Patent Publication Number: US-2021189663-A1

Title: Method for manufacturing an artificial turf system and such a system

Description:
RELATED REFERENCES 
     This application is related to international patent application number PCT/EP2015/058237, filed Apr. 16, 2015 which is incorporated herein by reference. 
    
    
     FIELD OF THE INVENTION 
     Certain embodiments of the invention relate to the field of artificial turf systems and methods of manufacture. More specifically, certain embodiments of the invention relate to methods of utilizing exiting artificial turfs for manufacturing new artificial turfs, and the systems therefrom. 
     BACKGROUND OF THE INVENTION 
     Artificial turf or artificial grass is surface that is made up of fibres which is used to replace grass. The structure of the artificial turf is designed such that the artificial turf has an appearance which resembles grass. Typically, artificial turf is used as a surface for sports such as soccer, American football, rugby, tennis, golf, for playing fields, or exercise fields. Furthermore, artificial turf is frequently used for landscaping applications. An advantage of using artificial turf is that it eliminates the need to care for a grass playing or landscaping surface, like regular mowing, scarifying, fertilizing and watering. For example, watering can be difficult due to regional restrictions for water usage. In other climatic zones the re-growing of grass and re-formation of a closed grass cover is slow compared to the rate of damaging the natural grass surface by playing and/or exercising on the field. Although artificial turf fields do not require similar attention and effort to be maintained, they typically exhibit wear after a usage time of 5-15 years. Mechanical damage from use and exposure to UV radiation, thermal cycling, interactions with chemicals and various environmental conditions generate wear on artificial turf. It is therefore beneficial to efficiently and economically rejuvenate an existing worn artificial turf by manufacturing a new artificial turf reusing one or more components of the existing artificial turf. 
     US20130280445 A1 describes a system and method for recycling and repurposing a synthetic turf field cover including a pre-existing mixture of rubber and sand particles embedded in the turf material. 
     BRIEF SUMMARY OF THE INVENTION 
     Various embodiments provide a method for manufacturing an artificial turf system, an artificial turf system, and a machine for manufacturing an artificial turf system, as described by the subject matter of the independent claims. Advantageous embodiments are described in the dependent claims. Embodiments of the present invention can be freely combined with each other if they are not mutually exclusive. 
     In one aspect, the invention relates to a method for manufacturing an artificial turf system, comprising, collecting infill from an existing artificial turf, wherein the collected infill comprises collected rubber granulates, mixing the collected rubber granulates and a binding agent for generating an elastic binding composition, applying the elastic binding composition over the existing artificial turf or over a base layer, and applying a new artificial turf over the elastic binding composition. 
     In another aspect, the invention relates to a an artificial turf system, comprising a base layer and, optionally, an existing artificial turf, a new artificial turf including a plurality of artificial turf fibres and a carrier configured to carry the plurality of artificial turf fibres, and an elastic binding composition layer positioned between the base layer or the optional existing artificial turf and the new artificial turf, wherein the elastic binding composition layer comprises a mixture of infill collected from said or another existing artificial turf and a binding agent. 
     In yet another aspect, the invention relates to a machine, comprising an intake system configured to collect infill from an existing artificial turf, a mixing system configured to mix the collected infill and a binding agent for generating an elastic binding composition, and an application system configured to apply the elastic binding composition over said or another existing artificial turf or over a base layer for preparing said existing artificial turf or the base layer to receive a new artificial turf. 
    
    
     
       BRIEF DESCRIPTION OF SEVERAL VIEWS OF THE DRAWINGS 
       The following embodiments of the invention are explained in greater detail, by way of example only, making reference to the drawings in which: 
         FIG. 1  shows a cross-section of existing artificial turf, according to the prior art; 
         FIG. 2  shows a flowchart of a method of manufacturing an artificial turf system, according to an embodiment of the present invention; 
         FIG. 3  shows a cross-section of a first prepared existing artificial turf, according to an embodiment of the invention; 
         FIG. 4  shows a cross-section of a different first prepared existing artificial turf, according to another embodiment of the invention; 
         FIG. 5  shows a cross-section of a second prepared existing artificial turf, according to another embodiment of the invention; 
         FIG. 6  shows a cross-section of a new artificial turf  600 , according to an embodiment of the invention; 
         FIG. 7  shows a cross-section of an artificial turf system, according to an embodiment of the present invention; 
         FIG. 8  shows a cross-section of an artificial turf system, according to another embodiment of the present invention; and 
         FIG. 9  shows a cross-section of an artificial turf system, according to another embodiment of the invention. 
