Textile web and use

Abstract

Textile web (1) comprising a carrier (2) with at least two multiaxial layers (5, 6) extending in a longitudinal direction (L) and in a transverse direction (Q) extending perpendicular to the longitudinal direction (L), wherein the multiaxial layers (5, 6) are at least partially composed of several adjacent sub-webs (7) when viewed in the transverse direction (Q), wherein the sub-webs (7) comprise longitudinal threads (8, 9, 18, 20) extending in a sub-web longitudinal direction (TL) and transverse threads (10, 16, 17, 21-24) extending perpendicular to this in a sub-web transverse direction (TQ), wherein for at least one multiaxial layer (5, 6), marking multiaxial layer, a portion of its longitudinal threads, marking longitudinal threads (8), has a greater thickness than other longitudinal threads, in particular those adjacent to the marking longitudinal threads (8), which are thinner longitudinal threads (9), and / or that some of their transverse threads, marker transverse threads (16, 21, 23), have a greater thickness than others, the marker transverse threads (16, 21,23) especially adjacent transverse threads, thinner transverse threads (17, 22, 24).,

Description

[0001] The invention relates to a textile web, in particular a marking felt, comprising a carrier with at least two multiaxial layers which extend in a longitudinal direction and in a transverse direction running transversely to the longitudinal direction, wherein the multiaxial layers are at least partially composed of a plurality of adjoining partial webs, viewed in the transverse direction, wherein the partial webs comprise longitudinal threads extending in a partial web longitudinal direction and transverse threads extending transversely thereto in a partial web transverse direction, and the longitudinal threads of the partial webs of the respective multiaxial layer enclose an angle with the longitudinal direction of the respective multiaxial layer and the transverse threads of the partial webs of the respective multiaxial layer enclose an angle with that of the respective multiaxial layer. Furthermore, the invention relates to the use of a textile web.

[0002] DE 20 2006 019 681 U1 discloses a textile web that serves as the basis for paper machine clothing. The textile web comprises longitudinal threads and transverse threads extending transversely thereto. Viewed in the transverse direction, it is at least partially composed of several adjacent partial webs that have straight web edges that are connected to one another. The partial webs extend essentially in the longitudinal direction of the textile web and are formed by one or more partial web strips being progressively wound in the longitudinal direction of the textile web and in a helical manner transversely thereto, in other words, in particular in a helical manner. The partial webs have projecting transverse thread sections at their web edges, and a filling thread extends along each of these edges. The partial webs are sewn together using sewing threads in such a way that the filling thread(s) are enclosed on both sides by the sewing thread(s).

[0003] Another textile web of a similar type is previously known from EP 0 947 623 A1. Its structure is essentially identical to the textile web from DE 20 2006 019 681 U1. However, in this case, the adjacent partial webs are not sewn together, but rather welded together in an overlapping area by welding a connecting thread.

[0004] In pulp production, marking felts are used to structure the surface of the pulp layers. This increases the surface area, improves drying, and prevents slippage of the layers when stacking sheets, thanks to a non-slip surface with higher static friction. Pulp machines operate on a similar principle to paper machines.

[0005] Fiber cement boards are typically manufactured on so-called Hatschek machines (similar to those used in cardboard production) with screen cylinders. Using the Hatschek principle, several fiber cement layers are subsequently built up onto a felt sheet via these cylinder screens, depending on the number of layers. This multi-layer fiber cement sheet is then wound onto a forming roller in several layers, one layer being added with each rotation of the forming roller. Once the required number of layers or total thickness of the fiber cement winding is reached, it is separated from the forming roller in its final form, laid down, and then pressed flat into a flat sheet. In a subsequent process, the flat sheets can be mechanically formed and pressed into corrugated sheets, or special hand-molded parts can be formed by hand.

[0006] To prevent the individual fiber cement web layers of these products from delaminating, their felt-side layer(s) are given a surface texture by embossing with a marking felt before the corresponding fiber cement web is wound onto the forming roll. This texture anchors the web layers during pressing and thus improves layer adhesion. The Hatschek process is described, for example, in WO 2017 / 001230 A2.

[0007] DE 1 948 217 A1 discloses machine felts for the paper, cellulose, and asbestos-cement industries. These felts are provided with a base fabric whose longitudinally oriented yarns in the working position consist of spun threads of wool and / or staple fibers or multiple fibers, so-called multifilaments, and on one or both sides of which padding is needled. To reduce shrinkage of the felt across the width and simultaneously maintain the openness of the machine felt, the transversely oriented yarns of the base fabric in the working position consist entirely or partially of individual plastic fibers, so-called monofilaments, with a thickness of 0.2 mm to 0.6 mm. It is disclosed that virtually complete freedom from marking can be achieved using these machine felts.

[0008] EP 2 729 608 A1 discloses a felt for producing fiber cement articles and associated processes. The felt comprises a carrier fabric layer (flat fabric / round fabric) and a fiber fleece.

[0009] WO 03 / 069056 A1 discloses a woven fabric screen for dewatering machines. This screen comprises absorbent, compressible yarns with a larger cross-section and regular MD spacing.

[0010] DE 20 2022 101 383 U1 discloses a conveyor belt with a multiaxial carrier.

[0011] US 2003 / 0183358 A1 discloses a textile web of the type mentioned above.

[0012] A particular disadvantage of fiber cement felts, which are based on conventionally woven coarse backing fabrics with comparatively thick monofilament yarns, is that conventionally woven backings are limited in terms of their dimensions due to the maximum weaving machine width. In particular, circular fabrics can experience bottlenecks regarding the fabric or felt length (fabric weft in the machine or longitudinal direction of pulp dewatering / fiber cement machines), and flat fabrics regarding the fabric or felt width (fabric weft in the transverse direction of pulp dewatering / fiber cement machines).

[0013] There is a need to overcome these dimensional limitations. Furthermore, there is a need for textile sheets that can be used to apply particularly suitable markings to fiber cement corrugated sheets or cellulose panels, which can be manufactured with moderate effort and are characterized by high stability and a long service life.

[0014] It is an object of the present invention to provide a textile web which offers these advantages.

[0015] This object is achieved in a textile web of the type mentioned at the outset by the features of claim 1.

[0016] The invention also relates to the use of a textile web according to the invention as a marking felt, in particular in the context of the production of fiber cement boards, preferably fiber cement corrugated boards, or for pulp dewatering.

[0017] The fact that the longitudinal threads of the partial webs of the respective multiaxial layer of the carrier of the textile web according to the invention enclose an angle with the longitudinal direction of the respective multiaxial layer and the transverse threads of the partial webs of the respective multiaxial layer enclose an angle with the transverse direction of the respective multiaxial layer means that the respective angle is not zero; in other words, the longitudinal threads or transverse threads are not oriented parallel to the longitudinal or transverse direction of the (respective) layer, but are inclined or tilted relative to them. In addition to the longitudinal axis of the or the respective layer, there is therefore also a different longitudinal thread axis. The same applies to the layer transverse direction and the transverse threads. Since more than the usual two main layer axes (longitudinal and transverse) exist, they are also referred to as multiaxial layers.

