RU2816081C1 - Method of making a two-layer safety coating - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to the field of construction and relates to a method of making a two-layer injury-proof coating intended for laying on various surfaces in areas located both indoors and outdoors. Method involves preparation of a mixture for the lower and upper layers of materials, successive laying out of the mixture of each layer. To prepare a mixture of the lower layer of material, a binder is mixed — polyurethane glue, granular ethylene vinyl acetate (EVA) and rubber granules in a certain amount per square meter and with a thickness of the lower layer of 10 mm, then the obtained mixture is laid on the prepared surface, levelled, held until hardened and primed, to prepare a mixture of the upper layer of the material, the following components are mixed in a certain amount per one square meter and with a thickness of the upper layer of 10 mm: hardened binder — polyurethane adhesive with granular ethylene-propylene rubber (EPDM), or with vulcanised thermoplastic elastomer (TPV), or with thermoplastic vulcanised rubber or mixing hardened binder — polyurethane adhesive with rubber granules and colouring pigments, after that, the obtained mixture is discharged onto the lower layer, levelled and held until hardening; at that, the above layers are connected to each other by forming a single monolithic two-layer coating.

EFFECT: invention provides an increase in the reliability, safety of the two-layer coating obtained using the disclosed method, as well as an increase in its shock-absorbing properties with simultaneous increase in wear resistance, improved environmental situation due to recycling of large-tonnage production wastes from ethylene vinyl acetate (EVA) thermoplastics.

6 cl, 11 ex

Description

The inventions relate to the field of construction, in particular to a method for producing a two-layer coating intended for laying on various surfaces in areas located both indoors and outdoors, intended for children to play, play sports, and can be used as a surface on which the user may fall after a fall, including falling from equipment, areas where climbing, braking and stopping are carried out - slides, slopes, tunnels, geoplastic elements and artificial terrain.

There is a known method of manufacturing a coating for sports games, including the preparation of layers, while the bottom layer of the specified coating, laid on the base, forms a porous structure containing a polyurethane polymer and rubber crumb with a particle size of 0.5-8.0 mm at a mixture ratio of 8 -15 parts by weight of crumb rubber particles and 2-5 parts by weight of cross-linkable polyurethane elastomer, then apply liquid polyurethane sealant, followed by water-based polyurethane or acrylic latex, then fiberglass or non-woven material and again water-based polyurethane or acrylic latex , completed with a top wear-resistant layer of acrylic latex. Rubber crumbs have a size of 0.5-5.0 mm. The top wear-resistant layer of acrylic latex may contain pigment. The porous layer can be manufactured directly on site or assembled from pre-fabricated sheets of at least partially polymerized polyurethane polymer, the sheets being positioned end to end to form a continuous coating (see source: SU 1828477 A3, published 07/15/1993).

The disadvantages of this known method are labor-intensive manufacturing, insufficient shock-absorbing properties and environmental friendliness, low strength, and over time, with intensive use, such a coating begins to crumble.

The closest in technical essence to the proposed one is a method for manufacturing a rubber coating, which consists of at least two layers of polymer material, an upper working layer and a lower supporting layer, which are a hardened binder based on a polymer material with a filler in the form of rubber crumbs placed in it . The coating layers are interconnected with the possibility of forming a monolithic one-piece coating. Between the layers there is a heating element in the form of an electrically conductive flexible polymer heating mesh. The top working layer of the coating has a thickness of no more than 4.0 mm and contains rubber crumb filler with a fraction ranging in size from 0.63 mm to 2.5 mm. The bottom layer of the coating has a thickness from 6.0 mm to 40.0 mm and contains filler with a fraction ranging in size from 1.5 mm to 5.0 mm. (see source: RU 2552482 C1, published 04/17/2015).

The disadvantages of this known method are low shock-absorbing properties and environmental friendliness, uneven distribution of dynamic power loads in it, which leads to a decrease in the reliability of the coating and a possible increase in user injuries, and insufficient safety of the coating.

