Composite material

Abstract

The invention relates to a composite material (10) consisting of at least one textile layer (12, 20) and a polymer layer bonded to it. According to the invention, the textile layer (12, 20) consists of at least two textile materials with different physical properties, wherein the first textile material is arranged in at least one first section (16; 22) and the second textile material is arranged in several second sections (18; 24), wherein the desired physical mixing property of the two textile materials in the composite material (10) is achieved by the distribution of the first and second sections (16, 18; 22, 24) over the surface of the composite material (10).

Description

[0001] The present invention relates to a flat composite material used for a wide variety of purposes, such as, for example, as a convertible top material, particularly for functional and technical applications such as insulating, dampening, reflective, shaping, and protective functions. Depending on the intended use, a wide variety of requirements are placed on the material. For example, the material should be weather-resistant, lightfast, and resistant to soiling on the outside. On the inside, the convertible top material should have good thermal and sound insulation properties and also an attractive appearance. Low wrinkling tendency, low delamination, high temperature resistance (high and low), flame retardancy, compliance with emission requirements, abrasion resistance, high resilience, low basis weight, and the like are further requirements for such materials.Such a material is usually designed as a laminated hybrid with an outer textile layer and a polymer layer connected to it.

[0002] There is a need to design a sheet-like composite material of the above-mentioned type with different physical and functional properties over its surface, since sometimes different requirements are placed on different sections of this composite material, for example fastening area and cantilevered or span areas.

[0003] It is therefore an object of the invention to create a flat composite material that takes into account different functional requirements on different sections of its surface.

[0004] This object is achieved by a composite material according to claim 1. Advantageous developments of the invention are the subject of the dependent claims. Advantageous developments of the invention are also discussed in the description and the drawings.

[0005] The sheet-like composite material according to the invention consists of at least one textile layer and a polymer layer bonded thereto. According to the invention, the textile layer consists of at least two textile materials with different physical properties, wherein the first textile material is arranged in at least one first section and the second textile material is arranged in several second sections. A desired physical blending property of the two textile layers in the composite material is achieved by distributing the first and second sections over the surface of the composite material.

[0006] The surface area between the two textile materials with different functional or physical characteristics can, for example, vary evenly across the surface, as in a checkerboard pattern, or it can vary gradually in a transition area from a first surface area to a second surface area in the composite material. In the former case, a mixed property of the two different textile materials can be realized over the entire surface of the composite material. In the latter case, the surface area of ​​a first textile material can be significantly higher than the surface area of ​​a second textile material in a first section and vice versa in a second section. This means that in the first section the property of the first textile material dominates, while in the second section the properties of the second textile material dominate.The change in the area proportion can occur abruptly or, as described above, via a transition area, so that the change from the property dominated by the first textile material to the property of the second textile material can be smooth in a transition area.

[0007] If the two textile materials are knitted, they are knitted together in a single manufacturing process. The preferred shape of the knitted areas could be as follows: A first textile material A is formed by a thick knitted fabric. This thick knitted fabric is achieved through various parameters such as more or thicker thread material, double-layered or multi-layered knitting, tuck, offset or plating reinforcement, and volume-enhancing pile and filling threads.

[0008] A second textile material B is formed by a thinner knit compared to textile material A. The thin knit is achieved through different parameters such as fewer or thinner thread materials, single-layer knitting, finely tufted stitches, and double strength.

[0009] The result of the combination of textile materials A and B is a slight, moderate, or more pronounced high / low effect, depending on the combined parameters. The thick areas can increase the strength, stiffness, and structure of the thin areas. The thick / thin combination achieves an even stress distribution.

[0010] Optionally, a third textile material C can be provided in this embodiment, which exhibits high flexibility. This flexible knit is achieved through various parameters such as defined elastic thread material with varying stretch, resulting in larger stitches, double strength with material changes, and partial catching for elasticity control. A fourth textile material D, formed from a rigid knit, can act as a functional counterpart to the third textile material C. The rigid knit is achieved through various parameters such as thread material with a recovery effect, adhesive properties or memory function, a complex stitch structure with double strength, and a double-surface with stitch transfer.

[0011] The result of combining the third and fourth textile materials C and D can vary depending on the combined parameters – rigid knitted sections provide increased strength and rigidity, while elastic knitted sections absorb deformation and reduce stress. Alternatively, elastic knitted sections allow for increased flexibility, while rigid knitted sections stabilize the structure and limit deformation. Elastic textile materials can also deform under high loads but return to their original state when the load is released. Rigid textile materials have no deformability and retain their shape even under load. A combined elastic / rigid knitted fabric can be used for structures with a certain degree of flexibility that also exhibit high stability and resilience.By combining elastic and rigid materials or structures, certain properties can be enhanced.