         FIG. 10  shows a cross-section of an artificial turf system, according to another embodiment of the invention. 
         FIG. 11  shows a machine for deconstructing an existing artificial turf and for creating the ECB layer according to an embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Embodiments of the invention may have the advantage that existing, worn-out artificial turf can be re-used, at least partially, for providing a new artificial turf. Thus, the amount of waste generated upon replacing worn-out artificial turf by a new one may be reduced. Furthermore, costs of the new artificial turf may be reduced, because no or less rubber granules need to be bought for providing a flooring with a defined minimum elasticity. This is because the infill of the existing, worn-out turf is reused for generating an elastic layer that is used as basis for the new artificial turf. Moreover, the elastic binding composition layer may have the advantage that the elastic binding composition (EBC) layer may homogeneously distribute mechanical forces imposed e.g. by a ball or by players of a soccer or rugby game. Thus, the rigidity of the EBC layer may ensure that the players are tiring less quickly. 
     In contrast to the artificial turf structure described in US20130280445 A1, the infill of the old turf is not recycled for use as infill of the new artificial turf, but rather for mixing the infill and optional further components such as sand and additional new infill granules with a binder to form an elastic layer (EBC layer) to be uses as basis for the new artificial turf. This may greatly increase flexibility, because the infill of the old turf may have a different color or grain size than the color or grain size desired for the new artificial turf. Moreover, as the old infill is used for providing the EBC layer, the new artificial turf may be thinner and thus cheaper than usual without reducing the elasticity of the whole system. 
     A “pile height” as used herein is the height of artificial turf fibers measured from the top surface of the backing to the top of the artificial turf. 
     The descriptions of the various embodiments of the present invention have been presented for purposes of illustration, but are not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen to best explain the principles of the embodiments, the practical application or technical improvement over technologies found in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. 
       FIG. 1  shows a cross-section of existing artificial turf  100 , according to the prior art. The existing artificial turf  100  comprises artificial turf that has been previously used and/or exposed to the natural elements. The existing artificial turf  100  comprises a carrier layer  112 , e.g. a carrier mesh, and a backing  114 , e.g. a latex backing or polyurethane backing, positioned on a bottom side of the carrier layer  112 , where the bottom side faces towards the earth. The existing artificial turf  100  also includes existing artificial turf fibers  120  that have been tufted into the carrier layer  112  as known in the art. The backing  114  may serve to mechanically bind the artificial turf fibers  120 . Various types of glues, coatings or adhesives could be used for the coating layer  114 . The backing  114  may be optional. For example, the artificial turf fibers  120  may be alternatively woven into the carrier layer  112  of the artificial turf. 
     The artificial turf fibers  120  of the existing artificial turf  100  may comprise any combination of intact fibers  120   a , shown as extending a distance L above a top surface  116  of the carrier layer, partially intact fibers  120   b  comprising fibers that have been broken or damaged in some manner, and which do not extend the distance L above the top surface  116  of the carrier layer, and non-intact fibers  120   c , which do not extend above the top surface  116  of the backing  110 . 
     Furthermore, the existing artificial turf  100  typically includes an infill layer  130  comprising infill  132  that is a loose collection of granulates arranged on the top surface  116  of the backing  110 , thereby filling the space between lower portions  122  of the artificial turf fibers  120  to a typical depth d, as in known in the art. Conventionally, the infill  132  is a rubber infill. The infill  132  may be used to enable the artificial turf fibers  120  to stand vertically up and look like a natural grass athletic field, as well as provide cushion for players on the field. Additionally, the infill  132  may emulate the feeling of natural soil and provide a realistic bounce when sports are played on the field. 
     The existing artificial turf rests  100  on a substrate  140  referred herein as “base layer”, which may be soil, cement or any other type of stable platform that offers adequate support for whatever activity the existing artificial turf  100  was designed. 
     Over time and use, including exposure to the natural elements, such as UV rays, moisture, heat, thermal cycles (i.e., freezing and thawing cycles), impact from particles carried by the wind, etc., the existing artificial turf  100  exhibits signs of wear. For example, and as illustrated to some extent by  FIG. 1 , some of the artificial turf fibers  120  may break, tear or become punctured, become loose from the carrier layer  112  and/or the optional backing  114 , or may be actual displaced or torn out of the existing artificial turf  100 . In addition, the components which comprise the artificial turf fibers  120  may break down chemically, resulting in the fibers losing a collective cushioning effect, for example, or losing mechanical properties such as rigidity and flexibility. 
