EP2664711B1 - Gazon artificiel - Google Patents

Gazon artificiel Download PDF

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Publication number
EP2664711B1
EP2664711B1 EP12003828.6A EP12003828A EP2664711B1 EP 2664711 B1 EP2664711 B1 EP 2664711B1 EP 12003828 A EP12003828 A EP 12003828A EP 2664711 B1 EP2664711 B1 EP 2664711B1
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EP
European Patent Office
Prior art keywords
artificial turf
pile
turf surface
pile threads
layer
Prior art date
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Active
Application number
EP12003828.6A
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German (de)
English (en)
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EP2664711A1 (fr
Inventor
Kasper Zogg
Peter Signer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tiara-Teppichboden AG
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Tiara-Teppichboden AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to EP12003828.6A priority Critical patent/EP2664711B1/fr
Priority to ES12003828.6T priority patent/ES2582466T3/es
Publication of EP2664711A1 publication Critical patent/EP2664711A1/fr
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Publication of EP2664711B1 publication Critical patent/EP2664711B1/fr
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
    • E01C13/04—Pavings made of prefabricated single units
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
    • E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds

Definitions

  • the present invention relates to an artificial turf covering having a special supporting layer which is particularly suitable for use in a temporary sports or playground.
  • Artificial grass coverings are often used as an alternative to a natural lawn, especially on sports grounds and playgrounds. Compared to the latter, artificial grass coverings have the advantage that they have a higher load capacity and are relatively easy to care for. Therefore, they are especially useful for football or rugby courts. In addition, they are well playable compared to a natural lawn even in bad weather.
  • Such artificial turf coverings typically comprise a turf formed by plastic pile threads mounted on a support.
  • EP 1 696 077 on the support to provide a support layer which encloses the pile threads following the support. If a pile yarn is deflected from its original position as a result of a force, this backing layer prevents that the pile yarn is deflected directly on the carrier. In addition, the support layer supports the return of the pile threads.
  • the pile threads In order to avoid a "lying" of the pile threads of an artificial turf, it is additionally advantageous if the pile threads already have a high resilience per se. At the same time it is also important that the pile threads are made of a material which does not cause skin burns when a user slides over the artificial turf at a relatively high speed.
  • EP 2 395 135 a plastic fiber for an artificial turf covering comprising two different plastic components.
  • a first plastic component is embedded with a higher resilience in a second, particularly skin-friendly plastic component.
  • the DIN EN 15336 standard requires at least 50% reduction in force and at least 55% FIFA 1 * for artificial grass surfaces on football pitches.
  • the damping layer consists of an elastic material, for example, bonded splinters of styrene-butadiene rubber (SBR) and / or cellular foams of polyurethane (PU), polyethylene (PE) or expanded polypropylene (EPP).
  • SBR styrene-butadiene rubber
  • PU polyurethane
  • PE polyethylene
  • EPP expanded polypropylene
  • the Damping layer is usually provided as a roll with a thickness from about 6 mm or in the form of individual tiles (also referred to as panels) or as a whole with a thickness of up to 30 mm and attached to the substrate. Prefabricated rolls or tiles are typically laid loosely and bonded together by means of adhesive tape or with puzzle or grooved comb systems or the like.
  • SBR splinters can be discharged together with adhesive in pasty form as a whole damping layer on the substrate.
  • EP 1 983 104 discloses an artificial turf having a base layer and a plurality of blades fixed to the base layer. On the base layer and between the blades, a damping material is arranged, which consists of multi-component plastic fibers. A backfilling should not be necessary in this case, in order to achieve the desired damping properties.
  • improved shock absorption can also be achieved by applying a plastic granulate to the support of the artificial turf covering, such as in FIG EP 2 331 56 disclosed to be achieved.
  • Such artificial turf coverings are also referred to as "filled in”.
  • the artificial turf covering according to the invention comprises a flat carrier with a top side and a bottom side, a turf formed by pile threads which are connected to the carrier, and a support layer, which is arranged on the upper side of the carrier and penetrated by the tuft threads of the turf, which exclusively consists of Support filaments exists.
  • the artificial turf covering according to the invention is characterized in that the supporting layer has a height of at least 2 cm and a density of at least 0.095 g / cm 3 and that the supporting layer consists of polyamide or polyurethane.
  • the supporting layer not only serves to erect deflected pile threads, but also gives the artificial turf covering sufficient shock absorption at the same time. As a result, it is not necessary to additionally use a granulate or a damping layer.