[0012] If a textile material has a correspondingly stiff structure and optionally the polymer layer also has a certain stiffness, with appropriate shaping of the composite material even load-bearing structures can be created, which can be used as a replacement for metal structures, for example in the automotive sector.

[0013] In the above example with the four different textile materials, a fifth textile material E, which is designed as a smooth textile material, can optionally be used. The "smooth" knitted fabric is achieved through various parameters such as smooth thread material, homogeneous weaves, fine / tight stitches with double strength, and stabilizing stitch transfer over a double surface.

[0014] This fifth textile material can in turn be paired with a sixth textile material F, which is more strongly structured than the fifth textile material. The structured knit is achieved through various parameters such as structured thread materials, defined fiber hybrids, double strength, combinations of fine / coarse stitches, double-layered stitch transfer, and weave effects, including tuck / pile.

[0015] The result of combining the fifth and sixth textile materials E and F is multifaceted, depending on the combined parameters, and can create a visually appealing contrast between smooth, uniform textile structures and textured, deep-effect textiles. Partial integration of textured textile materials as relief effects, binding effects, and patterning effects can create visual and tactile objects. Textured areas, for example, can exhibit increased elasticity or strength, while homogeneous surfaces exhibit higher tension.

[0016] Of course, the six exemplary textile materials A to F can be combined with each other in any desired form and geometries from defined materials and manufactured, i.e. knitted, in one manufacturing process.

[0017] Referring to the above embodiment, the two textile materials in the textile layer in a composite material can also be formed only by the first and second textile materials A and B or only by the third and fourth textile materials A and B or the fifth and sixth textile materials A and B.

[0018] In principle, it's not necessary to combine textile materials with opposing properties, such as thick versus thin. Textile materials can be combined that realize their own functional aspects, such as elasticity, structure, or electrical conductivity—functions that have nothing to do with each other. Of course, an odd number of textile materials can also be used, such as three or five.

[0019] It can be advantageous if the shape of the textile material is accompanied by a corresponding shape of the polymer layer. For example, if one of the two textile materials is thin and permeable, it can be advantageous to also make the polymer layer thin and possibly even perforated in this area to achieve a certain climate function.

[0020] The same applies to flexible and rigid sections of the textile materials. Here, too, the polymer layer can be precisely shaped into more flexible and more rigid sections, e.g., by local UV or heat treatment, to match the sections of the two textile materials in the textile layer.

[0021] In principle, the first textile material can be a knitted fabric with more material, coarser or looser stitches. The first textile material can, for example, feature a tuck reinforcement, a stitch transfer, a pile thread, or a filler thread. To achieve greater density or volume, it can be double-knitted.

[0022] The second textile material can be thinner than the first, e.g. with less material and / or finer and / or tighter stitches and in particular knitted in one layer.

[0023] By distributing the first and second textile materials across the entire surface of the composite material, the flexibility and rigidity, as well as other properties of the composite material, can be controlled. For example, fine / coarse mesh, tight / loose mesh, single-surface, and double-surface mesh distribution can be adjusted. If more rigid sections of the second textile material are to be incorporated into the composite material, a resilient material, a finer mesh, or a tighter mesh can be used.

[0024] The structure of the composite material can also be controlled as desired by the surface area of ​​the first and second textile material, for example if the first textile material is smoother and the second more structured.

[0025] Since the area ratio of the first and second textile materials, as well as the size of the first and second sections, can vary across the composite material, a composite material with any desired properties can be created at different locations. The distribution of the first and second textile materials thus enables a defined "mix" of different weave structures and / or materials in any desired contour / design.

[0026] In general, the following physical or functional properties can be controlled by the distribution of the two textile materials over the entire surface of the composite material: elasticity, tensile strength, stiffness, sound insulation, thermal insulation, electrical conductivity, lightfastness, volume, density, color, without being limited to these selections.

[0027] In principle, the two textile materials can consist of the same fabric type, such as woven, knitted, or warp-knitted. However, it is also possible, especially with blended textiles such as woven and knit fabrics, to vary the woven and knitted content of the two textile materials.

[0028] It is also possible to distribute more than two textile materials, e.g. three or four textile materials, over the surface of the composite material if one wants to distribute more than two physical or functional properties in a desired manner over a surface.

