EP4137636A1 - Textile web and use - Google Patents

Abstract

Textile web (1) 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) running transversely to the longitudinal direction (L), the multiaxial layers (5 , 6) viewed in the transverse direction (Q) are at least partially composed of a plurality of partial webs (7) lying next to one another, the partial webs (7) having longitudinal threads (8, 9, 18, 20) extending in a longitudinal direction (TL) of the partial web and transverse to this end, in a partial web transverse direction (TQ) extending transverse threads (10, 16, 17, 21-24), wherein it applies to at least one multiaxial layer (5, 6), marking multiaxial layer, that a part of its longitudinal threads, marking longitudinal threads ( 8), has a greater thickness than further longitudinal threads, in particular adjacent to the longitudinal marking threads (8), thinner longitudinal threads (9), and/or that a part of their transverse threads, transverse marking threads (16, 21, 23), a has a greater thickness than others, the marking transverse threads (16, 21, 23) in particular e adjacent transverse threads, thinner transverse threads (17, 22, 24).

Description

The invention relates to a textile web, in particular a marking felt. In addition, the invention relates to the use of a textile web.

The DE 20 2006 019 681 U1 discloses a textile web that serves as a base for papermachine clothing. The textile web comprises longitudinal threads and transverse threads extending transversely thereto. Seen in the transverse direction, it is at least partially composed of a plurality of partial webs lying against one another, which have straight web edges which are connected to one another. The partial webs extend essentially in the longitudinal direction of the textile web and are formed in that one or more partial web strips have been progressively wound in the longitudinal direction of the textile web and helically transversely thereto, in other words in particular in a helix-like manner. The partial webs have protruding transverse thread sections at their web edges and a filling thread extends there along the web edges. The partial webs are sewn together using sewing threads in such a way that the filling thread or threads are enclosed on both sides by the sewing thread or threads.

Another textile web of a similar kind is from the EP 0 947 623 A1 previously known. This agrees in terms of its structure with the textile web from the DE 20 2006 019 681 U1 essentially match. Here, however, the partial webs lying next to one another are not sewn, but welded to one another in an overlapping area by welding on a connecting thread.

Marking felts are used in pulp production to structure the surface of the pulp layers. Here, on the one hand, drying can be improved due to an enlarged surface and, on the other hand, due to a non-slip surface with higher static friction, slipping of the layers when stacking panels can be prevented. Pulp machines work on a similar principle to paper machines.

Fiber cement panels are usually manufactured on so-called Hatschek machines (similar to cardboard production) with screen cylinders. With the Hatschek principle, several layers of fiber cement are then built up to form a web on a felt using these cylinder molds according to their number. This multi-layer fiber cement web is in turn wound up in several web layers onto a forming roller, in particular one web layer with each revolution of the forming roller. When the required number of layers or total thickness of the fiber cement winding is reached, it is cut off in finite form by the forming roller, laid down and then pressed flat into a flat panel. In a subsequent process, the flat sheets can be machined into corrugated sheets and pressed, or special molded parts can be formed "by hand".

So that the individual fiber cement web layers of these products do not delaminate, they are given a surface structuring via their felt-side layer(s) before the corresponding fiber cement web is wound onto the forming roller as a result of embossing by a marking felt, which anchors the web layers during pressing and thus enables improved layer adhesion. The Hatschek process is for example in the WO 2017/001230 A2 described.

The DE 1 948 217 A1 discloses machine felts for the paper, cellulose and asbestos-cement industries, which are provided with a base fabric whose yarns, which are longitudinally oriented in the working position, consist of spun threads made of wool and/or staple fibers or multiple fibers, so-called multifilaments, and on one or both sides of which there is padding are pinned. In order to reduce the width shrinkage of the felt and at the same time to maintain the openness of the machine felt, the transverse 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 practically complete freedom from marking can be obtained by means of the machine felts.

The EP 2 729 608 A1 discloses a felt for making fiber cement articles and associated methods. The felt comprises a carrier fabric layer (flat fabric/circular fabric) and a fiber fleece.

From the WO 03/069056 A1 a fabric screen for dewatering machines emerges. This comprises absorbent, compressible yarns with a larger cross section at regular MD intervals.

Especially with fiber cement felts, which are based on conventionally woven coarse base fabrics with comparatively thick monofilament threads, it is sometimes considered disadvantageous that conventionally woven bases are restricted in terms of their dimensions due to the maximum weaving machine width. In the case of circular fabrics, there may be a bottleneck in terms of fabric or felt length (fabric weft in the machine or longitudinal direction of the pulp dewatering/fiber cement machines), and with flat fabrics in terms of fabric or felt width (fabric weft in cross direction of pulp dewatering/fiber cement machines).

There is a need to overcome these dimensional limitations. In addition, there is a need for textile webs by means of which fiber cement corrugated sheets or cellulose panels can be provided with particularly suitable markings that can be produced at moderate expense and are characterized by high stability and a long service life.

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

This object is achieved by 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, the multiaxial layers, viewed in the transverse direction, at least partially consisting of a plurality of partial webs lying one on top of the other are composed, 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 one Enclose angles with the transverse direction of the respective multiaxial layer, whereby it applies to at least one multiaxial layer, marking multiaxial layer, that some of its longitudinal threads, marking longitudinal threads, have a greater thickness than others , the longitudinal threads in particular adjacent to the marking longitudinal threads, thinner longitudinal threads, and/or that some of their transverse threads, marking transverse threads, have a greater thickness than other transverse threads, in particular adjacent to the marking transverse threads, thinner transverse threads.