       FIG. 2  illustrates a method of manufacturing  200  an artificial turf system, according to an embodiment of the present invention. In step  202 , infill of an existing artificial turf (i.e., an artificial turf that has been previously installed in the field, and presumably, used) is collected. For example, a collection machine (not shown), such as an industrial vacuum operated by a person, or an automatic, robotic machine configured to collect loose particles or debris with a mechanical or vacuum intake, collects the infill  132  of the existing artificial turf  100 , resulting in a first prepared existing artificial turf  300  as illustrated in  FIG. 3 .  FIG. 3  is similar to  FIG. 1 , having the same reference numbers for the same elements, except that the first prepared existing artificial turf  300  of  FIG. 3  does not have the infill  132  as illustrated in  FIG. 1 . In a further step  203 , the existing artificial turf is collected by the same machine that was used for collecting the infill or by a different machine. For example, the existing artificial turf can be rolled up and the rolls of used artificial turf may be transported e.g. to a landfill. Preferably, a single machine performs the collection of the infill and the collection of the rest of the existing artificial turf concurrently. 
     In one embodiment, the collected infill (not shown) comprises rubber granulates, and in another embodiment, the collected infill comprises rubber granulates and loose pieces of artificial turf fibers  120  and/or loose pieces of the backing  110 , or components of the backing  110 , that have broken off during the life of the existing artificial turf  100 . 
     In some embodiments, the collected rubber granulates may be styrene butadiene rubber (SBR) granulates, or sulphur-cured ethylene propylene diene monomer rubber (sulphur-cured EPDM) granulates, or a mixture of these granulates. In addition, or alternatively, the collected rubber granules can comprise rubber-coated granulates manufactured from natural fibers, in particular plant fibers such as burlap fibers, jute fibers, cotton fibers, wool fibers, hemp fibers, polyester fibers, natural fibers, flax fibers, kenaf fibers, nettle fibers, sisal fibers, cocos fibers, and combinations thereof. For instance, European Patent EP 2 206 833 A1 discloses a method for producing a particulate infill material for synthetic-grass structures envisages providing a mass of thermoplastic material with a filler consisting of coconut-based material and subjecting said mass of thermoplastic material with the filler consisting of coconut-based material to granulation so as to obtain the aforesaid particulate infill material. Preferentially, the thermoplastic material is in particulate form, and the coconut-based material is in particulate form (fibrous, ground and/or shredded). The mixture obtained by mixing the thermoplastic material and the coconut-based material is preferentially heated in order to bring about softening of the thermoplastic material with the corresponding formation of a matrix of thermoplastic material that incorporates the coconut-based material as filler. However, the scope of the present invention covers collected rubber granulates having all known compositions and mixtures of rubber that could be used in existing artificial turf systems. 
     In an optional step  204 , the collected infill may be filtered by the collection machine, or by another machine or device, referred to as a filter machine or filter apparatus, configured to filter loose particulate, for example, to obtain a filtered collected infill (not shown) comprising substantially of the collected rubber granulates. Additionally, the collection machine may be configured to additionally process the collected rubber granulates by, for example, reducing the size of and/or shaping the collected rubber granulates into spherically-shaped collected rubber granulates having diameters of 0.5-2.5 mm. 
     In step  206 , the collected infill, unfiltered in one embodiment and filtered in another embodiment, is mixed with a binding agent for generating an elastic binding composition, EBC. 
     In some embodiments, the collected infill and the binder is mixed with sand. In addition, or alternatively, the old, removed artificial turf is processed and mechanically and/or chemically disintegrated. For example, the collected existing artificial turf can be chopped, disrupted, cut, or the like. Thereby, fragments of the fibers of the collected artificial grass are generated. In addition, or alternatively, fragments of other worn out artificial turf fields derived from other regions can be mixed with the infill and the binder to provide fragments of fibers of used artificial turf. The fragments are mixed with the collected infill, the binder and the sand, if any, to provide the EBC. 
     In one embodiment, the binding agent is liquid polyurethane, and thus the elastic binding composition may be a polyurethane fluid comprising a suspension of the infill of the old, removed artificial turf, e.g. a suspension of styrene-butadiene granules or of sulphur-cured ethylene propylene diene monomer (EPDM) granules, that solidifies into an elastic layer. In other embodiments, the binding agent may be a mixture of polyols and polyisocyanates that solidify into polyurethane, or any other kind of fluid that is capable of solidifying after a pre-defined setting (or hardening) time into a solid layer or film. In some embodiments, the binding agent is mixed not only with the collected and optionally cleaned infill of the old artificial turf, but also with sand and/or additional rubber granules, e.g. SBR or EPDM granules, and/or with rubber-coated granulates made of plant fibers. 
