RU2265095C2 - Duck fabric connected by bonding - Google Patents

Abstract

FIELD: production of duck fabrics.

SUBSTANCE: duck fabric is produced from longitudinal and transverse threads, where longitudinal threads are multifilament threads including multiplicity of single thread filaments and at least one thermally fusible filament of thermoplastic material. This at least one thermally fusible filament of thermoplastic material has lower melting point than single filaments of multifilament thread. After thermal processing, multifilament threads become harder and single filaments defining said multifilament threads are secured in conjunction with thermoplastic material of said at least one thermally fusible thread.

EFFECT: improved quality of duck fabric due to keeping of orientation and continuity of connecting loops necessary for bonding of fabric.

25 cl, 5 dwg

Description

1. The technical field

This invention relates to papermaking and related fields of technology. In particular, this invention relates to a type of technical fabric that can be seamed when it is installed in a machine, such as a press fabric for a press section of a paper machine.

2. Overview of known technical solutions

In the paper manufacturing process, a cellulosic fiber web is formed by depositing fibrous pulp, i.e., an aqueous dispersion of cellulosic fibers, onto a moving forming fabric in the forming section of a paper machine. A large amount of water flows from the pulp through the molding fabric, leaving a cellulose fiber web on the surface of the molding fabric.

The formed web of cellulose fibers is immediately sent from the forming section to the pressing section, which contains a number of compression rolls. A web of cellulose fibers is passed through rolls supported by a press fabric, or, quite often, between two such fabrics. Between the press rolls, the cellulosic fiber web is subjected to compressive forces that squeeze water out of it and cause the cellulosic fibers in the web to adhere to each other to turn the cellulosic fiber web into a paper sheet. Water is absorbed by the press fabric or fabrics and, ideally, does not return to the paper sheet.

Finally, the paper sheet is sent to the drying section, which contains at least one row of rotating drying drums or cylinders, which are heated from the inside by steam. The newly formed paper sheet is guided along the serpentine path sequentially around each of the row of drums using a drying cloth that holds the paper sheet near the surfaces of the drums. Heated drums reduce the water content in the paper sheet to the required level through evaporation.

It is clear that all the fabrics used in the paper machine for molding, pressing and drying are in the form of endless (closed) belts and work like conveyors. In addition, it should be borne in mind that the manufacture of paper is a continuous process that proceeds at significant speeds. That is, the fibrous pulp is continuously deposited on the forming fabric in the forming section, while a freshly made paper sheet is continuously wound into a roll after it leaves the drying section.

As for pressing fabrics, it should be recalled that once they were supplied only in the form of endless ribbons. This is due to the fact that a freshly made web of cellulose fibers is extremely susceptible to the appearance of fingerprints created by any inhomogeneity in the fabric or fabrics used for pressing under the action of press rolls. An endless seamless fabric, similar to that produced by a process known as "endless weaving", has a uniform structure both in its longitudinal direction (the direction of movement of the web in the machine) and in the transverse direction. A seam that can be used to connect the compression fabric to an endless belt during installation in a paper machine is a heterogeneity in the uniform structure of the compression fabric. Therefore, the use of a seam significantly increases the likelihood that imprints will occur on the cellulose fiber web as the web passes between the press rolls.

For this reason, the seam area of any extruded fabric connected to the machine, suitable for this purpose, should behave under load, i.e. when compressed by the rollers of the press or presses, like the rest of the extruded fabric and must have the same water permeability and air, as the rest of the compression fabric, to prevent periodic marking of the manufactured paper product by the seam area.

Despite the significant technical difficulties associated with these requirements, the development of a press fabric to be connected to the machine is highly desirable due to the comparative lightness and safety with which such a fabric can be installed in the pressing section. Ultimately, the obstacles were overcome by developing compression fabrics having seams formed by connecting loops located on the transverse edges of the two ends of the fabric. These loops for stitching fabric are formed by the threads of the longitudinal direction of the fabric. To connect the two ends of the fabric together, the seam is connected by bringing together the two ends of the fabric for pressing, the counter-comb placement of the loops on the two ends of the fabric relative to each other and passing the so-called hairpin or axis through the channel, which is formed by the counter-comb placed connecting loops. It goes without saying that installing on a paper machine a press fabric connected to the machine is much easier and takes much less time than installing an endless ribbon of fabric.

