EP3770324A1 - Surface coating arrangement and process for repairing same - Google Patents

Abstract

Device for coating (5) a support (4), said device comprising: - a coating (5), preferably damping, configured to cover said support (4), - a fixing device (1) of the coating (5) on the support (4), where the fixing device (1) comprises at least a first fixing element (2) configured to be fixed directly on a surface of said support (4) by anchoring means configured according to the nature of the support (4), and in that the fixing device (1) is completely taken up in the mass of said coating (5) and a repair process for such a device for coating a support.

Description

TECHNICAL FIELD OF THE INVENTION

The present invention relates generally to the field of surface coverings, in particular to devices for fixing floor coverings, in particular to damping floors such as playground floors. In particular a system for fixing the periphery of such coatings.

It also relates to a method for installing a coating on a support surface.

Finally, it also relates to a method for repairing the peripheries of a coating of a support surface.

STATE OF THE PRIOR ART

The problem of the detachment of coatings and damping floors at their periphery is known. In fact, the edge of shock-absorbing floors, for example shock-absorbing floors for playgrounds, have a greater fragility and a tendency to peel off or tear off following repeated trampling by users; to temperature variations; to the stagnation of rainwater due to the irregularity of the levels of the supports; mechanical sweepers in schoolyards, etc.

In addition, floor coverings can be used for various recreational and sports applications, such as athletics tracks, playgrounds, horseback riding, and also in various roadworks and networks, for repairing cavities. on asphalt pavements, called potholes, for example. In these cases, the operating methods are adapted according to the field of intervention.

There are various solutions for fixing floor coverings, and in particular for fixing shock absorbing floors.

A first solution is to glue the damping coating directly to the ground acting as a support, the ground generally being asphalt or concrete. This requires large amounts of glue and the periphery of these floors remains fragile and sensitive to detachment, for the reasons mentioned above.

Another solution is to make a sill, also called a trench, which consists of making a trench, or open tunnel, about 10 cm by 10 cm wide by 10 cm deep over the entire contour of the support on which the covering must be laid. A larger quantity of aggregate is used in this solution, but the edges remain sensitive to tearing. Said coating is poured and / or deposited on the support and in the stringers in order to have a greater resistance to tearing at the level of these edges because it benefits from a greater thickness in these zones. However, this has the drawback of damaging the support located under the coating, because the hollowed out sills are necessary, and are made directly in the support. In addition, if the coating is removed or modified, it will also be necessary to restore and / or regroove the substrate before it can be used again. Thus, the repair of the support remains the responsibility of the operator, which represents a very significant cost.

Another solution consists of making a concrete slab about 10 to 15cm thick over the entire surface to be covered and at the periphery a seat for the concrete borders 20 cm high, 8 cm wide and thick. 'at least 1 m long. Thus, the level of said slab is controlled, which simplifies good drainage of rainwater. In addition, the upper parts of these edges are rounded and have a roughness which makes it possible to improve the adhesion of the coating with the edge, when said coating is poured. However, this solution has the drawback of the necessary production of a specific support produced for this purpose, which requires a considerable investment in time and money. If the installation is to be repaired, the operator must pay for the repair of the initial support or its replacement.

Another existing solution consists of the use of rubber edging. These borders are made, like those in concrete, directly on a concrete seat. However, this solution also requires a significant financial investment, as well as a significant implementation time.

All these costly solutions pose problems of durability, high maintenance costs, as well as environmental problems. In terms of durability, managers are generally forced to intervene 6 to 8 years after installation of the coating to bring it into conformity due to the detachment of the peripheries of the coating, which generates a significant cost, and problems of safety for the users of the equipment. In environmental terms, the production and installation of such coatings produces a lot of waste, in particular during the reclamation intervention, the shock-absorbing soils on the edge being cut and put in the recycling center, and during the significant use of glue. for the tack coat on the periphery so that the edges can hold as long as possible. The production and repair of supports also present high financial and environmental costs.

Indeed, faced with the phenomenon of detachment of the peripheries, or edges, the restoration can be carried out in two different ways. A first possibility consists in cutting and removing the periphery of the coating at the level of the detachment, in order to replace it, which generates waste, then to produce a new periphery, generally of another color, which represents a significant cost. The second possibility consists of making the coatings thicker at the periphery, which gives rise to semi-convex zones, liable to represent obstacles for the users, who may for example trip over them. This type of solution does not generally meet the requirements of the standards in force because of security problems for users.

DISCLOSURE OF THE INVENTION

The object of the present invention is therefore to propose a device for coating floors, making it possible to alleviate at least part of the drawbacks of the prior art while proposing an inexpensive, invisible and easy to install solution, reducing the quantities of waste and chemicals used in particular for fixing the coating, while being suitable for a large variety of supports, without the need to modify them, throughout the life of the damping floor.

In addition, the invention makes it possible to avoid reconditioning of the coating because the system guarantees the maintenance of the peripheries over its entire lifetime, taking into account the quality of materials such as stainless steel, brass, aluminum. , recycled plastic and fiberglass mesh. This represents a financial gain since the peripheries of said coatings are currently used up to three times during their life.

The aim of this solution is also to avoid having to hollow out the support on which the coating will be deposited and so that the fixing system does not protrude from the coating but is integrated into the latter.

• un revêtement, préférentiellement amortissant, configuré pour recouvrir ledit support,
• un dispositif de fixation du revêtement sur le support,
  caractérisé en ce que le dispositif de fixation comprend au moins un premier élément de fixation configuré pour être fixé directement sur une surface dudit support par des moyens d'ancrage configurés en fonction de la nature du support, et en ce que le dispositif de fixation est complètement pris dans la masse dudit revêtement.

To this end, the invention relates to a device for coating a support, said device comprising:

• a coating, preferably damping, configured to cover said support,
• a device for fixing the coating on the support,
  characterized in that the fixing device comprises at least a first fixing element configured to be fixed directly to a surface of said support by anchoring means configured according to the nature of the support, and in that the fixing device is completely taken in the mass of said coating.

According to one particular feature, the first fastening element forms an edge delimiting at least part of the surface of the support to be covered.

According to one feature, the first fixing element is fixed only on the surface of said support.

According to one particular feature, the fixing device further comprises at least one second fixing element coupled to the first fixing element and which extends towards the interior, preferably the center, of the covering.

According to one feature, the second fixing element forms a mesh.

According to one particular feature, the first fixing element comprises at least a first part forming a base fixed to the support, said base having orifices.

