Composite material comprising a warp knit textile panel with first and second opposed faces, the first face being coated with a polymeric layer, and method of making same

Abstract

The invention relates to a composite material comprising a warp-knitted textile panel having columns of stitches corresponding to the warp direction and rows of stitches corresponding to the weft direction, and first and second opposing faces, said first face being coated with a layer consisting of at least one polymer material. Advantageously, each of said columns of stitches comprises first formed stitches, one row of stitches in two, with a first thread, and second formed stitches, one row of stitches in two, with a second thread, the first and the second stitches being alternated one row of stitches in two and being in opposition. Furthermore, in the weft direction, the first thread and the second thread each form stitches, alternately, one row of stitches in two.

Description

Background of the invention

[0001] The present invention relates to the technical field of composite materials comprising a warp-knitted textile panel, preferably comprising weft threads inserted in the weft, and coated on at least one of its faces with a layer of at least one polymer material.

[0002] Warp-knitted textile panels are thus used as a reinforcement of the layer in at least one polymer material. These composite materials can be used as a protective tarpaulin, for example for swimming pools, as an advertising medium, as a luggage cover, as a roofing element, in particular for terraces, or even as a self-adhesive strip. In the latter case, the textile panel comprises a film capable of coming into contact with the adhesive layer without adhering to it.

[0003] A self-adhesive strip is known comprising a warp-knitted textile panel having weft threads inserted at regular intervals. This knitted panel has the disadvantage that it has first and second opposite faces which are not regular. The lack of flatness of these faces requires the use of a relatively large quantity of polymer material in order to regularize them and obtain a homogeneous composite material. In addition, the shape of the mesh columns of the knitted panel is visible in the adhesive layer, which gives an unsightly appearance to the composite material.

[0004] This aspect can be a considerable obstacle to using this type of knitted panel when it comes to composite materials with an ornamental function, such as for protective covers for swimming pools, luggage covers, advertising supports or even roofing elements. Indeed, the mesh columns create a lock effect on the surface of the composite material.

[0005] EP 0.978.583 A1 relates to an article comprising loops projecting from its surface capable of acting as female attachment members in a hook and loop type attachment device. As can be seen in Figures 9 to 11 in particular, the columns of stitches are formed using two mesh bars working at the same time and on each row of stitches and not alternately so that the first thread and the second thread form stitches on each of the rows of stitches and not every other row of stitches. The columns of stitches have loops at regular intervals and therefore voluminous projections. The surface of the material comprising these columns of stitches will therefore not be regular and flat and will carry an irregular and significant quantity of a layer in a polymer material which would be applied to said surface.

[0006] Also known are EP 1 433 885 A1, EP 2 308 707 A1 and US 3 442 099 A relating to knitted articles.

[0007] The present invention thus relates to a warp-knitted textile panel having first and second faces whose flatness and regularity are improved, limiting the locking effect of the mesh columns in the layer in at least one polymer material while satisfying the criteria of mechanical resistance in the warp and weft directions in order to ensure its primary reinforcement function. Summary of the invention

[0008] The present invention relates, according to a first aspect, to a composite material comprising a warp-knitted textile panel having columns of stitches corresponding to the warp direction and rows of stitches corresponding to the weft direction and first and second opposite faces, said first face being coated with a layer in at least one polymer material. Advantageously, each of said columns of stitches comprises first stitches formed every other row of stitches with a first yarn, and second stitches formed every other row of stitches with a second yarn, the first and second stitches being alternated every other row of stitches and being in opposition.

[0009] Advantageously, in the weft direction, the first thread and the second thread each form one row of stitches out of two in an alternating manner.

[0010] Said textile panel comprises weft threads inserted in the weft direction every n out of p rows of stitches, n and p being integers, with n less than or equal to p.

[0011] Said textile panel comprises first stitches and second stitches which are chain stitches, and which extend over a column of stitches, or

[0012] said textile panel comprises first stitches which are chain stitches, and second stitches which are knitted stitches extending over at least two adjacent columns of stitches.

