Reinforced composite materials
The reinforced composite material with parallel strips and a flexible sheet addresses the over-engineering of geogrids by ensuring directional strength and improved adhesion, enhancing structural stability and reducing installation complexity.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2026-03-10
AI Technical Summary
Existing reinforced composite materials, such as geogrids, provide unnecessary tensile strength in both directions, leading to over-engineered and costly solutions, and fail to maintain adhesion to the ground, resulting in potential loosening and slippage, especially in applications requiring strength in a single direction.
A reinforced composite material comprising parallel strips bonded to a flexible sheet with longitudinal channels and reinforcing fibers, lacking transverse connections, ensuring strength in the required direction and improved adhesion through a rough outer surface and pre-bonded structure for efficient installation.
The solution provides cost-effective, efficient reinforcement with enhanced adhesion to the ground, reducing material handling and installation time, while preventing slippage and ensuring structural stability.
Smart Images
Figure 2026508284000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to reinforced composite materials.
[0002] In particular, the invention relates to reinforced composite materials for the construction, civil, environmental, hydraulic, geotechnical and mining engineering sectors, and more generally for all applications where efficient soil reinforcement / containment is required.
[0003] The reinforced composite material referred to here is a flexible ribbon-like material in strip form, i.e., having a thickness that is much smaller than the other two dimensions. [Background technology]
[0004] Typically, reinforced composite materials used in the construction industry are defined by the use of reinforced strips, i.e. reinforced composite products in the form of strips (also called "straps" or "tapes" or "geostrips") typically obtained by co-extruding a coating capsule containing a core of inserts, wires, filaments or fibers with tensile strength properties.
[0005] In fact, by using high-strength wires, yarns and fibers, it is possible to obtain reinforcing strips that provide the necessary load resistance and bearing capacity, as well as greater durability than conventional construction methods and materials such as steel bars and concrete.
[0006] The strips are then typically combined in warp and weft fashion to form a mesh or grid (also called a "geogrid") which is then inserted into the ground to reinforce it, thus creating a retaining wall or embankment which is reinforced both internally and at its base.
[0007] However, applicant has realized that known types of geogrids have distinct limitations which, in some cases, may prevent or even preclude their use in certain types of applications.
[0008] In particular, known types of strips, always combined to form a grid, can only provide tensile strength in both directions (warp and weft). However, in applications such as retaining wall construction or cliff stabilization, geogrids are typically required to provide strength in the preferred direction (typically the warp direction opposite the laying direction). In fact, for embankment, cliff, wall, or slope stabilization, tensile strength in both directions is not strictly necessary. Rather, providing two directions of resistance can prescribe an over-designed or over-engineered solution as well as limit the tensile response in the required direction.
[0009] Since design engineering and standards typically consider one main direction of load and force distribution, one direction of tensile strength may be sufficient, and this one direction may ensure the stability of the structure in both the short and long term.
[0010] So, although the grid design allows for precise laying of reinforcement (as opposed to having to lay individual strips one by one), these geogrids are unnecessarily expensive, redundant, and heavy to handle.
[0011] The applicant also realised that geogrids alone have the disadvantage of being unable to perform any function other than structural reinforcement, and therefore the strips are often combined with sheets of different materials that perform different functions.
[0012] However, once laid, tension, loosening or slippage can often occur between the strips and sheets, and the soil is not properly stabilized / contained. In such cases, there is a very high risk of the reinforcement of the entire structure being compromised.
[0013] Applicant also found that in some applications additional stresses could be created between the soil and the reinforcing strips, which could disadvantageously cause the strips to move or even be pulled out of the ground.
[0014] The sheets that are inserted in contact with the ground in combination with the strips typically present a smooth outer surface and may be subject to loosening or slippage phenomena, which may severely compromise the strip reinforcement system. Summary of the Invention
[0015] In this context, the technical problem underlying the present invention is to propose a reinforced composite material that overcomes one or more of the drawbacks of the prior art mentioned above, providing a technical solution that is simple and cheap to manufacture, effective, efficient, convenient and reliable in use, and that can simplify the reinforcement work by improving its adhesion to the ground when installed.
[0016] The defined technical problem and the specified object are substantially achieved by a reinforced composite material having the technical features set out in one or more of the appended claims.
[0017] In particular, the present invention provides a reinforced composite material comprising at least one sheet made of a flexible material and a plurality of reinforced composite strips.