According to one particular feature, the first fixing element has a second part, at least one portion of which forms a projection.

According to one particular feature, the fixing device is fixed by anchoring the base of the first fixing element directly to the support, preferably by anchoring means chosen as a function of the support on which the device is fixed.

According to one feature, the coating has damping properties and comprises at least one damping layer and one aesthetic layer covering said damping layer, the fixing device being at least taken from the mass of the aesthetic layer and / or the damping layer, and preferably both in the cushioning layer and in the aesthetic layer.

According to one particular feature, the fixing device further comprises orifices in the second part of the first fixing element.

The invention also relates to the method of fixing a coating on a support, by means of the fixing device according to the invention.

• Dépôt du dispositif de fixation en bordure du support à recouvrir, ledit premier élément de fixation formant un périmètre délimitant ladite surface du support à recouvrir,
• Fixation du premier élément de fixation du système de fixation par des moyens d'ancrage configurés en fonction du support,
• Dépôt de colle sur au moins une partie du dispositif de fixation, de préférence sur tout le système de fixation,
• Mélange des composants du revêtement à de la colle, puis dépôt sur le dispositif de fixation et sur le support à recouvrir, de façon à ce que le revêtement recouvre entièrement le dispositif de fixation, le dispositif de fixation étant alors pris dans la masse du revêtement, puis repos/séchage.

This object is achieved by a method of fixing a coating of a support, without requiring the digging of trenches in or around said support, by means of a fastening device comprising at least a first fastening element, the method being characterized in that it comprises the following steps:

• Deposit of the fixing device at the edge of the support to be covered, said first fixing element forming a perimeter delimiting said surface of the support to be covered,
• Fixing of the first fastening element of the fastening system by anchoring means configured according to the support,
• Glue deposit on at least part of the fixing device, preferably over the entire fixing system,
• Mixing of the components of the coating with glue, then deposit on the fixing device and on the support to be covered, so that the coating completely covers the fixing device, the fixing device then being caught in the mass of the coating , then rest / drying.

According to one particular feature, in the method, the anchoring means are produced by spitage on the surface of the support when said support is made of concrete or by chemical anchor on the surface of the support when said support is made of asphalt.

According to one feature, in the method, the coating comprises at least one damping layer and an aesthetic layer covering the damping layer, and where, following the mixing of its components of each layer with glue, the damping layer is deposited on at least the support, and preferably on at least part of the fixing device, then the aesthetic layer is deposited on at least the damping layer and preferably on at least part of the fixing device

• Mise à nu du support sur la partie à réparer ;
• Mise en place et fixation du dispositif de fixation au moins en bordure de la partie du support à recouvrir ;
• Dépôt de colle sur la partie de l'ancien revêtement destinée à être en contact avec le nouveau revêtement ;
• Mélange des composants du revêtement à de la colle, puis dépôt sur le dispositif de fixation et sur la partie du support à recouvrir, de façon à ce que le revêtement recouvre entièrement le dispositif de fixation, le dispositif de fixation étant alors pris dans la masse du revêtement ; et
• Séchage du revêtement.

The subject of the invention also relates to a method for repairing a device for coating a support comprising a coating, preferably damping, configured to cover said support, a device for fixing the coating to the support, comprising at least one first fixing element configured to be fixed directly to a surface of said support by anchoring means configured as a function of the nature of the support, the fixing device being completely taken up in the mass of said coating. The process comprises the following steps:

• Exposing the support on the part to be repaired;
• Positioning and fixing of the fixing device at least at the edge of the part of the support to be covered;
• Glue deposit on the part of the old coating intended to be in contact with the new coating;
• Mixing the coating components with glue, then deposit on the fixing device and on the part of the support to be covered, so that the coating entirely covers the fixing device, the fixing device then being taken in the mass of the coating; and
• Drying of the coating.

According to one embodiment of the repair method, the first fastening element is a slot made in the support or made in an added edge fixed to the support.

According to another embodiment of the repair method, the first fixing element is fixed only on the surface of the support.

Advantageously, in one embodiment of the method, the fixing device further comprises at least one second fixing element coupled to the first fixing element and which extends towards the interior, preferably the center, of the coating.

Advantageously, the second fixing element (3) forms a mesh.

BRIEF DESCRIPTION OF THE FIGURES

• [Fig. 1] représente une vue schématique d'une partie d'un premier mode de réalisation de l'invention.
• |Fig. 2] représente une vue schématique d'une partie d'un second mode de réalisation de l'invention
• [Fig. 3] représente une vue schématique d'une partie d'un troisième mode de réalisation de l'invention
• |Fig. 4] représente une vue du dessus d'un troisième mode de réalisation de l'invention
• [Fig. 5] représente une vue schématique d'une partie d'un quatrième mode de réalisation de l'invention
• |Fig. 6] représente une vue schématique d'une partie d'un cinquième mode de réalisation de l'invention
• [Fig. 7] représente une vue schématique en vue de coupe du premier mode de réalisation de l'invention.
• [Fig. 8] représente schématiquement plusieurs possibilités d'inclinaison et de longueur du deuxième mode de réalisation.
• [Fig. 9] représente schématiquement en vue de coupe un premier mode de réalisation d'un dispositif de revêtement réparé selon l'invention.
• [Fig. 10] représente schématiquement un second mode de réalisation d'un dispositif de revêtement réparé selon l'invention.
• [Fig. 11] représente schématiquement une variante du second mode de réalisation d'un dispositif de revêtement réparé selon l'invention.
• [Fig. 12] représente schématiquement une seconde variante du second mode de réalisation d'un dispositif de revêtement réparé selon l'invention.
• [Fig. 13] représente schématiquement une troisième variante du second mode de réalisation d'un dispositif de revêtement réparé selon l'invention.