[0018] In other words, the invention is based on the finding that optimal marking of fiber cement boards and also cellulose boards can be achieved by means of multiaxial layers if the multiaxial layers are specifically provided with marking threads whose thickness exceeds the thickness of other, in particular adjacent threads of the layer.

[0019] In the transverse direction, particularly in the transverse direction of the web, longitudinal marking threads with a greater thickness alternate with thinner longitudinal threads with a lesser thickness. Alternatively or additionally, in the longitudinal direction, particularly in the longitudinal direction of the web, transverse marking threads with a greater thickness alternate with thinner transverse threads with a lesser thickness. In the area of ​​one marking thread or in the area of ​​several consecutive marking threads, the (respective) multi-axial layer is characterized by a greater thickness compared to areas in which a thinner thread or several superimposed thinner threads are located. The thickness of the respective multi-axial layer(s) is therefore not constant across its entire extent, but varies due to the different thread dimensions.

[0020] The textile web according to the invention enables the creation of very distinct and clear marking imprints in fiber cement corrugated sheets or cellulose panels through the use of marking threads, which has proven particularly suitable. Since the textile web according to the invention uses one or more multiaxial layers for marking, the markings resulting in the fiber cement corrugated sheet or cellulose panel are not aligned parallel to the longitudinal and transverse directions of the textile web—and the resulting product—but are characterized by a diagonal pattern, which has proven particularly advantageous.

[0021] The markings obtainable using textile webs according to the invention in fiber cement boards can serve, for example, to ensure layer adhesion during the formation of corrugations to obtain fiber cement corrugated boards or the formation of special geometries to obtain hand-molded parts. The markings obtainable using textile webs according to the invention in pulps, in particular pulp layers, can serve, for example, to provide an enlarged surface for better drying and, on the other hand, to prevent slipping of the layers when stacking boards due to a non-slip surface with higher static friction. Pulp machines operate according to a similar principle to paper machines.

[0022] The helical pattern of transverse and / or longitudinal marking threads across the working width can create a unique embossed effect for the surface structuring of fiber cement and pulp products. Diagonally oriented marking in the direction of the longitudinal threads or the transverse threads, or in both directions, is possible. The combination of MD marking threads (longitudinal direction) and CD marking threads (transverse direction) can enhance the embossing.

[0023] The inventive use of multiaxial layers offers the further major advantage that the dimensional limitations of conventionally manufactured textile webs, in particular flat and / or circular woven felt backings, can be easily overcome. Multiaxial layers are obtained by progressively winding one or more partial web strips in the longitudinal direction of the textile web and helically transversely thereto. In other words, from a partial web strip of a given, in particular comparatively small, width, a textile web can be obtained through helical winding, the width of which exceeds that of the partial web strip by several times. The final width, depending on the fiber cement or pulp machine, can be achieved very flexibly, in particular by adjusting the width of the partial web strip and the number of windings.This makes it possible to overcome bottlenecks in the maximum felt dimensions that can be produced, particularly due to specific weaving machine widths. It also makes it possible to provide stock in the form of partial textile webs, regardless of the required final dimensions of the marking felts, which can be divided and finished according to customer-specific dimensions at short notice after receipt of the order.

[0024] Purely as an example of widths of partial track strips, those in the range of 50 to 150 cm, for example 102 cm, are mentioned.

[0025] For example, stock rolls up to several hundred meters long can be produced. These webs can then be flexibly manufactured to any backing size within the minimum / maximum range. For conventional, circularly woven endless backings, the warp required for the intended length must be available.

[0026] The textile web according to the invention can furthermore be characterized by a comparatively open structure, in particular a support structure, which significantly simplifies the cleaning of the textile web.

[0027] Finally, it has been shown that multiaxial layers can be used to produce a particularly stable support – even in a relatively open configuration – resulting in a particularly long service life and durability of the textile web according to the invention. Furthermore, the textile web according to the invention can be manufactured with comparatively little effort.

[0028] Marking threads can be either longitudinal threads or transverse threads or also longitudinal and transverse threads of the or at least one of the multiaxial layers.

[0029] If the textile web has longitudinal marking threads, a preferred embodiment is characterized in that for at least some, preferably all, longitudinal marking threads, the ratio of their thickness to the thickness of, in particular, adjacent thinner longitudinal threads is in the range of 1.5:1 to 6:1. Alternatively or additionally, the thickness of the longitudinal marking threads may exceed the thickness of, in particular, adjacent thinner longitudinal threads by at least 0.1 mm.

[0030] If the textile web alternatively or additionally comprises marker transverse threads, in an advantageous further development, at least for some, preferably all, of the marker transverse threads, the ratio of their thickness to the thickness of, in particular, adjacent thinner transverse threads is in the range of 1.5:1 to 6:1. Alternatively or additionally, the thickness of the marker transverse threads may exceed the thickness of, in particular, adjacent thinner longitudinal threads by at least 0.1 mm.

[0031] It has also proven particularly suitable if, for at least some of the longitudinal marking threads, their thickness is in the range from 0.3 mm to 1.2 mm, preferably 0.4 mm to 0.8 mm, particularly preferably 0.4 mm to 0.6 mm.

[0032] At least for some thinner longitudinal threads, it is further preferred that their thickness is in the range from 0.2 mm to 0.9 mm, preferably 0.3 mm to 0.6 mm, particularly preferably 0.3 mm to 0.4 mm.

[0033] Furthermore, at least for some of the marking cross threads, their thickness may be in the range of 0.3 mm to 1.2 mm, preferably 0.4 mm to 0.8 mm, particularly preferably 0.4 mm to 0.6 mm.

[0034] Alternatively or additionally, at least for some thinner transverse threads, their thickness may be in the range from 0.2 mm to 0.9 mm, preferably 0.3 mm to 0.6 mm, particularly preferably 0.3 mm to 0.4 mm.

[0035] The thickness of the longitudinal marking threads and / or transverse marking threads is particularly preferably greater than or equal to 0.5 mm.

[0036] Marking threads and thinner threads can, in principle, alternate in various—particularly regular—ways. For example, for the multiaxial marking layer, or at least one multiaxial marking layer, exactly one longitudinal marking thread and exactly one thinner longitudinal thread alternate in the transverse direction. In other words, there is a 1:1 alternation.

[0037] Of course, it is also possible for exactly one longitudinal marker thread to alternate with several adjacent, thinner longitudinal threads in the transverse direction. This represents a 1:n alternation (with n thinner threads). Purely as an example, a 1:2, 1:3, 1:4, or even 1:5 alternation for the longitudinal threads is possible. The several adjacent, thinner threads are then preferably characterized by the same thickness.

[0038] In an analogous manner, it can be provided that exactly one marker cross thread and exactly one thinner cross thread alternate, in other words, with regard to the cross threads, there is a weft change of 1:1 from marker to thinner threads.

