DE102008000722B4 - Process for the production of textile reinforcement structures and textile spacer structure - Google Patents

Abstract

Process for the production of textile reinforcing structures, in which at least two outer stretched reinforcing textile layers (A, D) and at least two inner folded reinforcing textile layers (B, C) arranged between these outer stretched reinforcing textiles are connected to one another, wherein the inner folded reinforcing textile layers (B, C) distributed over their entire length have a plurality of folding zones (19), in which they along at least three over the entire width of the inner reinforcing textiles (B, C) extending folds (20, 21, 22) in the form of at least two outer folds (20 22) and at least one middle fold (21), said at least two outer folds (20, 22) being juxtaposed to form a textile-reinforced axial web (25) which faces the unfolded regions (27) of the inner reinforcing textiles (20). B, C) is aligned with a certain folding angle (α) and d extending from the abutting outer folds (20, 22) to the adjacent inner reinforcing textile layer (C, B), characterized in that the method is carried out according to the principle of processing the structure in steps, comprising the following method steps: a) specifying the shape of the textile reinforcement structure, b) calculating the pattern sheet of the sewing plan according to generally known methods of the finishing technique for each layer extra, c) laying the individual reinforcement textile layers (A, B, C, D) together, d) setting the points for fixing the reinforcement textile layers (A, B , C, D) as a whole, e) fixing the superimposed reinforcement textile sheets (A, B, C, D) by means of fixing elements, f) sewing the first seam (1) according to the calculated sewing plan, g) pulling out the fixing elements and thus releasing the reinforcement textiles (A, B, C, D), h) new folds of individual reinforcement textiles (B, C), i) correspondingly from step d) w pus method and namely until the last seam is completed, whereby per folding zone (19) on the one hand at least one compound (2, 4, 6, 8, 10, 12, 14, 16, 18) between the central fold (21) of textile-reinforced axial web (25), the adjacent inner reinforcing textile layer (C, B) and an outer reinforcing textile layer (D, A) adjacent to said inner reinforcing textile layer (C, B) and at least one compound (1, 3, 5, 7, 9, 11 , 13, 15, 17) between the individual outer folds (20, 22) and their adjacent outer reinforcing textile layer (A, D).

Description

The invention relates to a method for the production of textile reinforcing structures according to the principle of the seam-like execution of the respective structure according to the preamble of patent claim 1.

Furthermore, the invention relates to a textile spacer structure obtained by a method according to the invention.

Textile reinforcement structures are often designed as spacer structures, which are also known as "sandwich structures" or "spacer preforms". These are manufactured in their simplest form in such a way that webs are made between two flat textile layers or layered textile layers containing reinforcing textiles, which consist of the same material as the reinforcing textiles. Possible reinforcing textiles included include, for example, glass and carbon filaments as well as thermoplastic elements such as polypropylene filaments. Under pressure and heat, under the press or in an autoclave, this structure is then solidified, whereby the strength increases with a higher proportion of reinforcing textile. An advancement is in the DE 10 2004 062 895 A1 which discloses a textile spacer structure for lightweight multilayer sandwich type elements such as planar and curved plates or crash housing, and a method for making this spacing structure. The further development is that a layer is laid flat, with spacers, especially cores made of wood, whereupon the second layer is laid meandering over these spacers on the first layer and both layers are sewn together. To reinforce a third layer, again flat, placed on the resulting structure and sewn in the connection. The spacers are pulled out to form cavities, the geometry of which is formed according to the outer shape of the spacers. A major disadvantage of the resulting textile spacer structures is that the wall thicknesses vary within the spacer structure and in this way the production of textile "spacer preforms" is possible only with unequal wall thicknesses. The wall thicknesses differ depending on the number of sewn layers. This means that the wall thickness is formed once as a layer thickness, then again in the form of two layer thicknesses, etc. In addition, the position fixation of the fabric according to this prior art is only possible manually, which on the one hand causes high inaccuracies and on the other hand, no reproducibility of the respective fabric allows. The necessary tools must also be made separately for each geometry to be produced, which of course causes additional costs. Overall, the production and further processing of textile spacer structures made of thermoplastic reinforcement textiles is very expensive and expensive.