  • the inventive artificial turf flooring thus provides a complete solution for a turf that can be very easily transported, installed and also removed again. It is therefore particularly suitable for short-term applications in which the artificial turf is to be used only temporarily.
  • the weight of the material needed for the artificial turf flooring is significantly reduced due to the elimination of the need for a cushioning layer or plastic granulate compared to previous solutions.
  • the artificial turf flooring according to the invention can be designed directly on a substrate without the need for an additional damping layer for shock absorption.
  • the force reduction of the inventive turf is about 55-57%. This value is above the 50% required by DIN EN 15336 and 55% by FIFA 1 *. It is therefore ideal for sports applications, in particular for football or rugby.
  • the elastic properties of the artificial turf covering according to the invention which ensure shock absorption, do not decrease due to mechanical stress, so that it can be used over a longer period of time and / or multiple times.
  • a flat carrier is used, as of the prior art (eg EP 2 333 156 ) is known.
  • This is preferably dimensionally stable and therefore has a high local strength.
  • the material for the support for example, polypropylene, polyester, polyamide and / or a material containing glass fibers may be used.
  • the carrier can be one or more layers and additionally comprise a glass substrate containing auxiliary carrier.
  • the support layer according to the invention consists exclusively of support filaments, which are usually somewhat shorter than the pile threads of the turf and are arranged between these pile threads. Both pile threads and support filaments are connected to the carrier, for example by tufting.
  • the supporting layer consists exclusively of supporting filaments. This allows a particularly simple production of the artificial turf flooring according to the invention.
  • the artificial turf covering according to the invention can be produced by tufting in a single working step, wherein both the pile threads and the supporting filaments are connected to the carrier.
  • the support layer comprises, in addition to the support filaments, a felt support arranged on the upper side of the flat support. This felt pad is also penetrated by the pile threads and support filaments.
  • the support layer consists of polyamide or polyurethane. These materials are particularly suitable for the production of support filaments and / or a felt pad. Particularly preferably, the support layer consists of polyamide.
  • the support filaments of the support layer are crimped or textured.
  • Such a crimped or textured structure is achieved by well known processes in the manufacture of the support filaments.
  • Curled or textured design not only the support and shock absorption of the support layer are further improved, but also the grip of the artificial turf surface as a whole.
  • the pile threads of the turf pile consist of a first component of polyethylene and a second component of polyamide embedded in the first component.
  • Such pile threads are in the EP 2 395 135 , the disclosure of which is incorporated herein by reference in its entirety. These pile threads are characterized by a particularly good resilience and a very good skin compatibility. Additionally or alternatively, the in EP 2 395 135 disclosed fibers are also used for the supporting filaments of the inventive synthetic turf flooring.
  • the pile threads of the turf pile measured from the top of the wearer have a length of 2.5 to 4.0 cm. This length corresponds to a standard lawn height for playing and sports fields.
  • a first part of the pile threads of the turf measured from the surface of the wearer, is longer than a second part of the pile threads of the turf, in particular by 5 to 10 mm longer.
  • this embodiment allows on the one hand, to obtain a deceptively similar looking appearance of high authenticity compared to a natural turf.
  • This can be further increased by the fact that different green shades are used for the pile threads of the first part and the pile threads of the second part.
  • a lighter green is used for the pile threads of the second part than for the pile threads of the first part.
  • the said embodiment makes it possible to optimize the ball rolling behavior and the ball rebound behavior, in particular with regard to the use of the artificial turf covering for a soccer field.
  • the turf according to the invention is preferably produced by means of a tufting process. This allows a very simple production of artificial turf flooring and a secure connection of the pile threads with the wearer.
  • the turf preferably has a stitch density in the range of 20,000 to 30,000 per square meter.
  • the yarn count of the pile yarns is preferably in a range of 1'000 to 2'000 dtex per pile yarn.
  • the supporting filaments of the support layer are also connected to the carrier by means of tufting.
  • the artificial turf covering according to the invention is unfilled, that is to say that it is not filled with granules or a similar material, e.g. B. sand, is provided.
  • granules or a similar material e.g. B. sand
  • the present invention relates to the use of the artificial turf flooring according to the invention for a sports field or playground, in particular for a football field or a rugby court.
  • the artificial turf is arranged on a solid surface.
  • no damping layer is arranged between the artificial turf covering and the substrate. A particularly high local strength is achieved when the artificial turf covering is screwed or glued to the substrate at the edge of the sports or playground.
