WO2004007190A1

WO2004007190A1 - Geotextile

Info

Publication number: WO2004007190A1
Application number: PCT/EP2003/007652
Authority: WO
Inventors: Gerhard Thoenissen
Original assignee: Hänsel Textil GmbH
Priority date: 2002-07-16
Filing date: 2003-07-15
Publication date: 2004-01-22
Also published as: WO2004008059A1; DE10392833D2; WO2004007190A8; AU2003250064A8; AU2003281066A1; DE10392835D2; DE10232269A1; AU2003250064A1

Abstract

The invention relates to a geotextile, in particular for use in geotechnology in contact with the ground or rock, or in the construction field as a construction textile, e.g. in building construction, said geotextile having the form of a flexible, textile, laminated or lined reinforcement composite material comprising at least two layers (2), at least one of which consists of a textile surface structure. According to the invention, discrete adhesion points (3) are located between the layers (2) and preferably permeable, discrete contact surfaces (4), devoid of adhesive and/or discrete cavities are arranged adjacent to said points. The invention also relates to a method for producing the geotextile, in addition to the use thereof.

Description

geotextile

The invention relates to a geotextile made from a flexible textile reinforcement composite consisting of at least two interconnected individual layers of woven and / or knitted fabrics and / or nonwovens and / or scrims for use as reinforcing, construction or protective textiles. In this respect, the invention also relates to a building textile, although in the following it is mostly referred to as geotextile.

Geotextiles are textile fabrics and exist e.g. from fabrics, nonwovens, knitwear or scrims based on raw materials such as ara id, polyamide, polyester, polyethylene, polypropylene or glass fibers. In addition to the starting materials, the type of manufacture and the structure have a significant influence on the properties of geotextiles.

Geotextiles should be able to permanently absorb or absorb predetermined loads and permissible movements. Special requirements to be met are e.g. Absorption of predetermined tensile forces, transmission of predetermined tensile forces, resistance to mechanical damage during installation, - predetermined permeability to water, chemical and microbial resistance and weather resistance.

The geotextiles are used e.g. in road construction, tunnel construction, landfill construction, hydraulic engineering, building construction, railway construction, pipeline construction, for water basins, for earth support structures and ground drainage. As a rule, geotextiles are used for separation, filtering, reinforcement and packaging.

Known laminated geotextiles, consisting of several individual layers, tend to delaminate. Also lead from the outside to be recorded, locally occurring _. Strains for local destruction of the geotextile, because - if available - bond points or the type of bond cannot cope with the occurring forces without damage. The known laminated geotextiles are also relatively stiff and heavy and therefore not easy to handle and lay.

Composites are known from a large number of textile and / or non-textile individual layers which are connected to one another and which are connected to one another by local sewing. The high proportion of the surface of each individual layer between the seams without connection results in a good permeability of air or liquids, but also in a split and thus lower effect against tensile and compressive stresses in the surface or perpendicular to the surface of the composite.

In the case of similar composites made from a large number of high-strength textile individual layers (DE 28 39 151 AI), these are bonded to one another over the entire area by impregnation with synthetic resin in a proportion by mass. Disadvantages of this combination are, in particular, low permeability to air and liquids as well as high weight and high rigidity.

EP 0 603 633 B1 describes a flame-retardant laminate composed of at least 2 textile and one metallic layer, the connection of the individual layers to the multilayer laminate being used mechanically by needling or chemically by means of binders such as polyvinyl alcohol or butadiene styrene copolymers or by binding fibers Nonwovens are made.

Disadvantages for certain applications of such multilayer laminates are the low vertical permeability of gases or liquids when using liquid binders and the low separation forces between two bonded layers when binding fibers are strengthened. DE 199 35 408 AI describes a multi-layer laminate in which at least three textile individual layers are connected to one another by needling in such a way that Fila parts of an external nonwoven are plugged into the other outer layer in a plug-like manner through the middle layer through the middle layer. By such a needling good separation forces between the layers to be bonded are accessible, ^'but there is a structural weakening of the first layer from which the connecting Fasern- or filament parts are removed.