The problem solved by the claimed invention is to create a method for obtaining a reliable injury-proof coating that has high shock-absorbing properties and at the same time wear resistance while reducing the labor intensity of manufacturing the coating.

The technical result achieved by the claimed invention is to increase the reliability and safety of injuries of the two-layer coating obtained by the claimed method, as well as to increase its shock-absorbing properties while simultaneously increasing wear resistance, improving the environmental situation by recycling large-scale production waste from thermoplastic ethylene vinyl acetate (EVA).

The claimed technical result is achieved due to the fact that the method for producing a two-layer safety coating includes preparing a mixture for the bottom and top layers of materials, sequentially laying out the mixture of each layer, while to prepare the mixture of the bottom layer of material, a binder is mixed - polyurethane glue, granulated ethylene vinyl acetate (EVA) with fraction sizes from 1 mm to 50 mm and rubber granules with fraction sizes from 1 mm to 8 mm, while the quantity per 1 square meter and a bottom layer thickness of 10 mm is:

- polyurethane glue from 1.1 kg to 1.5 kg; EVA from 0.1 kg to 0.9 kg;

- rubber granules from 1.2 kg to 5.4 kg, after which the resulting mixture is laid out on the prepared surface, leveled, kept until cured and primed, to prepare the mixture of the top layer of material is mixed, based on 1 square meter and the thickness of the top layer is 10 mm , the following components: hardened binder - polyurethane glue in an amount from 1.2 kg to 1.7 kg with granulated ethylene-propylene rubber (EPDM) in an amount from 9 kg to 11 kg with a fraction size from 1 mm to 5 mm or with vulcanized thermoplastic elastomers (TPV) in an amount from 9 kg to 11 kg with a fraction size from 1 mm to 5 mm or with thermoplastic vulcanized rubber in an amount from 9 kg to 11 kg with a fraction size from 1 mm to 5 mm or mix the hardened binder - polyurethane glue in an amount from 1.2 kg to 1.8 kg with rubber granules in an amount from 5 kg to 7 kg with fraction sizes from 1 mm to 5 mm and coloring pigments in an amount from 0.2 kg to 0.45 kg, Afterwards, the resulting mixture is unloaded onto the bottom layer, leveled, and kept until cured, while these layers are interconnected to form a single monolithic two-layer coating.

In a particular embodiment, the thickness of the bottom layer ranges from 10 mm, and the thickness of the top layer ranges from 10 mm to 30 mm.

In a particular implementation, a diphenylmethane diisocyanate (MDI) prepolymer and/or an aliphatic isocyanate prepolymer is used as the base of the polyurethane adhesive.

Rubber granules are obtained by processing worn tires and rubber products (RTI).

In a particular implementation, these layers are connected to each other using a primer.

As a primer, use diphenylmethane diisocyanate (MDI) prepolymer or a mixture of polyurethane binder based on diphenylmethane diisocyanate (MDI) prepolymer in an amount of 0.5 kg to 1.5 kg, depending on the porosity of the base.

A two-layer safety coating can be laid on various surfaces in areas located both indoors and outdoors; it can be used on a solid base (asphalt, concrete) or on a compacted base made of crushed stone (screenings).

To make the bottom layer, which performs a shock-absorbing function and is wear-resistant and injury-proof, a binder - polyurethane glue, granulated ethylene vinyl acetate (EVA) with fraction sizes from 1 mm to 50 mm and rubber granules with fraction sizes from 1 mm to 8 mm, while the quantity per 1 square meter and the thickness of the bottom layer is 10 mm is: - polyurethane glue from 1.1 kg to 1.5 kg; - EVA from 0.1 kg to 0.9 kg; - rubber granules from 1.2 kg to 5.4 kg. Granulated ethylene vinyl acetate is obtained by processing (grinding, crushing) raw materials to be recycled into fractional granules. Rubber granules are obtained by processing worn tires and rubber products (RTI). Polyurethane adhesive (binder) is based on the prepolymer diphenylmethane diisocyanate (MDI).