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 panels, preferably fiber cement corrugated panels, or for pulp drainage.

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 in relation to them. In addition to the longitudinal axis of the respective layer, there is also a different longitudinal thread axis. The same applies to the transverse direction of the layers and the transverse threads. Since there are more than the usual two main axes of the layer (longitudinal and transverse), it is also referred to as multiaxial layers.

In other words, the invention is based on the finding that multiaxial layers can be used to optimally mark fiber cement panels and also cellulose panels if the multiaxial layers are provided with marking threads in a targeted manner, the thickness of which exceeds the thickness of other threads, in particular those of adjacent threads in the layer.

Seen in the transverse direction, in particular in the transverse direction of the partial web, longitudinal marking threads with a greater thickness and thinner longitudinal threads with a smaller thickness alternate. Alternatively or additionally, marking transverse threads with a larger thickness and thinner transverse threads with a smaller thickness alternate in the longitudinal direction, in particular viewed in the longitudinal direction of the partial web.

In the area of a marking thread or also in the area of several successive marking threads, the (respective) multiaxial layer is characterized by a greater thickness--compared to areas in which a thinner thread or several thinner threads lying on top of one another lie. The thickness of the or the respective multiaxial layer is therefore not constant over its entire extent, but varies as a result of the different thread dimensions.

Through the use of marking threads, the textile web according to the invention makes it possible to produce very pronounced and clear marking impressions in fiber cement corrugated sheets or cellulose panels, which has proven to be particularly suitable. Since the textile web according to the invention uses one or more multiaxial layers for the marking, the resulting markings in the fiber cement corrugated sheet or in the cellulose panel are not aligned parallel to the longitudinal and transverse direction of the textile web - and the resulting product - but rather stand out characterized by a diagonal gradient, which I have found to be particularly advantageous.

The markings obtainable using textile webs according to the invention in fiber cement panels can serve, for example, to ensure layer adhesion when forming the corrugations to obtain fiber cement corrugated panels or to form special geometries to obtain hand-molded parts. The markings obtainable using textile webs according to the invention in cellulose, in particular cellulose layers, can serve, for example, to provide an enlarged surface for better drying and, on the other hand, to prevent the layers from slipping when stacking panels due to a non-slip surface with higher static friction. Pulp machines work on a similar principle to paper machines.

The helix-like course of marking transverse and/or longitudinal threads over the working width can result in a special embossing effect for the surface structuring of fiber cement and cellulose products. It is possible to mark diagonally in the direction of the longitudinal threads or the transverse threads or in both directions. The combination of MD marker threads (longitudinal direction) and CD marker threads (transverse direction) can reinforce the embossing.

The use of multiaxial layers according to the invention offers the further major advantage that the dimensional limitations of conventionally produced textile webs, in particular carriers for felts designed as flat and/or circular fabrics, 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, a textile web can be obtained from a partial web strip of a given, in particular comparatively small width by helix-like winding, the width of which exceeds that of the partial web strip many times over. 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. In particular, machine bottlenecks caused by given weaving machine widths with regard to the maximum felt dimensions that can be produced can thus be overcome. It is also possible, regardless of the required final dimensions of the marking felts, to provide stock goods in the form of partial webs of textile, which can be divided up and made up shortly after receipt of the order according to customer-specific dimensions.

Purely as an example of widths of partial web strips, those in the range from 50 to 150 cm, for example 102 cm, are mentioned.

For example, supply rolls of up to several hundred meters in length can be produced. Any support dimension from the min/max spectrum can then be flexibly produced from these webs. In the case of conventional, circularly woven endless carriers, the chain required for the intended length must be available.

The textile web according to the invention can also be distinguished by a comparatively open structure, in particular a support structure, which makes cleaning the textile web significantly easier.

Finally, it has been shown that a particularly stable carrier can be obtained from multiaxial layers--even in the case of a comparatively open configuration--which results in a particularly long life and service life for the textile web according to the invention. The textile web according to the invention can also be manufactured with comparatively little effort.

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

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 particularly adjacent thinner longitudinal threads is in the range of 1.5:1 to 6:1 lies. 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.

If the textile web has marking transverse threads as an alternative or in addition, it applies in an advantageous development at least for some, preferably all marking transverse threads that the ratio of their thickness to the thickness in particular adjacent thinner transverse yarns is in the range of 1.5:1 to 6:1. Alternatively or additionally, the thickness of the transverse marking threads may exceed the thickness of, in particular, adjacent thinner longitudinal threads by at least 0.1 mm.

It has also proven to be particularly suitable if at least some longitudinal marking threads have a thickness in the range from 0.3 mm to 1.2 mm, preferably 0.4 mm to 0.8 mm, particularly preferably 0.4 mm up to 0.6 mm.

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.

Furthermore, at least for some transverse marking threads, it can be the case that 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.

Alternatively or additionally, at least some thinner transverse threads can have a thickness 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. lies.

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

In principle, marking threads and thinner threads can alternate in different ways, in particular regularly. For example, it can apply to the or at least one multiaxial marking layer that viewed in the transverse direction, exactly one longitudinal marking thread and exactly one thinner longitudinal thread alternate in each case. In other words, there is a 1:1 change. Of course, it is also possible for exactly one longitudinal marking thread and several thinner longitudinal threads lying next to one another to alternate, viewed in the transverse direction. Then there is a change of 1:n (with n thinner threads). A 1:2 or 1:3 or 1:4 or also 1:5 alternation for the longitudinal threads may be mentioned purely by way of example. The several thinner threads lying next to one another are then preferably characterized by the same thickness.