[0029] Preferably, the first and second sections have a size of at least 10 cm 2, which is simpler and faster to manufacture than smaller sections, especially if they are arranged alternately. However, it is also possible in principle to arrange the at least two textile materials alternately in smaller sections, e.g., in a checkerboard pattern or as a dense distribution of small round or square sections of the second textile material, which are distributed in the desired manner within a one-piece, continuous first section of the first textile material.

[0030] Accordingly, in an advantageous embodiment of the composite material according to the invention, the second sections are arranged as insular regions within a continuous first section. The area ratio of the first section to the second sections can thus be adjusted as desired by adjusting the size and spacing. The distribution of the insular regions can be regular, varying in a controlled manner, or even random.

[0031] As already described above, the first and second sections are preferably arranged alternately, e.g. in the manner of a checkerboard pattern, which allows the distribution of the two textile materials over the surface to be easily adjusted.

[0032] Preferably, the composite material contains regions in which the mutual area ratio and / or size ratio and / or the mutual arrangement of the two sections differs from one another. Preferably, at least one transition region is formed between these two regions, in which the area ratio and / or size ratio and / or arrangement of the two sections gradually change toward one another. This is generally gentler on the composite material than if the transition between such two different regions runs along a hard edge, where the textile material can, for example, bend or break more easily.

[0033] Preferably, the polymer layer is formed in a coating process, preferably in an extrusion or laminating process, in particular applied to a textile layer.

[0034] The polymer layer can be bonded to the textile layer using a hot-melt process, by extrusion, or by a coating process. A polymer layer can be any plastic, rubber, or silicone layer that imparts a desired property, such as waterproofing, to the textile layer.

[0035] There are various ways to coat textile layers with a polymer layer, which is why these are not listed in detail here but only briefly outlined.

[0036] Depending on the type of polymer layer and the application, the coated textiles can have various properties, such as water-repellent, breathable, heat-resistant or reflective.

[0037] The polymer layer can also be applied as a laminate coating and can serve various functions, such as improving water resistance, increasing tear resistance, or achieving a specific appearance. They are used in various sectors, such as the clothing industry, automotive engineering, and medical technology.

[0038] The polymer layer can also be applied to the textile layer by lamination. In this process, the polymer layer, e.g., a layer of plastic film, is permanently bonded to the textile layer. This is usually done through heat and pressure treatment or the use of adhesives.

[0039] Lamination is often used to make textiles water-repellent or waterproof, or to add strength and durability. It is used in various sectors, such as the clothing industry, tent and tarpaulin manufacturing, the automotive industry, and construction.

[0040] Preferably, the thickness of the polymer layer is between 500 µm and 10 mm, which has proven advantageous in imparting to the composite material the physical properties targeted by the polymer layer.

[0041] If the textile layer and the polymer layer are based on a single polymer type, a single-material composite material can be achieved that can be disposed of or recycled more easily and in an environmentally friendly manner.

[0042] In an advantageous development of the invention, a second textile layer is arranged on the side of the polymer material opposite the textile layer, resulting in a triple composite material that is particularly advantageous for higher loads, e.g. in tent fabrics, larger tarpaulins and convertible top materials, in particular convertible top materials. In addition, different properties can be achieved on both sides of the polymer layer by appropriately selecting the two textile layers. For example, the first textile layer can be highly tear-resistant, UV-resistant and colorfast, while the other side can have good sound insulation and attractive optical properties. The first textile layer then forms the outside of a convertible top, while the second textile layer forms the inside.

[0043] Thus, the second textile layer is preferably made of a nonwoven, woven, knitted or crocheted fabric, in particular a pile thread knit, which can have a high volume and be designed to be attractive in its appearance.

[0044] In an advantageous development of the invention, the second textile layer, like the first textile layer, consists of at least two textile materials with different physical properties, wherein in the second textile layer a first textile material is arranged in at least one first section and a second textile material is arranged in a plurality of second sections, wherein a desired physical mixing property of the two textile materials in the second textile layer is achieved by distributing the first and second sections over the surface of the composite material.

[0045] Preferably, the first textile material of the second textile layer is identical to the first textile material of the (first) textile layer, and the second textile material of the second textile layer is identical to the second textile material of the (first) textile layer. In this way, a three-layer composite material can be realized with a reduced number of different materials. The distribution of the first and second textile materials in the first textile layer can nevertheless differ from the distribution in the second textile layer, so that, despite identical textile materials, different properties can be realized in the two textile layers through the ratio and arrangement of the two textile materials.