Based on the tests carried out, it was established that the amount of polyurethane glue per 1 ^m2 with a layer thickness of 10 mm is from 1.1 kg to 1.5 kg, ensures uniform coverage of EVA granules in an amount from 0.1 kg to 0. 9 kg with fraction sizes from 1 mm to 50 mm and with rubber granules in quantities from 1.2 kg to 5.4 kg with fraction sizes from 1 mm to 8 mm for binding action. The cured binder creates a dense, monolithic mass with no shortage or excess of polyurethane binder and ensures uniform distribution of both rubber and EVA granules over the surface for bonding to each other.

When the polyurethane adhesive content is below 1.1 kg per 1 m ² of coating area made by the claimed method, with a layer thickness of 10 mm, rubber granules and EVA granules in the mass do not have the required amount of binder to ensure the bonds of the granules. The hardened mass can collapse (crumple) without ensuring the density, reliability and safety of the two-layer coating, and its shock-absorbing properties are also reduced due to the destruction of the lower layer - the substrate.

When the content of polyurethane glue is more than 1.5 kg, an excess of polyurethane binder appears, which may not be evenly distributed throughout the mass. An excess of polyurethane binder leads to the formation of local areas with a pronounced hardened structure. There may be bumps and swelling in the mass. The presence of excessive binder in the mass leads to a lack of safety and shock-absorbing characteristics of both the lowest layer and the two-layer coating as a whole.

Based on the tests carried out, it was established that the amount of EVA granules per 1 m ² of coating area made by the claimed method, with a thickness of 10 mm, is from 0.1 kg to 0.9 kg with a fraction size from 1 mm to 50 mm and with rubber granules in quantities from 1.2 kg to 5.4 kg with fraction sizes from 1 mm to 8 mm ensures close contact of granules of two types with each other's edges, creating a monolithic mass, and also ensures optimal shock-absorbing properties of a two-layer coating made by the stated way, due to the joint use in one lower layer - the substrate of two types of granules - EVA and rubber in the indicated ranges, allowing for the simultaneous manifestation of both elastic and rigid properties of the lower layer, resulting in increased wear resistance with simultaneous improvement in shock absorption.

When the amount of rubber granules is higher than 0.9 kg, the hardened mass may be less dense, not providing reliability and sufficient shock absorption.

When the number of EVA granules is below 0.1 kg, it will significantly reduce the shock-absorbing properties of a two-layer coating made by the claimed method; an excess of the required polyurethane binder also appears, which may not be evenly distributed throughout the mass. An excess of polyurethane binder leads to the formation of local areas with a pronounced hardened structure. There may be bumps and swelling in the mass. The presence of excessive binder in the mass leads to a lack of safety and shock-absorbing characteristics.

Based on the tests carried out on a two-layer anti-traumatic coating made by the claimed method, it was revealed that if the size of the EVA granule fractions is less than 1 mm, the specified layer and the entire two-layer coating will exhibit insufficient damping and shock-absorbing properties.

And when the size of the EVA granule fractions is more than 50 mm, the specified layer and the entire declared two-layer coating will also exhibit insufficient damping and shock-absorbing properties, due to the insufficient density of the lower layer.

The number of rubber granules - from 1.2 kg to 5.4 kg ensures close contact of the edges with each other, creating a monolithic mass.

If the quantity of rubber granules is higher than 5.4 kg, the hardened mass may collapse (crumple), not providing reliability and sufficient shock absorption.

When the amount of rubber granules is below 1.2 kg, an excess of the required polyurethane binder appears, which may be unevenly distributed throughout the mass. An excess of polyurethane binder leads to the formation of local areas with a pronounced hardened structure. There may be bumps and swelling in the mass. The presence of excessive binder in the mass leads to a lack of safety and shock-absorbing characteristics.

To ensure maximum damping properties, shock absorption and wear resistance in conjunction with the top layer of material located above the bottom layer of material, the fractional composition of two types of granules should be: EVA - fraction size from 1 mm to 50 mm and rubber granules with fraction size from 1 mm to 8 mm. Based on the tests carried out on a two-layer anti-traumatic coating manufactured by the claimed method, it was revealed that if the size of the rubber granule fractions is less than 1 mm, the specified layer and the entire two-layer coating will exhibit insufficient damping and shock-absorbing properties.