[0018] Each reinforcing composite strip is a plurality of longitudinal channels extending parallel to the longitudinal extension direction of said reinforced composite strip, the longitudinal channels being arranged in sequence between the opposite side edges of said reinforced composite strip, and a covering capsule surrounding the longitudinal channels; a plurality of longitudinal reinforcing fibers disposed within the longitudinal channels.
[0019] The reinforcing composite strips are bonded to the sheet at the underside of each of the envelope capsules such that their respective longitudinal directions of extension are parallel.
[0020] The reinforced composite material does not comprise further reinforced composite strips extending along respective longitudinal extension directions perpendicular to the longitudinal extension direction of the composite reinforcing strips.
[0021] In other words, all of the reinforcing composite strips are arranged parallel to one another so that they do not cross one another, and thus the parallel strips are adjacent to one another so that there is no contact between them.
[0022] In this way, the reinforced composite material of the present invention does not comprise a grid, and there are only parallel longitudinal reinforced composite strips, said reinforced composite strips not being connected by transverse or perpendicular strips.
[0023] The reinforced composite material according to the invention thus has strips arranged either weft-wise or warp-wise only, which can provide the necessary strength in the orientation required by the design, has less excess mass than known grids and therefore requires less material to be handled on site, while at the same time ensuring accurate positioning of the strips when they are bonded to the sheet and ensuring proper functioning of the composite material after installation.
[0024] The reinforcing strips are made integral with the sheet and are therefore advantageously held in place by the sheet, thus preventing relative movement between the strips and the sheet.
[0025] The strip orientation defined in the design advantageously determines the direction of reinforcement and eliminates field waste. Thus, the composite material can be placed parallel to the structure, rather than perpendicular as is the case with prior art geogrids or geostrips.
[0026] Obviously, a single sheet laid separately without being bonded to the strip would require a double bonding operation on-site, which would in any event potentially result in a discontinuous layer between the strip and the ground, but the present invention advantageously employs pre-packaged bonding, whereby the reinforced composite material is already "ready to use" to be laid and installed in place for efficient structural reinforcement.
[0027] Thus, the reinforced composite material of the present invention is already pre-bonded and ready to use for efficient performance, facilitating installation operations and reducing installation time.
[0028] Advantageously, the sheet of flexible material comprises a 3D structure of thread-like elements defining a plurality of cavities therebetween suitable for at least partially interpenetrating the ground in use.
[0029] In other words, the cavities interposed between the thread-like elements, especially those in the more superficial layers that define the outer surface of the sheet, are configured to receive a small portion of the soil when the material is installed and subsequently laid in contact with the soil (it is possible to determine the optimal shape and size of the cavities depending on the soil grain size), thus increasing the friction with the soil and improving the adhesion between the two elements and preventing them from slipping / loosening during the use cycle.
[0030] In other words, the sheet so produced is substantially defined by a rough outer surface which is suitable for being placed in frictional contact with the ground in use.
[0031] The cavities are actually open to the outside of the sheet and penetrate the soil in contact with it, creating friction.
[0032] The resulting reinforced composite material can be advantageously described as having "improved adhesion."
[0033] Furthermore, each of the reinforcing strips covering the capsules does not have a longitudinal channel opening on its upper surface. In other words, there is no fluid connection between the longitudinal channel and the upper surface of the covering capsule, so the capsule is not perforated with a longitudinal channel, and the reinforcing fibers are completely wrapped in the covering profile. In this way, the integrity of the reinforcing fibers can be efficiently maintained, preventing liquid seepage or contamination.
[0034] Advantageously, reinforced composite materials according to the present invention can be made in tape form and supplied in roll form to simplify transportation and installation operations.
[0035] The dependent claims, which are incorporated herein by reference, correspond to various embodiments of the invention. [Brief explanation of the drawings]
[0036] Further features and advantages of the present invention will become more clearly apparent from the indicative, and therefore non-limiting, description of preferred but not exclusive embodiments of a reinforced composite material, as illustrated in the accompanying drawings, in which: [Figure 1] 1 is a schematic perspective view of a reinforcing strip forming part of a reinforced composite material covered by the present invention; FIG. [Figure 1A] 2 is an embodiment of the reinforcing strip of FIG. 1 in which a surface relief is present; [Figure 2-3] 1 is a schematic cross-sectional view of a reinforced composite material according to the invention according to two embodiments. [Figures 2B-3A] 4A and 4B are two enlarged views of the sheets of FIGS. 2 and 3, respectively. [Figure 4-5] 1 is a schematic perspective view of a roll comprising reinforced composite tape according to two alternative embodiments of the present invention; DETAILED DESCRIPTION OF THE INVENTION
[0037] Referring to the accompanying drawings, a reinforced composite material is generally designated 100.