[0046] Preferably, the textile layer and / or the polymer layer of the composite material are plasma-treated on their mutually facing bonding sides in order to improve mutual adhesion.

[0047] The invention also relates to a convertible top, in particular a convertible top, comprising a supporting frame and a composite material applied thereto as described above.

[0048] The embodiments of the invention described above can be combined with each other as desired, as long as embodiments do not exclude each other in their realization.

[0049] The textile layer in the two-layer composite material corresponds to the first textile layer in the three-layer composite material.

[0050] The invention is described below, for example, with reference to the schematic drawing, which shows: Fig. 1 a cross-section through a two-layer composite material in a first embodiment of the invention, Fig. 2 a cross-section through a three-layer composite material in a second embodiment of the invention, Fig. 3 a cross-section through a three-layer composite material in a third embodiment of the invention, Fig. 4 a supervision IV of the Fig. 1 to 3 on the first textile layer with checkerboard-like arranged first and second sections, Fig. 5 supervision in accordance with Fig. 4, in which the second sections are formed as singular structures in a coherent first section, Fig. 6 supervision in accordance with Fig. 5, in which the arrangement of the singular second sections changes from a first size and density via a transition region to a second size and density, Fig. 7 supervision in accordance with Fig. 5, where sections in the arrangement of the Fig. 5 with different textile materials are arranged singularly in the textile layer, and Fig. 8 the realization of the embodiment of the composite material according to Fig. 4, applied to a central area of ​​a convertible top.

[0051] Fig. 1 shows a section through a sheet-like composite material 10 according to the invention, consisting of a textile layer 12 and a polymer layer 14 bonded thereto. The thickness of the polymer layer 14 can be constant or vary, depending on the intended use.

[0052] The textile layer 12 consists of an alternating sequence of first sections 16, in which a first textile material is used, and second sections 18, in which a second textile material is used. Possible arrangements of this alternating sequence are shown in the top views of the Fig. 4 to 6 are described in more detail.

[0053] The two textile materials in Sections 16 and 18 differ in their physical characteristics and thus in their function for the composite material. The physical characteristics of the textile materials in the respective Sections 16 and 18 may relate to elasticity, tensile strength, stiffness, sound insulation, thermal insulation, electrical conductivity, lightfastness, bulk, density, or color, although this list is not exhaustive.

[0054] In this way, the proportion of the two sections 16, 18 in the area of ​​the textile layer 12, their arrangement and their size allow the mixing property of a composite material to be composed as desired from the properties of the two textile materials.

[0055] The number of textile materials and corresponding sections in the textile layer 12 is not limited to two, but can also be higher, resulting, for example, in an arrangement of three sections as in Fig. 7 could result.

[0056] Fig. 2 shows a composite material 10a in which a second textile layer 20 is applied to the side of the polymer layer 14 facing away from the textile layer 12, which second textile layer 20 can have an independent design and can differ from the two textile materials in the two sections 16, 18 of the textile layer 12. If the composite material is used for a convertible top, for example, the second textile layer 20 can be intended for the outside and have high tear resistance, light fastness and water resistance, while in the textile layer 12 facing the interior, the textile material in the first section 16 can be designed for heat and sound insulation, for example, while the textile material in the second sections 18 is used for color design, e.g. also as a light-guiding textile with optical fibers.

[0057] In the third embodiment of the composite material 10b in Fig. 3, the second textile layer 20a is constructed in the same way as the textile layer 12. It consists of a first textile material arranged in second sections 22 of the second textile layer 20 and of a second textile material arranged in second sections 24 of the textile layer 20, wherein the two sections 22, 24 are arranged alternately, for example as in the Fig. 4 to 6. The number of textile materials and corresponding sections in the second textile layer is not limited to two, but can also be higher, resulting, for example, in an arrangement of three sections as in Fig. 7. The first and second textile materials in the first and second sections 22, 24 of the second textile layer 20 can of course correspond to the first and second textile materials in the first and second sections 14, 16 of the textile layer 12.

[0058] Ultimately, the arrangement and composition of different sections 22, 24 made of different textile materials in the second textile layer also makes it possible to achieve a desired mixed property from the functions or physical characteristics of several textile materials.

[0059] Fig. 4 shows the arrangement of the first and second sections 16, 18 in the textile layer 12 of the Fig. 1 to 3, or the arrangement of the first and second sections 22, 24 in the second textile layer 20. The checkerboard pattern arrangement of the different sections 15, 16 and 22, 24, respectively, achieves a desired mixing property of the textile materials used in the sections homogeneously over the surface of the composite material 10.