Other characteristics, details and advantages of the invention will emerge on reading the following description with reference to the appended figures, which illustrates:

• [ Fig. 1 ] shows a schematic view of part of a first embodiment of the invention.
• | Fig. 2 ] shows a schematic view of part of a second embodiment of the invention
• [ Fig. 3 ] shows a schematic view of part of a third embodiment of the invention
• | Fig. 4 ] shows a top view of a third embodiment of the invention
• [ Fig. 5 ] shows a schematic view of part of a fourth embodiment of the invention
• | Fig. 6 ] shows a schematic view of part of a fifth embodiment of the invention
• [ Fig. 7 ] shows a schematic sectional view of the first embodiment of the invention.
• [ Fig. 8 ] schematically shows several possibilities of inclination and length of the second embodiment.
• [ Fig. 9 ] schematically shows a sectional view of a first embodiment of a repaired coating device according to the invention.
• [ Fig. 10 ] schematically shows a second embodiment of a repaired coating device according to the invention.
• [ Fig. 11 ] schematically shows a variant of the second embodiment of a repaired coating device according to the invention.
• [ Fig. 12 ] schematically shows a second variant of the second embodiment of a repaired coating device according to the invention.
• [ Fig. 13 ] schematically shows a third variant of the second embodiment of a repaired coating device according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

Many combinations can be envisaged without departing from the scope of the invention; those skilled in the art will choose one or the other depending on the economic, ergonomic, dimensional or other constraints that they will have to comply with.

By "spitage" is meant the fact of spiter, or of pisto-seal, that is to say for example the use of a gas pistol and / or battery capable of driving nails into steel, concrete and other hard 4 substrates.

By “chemical anchor” is meant the deposition of a bi-material resin whose reaction will cause solidification of said resin and its attachment to the support 4.

By “net” is meant any grid, set of meshes which may have a round, square, diamond or even rectangular shape configured to allow a distribution of the adhesion forces and the pressures undergone during the use of the coating 5, once the net has solidified by a layer of soil.

The term “shock-absorbing” coating or floor 5 means a floor whose properties make it possible to reduce the impact of a fall, for example in the context of play areas, where users, most often children, are likely to fall frequently.

• un revêtement 5, préférentiellement amortissant, configuré pour recouvrir ledit support 4
• un dispositif de fixation 1 du revêtement 5 sur le support 4, le dispositif de fixation 1 comprenant au moins un premier élément de fixation 2 configuré pour être fixé directement sur une surface dudit support 4 par des moyens d'ancrage configurés en fonction de la nature du support 4.

In general, the present invention comprises a device 5 for coating a surface of a support 4, said device comprising:

• a coating 5, preferably damping, configured to cover said support 4
• a device 1 for fixing the coating 5 on the support 4, the fixing device 1 comprising at least a first fixing element 2 configured to be fixed directly to a surface of said support 4 by anchoring means configured according to the nature support 4.

Advantageously, the coating 5 is then fixed to the support 4 without the latter having to be hollowed out and modified.

In certain embodiments, the fixing device 1 is completely taken up in the mass in said coating 5.

This allows the fixing system not to be visible while allowing excellent fixing with the coating 5 and with the support, capable of lasting over time 4. The fixing system is thus invisible to the user. Preferably, it does not significantly modify the damping capacities of the ground, given that this system is installed at the periphery, and therefore outside the impact zone, or potential fall zone, defined during the design of the zone to cover with the coating.

In some embodiments, the first fixing element 2 forms an edge delimiting at least part of the surface of the support 4 to be covered. In preferred non-limiting embodiments, the first fixing element 2 forms a border delimiting the entire surface of the support 4 to be covered.

Advantageously, improving the fixing of the periphery, or border, of the coating 5 makes it possible to improve the durability of the assembly while saving the amount of material and structure used in relation to uniform attachment of the entire coating 5. This improves the efficiency of the attachment to the periphery of the coating 5. Thus, the attachment to the support 4 requires less glue , because the coating 5 is integrated into the fixing system, the central part of the coating 5 requiring less glue because it is held by its own weight. In addition, the pressures exerted on tearing also being almost zero outside the periphery.

In some embodiments, the first fixing element 2 is fixed only on the surface of said support 4.

In other words, the fixing of the first fixing element 2 of the device on the support 4 is carried out without digging trenches / sill in or around the support 4.

In other words, the support 4 does not have trenches / stringers and is preferably substantially flat.

Advantageously, this makes it possible not to damage the support 4 and to facilitate the installation and the replacement of the covering 5 and of the fixing system without having to carry out major development work.

The term “substantially” flat is understood to mean a support 4 generally free of significant modifications to its surface, and which, despite potential roughness and other reliefs, does not include any particular structure such as a trench made for the purpose of fixing a coating thereto. 5.

In some embodiments, as illustrated by way of example and in a manner not limited to the figure 1 , the fixing device 1 further comprises at least one second fixing element 3 coupled to the first fixing element 2 and which extends towards the interior, preferably the center, of the coating 5.

Advantageously, this makes it possible to improve the cohesion of the coating 5 on the fixing element by multiplying the points at which the pressures are applied when using the coating 5. Thus, instead of having a concentration of the pressures d tearing suffered by the first element of fixing 2 located at the edge, said pressures will be distributed more evenly over the entire coating 5 and the device.

Advantageously, the second fastening element does not in any way alter the essential damping function of the coating, given its thickness, its shape and its position.

In addition, the device has the additional advantage of not being, or only slightly, being affected by rain and frost, because the fixing of the covering 5 is not carried out directly on the support 4, where the rain can occur. infiltrate, stagnate and freeze, thus damaging and / or destroying said attachment of the devices of the prior art. In fact, conversely in the invention, the fixing is due to the coating 5 taken in the mass of the device, partly at the level of elements of the device not being in contact with the support 4 and therefore not being , or little, in contact with water for a long time.

Nevertheless, even being in contact with the support and even if the water stagnates below, the damping coating remains maintained thanks to the system taken in the mass of the damping coating, the aggregates caught in the mesh take care of the maintenance, hence savings in the use of chemicals such as adhesion adhesive to the support.

In some embodiments, the second fastener 3 forms a mesh. Thus, the second fixing element 3 can form a net whose meshes have a round, square, diamond, honeycomb or even rectangular shape.

Advantageously, the mesh is configured to distribute the adhesion and tension forces applied to the coating 5 during its use, once said mesh is taken in the mass in said coating 5.

In the figure 1 , the second fixing element 3 thus forms a net having diamond-shaped meshes, but it is possible to modify this shape by another.

Advantageously, the profile of the mesh makes it possible to modify the interactions of the second fixing element 3 taken from the mass in the coating 5 with the forces applied to said ground. The size of the meshes can also vary, preferably between 5 and 75mm, preferably between 10mm and 30mm, more preferably 10 and 25mm.

In certain embodiments, the first fixing element 2 comprises at least a first part 21 forming a base fixed to the support 4, said base having orifices 22.

