2) and/or the monofilament bundles (21, 22), said installation (6) comprising a vessel (7) for receiving the liquefied matrix material (4), wherein the feeding and stranding installation (5) comprises a rotor (9) by way of which the fibres (2) and/or the monofilament bundles are guided to the stranding point (3), the vessel (7) having a rotatable side wall (10) which is provided with openings (11) through which the fibres (2) and/or the monofilament bundles (21, 22) are to be guided, and which is rotatable at the same rotational speed as the rotor (9) that feeds the fibres (2) and/or the monofilament bundles (21, 22), and in that a further opening (12) through which the strand (1) formed and/or the cable (20) formed is to be guided is provided on a side of the vessel (7) that is opposite the rotatable side wall (10),
    characterized in that
    an annular calibrator (30) through the openings of which the fibres (2) and/or the monofilament bundles (21, 22) when being stranded are drawn is disposed in the vessel (7d), the further opening (12d) having a diameter that is larger than the opening of the annular calibrator (30), so as to provide a sheathing from the matrix material (4) on the stranded fibres and/or the stranded monofilament bundles, and in that the device

    a) has a further stranding installation (36) by means of which external strands (24b) on the sheathing can be stranded and embedded in the sheathing, and/or

    b) a braiding installation (35) by means of which an additional sheathing (27) can be applied to the sheathing and embedded in the matrix material.
15. Device according to Claim 14,
    characterized in that
    the vessel (7d) at that end at which the strand (1) formed or the cable (20) formed is drawn off is provided with a tubular portion (31) which has an internal diameter that is larger than the opening of the annular calibrator (30), said tubular portion (31) preferably being provided with an installation for cooling the matrix material (4).

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