EP1137322B1 - Sheathed carbonfibers - Google Patents

Abstract

The method involves contacting the fiber material (3a,3b) to be connected, simultaneously opening the insulating sleeve coating, compressing the conducting cores, closing the opened sleeve coating and hardening the connection. The sleeve coating is opened using a solvent and closed by applying an insulating material. Independent claims are also included for the following: a method of manufacturing a heat conducting material from a continuous fiber product and the use of a material to make clothing, accessories, therapeutic materials, healing aids and first aid materials.

Description

The invention relates to a method for producing a conductive connection between Thread material made of a conductive core, preferably a carbon fiber core, and an insulating Sheath layer, as well as the production of a thermally conductive fabric from one endless thread product with a conductive core and an insulating jacket layer, preferably a continuous material produced in warp and weft arrangement and the use of this fabric.

With the conventional connection of conductors, be it in the form of wires or lies, there are generally far too large accumulations of connecting material, mostly silver solder, which are associated with the further processing of such connections, especially in sensitive Areas, prove to be quite annoying. Especially more thermally conductive during manufacture Tissue is a fine and leak-free connection between conductive material and the arrangement the mergers - from which the heat emission results - crucial.

The object of the invention is therefore a method for producing a conductive connection between thread material from a conductive core, preferably a carbon fiber core, and to create an insulating cladding layer, which in particular for further processing in a fabric created from the thread material is suitable and the known disadvantages avoids conventional connections.

1.Kontaktieren des zu verbindenden Fadenmaterials

2.Gleichzeitiges Öffnen der isolierenden Mantelschicht

3. Verpressen der leitenden Kerne

4. Verschließen der geöffneten Mantelschicht

5. Aushärten der Verbindung

The invention solves the problem in that the line closure of overlapping threads comprises the following steps:

1.Contact the thread material to be connected

2. Simultaneous opening of the insulating jacket layer

3. Press the conductive cores

4. Seal the open jacket layer

5. Harden the connection

The process guarantees a clean and smooth through this sequence of process steps Connection that is ideally suited for the use of line closures in fabrics. In addition, it also favors the mechanical production of such connections.

According to a further feature of the invention, the insulating jacket layers are opened with a solvent.

At possible contact points - in the case of fabrics, there are all places where the threads are cross over, optional places - the solvent is applied selectively, whereby the Loosen crossed layers of cladding and pressing the cores, making them conductive Unity makes possible.

According to another embodiment of the invention, the cladding layers are opened as well the pressing of the conductive cores by simultaneous application of pressure and heat in the Contact area of the thread material to be connected. The cladding layers opened by the action of heat and high pressure and thus a conductive contact made between the conductive cores.

After the conductive cores have been connected, insulation-free areas remain, in which leakage currents could flow. To avoid this impact, follow a further development of the invention by closing the open cladding layers Apply an insulating material.

An insulating layer is preferably sprayed on. This creates a smooth finish and a similar surface.

Especially when processing thread material into fabric and subsequent production of connections are maintaining flexibility at the connection point as well as a low-volume closure of particular importance.

Through the use of suitable insulating material, which the conductive core of the Covering thread material, the application of additional insulating layer can also be avoided become.

The material opened under heat and pressure closes after the heat supply has ended completely by itself.

The invention also relates to the production of a thermally conductive fabric from an endless Thread product with a conductive core and an insulating jacket layer.

Especially when using heatable materials such as electric blankets, shoes, etc. problems caused by breaks or short circuits.

The object of the invention is to create tissue which avoids these disadvantages and allows a controlled heat distribution.

The invention solves the problem in that the outline of the fabric by a self-contained Line shorting is defined by making further line shortings line clusters arise within the chosen outline, and that the tissue outside the defined short circuit is separated from the continuous material.

The piece of fabric which can be freely selected in terms of its shape is thus removed from the material web for the time being Establishing a closed line connection that corresponds to the circumference of the piece of tissue separated from the dressing and then mechanically applied. The mechanical Disconnection takes place outside of this in order not to violate the line short.

To simplify this process, the invention provides in a further development that the The lines are marked using a grid. Ideally, the grid corresponds an optically generated computer grid.

The line connection can be easily established along this path thus drawn.

In order to heat the tissue, i.e. to allow current to flow between connection points, the invention provides
that the tissue separated from the continuous material is connected to a controllable power source via further line closures and that in addition to already specified line areas, cross-connections for the arbitrary arrangement of conductive areas with individually selectable expansion take place by selective supply of pressure and heat.

Within the product, simply by applying heat and pressure, other, The use of the respective fabric realizes specific line crosses become. This subsequent individual adjustment is particularly in the area of medical aids an excessive advantage.

With the increase of the crossing points, the warming also increases in this area of the material. You can use any heat pattern that is completely tailored to the application are generated. It is particularly advantageous that in addition to the already intended intersection points so easily created other intersection points can be.

The invention further provides the use of a fabric made in accordance with the invention by introducing the conductive fabric into material webs for the production of clothing, Accessories, therapeutic materials, healing aids and materials for first aid in front.