[0039] It is also possible to alternate exactly one marker cross thread with several adjacent thinner cross threads, thus creating a 1:n cross thread alternation. Examples of this include a 1:2, 1:3, 1:4, or even 1:5 weft alternation for the cross threads. The several adjacent thinner threads are then preferably characterized by the same thickness.

[0040] Finally, it is also not excluded that several adjacent marker threads alternate with a thinner thread, in other words an n:1 alternation occurs, whereby this can apply to both the longitudinal and the transverse threads.

[0041] Alternating several marker threads with several thinner threads is also possible, i.e., an n:n alternation, whereby this can also apply to both the longitudinal and transverse threads. The several adjacent marker threads are then preferably characterized by the same thickness and / or the several adjacent thinner threads.

[0042] Regarding the cross-sectional shape of the threads, the following has proven to be effective: At least some of the longitudinal threads and / or at least some of the transverse threads can have a round cross-section, for example. This can also apply to all longitudinal threads and / or all transverse threads of the textile web.

[0043] In particular, the marking and / or thinner longitudinal threads and / or the marking and / or thinner transverse threads may have a round cross-section, although this may then apply only to some or all of these thread types.

[0044] In the case of round thread cross-sections, the thickness corresponds to the diameter of the threads.

[0045] An example of a multiaxial marking layer comprises exclusively threads with a round cross-section and marking threads only in the longitudinal direction. For example, longitudinal threads of (at least) two different diameters can be provided, specifically, longitudinal marking threads of a larger diameter and thinner longitudinal threads of a smaller diameter, which alternate, for example, in a 1:1 ratio or another alternation, while all transverse threads have the same diameter. This configuration enables particularly suitable marking. The diameter of the equally thick transverse threads can then be, for example, 0.35 mm, 0.4 mm, or even 0.5 mm.

[0046] Alternatively or in addition to the textile web according to the invention having threads with a round cross-section, flat threads may also be present.

[0047] Accordingly, at least some longitudinal threads may be formed as flat threads, and / or at least some transverse threads may be formed as flat threads. For example, at least some longitudinal marking threads may be formed as flat threads, and / or at least some thinner longitudinal threads, and / or at least some transverse marking threads, and / or at least some thinner transverse threads.

[0048] Round and / or flat threads can be present in only one or several or all multiaxial layers of the textile web according to the invention.

[0049] Flat threads can, for example, have an at least essentially rectangular or even oval cross-section. Flat threads are wider than they are thick when viewed in cross-section. In the case of a rectangular cross-section, for example, the thickness corresponds to the length of the shorter side of the rectangle.

[0050] Another particularly suitable combination has proven to be, for example, if the or at least one marking multiaxial layer has marking longitudinal threads with a round cross-section and thinner longitudinal threads designed as flat threads.

[0051] The or at least one marking multiaxial layer can also have marking longitudinal threads designed as flat threads and thinner longitudinal threads with a round cross-section.

[0052] The or at least one marking multiaxial layer may further comprise marking transverse threads with a round cross-section and thinner transverse threads formed as flat threads.

[0053] Alternatively or additionally, it is possible for the or at least one marking multiaxial layer to have marking transverse threads formed as flat threads and thinner transverse threads with a round cross-section.

[0054] Another example of a particularly suitable multiaxial marking layer comprises longitudinal threads with a round cross-section, all characterized by the same diameter, and transverse threads with two different cross-sectional shapes of different dimensions, specifically flat transverse threads and round transverse threads of different thicknesses. For example, thicker transverse threads with a circular cross-section, which then form the marking transverse threads, can alternate with thinner flat transverse threads, which form the thinner transverse threads, for example, in a weft sequence of 1:1 or 1:2, i.e., one marker thread followed by one or two thinner threads, etc. This configuration of the multiaxial marking layer(s) also ensures particularly suitable marking.

[0055] Another example of a preferred embodiment of a marker multiaxial layer comprises longitudinal threads with a round cross-section, all characterized by the same diameter, and transverse threads with a circular cross-section of two different diameters, as well as transverse threads with a rectangular cross-section, in particular flat threads, of two different thicknesses, which alternate, for example, in a 1:1 weft sequence or a different weft sequence. In other words, there are both marker transverse threads with a round and rectangular cross-section, and both thinner transverse threads with a round and rectangular cross-section. In particular, it can be a weave of the weft-cross-body 2-2 type developed by dividing the weft repeat (cf. also DIN 61101, in particular the version of this DIN valid at the time of application or priority).

[0056] In a further development, it can further be provided that at least some, preferably all, longitudinal threads and / or at least some, preferably all, transverse threads are provided by monofilaments and / or in particular multi-stage threads, in particular made of monofilaments.

[0057] The individual monofilaments of multi-stage yarns, in particular, can be characterized by a thickness in the range of 0.2 to 0.4 mm. Examples of yarn configurations include 0.2 mm x 6 (multi-stage, in particular: 0.2 mm x 2 x 3) or 0.2 mm x 12 (multi-stage, in particular: 0.2 mm x 3 x 4) or 0.2 mm x 16 or 0.2 mm x 20 or 0.3 mm x 9.

[0058] A particularly preferred embodiment is characterized in that the or at least one, preferably all, multiaxial layers comprise or consist exclusively of monofilaments. In other words, this results in a purely monofilament configuration of the multiaxial support structure, which has proven particularly suitable.

[0059] It can also be provided that the or at least one multiaxial layer is formed from the longitudinal and transverse threads, in other words, has no further components besides the longitudinal and transverse threads.

[0060] Another embodiment is characterized by the fact that the partial webs of the respective multiaxial layer(s) are formed as woven or knitted fabrics or scrims (longitudinal and / or transverse). This creates a comparatively open structure, which, in particular, enables particularly good cleaning. Woven multiaxial layers have proven particularly suitable for this purpose. In all three cases, the multiaxial layers preferably have the most open structures possible.

[0061] The textile web according to the invention or at least parts thereof, e.g., one or more multiaxial layers, can be further felted, such as fulled or needled.

[0062] With regard to the thickness of the multiaxial layers, it has proven to be advantageous, for example, if it is in the range of 0.5 mm to 2.0 mm, preferably 0.8 mm to 1.6 mm, particularly preferably 1.0 mm to 1.3 mm.

[0063] In addition to the carrier with the multiaxial layers, the textile web according to the invention advantageously comprises one or more nonwoven layers. If one or more nonwoven layers are present, it is preferred that the nonwoven layer or layers be bonded, preferably needle-bonded, to the carrier and to one another.

[0064] A nonwoven layer can, in particular, form a cover layer, in other words, an uppermost (or, in the case of a bottom cover layer, the lowest) layer of the textile web according to the invention. It has proven particularly suitable if the textile web according to the invention has two nonwoven layers, each of which forms a cover layer, in other words, is closed off on both sides (product side (PS) and machine side (MS)) by a nonwoven layer.