[0060] Fig. 5 shows a Fig. 4 Alternative arrangement of the sections 16, 18 and 22, 24 over the surface of the composite material 10. Here, the first section 16 (22) is designed as a basic structure, in which the second sections 18 (24) are then embedded as singular structures uniformly or in any desired arrangement. This arrangement of the sections is particularly advantageous when the basic physical property is to be realized by the continuous first section 16 (22), and a physical function is to be introduced to the desired extent by the second sections 18 (24) through a second textile material. This arrangement illustrates that the area ratios of the first and second sections in both textile layers 12, 20 can be selected largely arbitrarily.

[0061] While the Fig. 4 and Fig. 5 show a homogeneous distribution of the two sections 16 and 18 (22 and 24) over the surface of the (second) textile layer 12 (20), Fig. 6 illustrates an embodiment in which the area ratio is changed from a constant value in the left-hand region 26 to a different constant area ratio in the right-hand region 28. This change does not occur discretely, but rather in an intermediate transition region 30.

[0062] In all three areas 26, 28, and 30, the basic structure is determined by the first section 16 (22). What changes in areas 26, 28, and 30 is only the distribution and size of the second (fourth) sections 18 (24) in the first section 16 (22), and thus the overall functionality resulting from the area ratios of the two textile materials.

[0063] In the transition area, the size of the second sections changes from the larger initial size of the second (fourth) sections 18a (24a) in the first area 26, e.g. from 10 cm 2 to the small output size of the second (fourth) sections 18b (24b) in the right area 28.

[0064] In the transition area, the size of the second sections 18 changes from the larger size of the sections 18a (24a) in the left area 26 in three stages 17a, 17b, 17c to the smaller size of the second sections 18b (24b) in the right area 28. The advantage of this "soft" transition is the avoidance of physical stresses (e.g. kinking) or thermal stresses (condensation or dirt accumulation), which are inherent in sharp line transitions.

[0065] Finally, Fig. 7 supervision in accordance with Fig. 5, with the difference that here three different sections 16, 18, 32 or 22, 24, 32 are arranged over the surface of the (first) textile layer 12 or the second textile layer 20. In the third sections 32, a third textile material with a third physical property is formed, which differs from the physical properties of the two other textile materials in the first and second sections 16, 18 (22, 24). In the three sections 16, 18, 32 or 22, 24, 32 there are three assigned different textile materials with different physical characteristics and correspondingly different functions. Here, any desired mixture of three different functions can be realized through the arrangement and surface distribution of the three sections 16, 18, 32 or 22, 24, 32 over the surface of the composite layer 10.Needless to say, more than three sections with a corresponding number of different textile materials can of course be provided.

[0066] Finally, Fig. 8 shows the application of the composite material according to the invention on a convertible top 40 with a surrounding piping 42 and a recessed cutout 44 for a rear window.

[0067] The composite material 10 of the convertible top consists of a front and rear section 16a, 16b made of a base textile i, e.g., a water-repellent, lightfast, and highly resilient outer fabric, e.g., made of PE fibers. In a central region 46 of the convertible top, an alternating arrangement of two sections 16 and 18 or 18 and 32 is arranged in a checkerboard pattern according to Fig. 4 arranged.

[0068] In the alternating arrangement, one of the materials can correspond to the basic textile structure in sections 16a and 16b, so that only in sections 18 a different textile material, e.g. a fabric with polyamide or aramid admixtures, is arranged, which imparts greater rigidity to this area of ​​the convertible top. Alternatively, both sections 18 and 32 in the checkerboard arrangement can consist of two materials that differ from the textile material of the basic structure 16a, 16b, in which case, for example, a stiffer fabric can be used in sections 18 of the checkerboard pattern, whereas an extremely smooth fabric is used in sections 32 of the checkerboard pattern to reduce wind resistance.

[0069] The ratio of the thickness of the textile layer 12 or the two textile layers 12, 20 to each other and / or to the thickness d of the polymer layer 16 may differ greatly from the schematic drawing shown.