In the DE 60 303 348 T2 the production of two by means of several filamentary composite webs from each other at a distance held Verb and materials layers is described. A flexible core layer having two opposing sides, which need not be flat, but may also have a cylindrical, conical or prismatic shape, is made of a material that is impermeable to resin but penetrable to a needle. In each case one, also flexible fiber reinforcement is formed on each outer side in the form of a layer, certainly with different thickness. Both fiber reinforcements have a fiber structure. This creates a sandwich structure that is flexible in itself. All three elements, both the core layer and the two fiber reinforcements, are sewn together to form cavities. Furthermore, in the DE 60 303 348 T2 the shapes and the compositions of the yarn threads as well as the individual layers of the seams are described in more detail. After sewing, the resulting sandwich structure is compacted and then cured after impregnation with resin.

The EP 1 459 873 A2 also describes a molding process and associated apparatus for making monolithic interconnect structures. Textile layers are connected with each other by means of seams. During the actual subsequent molding process, which involves resin impregnation and subsequent curing, so-called bubbles are used which are inflatable and whose air is vented after completion of the manufacturing process. This manufacturing process is very cumbersome and guarantees by no means a reproducibility and a uniform geometric shape.

From the DE 198 36 629 C1 is an aerodynamic surface structure known with a consisting of an upper shell and a lower shell and arranged transversely to a longitudinal direction ribs and possibly extending in the longitudinal direction of spars existing structure which is formed of fiber-reinforced material. The tensile structure can be prepared by avoiding bolt connections in that for forming the structure in the longitudinal direction preformed hollow segments each having a top wall, a bottom wall and a bottom are formed and nested in such a way that the bottom and portions of the top wall and the bottom wall of a Hollow segments protrude into an open side of the adjacent, receiving hollow segment and that the hollow segments are connected in the area of the sections with their upper and lower sides flat against each other and that the top and bottom of the structure formed from the hollow segments are covered with a cover segments spanning the hollow segments. This method requires a complex pre-production of the hollow segments by textile processing methods, in particular by sewing.

The object underlying the invention is to provide a method which allows the production of textile reinforcing structures, which are formed as spacer structures with gleichwandigen wall thicknesses, and the production of such gleichwandiger textile spacer structures with different geometries. The method should be applicable for the different thicknesses of the reinforcement textiles of the individual layers. It should be dispensed with in the production of the so-called spacer, such as a heartwood with the corresponding required geometry, as well as the use of pre-produced hollow segments. The ultimate goal is the fabrication of so-called "spacer preforms".

The object of the invention is to provide a method of manufacturing textile reinforcing structures in which at least two outer stretched reinforcing textiles and at least two inner folded reinforcing textiles disposed between these outer stretched reinforcing textiles are joined together, the inner folded reinforcing textiles being over their entire length distributed having a plurality of folding zones, in which they are folded along at least three extending over the entire width of the inner Verstärkstextillagen folds in the form of at least two outer folds and at least one middle fold, wherein the at least two outer folds are placed against each other to form a textile reinforced Axialsteges which is aligned with respect to the unfolded areas of the inner reinforcing textiles with a certain folding angle and thereby from the ane extended outer folds to the adjacent inner reinforcing textile layer extends. The method can be carried out with a CNC-controlled industrial sewing machine of known type, on the machine table, an arrangement in the form of a structure and with the function as Nähguthalterung (-fixierung) and Nähgutführung is grown. Formed is the actual fixing device as a clamp-shaped element, while the structure itself is a sheet-like structure, wherein in strips of the clamp-shaped element - holes are introduced - according to the required structure of the fabric to be produced. In these holes then, after edition of the textile fabric, the Fixierklammern inserted and held by grooves.