One way to make extruded fabric that can be joined on a paper machine with this seam is to form a flat fabric. In this case, the warp yarns are yarns of the longitudinal direction of the compression fabric. To form the connecting loops, the warp yarns at the end of the fabric are rotated and again weaved at a certain distance into the fabric body in the opposite parallel direction. Another technology, much more preferable, is a modified form of the endless weaving method, which is commonly used to make endless webs of fabric. With the modified endless weaving of the thread, the weft is continuously woven back and forth across the loom, forming a loop at each pass on one of the edges of the fabric by passing the thread around the pin to form a loop. Since the weft yarn, which ultimately becomes the longitudinal yarn in the compression fabric, is continuous, the connecting loops obtained by this method are more durable than those that can be formed by weaving the warp yarns backwards into the edges of the flat fabric.

Initially, single strands of monofilament were used in compression fabrics joined by a machine in both longitudinal and transverse directions. The relative stiffness of the monofilament guarantees the properties necessary for the formation of connecting loops. However, experience has shown that single monofilament yarns are difficult to weave and are not sufficiently elastic in the longitudinal direction for many types of modern presses. Often there were stretching and fracture of the seam.

Another difficulty is the very open, rigid and incompressible structure of the base fabrics woven from single monofilaments. For some papermaking applications, this incompressibility is not a problem and may even be an ideal property. However, where the potential for auxiliary dehydration of the tissue is insufficient, or in the production of paper varieties that are sensitive to prints, a softer and more compressible base fabric is needed.

A more compressible base fabric can be woven from multi-fiber or twisted monofilament yarns instead of single monofilament yarns. However, the filaments of these types do not have the rigidity necessary to form a good loop or to maintain the integrity of the seam area during on-comb placement of loops, which is necessary when the seam is spliced. In addition, since the threads of these types are twisted, the loops that are formed from them tend to rotate relative to the axes lying in the plane of these loops. When this rotation, known as the secondary helix effect, occurs, it causes the hinges to rotate, deflecting them from the ideal orientation needed for on-comb placement. Such a deviation makes it difficult, if not impossible, to achieve the required counter-comb placement of the loops at each end of the fabric during their connection, as well as passing the axis through the channel formed by the loops placed on the comb-comb.

Various attempts are known to overcome these difficulties by creating non-monofilament longitudinal threads that form loops that work like monofilament. In US Pat. No. 5,005,610, the longitudinal threads in a machine-connected tissue for paper production have a complex structure comprising woven monofilament. The braided thread forms stitching loops that resist deformation, and since they are torsionally balanced, not subject to the secondary helix effect, leading to a deviation from the ideal planar geometry of the seam.

In US Pat. No. 5,204,150, the longitudinal yarns in a machine-connected paper fabric are twisted / twisted yarns extruded from a polymer that partially melts during curing by heating the fabric and gives the longitudinal yarns characteristics similar to those of a monofilament yarn. Although the threads are unbalanced due to their twisting, the fusion of these threads, caused by their partial melting, prevents the rotation of the loops, leading to a deviation from the ideal geometry of the seam.

In US Pat. No. 5,394,419, the longitudinal yarns of a paper machine connected to a machine are twisted / twisted yarns having a coating that gives them a monofilament-like structure. The coating may be permanent, semi-permanent or soluble. Even though the threads may be unbalanced, the coating prevents the loops from turning.

In US Pat. No. 5,514,438, the longitudinal yarns of a paper machine connected to a machine have a core of twisted monofilaments surrounded by a braid of multi-fiber yarns. A multifilament braid binds twisted monofilaments to each other and prevents the channel formed by the counter-comb placement of loops formed by longitudinal filaments from one of the core monofilaments during the stitching of the fabric.

Finally, according to US Pat. No. 5,875,822, the longitudinal threads of a machine-connected paper fabric are twisted / twisted threads and form connecting loops along the transverse edges at the two ends of the fabric. A monofilament connecting spiral is attached to these loops at each end of the fabric. Spirals are used to connect the fabric into an endless ribbon, thus forming a fabric having twisted / twisted longitudinal threads with monofilament bonding means.

This invention is another approach to the formation of a machine-fabricable technical fabric having twisted / twisted longitudinal threads with connecting loops that retain their integrity and proper orientation necessary for connecting the fabric.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide a machine-fabricable technical fabric having multi-component longitudinal threads with connecting loops that maintain the proper orientation and integrity necessary for fabric joining.