[0038] A reinforced composite material 100 according to the invention advantageously comprises at least one sheet 10, 20 of flexible material and a plurality of reinforced composite strips 1.
[0039] Thus, the reinforced composite material 100 referred to herein is a multi-layer material in the form of a sheet having a certain thickness, commonly referred to as a "geocover" or "geomembrane" or "geomat," suitable for placement in contact with soil, even in waterlogged conditions, to reinforce, protect, contain, and stabilize the soil.
[0040] With reference to FIG. 1 , it should be noted that the term “strip” is intended to denote a substantially flat, ribbon-like element having a length, measured along the longitudinal direction of development X of the strip 1, that is greater than the width of the strip 1 measured perpendicular to the longitudinal direction of development X, and a width that is much greater than the thickness of the strip 1, the thickness of the strip 1 being measured perpendicular to the longitudinal direction of development X and the width of the strip 1.
[0041] Preferably, the strip 1 has a width between 10 and 200 mm, more preferably equal to 85 mm.
[0042] The strip 1 has two opposite lateral ends 1a in a longitudinal direction of extension X and two opposite terminal ends 1b extending perpendicular to the longitudinal direction of extension X. In other words, the length of the strip 1 can be measured between the terminal ends 1b and the width can be measured between the lateral ends 1a.
[0043] The strip 1 comprises a coating capsule 2, for example a polymer matrix (for example LLPDE), surrounding a plurality of longitudinal channels 3 running parallel to the longitudinal direction X of the reinforcing strip 1 and arranged in sequence between opposite side edges 1a.
[0044] In other words, the longitudinal channels 3 are arranged adjacent to one another in sequence and parallel within the strip 1 and extend along the entire length A of the strip 1 .
[0045] The strip 1 advantageously comprises a plurality of longitudinal reinforcing fibres 3 a arranged in longitudinal channels 3 .
[0046] In particular, "plurality of longitudinal reinforcing fibers" 3a means a yarn or filament made of a plurality of fibers, strands, filaments or inserts having tensile strength properties and bonded together longitudinally to define a longitudinally extending reinforcing element.
[0047] Preferably, the longitudinal reinforcing fibres 3a are made of synthetic, polymeric, biopolymeric, natural or plant-based materials. Iron or metallic inserts can also be provided.
[0048] It should therefore be noted that the term "longitudinal" is intended to indicate that the fibers define yarns extending in a direction parallel to the longitudinal extension direction X of the strip 1.
[0049] According to possible embodiments not shown, the plurality of fibers can also be defined by yarns or threads formed from mixed structures or yarns or threads combined to form hybrid yarns / structures (which can improve the final performance of the strip itself).
[0050] Preferably, each channel 3 has a width, measured perpendicular to the longitudinal direction of development X of the reinforcing strip 1 and parallel to the width of the reinforcing strip 1, of between 0.5 mm and 100 mm, more preferably between 2 mm and 10 mm.
[0051] Preferably, the channels 3 have a thickness value, measured perpendicular to the longitudinal unfolding direction X of the reinforcing strip 1 and parallel to the thickness of the reinforcing strip 1, of between 0.1 mm and 20 mm, more preferably between 1 mm and 5 mm.
[0052] Preferably, the distance between successive longitudinal channels 3 is smaller than the width of the longitudinal channels 3 .
[0053] The coated capsule 2 has an upper surface 2a and an opposite lower surface 2b.
[0054] The coated capsule 2 does not have a surface opening on the upper surface 2a leading to the longitudinal channel.
[0055] Advantageously, the strips 1 are joined to the sheets 10, 20 at their respective lower faces 2b of the envelope capsules 2 so that their respective longitudinal directions of deployment X are parallel.
[0056] Preferably, the sheets 10, 20 may have one or more of the following functional properties: filtering, separating, draining, erosion resistance, containment, waterproofing.
[0057] Depending on the functional type of material the sheets 10, 20 are made of, it can be defined as a geotextile (preferably PP with needle-punched threads), a geomat (preferably with a 3D structure), a geomembrane (preferably PE), a geodrain or a geocover (also geocements, GCCMs).