[0070] It will be obvious to a person skilled in the art that the application is not limited to the embodiments described, but may be varied within the scope of the appended claims. List of reference symbols: 10 flat composite material 12 textile layers 14 polymer layer 16 first section(s) of first textile material 16a front area of ​​a convertible top with base textile material 16b rear area of ​​a convertible top with base textile material 17a first size and arrangement of the second sections in the transition area 17b second size and arrangement of the second sections in the transition area 17c third size and arrangement of the second sections in the transition area 18 second sections made of second textile material 18a defined first area portion, size and arrangement of the second sections to the first section in a first area of ​​the composite material 18b defined second area portion, size and arrangement of the second sections to the first section in a second area of ​​the composite material 20 second textile layer on the opposite side of the polymer layer 22 first section(s) of first textile material in the second textile layer 24 second sections of second textile material in the second textile layer 26 first area with defined area ratio of the first section to the second sections 28 second area with a defined area ratio of the first section to the second sections that differs from the first area 30 Transition area between the first and second area 32 third sections of a third textile material in the first and / or second textile layer 40 convertible top 42 surrounding piping of the convertible top 44 Window cutout of the convertible top 46 Central area of ​​the convertible top with checkerboard arrangement of two different sections of the textile layer and / or second textile layer

Claims

[1] Composite material (10) consisting of at least one textile layer (12, 20) and a polymer layer bonded thereto, characterized by in that the textile layer (12, 20) consists of at least two textile materials with different physical properties, wherein the first textile material is arranged in at least one first section (16; 22) and the second textile material is arranged in a plurality of second sections (18; 24), wherein a desired physical mixing property of the two textile materials in the composite material (10) is achieved via the distribution of the first and second sections (16, 18; 22, 24) over the surface of the composite material (10). [2] Composite material (10) according to claim 1, characterized by that the two textile materials differ in the following physical properties: elasticity, tensile strength, stiffness, sound insulation, thermal insulation, electrical conductivity, lightfastness, volume, density, color. [3] Composite material (10) according to one of the preceding claims, characterized by that both textile materials consist of the same textile type, such as woven, knitted or warp-knitted fabric. [4] Composite material (10) according to one of the preceding claims, characterized by that the first and second sections (16, 18; 22, 24) have a size of at least 10 cm 2 have. [5] Composite material (10) according to one of the preceding claims, characterized by that the second sections (18; 24) are arranged as insular regions in a continuous first section (16; 24) of the textile layer (12; 20). [6] Composite material (10) according to one of claims 1 to 4, characterized by that the first and second sections (16, 18; 22, 24) are arranged alternately, e.g. in the manner of a checkerboard pattern. [7] Composite material (10) according to one of the preceding claims, characterized bythat the thickness (d) of the bonding layer is between 500 µm and 10 mm. [8] Composite material (10) according to one of the preceding claims, characterized by in that regions (26, 28) are arranged in the composite material (10) in which the mutual area ratio and / or size ratio and / or the mutual arrangement of the two sections (16, 18) deviates from one another, wherein at least one transition region (30) is formed between these two regions (28, 28), in which the area ratio and / or size ratio and / or arrangement of the two sections (16, 18; 22, 24) changes gradually towards one another. [9] Composite material (10) according to one of the preceding claims, characterized by that a second textile layer (20) is arranged on the side of the polymer material (14) opposite the textile layer (12). [10] Composite material (10) Claim 9, characterized bythat the second textile layer (20) is formed from a nonwoven, woven, knitted or crocheted fabric, in particular a pile thread knit. [11] Composite material (10) according to claim 9 or 10, characterized by in that the second textile layer (20), like the first textile layer (12), consists of at least two textile materials with different physical properties, wherein in the second textile layer (20) a first textile material is arranged in at least one first section (22) and a second textile material is arranged in a plurality of second sections (24), wherein a desired physical mixing property of the two textile materials in the second textile layer (20) is achieved via the distribution of the first and second sections (22, 24) over the surface of the second textile layer (20) of the composite material (10). [12] Composite material (10) according to claim 11, characterized bythat the first textile material in the second textile layer (20) is identical to the first textile material in the textile layer (12), and that the second textile material in the second textile layer (20) is identical to the second textile material in the textile layer (12). [13] Composite material (10) according to one of the preceding claims, characterized by that the polymer layer (14) is formed in a coating process, preferably in an extrusion or laminating process, in particular applied to a textile layer (12; 20). [14] Composite material (10) according to one of the claims, in which the textile layer (12; 20) and the polymer layer (14) are based on a single type of polymer. [15] Composite material (10), in which the textile layer (12; 20) and / or the polymer layer (14) are plasma-treated on their connecting side in order to improve mutual adhesion. [16] Top, in particular a convertible top (40), comprising a supporting frame and a composite material (10) applied thereto according to one of the preceding claims.

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