This goal in the proposed technical fabric is achieved by using multicomponent filaments as the longitudinal direction yarns containing a plurality of single filament fibers and at least one heat-fusible fiber of thermoplastic material that has a melting point lower than the melting point of single fibers of a multicomponent filament. As a result, after heat treatment of a certain given length of a multicomponent filament at a temperature higher than the melting point of the hot-melt fiber, but below the melting point of single curl yarn, the thermoplastic material is melted, flows into the space between the single fibers of the yarn and upon completion of heat treatment hardens again, making multicomponent filament rigid and hold the single fibers together at this given length. This ensures that the connecting loops, which are formed by multicomponent filaments, retain the proper orientation and integrity necessary for stitching the fabric.

In addition, the inclusion of one or more heat-fusible fibers in multicomponent threads allows you to adjust the stiffness of the threads by changing the number and / or diameters of the hot-melt fibers included in the thread. In turn, this allows you to adjust the compressibility and elasticity of the fabric to a greater extent than is possible in fabrics made from threads that do not have hot-melt fibers.

Multicomponent yarns may be twisted from monofilaments, from multi-fiber yarns, may be multi-fiber yarns or twisted / twisted yarns, or a combination thereof. Twisted / twisted yarn is any kind of yarn used in the manufacture of fabrics for paper machines that has several yarns or fibers that are twisted together to the desired degree and, in many cases, are then combined or twisted with other fibers of the same or different type . During the twisting operation, the yarn components are combined with each other, twisting them in the opposite direction to the twisting direction of the single components. Twisted / twisted yarns can accordingly be considered as multicomponent yarns. Multicomponent yarns may also be braided or knitted yarns. In any case, the multicomponent yarn contains at least one hot-melt fiber.

Single fibers included in a multicomponent yarn typically have a circular cross section, although it is obvious that they can have any other kind of cross section, for example a rectangular, oval or multi-leaf section. A multicomponent thread made by twisting / twisting, weaving or knitting may have a cross section that is not circular in shape.

The proposed technical fabric to be joined on a machine can be woven using a modified technology of endless weaving from a system of longitudinal threads and a system of transverse threads, where the longitudinal threads are multicomponent threads described above. Alternatively, the technical fabric can be woven flat, while the longitudinal threads, which are warp yarns during the weaving process, must also be multicomponent yarns. In any case, the technical fabric has a rectangular shape with a length, width, two longitudinal edges and two transverse edges.

When using the modified technology of endless weaving, longitudinal (multicomponent) threads stretch back and forth continuously to the length of the technical fabric between the two transverse edges and form the first set of connecting loops along one of the two transverse edges and the second set of connecting loops along the other of the two transverse edges. After applying the heat treatment described above, which can be performed at any time during the manufacturing process, even at the stage of forming the filaments, the multicomponent filaments and stitch loops that are formed from them become stiffer and a plurality of single fibers are bonded together with at least a thermoplastic material one hot-melt fiber of a multicomponent filament.

On the other hand, when the technical fabric is woven flat, the warp threads exiting from the two transverse edges are turned back and woven at a certain distance into the body of the fabric in the opposite direction to form the connecting loops.

Technical fabric is spliced into an endless ribbon by an inter-comb connection of the connecting loops of the first set to the connecting loops of the second set and passing the axis through the channel formed by the placed anti-comb loops to form a loop connection in the form of a seam connecting together the two transverse edges of the fabric.

It is understood that multicomponent yarns can also be used in the transverse direction to improve the lateral stability of the fabric. In an endless woven structure with or without seam, the stiffness of the transverse thread directly determines the number of longitudinal and transverse threads that can be included in the fabric. The use of weaving yarns of lower stiffness makes it possible to obtain a wider range of fabric density and, in particular, a greater value of fabric density. When the multicomponent yarn described herein is used in the transverse direction, the number of longitudinal and transverse yarns in the fabric can be increased, and the required stiffness can be given to the multicomponent yarn by heating after the fabric has been woven.

Such a multicomponent thread can also be used as a thread of longitudinal direction in a flat-woven material, which is joined into an endless ribbon by a woven seam, because they can be designed so that they acquire the deformation required to form such a seam.