[0013] Advantageously, the use of two yarns to form first and second alternating stitches on a column of stitches, every other row of stitches, makes it possible to halve the count of the single mesh yarn used in the warp-knit textile panels of the prior art and thus improve the flatness and regularity of the textile panel. In addition, the thickness of said knitted panel is also reduced. Advantageously, the mechanical strength of the knitted panel according to the invention is substantially of the same order as that of the panels of the prior art since there is an overall count of mesh yarns in each column of stitches for the panel according to the invention equal to the count of the single mesh yarn in the panel of the prior art.

[0014] In addition, the characteristic that the first stitches and the second stitches are alternated and in opposition allows the stitch feet to be balanced and therefore the flatness and geometric regularity of the stitch columns to be improved.

[0015] In addition, the first yarn forms stitches on every other row of stitches and therefore on which the second yarn does not form stitches, which improves the flatness and regularity of the knitted panel.

[0016] The warp-knit textile panel according to the invention is thus improved to receive a layer in at least one polymer material at least along its first face, the resulting composite has a more regular surface condition and has better flatness, which also makes it possible to reduce the quantity of said layer, and therefore represents a substantial gain on the finished composite.

[0017] The weft yarns can be multifilament and / or monofilament yarns, preferably multifilament. The composition of the weft yarns depends on the application of the composite material.

[0018] Preferably, the weft threads are inserted every row of stitches every fourth row of stitches, especially every row of stitches every second row of stitches.

[0019] Depending on the knitting weave, the weft threads allow the columns of stitches to be assembled together, to improve the strength of the knitted textile panel and to control the size of the openings made in the panel according to the number of weft threads inserted per cm in the warp direction.

[0020] Preferably, the number of weft threads inserted per cm in the warp direction is between 1 and 25 per cm, preferably between 1 and 18 per cm.

[0021] Preferably, the number of stitches in the weft direction of the warp-knit textile panel is from 6 to 46 columns of stitches per inch, more preferably from 6 to 40 columns of stitches per inch.

[0022] By definition, a weft thread does not form a stitch but is simply inserted in the weft direction so as to be substantially perpendicular to the warp direction.

[0023] In this text, a guide bar is defined as a guide bar. The knitting machine used in the context of the invention therefore works with at least two guide bars working alternately. Thus, when one guide bar supporting the first yarn is working, the other guide bar supporting the second yarn is not working, thus obtaining alternating first stitches and second stitches as defined in the invention.

[0024] The first stitches and the second stitches can be open or closed.

[0025] Preferably, for the purposes of the present invention, a layer in at least one polymer material is understood to mean any continuous or discontinuous layer. A discontinuous layer is understood to mean a layer comprising said polymer material arranged discontinuously in patterns which may be arranged regularly or not on said first face, for example in dots, columns or any other geometric pattern.

[0026] A continuous layer is understood to mean a layer of uniform or non-uniform thickness applied to the entire first face of the textile panel.

[0027] Said layer according to the invention can be applied to the first face and / or said second face of the textile panel using any technique known to those skilled in the art, and in particular by squeegee coating, by spot coating, spraying, rolling of said layer or even full bath impregnation.

[0028] Said at least one polymer material of the layer applied to the first face of the textile panel may be the same or different from said at least one polymer material of the layer applied to the second face of the textile panel.

[0029] Preferably, when the first face and the second face of the textile panel are each coated with the same layer comprising at least one polymer material, the textile panel is embedded in said layer.

[0030] The first yarn and the second yarn may be multifilament and / or monofilament yarns, preferably multifilament.

[0031] The compositions of the first and second yarns are determined depending on the application of the composite material.

[0032] Likewise, the determination of said at least one polymer material in said layer depends on the application of the composite material.

[0033] The warp knitted panel according to the invention can be knitted on a warp knitting machine with weft insertion, a Rachel knitting machine with weft insertion or a crochet knitting machine with weft insertion.

[0034] The textile panel according to the invention is substantially flat, in particular knitted flat.

[0035] Said one layer in at least one polymer material may comprise various additives such as pigments, fillers, for example titanium dioxide.