     The fluid (i.e., the elastic binding composition) may solidify into a film by a drying process or by a chemical reaction resulting in a solidification of the fluid. Such a chemical reaction can be, for example, a polymerization. 
     In still another embodiment, the collected infill, unfiltered in one embodiment and filtered in another embodiment, is mixed with one of the above-describe binding agents and sand for generating the elastic binding composition. 
     In still another embodiment, the collected infill, unfiltered in one embodiment and filtered in another embodiment, is mixed with one of the above-describe binding agents and fragments generated from the removed artificial turf, in particular from fibers of the removed artificial turf, and/or sand for generating the elastic binding composition. 
     In another embodiment of the invention, the collection machine, either with or without the above-mentioned filtering apparatus, or a separate mixing apparatus or mixing machine, is configured to mix the unfiltered or filtered collected infill with the binding agent, and optional with sand, and optional with fragments of the old, removed artificial turf or with fragments of another worn-out artificial turf for generating the liquid elastic binding composition. 
     In step  208 , the liquid elastic binding composition is applied (e.g., poured) over the base layer from which the existing artificial turf was removed (not shown). 
     In alternative embodiments, step  203  is not performed and the old artificial turf is not removed. In this case, the liquid binding composition is applied on the existing artificial turf, resulting in a second prepared existing artificial turf  500  comprising an elastic binding composition layer  510  as illustrated by  FIG. 5 . The elements in common between  FIG. 5  and  FIG. 3  have the same reference numbers. 
     As shown in  FIG. 4 , in some embodiments, the artificial turf fibers  120  have been cut to be level with the top surface  116  of the artificial turf backing  110 . In one embodiment, a cutting machine or the collection machine, either with or without the above-mentioned filtering apparatus, is further configured to cut any existing artificial turf fibers, or portions of artificial turf fibers, extending above the top surface  116  of the backing  110 , after the infill is first collected. 
     In step  210 , a new artificial turf  600  (see  FIG. 6 ) is applied over the second prepared existing artificial turf  500 , resulting in the artificial turf system  700  illustrated in  FIG. 7 , according to an embodiment of the invention. 
     According to some embodiments, the new artificial turf is applied on the EBC layer after the EBC layer has solidified. This may have the advantage that the application of the new artificial turf is facilitated as the machine or person applying the new artificial turf can move over the hardened EBC layer. 
     According to some other embodiments, the new artificial turf is applied on the EBC layer before the EBC layer has solidified. This may have the advantage that the lower side of the new artificial turf gets in contact with the not-yet solidified EBC and the EBC may penetrate the backing and the carrier structure of the new artificial turf. Thus, the liquid EBC may incorporate portions of the new artificial turf and thus firmly fix the new artificial turf upon hardening. 
     According to preferred embodiments, the old, existing artificial turf is removed completely after the infill of the existing artificial turf was collected. In this case, the elastic binding composition is applied directly on the base layer. 
       FIG. 6  illustrates an exemplary embodiment of a section of new artificial turf  600 . New artificial turf  600  comprises a carrier mesh  610  and new artificial turf fibers  620 . In one embodiment, the new artificial turf fibers  620  are arranged in the carrier mesh  610 , e.g. a textile plane, by means of tufting. Tufting is a type of textile weaving in which an artificial turf fiber (that may be a monofilament or a bundle of multiple monofilaments) is inserted on a carrier mesh. After the inserting is done, as depicted in  FIG. 6 , first parts  622  of the artificial turf fibers  620  are exposed to a bottom side  612  of the carrier mesh  610  and second parts  624  of the artificial turf fibers  620  are exposed to a top side  614  of the carrier mesh  610 . Preferably, the new artificial turf further comprises a backing (not shown). After its installation, a filler is preferably added to the new artificial turf and the new, completely installed artificial turf comprises a fill layer (not shown). 
     The artificial turf system  700  illustrated in  FIG. 7  is not necessarily drawn to scale, and in addition, for ease of illustration, only a short length L 1  of the new artificial turf  600  is illustrated, however the new artificial turf  600  extends in the directions of both of the arrows to completely cover the elastic binding composition layer  510 . 