The invention has for its object to provide a geotextile in the form of a flexible textile reinforcement composite which, compared to previously known geotextiles of this type, has the advantages of a given permeability of gases and / or liquids, higher resistance to mechanical stresses, such as tensile and compressive stresses, in terms of usage properties and shock loads and a lower rigidity or good flexibility and is easier and cheaper to manufacture. In addition, the reinforcement composite should be easily adaptable to specified loads in terms of production technology.

This object is solved by the features of claim 1. Advantageous embodiments of the invention are specified in the subclaims.

The flexible textile reinforcement composite according to the invention makes it possible to meet the increasing functional requirements for high resistance, in particular against pressure and puncture stresses acting obliquely to perpendicular to the surface of the reinforcement composite, as well as tensile and shear stresses through the combination according to the invention of several textile individual layers which slide and push through small-area adhesive points are permanently connected to each other, excellent to meet. Resistance to mechanical stress is guaranteed by the small-area, sliding and separable bond points. The application-related total mass per unit area of the textile individual layers is considerably reduced compared to known / by superimposing several individual layers without or with connection, for example by sewing. For the flexible textile reinforcement composite according to the invention, this means reducing the material costs for the valuable individual textile layers and increasing the suitability for use by lowering the weight or weight of the component or product made from the flexible textile reinforcement composite.

The invention is explained in more detail below on the basis of exemplary embodiments. The accompanying drawings show. the schematic cross section of the flexible geotextile reinforcement composite.

As shown schematically in Fig. 1, the inventiveness modern flexible geotextile reinforcing composite 1 of three textile individual layers 2, which according to a particular execution of the invention, form in each case by a laid between each pair of ^'individual layers 2 adhesive nonwoven surface together with formation of local splices 3 are connected, 3 local contact surfaces 4 of the layers 2 and / or cavities 7 being present in addition to the adhesive points 3.

The adhesive points 3 ensure a high resistance to displacement and separation of the individual layers 2 and thus also a high resistance of the geotextile composite against mechanical stresses, for example against pressure, puncture and shear stresses, while the local contact surfaces 4 and cavities 7 for the permeability of gases and / or liquids and for the high _. Softness and low bending stiffness of the composite 1 and the high load absorption capacity are responsible. This optimal combination of, for example, two or more textile individual layers to form a flexible geotextile reinforcing composite is achieved by an adhesive fleece arranged between two textile individual layers, as shown schematically in FIG. 2. This for example through. Foaming extruded adhesive stabilizer 5 has a cobweb-like structure made of polymeric filaments 6 and cavities 7. Upon application of heat, pressure and ^'time to this arrangement of textile individual layers 2 and placed therebetween adhesive stabilizer 5, the polymeric filament parts 6 melt to the adhesive nonwoven fabric 5, penetrate somewhat in the surface of the textile individual layers 2 and form the sliding and separable, spider web-like glue points 3. The cavities 7 present in the web structure of the adhesive fleece 5 then form the permeable contact surfaces in the reinforcing composite 4. Between the properties of the adhesive fleece and the structure and the ^'properties of the reinforcing composite material made the following relationships:

Nonwoven reinforcement composite

Foam extrusion Softness Filament thickness Size and number of glue points Size and number of contact surfaces

Area mass size and number of glue points size and number of contact surfaces

Parts of an extruded adhesive fleece or in combination with. an extruded adhesive fleece 5 it is also possible to use adhesive nets or adhesive dots applied separately to one or both surfaces of the individual layers 2 to be connected, provided that, due to their structure, these adhesives ensure approximately the same number of permeable contact surfaces 4 per cm ^{2 of} connection surface in each connecting layer. To achieve special functional properties, one or both of the surface sides of the geotextile reinforcement composite or within the reinforcement composite can be used in the same operation as when bonding the individual textile individual layers or in a subsequent operation. preferably also by means of an adhesive fleece, non-textile functional surfaces, such as metal foil, foam or the like, usually additionally used flat structures can be arranged.