[0036] In one embodiment, said warp-knit textile panel comprises first stitches and second stitches which are chain stitches and which extend over a column of stitches.

[0037] In this case, it is necessary to provide weft threads inserted into the stitches of the first and second stitches in order to assemble the columns of stitches together. This arrangement is preferred for manufacturing knitted panels having openings, in particular at least one of the dimensions of which is greater than or equal to 1 mm.

[0038] Advantageously, this arrangement makes it possible to manufacture textile panels that can be manually cut in at least one direction, i.e. in the warp direction and / or in the weft direction.

[0039] Furthermore, the fact that there are no knitted stitches in said panel further improves the flatness. Indeed, the weft threads ensuring the connection between the columns of stitches have a substantially rectilinear direction, because they pass through the stitches of the rows of stitches. On the contrary, when the threads of the knitted stitches extend over at least two adjacent columns of stitches to ensure the connection between the columns of stitches, they do not have a rectilinear trajectory because they are meshed.

[0040] The said chain links can be open or closed.

[0041] When the first stitches are chain stitches and the second stitches are knit stitches extending over at least two adjacent columns of stitches: Since the second stitches extend over at least two columns of stitches, weft threads are not necessary to join the columns of stitches together. Weft threads can still be inserted if the mechanical strength of the knitted panel is to be improved.

[0042] It is also advantageously observed that the weft yarns provide more elasticity to the knitted textile panel when knitted stitches are present. Indeed, when the layer in at least one polymer material is arranged on the first face of the textile panel, the shrinkage behavior during the heat treatment of the assembly formed by said layer and said panel is homogeneous. Indeed, the shrinkage of the textile panel follows the shrinkage of the layer in at least one polymer material, which improves the cohesion and facilitates the assembly of the composite material according to the invention.

[0043] Chain stitches can be open or closed.

[0044] When the first stitches and the second stitches are knitted stitches extending over at least two adjacent stitch columns: the previous technical effect concerning the shrinkage behavior of the composite material is also found in this variant.

[0045] In this case, since the first and second stitches extend over at least two columns of stitches, weft threads are not necessary to join the columns of stitches together. Weft threads can still be inserted if it is desired to improve the mechanical strength of the knitted panel.

[0046] In one variant, the number of stitches in the warp direction of the warp-knit textile panel is from 1 stitch / cm to 25 stitches / cm, preferably from 1 stitch / cm to 18 stitches / cm.

[0047] In one variant, the first yarn, the second yarn and optionally the weft yarn are multifilament and / or monofilament yarns, preferably chosen independently from: polyethylene terephthalate (polyester); polyamide 6-6; polyamide 4-6; polyamide 6; polyethylene; polyacrylic; polypropylene.

[0048] In a variant, the first yarn, the second yarn, and possibly the weft yarn, have a count greater than or equal to 7 dtex, and less than or equal to 3000 dtex, more preferably greater than or equal to 10 dtex.

[0049] Preferably, the count of the first, second and third yarns is greater than or equal to 22 dtex and less than or equal to 1000 dtex.

[0050] In one variant, the layer comprises at least one polymer material selected from the list comprising: polyurethane; polyethylene terephthalate (polyester); polyamide 6-6; polyamide 6; polyamide 4-6; polyvinyl chloride; a fluoropolymer, such as polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF); ethylene vinyl acetate (EVA).

[0051] The subject of the present invention, according to a second aspect, is a method of manufacturing a composite material according to any one of the preceding embodiment variants, comprising the following steps: a) a step of knitting a warp-knit textile panel having first and second opposite faces, and columns of stitches and rows of stitches, on a knitting machine comprising two mesh bars respectively supporting a first yarn and a second yarn for knitting each column of stitches, the two mesh bars working alternately and in opposite directions so that each of said columns of stitches comprises first stitches formed every other row of stitches with a first yarn, and second stitches formed every other row of stitches with a second yarn, the first stitches and the second stitches being and said textile panel comprises weft yarns inserted in the weft direction every n out of p rows of stitches, n and p being integers, with n less than or equal to p, said textile panel comprising first stitches and second stitches which are chain stitches,and which extend over a column of stitches, or said textile panel comprising first stitches which are chain stitches, and second stitches which are knitted stitches extending over at least two adjacent columns of stitches, II b) A step of coating one of said faces of said textile panel with a layer comprising at least one polymer material, resulting in said knitted textile panel being substantially flat.