• a) Vorgabe der Form der textilen Verstärkungsstruktur,
• Errechnen des Musterbogens des Nähplanes nach allgemein bekannten Verfahren der Konfektionstechnik für jede Verstärkungstextillage extra,
• c) Aufeinanderlegen der einzelnen Verstärkungstextillagen,
• d) Festlegen der Punkte zum Fixieren der Verstärkungstextillagen als Ganzes,
• e) Fixieren der aufeinandergelegten Verstärkungstextillagen mit Hilfe von Fixierelementen,
• f) Nähen der ersten Naht entsprechend dem errechneten Nähplan,
• g) Herausziehen der Fixierelemente und somit Lösen der Verstärkungstextillagen,
• h) Flächengebilde einzelner Verstärkungstextillagen neu falten,
• i) entsprechend ab Schritt d) weiterverfahren und zwar so lange, bis die letzte Naht fertiggestellt ist, wodurch pro Faltzone einerseits mindestens eine Verbindung zwischen dem mittleren Falz des textilverstärkten Axialsteges, der benachbarten inneren Verstärkungstextillage und einer dieser inneren Verstärkungstextillage benachbarten äußeren Verstärkungstextillage sowie andererseits mindestens eine Verbindung zwischen den einzelnen äußeren Falzen und deren benachbarter äußerer Verstärkungstextillage hergestellt wird.

The process according to the invention for the production of textile reinforcing structures is characterized by the principle of the close processing of the structure. The following procedure steps are to be processed:

• a) specification of the shape of the textile reinforcement structure,
• Calculation of the pattern sheet of sewing plan according to well-known procedures of the finishing technique for each reinforcement textile layer extra,
• c) placing the individual reinforcement textiles together,
• d) setting the points for fixing the reinforcement textiles as a whole,
• e) fixing the superimposed reinforcement textiles with the aid of fixing elements,
• f) sewing the first seam according to the calculated sewing plan,
• g) pulling out the fixing elements and thus releasing the reinforcement textile layers,
• h) folding new fabrics of individual reinforcement textiles,
• i) according to step d) on and on until the last seam is completed, whereby per folding zone on the one hand, at least one connection between the middle fold of the textile reinforced Axialsteges, the adjacent inner reinforcing textile layer and one of these inner Verstärkstextillage adjacent outer reinforcing textile layer and on the other hand at least a connection is made between the individual outer folds and their adjacent outer reinforcing textile layer.

In a particularly preferred embodiment of the invention, each folding zone comprises a total of three folds extending over the entire width of the inner reinforcing textile layers, in the form of two outer folds and a middle fold, which delimit two identically dimensioned walls on both sides of the middle fold. The two outer folds are placed against each other so that the two equal-sized walls form from the juxtaposed outer folds to the middle fold a double-walled textile-reinforced axial web. This double-walled textile-reinforced axial web is aligned with respect to the unfolded regions of the inner reinforcing textile layer with a specific folding angle α. In this case, the double-walled web extends from the outer folds to the adjacent inner reinforcing textile layer, which it contacts with the middle fold.

In an advantageous embodiment of the invention, the two compounds of the two outer folds of a folding zone with the adjacent outer reinforcing textile layer placed in the same place.

Preferably, the compounds in the form of sutures, in particular of double stitches formed. Alternatively, the compounds can also be designed as adhesive or welded joints.

According to the concept of the invention, cavities in the form of chambers are formed in the reinforcing textile, which are delimited on the one hand by two opposite unfolded regions of the inner reinforcing textile layers and on the other by two opposing textile-reinforced axial webs. The geometry of these cavities is determined by the respective folding angle. In this case, depending on the folding angle in addition to rectangular (at a folding angle of ninety degrees) and trapezoidal cavities or chambers and triangular cavities or chambers are possible. "Spacer preforms" with triangular chambers are particularly preferred because, interestingly enough, the highest resilience could be demonstrated in the triangular shape.

Textile reinforced axial webs are preferably formed by both adjacent inner reinforcing textiles. In a preferred embodiment, the textile-reinforced axial webs of two adjacent inner reinforcing textile layers are arranged in alternating sequence between the inner adjacent reinforcing textiles, so that a chamber is bounded in each case by two textile-reinforced axial webs, wherein a textile-reinforced axial web of the one inner reinforcing textile layer and the other textile-reinforced Axialsteg of the other internal reinforcing textile layer is formed.