According to a particular embodiment of the invention, it is provided that between the adhesive points 3 the permeable contact surfaces 4 or cavities 7 are provided in each connecting layer between 30 pieces per cm ² and 300 pieces per cm ² , in particular between 100 and 200 pieces per cm ² , For example, random and / or parallel fleeces are used as adhesive fleeces. The adhesive fleeces are preferably extruded adhesive fleeces, in particular from the polymers polyamide, polyester, polyolefin or polyurethane or corresponding copolymers. In particular, foamed, extruded adhesive fleeces are used. The adhesive fleeces expediently have surface weights between 10 g / m ² to 100 g / m ² , preferably between 15 to 80 g / m ² .

The invention is explained in more detail with the aid of the following examples.

Example 1:

In this exemplary embodiment, the flexible geotextile reinforcement composite 1 consists of three warp-knitted textile individual layers 2 with a mass per unit area of 175, 250 and 400 g / m ² .

The warp knitted fabrics consist of polyester multifilament yarns. For connection between the warp knitted fabric with 175 g / m ² and the warp knitted fabric with 250 g / m ² basis weight, a polyester adhesive fleece 5 with a basis weight of 17 g / m ² and between the warp knitted fabric with 250 g / m ² and the warp knitted fabric with 400 g / m ² basis weight a polyester adhesive fleece 5 with a basis weight of 24 g / m ² arranged. This multi-layer structure is fed to a flat bed laminating machine and solidified under the following conditions to form a reinforcing composite: Temperature in the two adhesive joints: 132 ° C tape gap: 2.5 mm

For the test-technical representation of the high pressure and puncture resistance of the reinforcing composite, the stamp penetration force usual for geotextiles is determined. A cone-shaped metal stamp presses perpendicularly through the surface of the clamped "sample of the reinforcing composite material at a constant speed.

With the construction listed in the exemplary embodiment, a punch penetration force of 12.45 kN was achieved. As a comparison, a stamp penetration force of 12.75 kN was used for a non-glued construction made of the same warp knitted fabrics made of polyester with a four-layer structure consisting of the basis weights 175 g / m ² , 200 g / m ² , 250 g / m ² and 400 g / m ² measured.

Thus, one layer can be saved by the invention.

Example 2:

In this second exemplary embodiment, the flexible reinforcement composite 1 consists of 24 textile individual layers 2 of the same construction. The single layer consists of a fabric made of polyamide filament yarn with a mass per unit area of 60 g / m ² . A polyamide adhesive fleece 5 extruded by foaming is used for the connection, the basis weight of the adhesive fleece being varied according to the invention, starting from the surface side of the flexible reinforcing composite material 1 which was first subjected to, for example, impact or pressure, in this case as follows:

Between the first and sixth individual textile layers 2, 20 g / m ² , between the sixth and twelfth individual textile layers 2, 40 g / m ² , between the twelfth and twentieth textile individual layer 2 are each 60 g / m ^2, between the twentieth and twenty-fourth textile individual layer 2 of 80 g / m ^2.

The thermal bonding takes place on a flat bed laminating system in several passages in order to be able to economically achieve the temperature required for melting the adhesive nonwoven intermediate layers.

With such a flexible construction of the flexible geotextile reinforcement composite 1, the same puncture resistance is achieved as with a comparable laminate of 30 textile individual layers 2 made of the same polymer fabric with a basis weight of 60 g / m ² , connected by sewing. The adhesive fleece surface mass increasing with the number of individual textile layers 2 causes larger and more local adhesive joints 3 and thus a constantly increasing load absorption capacity.

Example 3:

In a further exemplary embodiment, the flexible geotextile reinforcement composite 1 consists of five textile individual layers 2. In the middle of the reinforcement composite 1, a needle-punched nonwoven is made of. Polyester fibers with a basis weight of 200 g / m ² arranged.

A fabric made of polyester thermofilament yarn with a basis weight of 75 g / m ^{2 is} arranged on the two outer surfaces of the needle-punched nonwoven fabric as the strength-bearing textile individual layer ² . A textile individual layer 2 made of needle-punched nonwoven fabric made of glass fibers with a basis weight of 160 g / m ^{2 is} arranged on the outer surfaces of these two fabrics. These two outer textile individual layers 2 made of glass fiber nonwoven guarantee good flame resistance of the flexible geotextile reinforcement composite 1. The five textile individual layers 2 are Nonwovens 5 made of foamed polyester joined together, each of which has a basis weight of 40 g / m ² .