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

Exactly one marking transverse thread and several thinner transverse threads lying next to one another can also alternate in each case, ie there is a 1:n alternation of the transverse threads. A 1:2 or 1:3 or 1:4 or also 1:5 weft change for the transverse threads is mentioned as an example of this. The several thinner threads lying next to one another are then preferably characterized by the same thickness.

Finally, it cannot be ruled out that several adjacent marking threads alternate with a thinner thread, in other words there is an n:1 change, whereby this can apply to both the longitudinal and the transverse threads.

It is also possible to change several marking threads with several thinner threads, i.e. an n:n change, whereby this can also apply to both the longitudinal and the transverse threads. The several marking threads lying next to one another are then preferably characterized by the same thickness and/or the several thinner threads lying next to one another.

With regard to the cross-sectional shape of the threads, the following has proven itself, for example. At least some of the longitudinal threads and/or at least some of the transverse threads can e.g. B. have a round cross-section. This can also apply to all longitudinal threads and/or all transverse threads of the textile web.

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

In the case of round thread cross sections, the thickness corresponds to the diameter of the threads.

An example of a multiaxial marking layer has only threads with a round cross section and marking threads only in the longitudinal direction. For example, longitudinal threads (at least) of two different diameters can be provided, specifically marking longitudinal threads of a larger diameter and thinner longitudinal threads of a smaller diameter, the z. B. in a change of 1: 1, or another change, alternate, while all transverse threads have the same diameter. This configuration enables a particularly suitable marking. The diameter of the transverse threads of the same thickness can then be, for example, 0.35 mm or 0.4 mm or even 0.5 mm.

As an alternative or in addition to the fact that the textile web according to the invention has threads with a round cross section, flat threads can also be present.

Accordingly, it can be the case that at least some longitudinal threads are designed as flat threads and/or that at least some transverse threads are designed as flat threads. For example, at least some longitudinal marking threads can be designed 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.

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

Flat threads can, for example, have an at least essentially rectangular or also oval cross section. When viewed in cross-section, flat threads are wider than they are thick. In the case of a rectangular cross section, for example, the thickness corresponds to the extension of the shorter side of the rectangle.

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

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

The or at least one marking multiaxial layer can also have marking transverse threads with a round cross section and thinner transverse threads designed as flat threads.

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

Another example of a particularly suitable multiaxial marking layer has longitudinal threads with a round cross section, all of which are characterized by the same diameter, and transverse threads with two different cross-sectional shapes and 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 marking thread followed by one or two thinner threads, etc. This configuration of the marking multiaxial layer or layers also ensures a particularly suitable marking.

Another example of a preferred embodiment of a marking multiaxial layer has longitudinal threads with a round cross section, all of which are characterized by the same diameter, and transverse threads with a circular cross section of two different diameters and transverse threads with a rectangular cross section, in particular flat threads, of two different thicknesses, the Eg in the shot sequence 1:1, or another shot sequence, alternate. In other words, there are both marking 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 type 2-2 developed by dividing the weft repeat (cf. also DIN 61101, in particular the version of this DIN valid at the time of filing or priority).

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

The individual monofilaments of, in particular, multi-stage threads can be distinguished, for example, by a thickness in the range from 0.2 to 0.4 mm. Examples of thread configurations are 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 0.2mm x 20 or 0.3mm x 9.

A particularly preferred embodiment is characterized in that the or at least one, preferably all, multiaxial layers exclusively comprise or consist of monofilaments. In other words, there is then a purely monofilament configuration of the multiaxial carrier construction, which has proven to be particularly suitable.

Provision can also be made for the or at least one multiaxial layer to be formed from the longitudinal and transverse threads, in other words not to have any further components in addition to the longitudinal and transverse threads.

A further embodiment is characterized in that the partial webs of the respective multiaxial layer or layers are designed as woven or knitted fabrics or scrims (longitudinally and/or transversely). A comparatively open structure is then provided, which in particular enables particularly good cleaning. Fabric multiaxial layers have proven to be particularly suitable. In all three cases, the multiaxial layers preferably have structures that are as open as possible.

The textile web according to the invention or at least parts of this, z. B. one or more multiaxial layers, can also be felted, such as fulled or needled.

With regard to the thickness of the multiaxial layers, it has proven useful, for example, if this is in the range from 0.5 mm to 2.0 mm, preferably 0.8 mm to 1.6 mm, particularly preferably 1.0 mm to 1.3 mm.

In addition to the carrier with the multiaxial layers, the textile web according to the invention expediently comprises one or more fleece layers. If one or more non-woven layers are present, it is preferred that the non-woven layer or non-woven layers are connected to the carrier and to one another, preferably needled.

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

If one or more non-woven layers are present, they can have 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 .

With regard to a machine-side (cover) fleece layer, it is preferred that its weight per unit area is in the range from 100 g/m ² to 400 g/m ² , in particular 150 g/m ² to 200 g/m ² .

A product-side (cover) fleece 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 ² on.

The fleece layer or at least one fleece layer can further preferably be distinguished 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.

In general, a (cover) non-woven layer should be as thin or light as possible so that the marking threads of one or more multiaxial marking layer(s), in particular underneath, can develop their full effect. It has proven itself, for example, if its thickness is in the range from 0.1 mm to 2.0 mm, preferably 0.3 mm to 1.0 mm.