Advantageously, these orifices 22 present in the base allow both better evacuation of water while allowing better grip of the covering 5 to the first fixing element 2 by passing part of said floor directly into the element of fixing through said orifices 22 of the base, and therefore better bonding.

In certain embodiments, the base 21 comprises a raising element 9, for example a washer placed under the base 21 before it is fixed, or a thickness (not shown) present directly on the face of the base 21 in contact with the support, in order to raise said base, which advantageously makes it possible to facilitate the flow of water. The booster element 9 may for example and in a nonlimiting manner have a thickness of 5mm.

In a variant, a series of grooves, for example 3 millimeters thick and 3 millimeters deep, is produced in order to facilitate the flow of rainwater to the outside of the coating. The dimensions of these grooves vary depending on the use case and the example cited is not limiting.

In other embodiments, the raising element can also be produced in the form of a concrete flashing with a thickness of approximately 5 to 10 cm, arranged under the whole of the base, at the periphery of the covering. Advantageously, this greatly facilitates the flow of water when the support is sufficiently porous, for example in compacted gravel, the water then being able to flow through the coating and the support through the center of the covered area, and the periphery of the coating resting on the concrete flashing.

In certain embodiments, the covering 5 has damping properties and comprises at least one damping layer and an aesthetic layer 52 covering said damping layer, the fixing device 1 being at least solidly in the aesthetic layer 52 and / or the damping layer, and preferably both in the damping layer and in the aesthetic layer 52. The damping layer can be composed of shredded tires. The aesthetic layer 52 can also be damping. The aesthetic layer 52 can be composed of crushed rubber, for example natural rubber. For example, the shredded tires have a particle size between 4 and 8mm. Independently, the crushed rubber has, for example, a particle size of between 1 and 4 mm. The dimensions of the components of the layers generally have a particle size between 1 mm to 8 mm.

In certain preferred embodiments, the fixing device 1 is taken from the mass of the two layers.

Thus, the components of the coating 5, for example rubber and / or tire aggregates, can pass through the meshes of the net or / and the expanded metal. After the layers of the coating 5 have dried, the ground material is trapped in the meshes of the second fastener 3, and it is then very difficult to dislodge the periphery, or edge, of the coating 5 because it is caught, and hooked, in the fixing element.

In some embodiments, the first fixing element 2 has a second part 23, at least one portion of which forms a projection. In other words, the first fixing element 2 has a second part 23 extends away from the support 4, for example a wall having a non-zero angle with the support 4, preferably vertically relative to the support 4. This allows the fixing device 1 to be better taken in the mass of the coating 5. In other words, this part has at least one aerial portion, facing the first part 21 of the first element, forming a base in contact. with bracket 4.

In other embodiments, the first fixing element 2 does not include a second part 23. It may only include a base 21 from which extends a second element 3, preferably forming a mesh.

In preferred embodiments, the protruding portion forms a right angle with the base of the first fixing element 2, in order to allow better mass setting and better distribution of the forces undergone during the use of the coating 5, by example by trampling.

In some embodiments, the protrusion-forming portion can form various structures adapted to better solidification.

The device is anchored to the support at the level of anchoring points 7 present on the base 21. Preferably, these anchoring points are made on a part of the base 21 close to the periphery of the covering, rather than on a longer part. close to the center of the coating.

In embodiments, such as illustrated for example and in a nonlimiting manner to the figure 1 or 3 , the portion which extends forms at least one angle.

In embodiments, such as illustrated for example and in a nonlimiting manner to the figure 5 , the portion which extends forms a structure having straight walls, formed by right angles.

The right angles preferably have sharp edges, but it is conceivable that they have chamfers. The presence of sharp edges can improve the bonding of the device with the coating 5, by the distribution of the tensile forces, and by the increase in the contact and bonding surface.

In some embodiments, the first fastening element 2 further comprises orifices 24 in the second part 23 of the first fastening element 2, for example a wall having a non-zero angle with the support 4, for example a vertical wall. These orifices 24 may for example have a round, oval or oblong shape.

Thus, the ground material can pass through the openings 22, 24 of the base and the wall of the first fixing element 2, the ground material then being trapped during their drying. Advantageously, this makes it possible to improve the efficiency of the setting in mass with the coating 5 and therefore the fixing of the coating 5, without hindering the evacuation of water, the ground material forming the various layers of the coating 5 being permeable to water. 'water.

The second fastening element 3 which will be solidified in the coating 5 can be between approximately 7 to 15 cm depending on the thickness and the surface area of the coating 5 to be produced.

The orifices 22 present on the base can for example be spaced 10 cm apart.

In some embodiments, as illustrated on figure 1 , the first fixing element 2 forms at least one angle. This allows the ground to have an additional attachment point formed by the vertical wall of the angle iron.

Thus, in a particular non-limiting embodiment, the angle iron has a height of 3 cm, a width of 6 cm.

It is possible to achieve different shapes depending on the different first fixing elements of the different embodiments.

Thus, by using first fasteners each forming an angle, it is possible to produce coverings having the shapes of squares, rectangles, hexagonal, and octagons.

In some embodiments, the angles can be interlocked to produce elbows, for example of 15 °, 30 °, 45 °, 90 °, entering and / or leaving angles.

In certain embodiments, the first fixing element 2, for example forming an angle iron and the second fixing element 3, for example forming a mesh, can be made in one piece. In embodiments where the second fastener 3 forms a mesh, the mesh can be deployed at from the end of the base to then join the inclined wall, and continue beyond, towards the center of the coating 5.

In other embodiments, the two fastening elements are coupled by fastening means, for example screws or nails.

In some embodiments, as illustrated on figure 2 in a nonlimiting manner, in which the first fixing element 2 comprises a base forming a mesh in contact with the support 4. In a nonlimiting manner, it can also comprise a second part 23 forming a mesh, and forming an inclined wall, the two parts being embedded in the coating 5.

In certain embodiments, the first and second part are made of the same material, preferably in the same part.

In certain embodiments, the first part 21 forming the base has a dimension between approximately 2 to 5 cm, preferably approximately 3 to 4 cm, this dimension being able to vary according to the thickness of the coating 5 to be fixed. This can include grooves 8 or thicknesses to improve water drainage or rigidity, respectively. In certain embodiments, the second part 23 forming the net having a length of between approximately 7 cm and 18 cm, the length being able to vary according to the thickness of the coating 5 to be fixed.