  • the artificial turf flooring according to the invention can be easily and quickly laid out at the desired location and can be transported there very easily. It is therefore particularly suitable for use in the field of small playgrounds or for the summer use of artificial ice rinks as well as for indoor or outdoor events in which the artificial turf is to be used only for a relatively short time.
  • the artificial turf flooring according to the invention is typically produced in the form of webs which are designed side by side and be joined by blunt abutment or by burdock.
  • the artificial turf flooring according to the invention can also be provided in the form of tiles (also referred to as panels). These are particularly easy to transport and lay out because they are relatively handy because of their size. Such tiles are preferably fastened to the substrate with the aid of a Velcro system, for example with a hook / loop closure, such as the Klettostar® line from Gott Kunststoff Binder GmbH & Co. KG (Holzgerlingen, Germany).
  • tile part on the underside of the tiles one part of the Velcro system (hereinafter referred to as "tile part") and on the bottom of the other part of the Velcro system (hereinafter referred to as “bottom part”) attached, preferably in the tiles in each case in the four Corners and on the ground so that each bottom part of the Velcro system can each interact with four tile parts of four different tiles.
  • a piece of Klettostar® adhesive about 10 x 10 cm in size can be placed on the tiles in each corner, and a piece of Klettostar® Velcro about 21 x 21 cm in size on the surface so that the four corners of the tile in the center are in the laid out condition of the Klettostar® Velcro Piece.
  • the synthetic turf covering according to the invention has a high load-bearing capacity, so that it is particularly well suited for applications with a high load, e.g. for rugby or football.
  • the present invention also relates to an artificial turf system comprising the artificial turf flooring according to the invention.
  • This artificial turf system can be designed directly on a solid surface and does not require any additional damping layer or backfilling (eg plastic granulate or sand).
  • the artificial turf system thus consists essentially of the artificial turf flooring according to the invention.
  • This artificial turf system preferably contains the artificial turf covering according to the invention in the form of webs or tiles. This makes it particularly easy to transport to the place of use, interpret and later remove it.
  • a web has a width of about 2 meters and, if weight permits, a length corresponding to the shorter side of the surface to be turfed.
  • Tiles are basically possible in any size, with sizes of 0.25 to 4 m 2 are preferred.
  • the artificial turf system according to the invention may additionally also comprise means for connecting the artificial turf covering, for example a Velcro system, or provided in the form of a known "puzzle system".
  • the artificial turf system according to the invention additionally comprises a hook-and-loop fastener system, in particular corresponding elements from the Klettostar® line of Gottling Binder GmbH & Co. KG (Holzgerlingen, Germany).
  • the artificial turf system according to the invention can have, for example, a single tile of the artificial turf covering according to the invention, on the underside of which an approximately 10 x 10 cm piece of Klettostar® adhesive is attached as a tile part, and additionally two pieces about 21 x 21 cm in size Klettostar® Velcro made by Users should be mounted on the ground as the bottom part.
  • Klettostar® Haft and Klettostar® Flausch can of course also be exchanged or be available in other dimensions.
  • An artificial turf system with a Velcro system offers increased flexibility in laying, as the size of the artificial turf to be laid can be individually adapted to the needs of the user. In addition, it allows a particularly quick and easy installation and can also be easily removed.
  • the particularly stable tiles of the artificial turf flooring according to the invention are particularly well suited for use with a Velcro system.
  • FIG. 1 shows a cross section through a first artificial turf 10 according EP 1 696 077 , This has a damping layer 12 and a wear layer 14 arranged above it.
  • the damping layer 12 comprises blocks 16 of a shock absorbing material, between which run channels 18, which serve for the discharge of seepage water.
  • the wear layer 14 has a carrier 20, a support layer 22 and a turf-like pile 26 formed from pile yarns 24.
  • support layer 22 is formed by support threads 28. Both the pile threads 24 and the support threads 28 are connected to the carrier 20 by tufts.
  • artificial turf 10 according to EP 1 696 077 serves the support layer 22 to elevate deflected pile threads 24 again.
  • FIG. 2 shows a cross section through a second artificial turf 30 according to EP 1 696 077 , This likewise has a damping layer 32 and a wear layer 34 arranged above it.
  • the damping layer 32 comprises blocks 36 of a shock absorbing material, between which run channels 38, which serve to dissipate seepage water.
  • the wear layer 34 likewise has a carrier 40, a support layer 42 and a turf-like pile 46 formed from pile threads 44.
  • support layer 42 is formed by a continuous sheet 48, for example, a nonwoven.
  • the pile threads 44 are connected to the carrier 40 by tufts and penetrate the continuous sheet 48, which rests on the carrier 40.