Here, the ^'polyester needle-punched nonwoven According to the invention with the Polyesthergeweben with an adhesive nonwoven fabric 5 with a basis weight of 40 g / m ² and the Polyesthergewebe with the glass fiber non-woven fabrics respectively by two adhesive webs 5 each having a area- aces of 20 g / m ^2, ie a total bonded nonwoven basis weight of 40 g / m ² . 3, the local adhesive points 3a, 3b are produced, the number of adhesive points 3b formed from two layers of adhesive nonwoven having the same total mass being present. This ensures approximately the same high separation resistance in all textile individual layers 2 of the reinforcing composite 1, despite different polymers of the individual layers. On the other hand, loads, especially shock or rapid tensile loads, are absorbed differently.

Example 4:

In a further exemplary embodiment, the flexible geotextile reinforcement composite 1 consists of three textile individual layers 2 of the same construction. Each individual textile layer 2 consists of a fabric made of aramid filament yarn with a mass per unit area of -200- -g / m ² - " ^• - for connection" is an extruded by foaming. Polyamide adhesive fleece 5 is used, the mass per unit area of the adhesive fleece in the laminate being 60 g / m ² between the individual layers. The thermal bonding takes place on a flat bed laminating machine with the fixing conditions required by the adhesive system. This laminate of three textile individual layers gives better puncture resistance than six textile individual layers made of the same material and the same construction.

4 schematically shows a special embodiment of an intermediate product according to the invention of a geotextile according to the invention, which can be widened on the construction site. The intermediate product consists of a pre-fixed or already laminated web and, in the thickness sequence, of a layer 8, for example of a high-strength knitted fabric made of PES (polyester), at least one adhesive nonwoven web 9, a membrane film 10, another adhesive nonwoven web 11 and another layer 12, eg from a non-woven fabric, eg from polypropylene.

This layer structure is at least fixed to one another in such a way that there is a manageable, installable sheet that does not fall apart, but is also not yet present as a reinforcement bond. But it can also be already covered. The layers 8 and 10 and the adhesive nonwoven webs 9, 11 are made wider than the layer 12, so that there is a protrusion 13, 14 in each case. The projections 13, 14 have an exposed area of the adhesive nonwoven web 11, the adhesive of which can be activated by heat and, if appropriate, also pressure.

As shown in FIG. 4, a plurality of sheets of this laminate of flexible geotextile can be widened by arranging the first sheet with the layer 8 and the second sheet with the layer 12 upwards next to one another so that the overlaps 14, 14 overlap. With pressure and heat generating and pressurizing devices (not shown), the geotextile can be finished in the desired width on the construction site by gluing the side areas to one another with the protrusions, with a membrane band 10a in between - because it is duplicated - being removed.

As indicated in FIG. 4, the geotextile according to the invention can thus be widened as desired.

According to the invention, laminated laminates are used as geotextiles, the layers of which are connected to one another by discrete adhesive points, discrete cavities or contact surfaces being provided in addition to the adhesive points. The adhesives used are preferably somewhat elastic and / or flexible so that loads do not immediately break the adhesive. order lead. Such a distribution and configuration is preferably also provided on the adhesion points that acting on an upper layer, mechanical such ^as' static and / or dynamic loads that this situation can not normally withstand, are transmitted over splices in part to the underlying layer, excluding that the top layer is damaged, with the layer below absorbing the load without deleteriously releasing it to the surroundings of the installed geotextile. In this respect, the geotextile according to the invention has a high load absorption capacity.

The glue points result e.g. from a point coating known per se and are accordingly adhesive points. However, so-called adhesive nets made of adhesives, which are known per se, and which produce a network pattern of adhesive spots can also be used for bonding.