Thus, according to the invention, there is provided a technical fabric comprising a system of longitudinal threads and a system of transverse threads, wherein the longitudinal threads are interwoven with the transverse threads to form a technical fabric in the form of a rectangle having a length, a width, two surfaces, two longitudinal edges and two transverse edges, longitudinal filaments are multicomponent filaments containing a plurality of single filament fibers and at least one heat-fusible fiber of a thermoplastic material that has a melting point of the same as the melting point of these single fibers of the filament, so that after heat treatment the multicomponent filaments become stiffer and many of their single fibers are bonded to each other with the thermoplastic material of the specified at least one hot-melt fiber.

Such technical fabric can be made with the possibility of closing it into an endless tape using a loop connection when it is installed in the machine, while the longitudinal threads are interwoven with transverse threads in a modified way of endless weaving, in which the longitudinal threads pass continuously back and forth along the mentioned length of the technical fabric between its two transverse edges and form the first set of connecting loops along one of the two transverse edges and the second set of connecting loops along ugoy of the two lateral edges; whereby the technical fabric is joined into an endless ribbon by counter-combing the placement of the first plurality of connecting loops relative to the second set of connecting loops and passing the axis through the channel formed by the anti-comb-located connecting loops to form said loop connection.

In addition, such technical fabric can be made to close it into an endless ribbon by connecting it with a hairpin when it is installed in the machine, while the longitudinal threads are interwoven with transverse threads by the flat weaving method, in which the longitudinal threads along two transverse edges are turned back and woven back to the technical fabric, forming the first set of connecting loops along one of the two transverse edges and the second set of connecting loops along the other of the two transverse edges; whereby the technical fabric is joined into an endless ribbon by counter-comb placement of the first plurality of connecting loops relative to the second set of connecting loops and passing the axis through the channel formed by the anti-comb-located connecting loops to form the said connection with a hairpin.

In such a technical fabric, the threads of the longitudinal thread system can be interwoven with the threads of the transverse thread system in a flat weaving manner, and the two transverse edges of the technical fabric can be joined together by a woven seam to form an endless ribbon from the technical fabric.

The aforementioned multicomponent yarns may be twisted monofilament yarns or twisted yarns twisted from multifilament yarns.

Multicomponent yarns may be multi-fiber yarns. They can also be twisted / twisted threads.

Multicomponent yarns may be selected from the group consisting of twisted monofilament yarns, twisted multifilament yarns, multifilament yarns, twisted / twisted yarns, and combinations thereof.

Multicomponent threads may be knitted or braided threads.

Single fibers of multicomponent filaments can be extruded from a polymeric material. The polymeric material may be selected from the group consisting of polyamide, polyester, polyether ketone, polypropylene, polyaramide, polyolefin, polyphenylene sulfide (PPS) and polyethylene terephthalate (PET) resins and their copolymers.

The thermoplastic material of the at least one hot-melt fiber can be selected from the group consisting of polyamide 66, low-melting polyamide 6, and polyurethane.

At least one hot-melt fiber may be monofilament or multifilament fiber.

At least one heat-fusible fiber can be cut from a film of thermoplastic material or made of non-woven material.

Transverse threads in the proposed fabric can also be multicomponent threads.

Technical fabric may further comprise at least one staple fiber webs attached to one of its two surfaces.

In addition, the aforementioned technical fabric, made with the possibility of closing it in an endless ribbon, may further comprise a first connecting spiral having a plurality of turns arranged counter-comb with connecting loops of the first set of connecting loops on one of the two transverse edges of the technical fabric and attached to them at least one connecting thread extending in the transverse direction; and a second connecting spiral having a plurality of turns arranged counter-comb with the connecting loops of the second set of connecting loops on the other of the two transverse edges of the technical fabric and attached to them by at least one connecting thread extending in the transverse direction; due to which the technical fabric closes into an endless ribbon by counter-comb placement of the turns of the first connecting spiral relative to the turns of the second connecting spiral and passing the axis through the channel formed by the counter-comb-placed turns of these spirals to form the specified loop connection.

In such a fabric, the first and second connecting spirals can be made of monofilament, for example, such monofilament spirals can be extruded from polyamide.

In addition, the technical fabric may further comprise at least one cushioning thread inside the first connecting spiral. It may also further comprise at least one cushioning thread inside the second connecting spiral.

The invention will now be described in more detail with reference to the drawings listed below.

List of drawings

Figure 1 shows a schematic illustration of a technical fabric connected to a machine in perspective.

Figure 2 shows a schematic perspective view of the two ends of a technical fabric connected to a machine before connecting them to each other.

Figure 3 shows a cross section of the technical fabric in the direction of the warp.

Figure 4 shows a cross-section of the seam area of the technical fabric in the direction of the weft.