In addition, the cuts thus made in the mesh allow the borders to follow any profile, shape or angle. The notches can for example be spaced 15cm from each other on the base in contact with the support 4 and being adapted according to the configuration of the desired shapes.

The use of this type of fixing device 1 allows all possible shapes to be produced by folding and rounding the net, including at the level of the angle between the base and the protruding portion, in other words the part Aerial. Thus, a multitude of possibilities at the level of the angle between the base and the aerial part is possible depending on the final thickness desired for the coating 5 as illustrated, by way of example, on figure 8 .

In embodiments, such as illustrated without limitation to the figure 3 , the first fixing element 2 is formed of several angles. These angles each have a second part 23, at least one portion of which protrudes, that is to say aerial parts, which may have the same height, or on the contrary have different dimensions.

In embodiments, such as illustrated by way of example on figure 3 in a non-limiting manner, the fixing device 1 comprises only the first fixing element 2, without thread, and is formed of 5 vertical walls connected by a base in 4 parts.

The number of vertical walls may vary depending on the embodiments. Increasing the number of vertical walls makes it possible to increase the number of attachment points and thus improve the fixing and durability of the covering 5 on the support 4 and on the fixing device 1.

Preferably, the angles close to the center of the coating 5 each have a protruding portion higher than that of the angles further from the center, and therefore closer to the periphery or edge of the coating 5. In other words, the vertical walls close to the edge of the coating 5 have lower heights than the vertical walls near the center of the coating 5.

The height of the walls is defined by the height of the coating 5, and must not exceed half the height of said coating 5. Regarding the walls of the end, they preferably measure a maximum of 1 cm high in order to facilitate access. at the playground and not represent an obstacle.

Preferably and in a nonlimiting manner, the tallest wall cannot exceed half the height of the final coating.

In some embodiments, the elbows formed between two angles may have angles between 15 ° and 90 ° in order to accommodate different configurations of desired shapes.

In certain embodiments, the angles have an “L” shape, in order to form vertical walls offering an optimum contact surface with the coating 5.

In certain embodiments, orifices 22 are present over the entire first part 21 forming the base in order to guarantee the evacuation of the water. These orifices 22 are preferably between 4 and 8 mm, preferably 6 mm.

During the application of the layers of coating 5, the crushed aggregates stick to the walls of the compartments as illustrated in figure 4 . The bonding surface is therefore larger. The presence of the larger wall, being the wall closest to the center of the coating 5, therefore prevents the aggregates from detaching during trampling, the pressure being exerted mainly from top to bottom.

In embodiments, such as illustrated by way of example on figure 5 in a nonlimiting manner, the fixing device 1 comprises a first fixing element 2, without thread, but with a first and a second part 23. The fixing element has the shape of an elongated "H", in other words a structure having straight walls, formed by right angles, and which has orifices 22, 24 allowing better evacuation of water and better maintenance of the layers of the coating 5.

In some embodiments, the attachment device 1 is made from recycled extruded plastic. Advantageously, this makes it possible to reduce the environmental impact, thanks to a very versatile material for making shapes because it is both very flexible and solid. In addition, this material presents less risk of cuts if the fixing device 1 is exposed, and cannot rust, unlike certain metals.

The material being flexible, it is possible to produce all shapes, however it is also possible to provide re-entrant or / and exit angles of 15 ° to 90 ° to make the binding more versatile.

The second part 23 of the first fixing element 2 forming a projection can comprise a vertical part and a horizontal part, the two parts possibly having orifices 24 allowing better water evacuation and better attachment hold of the layers of the coating 5. Grooves 8, for example in the direction of the width, can be produced during manufacture under the base, first part 21 of the first element fixed to the support 4, in order to further promote the evacuation of water.

In a particular non-limiting embodiment, the dimensions of the first fixing element 2 have a height of about 20mm, a width of the top horizontal wall of about 25mm, a width at the level of the base of about 35 to 45mm. . The first fixing element 2 can also have holes 22 of about 10mm, about every 5 cm and holes 24 on the vertical wall of about 10mmx30mm, about every 5 cm in order to ensure a better grip in the mass .

In some embodiments, such as illustrated for example and in a non-limiting manner to the figure 6 , the fastening system comprises a first fastening element 2 formed for example of plastic which can be recycled, molded and / or extruded, and a second fastening element 3 forming a mesh, for example a fiberglass net. The first element 2, for example made of recycled plastic, comprises a first part 21 composed of a wall forming a base in contact and fixed with the support 4 and does not include a second part 23. The second fixing element 3 can be present on the whole of the base 21 or only a part, as shown in figure 6 .

In certain non-limiting embodiments, the wall of the first fixing element 2 has a rounded outer edge. Advantageously, this makes it possible to facilitate access to the play area by having a height at the periphery of the covering 5 that is zero or almost zero in order to reduce the risks of tripping for a young user.

In certain non-limiting embodiments, the wall has a thickness of approximately 5mm which comprises orifices 24, preferably of 10, 20 or 30mm in order to increase the attachment and bonding surface. These orifices 24 promote the evacuation of rainwater and at the same time increase the bonding surface of the coating 5 in order to ensure optimum bonding.

This type of invisible border fastener is ideal for small thicknesses of coating 5, and it is easy to cut it to the desired degree to achieve any desired shape.

In some embodiments, the fiberglass mesh has mesh sizes between 6mm and 25mm. The fiberglass mesh can be molded to the first fastener 2, and has a length of between about 12 and 15 cm depending on the thickness of the coating 5.

During the application of rubber aggregates, the meshes of the fiberglass mesh as well as the perforations of the part in contact with the ground trap the aggregates and form a single part, making the separation of the aggregates very difficult or almost impossible in normal use.

In certain non-limiting embodiments, the mesh is placed halfway between the top of the coating 5 and the support 4 in order to ensure optimum retention of the edges of the coating 5, which has the additional advantage for the mesh of not be in contact with the support 4. The mesh is thus protected against damage due to frost, even when there is the presence of stagnant water at the level of the support surface 4.

The figure 7 shows a coating device 5 comprising a first and a second fixing element 3, once said coating 5 has been deposited on the fixing device 1 and fixed to the support 4 by the latter. In some embodiments, the two layers of the coating 5 both solidify the two fasteners. Conversely, it is possible that only one of the layers, for example the aesthetic layer 52, is in contact with the fixing element or elements.

In some embodiments, the fixing device 1 is fixed by anchoring the base of the first fixing element 2 directly to the support 4 by anchoring means chosen from the spitage, the chemical anchor, or conventional, for example at the level of a part of the orifices 22 of said base.