Preferably, the calculation of the sample sheet is computer-assisted (CAD calculation).

The number of reinforcing textiles is preferably at least four, otherwise a number of reinforcing textiles divisible by four, wherein the reinforcing textiles may in turn consist of individual layers.

A chamber formation is preferably carried out by folding the middle reinforcing textile layers B and C, wherein in each case the unnecessary outer reinforcing textile layer, ie either A or D, is folded away during the corresponding sewing process. The concrete folding angle and, consequently, the concrete seam shape decide which geometry the cavity created by the folding has. In addition to rectangular and trapezoidal cavities or chambers and triangular cavities or chambers are possible. "Spacer preform" with triangular chambers are, as already mentioned, particularly preferred, since in the triangular shape, interestingly, the highest load capacity could be detected.

The principle of the close processing of the structure is applicable for arbitrarily large "spacer preforms".

Overall, it can be estimated that with the new method, the production of different, load-oriented textile spacer structures in high quality and with high reproducibility is possible. The conversion-technical transfer of this process into the industrial production would provide enormous cost savings in the production of textile spacer structures. A further aspect of achieving the object of the invention relates to a textile spacing structure obtained by the method according to the invention, namely a textile reinforcing structure with superposed reinforcing textile layers comprising at least two outer stretched textile reinforcing textile layers and at least two inner folded reinforcing textile layers disposed between these outer elongated reinforcing textile layers combines. In this case, the inner pleated reinforcing textile layers distributed over their entire length on a plurality of folding zones, in which they are folded along at least three over the entire width of the inner reinforcing textiles extending folds in the form of at least two outer folds and at least one middle fold. According to the invention, the two outer folds are placed against each other so that a textile-reinforced axial web is formed, which is aligned with respect to the unfolded regions of the inner reinforcing textiles with a certain folding angle α. The textile-reinforced axial web extends from the juxtaposed outer folds to the adjacent inner reinforcing textile layer. According to the invention, there is at least one connection between the middle fold of the textile-reinforced axial web of an inner reinforcing textile layer adjacent to this adjacent inner reinforcing textile layer and an adjacent outer reinforcing textile layer. Furthermore, in this embodiment at least one connection exists between the individual outer folds and their adjacent outer reinforcement textile layer.

This results in reinforcing structures which are formed with the aid of textile-reinforced axial webs as spacer structures in which the wall thicknesses of the reinforcing structure between the axial webs in contrast to the cited prior art do not vary and are therefore uniform. For a four-layer reinforcement structure with two outer stretched reinforcing textiles and at least two inner pleated reinforcing textiles disposed between these outer elongate reinforcing textiles, the wall thickness would be uniformly two ply thicknesses formed of an outer reinforcing fabric layer and an inner reinforcing textile layer.

Textile spacer structures of this type are used wherever components have to be lightweight yet stable and, in particular, must accommodate deformation such as in a crash. The use of these components is thus conceivable primarily as a front module in vehicles such as cars, trains, aircraft and ships.

Depending on the intended use, the textile reinforcing structure can either be permanently flat, curved or otherwise shaped. That is, the stretched reinforcing textiles and the unfolded regions of the inner pleated reinforcing textiles need not be exclusively planar, but have at least partially non-planar, such as arcuate portions.

Further details and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the accompanying drawings. Show it:

1 : a "spacer preform" with rectangular chambers,

2 : a pattern sheet for rectangular chambers,

3 : a "spacer preform" with trapezoidal chambers,

4 : a pattern sheet for trapezoidal chambers,

5 : a simply curved "spacer preform" with axial webs and

6 : the front view of a simply curved "spacer preform" of equal wall thickness with axial webs.