According to a preferred embodiment of the invention, however, adhesive fleeces are used. Adhesive nonwovens are thin, very light, flexible fabrics with high elasticity made of thermoplastic, heat-activated, dry adhesive fibers or adhesive monofilaments, which are in the form of thermally bonded, e.g. spinneret-extruded random or extruded parallel nonwovens and which are wound up, for example, wound up on a roll - You can - on - different glue: -. polymer-based, such as polyolefins, copolyamides, copolyethers and terpolymers. The spider web-like structure has many small gaps. The adhesive fleeces are used as web goods with basis weights of, for example, 10 to 100 g / m ² . Pressure, time and activation heat are required for the bond.

For the purposes of the invention, for example in relation to the application, the basis weight and the base polymer of the adhesive nonwoven can be selected. Here, between two layers of geotextile, several layers of adhesive fleece of the same or different F-basis weights and / or the same or different polymer base can be selected so that the load absorption capacity can be controlled by the appropriate selection.

Equally, the load absorption capacity of the geotextile can be specifically adjusted to the application by using adhesive fleeces of different basis weights and / or different polymer bases between several layers of the geotextile.

For the geotextile laminate according to the invention. the adhesive fleece has synergistic effects. It ensures a reversibly extensible in laminate ^', yielding almost elastic adhesive layer which does not impair the flexibility and suppleness of the geotextile so that a geotextile invention to a non-flat surface almost the entire surface up or can be applied and additionally also easy to handle is. In addition, this adhesive has a very low weight and therefore does not burden the geotextile.

In addition, however, an adhesive bond is created with a tangled nonwoven mesh structure in an adhesive layer area, ie from the adhesive bonding of nonwoven filaments to one another and the structural elements of the textile fabrics into which the adhesive penetrates. the. Vliesfilamenten. The resulting nonwoven filament glue points surround or border the contact surfaces and / or cavities. A large number of small-sized adhesive spots are formed, which are randomly or irregularly distributed and also have different dimensions. The glue points essentially have the thread structure and thread length of the threads or thread portions which, during lamination or lamination, have produced the randomly distributed glue points by melting. These glue points are generally of different lengths and / or, thick and / or wide, so that an irregularity is also produced in this respect. It is attributed to these irregularities that those produced with the adhesive fleeces Geotextiles guarantee a surprisingly high and superior load absorption capacity, which may result in a noticeably high and superior resistance to delamination.

In addition to the glue points, the cavities or contact surfaces are also distributed irregularly or confusingly and have correspondingly irregular dimensions. This cavity or surface contact structure also contributes decisively to the superior load absorption capacity, because this structure can buffer shock loads particularly effectively.

In combination with the specific setting of the possibility of controlling the load absorption via the adhesive fleeces, the load absorption can also be controlled via different basis weights of the textile layers and / or the type of textile. In this respect, fabrics and / or knitted fabrics and / or scrims and / or nonwovens are expediently used with the same or different basis weights and / or from different materials, such as aramid, used.

The combination of the textile layers of the geotextiles with non-textile functional surface structures such as metal foils, foams or the like is particularly simple due to the use of the adhesive fleeces. This functional fabric. are preferably also glued over adhesive fleeces.

In particular when using adhesive fleeces, the invention also enables the load absorption to be controlled in such a way that deliberate delamination of textile or non-textile individual layers can take place with absorption and derivation of occurring forces without the geotextile as a whole losing its predetermined functionality.

Claims

claims

1. Geotextile, especially for geotechnical engineering in contact with the ground or rock or for construction engineering as structural textile, e.g. in building construction, in the form of a flexible, textile, laminated or laminated reinforcing composite comprising at least two layers (2), at least one of which consists of a textile fabric, with discrete adhesive points (3) between the layers (2) and next to the adhesive points (3 ) preferably permeable, discrete, adhesive-free contact surfaces (4) and / or discrete cavities (7) are arranged.

2. -Geotextile according to claim 1, d a d u r c h g e k e n n z e i c h n e t, that the second layer (2) is a textile fabric.

3. Geotextile according to claim 1 and / or 2, characterized in that the number of permeable contact points (4) and / or cavities (7) is between 30 pieces per cm ² and 300 pieces per cm ² .