     In further embodiments of the invention, a person lays, or a machine is configured to lay, the new artificial turf  600  over the second prepared existing artificial turf  500 , or more specifically, over a top surface  512  of the elastic binding composition layer  510  of the second prepared existing artificial turf  500 . In preferred embodiments, a person lays, or a machine is configured to lay, the new artificial turf  600  over the base layer from which the old, artificial turf was removed after the old infill was collected, or more specifically, over a top surface of the elastic binding composition layer applied on top of the base layer. 
     Typically, the new artificial turf is applied after the elastic binding composition layer has hardened completely, but in some embodiments, the new artificial turf is applied before the EBC has hardened. This may increase the stability of the generated flooring, because the liquid EBC may contact and wet the lower side of the new artificial turf and thus mechanically fix the new artificial turf upon hardening. The combination of the fixation of the first parts  622  of the artificial turf fibers  620  in the hardened elastic binding composition and the fixation of middle parts  626  of the artificial turf fibers  620  in the carrier mesh  610  provide for further strong support of the new artificial turf fibers  120  in the artificial turf system  700 . 
     In another embodiment of the invention, the carrier mesh  610  may be a textile mesh or may comprise perforations that allow the fluid at the bottom side  612  of the carrier mesh  610  to flow to the upper side  614  of the carrier mesh  610 , thereby creating a portion  514  of the elastic binding composition on top of the carrier mesh  610 , as illustrated in  FIG. 7 . In this embodiment, the carrier mesh  610  and parts  626  of the fibers  120  inserted in the carrier mesh  610 , as well as some portions  628  of the second parts  624  of the fibers  120 , may become embedded and thus fixed in the hardened elastic binding composition. 
     In an optional step  212 , perforations (see  810 ,  FIG. 9 ) are made to the artificial turf system  700  or any other artificial turf system described herein to allow for drainage of water. In one embodiment, the perforations (not shown in  FIG. 7 )  810  extend through the optional portion  514  of the elastic binding composition, the carrier mesh  610 , and the elastic binding composition layer  510 , although the scope of the present invention covers perforations of all depths. 
     In step  214 , new infill  820  is added to the new artificial turf system  700  of  FIG. 7 , resulting in the new artificial turf system  800  as illustrated in  FIG. 8 , according to another embodiment of the invention.  FIG. 8  is identical to  FIG. 7 , with the same reference numbers of identical elements, with the exception of the new infill  820 . 
       FIG. 9  illustrates a cross-section of an artificial turf system  900 , manufactured by a modified version of the method  200  of  FIG. 2 , according to an embodiment of the invention. 
     The artificial turf system  900  comprises an existing artificial turf  910 , an elastic binding composition layer  920 , and a new artificial turf  930 . The existing artificial turf  910  may be the first prepared exiting artificial turf  300  illustrated by  FIG. 3 , or alternatively, the different first prepared existing artificial turf  400  as illustrated by  FIG. 4 . The existing artificial turf  910  is optional. It may lack the infill, because the infill of the existing artificial turf has been used for generating the elastic layer  920 . In some embodiments, the existing artificial turf layer  910  does not exist, because the backing, the carrier and the fibers of the existing artificial turf have been removed before the elastic layer  920  was applied. 
     The new artificial turf  930  may be the new artificial turf  600  as illustrated by  FIG. 6 . Furthermore, the elastic binding composition layer  920  may be the elastic binding composition layer  510  as illustrated by  FIG. 7  and/or  FIG. 8 . 
     As illustrated by  FIG. 9 , the new artificial turf system  900  may optionally include new infill  820  placed between the new artificial turf fibers  620  and one or more perforations  810  that may extend through the new artificial turf  930  and the elastic binding composition layer  920 , or alternatively may extend through the artificial turf system  900  to the substrate  140 , upon which the artificial turf system  900  sits. 
       FIG. 10  shows a cross-section of an artificial turf system  950  according to an embodiment of the invention. The artificial turf system  950  comprises new artificial turf  600  that was installed on top of an EBC layer  958 . The EBC layer is made from a binder, e.g. a PU binder, that was mixed with infill of an existing (worn-out) artificial turf. For example, the infill can be collected from an existing, worn-out artificial turf that was previously installed on the base layer  140  and that was later removed, e.g. after or while collecting the infill of the existing, old artificial turf. It is also possible that the infill used for generating the EBC-layer was collected from a worn-out artificial turf of a different use site. The new artificial  600  comprises a carrier layer  954 , e.g. a carrier mesh, and a backing  956 , e.g. a latex backing or polyurethane backing, positioned on a bottom side of the carrier layer  954 , where the bottom side faces towards the base layer  140 . 