[0065] If one or more nonwoven layers are present, these can be characterized by a basis weight in the range from 100 g / m 2< to 1000 g / m 2< , in particular 100 g / m 2< to 400 g / m 2< or 150 g / m 2< to 600 g / m 2< , preferably 150 g / m 2< to 400 g / m 2< , particularly preferably 150 to 200 g / m 2<.

[0066] With regard to a machine-side (cover) nonwoven layer, it is preferred that its basis weight is in the range of 100 g / m 2< to 400 g / m 2< , in particular 150 g / m 2< to 200 g / m 2<.

[0067] A product-side (cover) nonwoven layer preferably has a basis weight in the range from 100 g / m 2< to 1000 g / m 2< , in particular 150 g / m 2< to 600 g / m 2< , preferably 150 g / m 2< to 400 g / m 2<.

[0068] The or at least one nonwoven layer can further preferably be characterized by a fiber fineness in the range from 6.7 dtex to 100 dtex, in particular 22 dtex to 100 dtex, preferably 44 dtex to 67 dtex.

[0069] In general, a nonwoven (cover) layer should be as thin or light as possible to allow the marking threads of one or more multiaxial marking layers, particularly those underneath, to develop their full effect. For example, a thickness in the range of 0.1 mm to 2.0 mm, preferably 0.3 mm to 1.0 mm, has proven effective.

[0070] In a further advantageous embodiment, at least one, preferably all, multiaxial layers are obtained by helically winding at least one base partial web, the width of which is less than the width of the textile web and the length of which is greater than the length of the textile web. The (respective) base partial web is formed, in particular, by a comparatively long partial web strip, which is then wound in a correspondingly helical manner, progressively in the width direction, to obtain a multiaxial layer.

[0071] Advantageously, the longitudinal threads of the partial webs of a multiaxial layer extend at least substantially parallel to one another and / or the transverse threads of the partial webs of a multiaxial layer extend at least substantially parallel to one another.

[0072] In the present case, at least substantially parallel means in particular that there is a deviation of a maximum of 15°, in particular a maximum of 10°, preferably a maximum of 5°.

[0073] The partial webs can have straight longitudinal edges. It is also possible for the partial webs to be characterized by other longitudinal edge shapes or contours. For example, they can have serrated, meandering, or wavy longitudinal edges. With both straight and non-straight longitudinal edges, the partial webs can be brought into abutting contact with one another.

[0074] According to a further embodiment, adjacent partial webs are preferably connected to one another at their longitudinal edges. They can, for example, be sewn and / or glued and / or fused and / or welded together. Adjacent partial webs can be butted against one another or have overlapping areas.

[0075] Joining adjacent partial webs by sewing can be achieved, for example, as described in DE 20 2006 019 681 U1. Accordingly, adjacent web edges are butted against each other, and at least one filler thread is loosely inserted there. The partial webs are sewn together using sewing threads in such a way that the filler thread(s) are enclosed on both sides by the sewing thread(s).

[0076] Welding can be achieved, for example, by means of an ultrasonic welding device, as disclosed in EP 0 947 623 A1. The partial webs have protruding thread sections at their web edges that overlap and interlock, and at least one connecting thread is placed over the thread sections and welded to the thread sections.

[0077] As an alternative or in addition to ultrasonic welding, laser welding has proven particularly suitable for the present invention. Hot wedge welding and / or high-frequency welding are also suitable.

[0078] With regard to the two or more multiaxial layers, it is further preferred that they are connected to one another, in particular needled to one another.

[0079] A further advantageous embodiment is characterized in that the angle formed by the longitudinal threads of one multiaxial layer with the longitudinal direction of this multiaxial layer is equal in magnitude to the angle formed by the longitudinal threads of the other multiaxial layer or of another multiaxial layer with the longitudinal direction of this other multiaxial layer, preferably with the two angles being opposite. In other words, the angles between two multiaxial layers, which can also be referred to as multiaxial angles, are then equal but opposite, in other words, oriented in opposite directions. This enables a particularly even force distribution.

[0080] The angle that the longitudinal threads of the respective multiaxial layer enclose with the longitudinal direction of this multiaxial layer can also be referred to as the winding angle or multiaxial angle.

[0081] It can also apply to at least one multiaxial layer that the angle formed by the longitudinal threads of the multiaxial layer with the longitudinal direction of the multiaxial layer lies in the range of 0.6° to 10°, in particular in the range of 1.5° to 5°, preferably in the range of 1.8° to 4°. The angle setting is inversely proportional to the length of the textile web—for a defined width of the partial web. In other words, the longer the textile web is for a given width of the partial web(s), the smaller the angle to the longitudinal direction of the partial web(s). Purely exemplary suitable combinations of textile web length ranges and associated angle ranges are a textile web length of 6 mm to 100 m and an angle of 10° to 0.6°, a textile web length of 12 m to 60 m and an angle of 5° to 1.5°, a textile web length of 15 m to 45 m and an angle of 4° to 1.8°.

[0082] The width of the textile web according to the invention can vary and be selected depending on the application. For example, it can range from 1 to 12 m. The widths of the fiber cement felts are expediently adapted to the national standard formats for fiber cement boards applicable in the respective countries: Standard widths of fiber cement felts, especially widths manufactured according to DIN standards, are, for example, 1.5 m for the production of single boards and 2.6 m for the production of double boards. For pulp dewatering, the width can range, for example, from 2.5 m to 10.6 m.

[0083] A further embodiment is characterized in that the textile web comprises two superimposed marking multiaxial layers, wherein the two superimposed marking multiaxial layers are formed by an endless loop laid upon itself.

[0084] In principle, it is sufficient to achieve the marking if the textile web has a marking multi-axial layer with longitudinal marking threads and / or transverse marking threads. Alternatively, it can comprise more than one such layer. This can also arise for manufacturing reasons. For example, a carrier comprising or consisting of two marking multi-axial layers can be obtained by producing a marking multi-axial layer, e.g. as a woven or scrim or even a knitted fabric with longitudinal and transverse threads as a continuous loop and then laying it on itself to form two folds running in the transverse direction (transverse direction or CD folds). This results in two superimposed marking multi-axial layers with opposite winding angles.A seam can be provided near each fold, creating loops that can be joined to form an endless loop (half the length of the original endless loop folded over itself). In this case, the carrier is a seamed one.

[0085] It is also possible to produce or provide two multiaxial layers in the form of two endless loops, in particular with opposite winding angles, and to place them on top of each other, e.g. by inserting one endless loop from the side into the other.

[0086] A further embodiment can be characterized accordingly in that the textile web comprises two superimposed multiaxial layers, wherein the two superimposed multiaxial layers are each formed by one of two superimposed endless loops, preferably, wherein only one of the multiaxial layers is designed as a marking multiaxial layer with longitudinal marking threads and / or transverse marking threads, in particular the outer one. Further preferably, the marking multiaxial layer is located closer to a product side of the textile web, and the multiaxial layer without marking threads is located closer to a machine side of the textile web.