Figure 5 shows a section of the seam area of technical fabric, similar to the section presented in figure 4, for another form of embodiment of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Turning now to FIG. 1, a schematic perspective view of a technical fabric 10 connected to a machine is given. The fabric 10 takes the form of an endless ribbon when its two ends 12, 14 are joined to each other by a seam 16.

Figure 2 is a schematic perspective view of the two ends 12, 14 of the technical fabric 10 connected to the machine before they are attached to each other. On the transverse edges of each of the two ends 12, 14 there are many connecting loops 18 for stitching the fabric. To attach the two ends 12, 14 to each other, they are brought together, while the loops 18 of each of the ends are interleaved through one, that is, they are positioned counter-comb relative to each other. The counter-comb-mounted loops 18 form a channel through which a pin or an axis, a thread or a threadlike element can be passed to fasten the ends 12, 14 to each other.

Figure 3 shows made in the direction of the warp threads section of technical fabric 20, which can be applied to this invention. The fabric 20 is shown woven with double-sided weaving, although it should be understood that such weaving is shown only as an example, and the invention can be implemented with fabrics 20 that are woven with other weaves, such as single, double and triple weaves or weaves with even more layers, or with fabrics that are layered and contain several layers of fabric. The fabric 20 may be the base fabric for the press fabric and, accordingly, one or more layers of staple fiber webs can be attached to it on one or both sides, or it may have some kind of coating. The fabric 20 can also be used in any other section of the paper machine, that is, in the forming or drying section, or as the base of a polymer coated conveyor belt for the paper industry. In addition, the fabric 20 can be used as a belt of a corrugating machine or as a base for it, as a fabric for molding pulp, for example, as a thickener tape with double rolls, or as other technological conveyor belts for industry.

Fabric 20 is woven using a modified method of endless weaving. In this case, warp threads 22 will eventually become threads of the transverse direction, and weft threads 24 will eventually become threads of the longitudinal direction, if you rely on the orientation of the threads relative to the machine on which the fabric 20 is mounted.

The warp yarns 22, i.e., the transverse yarns of the fabric 20 connected to the machine, can be any of the yarns used to make bases for fabrics used in paper machines, or processing tapes for the paper industry, or other fabrics and tapes mentioned above. That is, monofilament yarns or multicomponent yarns described above can be used as warp yarns 22.

On the other hand, the weft yarns 24, that is, the longitudinal yarns of the machine-connected fabric 20, are multi-component yarns. As described above, multicomponent yarns may be twisted from monofilaments, twisted from multi-fiber threads, may be multi-fiber or twisted / twisted threads, or combinations thereof. Multicomponent yarns may also be braided or knitted yarns.

In any case, single fibers of the warp yarns 22 (transverse yarns) and weft yarns 24 (longitudinal yarns) are extruded from synthetic polymeric materials such as polyamide, polyester, polyetherketone, polypropylene, polyaramide, polyolefin, polyphenylene sulfide (PPS) and polyethylene terephthalate PET) resins and their copolymers, and are combined into yarns according to methods well known in the textile industry and, in particular, in the manufacture of fabrics for paper machines.

Weft (longitudinal) filaments, in addition to having a plurality of single fibers, also contain at least one thermofusible fiber of thermoplastic material, the thermoplastic material having a melting point lower than the melting point of single filament fibers forming a multicomponent filament. As a result of this, after heat treatment with a temperature above the melting point of the heat-fusible fiber, but below the melting point of single fibers of a multicomponent filament, the thermoplastic material stiffens the multicomponent filament, as well as the loops 18 formed from it, and holds the single fibers of the multicomponent filament together. Due to this, the fabric loop stitch loops that are formed from multicomponent filaments retain the proper orientation and the integrity required for such stitching. The thermoplastic material may, for example, be polyamide 66, fusible polyamide 6, or polyurethane.

As noted above, a multicomponent yarn contains at least one heat-fusible fiber of a thermoplastic material. That is, it may contain one, two, three or more hot-melt fibers. The hot-melt fiber can be monofilament or multifilament fiber, and both types of fibers can have a non-circular cross section. It can be extruded or cut from a film of thermoplastic material. It may also be fiber or fibers obtained or cut from a web of nonwoven fabric made from polyamide or polyurethane with a low melting point. This type of nonwoven fabric is marketed by Sharnet.