All areas of use benefit from the possibility of subsequent adjustment, which is often not only due to the intended use but also due to the peculiarities of the depend on the person determining the assignment. For example, in the field of therapeutic Healing aids, such as elastic bandages for use on joints, a heat cluster be created exactly. The intended purpose is thus fulfilled as best as possible.

The invention is now based on exemplary embodiments with the aid of the connected Drawing described in more detail.

Fig. 1 einen Querschnitt durch ein verwendetes Fadenmaterial;

Fig. 2a - 2d Verfahrensschritte gemäß der Erfindung;

Fig. 3 einen weiteren Verfahrensschritt einer Variante des erfindungsgemäßen Verfahrens;

Fig. 4a ein aus einem Endlosmaterial auszuschneidendes Stück Gewebe;

Fig. 4b Werkzeuge zum Abtrennen eines Gewebes aus dem Endlosmaterial;

Fig. 4c Draufsicht auf ein Raster und eine Schablone;

Fig. 6a Draufsicht auf ein eingearbeitetes Gewebe und

Fig. 6b das eingearbeitete Gewebe in einem Schnitt.

Show it

1 shows a cross section through a thread material used.

2a-2d method steps according to the invention;

3 shows a further method step of a variant of the method according to the invention;

4a shows a piece of tissue to be cut out of an endless material;

4b tools for separating a fabric from the continuous material;

4c top view of a grid and a template;

Fig. 6a top view of an incorporated fabric and

Fig. 6b the incorporated tissue in a cut.

1 shows carbon fibers 1 coated with thermoplastic as continuous filament material 3 in section. The material thickness of the thermoplastic used as the insulating cladding layer 2 is between 2 and 5 µm. With this layer thickness, the continuous thread material is not too stiff to be further processed to be able to. The fiber accumulates during coating, which is simultaneous is advantageous.

To one of a conductive core, preferably a carbon fiber core, and an insulating Sheath layer of existing thread material, which is in the form of yarns, beds, ribbons or wires can be conductively connected with another equivalent thread material, the method steps shown in Fig. 2 are necessary.

First, the thread material 3a, 3b is arranged crossed over. Then takes place in the intersection area 4 the simultaneous opening of the cladding layers 2a, 2b of both threads 3a, 3b.

As indicated in FIG. 2b, this step is carried out by the punctual application of a suitable one Solvent 5. As a result, the sheath layer on both threads is detached and the Fiber cores 1a, 1b can touch each other. By applying a suitably high pressure the two cores are then pressed. Thus, there is a common line flow of the two cores. The cores are pressed, as shown in FIG. 2c, with the help of a plunger 6. The wires to be pressed are at least in their Crossing point on a base 7 that supports the pressing.

Since even opening the cladding layer with pinpoint accuracy cannot take place to such an extent that after pressing, there would not be any areas that would be at risk of leakage current these areas by applying an insulating material, preferably in spray form, locked. 2c shows an embodiment in which the additional insulating material is fed through an opening 8 in the plunger 6.

Fig. 2d zeigt den erfolgreichen Leitungsschluß zwischen den beiden Fäden im Schnitt.

Fig.3 zeigt eine andere Ausführung des Verfahrens.

Depending on the material used, the connection is then hardened [if necessary]

Fig. 2d shows the successful line connection between the two threads on average.

3 shows another embodiment of the method.

There is no need to open the insulating cladding layer with a solvent the casing is opened and the cores are pressed in one step.

Thereby, in the crossing area of the yarns, beds, ribbons or wires, heat and high Press pressure used in one step.

Due to the heat and high pressure, the insulating material is pressed open in the crossing area and thus there can still be a conductive contact between the units to be connected be made easier.

Then, in this variant as well, additional insulating material is applied, which then hardens.

A variant of the variant described above results when using a special property comprising material for the insulating cladding layer.

This material flows apart when pressure and heat are applied and gives the crossing area so free.

After the cores have been pressed in and the heat supply has ended, this connects Insulation material of the two fibers in the marginal zones. The contact is thus established and the Contact node already isolated again.

The line nodes produced in this way are used in particular in the manufacture a thermally conductive fabric. This is made from filaments and preferably too a mat or an endless material.

This fabric should now be embedded in material webs, preferably made of natural or synthetic fibers for the production of clothing, therapeutic bandages or corsages etc, as well First aid materials find their use.

The purpose of the application is to heat the tissue in all cases.

This is done by connecting the tissue to an external and controllable power source and a conductor with a certain resistance value when applying Electricity is heated. This heating takes place depending on the distance which the Current flows through nodes.

The material 9 to be processed is removed from the mat 10 in accordance with its shape (Fig. 4a). A self-contained line connection is established along the outline. Outside of this, the material is mechanically separated.

However, the separation can also be carried out by applying pressure and heat by a cutting roller, here a cutting edge 11 and a pressure roller 12, (Fig.4b) this both steps take place simultaneously. When the shape is removed from the mat at the same time a line fault.