[0087] In the case of two continuous loops lying on top of each other, there is no CD fold and no seam in the area of ​​one or more of these, so that one can also speak of a carrier without a seam. In this case, one multiaxial continuous loop can be manufactured or used with and one without marker threads, resulting in a carrier with two multiaxial layers, of which only one layer is a marker multiaxial layer. The marker multiaxial layer is then conveniently located on or closer to the product side.

[0088] Further features and advantages of the present invention will become apparent from the following description of embodiments of textile webs according to the invention with reference to the accompanying drawings. Figure 1 shows an embodiment of a textile web according to the invention with two multiaxial layers and a product-side and a machine-side cover fleece layer in a highly simplified, schematic sectional view; Figure 2 shows a purely schematic plan view of the carrier of the textile web from Figure 1; Figure 3 shows the helical winding of a partial web strip to obtain a multiaxial layer in a purely schematic representation; Figure 4 shows a purely schematic partial representation of a first exemplary embodiment of a marking multiaxial layer in the form of thread layers, which comprises longitudinal marking threads, wherein partial webs of these are connected by means of a laser welding device; Figure 5 shows a purely schematic partial representation of a second exemplary embodiment of a marking multiaxial layer in the form of a woven fabric, which comprises transverse marking threads; Figure 6 shows a purely schematic partial representation of a third exemplary embodiment of a marking multiaxial layer in the form of a woven fabric, which comprises transverse marking threads; Figure 7 shows a partial representation of a marking imprint obtained with a textile web according to the invention; Figure 8 shows a partial representation of a marking imprint obtained with a conventional textile web;and Figure 9 shows a partial view of another marking imprint obtained with another conventional textile web. ;

[0089] In the figures, identical components or elements are provided with identical reference numerals.

[0090] The Figure 1 shows in a purely schematic sectional view an embodiment of a textile web 1 according to the invention, which is designed as a marking felt for fiber cement board production or pulp dewatering.

[0091] The marking felt 1 is multi-layered, specifically four-layered. It comprises a two-layer carrier 2 and two nonwoven layers 3, 4, of which one nonwoven layer 3 is arranged on the product side and the other nonwoven layer 4 is arranged on the machine side of the carrier 2. The carrier 2 comprises two multiaxial layers 5, 6: a product-side multiaxial layer 5 and a machine-side multiaxial layer 6. The two nonwoven layers 3, 4 are needle-punched to the carrier 2, i.e., the two multiaxial layers 5, 6.

[0092] It should be noted that in the highly simplified Figure 1 The internal structure of the four layers 3, 4, 5, 6 is not shown. This figure is intended only to illustrate the multi-layer construction. Furthermore, it should be emphasized that a textile web according to the invention, in particular a marking felt 1 according to the invention, can of course also comprise more or fewer than four layers or consist of more or fewer than four layers. For example, more or fewer nonwoven layers 3, 4 can also be present. The carrier 2 can further comprise more than two multiaxial layers and / or other layers not designed as multiaxial layers.

[0093] With regard to the multiaxial layers 5, 6 of the example shown, they extend in a longitudinal direction and in a transverse direction Q running transversely to the longitudinal direction L. The two directions L, Q can, for example, Figure 2which is a purely schematic plan view of the carrier 2 from Figure 1 , namely on its product side. Each of the two multiaxial layers 5, 6 of the carrier 2 is composed of several adjacent partial webs 7, viewed in the transverse direction. Figure 2 The partial webs 7 of the upper, product-side multiaxial layer 5 in this figure are shown with solid lines and the partial webs 7 of the machine-side multiaxial layer 6 immediately below are shown with dashed lines.

[0094] Each carrier partial web 7 comprises longitudinal threads 8, 9 extending in a partial web longitudinal direction TL and transverse threads 10 extending orthogonally thereto in a partial web transverse direction TQ. The longitudinal and transverse threads 8, 9, 10 can be shown in a purely schematic manner. Figure 4which shows, by way of example and only in sections, two adjacent partial webs 7 of a multiaxial layer 5, 6. Each partial web 7 - and also the multiaxial layer 5, 6 as such - is formed by a thread layer.

[0095] The longitudinal threads 8, 9 of the partial webs 7 of the respective multiaxial layer 5, 6 - and thus the partial web longitudinal direction TL - enclose an angle α, α' with the longitudinal direction L of the respective multiaxial layer 5, 6. Analogously, the transverse threads 10 of the partial webs 7 - and thus the partial web transverse direction TQ - of the respective multiaxial layer 5, 6 enclose an angle β, β' with the transverse direction Q of the respective multiaxial layer 5, 6.

[0096] The fact that an angle is included means that the respective angle α, α', β, β' is not zero; in other words, the longitudinal threads 8, 9 and transverse threads 10 are not oriented parallel to the longitudinal or transverse direction L, Q of the multiaxial layer 5, 6, but are inclined or tilted relative to them. In addition to the longitudinal axis L of the layers 5, 6, there is therefore a different longitudinal thread axis for each multiaxial layer 5, 6. The same applies to the layer transverse direction and the transverse threads 10. Since more than the usual two main layer axes (longitudinal and transverse) exist, one can also speak of multiaxial layers.

[0097] It should be noted that in the purely schematic Figure 2 The arrows representing the partial track transverse directions TQ are shown tilted relative to the transverse direction Q in order to clearly illustrate the deviation. These directions are actually orthogonal to the longitudinal direction TL of the respective partial tracks 7.

[0098] In the example shown, the angle α formed by the longitudinal threads 8, 9 of the product-side multiaxial layer 5 with the longitudinal direction L of this multiaxial layer 5 is equal in magnitude to the angle α' formed by the longitudinal threads 8, 9 of the other, machine-side multiaxial layer 6 with the longitudinal direction L of this other multiaxial layer 6, but, as can be seen, is opposite in direction. In the example shown, α and α' are each approximately 3°. The angles β and β' are also equal in magnitude but opposite in direction and each amount to approximately 3°. This is because the longitudinal direction L and transverse direction Q and the partial web longitudinal direction TL and partial web transverse direction TQ are orthogonal to each other, namely in both Multiaxial layers 5, 6. The angles α, α', β and β' can also be called winding angles or multiaxial angles.

[0099] Both multiaxial layers 5, 6 were obtained by helical winding of at least one base part web 11, the width of which is several times less than the width of the marking felt 1 and the length of which is several times greater than the length of the marking felt 1. This winding is shown in the Figure 3 shown purely schematically and as an example for a multiaxial layer 5, 6 and using a base part web 11. For a convenient, simple winding process, rolls 12 can be used around which the winding takes place.

[0100] For at least one of the multiaxial layers 5, 6, it further applies that a part of its longitudinal threads 8, 9, marking longitudinal threads 8, has a greater thickness than further longitudinal threads, in particular adjacent to the marking longitudinal threads 8, thinner longitudinal threads 9, and / or that a part of its transverse threads, marking transverse threads, has a greater thickness than further transverse threads, in particular adjacent to the marking transverse threads, thinner transverse threads.