In the manufacturing process of fabric 20 in a modified way of endless weaving, the weft yarns are continuously woven back and forth across the loom, and with each pass along the width at one of the two transverse edges of the fabric 20, connecting loops for stitching the fabric are woven when the thread passes around the pin to form loops . Several of the schemes described in US Pat. No. 3,815,645, incorporated herein by reference, are suitable for the manufacture of machine-coupled fabrics for the manufacture of paper using a modified method of endless weaving and can be used in the practice of this invention.

Figure 4 shows a cross-section made in the weft direction of the seam region of the fabric 20 obtained as a result of a modified endless weaving process. The weft yarns, which will eventually become the longitudinal yarns of the fabric 20, are braided around the loop forming pin 26 in a continuous manner to form the connecting loops 18 for stitching the fabric.

It should be understood that the pin 26 forming the loops must be removed to give the fabric 20 the shape that it can easily be installed in a particular machine. It is also clear that since the weft (longitudinal) yarns are multicomponent yarns, the loops 18 can rotate, deviating from the ideal geometry of the connecting loops due to the secondary helix effect, and deform as soon as the pin 26 forming the loops is removed, making subsequent stitching of the fabric difficult or impossible.

For this reason, heat treatment, which makes it stiff and integrates multicomponent filaments, is performed before the pin 26 forming the loops is removed. However, it should be clear that the heat treatment can be performed either before or after the fabric 20 has been woven, and even at the stage of forming the thread. In addition, if the staple fiber webs must be attached to the fabric 20 by needle piercing, heat treatment can be performed either before or after the needle piercing process, although heat treatment after needle piercing is preferable because the thermoplastic material of at least one heat-fusible fiber improves the fixing of the weave material from staple fiber in the base fabric 20.

Technical fabric is spliced into an endless ribbon by counter-comb placement of the connecting loops 18 located at one end of the fabric, relative to the loops at its other end and passing the axis through the channel formed by the counter-comb placed loops 18. Alternatively, as shown in FIG. 5, where another section of the seam region of the fabric 20 is shown, made in the longitudinal direction, connecting spirals 28 can be attached to the loops 18, which are used to connect the fabric 20 into an endless strip.

In particular, the connecting spirals 28 can be arranged counter-comb with respect to the connecting loops 18 and connected to them by means of connecting threads 30. Thus, the fabric 20 having multicomponent threads in the longitudinal direction can be provided with monofilament connecting loops in the form of separate turns of connecting spirals 28.

The connecting spirals 28 may be made of monofilament, preferably of extruded polyamide resin. The diameter of the monofilament may be, for example, 0.40 or 0.50 mm. During installation of the fabric 20 in the paper machine, the individual turns of the connecting spirals 28, being monofilament, can be easily placed counter-comb relative to each other and connected to each other by passing the axis 32 through the channel formed by the counter-comb placed coils. The filament yarns 34 can be inserted into the connecting spirals 28 so that the seam area has characteristics similar to the rest of the fabric 20. The yarn 30 and the filament yarns 34 can be of the same types that are used as the main (transverse) yarns 22 of the fabric 20 As axis 32, a single monofilament yarn, several monofilament yarns not twisted relative to each other, or twisted, twisted, woven or knitted together, or one or more multicomponent s described above as longitudinal (filling) yarns 24 of fabric 20.

For ordinary specialists in this field of technology it is obvious that there are various options for creating the above-described technical fabric in the framework of the invention, the volume of which is determined by the attached claims.

Claims (25)