And when the size of the rubber granule fractions is more than 8 mm, the specified bottom layer and the entire two-layer coating will also exhibit insufficient damping and shock-absorbing properties, due to the insufficient density of the bottom layer.

To prepare a mixture of the top layer of material, the following components are mixed, based on 1 square meter and a top layer thickness of 10 mm: hardened binder - polyurethane glue in an amount of 1.2 kg to 1.7 kg with granulated ethylene-propylene rubber (EPDM ) in an amount from 9 kg to 11 kg with a fraction size from 1 mm to 5 mm or with vulcanized thermoplastic elastomers (TPV) in an amount from 9 kg to 11 kg with a fraction size from 1 mm to 5 mm or with thermoplastic vulcanized rubber in an amount from 9 kg to 11 kg with fraction sizes from 1 mm to 5 mm or mix the hardened binder - polyurethane glue in an amount from 1.2 kg to 1.8 kg with rubber granules in an amount from 5 kg to 7 kg with a fraction size from 1 mm to 5 mm and coloring pigments in an amount from 0.2 kg to 0.45 kg, after which the resulting mixture is unloaded onto the bottom layer, leveled, kept until cured, while these layers are interconnected to form a single monolithic two-layer coating.

Polyurethane adhesive (binder) is used based on a diphenylmethane diisocyanate (MDI) prepolymer and/or an aliphatic isocyanate prepolymer.

In particular, polyurethane adhesive in a mixture with granulated ethylene-propylene rubber (EPDM) or in a mixture with rubber granules is used based on a diphenylmethane diisocyanate (MDI) prepolymer, and in a mixture with vulcanized thermoplastic elastomers (TPV) or thermoplastic vulcanized rubber, an aliphatic isocyanate prepolymer is used .

Color pigments can be dry or liquid pigments.

The amount of polyurethane glue - from 1.2 kg to 1.7 kg per 1 square meter and a top layer thickness of 10 mm, ensures uniform coverage of EPDM granules in an amount from 9 kg to 11 kg per 1 square meter and a top layer thickness of 10 mm, with fraction sizes from 1 mm to 5 or TPV granules in an amount from 9 kg to 11 kg per 1 square meter and a top layer thickness of 10 mm, with a fraction size from 1 mm to 5 or thermoplastic vulcanized rubber in an amount from 9 kg to 11 kg per 1 square meter and a top layer thickness of 10 mm, with fraction sizes from 1 mm to 5 for binding action. The hardened binder creates a dense monolithic mass without a shortage or excess of polyurethane binder and ensures uniform distribution over the surface of the granules for gluing them to each other.

When the content of polyurethane glue is less than 1.2 kg per 1 square meter and the thickness of the top layer is 10 mm, these granules in the mass do not have the required amount of binder to ensure the bonds of the granules. The hardened mass can collapse (crumple) without providing density and reliability.

When the content of polyurethane glue is more than 1.7 kg per 1 square meter and the thickness of the top layer is 10 mm, an excess of polyurethane binder appears, which may not be evenly distributed throughout the mass. An excess of polyurethane binder leads to the formation of local areas with a pronounced hardened structure. There may be bumps and swelling in the mass. The presence of excessive binder in the mass leads to a lack of safety and shock-absorbing characteristics.

The number of rubber granules is from 9 kg to 11 kg per 1 square meter and the thickness of the top layer is 10 mm, ensuring close contact of the edges with each other, creating a monolithic mass.

If the number of these granules is more than 11 kg per 1 square meter and the thickness of the top layer is 10 mm, it will lead to the fact that the hardened mass can collapse (crumple), not providing reliability and sufficient shock absorption.