[0101] In the example according to the Figures 1 and 2 The two multiaxial layers 5, 6 are structurally identical and both represent marking multiaxial layers 5, 6, which have longitudinal marking threads and / or transverse marking threads. Specifically, the two marking multiaxial layers each have longitudinal marking threads 8 and thinner longitudinal threads 9. The longitudinal marking threads 8 and thinner longitudinal threads 9 alternate here with a 1:1 ratio.

[0102] The transverse threads 10, however, all have the same thickness. It should be noted that manufacturing-related deviations between threads, such as the transverse threads 10, cannot be ruled out, even if they are said to have the same thickness in this case. However, if tolerances exist regarding the thickness of these threads 10, they must be significantly smaller than the thickness differences between marker threads and thinner threads, in particular by at least an order of magnitude. With regard to all threads, manufacturing-related tolerances can exist to a certain extent, which must be taken into account when referring to equal thicknesses in this case. Tolerances for thread diameters are typically in the range of + / - 0.01 to 0.02 mm.

[0103] How to Figure 4As can be seen, both the longitudinal marking threads 8 and the thinner longitudinal threads 9, as well as the transverse threads 10, each have a round cross-sectional shape, so that the thickness of the threads corresponds to the thread diameter. Furthermore, all threads 8, 9, 10 of the multiaxial marking layers 5, 6 of the carrier 2 of the textile web 1 are monofilaments. In other words, the carrier 2 is purely monofilament.

[0104] The diameter of the longitudinal marking threads 8 is in the embodiment according to Figure 4 The diameter of the thinner longitudinal threads 9 is 0.6 mm, and the diameter of the thinner longitudinal threads 9 is 0.3 mm. The thickness of the transverse threads is 0.4 mm. These values ​​are purely exemplary and may vary. Preferably, the thickness of the marking longitudinal threads 8 is at least 1.5 times the thickness of the thinner longitudinal threads 9.

[0105] Since the multiaxial layers comprise longitudinal threads 8, 9 of two different thicknesses, they are particularly well-suited for applying markings to fiber cement boards or cellulose panels, in the production of which the textile web 1 is used. Accordingly, this is designed as a marking felt 1.

[0106] It should be emphasized that in order to obtain markings, particularly in fiber cement boards or cellulose boards, it would in principle also be sufficient if only one of the multiaxial layers 5, 6 were designed as a marking multiaxial layer with longitudinal and / or transverse marking threads, then expediently the product-side multiaxial layer 5 facing or facing the product. Furthermore, even if in the illustrated embodiment the two multiaxial layers 5, 6 of the carrier 2 are designed identically, this does not necessarily have to be the case. For example, in deviation from the example from the Figures 1 and 2There may also be two or more differently designed multiaxial marking layers.

[0107] The thickness of the multiaxial layers 5, 6 can, for example, be in the range from 0.5 mm to 2.0 mm, in particular 0.8 mm to 1.6 mm, preferably 1.0 mm to 1.3 mm.

[0108] The fleece layers 3, 4 are expediently designed to be as thin as possible so that the marking threads 8 can optimally develop their full effect. For example, it has proven effective if their thickness is in the range of 0.1 mm to 2.0 mm, preferably 0.3 mm to 1.0 mm. The product-side fleece layer 3 has a basis weight of 300 g / m², and the machine-side fleece layer 4 has a basis weight of 180 g / m². The fiber fineness of both fleece layers 3, 4 is 44 dtex.

[0109] The adjacent partial webs 7 of the marking multiaxial layers 5, 6 have, as can be seen in Figure 2recognizes, straight longitudinal edges 13. Of course, other longitudinal edge shapes are also possible, such as toothed, meandering or wavy longitudinal edges 13. Adjacent partial webs 7 are connected to each other in the area of ​​their longitudinal edges 13. In the example according to Figure 4 It is true that the partial webs 7 have protruding thread sections 14 at their web edges, in other words the longitudinal edges 13, which overlap and interlock. At least one, here exactly one, connecting thread is laid over the overlapping thread sections 14 and welded to the thread sections 14. The connecting thread is formed here by a longitudinal marking thread 8, whereby this is to be understood as an example. In the Figure 4Also shown purely schematically is a welding device 15, which is moved over the overlapping thread sections 14 and the longitudinal marking thread 8 serving as the connecting thread, and achieves the welding. The example shown is a laser welding device 15. Alternatively, it could also be an ultrasonic welding device, for example. The type of connection shown here and its production are also described in EP 0 947 623 A1.

[0110] The Figures 5 and 6 show alternative embodiments of multiaxial marking layers. This is also purely schematic and section-wise. Alternatively, the textile web 1 can be made of Figure 1 a carrier 2 with multiaxial layers 5, 6 according to Figure 4 it can also have multiaxial layers 5, 6 as shown in the Figure 5and 6 respectively and are described below. Correspondingly designed textile webs 1 represent - in addition to the first embodiment with multiaxial layers 5, 6 according to Figure 4 - a second and third embodiment of a textile web 1 according to the invention.

[0111] In the examples from Figures 5 and 6 The partial webs 7, and thus the multiaxial layers 5, 6 composed of them, are formed as flat woven fabrics. All threads here are monofilaments, so that the multiaxial layers 5, 6 are also purely monofilament.

[0112] In the example according to Figure 5 The weft-body weave is 2-2. The pitch number is 1.

[0113] In contrast to the example from Figure 4No longitudinal marking threads and thinner longitudinal threads are provided here, but the marking threads extend in the partial web transverse direction TQ. The multiaxial layer 5, 6 shown comprises correspondingly transverse marking threads 16 (marking weft threads) of a greater thickness and thinner transverse threads 17 (standard weft threads) of a comparatively smaller thickness.

[0114] Another difference to the example from Figure 4 lies in the cross-sectional shapes of the transverse threads, specifically the thinner transverse threads 17. These are not designed as threads with a round cross-section, but as flat threads with a rectangular cross-section. Their thickness is 0.3 mm. The marking transverse threads 16 have a round cross-section and a diameter of 0.8 mm.

[0115] The 18 longitudinal threads (warp threads) have a round cross-section and all have the same diameter of 0.5 mm.

[0116] Finally, there is a difference, for example, Figure 4in the alternation from marker threads to thinner threads. As can be seen, each marker cross thread 16 (marker weft threads) is followed by two thinner flat cross threads 17 (standard weft threads). The alternation from marker threads to thinner threads is thus 1:2.

[0117] Finally, the example shows Figure 5 by a different type of connection of adjacent partial tracks 7. The partial tracks 7 are also not, as in Figure 4, welded together, but sewn together, specifically, as described in DE 20 2006 019 681 U1. There are no overlapping threads, in other words no overlapping areas, but the longitudinal edges 13 are butted against each other and a filling thread is loosely inserted there, which is formed by a longitudinal thread 18. The partial webs 7 are sewn together using a sewing thread 19 or sewing threads 19 in such a way that the filling thread provided by the longitudinal thread 8 is enclosed on both sides by the sewing thread 19 or the sewing thread 19. In the example shown, a sewing thread 19 is provided which is sewn in a zigzag stitch.