In a further expedient embodiment it is provided that at least one, preferably all, multiaxial layers are obtained by helically winding at least one base part web, the width of which is less than the width of the textile web and the length of which exceeds the length of the textile web. The (respective) base part web is given in particular by a comparatively long part web strip, which is then wound up progressively in the width direction in a helix-like manner in order to obtain a multiaxial layer.

The longitudinal threads of the partial webs of a multiaxial layer expediently extend at least essentially parallel to one another and/or the transverse threads of the partial webs of a multiaxial layer extend at least essentially parallel to one another.

In the present case, at least essentially parallel is to be understood in particular as meaning that there is a deviation of at most 15°, in particular at most 10°, preferably at most 5°.

The partial webs can have straight longitudinal edges. It is also possible for the partial webs to be distinguished by other longitudinal edge shapes or courses. For example, they can have toothed or meandering or wavy longitudinal edges. Both in the case of straight and non-straight longitudinal edges, the partial webs can be brought into contact with one another in a form-fitting manner.

According to a further exemplary embodiment, adjacent partial webs are preferably connected to one another at their longitudinal edges. For example, they can be sewn to one another and/or glued to one another and/or fused to one another and/or welded to one another. Adjacent partial webs can be in abutment with each other or have overlapping areas.

Connecting adjacent partial webs by sewing can, for example, as in FIG DE 20 2006 019 681 U1 be realized as described. Accordingly, web edges lying side by side face each other in abutment and at least one filling thread is loosely inserted there. The partial webs are sewn together using sewing threads in such a way that the filling thread or threads are enclosed on both sides by the sewing thread or threads.

A weld can, for example, as in the EP 0 947 623 A1 disclosed, can be achieved by means of an ultrasonic welding device. The partial webs have protruding thread sections at their web edges, which overlap one another, and at least one connecting thread is laid over the thread sections and welded to the thread sections.

As an alternative or in addition to welding by means of ultrasound, laser welding has proven to be particularly suitable for the present invention proven. Welding with a hot wedge and/or high-frequency welding is also suitable.

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

A further advantageous embodiment is characterized in that the angle that the longitudinal threads of a multiaxial layer enclose with the longitudinal direction of this multiaxial layer corresponds in terms of amount to the angle that the longitudinal threads of the or another multiaxial layer enclose with the longitudinal direction of this other multiaxial layer, preferably where the two angles are in opposite directions. The angles of two multiaxial layers, which can also be referred to as multiaxial angles, are then, in other words, of the same size but opposite, in other words oriented in opposite directions. This enables a particularly even distribution of force.

The angle which 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.

It can also apply to at least one multiaxial layer that the angle that the longitudinal threads of the multiaxial layer enclose with the longitudinal direction of the multiaxial layer 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°. The setting of the angle size is inversely proportional to the length of the textile web - with a defined width of the partial web. In other words, it can be the case that the longer the textile web is for a given width of the partial web or partial webs, the smaller the angle to the longitudinal direction of this turns out to be. A textile web length of 6 mm to 100 m and an angle of 10° are purely exemplary suitable combinations of textile web length ranges and associated angular ranges up 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°.

The width of the textile web according to the invention can vary and be selected depending on the application. For example, it can be in the range of 1 to 12 m. The widths of the fiber cement felts are appropriately adapted to the national standard formats of fiber cement panels applicable in each country: Standard widths of fiber cement felts, in particular DIN-analogous widths, are, for example, 1.5 m for the production of single panels and 2.6 m for the production of double plates. For pulp dewatering, for example, the width may range from 2.5 m to 10.6 m.

A further embodiment is characterized in that the textile web comprises two marking multiaxial layers lying on top of one another, the two marking multiaxial layers lying on top of one another being formed by an endless loop placed on top of itself.

In principle, it is sufficient to achieve the marking if the textile web has a multiaxial marking layer with longitudinal marking threads and/or transverse marking threads. Alternatively, it may comprise more than one such layer. This can also result from the production process. For example, a carrier comprising two marking multiaxial layers or consisting of them can be obtained by a marking multiaxial layer, e.g. B. as a woven or scrim or knitted fabric with longitudinal and transverse threads as an endless loop and then forming two running in the transverse direction folds (transverse or CD folds) is stored on itself. In this way, two marking multiaxial layers lying on top of one another with opposite winding angles are obtained. In the area or near the folds can each a seam can be provided, resulting in loops which can be joined to join the free ends to obtain an endless loop (half the length of the original endless loop laid down on itself). In this case there is a carrier with a seam.

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 one another, e.g. by pushing one endless loop into the other from the side.

A further embodiment can be characterized in that the textile web comprises two multiaxial layers lying on top of one another, with the two multiaxial layers lying on top of one another being formed by one of two endless loops lying on top of one another, preferably with only one of the multiaxial layers being used as a multiaxial marking layer with longitudinal marking threads and/or Marking transverse threads is formed, especially the outer. It is then more preferred that the multiaxial marking 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 same.

In the case of two endless loops lying one on top of the 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. Then one multiaxial endless loop can be manufactured or used with and one without marking threads, so that the result is a carrier with two multiaxial layers, of which only one layer is a marking multiaxial layer. The multiaxial marking layer is then expediently in contact with or closer to the product side.