4. Geotextile according to one or more of claims 1 to 3, d a du r c h g e k e nn z e i c h n e t, d a s s the textile fabrics consist of fabrics and / or nonwovens and / or knitted fabrics and / or scrims.

5. geotextile according to claim 4, since you rchgek characterized that the textile fabric made of a polymer, preferably of aramide and / or polyamide and / or polyester and / or Polyethylene and / or polypropylene and / or copolymers and / or glass fibers.

6. geotextile according to one or more of claims 1 to 5, d a d u r c h g e k e n n z e i c h n e t, d a s s it contains at least one non-textile functional fabric, preferably a metal foil and / or a membrane foil and / or a foam.

7. geotextile according to one or more of claims 1 to 6, g e k e n n z e i c h n e t d u r c h resulting from a point coating adhesive spots (3), which are preferably distributed irregularly and / or are preferably of different sizes.

8. Geotextile according to one or more of claims 1 to 7, g e k e n n z e i c h n e t du r c h adhesive sites (3) resulting from an adhesive network in a network pattern.

9. geotextile according to one or more of claims 1 to 8, d a d u r c h g e k e n n z e i c h n e t, that the gluing points (3) consist of an adhesive polymer.

10. geotextile according to claim 9, d a d u r c h g e k e n n z e i c h n e t, that the gluing sites (3) consist of a polyolefin or copolyamide or copolyester or terpolymer.

11. Geotextile according to one or more of claims 1 to 6 and 9 and / or 10, characterized du rch resulting from a nonwoven as a result of a lamination process, randomly distributed adhesive sites (3) in the form of a spider web-like nonwoven web structure, the web filament elements of the contact surfaces (4th ) and / or enclose cavities (7).

12. Geotextile according to claim 11, d a d u r c h g e k e n n z e i c h n e t, that the glue points (3) are of different lengths and / or thick and / or wide and that the contact surfaces (4) and / or the cavities (7) have different dimensions.

13. Geotextile according to one or more of claims 1 to 12, g e k e n n z e i c h n e t d u r c h at least two layers of material-different textile fabrics.

14. Geotextile according to one or more of claims 1 to 13, g e k e n n z e i c h n e t d u r c h at least two layers of the same material, but with different masses.

15. Geotextile according to one or more of claims 1 to 14, d a d u r c h g e k e n n z e i c h n e t, that there are at least three layers (2) with two adhesive layers and the adhesive composition in the two adhesive layers is different.

16. Geotextile according to claim 15, where the different adhesive mass corresponds to the difference in the mass per unit area of the adhesive fleece used (5).

17. Geotextile according to claim 16, characterized in that the number of adhesive points (3) in the adhesive layers is different due to the use of adhesive fleeces of different mass.

18. Geotextile according to claim 16 and / or 17, d a d u r c h g e k e n n z e-i c h. n e t, d a s s the number of contact surfaces (4) and / or the cavities

(7) is different due to the use of adhesive fleeces of different mass.

19. Geotextile according to one or more of claims 1 to 18, d a d u r c h g e k e n n z e i c h n e t, that the glue points (3) and at least one layer of two connected layers (2) consist of the same polymer.

20. Geotextile according to one or more of claims 1 to

19, d a d u r c h g e k e n n z e i c h n e t, that the glue points (3) of an adhesive layer consist of different adhesive polymers.

21. Geotextile according to one or more of claims 1 to 20, characterized in that the amount of adhesive in an adhesive layer between two layers (2) is 10 to 100 g / m ² .

22. Geotextile according to one or more of claims 1 to claim 21, characterized by two adhesive layers between three layers (2) with different numbers of adhesive points (3) with the same amount of adhesive due to, for example, the use of only one adhesive nonwoven web in one adhesive layer and two Adhesive nonwoven webs one above the other in the other adhesive layer, the mass per unit area of the adhesive layers being equal.

23. Geotextile according to one or more of claims 1 to 22, since you rchgek characterized that it has several textile layers (2) of different mass and that between the layers (2) the adhesive layers have the same and / or different masses, resulting from the masses of used adhesive elements.