[0118] Alternatively or in addition to adjacent partial webs 7 being welded or sewn, they can also be glued, for example.

[0119] The embodiment from Figure 6differs in some aspects. Here, too, the multiaxial marking layer shown is a monofilament flat fabric with a weft-cross-body 2-2 weave developed by splitting the weft repeat.

[0120] In accordance with the example from Figure 5 Here, all longitudinal threads 20 (warp threads) have a round diameter and are characterized by the same diameter of 0.4 mm, which again is to be understood as a purely exemplary thickness.

[0121] With regard to the transverse threads 21-24 (weft threads), these are provided with two different cross-sectional shapes and two different thicknesses. Specifically, there are marking transverse threads 21, 23 with a round cross-section, in other words, round marking transverse threads 21, 23 with a larger diameter, as well as thinner transverse threads 22, 24 designed as flat threads with a rectangular cross-section, the thickness of which is less than the diameter of the round marking transverse threads 21, 23.

[0122] The diameter of the round marking cross threads 21, 23 is 0.6 mm and the thickness of the thinner cross threads 22, 24 designed as flat threads is 0.3 mm.

[0123] These values ​​are also examples and may vary.

[0124] As can be seen, a round cross-marking thread 21, 23 is followed by a thin cross-marking thread 22, 24 in the form of a flat thread, before another round cross-marking thread 21, 23 comes, and so on. In other words, there is a 1:1 weft exchange from marker threads to thinner threads.

[0125] Conversely, the marking cross threads 21, 23 can also be present as flat threads with a greater thickness and the thinner cross threads 22, 24 as round threads with a smaller diameter.

[0126] It should be noted that in the purely schematic, section-by-section Figure 6 only a section of a partial track 7 is shown and thus the type of connection between adjacent partial tracks 7 is not recognizable. The connection can, for example, be designed in the same way as in Figure 4 or Figure 5 shown, i.e., welded with an overlap or sewn butt-to-end. Alternatively or additionally, adjacent partial webs 7 can also be glued and / or fused.

[0127] The textile webs 1 according to the invention enable the creation of particularly pronounced and clear marking imprints in fiber cement panels or cellulose boards through the use of marking threads 8, 16, 21, 23, which has proven particularly suitable. Since one or more multiaxial layers 5, 6 are used for marking in the textile webs 1 according to the invention, the markings resulting in the fiber cement or cellulose are not aligned parallel to the longitudinal and transverse directions L, Q of the textile web 1, but are characterized by a diagonal pattern, which has proven particularly suitable.

[0128] The Figure 7 shows, in sections, a marking imprint of a fiber cement board which was obtained using a textile web 1 according to the invention designed as a marking felt.

[0129] As can be seen, there are clearly contoured markings in the longitudinal and transverse directions, which, due to the use of multiaxial layers 5, 6, extend through an orientation at an angle to the longitudinal and transverse directions L, Q of the textile web 1 used—and the resulting fiber cement board or cellulose panel, respectively. Embossments of predefined dimensions are obtained due to monofilaments of different diameters or thicknesses.

[0130] The use of multiaxial layers 5, 6 offers the further great advantage that the dimensional limitations of conventionally manufactured textile webs, in particular marking felts, can be easily overcome.

[0131] The textile webs 1 according to the invention can be characterized by a comparatively open structure, in particular a support structure, which significantly simplifies their cleaning.

[0132] Finally, it has been shown that particularly stable supports 2 can be obtained from multiaxial layers 5, 6 - even in a comparatively open configuration - which results in a particularly long service life and running time of textile webs 1 according to the invention.

[0133] The Figures 8 and 9 show section-by-section marking impressions of fiber cement panels that were obtained using conventional textile webs.

[0134] As you can see, only "blurry" markings without clear contours can be obtained here, which in the case of Figure 8 predominantly longitudinally and transversely and in the case of Figure 9 are predominantly longitudinally aligned, in both cases with a right-angled orientation to the longitudinal or transverse direction L, Q. This results in embossings of uneven, irregular dimensions due to a characteristically uneven surface structure of twisted threads of the same diameter.

[0135] In the example according to Figure 8 A conventional fabric carrier was used, which is a circular weave made of multifilament yarns, specifically multifilament yarns of 1,900 dtex in the longitudinal direction L and multifilament yarns of 1,000 dtex in the transverse direction Q. The fabric weave is a type of plain weave.

[0136] In the example according to Figure 9 A conventionally manufactured fabric carrier, also a circular fabric, made of monofilaments with additional cover weft thread (monofilament threads 16-ply: 0.2 mm x 4 x 4) in the longitudinal direction was used.

Claims

1. Textile web (1), in particular marking felt, comprising a carrier (2) with at least two multiaxial layers (5, 6) which extend in a longitudinal direction (L) and in a transverse direction (Q), the transverse direction (Q) extending transversely to the longitudinal direction (L), wherein the multiaxial layers (5, 6), viewed in the transverse direction (Q), are composed at least in part of several adjacent partial webs (7), wherein the partial webs (7) comprise longitudinal threads (8, 9, 18, 20) extending in a partial web longitudinal direction (TL) and transverse threads (10, 16, 17, 21-24) extending transversely thereto in a partial web transverse direction (TQ), and the longitudinal threads (8, 9, 18, 20) of the partial webs (7) of the respective multi-axial layer (5, 6) form an angle with the longitudinal direction (L) of the respective multi-axial layer (5, 6) and the transverse threads (10, 16, 17, 21-24) of the partial webs (7) of the respective multi-axial layer (5, 6) form an angle with the transverse direction (Q) of the respective multi-axial layer (5, 6), characterized in that, for at least one multi-axial layer (5, 6), as a marking multi-axial layer, it applies that some of its longitudinal threads as marking longitudinal threads have a greater thickness than other, thinner longitudinal threads (9) which in particular are adjacent to the marking longitudinal threads (8), and / or in that some of its transverse threads as marking transverse threads (16, 21, 23) have a greater thickness than other, thinner transverse threads (17, 22, 24) which in particular are adjacent to the marking transverse threads (16, 21, 23).

2. Textile web (1) according to claim 1, characterized in that for at least some, preferably all, of the marking longitudinal threads (8), the ratio of their thickness to the thickness of adjacent thinner longitudinal threads (9) is in the range of 1.5:1 to 6:1, and / or that, for at least some, preferably all, of the transverse marking threads (16, 21, 23), the ratio of their thickness to the thickness of adjacent thinner transverse threads (17, 22, 24) is in the range of 1.5:1 to 6:1.