[0058] The lamination of the strips 1 to the sheets 10, 20 can be carried out according to one or more of the following manufacturing techniques: knitting, interweaving, bonding, sewing, interlocking, welding, gluing, heating, sewing, spraying.
[0059] In both cases, the term "bonded" means that the strip 1 is made integral with the sheets 10, 20 and is irreversibly connected, i.e. the strip 1 is completely attached to the sheets 10, 20 at their respective lower faces 2b (therefore there is no overlap, as is the case with known grids).
[0060] It should be noted that advantageously, the present invention does not require additional reinforcing strips arranged perpendicular to the parallel strips 1, facilitating the manufacture of the composite material 100 and increasing its production speed.
[0061] Advantageously, the sheets 10, 20 of flexible material comprise a 3D structure of thread-like elements defining between them a plurality of cavities 12, 22 suitable for at least partially interpenetrating the ground in use.
[0062] In other words, the cavities 12, 22 interposed between the thread-like elements 11, 21, in particular the more superficial cavities 12, 22 defining the outer surface of the sheets 10, 20, are configured to accommodate a small portion of the soil when the material 100 is installed and then laid in contact with the soil (it is possible to determine the optimal shape and size of the cavities 12, 22 depending on the grain size of the soil), thereby increasing friction with the soil and improving the adhesion between the two elements and preventing them from slipping / loosening during the use cycle.
[0063] In other words, the sheet 10, 20 thus produced is substantially defined by a rough outer surface suitable for being placed in frictional contact with the ground in use.
[0064] The cavities 12, 22 are actually open to the outside of the sheets 10, 20 and are interpenetrated in contact with the ground to create friction.
[0065] The 3D structure of the thread-like elements 11, 21 ("thread-like elements" is intended to mean threads, fibers, or filaments) can be twisted, knotted, or entangled in an orderly or random / irregular manner.
[0066] The sheet 10, 20 made of flexible material can therefore be defined as a so-called "cover", i.e. a three-dimensional structure of thread-like elements 11, 21, having a prevalent developed dimension relative to the other elements (i.e. the sheet) and presenting a rough outer surface (i.e. rough, i.e. not smooth or uniform to the touch, i.e. presenting wavy or jagged, i.e. presenting an irregular / non-homogeneous series of protrusions and depressions defined by the contours of the threads themselves and / or their intertwining). The rough outer surface therefore advantageously increases the surface friction of the reinforced composite material 100.
[0067] Therefore, the surface of the cover when in contact with the ground is a friction surface, improving adhesion to the ground and preventing slipping and loosening when installed.
[0068] The resulting reinforced composite material 100 is advantageously reinforced and can be described as having "improved adhesion."
[0069] Thus, the reinforced composite material 100 can be advantageously used to prevent cliff or retaining wall erosion phenomena and flat subsidence.
[0070] FIG. 2 shows a first possible embodiment of a sheet 10 that can be used to manufacture a material 100 according to the invention, preferably a 3D structure of thread-like elements formed of a layer 11 of textile material having a plurality of rings 11a of protruding filaments (see the enlarged view in FIG. 3A) that define a plurality of cavities 12 between them.
[0071] In particular, the rings 11a may be defined by filaments drawn from the layer 11 of textile material (obtained according to known drawing techniques) or may be made of additional filaments interwoven with the textile structure to define loops, flounces or bridging threads. Furthermore, the additional filaments may be made of non-textile material.
[0072] In other words, the sheet 10 has a base layer (i.e., a layer of textile material 11) with interwoven filaments and a plurality of perforated rings 11a protruding from the base layer, the perforated rings 11a defining cavities 12 therebetween and creating a rough surface that generates friction with the ground and improves adhesion of the reinforcement system.
[0073] 3 shows a second possible embodiment of a sheet 20 that can be used to manufacture the material 100 according to the invention, preferably a 3D structure of thread-like elements made of entangled synthetic filaments 21, for example made of polypropylene (see the enlarged view of FIG. 2A), more preferably made by spraying, extrusion or additive manufacturing methods, with cavities 22 defined between the entangled synthetic filaments 21.
[0074] One example of such a sheet 20 is a so-called "geomat," i.e., a three-dimensional structure of highly deformable polypropylene monofilaments with a high degree of porosity (typically about 90% or more). Geomats are a long-term solution that can address erosion control problems in both dry and wet environments. Geomats can protect slopes from erosion caused by rainfall and flowing water from streams or rivers.