The schematic structure of a "spacer preform" with five rectangular folding chambers shows 1 , The textile reinforcing structure contains according to 1 two outer-plane elongated reinforcing textile sheets A and D and two inner folded reinforcing textile sheets B and C disposed between these outer elongated reinforcing textile sheets joined together. According to 1 The inner pleated reinforcing textiles B and C each have three fold zones (six in total) at regular intervals, in which they are folded. Each folding zone comprises a total of three folds 20 . 21 . 22 in the form of two outer ones 20 . 22 and a middle fold 21 , the two walls equally sized with thirty millimeters in length and the width of the reinforcement textile layer 23 . 24 on both sides of the middle fold 21 limit. Here are the two outer folds 20 . 22 so juxtaposed that the two equally sized walls 23 . 24 from the folded outer folds 20 . 22 to the middle fold 21 a double-walled textile-reinforced axial web 25 form. This double-walled textile-reinforced axial web 25 is aligned with a certain folding angle α with respect to the unfolded portions of the inner reinforcing textile sheets B, C. In this case, the double-walled textile-reinforced axial web extends 25 from the outer folds 20 . 22 to the respective adjacent inner reinforcing textile layer C, B, from the middle fold 21 will be contacted. In the reinforcing textile form cavities in this way 26 in the form of chambers 26 on the one hand from two opposite unfolded areas 27 the internal reinforcement textiles B, C and on the other hand of two opposing textile-reinforced axial webs 25 be limited. The folding angle α decides which geometry has the cavity created by the folding. The folding angle α is according to 1 ninety degrees. This has a rectangular shape of the chamber 26 result. The distance between two opposite textile-reinforced axial webs 25 is the chamber width. This chamber width is in the rectangular-shaped chambers 26 forty-five millimeters. The height of the chambers 26 is on the other hand thirty millimeters. According to the embodiment in 1 each seams exist 2 . 8th . 14 between the middle folds 21 the textile-reinforced axial webs 25 the inner reinforcing textile layer B, the adjacent inner reinforcing textile layer C, and the outer reinforcing textile fabric layer D adjacent to the reinforcing textile layer C, respectively 5 . 11 . 17 between the middle folds 21 the textile-reinforced axial webs 25 the inner reinforcing textile layer C, the adjacent inner reinforcing textile layer B, and the outer reinforcing textile fabric layer A adjacent to the reinforcing textile layer B. Further, there are seam joints 1 and 3 . 7 and 9 such as 13 and 15 between the individual outer folds 20 and 22 reinforcing textile layer B and its adjacent outer reinforcing textile layer A. Analogously, there are also seam connections 4 and 6 . 10 and 12 such as 16 and 18 between the individual outer folds 20 and 22 reinforcing textile layer C and its adjacent outer reinforcing textile layer D. The compounds 1 to 18 are in this embodiment in the form of double stitches 1 to 18 educated. For clarity, is in 1 not shown that in each folding zone 19 in each case the two seams at the outer folds 20 and 22 in the same place, ie are superimposed. This concerns the seams 1 and 3 . 4 and 6 . 7 and 9 . 10 and 12 . 13 and 15 such as 16 and 18 , The textile-reinforced axial webs 25 , which are formed from the inner reinforcing textile layer B and the textile axial webs 25 formed from the inner reinforcing textile layer C are according to 1 arranged over the entire length of the reinforcing structure at regular intervals of forty five millimeters in alternating order. The chambers formed in this way 26 are each of two textile-reinforced axial webs 25 limited, wherein a textile-reinforced axial web 25 of the one inner reinforcing textile layer B and the other textile-reinforced axial web of the other inner reinforcing textile layer C is formed.