3. Textile web (1) according to claim 1 or 2, characterized in that at least for some marking longitudinal threads (8) it applies that their thickness is in the range of 0.3 mm to 1.2 mm, preferably 0.4 mm to 0.8 mm, particularly preferably 0.4 mm to 0.6 mm, and / or that at least for some thinner longitudinal threads (9) it applies that their thickness is in the range of 0.2 mm to 0.9 mm, preferably 0.3 mm to 0.6 mm, particularly preferably 0.3 mm to 0.4 mm, and / or that at least for some marking transverse threads (16, 21, 23) it applies that their thickness is in the range of 0.3 mm to 1.2 mm, preferably 0.4 mm to 0.8 mm, particularly preferably 0.4 mm to 0.6 mm, and / or that at least some thinner transverse threads (17, 22, 24) have a thickness in the range of 0.2 mm to 0.9 mm, preferably 0.3 mm to 0.6 mm, particularly preferably 0.3 mm to 0.4 mm.

4. Textile web (1) according to one of the preceding claims, characterized in that at least some longitudinal threads (8, 9, 18, 20) have a round cross-section, preferably at least some marking longitudinal threads (8) and / or at least some thinner longitudinal threads (9) have a round cross-section, and / or in that at least some transverse threads (10, 16, 17, 21-24) have a round cross-section, preferably at least some marking transverse threads (16, 21, 23) and / or at least some thinner transverse threads (17, 22, 24) have a round cross-section.

5. Textile web according to one of the preceding claims, characterized in that at least some longitudinal threads (8, 9, 18, 20) are embodied as flat threads , preferably wherein at least some marking longitudinal threads (8) are embodied as flat threads, and / or that at least some transverse threads (10, 16, 17, 21-24) are embodied as flat threads, preferably wherein at least some marking transverse threads (16, 21, 23) are embodied as flat threads, and / or that at least some thinner transverse threads (17, 22, 24) are embodied as flat threads.

6. Textile web (1) according to claims 4 and 5, characterized in that the or at least one marking multi-axial layer (5, 6) comprises marking longitudinal threads (8) with a round cross-section and thinner longitudinal threads (9) embodied as flat threads, and / or in that the or at least one marking multi-axial layer (5, 6) comprises marking longitudinal threads (8) embodied as flat threads and thinner longitudinal threads (9) with a round cross-section, and / or in that the or at least one marking multi-axial layer (5, 6) comprises marking transverse threads (16, 21, 23) with a round cross-section and thinner transverse threads (17, 22, 24) embodied as flat threads, and / or in that the marking multi-axial layer (5, 6) comprises marking transverse threads (16, 21, 23) embodied as flat threads and thinner transverse threads (17, 22, 24) with a round cross-section.

7. Textile web (1) according to one of the preceding claims, characterized in that for the or at least one marking multi-axial layer (5, 6) it applies that exactly one marking longitudinal thread (8) and exactly one thinner longitudinal thread (9) alternate, or that exactly one marking longitudinal thread (8) alternates with several adjacent thinner longitudinal threads (9), and / or in that exactly one marking transverse thread (16, 21, 23) and exactly one thinner transverse thread (17, 22, 24) alternate, or that exactly one marking transverse thread (16, 21, 23) and several adjacent thinner transverse threads (17, 22, 24) alternate.

8. Textile web (1) according to one of the preceding claims, characterized in that the partial webs (7) of the or the respective multi-axial layer (5, 6) are embodied as woven or knitted fabrics or laid scrims, and / or that at least some, preferably all longitudinal threads (8, 9, 18, 20) and / or at least some, preferably all transverse threads (10, 16, 17, 21-24) are monofilaments and / or twisted yarns, in particular multi-stage twisted yarns, preferably made of monofilaments, in particular, wherein the or at least one, preferably all multi-axial layers (5, 6) exclusively comprise monofilaments or exclusively consist of monofilaments.

9. Textile web (1) according to one of the preceding claims, characterized in that the textile web (1) comprises one or more nonwoven layers (3, 4), in particular, wherein the nonwoven layer (3, 4) or nonwoven layers (3, 4) are connected to the carrier (2), preferably by needling, and / or wherein the or at least one nonwoven layer (3, 4) forms a top layer of the textile web (1), and / or wherein the or at least one nonwoven layer (3, 4) has a surface weight in the range of 100 g / m2 to 1000 g / m2 in particular 100 g / m2 to 400 g / m2 or 150 g / m2 to 600 g / m2, preferably 150 g / m2 to 400 g / m2, particularly preferably 150 g / m2 to 200 g / m2, and / or wherein the or at least one nonwoven layer (3, 4) is characterized by a fiber fineness in the range from 6.7 dtex to 100 dtex, in particular 22 dtex to 100 dtex, preferably 44 dtex to 67 dtex.

10. Textile web (1) according to one of the preceding claims, characterized in that at least one, preferably all multi-axial layers (5, 6) are obtained by helical winding of at least one base partial web (11) whose width is less than the width of the textile web (1) and whose length exceeds the length of the textile web (1).

11. Textile web (1) according to one of the preceding claims, characterized in that the longitudinal threads (8, 9, 18, 20) of the partial webs (7) of a multi-axial layer (5, 6) extend at least substantially parallel to one another and / or that the transverse threads (10, 16, 17, 21-24) of the partial webs (7) of a multiaxial layer (5, 6) extend at least substantially parallel to one another.

12. Textile web (1) according to one of the preceding claims, characterized in that the partial webs (7) have straight or toothed or meandering or wavy longitudinal edges (13), and / or in that adjacent partial webs (7) are connected to one another preferably at their longitudinal edges (13), in particular sewn together and / or glued together and / or fused together and / or welded together, and / or in that the multi-axial layers (5, 6) are connected to one another, in particular are needle-punched together.

13. Textile web (1) according to one of the preceding claims, characterized in that the angle (α) the longitudinal threads (8, 9, 18, 20) of a multi-axial layer (5, 6) form with the longitudinal direction (L) of this multi-axial layer (5, 6) is equal to the angle (α ') that the longitudinal threads (8, 9, 18, 20) of another multiaxial layer (5, 6) form with the longitudinal direction (L) of this other multi-axial layer (5, 6), preferably with the two angles (α ,α ') being opposite, and / or in that for at least one multi-axial layer (5, 6) it applies that the angle (α ) the longitudinal threads (8, 9, 18, 20) of the multi-axial layer (5, 6) form with the longitudinal direction (L) of the multi-axial layer (5, 6) is in the range from 0.6° to 10°, in particular in the range from 1.5° to 5°, preferably in the range from 1.8° to 4°.

14. Textile web (1) according to one of the preceding claims, characterized in that the textile web (1) comprises two marking multi-axial layers (5, 6) lying on top of each other, wherein the two marking multi-axial layers (5, 6) lying on top of each other are formed by an endless loop being laid on itself, or wherein the two multi-axial layers (5, 6) lying on top of each other (5, 6) are each formed by one of two superimposed endless loops.

15. Use of a textile web (1) according to one of the preceding claims as a marking felt, in particular in the manufacture of fiber cement panels, preferably corrugated fiber cement panels, or for pulp dewatering.

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