  • the artificial turf 30 according to EP 1 696 077 serves the support layer 42 to erect deflected pile threads 44 again.
  • FIG. 3 shows a cross section through an artificial turf 50 according to EP 2 333 156 , This has a lower part 52 and a utility part 54 arranged above it.
  • the lower part 52 comprises an elastic layer 56 and at least one additional carrier layer 58, which are to guarantee sufficient shock absorption and reliable drainage of seepage water.
  • the useful part 54 has a carrier 60 and a lawn-like pile 62, the latter being formed by first, longer pile threads 64 and second, shorter pile threads 66.
  • the pile threads 64, 66 are again by Tuften connected to the carrier 60.
  • a plastic granule layer 68 is arranged. This causes additional shock absorption.
  • FIG. 4 shows a cross section through an inventive Kunststoffrasenbelag 70 according to a first preferred embodiment.
  • This artificial turf covering 70 is arranged directly - ie without an additional damping layer - on a substrate 72.
  • the artificial turf covering 70 comprises a flat carrier 74 with a top 76 and a bottom 78, a turf 80 and a support layer 82.
  • the flat carrier 74 is made of polypropylene, polyester and glass fibers.
  • the underside 78 of the carrier 74 rests loosely on the substrate 72.
  • the turf 80 is formed of first pile yarns 84 and second pile yarns 86 which are joined to the support 74, preferably by tufting.
  • the first pile threads 84 are measured longer than the second pile threads 86 from the top 76 of the backing 74.
  • the first pile threads 84 have a length of 34 mm and the second pile threads 86 have a length of 29 mm, respectively from the top 76 of the wearer 74 from measured.
  • the first pile threads 84 may be stiffer than the second pile threads 86.
  • the pile threads 84, 86 are preferably made of polyamide, polyethylene, polyurethane and / or polyethersulfone, wherein the use of plastic fibers, as described in FIG. 6 are shown, is particularly preferred.
  • the support layer 82 is disposed on the top 76 of the carrier 74 and is penetrated by the pile threads 84, 86 of the turf 80. It has a height of at least 2 cm and a density of at least 0.095 g / cm 3 .
  • the support layer 82 consists exclusively of support filaments 88.
  • the support filaments 88 are preferably made of polyamide and are preferably crimped (as in FIG. 4 shown).
  • FIG. 5 shows a cross section through an inventive Kunststoffrasenbelag 70 according to a second preferred embodiment.
  • This second preferred embodiment differs from that in FIG. 4 only in the embodiment of the support layer 82. For this reason, only the support layer 82 will be described in more detail below; for the rest in FIG. 5 shown items will be on the designs too FIG. 4 directed.
  • the support layer 82 comprises a felt support 90 arranged on the upper side 76 of the flat support 74.
  • the felt support 90 is penetrated by the pile threads 84, 86 and the support filaments 88.
  • artificial turf coverings 70 are both unfilled.
  • FIG. 6 shows a cross section through a plastic fiber according to EP 2 395 135 which in the inventive Artificial turf covering 70 is preferably used for the pile threads 84, 86 of the turf 80.
  • the plastic fiber 100 essentially has a rhombic cross section with rounded corners.
  • the rhombus has a cross-sectional major axis A and a cross-sectional minor axis B extending at right angles thereto, which are both axes of symmetry of the plastic fiber 100.
  • the extent of the plastic fiber 100 in the direction of the cross-sectional secondary axis B is less than that in the direction of the cross-sectional main axis A.
  • the plastic fiber 100 includes a first component 102 and a second component 104 embedded in the first component 102, wherein the second component 104, which may be e.g. made of polyamide, has a higher resilience than the first component 102, which is e.g. made of polyethylene.
  • FIG. 7 shows a section of an inventive artificial turf system 108 with two tiles 110 from the inventive artificial turf 70 according to FIG. 4 ,
  • This has a flat carrier 74 and a turf 80 with a support layer 82.
  • a tile part 112 of a Velcro system is arranged in each case in the region of the corners. This can be, for example, an approximately 10 x 10 cm piece of Klettostar® adhesive.
  • a bottom part 114 of the Velcro system is arranged on the substrate 71.
  • This can be, for example, a piece of Klettostar® Velcro that is about 21 x 21 cm in size.
  • the individual tiles 110 of the artificial turf system 108 according to the invention are thus laid out on the substrate 72, that each four tile parts 112 engage with a bottom part 114 of the Velcro system. In this case, preferably each meet a corner of four adjacent tiles 110 in the middle of the bottom part 114th
  • FIG. 8 shows an inventive artificial turf system 108 with 12 juxtaposed on a substrate tiles 110.
  • the tiles 110 are connected to the ground by means of a Velcro system consisting of several tile parts 112 and a plurality of bottom parts 114.
  • a Velcro system consisting of several tile parts 112 and a plurality of bottom parts 114.
  • an inner region 116 of the artificial turf system 108 is in each case a tile portion 112 of four different tiles 110 on a respective bottom part 114, so a total of four tile parts 112 per bottom part 114.
  • the bottom parts 114 relative to the tiles 110 to Inner region 116 is shifted toward, so that in each case a tile portion 112 of two tiles 110 with the single bottom part 114, so a total of two tile parts 112 per bottom part 114, cooperate and the bottom parts 114 do not protrude beyond the tiles 110.