1. Technical fabric containing a system of longitudinal threads and a system of transverse threads, where the longitudinal threads are intertwined with the transverse threads to form a technical fabric in the form of a rectangle having a length, width, two surfaces, two longitudinal edges and two transverse edges, the longitudinal threads being multicomponent filaments containing a plurality of single fibers, yarns and at least one heat-fusible fiber of a thermoplastic material that has a melting point lower than the melting point of said single the fiber of the filament, so that after heat treatment, the multicomponent filaments become stiffer and a plurality of their single fibers are bonded to each other by the thermoplastic material of said at least one thermofusible fiber. 2. Technical fabric according to claim 1, characterized in that it is made with the possibility of locking it into an endless tape using a loop connection when it is installed in the machine, while the longitudinal threads are interwoven with transverse threads in a modified way of endless weaving, in which the longitudinal threads pass continuously back and forth along the mentioned length of technical fabric between its two transverse edges and form the first set of connecting loops along one of the two transverse edges and the second set are connecting x loops along the other of the two transverse edges, whereby the technical fabric is connected into an endless ribbon by counter-combing the first set of connecting loops relative to the second set of connecting loops and passing the axis through the channel formed by the anti-comb-located connecting loops to form said loop connection . 3. Technical fabric according to claim 1, characterized in that it is made with the possibility of locking it into an endless ribbon by connecting it with a hairpin when it is installed in a machine, while the longitudinal threads are interwoven with transverse threads by the flat weaving method, in which the longitudinal threads along two the transverse edges are turned back and woven back into the technical fabric, forming the first set of connecting loops along one of the two transverse edges and the second set of connecting loops along the other of the two transverse edges, b agodarya which connects industrial fabric into endless form by interdigitating placing the first plurality of seaming loops relative to the second plurality of seaming loops and passing through the axis of the passage defined by the interdigitated seaming loops arranged to generate said connection pin. 4. The technical fabric according to claim 1, characterized in that the threads of the longitudinal thread system are interwoven with the threads of the transverse thread system by flat weaving, and the two transverse edges of the technical fabric are connected to each other by a woven seam to form an endless ribbon from the technical fabric. 5. Technical fabric according to claim 1, characterized in that the multicomponent threads are twisted monofilament threads. 6. Technical fabric according to claim 1, characterized in that the multicomponent yarns are twisted yarns twisted from multi-fiber yarns. 7. Technical fabric according to claim 1, characterized in that the multicomponent threads are multi-fiber threads. 8. Technical fabric according to claim 1, characterized in that the multicomponent threads are twisted / twisted threads. 9. The technical fabric according to claim 1, characterized in that the multicomponent yarns are yarns selected from the group consisting of twisted yarn from monofilament, twisted yarn from multifilament yarn, multifilament yarn, twisted / twisted yarn, and combinations thereof. 10. Technical fabric according to claim 1, characterized in that the multicomponent threads are knitted threads. 11. Technical fabric according to claim 1, characterized in that the multicomponent threads are braided threads. 12. Technical fabric according to claim 1, characterized in that the single fibers of multicomponent filaments are extruded from a polymeric material. 13. Technical fabric according to claim 12, characterized in that the polymeric material is selected from the group consisting of polyamide, polyester, polyester ketone, polypropylene, polyaramide, polyolefin, polyphenylene sulfide (PPS) and polyethylene terephthalate (PET) resins and their copolymers. 14. Technical fabric according to claim 1, characterized in that the thermoplastic material of at least one hot-melt fiber is selected from the group consisting of polyamide 66, low-melting polyamide 6 and polyurethane. 15. Technical fabric according to claim 1, characterized in that at least one hot-meltable fiber is monofilament. 16. Technical fabric according to claim 1, characterized in that at least one hot-melt fiber is a multifilament fiber. 17. Technical fabric according to claim 1, characterized in that at least one heat-fusible fiber is cut from a film of thermoplastic material. 18. Technical fabric according to claim 1, characterized in that at least one hot-melt fiber is made of non-woven material. 19. Technical fabric according to claim 1, characterized in that the transverse threads are also multicomponent threads. 20. Technical fabric according to claim 1, characterized in that it further comprises at least one staple fiber comb layer attached to one of its two surfaces. 21. Technical fabric according to claim 2 or 3, characterized in that it further comprises a first connecting spiral having a plurality of turns arranged counter-comb with connecting loops of the first set of connecting loops on one of the two transverse edges of the technical fabric and attached to them, at least one connecting thread extending in the transverse direction, and the second connecting spiral having a plurality of turns arranged counter-comb with the connecting loops of the second set will connect loop on the other of the two transverse edges of the technical fabric and attached to them by at least one connecting thread extending in the transverse direction, whereby the technical fabric closes into an endless ribbon by counter-comb placement of the turns of the first connecting spiral relative to the turns of the second connecting spiral and transmitting the axis through the channel formed by the counter-comb-placed turns of these spirals, to form the specified loop connection. 22. Technical fabric according to item 21, characterized in that the first and second connecting spirals are made of monofilament. 23. Technical fabric according to claim 22, characterized in that said monofilament coils are extruded from polyamide. 24. Technical fabric according to item 21, characterized in that it further comprises at least one cushioning thread inside the first connecting spiral. 25. Technical fabric according to item 21, characterized in that it further comprises at least one cushioning thread inside the second connecting spiral.

Images