[0075] By bonding the reinforcing strips 1 to the geomat, it is possible to obtain a so-called "reinforced geomat", which ensures a uniform distribution of forces between the individual strips when the composite is subjected to load or stress, thus improving its strength properties. As the load is supported by the strips 1 and not transmitted to the geomat, the geomat is not subject to breakage / tear phenomena.
[0076] Preferably, according to an embodiment not shown in the accompanying drawings, the reinforcing strips 1 can be at least partially embedded in the sheets 10, 20. The sheets 20 can be produced, for example, by spraying the synthetic filaments 21 directly onto the parallel-arranged strips 1 and at least partially embedding them, so as to form a layer of entangled synthetic filaments 21 with a plurality of cavities 22 and in which the strips 1 are enclosed.
[0077] Preferably, as shown in the exemplary embodiment of Figure 1A, on the upper surface 2a of each coated capsule 2, opposite the lower surface 2b bonded to the sheet 10, a surface relief 7 is formed having a main direction of development parallel to the longitudinal direction of development X of the reinforced composite strip 1. In particular, each surface relief 7 extends at least partially between the opposing terminal ends 1b of the reinforced composite strip 1.
[0078] In other words, the relief is oriented parallel to the direction X. Advantageously, this simplifies the manufacturing process: for example, if the strip is manufactured using extrusion techniques, the relief is parallel to the extrusion direction.
[0079] Advantageously, the creation of these surface reliefs, preferably by molding, punching, marking or embossing, improves the frictional and anti-creep performance of the strip when placed on the ground in use, increases its resistance to loosening (the so-called "pull-out" phenomenon) and improves its frictional efficiency. Thus, due to the presence of the reliefs 7, the composite material 100 exhibits improved adhesion properties both to the sheets 10, 20 (cavities 12, 22) and to the strips 1.
[0080] The presence of the surface relief 7 therefore makes it possible to improve the adhesion properties of the strip 1 to the ground and ensures good maintenance of the composite material 100 after installation, i.e. when the strip 1 is sunk into the ground.
[0081] Advantageously, the cross section of the surface relief 7 can be selected according to requirements and design preferences, and can for example be formed as a circle or a rectangle, although it is triangular in the accompanying drawings.
[0082] The choice of shape of the relief 7 is advantageously configured according to the morphology of the ground on which the reinforcing strip 1 acts.
[0083] Preferably, each strip 1 comprises a number of reliefs between 1 and 100, and more preferably a number equal to 10.
[0084] Each relief 7 has a height, measured perpendicular to the upper surface 2a of the coated capsule 2, that is smaller than the thickness of the coated capsule 2 (measured as the distance between the upper surface 2a and the lower surface 2b), preferably between 0.01 mm and 5 mm, and more preferably equal to 0.5 mm.
[0085] According to a possible embodiment not shown in the accompanying drawings, the surface relief 7 preferably exhibits a geometrically variable profile along its main direction of development, for example it is possible to provide the relief 7 with a ridged, sawtooth, stepped or other profile with different spacing, dimensions and thickness in order to further improve the adhesion properties with the soil depending on the particle size and consistency of the soil.
[0086] With reference to the embodiment shown in the accompanying drawings, preferably the surface relief 7 is continuous, ie extends completely between the opposing terminal ends 1 b of the strip 1 .
[0087] According to a possible embodiment not shown in the accompanying drawings, the relief 7 may preferably comprise a longitudinal channel extending parallel to the longitudinal extension direction X of the strip 1 and a plurality of longitudinal reinforcing fibres arranged in the longitudinal channel.
[0088] Furthermore, the relief 7 may be made of a different polymer matrix than the coated capsules 2 of the strip 1 .
[0089] Preferably, the material 100 has an overall thickness, measured perpendicular to the longitudinal direction of development X of the reinforced composite strip 1, of between 0.5 mm and 40 mm, more preferably between 5 mm and 10 mm.
[0090] Preferably, the reinforced composite material 100 can be made in roll form to optimize shipping space and ease installation.
[0091] Referring to FIG. 4, according to a further aspect of the present invention, there is a roll A comprising a reinforced composite strip 100 wound about a winding and unwinding axis R such that the winding and unwinding direction D of the strip is parallel to the longitudinal unfolding direction X of the reinforced composite strip 1.
[0092] Referring to FIG. 5, according to a further aspect of the present invention, there is a roll A comprising a reinforced composite strip 100 wound about a winding and unwinding axis R such that the winding and unwinding direction D of the strip 100 is perpendicular to the longitudinal deployment direction X of the reinforced composite strip.