1 shows at the same time the arrangement of the inner reinforcing textile layers B and C during the folding process during the manufacturing process, while A and D remain smooth, whereby the actual folding angle α and consequently the concrete seam shape decide which geometry of the cavity created by the folding 26 Has. The pattern sheet before folding with extended reinforcement textiles B and C for the production of in 1 shows five chambers and the dimensions of the individual reinforcement textiles and the position of the seams 2 , Here A-D represent the reinforcement textiles and 1 to 18 the seams are in the form of double-stitched seams. For a pitch structure of the width of nine hundred millimeters and a chamber width of forty-five millimeters, 57 seams are required. The production of the textile spacer structure starts from the left, with the first seam 1 is formed on the reinforcing textile layers A and B and connects them to each other, and ends in the concrete case at seam 57 (in 2 The presentation is only enough to seam 18 ). The chamber formation was carried out by folding the reinforcement textiles B and C, wherein in each case the unfolded unfolded stretched reinforcement textile layer, ie either A or D, is folded away during the corresponding sewing process. As in 2 are shown, of the seams that connect the reinforcing textiles A and B, respectively, the seams 1 and 3 . 7 and 9 such as 13 and 15 after the folding process, in which the two thirty-millimeter-long walls are the same size 23 . 24 each to a double-walled textile-reinforced axial web (see. 1 ) are folded in the same place. Similarly, the seams connecting the reinforcing textiles C and D also become seams 4 and 6 . 10 and 12 such as 16 and 18 put in the same place. As already mentioned, are in 1 all of these seam pairs are shown in side-by-side arrangement only for the sake of clarity. The seams placed in the same place each connect the juxtaposed outer folds 20 . 22 (please refer 1 ) with the respective adjacent outer reinforcing textile layers A and D. The seams 5 . 11 and 17 serve to connect the reinforcement textiles A, B with C, while the seams 2 . 8th and 14 serve the compound of the reinforcement textiles D, C and B.

The 3 shows a "spacer preform", which also has two outer elongated reinforcing textile layers A and D and two inner folded reinforcing textile layers B and C arranged between these outer elongated reinforcing textile layers, which are provided by seams 1 to 18 connected to each other. As the 3 shows, the value for the folding angle α is not equal to ninety degrees, which here is the formation of five trapezoidal chambers 28 entails.

The 4 shows the corresponding pattern sheet before folding with extended reinforcement textiles B and C for the production of in 3 shown five trapezoidal chambers 28 as well as the dimensions of the individual reinforcing textile layers A, B, C, D and the position of the seams 1 to 18 ,

In 5 is a simply curved "spacer preform" with axial webs in perspective view shown. The stretched outer reinforcing textiles A, D and the unfolded areas 27 the internal reinforcing textiles B, C are not flat, but arcuately formed here. A front view of such a simply curved "spacer preform" of equal wall thickness with axial webs 25 shows 6 ,

LIST OF REFERENCE NUMBERS

1 to 18

Connections, seams, seam lines

19

folding zones

20

outer fold

21

middle fold

22

outer fold

23

wall

24

Wall (same dimensions as wall 23 )

25

Textile-reinforced axial webs, axial webs

26

Cavity, chamber

27

unfolded area of an internal reinforcing textile layer

28

trapezoidal chambers folding angle

A

outer reinforcing textile layer A, layer A

B

inner reinforcing textile layer B, layer B

C

internal reinforcing textile layer C, layer C

D

outer reinforcing textile layer D, layer D

Claims (13)