When the number of these granules is less than 9 kg per 1 square meter and the thickness of the top layer is 10 mm, an excess of the required polyurethane binder appears, which may not be evenly distributed throughout the mass. An excess of polyurethane binder leads to the formation of local areas with a pronounced hardened structure. There may be bumps and swelling in the mass. The presence of excessive binder in the mass leads to a lack of safety and shock-absorbing characteristics.

The same applies to the content of a hardened binder in the mixture - polyurethane glue in an amount from 1.2 kg to 1.8 kg per 1 square meter and a top layer thickness of 10 mm, with rubber granules in an amount from 5 kg to 7 kg per 1 square meter and a top layer thickness of 10 mm, with fraction sizes from 1 mm to 5 mm and coloring pigments in quantities from 0.2 kg to 0.45 kg per 1 square meter and a top layer thickness of 10 mm.

Based on the tests carried out on a two-layer anti-traumatic coating manufactured by the claimed method, it was revealed that if the size of the fractions of the specified granules is less than 1 mm, the top layer and the entire two-layer coating will exhibit insufficient damping and shock-absorbing properties, and will also be worse for rolling and operation.

And if the size of the fractions of these granules is more than 5 mm, the top layer and the entire two-layer coating will also exhibit insufficient damping and shock-absorbing properties, due to the insufficient density of the top layer, and will also roll worse and scuff up during operation.

The thickness of the top layer is from 10 mm to 30 mm (multiples of 10 mm). The thickness is selected based on the requirement for injury safety (shock absorption) when designing the facility.

The top layer performs a shock-absorbing function and is also decorative with injury-proof and wear-resistant characteristics.

A primer (Primer) is used between layers and on the base (under the bottom layer). As a primer base, a diphenylmethane diisocyanate (MDI) prepolymer or a mixture of a polyurethane binder based on a diphenylmethane diisocyanate (MDI) prepolymer in an amount of 0.5 kg to 1.5 kg is used, depending on the porosity of the base.

Turpentine or white spirit or solvent or gasoline are used as a solvent.

The primer (Primer) ensures gluing of the layers of a two-layer safety coating made by the claimed method to each other and form a single monolithic coating.

The primer also ensures adhesion to solid substrates (asphalt, concrete). In the case of laying the bottom layer on a base made of compacted crushed stone (screenings), applying a primer (Primer) to the crushed stone (screenings) is not necessary.

Granulated ethylene vinyl acetate (designation EVA or EVA) can be used from the manufacturer RUBBER DUST PRODUCTION LLC, obtained from raw materials to be recycled or analogues. EVA material has a high level of environmental safety.

Rubber granules obtained by processing worn tires and rubber goods into rubber crumbs (fractional granules) can be used from manufacturers - RUBBER DUST PRODUCTION LLC, Gambit LLC, Oris Prom LLC, Dmitrovsky Rubber Rubber Plant LLC or analogues.

EPDM from manufacturers - Granulos LLC, EPDM.RU LLC or analogs can be used as granular ethylene-propylene rubbers (designation EPDM or EPDM).

Granular vulcanized thermoplastic elastomers (TPV or TPV) or thermoplastic vulcanized rubbers can be used from manufacturers - Granulos LLC, Rosehill or analogues.

As pigments - manufacturer SHANGHAI YIPIN PIGMENTS CO. or analogues.

The polyurethane adhesive (a binder based on diphenylmethane diisocyanate prepolymer) can be used, for example, POLYPLAST 1004, manufactured by Huntsman NMG JSC; GAMBIT-M, manufactured by Gambit LLC; WANNATE 6112, manufactured by Yantai Wanhua Polyurethanes Co.; VORAMER MR 1045, 1177, manufacturer "DOW"; Glue ISOLAN-77, manufactured by DAU Izolan LLC or analogues.

As a polyurethane glue (the base binder is an aliphatic isocyanate prepolymer), for example, POLYPLAST 101, manufactured by Huntsman NMG JSC or analogs can be used.

Primer (Primer) in the case of hard bases/surfaces (asphalt, concrete) is used, for example, - Universal primer “Primer Gambit”, manufactured by Gambit LLC, Primer 1101 manufactured by JSC “Hantsman NMG”.