Figur 1

ein Ausführungsbeispiel einer erfindungsgemäßen Textilbahn mit zwei Multiaxiallagen und einer produkt- sowie einer maschinenseitigen Deck-Vlieslage in stark vereinfachter, schematischer Schnittdarstellung;

Figur 2

eine rein schematische Aufsicht auf den Träger der Textilbahn aus Figur 1;

Figur 3

die Helix-artige Wicklung eines Teilbahnstreifens zum Erhalt einer Multiaxiallage in rein schematischer Darstellung;

Figur 4

eine rein schematische Teildarstellung eines ersten Ausführungsbeispiels einer Markier-Multiaxiallage in Form von Fadengelegen, die Markier-Längsfäden umfasst, wobei Teilbahnen dieser mittels einer Laserschweißeinrichtung verbunden werden;

Figur 5

eine rein schematische Teildarstellung eines zweiten Ausführungsbeispiels einer Markier-Multiaxiallage in Form eines Gewebes, die Markier-Querfäden umfasst;

Figur 6

eine rein schematische Teildarstellung eines dritten Ausführungsbeispiels einer Markier-Multiaxiallage in Form eines Gewebes, die Markier-Querfäden umfasst;

Figur 7

eine Teildarstellung eines Markierabdrucks, der mit einer erfindungsgemäßen Textilbahn erhalten wurde;

Figur 8

eine Teildarstellung eines Markierabdrucks, der mit einer konventionellen Textilbahn erhalten wurde; und

Figur 9

eine Teildarstellung eines weiteren Markierabdrucks, der mit einer weiteren konventionellen Textilbahn erhalten wurde.

Further features and advantages of the present invention become clear from the following description of embodiments of textile webs according to the invention with reference to the attached drawing. Inside is:

figure 1

an embodiment of a textile web according to the invention with two multiaxial layers and a product-side and a machine-side nonwoven cover layer in a greatly simplified, schematic sectional view;

figure 2

a purely schematic view of the carrier of the textile web figure 1 ;

figure 3

the helix-like winding of a partial web strip to obtain a multiaxial layer in a purely schematic representation;

figure 4

a purely schematic partial illustration of a first exemplary embodiment of a multiaxial marking layer in the form of fabrics, which includes longitudinal marking threads, partial webs of which are connected by means of a laser welding device;

figure 5

a purely schematic partial representation of a second embodiment of a marking multiaxial layer in the form of a fabric that includes marking transverse threads;

figure 6

a purely schematic partial illustration of a third exemplary embodiment of a marking multiaxial layer in the form of a fabric, which comprises marking transverse threads;

figure 7

a partial representation of a marking imprint, with an inventive Textile sheet has been obtained;

figure 8

a partial depiction of a marking imprint obtained with a conventional textile web; and

figure 9

Figure 12 is a partial view of another marking imprint obtained with another conventional fabric web.

The same components or elements are provided with the same reference symbols in the figures.

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

The marking felt 1 is multi-, specifically four-layered. It comprises a two-ply carrier 2 and two fleece layers 3, 4, of which one fleece layer 3 is arranged on the product side and the other fleece layer 4 on the machine side of the carrier 2. The backing 2 comprises two multiaxial layers 5, 6, a multiaxial layer 5 on the product side and a multiaxial layer 6 on the machine side.

It should be noted that in the oversimplified figure 1 the internal structure of the four layers 3, 4, 5, 6 is not shown. This figure is only intended to illustrate the multi-layer structure. 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 fleece layers 3, 4 can also be present. The carrier 2 can further comprise more than two multiaxial layers and/or other layers not configured as multiaxial layers.

With regard to the multiaxial layers 5, 6 of the example shown, it applies that 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, the figure 2 be taken, which is a purely schematic plan view of the carrier 2 from figure 1 shows, namely on its product page. Each of the two multiaxial layers 5, 6 of the carrier 2 is composed of a plurality of partial webs 7 lying against one another, seen in the transverse direction. In figure 2 the partial webs 7 of the product-side multiaxial layer 5 at the top 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.

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 purely schematic figure 4 be taken, which shows two adjacent partial webs 7 of a multiaxial layer 5, 6 by way of example and only in sections. Each partial web 7 - and also the multiaxial layer 5, 6 as such - is given by a scrim.

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. Similarly, 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.

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 or transverse threads 10 are not parallel to the longitudinal or transverse direction L, Q of the multiaxial layer 5 , 6 are oriented, but are inclined or tilted in relation to them. In addition to the longitudinal axis L of the layers 5, 6, there is also a different longitudinal thread axis for each multiaxial layer 5, 6. The same applies to the transverse direction of the layers and the transverse threads 10 . Since there are more than the usual two main axes of the layers (longitudinal and transverse), one can also speak of multiaxial layers.

It should be noted that in the purely schematic figure 2 the arrows representing the partial web transverse directions TQ are overlaid and tilted in relation to the transverse direction Q in order to clearly illustrate the deviation from this. These directions are each actually orthogonal to the longitudinal direction TL of the respective partial webs 7.

In the example shown, the angle α, which the longitudinal threads 8, 9 of the product-side multiaxial layer 5 form with the longitudinal direction L of this multiaxial layer 5, with the angle α', which the longitudinal threads 8, 9 of the other, machine-side multiaxial layer 6 form with the Include the longitudinal direction L of this other multiaxial layer 6, but in terms of amount, as can be seen, is in opposite directions. In the example shown, α and α' are each about 3°. With regard to the angles β and β′, too, it applies that they are the same in terms of absolute value but are oriented in opposite directions and are each 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 one another, namely in both multiaxial layers 5, 6. The angles α, α′, β and β′ can also be referred to as winding angles or multiaxial angles.

Both multiaxial layers 5, 6 were obtained by helically winding at least one base part web 11, the width of which is several times smaller than the width of the marking felt 1 and the length of which is several times the length of the marking felt 1. This wrap is in the figure 3 shown purely schematically and by way of example for a multiaxial layer 5, 6 and using a base part web 11. Rollers 12 around which the winding takes place can be used for a comfortable, simple winding process.