Claims (13)

  1. Revêtement de pelouse artificielle (70) comprenant
    un support plan (74) avec une face supérieure (76) et une face inférieure (78),
    un velours de gazon (80), qui est formé de fils de velours (84, 86) connectés au support (74), et
    une couche de support (82) disposée sur la face supérieure (76) du support (74), transpercée par les fils de velours (84, 86) du velours de gazon (80), laquelle est constituée exclusivement de filaments de support (88),
    caractérisé en ce que la couche de support (82) présente une hauteur d'au moins 2 cm et une densité d'au moins 0.095 g/cm3 et en ce que la couche de support (82) est constituée de polyamide ou de polyuréthane.
  2. Revêtement de pelouse artificielle (70) selon la revendication 1, caractérisé en ce que la couche de support (82) comprend en plus un revêtement de feutre (90) disposé sur la face supérieure (76) du support plan (74).
  3. Revêtement de pelouse artificielle (70) selon l'une des revendications 1 ou 2, caractérisé en ce que les filaments de support (88) de la couche de support (82) sont bouclés ou texturés.
  4. Revêtement de pelouse artificielle (70) selon l'une des revendications 1 à 3, caractérisé en ce que les fils de velours (84, 86) du velours de gazon (80) sont constitués d'un premier composant (102) en polyéthylène et d'un deuxième composant (104) en polyamide incorporé dans le premier composant (102).
  5. Revêtement de pelouse artificielle (70) selon l'une des revendications 1 à 4, caractérisé en ce que les fils de velours (84, 86) du velours de gazon présentent une longueur de 2.5 à 4.0 cm mesurée à partir de la face supérieure (76) du support (74).
  6. Revêtement de pelouse artificielle (70) selon l'une des revendications 1 à 5, caractérisé en ce qu'une première partie des fils de velours (84) du velours de gazon (80) sont plus longs qu'une deuxième partie des fils de velours (86) du velours de gazon (80) mesuré depuis la face supérieure (76) du support (74), en particulier de 5 à 10 mm plus long.
  7. Revêtement de pelouse artificielle (70) selon la revendication 6, caractérisé en ce que la première partie des fils de velours (84) du velours de gazon (80) sont plus rigides que la deuxième partie des fils de velours (86) du velours de gazon (80).
  8. Revêtement de pelouse artificielle (70) selon l'une des revendications 1 à 7, caractérisé en ce que le velours de gazon (80) est produit au moyen d'un procédé de touffetage.
  9. Revêtement de pelouse artificielle (70) selon l'une des revendications 1 à 8, caractérisé en ce qu'il est sans remplissage.
  10. Utilisation du revêtement de pelouse artificielle (70) selon l'une des revendications 1 à 9 pour un terrain de sport ou un terrain de jeux, en particulier pour un terrain de football, le revêtement de pelouse artificielle (70) étant disposé sur une surface dure (72).
  11. Utilisation selon la revendication 10, caractérisée en ce qu'aucune couche d'amortissement n'est disposée entre le revêtement de pelouse artificielle (70) et la surface (72).
  12. Utilisation selon la revendication 10 ou 11, caractérisée en ce que le revêtement de pelouse artificielle se présente sous forme de panneaux (110) et est fixé à la surface (72) au moyen d'un système d'accrochage, en particulier au moyen d'un système d'accrochage crochet/boucle.
  13. Système pour pelouse artificielle (108), comprenant le revêtement de pelouse artificielle (70) selon l'une des revendications 1 à 9 et un moyen pour la fixation du revêtement de pelouse artificielle (70) à une surface (72), en particulier un système d'accrochage.
EP12003828.6A 2012-05-15 2012-05-15 Gazon artificiel Active EP2664711B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12003828.6A EP2664711B1 (fr) 2012-05-15 2012-05-15 Gazon artificiel
ES12003828.6T ES2582466T3 (es) 2012-05-15 2012-05-15 Revestimiento de césped artificial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12003828.6A EP2664711B1 (fr) 2012-05-15 2012-05-15 Gazon artificiel