In the method of installing the system, it is important to properly fix the fixing system to the support 4 in order to ensure good retention over time. Thus for a support 4 made of asphalt, a mixture of pebbles, sand and bitumen, it is necessary to use a chemical anchor fixing, while the spitage is necessary for a concrete support 4.

In other words, the spitage is used in the case of a support 4 made of concrete, while fixing by chemical anchor is used in the case of a support 4 made of asphalt.

The adhesive layer is generally deposited by using a glue roller. In preferred embodiments, the deposition of glue, at least at the edges and therefore at the level of the first fastening element 2, is carried out by a pressure gun, such as a glue gun, for more precision, and for a more homogeneous spread over the entire surface to be bonded.

In certain embodiments, the fixing of the first fixing element 2 to the support 4, carried out by a spitage or by a chemical anchor according to the support 4, can be raised by 2 to 3 mm to promote the flow and the evacuation of the water, so that freezing standing water does not damage the system.

• Dépôt du dispositif de fixation 1 en bordure du support 4 à recouvrir, ledit premier élément de fixation 2 formant un périmètre délimitant ladite surface du support 4 à recouvrir,
• Fixation du premier élément de fixation 2 du système de fixation par des moyens d'ancrage configurés en fonction du support 4,
• Dépôt de colle sur au moins une partie du dispositif de fixation 1, de préférence sur tout le système de fixation,
• Mélange des composants du revêtement 5 à de la colle, puis dépôt sur le dispositif de fixation 1 et sur le support 4 à recouvrir, de façon à ce que le revêtement 5 recouvre entièrement le dispositif de fixation 1, le dispositif de fixation 1 étant alors pris dans la masse du revêtement 5, puis repos/séchage.

The present invention also relates to a fixing of a coating 5 of a support 4, without requiring to dig trenches in or around said support 4, by means of a fixing device 1 comprising at least a first fixing element 2. , the method being characterized in that it comprises the following steps:

• Deposit of the fixing device 1 on the edge of the support 4 to be covered, said first fixing element 2 forming a perimeter delimiting said surface of the support 4 to be covered,
• Fixing of the first fixing element 2 of the fixing system by anchoring means configured according to the support 4,
• Deposit of glue on at least part of the fixing device 1, preferably on the entire fixing system,
• Mixing of the components of the coating 5 with glue, then deposit on the fixing device 1 and on the support 4 to be covered, so that the coating 5 completely covers the fixing device 1, the fixing device 1 then being taken in the mass of the coating 5, then rest / drying.

Advantageously, following these steps makes it possible to obtain a solid and durable fixing of the coating 5, preventing the detachment of the coating 5 during the life of the coating 5. The fixing device 1 is then taken in the mass of the coating 5, and invisible to the eyes of the user, ensuring the maintenance of the coating 5 without presenting any danger to the users.

The device makes it possible to fix a coating on a bare support, but can also be used in situations of repairing a coating in poor condition, peeled for example. In the event that a coating is present before the installation of a device, for example in the case of repairing a detached coating, it is possible to cut and / or remove only the edges of the coating, in order to to access the support at its edges. The device is then fixed and then covered with the coating in order to be solidified therein. The coating can thus be deposited and glued only at the levels of the edges to be replaced, leaving the center of the coating intact, still in good condition. This has the advantage of making it possible to reduce the amount of materials used for reclamation, focusing on reclamation and fixing of the more fragile curbs. The borders are then fixed firmly and durably, thanks to the device.

For installation, the installer provides for the thickness of the coating 5 as a function of the potential fall height of the installed equipment.

In certain embodiments of the method, the glue is deposited by a pressure gun at least on the fixing device 1.

In some embodiments of the method, the coating 5 comprises at least one damping layer and an aesthetic layer 52 covering the damping layer, and where, following the mixing of its components of each layer with glue, the damping layer is deposited on at least the support 4, and preferably on at least part of the fixing device 1, then the aesthetic layer 52 is deposited on at least the damping layer and preferably on at least part of the fixing device 1. In certain preferred embodiments, the deposition is carried out so that the fixing device 1 is taken in the mass of the two layers.

The user's potential drop height differs depending on the greater or lesser coating thickness chosen.

In certain situations, for example in the case of more porous supports, such as compacted gravel, it may be advantageous to pour a concrete support on said gravel, at least at the level of the edges or periphery of the area to be covered, in order to to facilitate the attachment of the device to said edges. This has the advantage of allowing a solid and durable attachment to the periphery of the coating, while reducing the quantities of materials used for installing a coating on a fragile or porous support.

In a variant, an expanded aluminum metal of about 1 centimeter in height for example is fixed above the compacted bass. After pouring the coating aggregates and drying, the coating is held by the expanded metal. In this configuration, it is no longer necessary to use a bonding primer or a layer of polyurethane adhesive, usually applied before pouring the aggregates, which is an environmental advantage.

The present invention also relates to a method for repairing a coating device 5 of a support 4 by means of a fixing device 1 comprising at least a first fixing element 2. This repair method is for example implemented. when an existing coating device 5 suffers damage and peels off at its periphery. However, this method can also be implemented when carrying out the fixing of a new coating 5 on a support 4.

According to one embodiment, the method comprises a step of exposing the support 4 on the parts of the coating device 5 requiring repair. For a detachment at the edge of the coating, it is thus necessary to cut the part of the coating which comes off in order to remove it and have access to the underlying support 4.

In a first embodiment visible on the figure 9 , the method comprises the production of a first fixing element 2 over the length of the coating device 5 to be repaired, by making a longitudinal slot 10. This can for example be produced in the support 4 or in an added border 11 fixed to the support 4.

The slot 10 can be made in a support 4 when the latter is for example made of concrete, asphalt, asphalt, wood or any other material in which a slot 10 is possible.

A slot 10 can be made in an added edge 11, when the latter is for example made from concrete edges of type P1 or P2, asphalt, asphalt, wood or any other hard material in which a slot 10 can be made. The mix and the asphalt are for example materials chosen so that the edge 11 has a specific geometric shape at the location where this edge 11 is positioned. In another embodiment of the edge 11, the latter is a profile. made of recycled plastic, aluminum or any other material suitable for making a profile. The use of a profile makes it possible, for example, to produce the slot 10 during the manufacture of said profile rather than to produce it a posteriori with a router. On an edge 11, the slot 10 is for example placed on its upper part 12 or on its side part 13.