Process for the production of textile reinforcing structures, wherein at least two outer elongate reinforcing textile layers (A, D) and at least two inner pleated reinforcing textile layers (B, C) arranged between said outer elongate reinforcing textile layers, the inner pleated reinforcing textile layers (B, C) being distributed over their entire length, a plurality of pleat zones (B, C) 19 ) in which they run along at least three folds extending over the entire width of the inner reinforcing textiles (B, C) ( 20 . 21 . 22 ) in the form of at least two outer folds ( 20 . 22 ) and at least one middle fold ( 21 ), wherein the at least two outer folds ( 20 . 22 ) with formation of a textile-reinforced axial web ( 25 ) which, in relation to the unfolded regions ( 27 ) of the inner reinforcing textile layers (B, C) is aligned with a specific folding angle (α), and is guided by the outer folds ( 20 . 22 ) extends to the adjacent inner reinforcing textile layer (C, B), characterized in that the method is carried out according to the principle of the seam-like processing of the structure, comprising the following method steps: a) specifying the shape of the textile reinforcing structure, b) calculating the pattern sheet of the sewing plan according to well-known methods of fabrication technique for each layer extra, c) placing the individual reinforcement textile layers (A, B, C, D) on one another, d) fixing the points for fixing the reinforcement textile layers (A, B, C, D) as a whole, e) Fixing the superimposed reinforcing textile layers (A, B, C, D) by means of fixing elements, f) sewing the first seam ( 1 ) according to the calculated sewing plan, g) pulling out the fixing elements and thus loosening the reinforcement textile layers (A, B, C, D), h) folding new reinforcing textile layers (B, C), i) proceeding accordingly from step d) and that way long until the last seam is completed, whereby per fold zone ( 19 ) at least one compound ( 2 . 4 . 6 . 8th . 10 . 12 . 14 . 16 . 18 ) between the middle fold ( 21 ) of the textile-reinforced axial web ( 25 ), the adjacent inner reinforcing textile layer (C, B) and an outer reinforcing textile layer (D, A) adjacent to said inner reinforcing textile layer (C, B) and at least one compound ( 1 . 3 . 5 . 7 . 9 . 11 . 13 . 15 . 17 ) between the individual outer folds ( 20 . 22 ) and its adjacent outer reinforcing textile layer (A, D). A method according to claim 1, characterized in that three over the entire width of the inner reinforcing textiles (B, C) extending folds ( 20 . 21 . 22 ) in the form of two outer folds ( 20 . 22 ) and a middle fold ( 21 ) and two equally dimensioned walls ( 23 . 24 ) on both sides of the middle fold ( 21 ), wherein the textile-reinforced axial web ( 25 ) as a double wall ( 25 ) in the form of the two adjoining equally dimensioned walls ( 23 . 24 ) is formed and the textile-reinforced axial web ( 25 ) with the middle fold ( 21 ) contacts the adjacent inner reinforcing textile layer (C, B). Method according to claim 1 or 2, characterized in that the compounds ( 1 to 18 ) in the form of double stitched seams ( 1 to 18 ) be formed. Method according to claim 1 or 2, characterized in that the compounds ( 1 to 18 ) are formed as adhesive or welded joints. Method according to one of claims 1 to 4, characterized in that cavities ( 26 ) are formed, on the one hand by two opposite unfolded areas ( 27 ) of the inner reinforcing textile layers (B, C) and on the other hand of two opposite axial webs ( 25 ) and the cavities ( 26 ) depending on the folding angle (α) rectangular, trapezoidal or triangular-shaped chambers ( 26 ) are. Method according to one of claims 1 to 5, characterized in that axial webs ( 25 ) are formed by both adjacent inner reinforcing textiles (B, C). A method according to claim 6, characterized in that the textile-reinforced axial webs ( 25 ) of two adjacent inner reinforcing textiles (C, B) are arranged in alternating sequence between the inner adjacent reinforcing textiles (B, C) so that a chamber ( 26 ) each of two textile-reinforced axial webs ( 25 ), wherein a textile-reinforced axial web ( 25 ) of the one inner reinforcing textile layer (B) and the other textile-reinforced axial web (FIG. 25 ) is formed from the other internal reinforcing textile layer (C). Method according to one of claims 1 to 7, characterized in that in step c) a number of reinforcing textiles (A, B, C, D) which is divisible by four, is stacked, wherein the layers (A, B, C, D) can again consist of individual layers. Method according to one of claims 1 to 8, characterized in that in step c) four layers (A, B, C, D) are superimposed. Method according to one of claims 1 to 9, characterized in that a chamber formation by folding the middle layers (B, C) takes place, wherein the respectively not required outer reinforcing textile layer (A or D) is folded away during the corresponding sewing operation and the folding angle (α) decides which geometry is formed by the folding chamber ( 26 . 28 ) Has. Method according to claim 10, characterized in that the chambers ( 26 . 28 ) have a rectangular, trapezoidal or triangular shape. A textile spacer structure obtained by a method according to any one of claims 1 to 11. Textile spacer structure according to claim 12, characterized in that it is permanently flat, curved or otherwise shaped depending on the purpose.

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