[0093] Advantageously, the fact that the roll A can be unrolled in a deployment direction D parallel to the wall or cliff, and thus the strip is positioned perpendicular to the wall or cliff (in the correct pulling direction), allows for rapid laying of the material 100 over any length without the need for intermediate cutting, improving laying efficiency by appropriately dimensioning the width of the roll according to design requirements.
[0094] The present invention overcomes the drawbacks of the prior art and achieves the proposed objectives by providing an efficient, high performance reinforced composite material that improves installation conditions, ground adhesion and durability while optimizing costs.
Claims
1. A reinforced composite material (100) comprising at least one sheet (10, 20) made of a flexible material and a plurality of reinforced composite strips (1), Each reinforced composite strip (1) a covering capsule (2) surrounding a plurality of longitudinal channels (3) extending parallel to the longitudinal direction of extension (X) of said reinforced composite strip (1), said longitudinal channels (3) being arranged in sequence between the opposite side edges (1a) of said reinforced composite strip (1); a plurality of longitudinal reinforcing fibres (3a) arranged in said longitudinal channels (3), The composite reinforcing strip (1) is joined to the sheets (10, 20) at the lower surface (2b) of each of the covering capsules (2) so that the longitudinal direction (X) of the composite reinforcing strip (1) is parallel to the sheet (10, 20); said at least one sheet (10, 20) of flexible material comprising a 3D structure of thread-like elements defining a plurality of cavities (12, 22) therebetween suitable for at least partially interpenetrating with the ground in use; The coated capsule (2) has no surface opening on its upper surface (2a) that leads into the longitudinal channel (3), The reinforced composite material (100) does not comprise any further reinforced composite strips extending along a longitudinal extension direction perpendicular to the longitudinal extension direction (X) of the composite reinforcing strip (1).
2. 2. The reinforced composite material (100) according to claim 1, wherein the 3D structure of thread-like elements is made of entangled synthetic filaments (21) such as polypropylene, preferably produced by spraying or extrusion or additive manufacturing methods.
3. 3. Reinforced composite material (100) according to claim 2, wherein the reinforcing strip (1) is at least partially embedded in the sheet (10, 20).
4. 2. The reinforced composite material (100) of claim 1, wherein the 3D structure of thread-like elements is made of a layer (11) of textile material having a plurality of protruding rings (11 a) of filaments that together define the plurality of cavities (12), the protruding rings (11 a) being filaments drawn from the layer (11) of textile material or made of further filaments woven with the layer (11) of textile material.
5. 2. The reinforced composite material (100) of claim 1, wherein an upper surface (2a) of each covering capsule (2) opposite the lower surface (2b) bonded to the sheet (10) is formed with a surface relief (7) having a main direction of expansion parallel to the longitudinal direction of expansion (X) of the reinforced composite strip (1), and each surface relief (7) extends at least partially between the opposing terminal ends (1b) of the reinforced composite strip (1).
6. 6. A reinforced composite material (100) according to claim 5, wherein said surface reliefs (7) have a geometrically variable profile along their main direction of development.
7. 6. A reinforced composite material (100) according to claim 5, wherein said surface relief is continuous and extends completely between said opposing terminal ends (1b) of said strip (1).
8. 6. A reinforced composite material (100) according to claim 5, wherein each relief (7) comprises a longitudinal channel extending parallel to the longitudinal direction of extension (X) of the strip (1) and a plurality of longitudinal reinforcing fibres arranged in said longitudinal channels.
9. 2. The reinforced composite material (100) of claim 1, wherein the reinforced composite material (100) has an overall thickness, measured perpendicular to the longitudinal direction of development (X) of the reinforced composite strip (1), of between 0.5 mm and 40 mm, more preferably between 5 mm and 10 mm.
10. A roll (A) comprising a tape of reinforced composite material (100) according to one or more of claims 1 to 9, wherein the tape is wound around a winding and unwinding axis (R) such that the winding and unwinding direction (D) of the tape is parallel to the longitudinal unfolding direction (X) of the reinforced composite strip (1).
11. A roll (A) comprising a tape of reinforced composite material (100) according to one or more of claims 1 to 10, the tape being wound around a winding and unwinding axis (R) such that the winding and unwinding direction (D) of the tape is perpendicular to the longitudinal unfolding direction (X) of the reinforced composite strip (1).