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

In the example according to the figures 1 and 2 the two multiaxial layers 5, 6 are of the same design and both represent multiaxial marking layers 5, 6, which have longitudinal marking threads and/or transverse marking threads. Specifically, the two multiaxial marking layers each have longitudinal marking threads 8 and thinner longitudinal threads 9 . The marking longitudinal threads 8 and thinner longitudinal threads 9 alternate here with a change of 1:1.

The transverse threads 10, however, all have the same thickness. It should be noted that production-related deviations between threads, such as the transverse threads 10, are of course not excluded, even if it is said here that they have the same thickness. If there are tolerances with regard to the thicknesses of these threads 10, however, it applies that these are significantly less than the differences in thickness between marking threads and thinner threads, in particular by at least one order of magnitude. Regarding all threads it is true that production-related tolerances can exist to a certain extent, which must be taken into account when speaking of the same thicknesses in the present case. Thread diameter tolerances are usually in the range of +/- 0.01 to 0.02 mm.

how to get in figure 4 recognizes, 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. All threads 8, 9, 10 of the marking multiaxial layers 5, 6 of the carrier 2 of the textile web 1 are also provided by monofilaments. In other words, the carrier 2 is purely monofilament.

The diameter of the longitudinal marking threads 8 is in accordance with the embodiment figure 4 at 0.6 mm and the diameter of the thinner longitudinal threads 9 at 0.3 mm. The thickness of the transverse threads is 0.4 mm. These values are to be understood purely as examples and can also be different. The thickness of the longitudinal marking threads 8 is preferably at least 1.5 times greater than the thickness of the thinner longitudinal threads 9.

Since the multiaxial layers have longitudinal threads 8, 9 of two different thicknesses, they can be used to make particularly good markings in fiber cement panels or cellulose panels, in the course of which the textile web 1 is used. Accordingly, this is designed as a marking felt 1 .

It should be emphasized that it would in principle also be sufficient to obtain markings, in particular in fiber cement panels or cellulose panels, if only one of the multiaxial layers 5, 6 were designed as a multiaxial marking layer with longitudinal and/or transverse marking threads, then it would be more expedient Direction of the product-side multiaxial layer 5 to be turned or to face the product.

It also applies that, even if the two multiaxial layers 5, 6 of the carrier 2 are of the same design in the exemplary embodiment shown, this does not necessarily have to be the case. It can, for example, in deviation from the example from the figures 1 and 2 there are also two or more differently designed marking multiaxial layers.

The thickness of the multiaxial layers 5, 6 can be, for example, 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.

The fleece pads 3, 4 are expediently designed to be as thin as possible so that the marking threads 8 can optimally develop their full effect. It has proven itself, for example, if its thickness is in the range from 0.1 mm to 2.0 mm, preferably 0.3 mm to 1.0 mm. The nonwoven layer 3 on the product side has a basis weight of 300 g/m ² and the nonwoven layer 4 on the machine side has a basis weight of 180 g/m ² . The fineness of the fibers is - in both fleece layers 3, 4 - at 44 dtex.

As can be seen in figure 2 recognizes straight longitudinal edges 13 on. Of course, other longitudinal edge shapes are also possible, such as toothed, meandering or corrugated longitudinal edges 13. Partial webs 7 lying next to one another are connected to one another in the region of their longitudinal edges 13. According to the example 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 one another. At least one connecting thread, in this case 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, which is to be understood as an example.

In the figure 4 Also 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 a connecting thread and achieves the welding. The example shown is a laser welding device 15. Alternatively, it can also be an ultrasonic welding device, for example. The type of connection shown here and its production is also in the EP 0 947 623 A1 described.

The Figures 5 and 6 show alternative embodiments of marking multiaxial layers. This is also only purely schematic and in sections. Alternatively, that the textile web 1 from figure 1 a carrier 2 with multiaxial layers 5, 6 according to figure 4 has, it can also multiaxial layers 5, 6 as in the figure 5 and 6, respectively, and described below. Correspondingly designed textile webs 1 represent - in addition to the first embodiment with multiaxial layers 5, 6 figure 4 - A second and third embodiment of a textile web 1 according to the invention.

In the examples Figure 5 and 6 the partial webs 7 and thus the multiaxial layers 5, 6, which are composed of these, are designed as flat fabrics. All the threads are monofilaments here, so that it also applies here that the multiaxial layers 5, 6 are designed to be purely monofilament.

According to the example figure 5 there is a weft body 2-2 weave. The slope number is 1.

In contrast to the example from figure 4 no 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 corresponding marking transverse threads 16 (marking weft threads) of a larger one Thicker and thinner transverse threads 17 (standard weft threads) of a comparatively smaller thickness.

Another difference from the example figure 4 consists in the cross-sectional shapes of the transverse threads, specifically the thinner transverse threads 17. These are not designed here as threads with a round cross-section, but as flat threads with a rectangular cross-section. Its thickness is 0.3 mm. The transverse marking threads 16 have a round cross section and a diameter of 0.8 mm.

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

Finally, a difference for example consists of figure 4 in the change from marking threads to thinner threads. Here, as can be seen, a marking transverse thread 16 (marking weft threads) is followed by two thinner flat transverse threads 17 (standard weft threads). The change from marking threads to thinner threads is therefore 1:2.