[0052] Advantageously, in the weft direction, the first thread and the second thread each form one row of stitches out of two in an alternating manner.

[0053] The method comprises a step of inserting into the weft, every n out of p rows of stitches, n and p being integers, with n less than or equal to p, of weft threads.

[0054] Preferably, the first stitches and the second stitches are open or closed chain stitches in opposition.

[0055] Said textile panel comprises first stitches and second stitches which are chain stitches, and which extend over a column of stitches, or said textile panel comprises first stitches which are chain stitches, and second stitches which are knitted stitches extending over at least two adjacent columns of stitches.

[0056] The textile panel is substantially flat.

[0057] The subject of the present invention, according to a third aspect, is a self-adhesive strip that can be manually cut in at least one direction, comprising a composite material according to any one of the preceding embodiments, in particular according to the first aspect and / or the second aspect according to the invention, comprising a warp-knit textile panel, the first stitches and the second stitches of which extend over a column of stitches and comprising weft threads inserted in the weft direction at regular intervals every n out of p rows of stitches, n and p being integers with n less than or equal to p, said layer comprises at least one self-adhesive polymer material, and the second face of said knitted textile panel, optionally coated with said layer, is covered with a plastic film.

[0058] The interlining strip has longitudinal and transverse directions, said strip being divisible in at least one of these directions, preferably in the transverse direction.

[0059] Preferably, the first and second faces of said textile panel are coated with said layer comprising at least one self-adhesive polymer material, in particular so that said panel is embedded in said layer.

[0060] In another variant, when the second face is also coated with a layer in at least one polymeric material, said polymeric material may be the same or different from said at least one polymeric material of the layer coating the first face of the textile panel.

[0061] For the purposes of the present invention, the term "plastic film" means any synthetic film capable of coming into contact with said layer in a self-adhesive polymer material without adhering to the latter. Said plastic film may thus be made of polyethylene terephthalate, polyvinyl chloride, polypropylene or even polyethylene, or even silicone, for example said silicone film is part of a silicone paper.

[0062] Said self-adhesive polymer material may be a polyacrylic glue and generally any material known to those skilled in the art capable of acting as a self-adhesive polymer, for example polyurethane.

[0063] Said self-adhesive polymer material may be a permanent or repositionable adhesive.

[0064] In a sub-variant, the textile panel is coated on a first side with a layer comprising at least one permanent self-adhesive polymer material and on a second side with a layer comprising at least one repositionable self-adhesive polymer material.

[0065] Preferably, the first face and / or the second face is (are) coated with a plastic film, in particular a silicone paper.

[0066] The present invention relates, according to a fourth aspect, to a strip of interlining comprising a composite material according to any one of the preceding embodiments, said layer comprising at least one hot-melt polymer material.

[0067] A strip of interfacing is generally used in the manufacture of clothing items to give support to a particular area of ​​the item, such as the collar, to join textile panels or to conceal seam areas.

[0068] Said hot-melt polymer material may be any polymer material known to those skilled in the art and capable of melting under the effect of heat. For example, said hot-melt polymer material may be a polyamide 6 or 6-6 polymer.

[0069] The present invention relates, according to a fifth aspect, to a strip of interlining comprising a composite material according to any one of the preceding embodiments, said layer comprising at least one self-adhesive polymer material.

[0070] Said self-adhesive material may be a glue, such as a polyacrylic glue.

[0071] The present invention relates, according to a sixth aspect, to a protective tarpaulin, an advertising medium, a luggage cover or roofing element, comprising a composite material according to any one of the preceding embodiments, of which said layer comprises at least one abrasion-resistant polymer material, the textile panel being embedded in said layer so that its first and second faces are coated with said layer. The second face of said textile panel is advantageously waterproof.