     The new artificial turf  600  comprises artificial turf fibers that have been tufted or otherwise integrated into the carrier  954  as known in the art. The backing  956  may serve to mechanically bind the artificial turf fibers. Various types of glues, coatings or adhesives could be used for the backing, e.g. latex or PU, and the backing  958  may be optional. Using a backing may be beneficial, as it may increase elasticity of the artificial turf system  950 . 
     Furthermore, the new artificial turf  600  typically includes an infill layer  952  comprising infill that is a loose collection of granulates arranged on the top surface of the backing  958 , thereby filling the space between lower portions of the artificial turf fibers to a typical depth, as in known in the art. Conventionally, the infill is a rubber infill. The infill may be used to enable the artificial turf fibers to stand vertically up and look like a natural grass athletic field, as well as provide cushion for players on the field. Additionally, the infill may emulate the feeling of natural soil and provide a realistic bounce when sports are played on the field. 
     The new artificial turf  600  of the embodiment depicted in  FIG. 10  directly rests on the base layer  140 , e.g. soil, cement or any other type of stable platform that offers adequate support for whatever activity the new artificial turf  600  was designed. 
     According to embodiments, the pile height of the new artificial turf  600  is at least 5%, preferably at least 10% lower than the pile height of the removed artificial turf. Preferably, the pile height of the new artificial turf is not more than 50% lower than the pile height of the existing/removed artificial turf. In other words, the pile height of the new artificial turf is at least 50% of the pile height of the old existing/removed artificial turf. This may be beneficial, because thanks to the EBC-layer, a desired degree of elasticity may be achieved with a comparatively low pile height, and thus, with reduced production costs. 
     In addition, or alternatively, the height or thickness of the backing of the new artificial turf  600  is at least 5%, preferably at least 10% lower than the height of the backing of the removed artificial turf. This may be beneficial, because thanks to the EBC-layer, a desired degree of elasticity may be achieved with a comparatively low height of the backing, and thus, with reduced production costs. In accordance with embodiments of the invention the thickness of the backing of the new artificial turf is at least 50% of the existing or removed artificial turf. 
     In addition, or alternatively, the height of the infill of the new artificial turf, if any, is at least 5%, preferably at least 10% lower than the height of the infill of the removed artificial turf. This may be beneficial, because thanks to the EBC-layer, a desired degree of elasticity may be achieved with a comparatively low height of the filling layer, and thus, with reduced production costs. In accordance with embodiments of the invention the infill level of the new artificial turf is at least 50% of the existing or removed artificial turf. 
       FIG. 11  shows a machine  1000  for deconstructing an existing, worn-out artificial turf  1020  and for creating an EBC-layer  1024 . 
     The machine may move in the direction indicated by arrow  1026 . It comprises a first intake system  1018  having e.g. the form of a plane conveyor belt, that collects the old artificial turf and that is operatively connected to one or more rotating godets  1006  which transport the collected artificial turf and wind it onto a spool or bobbin  1004 . Thus, a roll  1022  of worn-out artificial turf is generated that can be transported to a landfill. 
     The machine  1000  further comprises a second intake system  1010  configured to collect infill from an existing artificial turf. For example, the second intake system can be an aspirator that sucks the infill particles, e.g. rubber granules, from the worn-out artificial turf while it is collected by the first intake system  1018 . An example of an infill intake system is described e.g. in US20130280445 A1. 
     The aspirated infill particles are transported via a duct  1008  to a container  1012  used for mixing the collected infill with a binder, e.g. a one component or two-component polyurethane reaction mixture. The binder can be stored in a tank  1014  connected to the container  1012  via a duct with a valve that allows a continuous adding of a defined amount if the binder. The container  1012  may comprise a stirrer or a similar device for homogeneously mixing the collected infill, the binder and any additional substances to be included in the mixture that is generated in the container  1012  and that is to be used as the EBC. The container  1012  with the stirrer and the connected one or more tanks  1014  and ducts  1008  provide a mixing system configured to mix the collected infill and the binding agent for generating the elastic binding composition. The binding composition is transported via a further duct  1016  to an application system  1002  configured to apply the elastic binding composition over said a base layer  1026  for preparing said base layer to receive a new artificial turf. For example, the application system  1002  can be a nozzle  1002  that applies and optionally levels the elastic binding composition on the ground. 
     The vehicle  1000  can optionally comprise a cleaning unit  1019  that cleans the collected infill from debris before the cleaned infill is added to the container  1012 .