Finally, the example stands out figure 5 by another type of connection of adjacent sub-webs 7. The partial webs 7 are also not, as in figure 4 , welded together, but sewn together, concretely, as in the DE 20 2006 019 681 U1 described. There are no overlapping threads, in other words no overlapping areas, but the longitudinal edges 13 face each other in abutment and a filling thread formed by a longitudinal thread 18 is loosely inserted there. The partial webs 7 are sewn together via 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 threads 19 . In the example shown, a sewing thread 19 is provided, which is sewn in a zigzag stitch.

As an alternative or in addition to the fact that adjacent partial webs 7 are welded or sewn, they can also be glued, for example.

The exemplary embodiment figure 6 differs again in some respects. It also applies here that the multiaxial marking layer shown is designed as a monofilament flat fabric, specifically with a weave of the weft-cross-body type 2-2 developed by dividing the weft repeat.

In accordance with the example 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 in turn is to be understood as a purely exemplary thickness.

With regard to the transverse threads 21-24 (weft threads), it applies that there are two different cross-sectional shapes and two different thicknesses. Specifically, transverse marking threads 21, 23 with a round cross section, in other words circular transverse marking threads 21, 23 with a larger diameter, and thinner transverse threads 22, 24 designed as flat threads with a rectangular cross section, the thickness of which corresponds to the diameter of the circular marking transverse threads 21 , 23 falls below, provided.

The diameter of the circular marking transverse threads 21, 23 is 0.6 mm here and the thickness of the thinner transverse threads 22, 24 designed as flat threads is 0.3 mm.

These values are also exemplary and may vary.

As can be seen, each round marking transverse thread 21, 23 is followed by a thin transverse thread 22, 24 designed as a flat thread, before another round marking transverse thread 21, 23 comes etc.. In other words, there is a weft exchange of 1:1 from marker to thinner threads.

Conversely, the marking transverse threads 21, 23 can also be present as flat threads with a greater thickness and the thinner transverse threads 22, 24 as circular threads with a smaller diameter.

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

Through the use of marking threads 8, 16, 21, 23, the textile webs 1 according to the invention enable the production of particularly pronounced and clear marking impressions in fiber cement panels or cellulose panels, which has proven to be particularly suitable. Since the textile webs 1 according to the invention use one or more multiaxial layers 5,6 for the marking, the markings resulting in the fiber cement or the cellulose are not aligned parallel to the longitudinal and transverse direction L, Q of the textile web 1, but are characterized by a diagonal progression, which has proven to be particularly suitable.

The figure 7 shows a section of a marking imprint of a fiber cement panel, which was obtained using a textile web 1 designed as a marking felt according to the invention.

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, result in an angle to the longitudinal and transverse directions L, Q of the textile web 1 used - and the resulting fiber cement panel or of the resulting pulp sheet - extending orientation. Embossings of predefined dimensions are obtained as a result of monofilaments of different diameters or thicknesses.

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

The textile webs 1 according to the invention can be characterized by a comparatively open structure, in particular a carrier structure, which makes cleaning them significantly easier.

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

The Figures 8 and 9 each show sections of marking imprints of fiber cement panels that were obtained using conventional textile webs.

As can be seen, only "fuzzy" markings without clear contours can be obtained here, which in the case of figure 8 predominantly lengthwise and crosswise and in the case of figure 9 predominantly longitudinal are, in both cases with a right-angled orientation to the longitudinal or transverse direction L, Q. Embossings of uneven, irregular dimensions result as a result of a characteristically uneven surface structure of twisted threads of the same diameter.

According to the example figure 8 a conventional fabric backing was used, which is a circular fabric made of multifilament threads, specifically multifilament threads of 1,900 dtex in the longitudinal direction L and multifilament threads of 1,000 dtex in the transverse direction Q. The fabric weave is a type of plain weave .

According to the example figure 9 a conventionally manufactured fabric backing, also a circular fabric, made of monofilaments with an additional cover weft thread (16-ply monofilament threads: 0.2 mmx 4 x 4) was used in the longitudinal direction.

Claims (15)