A two-layer safety coating made by the claimed method can be laid on various surfaces in areas located both indoors and outdoors; it can be used on a solid base (asphalt, concrete) and on a compacted base made of crushed stone (screenings).

To produce the bottom layer of a two-layer safety coating made by the claimed method, granulated EVA of the required fractional composition, rubber granules of the required fractional composition, for example, obtained by processing worn tires and rubber goods into rubber crumbs (fractional granules) and polyurethane adhesive based on a prepolymer of diphenylmethane diisocyanate (MDI) ) mix in a mixer (barrel mixer, for mixing granular materials or equivalent) until smooth. The resulting mixture is laid out on a solid, prepared base/surface, for example, asphalt, concrete, treated with a primer (Primer). The mass is leveled and compacted manually using polyurethane rollers, floats, trowels, and trowels to the required thickness and kept until completely cured.

To produce the top layer of a two-layer safety coating made by the claimed method, granulated EPDM of the required fractional composition and polyurethane adhesive (binder) based on diphenylmethane diisocyanate (MDI) prepolymer are mixed in a mixer (barrel mixer, for mixing granular materials or an analogue) until smooth. The resulting mixture is laid out on the bottom layer treated (coated) with a primer (Primer). The mass is leveled and compacted manually using polyurethane rollers, floats, trowels, and trowels to the required thickness and kept until completely cured.

In another embodiment, to produce the top layer of a two-layer safety coating, granular vulcanized TPV or thermoplastic vulcanized rubber and polyurethane adhesive (binder) based on an aliphatic isocyanate prepolymer are mixed in a mixer (barrel mixer, for mixing granular materials, or similar) until smooth. The resulting mixture is laid out on the bottom layer treated (coated) with a primer (Primer). The mass is leveled and compacted manually using polyurethane rollers, floats, trowels, and trowels to the required thickness and kept until completely cured.

In another option, for the production of the top layer of a two-layer safety coating, rubber granules obtained by processing worn tires and rubber goods into rubber into crumbs (fractional granules) of the required fractional composition and polyurethane adhesive (binder) based on a prepolymer of diphenylmethane diisocyanate (MDI), as well as dry or liquid the pigments are mixed in a mixer (barrel mixer, for mixing granular materials, or similar) until smooth. The resulting mixture is laid out on the bottom layer treated (coated) with a primer (Primer). The mass is leveled and compacted manually using polyurethane rollers, floats, trowels, and trowels to the required thickness and kept until completely cured.

The following example is provided to provide those skilled in the art with a complete disclosure of the invention and is intended only as an example and not as a limitation of the invention.

Example

A method for manufacturing a two-layer safety coating includes preparing a mixture for the bottom and top layers of materials, sequentially laying out the mixture of each layer. To prepare a mixture of the bottom layer of material, a binder is mixed - polyurethane glue, granulated ethylene vinyl acetate (EVA) with fraction sizes from 1 mm to 50 mm and rubber granules with fraction sizes from 1 mm to 8 mm, with the amount per 1 square meter and the thickness of the bottom layer 10 mm is:

- polyurethane glue from 1.1 kg to 1.5 kg;

- EVA from 0.1 kg to 0.9 kg;

- rubber granules from 1.2 kg to 5.4 kg, after which the resulting mixture is laid out on the prepared surface, leveled, kept until cured and primed, to prepare the mixture of the top layer of material is mixed, based on 1 square meter and the thickness of the top layer is 10 mm , the following components: hardened binder - polyurethane glue in an amount from 1.2 kg to 1.7 kg with granulated ethylene-propylene rubber (EPDM) in an amount from 9 kg to 11 kg with a fraction size from 1 mm to 5 mm or with vulcanized thermoplastic elastomers (TPV) in an amount from 9 kg to 11 kg with a fraction size from 1 mm to 5 mm or with thermoplastic vulcanized rubber in an amount from 9 kg to 11 kg with a fraction size from 1 mm to 5 mm or mix the hardened binder - polyurethane glue in an amount from 1.2 kg to 1.8 kg with rubber granules in an amount from 5 kg to 7 kg with fraction sizes from 1 mm to 5 mm and coloring pigments in an amount from 0.2 kg to 0.45 kg, Afterwards, the resulting mixture is unloaded onto the bottom layer, leveled, and kept until cured, while these layers are interconnected to form a single monolithic two-layer coating.