Advantageously, the slot 10 is made for example with a trapezoidal shape of the “dovetail” type, the shape of an inverted “T”, of a “U” slightly closed or straight on its upper part, or else all another form requiring a slot 10 with a narrowed upper part and a lower part of increased dimension. The slot 10 has for example a depth of a few centimeters, for example 2 centimeters and has for example a width of a size ranging from a few millimeters to a few centimeters. The depth of the slot 10 requires a depth of the material in which the slot 10 is present at least greater than the depth of the slot 10, for example 4 centimeters if the slot 10 is 2 centimeters deep. The slots can be made in all shapes, depths and widths depending on the configuration, the height of the floors or the nature of the supports.

The method according to the first embodiment also comprises a step of inserting a second fixing element 3 into the slot 10. This is for example a mesh 3 which extends from the slot 10 towards the center. of the coating 5. It has for example a width of more than twenty centimeters. This is for example a fiberglass mesh, a polypropylene mesh, an aluminum expanded metal or a perforated sheet. The mesh 3 ensures that the covering 5 is held in place once in place thanks to its honeycomb shape.

The remainder of the space in the slot is then filled with a fixing mixture 14. This mixture contains for example epoxy adhesive, or a chemical sealant or any other sealing material, or again, depending on its dimensions, granulates in rubber mixed with polyurethane glue and fiberglass flakes.

The coating 5 is cast on the support 4 to be coated as well as above and below the mesh 3 and the slot 10. It comprises a lower shock-absorbing layer 51 and an aesthetic upper layer 52 composed for example of Ethylene-Propylene aggregates. Diene Monomer, polyurethane glue and glass fiber flakes. The mesh 3 is taken in the coating 5, for example between the two layers or in one of the two layers. Beforehand, a layer of glue 15 mixed with fiberglass flakes is applied to the old coating 16 in order to solidify the joint between the old 16 and the new coating 5, visible figure 10 .

Following a drying step, the fixing device 1 obtained between the mesh 3 and the aggregates present in the slot 10 is taken in the mass of the coating 5 and allows the coating 5 to be fixed to the support 4.

In a variant, the slot is replaced by a succession of holes, the bottom of the hole of which is wider than the top in order to be able to insert pieces of mesh and the coating therein so that, after drying, the coating is fixed to the support by this device taken in its mass. For example, the holes are drilled in the support or in an added border and have a frustoconical shape. In addition, the mesh pieces have for example a size of about 10 centimeters long, depending on the thickness of the coating, and a few centimeters wide. Finally, the coating is for example a mixture of aggregates and fiberglass flakes.

In a second embodiment of the repair method visible on the figure 10 , no slit is made. The first fixing element 2 is directly fixed to the support 4. It is for example a set of chemical plugs, plastic or brass, nails, screws or other fixing elements. These first fasteners 2 are placed over the entire length of the coating device 5 to be repaired and are spaced for example by about fifteen centimeters.

The method according to the second mode of implementation also comprises a step of inserting a second fixing element 3 fixed between the support 4 and the first fixing element 2. This is for example a mesh 3 which extends from the first fastening element 2 towards the center of the covering 5. It has for example a width of more than twenty centimeters. This is for example a fiberglass mesh, a polypropylene mesh, an aluminum expanded metal or perforated sheet. The mesh 3 ensures that the covering 5 is held in place once in place thanks to its honeycomb shape.

The coating 5 is then cast on the support 4 to be coated as well as over the mesh 3 and the first fixing element 2. It comprises a lower shock-absorbing layer 51 and an aesthetic upper layer 52 composed for example of Ethylene-Propylene aggregates. Diene Monomer, polyurethane glue and glass fiber flakes. The color of the new aesthetic layer 52 is for example different from the original color of the old coating 16 in order to indicate that the latter has been repaired. The mesh 3 is taken in the coating 5, by example between the two layers or in one of the two layers. Beforehand, a layer of polyurethane adhesive 15 mixed with glass fiber flakes is applied to the old coating 16 in order to durably solidify the joint between the old 16 and the new coating 5.

Following a drying step, the fixing device 1 obtained between the mesh 3 and the first fixing element 2 is taken in the mass of the coating 5 and allows the coating 5 to be fixed to the support 4.

In a variant of the second mode of implementation of the visible repair method figure 11 , the first fixing element 2 is an aluminum tube with a square or round section and a diameter of between 5 and 15 millimeters depending on the final thickness of the coating 5. The aluminum is easily moldable and allows you to create any shape of periphery of the coating 5. It is fixed to the support 4 by means of fixing lugs 17 arranged at variable distances, for example nailed or screwed to the support. A glass fiber mesh 3 is fixed between the aluminum tube 2 and the support 4, which makes it possible to cover this fixing device 1 with the coating 5 with a small thickness of the coating. The mesh is in particular taken from the mass of the coating on its upper side and on its lower side, the coating being fixed vis-à-vis the latter since it passes through the meshes of the mesh.

In a second variant of the second embodiment of the visible repair method figure 12 , the first fixing element 2 is for example a rail or a thin aluminum border fixed to the support. A mesh is fixed between the rail and the support and extends inwards. A step of covering this fixing device is then carried out with the casting of the coating.

In a third variant of the second embodiment of the visible repair method figure 13 , the first fixing element 2 is for example a rail or a thin plastic border fixed to the support. A mesh is fixed between the rail and the support and extends inwards. A step of covering this fixing device is then carried out with the casting of the coating.

The table below describes different possible embodiments of the invention. These embodiments are described by way of example and are in no way limiting. Similarly, the examples of the user's potential fall heights are only values given as an indication, these recommended values being in no way compulsory, and the person skilled in the art easily understands that he can achieve one of these embodiments with different potential fall height values. For example, he easily understands that increasing the thickness of the coating 5 allows better damping, which makes it possible to secure falls whose height is outside the ranges given by way of example, and it is thus possible to increase the thickness of the coating. coating beyond 100mm. [Table 1] Embodiments Angle + Expanded metal Expanded metal + solid base Multiple wall angle Perforated fixing in "H" Perforated horizontal fixing + Net Examples of potential user fall heights (m) 1.70-2.80 1-2.80 1.70-2.80 1.70-2.80 0.60-1.40 Granulometry (rubber, tires) 1-4mm, 4-8mm Recommended coating thickness (5) 50-100mm 30-100mm 50-100mm 50-100mm 20-40mm Fixing to the ground according to the support (4) Preferably, raised over 2/3 mm to promote the evacuation of rainwater. Material used for the fastening element (s). Stainless steel, galvanized or aluminum for expanded metal, aluminum, steel or galvanized steel for angle iron Stainless steel, galvanized or aluminum Stainless steel, galvanized or aluminum Recycled plastic extruded under pressure Die-cast or die-cast recycled plastic and fiberglass mesh Workable shapes Squares, rectangles, hexagons, and octagons All possible shapes Squares, rectangles, hexagons, and octagons All possible shapes All possible shapes

It will be readily understood from reading the present application that the features of the present invention, as generally described and illustrated in the figures, can be arranged and designed according to a wide variety of different configurations. Thus, the description of the present invention and the related figures are not intended to limit the scope of the invention but simply represent selected embodiments.