Any shape can be chosen.

Line clusters can also be created within the selected forms. In this case, as shown in FIG. 4c , one works with templates 13. Ideally, these templates 13 are produced with the aid of a computer and applied to the material to be processed, for example by means of light. A coordinate system 14 is used here.

The halftone dots, however, can be just as good from the computer's memory to a tool are directed, which exactly generates the given clusters.

Depending on the intervals at which the line crosses are placed, heat patterns can be created produce. Short distances result in low temperatures, high distances result in high temperatures.

The external and controllable power source is also connected using the method for Connection between the thread material. For the connection it is irrelevant whether the conductive core is a carbon fiber, copper or silver core. That is just for elasticity significant.

The use of a soldered connection would - at least the advantages of the heatable tissue at the connection points - destroy. Because just the extra and excess Material accumulation at the connection points would be especially in clothing, but also very annoying with heat compresses and bandages of a general kind.

The above-mentioned embodiments make it clear that they are the goal, namely a To create a connection that remains smooth on the surface of a thin fabric and enables a targeted power supply to the tissue, achieved without complaint.

6 a, b shows an annular insert in an elastic bandage 15, for example warming tissue is sewn into it. The transition 16a, 16b takes place in the edge zones on a fine insulated silver band 17, which leads to the battery holder 18. The battery can For example, be attached to the waistband.

In the case of thermal bandages in particular, the zones to be heated can be precisely aligned. A fabric designed in this way also requires only low energy consumption.

Tissue with a carbon core can also be processed afterwards. you can therefore also be used for the piece that has already been manufactured - or already in use standing - add additional heat patterns.

This is done by applying pressure and heat at selected points of intersection. The more crossing points you create, the warmer the fabric gets this area.

The tissue is primarily used in the therapeutic field.

But also in the area of clothing. It is advantageous here, for example, for diving suits. Heated suits allow you to dive for longer and thus better recovery of the available resources.

The material is also used for emergency blankets, especially for mountain rescue. The ceiling can already be used with the external battery for a known purpose be preheated to a specified temperature in good time.

Claims (13)

1. A process for manufacturing a conductive bond between thread material made from a conductive core and an insulating coating layer, characterised in that the conductive sealing of overlapping threads (3a, 3b) comprises the following steps:

   1. Contacting of the thread material (3a, 3b) to be bonded

   2. Simultaneous opening of the insulating coating layer (2a, 2b)

   3. Pressing of the conductive cores (1a, 1b)

   4. Sealing of the opened coating layer (2a, 2b)

   5. Hardening of the bond
2. The process according to claim 1, characterised in that the opening of the insulating coating layers (2a, 2b) is carried out using a solvent (5).
3. The process according to claim 1, characterised in that the opening of the insulating coating layers (2a, 2b) and the pressing of the conductive cores (1a, 1b) is carried out by simultaneously applying pressure and heat in the contact area (4) of the thread material (3a, 3b) to be bonded, whereby the coating layer (2a, 2b) is opened through the effect of heat, and the conductive cores (1a, 1b) are conductively bonded by means of pressure.
4. The process according to claim 1 or 3, characterised in that the sealing of the opened coating layers (2a, 2b) is carried out by applying an insulating material.
5. The process according to claim 4, characterised in that the insulating material is sprayed on.
6. A manufacture of a thermally conducting fabric made from a continuous thread product having a conductive core and an insulating coating layer, in a continuous material produced in a warp and weft arrangement, by using the process according to claims 1 to 5, characterised in that the outline of the fabric (9) is defined by a self-contained seal, in that, by manufacturing further seals within the chosen outline, conductive clusters are created, and in that the fabric (9) is separated from the continuous material (10) outside of the defined seal.
7. The manufacture according to claim 6, characterised in that the marking of the seals is carried out by means of a grid (14).
8. The manufacture according to claim 6, characterised in that the marking of the seals is carried out by means of a template (13).
9. The manufacture according to claim 7, characterised in that the grid is preferably an optically produced computer grid.
10. The manufacture according to claim 6, characterised in that the seal is achieved by applying pressure and temperature by means of a plunger (6) and in that sealing of the opened material is carried out by feeding additional insulating material through an opening (8) in the plunger (6).
11. The manufacture according to claim 6, characterised in that the seal is achieved by applying pressure and temperature by means of a pressing roller (12) and in that the material, after obtaining the seal, is separated from the continuous material (10) by means of a cutter (11) disposed in its vicinity.
12. The manufacture according to claim 6, characterised in that the fabric separated from the continuous material is connected with an adjustable power supply via further seals and in that, in addition to conductive areas already specified, conductive junctions are obtained by supplying pressure and heat in a pointwise fashion for randomly providing conductive areas of individually selectable expansion.
13. A use of a fabric according to claims 6 to 10 by inserting the conductive fabric into lengths of material for producing clothing, accessories, therapeutic materials, healing aids as well as materials for first aid.

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