These layers are bonded together using a primer; diphenylmethane diisocyanate (MDI) prepolymer or a mixture of polyurethane binder based on diphenylmethane diisocyanate (MDI) prepolymer in an amount of 0.5 kg to 1.5 kg is used as a primer, depending on the porosity of the base. Turpentine or white spirit or solvent or gasoline were used as a solvent.

To obtain a bottom layer of material with an area of 1 m ² and a thickness of 10 mm.

Example 1

Example 2

Example 3

Example 4

Example 5

To obtain a top layer of material with an area of 1 m ² and a thickness of 10 mm.

Example 6

Example 7

Example 8

Example 9

Example 10

Example 11

Tests were carried out on samples of a two-layer injury-proof coating manufactured by the claimed method, as a result of which an unexpected synergistic effect was noted due to a certain arrangement of words relative to each other in conjunction with the claimed ranges of component ratios, as well as ranges of sizes of selected fractions, which led to increased reliability and injury safety of the two-layer coating, as well as increasing its shock-absorbing properties with simultaneous wear resistance.

Claims (9)

1. A method for manufacturing a two-layer safety coating, including preparing a mixture for the bottom and top layers of materials, sequentially laying out the mixture of each layer, characterized in that to prepare the mixture of the bottom layer of material, a binder is mixed - polyurethane glue, granulated ethylene vinyl acetate (EVA) with fraction sizes from 1 to 50 mm and rubber granules with fraction sizes from 1 to 8 mm, while the quantity per 1 square meter and the thickness of the bottom layer of 10 mm is: - polyurethane glue from 1.1 to 1.5 kg; - EVA from 0.1 to 0.9 kg; - rubber granules from 1.2 to 5.4 kg, after which the resulting mixture is laid out on the prepared surface, leveled, kept until cured and primed, to prepare the mixture of the top layer of material is mixed, per 1 square meter and with a thickness of the top layer of 10 mm , the following components: hardened binder - polyurethane glue in an amount of 1.2 to 1.7 kg with granulated ethylene-propylene rubber (EPDM) in an amount of 9 to 11 kg with a fraction size of 1 to 5 mm or with vulcanized thermoplastic elastomers ( TPV) in an amount of 9 to 11 kg with a fraction size of 1 to 5 mm or with thermoplastic vulcanized rubber in an amount of 9 to 11 kg with a fraction size of 1 to 5 mm or mix a hardened binder - polyurethane glue in an amount of 1, 2 to 1.8 kg with rubber granules in an amount from 5 to 7 kg with a fraction size from 1 to 5 mm and coloring pigments in an amount from 0.2 to 0.45 kg, after which the resulting mixture is unloaded onto the bottom layer, leveled, and kept before curing, while these layers are interconnected to form a single monolithic two-layer coating. 2. The method according to claim 1, characterized in that the bottom layer is laid out with a thickness of 10 mm or more. 3. Method according to claim 1, characterized in that the top layer is laid out with a thickness of 10 to 30 mm. 4. The method according to claim 1, characterized in that a diphenylmethane diisocyanate (MDI) prepolymer and/or an aliphatic isocyanate prepolymer is used as the base of the polyurethane adhesive. 5. The method according to claim 1, characterized in that rubber granules are obtained by processing worn tires and rubber products (RTI). 6. The method according to claim 1, characterized in that a diphenylmethane diisocyanate (MDI) prepolymer or a mixture of a polyurethane binder based on a diphenylmethane diisocyanate (MDI) prepolymer in an amount of 0.5 kg to 1.5 kg is used as a primer, depending on the porosity of the base.