[0072] Said layer in at least one polymer material can thus be pigmented in the mass by adding one or more pigments or dyes to the polymer prior to its application to said knitted textile panel.

[0073] Said layer in at least one polymer material can also be printed, in particular in the case of advertising media, for example by inkjet printing.

[0074] The layer in at least one polymer material optionally comprises polyvinyl chloride, and can be applied by squeegee to said textile panel. Depending on its application, the textile panel coated with said layer can be further coated on its first and / or second side with a plastic film. Detailed description of the drawings

[0075] There Figure 1A is a schematic representation of a first example of a knitting weave of a state-of-the-art textile panel; The Figure 1B is a schematic representation of a second example of a knitting weave of a state-of-the-art textile panel; The Figure 2A schematically represents the working diagram of the two mesh bars for a column of meshes of a first example of textile panel according to the invention; The figure 28 schematically represents the knitting weave of the first example of textile panel described in Figure 2A ; There Figure 3Aschematically represents the working diagram of the two mesh bars for a column of meshes of a second example of textile panel according to the invention; The Figure 3B schematically represents the knitting weave of the second example of textile panel described in Figure 2A ; There Figure 4A schematically represents the working diagram of the two mesh bars for a column of meshes of a third example of textile panel according to the invention; The Figure 4B schematically represents the knitting weave of the third example of textile panel described in Figure 4A ; There Figure 5A schematically represents the working diagram of the two mesh bars for a column of meshes of a fourth example of textile panel according to the invention; The Figure 5B schematically represents the knitting weave of the fourth example of textile panel described in Figure 5A ; There Figure 6Aschematically represents the working diagram of the two mesh bars for a column of meshes of a fifth example of textile panel according to the invention; The Figure 6B schematically represents the knitting weave of the fifth example of textile panel described in Figure 6A ; There Figure 7A schematically represents the working diagram of the two mesh bars for a column of meshes of a sixth example of textile panel according to the invention; The Figure 7B schematically represents the knitting weave of the sixth example of textile panel described in Figure 7A . Detailed description of the examples of realization

[0076] THE Figures 1A and 1B represent knitting armors 1,2 of state-of-the-art warp-knit textile panels. In these two weaves 1,2, each column of stitches 3,4 is obtained by knitting a single thread 5,6.Only one mesh bar is therefore required per column of mesh. Weft threads 7,8 are inserted through the stitches for each row of stitches so as to hold the columns of stitches together 3 on the one hand and the mesh columns 4 on the other hand. Knitting armors 1 And 2 represent three columns of stitches 3 And 4, and four rows of stitches respectively. The numbers of columns of stitches and rows of stitches have been determined arbitrarily for representation purposes. The needles are represented by dots.

[0077] There Figure 1A represents closed chain stitches while the Figure 1B represents open chain stitches. At the Figure 1A , the mesh thread 5turns around the needle in the open stitch pattern from left to right, then from right to left in the next row of stitches. In figure 18, the mesh thread 6 turns around the needle always in the same direction. We thus observe an imbalance between the feet of the stitches of two adjacent rows of stitches. The references 9 And 10 designate the movement of the bars supporting the mesh wires 5 And 6.

[0078] By way of non-limiting example, a state-of-the-art warp-knit textile panel obtained by implementing the knitting weave shown in Figure 1A or to the Figure 1B with a mesh thread of 50 dtex, a number of stitches in the warp direction of approximately 2,9 stitches / cm, and a weft thread of 167 dtex inserted in all rows of stitches, has a thickness of 168µm for a weight / m 2 < of 17 g / m 2< .