24. A method for producing a geotextile or building textile in the manner of a flexible textile reinforcement composite, in particular a reinforcement composite with the features of one or more of claims 1 to 22, wherein at least two layers (2), at least one of which consists of a textile fabric, and between which discrete adhesive locations (3) of adhesive melting under the influence of pressure and temperature are arranged, are laminated under the influence of pressure and temperature.

25. The method according to claim 24, d a d u r c h g e k e n n z e i c h n e t, that as a second layer (2) also a textile fabric is used.

26. The method according to claim 24 and / or 25, d a d u r c h g e k e n n z e i c h n e t, d a s s

, for the layers (2) fabrics and / or nonwovens and / or knitted fabrics and / or scrims are used.

27. The method according to claim 26, since you rchgek characterized that fabrics made of aramide and / or polyamide and / or polyester and / or polyethylene and / or polypropylene and / or copolymers thereof and / or glass fibers are used.

28. The method according ^'to one or more of claims 24 to 27, dadurchgeke nn is characterized in that for at least one layer (2) fabric is a non-textile functional, in particular a metal foil and / or a membrane foil and / or foam, is used.

29. The method according to one or more of claims 24 to 28, d a d u r c h g e k e nn z e i c h n e t, that a dot coating is used for the adhesive sites, which preferably has irregularly distributed and / or preferably different sized adhesive spots.

30. The method according to one or more of claims 24 to 29, d a d u r c h g e k e nn z e i c h n e t, that a s s adhesive is used in the form of an adhesive network.

31. The method according to one or more of claims 24 to 30, d a d u r c h g e k e nn z e i c h n e t, that s adhesive from an adhesive polymer is used.

32. The method according to claim 31, d a d u r c h g e k e nn z e i c h n e t that as a adhesive polymer, a polyolefin or copolyamide or copolyester or terpolymer is used.

33. The method according to one or more of claims 24 to 29 and 31 and / or 32, d a d u r c h g e k e n n z e i c h n e t, that an adhesive fleece is used.

34. The method according to claim 33, characterized in that a foamed adhesive fleece is used.

35. The method according to one or more of claims 24 to 34, in that at least two layers of materially different textile fabrics are used.

36. The method according to one or more of claims 24 to 35, that a d r r c h, g e k-e n n z e i c h n e t, that at least two layers of the same material, but with • different mass per unit area, are used.

37. The method according to one or more of claims 24 to 36, d a d u r c h g e k e n n z e i c h-n e t, that at least three layers (2) are used and adhesives, in particular adhesive fleeces of different basis weight, are used between the layers.

38. The method according to one or more of claims 24 to 37, d a d u r c h g e k e n n z e i c h n e t, 'an as a non-woven fabric made of a polymer is used, from which at least one of the layers to be glued consists.

39. The method according to one or more of claims 24 to 38, d a d u r c h g e k e n n z e i c h n e t, that s s non-woven fabrics made of different adhesive polymers are used.

40. The method according to one or more of claims 24 to 39, since du rchgeke nn draws that adhesive fleeces with mass per unit area between 10 and 100 g / m ² are used.

41. The method according to one or more of claims 24 to 40, since du rchgeke nn draws that at least two adhesive fleeces arranged one above the other are used for an adhesive layer.

42. The method according to one or more of claims 24 to 41, d a d u r c h g e k e n n z e i c h n e t, that textile fabrics of different surface masses are used, between which adhesive fleeces of different surface mass are arranged.

43. The method according to one or more of claims 24 to 42, characterized in that a textile is produced from at least two layers (2) and an adhesive layer therebetween, one layer being wider so that protrusions (13, 14) are formed in which is arranged on the surface facing the activatable adhesive.

44. Use of a geotextile or building textile according to one or more of claims 1 to 23, produced by a method according to one or more of claims 24 to 43 in road construction or tunnel construction or landfill construction or in hydraulic engineering or in railway construction or in pipeline construction or for water pools or for Earth support structures or for ground drainage or for building construction.