Those skilled in the art will understand that the technical features of a given embodiment can in fact be combined with features of another embodiment unless the reverse is explicitly mentioned or it is evident that these characteristics are incompatible. In addition, the technical characteristics described in a given embodiment can be isolated from the other characteristics of this embodiment unless the reverse is explicitly mentioned.

It should be obvious to those skilled in the art that the present invention allows embodiments in many other specific forms without departing from the field defined by the scope of the appended claims, they should be considered by way of illustration. and the invention should not be limited to the details given above.

LIST OF REFERENCE SIGNS

1.

Fixing device

2.

First fixing element

21.

First part of the first fastener

22.

Ports of the first part

23.

Second part of the first fastener

24.

Ports of the second part

3.

Second fixing element

4.

Support

5.

Coating

51.

Shock absorbing layer

52.

Aesthetic layer

6.

Coating device

7.

Anchor

8.

Grooves

9.

Enhancer element

10.

Slot

11.

Reported border

12.

Upper part of the edging

13.

Side part of the edge trim

14.

Fixing mixture

15.

Glue layer between the old and the new coating

16.

Old coating

17.

Fixing lug

Claims (18)

Device for coating (5) a support (4), said device comprising: - a coating (5), preferably damping, configured to cover said support (4), - a fixing device (1) of the covering (5) on the support (4), characterized in that the fixing device (1) comprises at least a first fixing element (2) configured to be fixed directly on a surface of said support (4) by anchoring means configured according to the nature of the support (4), and in that the fixing device (1) is completely taken in the mass of said coating (5). Coating device (5) for a support (4) according to Claim 1, in which the first fixing element (2) forms a border delimiting at least part of the surface of the support (4) to be covered. A coating device (5) for a support (4) according to claim 1 wherein the first fixing member (2) is fixed only to the surface of said support (4). A device for coating (5) a floor support (4) according to claim 1 wherein the fixing device (1) further comprises at least one second fixing element (3) coupled to the first fixing element (2) and which extends towards the interior, preferably the center, of the covering (5). Device for coating (5) a support (4) according to any one of the preceding claims, in which the second fixing element (3) forms a mesh. A device for coating (5) a support (4) according to any one of the preceding claims, in which the first fixing element (2) comprises at least a first part (21) forming a base fixed to the support (4), said base having orifices (22). Device for coating (5) a support (4) according to any one of the preceding claims, in which the first fixing element (2) has a second part (23), at least one portion of which forms a projection. Device for coating (5) a support (4) according to any one of the preceding claims, in which the fixing device (1) is fixed by anchoring the base of the first fixing element (2) directly to the support ( 4) preferably by anchoring means chosen according to the support (4) on which the device is fixed. A device for coating (5) a support (4) according to any one of the preceding claims, in which the coating (5) has damping properties and comprises at least one damping layer and an aesthetic layer (52) covering said damping layer , the fixing device (1) being at least taken in the mass of the aesthetic layer (52) and / or the damping layer, and preferably both in the damping layer and in the aesthetic layer (52). A coating device (5) for a support (4) according to any preceding claim wherein the fixing device (1) further comprises holes (24) in the second part (23) of the first fixing member (2). Method of fixing a coating (5) of a support (4), without requiring to dig trenches in or around said support (4), by means of a fastening device (1) comprising at least a first element fixing (2), the method being characterized in that it comprises the following steps: - Deposit of the fixing device (1) at the edge of the support (4) to be covered, said first fixing element (2) forming a perimeter delimiting said surface of the support (4) to be covered, - Fixing of the first fixing element (2) of the fixing system by anchoring means configured according to the support (4), - Deposit of glue on at least part of the fixing device (1), preferably on the entire fixing system, - Mixing of the coating components (5) with glue, then deposit on the fixing device (1) and on the support (4) to be covered, so that the coating (5) completely covers the fixing device (1), the fixing device (1) then being taken in the mass of the coating (5), then rest / drying. Method according to claim 11, characterized in that the anchoring means are produced by spitage on the surface of the support (4) when said support (4) is made of concrete or by chemical anchor on the surface of the support (4) when said support (4) is composed of asphalt. A method according to any one of claims 11 or 12, wherein the coating (5) comprises at least one damping layer and an aesthetic layer (52) covering the damping layer, and where, following the mixing of its components of each layer with glue, the damping layer is deposited on at least the support (4), and preferably on at least part of the fixing device (1), then the aesthetic layer (52) is deposited on at least the damping layer and preferably on at least part of the fixing device (1). A method of repairing a coating device (5) of a support (4) according to claim 1, characterized in that it comprises the following steps: - Exposing the support (4) on the part to be repaired; - Positioning and fixing of the fixing device (1) at least at the edge of the part of the support (4) to be covered; - Deposit of glue (15) on the part of the old coating (16) intended to be in contact with the new coating (5); - Mixing the coating components (5) with glue, then depositing on the fixing device (1) and on the part of the support (4) to be covered, so that the coating (5) completely covers the device fixing device (1), the fixing device (1) then being taken in the mass of the coating (5); and - Drying of the coating (5). Method according to Claim 14, in which the first fixing element (2) is a slot (10) made in the support (4) or made in an added edge (11) fixed to the support (4). A method according to claim 14, wherein the first fixing member (2) is fixed only to the surface of the support (4). A method according to any of claims 14 to 16, wherein the fastening device (1) further comprises at least one second fastening member (3) coupled to the first fastening member (2) and extending towards the end. 'inside, preferably the center, of the coating (5). A method according to claim 17, wherein the second fixing member (3) forms a mesh.

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