[0079] The first example of a warp knitted panel according to the invention whose knitting weave 11 is represented in the figure 28 comprises columns of stitches each of which comprises first stitches formed every other row with a first thread 12 and second stitches formed every other row of stitches with a second thread 13, the first stitches and the second stitches being alternated every other row of stitches and being in opposition. The first thread 12 and the second thread 13 each form stitches on every other row of stitches in an alternating manner. Thus, the first thread 12 will not form stitches every one in two rows of stitches, the same for the second thread 18. This arrangement contributes to the flatness of the textile panel. The meshes formed by the mesh threads 12 And13 are represented separately at the Figure 2B , but are arranged in the first example of knitted panel according to the column of stitches 14. The mesh thread 12 forms open chain stitches while the stitch yarn 13 forms closed chain stitches. The Figure 2A represents on the first column 15 the movement of the mesh bar supporting the mesh wire 12 for the formation of a specific column of stitches such as the column of stitches 14. The column 16 to the Figure 2A represents the movement of the mesh bar supporting the mesh wire 13 for the formation of said column of meshes determined as the column of meshes 14.Each stitch column of the first example of a warp-knitted panel thus comprises two stitch threads, unlike the prior art panels illustrated by the knitting weaves. 1 And 2 to Figures 1A and 1B in which each column of meshes is formed using only one mesh bar supporting one wire.

[0080] THE Figures 3A to 7A represent different variants of the movement diagrams of the mesh bars, for each of these diagrams, two mesh bars each supporting a mesh thread each form the mesh columns of the textile panels according to the invention.

[0081] To the Figure 3B , knitting armor 17 includes mesh threads 18 And 19 forming open chain stitches in opposition.

[0082] To the Figure 4B , the knitting tack 20includes mesh threads 21 And 22 forming closed chain stitches in opposition. At the Figure 5B , knitting armor 23 includes two mesh threads 24 And 25 forming open chain stitches in opposition.

[0083] Knitting armors 11,17,20 And 23 comprise first and second stitches extending only one column of stitches at a time so that weft threads 26 are necessary to assemble the mesh columns of the resulting textile panels and improve the mechanical resistance of said panels.

[0084] Knitting armors 27 And 28 represented at Figures 6B and 7B comprise second stitches formed with a second stitch yarn respectively 29 And 30extending over two adjacent columns of stitches and first stitches formed with a first stitch thread respectively 31 And 32 extending over only one column of stitches. The first stitch thread 31 forms open chain stitches in opposition to the knitted stitches formed by the second mesh thread 29. The second mesh thread 30 forms knitted stitches in opposition to the open chain stitches formed by the first stitch thread 32. When knitting armors 27 And 28 do not include weft threads, the connection between the columns of stitches is ensured by the second stitch threads 29 And 30 extending between two adjacent columns of mesh. The inventors nevertheless surprisingly observed that the arrangement of weft threads 33 And 34on the knitting weaves represented respectively in Figures 6B and 7B dotted line improves the shrinkage behavior of the resulting textile panel during heat treatment by combining it with a layer in at least one polymer material. Depending on the desired behavior of the composite material, weft threads can therefore be inserted in the weft direction.

[0085] In the examples shown in Figures 3B to 7B , the first threads 18, 21, 24, 31 and 32 on the one hand and the second threads 13, 19, 22, 25, 29 and 30 each form stitches on every other row of stitches in an alternating manner since the two bars stitch in an alternating manner.

[0086] In a specific example, cited without limitation, a warp-knit textile panel obtained by the use of any of the knitting weaves 11,17,20 Or 23 using first and second multifilament yarns of 25dtex each, a multifilament weft yarn of 167 dtex, has a thickness of the order of 115 µm for a weight / m 2 < of 11 g / m 2< . The textile panel according to the invention thus has a reduced thickness of 30% compared to the thickness of 168 µm of a state-of-the-art panel.

[0087] The implementation of the warp-knit textile panel thus obtained according to the invention in a manually breakable self-adhesive strip only requires approximately 33 g / m 2< of a layer in an adhesive polymer material against 45g / m 2< for a warp-knit textile panel of the state of the art. The regularity of the first and second faces of the textile panel according to the invention makes it possible, with equivalent mechanical resistance, to improve the surface condition of the textile panel and correlatively to reduce the quantity of the layer in at least one polymer material, in this specific example in self-adhesive polymer.