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) running transversely to the longitudinal direction (L), wherein the multiaxial layers (5, 6), viewed in the transverse direction (Q), are composed at least partially of a plurality of partial webs (7) lying next to one another, the partial webs (7) having longitudinal threads (8, 9, 18, 20 ) 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 multiaxial layer (5, 6) enclose an angle with the longitudinal direction (L) of the respective multiaxial layer (5, 6) and the transverse threads (10, 16, 17, 21-24) of the partial webs (7) of the respective multiaxial layer (5, 6) form an angle with the Include transverse direction (Q) of the respective multiaxial layer (5, 6), wherein for at least one Multiaxiall age (5, 6), marking multiaxial layer, it applies that part of its longitudinal threads, marking longitudinal threads (8), has a greater thickness than other longitudinal threads, particularly adjacent to the marking longitudinal threads (8), thinner longitudinal threads (9) , and/or that some of their transverse threads, marking transverse threads (16, 21, 23), have a greater thickness than other transverse threads, thinner transverse threads (17, 22, 24). Textile web (1) according to Claim 1, characterized in that for at least some, preferably all, longitudinal marking threads (8), the ratio of their thickness to the thickness of adjacent, thinner longitudinal threads (9) is in the range from 1.5: 1 to 6:1 lies,
and/or that at least for some, preferably all, marking transverse threads (16, 21, 23) the ratio of their thickness to the thickness of neighboring thinner transverse threads (17, 22, 24) is in the range of 1.5:1 to 6:1 lies. Textile web (1) according to Claim 1 or 2, characterized in that at least some longitudinal marking threads (8) have a thickness 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, and/or that at least for some thinner longitudinal threads (9), 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, lies, and/or that at least for some transverse marking threads (16, 21, 23) 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 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. 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 with at least some longitudinal marking threads (8) and/or at least some thinner longitudinal threads ( 9) have a round cross-section,
and/or that at least some transverse threads (10, 16, 17, 21-24) have a round cross-section, with 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. Textile web according to one of the preceding claims, characterized in that at least some longitudinal threads (8, 9, 18, 20) are flat threads are formed, preferably with at least some longitudinal marking threads (8) being formed as flat threads,
and/or that at least some transverse threads (10, 16, 17, 21-24) are designed as flat threads, preferably with at least some marking transverse threads (16, 21, 23) being designed as flat threads, and/or that at least some thinner Transverse threads (17, 22, 24) are designed as flat threads. Textile web (1) according to Claims 4 and 5, characterized in that the or at least one marking multiaxial layer (5, 6) has marking longitudinal threads (8) with a round cross section and thinner longitudinal threads (9) designed as flat threads, and/or that the or at least one multiaxial marking layer (5, 6) has longitudinal marking threads (8) designed as flat threads and thinner longitudinal threads (9) with a round cross section, and/or that the or at least one marking multiaxial layer (5, 6) has marking transverse threads (16, 21, 23) with a round cross section and thinner transverse threads (17, 22, 24) designed as flat threads, and/or that the or at least one multiaxial marking layer (5, 6) has transverse marking threads (16, 21, 23) designed as flat threads and thinner transverse threads (17, 22, 24) with a round cross section. Textile web (1) according to one of the preceding claims, characterized in that for the or at least one marking multiaxial layer (5, 6) it applies that in each case exactly one marking longitudinal thread (8) and exactly one thinner longitudinal thread (9) alternate, or that in each case exactly one longitudinal marking thread (8) and several thinner longitudinal threads (9) lying next to one another alternate, and/or that in each case exactly one marking transverse thread (16, 21, 23) and exactly one thinner transverse thread (17, 22, 24) alternate, or that in each case exactly one marking transverse thread (16, 21, 23) and several thinner transverse threads (17, 22, 24) lying next to one another alternate. Textile web (1) according to one of the preceding claims, characterized in that the partial webs (7) of the respective multiaxial layer or layers (5, 6) are designed as woven or knitted fabrics or thread scrims, and/or that at least some, preferably all of the longitudinal threads (8, 9, 18, 20) and/or at least some, preferably all, transverse threads (10, 16, 17, 21-24) are provided by monofilaments and/or in particular multi-stage twisted yarns, in particular made of monofilaments, in particular wherein the or at least one preferably all multiaxial layers (5, 6) exclusively comprise or consist of monofilaments. Textile web (1) according to any one of the preceding claims, characterized in that the textile web (1) comprises one or more fleece layers (3, 4), in particular the fleece layer (3, 4) or fleece layers (3, 4) with the carrier (2) are connected, preferably needled, and/or wherein the or at least one non-woven layer (3, 4) forms a cover layer of the textile web (1), and/or wherein the or at least one non-woven layer (3, 4) differs due to 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 m ² , particularly preferably 150 g/m ² to 200 g/m ² , and/or wherein the or at least one fleece layer (3, 4) is characterized by a fiber fineness in the range from 6.7 dtex to 100 dtex, in particular 22 dtex up to 100 dtex, preferably 44 dtex to 67 dtex. Textile web (1) according to one of the preceding claims, characterized in that at least one, preferably all multiaxial layers (5, 6) by helical winding of at least one base part web (11), whose width falls below the width of the textile web (1) and whose length exceeds the length of the textile web (1). 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 multiaxial layer (5, 6) extend at least essentially parallel to one another and/or that the Cross threads (10, 16, 17, 21-24) of the partial webs (7) of a multiaxial layer (5, 6) extend at least essentially parallel to one another. 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 that adjacent partial webs (7) are preferably connected to one another at their longitudinal edges (13). , in particular sewn together and/or glued together and/or fused together and/or welded together,
and/or that the multiaxial layers (5, 6) are connected to one another, in particular are needled to one another. Textile web (1) according to one of the preceding claims, characterized in that the angle (α) which the longitudinal threads (8, 9, 18, 20) of a multiaxial layer (5, 6) make with the longitudinal direction (L) of this multiaxial layer (5, 6) enclose, with the angle (α') which the longitudinal threads (8, 9, 18, 20) of the or another multiaxial layer (5, 6) enclose with the longitudinal direction (L) of this other multiaxial layer (5, 6), the same amount, preferably, with the two angles (α, α') being in opposite directions,
and/or that for at least one multiaxial layer (5, 6) it applies that the angle (α) which the longitudinal threads (8, 9, 18, 20) of the multiaxial layer (5, 6) make with the longitudinal direction (L) of the multiaxial layer ( 5, 6) in the range of 0.6° to 10°, in particular in the range from 1.5° to 5°, preferably in the range from 1.8° to 4°. Textile web (1) according to one of the preceding claims, characterized in that the textile web (1) comprises two superimposed multiaxial marking layers (5, 6), the two superimposed multiaxial marking layers (5, 6) being formed by an endless loop laid on top of itself are formed, or wherein the two multiaxial layers (5, 6) lying on top of one another are each formed by one of two endless loops lying on top of one another. Use of a textile web (1) according to one of the preceding claims as a marking felt, in particular in the context of the production of fiber cement panels, preferably fiber cement corrugated panels, or for pulp drainage.

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