Claims

1. A composite material comprising a warp-knitted textile panel having wales (14) corresponding to the warp direction and courses corresponding to the weft direction, and first and second opposite faces, said first face being covered with a layer of at least one polymer material, each one of said wales (14) comprises first stitches formed on every other course with a first yarn (12, 18, 21, 24, 31, 32), and second stitches formed on every other course with a second yarn (13, 19, 22, 25, 29, 30), the first and second stitches being alternated on every other course and being in opposition, and said textile panel comprises weft yarns (26) inserted in the weft direction on every n out of p courses, n and p being integers, with n being less than or equal to p, said textile panel comprising first and second stitches which are chain stitches, and that extend along a wale (14), or said textile panel comprising first stitches which are chain stitches, and second stitches which are tricot stitches extending along at least two adjacent wales, and characterized in that said knitted textile panel is substantially plane.

2. The composite material according to claim 1, characterized in that the number of stitches in the warp direction of the textile panel lies in the range 1 stitch / cm to 25 knit stitches / cm.

3. The composite material according to one or other of the claims 1 and 2, characterized in that the number of stitches in the weft direction of the warp-knitted textile panel lies in the range 6 wales / inch to 46 wales / inch.

4. A composite material according to any one of the claims 1 to 3, characterized in that the first yarn, the second yarn, and the weft yarn, are multifilament yarns and / or monofilament yarns.

5. The composite material according to claim 4, characterized in that the first yarn, the second yarn, and the weft yarn, are selected independently from among: polyethylene terephthalate, polyamide 6-6, polyamide 4-6, polyamide 6, polyethylene, polyacrylic, polypropylene.

6. The composite material according to any one of the claims 1 to 5, characterized in that the first yarn, the second yarn, and optionally the weft yarn, have a fineness that is greater than or equal to 7 dtex and less than or equal to 3000 dtex, preferably greater than or equal to 10 dtex.

7. The composite material according to any one of the claims 1 to 6, characterized in that the layer comprises at least one polymer material selected from the list including: polyurethane; polyamide 6-6; polyamide 6; polyamide 4-6; polyvinyl chloride; a fluorinated polymer, such as polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF); ethylene-vinyl acetate (EVA).

8. A method of manufacturing a composite material according to any one of the claims 1 to 7, characterized in that it comprises the following steps: a) a step of knitting a warp-knitted textile panel having first and second opposite faces, and wales and courses, on a knitting machine having two guide bars, each respectively supporting a first yarn (12,18,21,24,31,32) and a second yarn (13,19,22,25,29,30) in order to knit each wale (14), the two guide bars working in alternation and in opposite directions so that each of said wales (14) comprises first stitches formed on every other course with said first yarn (12,18,21,24,31,32), and second stitches formed on every other course with said second yarn (13,19,22,25,29,30), the first and second stitches being alternated on every other course and in opposition, and said textile panel comprises weft yarns (26) inserted in the weft direction on every n out of p courses, n and p being integers, with n being less than or equal to p, b) a step of coating one of said faces of said textile panel in a layer comprising at least one polymer material, said textile panel comprising first and second stitches, which are chain stitches, and that extend along a wale (14), or said textile panel comprising first stitches which are chain stitches, and second stitches which are tricot stitches extending along at least two adjacent wales, and characterized in that said knitted textile panel is substantially plane.

9. A self-adhesive strip that is breakable manually in at least one direction, characterized in that it comprises a composite material according to claim 1, in that said layer comprises at least one self-adhesive polymer material, and in that the second face of said knitted textile panel, optionally covered with said layer, is covered with a plastic film.

10. A strip of interlining, characterized in that it comprises a composite material according to any one of the claims 1 to 7, and in that said layer comprises at least one thermofusible polymer material.

11. A strip of interlining, characterized in that it comprises a composite material according to any one of the claims 1 to 7, and in that said layer comprises at least one self-adhesive polymer material.

12. A protective cover, an advertising medium, a luggage cover, a roofing element, characterized in that it comprises a composite material according to any one of the claims 1 to 7, and in that said layer comprises at least one polymer material that is resistant to abrasion, in that the textile panel is embedded in said layer so that its first and second faces are covered with said layer, and in that the second face of the textile panel is water-proof.

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