Publications (2)

Publication Number Publication Date
EP2664711A1 EP2664711A1 (fr) 2013-11-20
EP2664711B1 true EP2664711B1 (fr) 2016-04-13

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EP12003828.6A Active EP2664711B1 (fr) 2012-05-15 2012-05-15 Gazon artificiel

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EP (1) EP2664711B1 (fr)
ES (1) ES2582466T3 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2019108687A1 (fr) * 2017-11-28 2019-06-06 Watershed Geosynthetics Llc Revêtement de sol de régulation de débit d'eau
WO2019108684A1 (fr) * 2017-11-28 2019-06-06 Watershed Geosynthetics Llc Couverture de sol à régulation d'écoulement d'eau stabilisée

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US20190145057A1 (en) * 2016-06-10 2019-05-16 Beaulieu International Group Nv Artificial turf
WO2018058259A1 (fr) * 2016-09-30 2018-04-05 Lendenmann Charles Tapis synthétique imitant le gazon pour surfaces de sport d'extérieur, procédé de fabrication et utilisation de celui-ci
BE1024290B1 (nl) * 2016-11-09 2018-01-16 Sports And Leisure Group Nv Kunstgrasveld met waterhoudende basislaag

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Publication number Priority date Publication date Assignee Title
WO2019108687A1 (fr) * 2017-11-28 2019-06-06 Watershed Geosynthetics Llc Revêtement de sol de régulation de débit d'eau
WO2019108684A1 (fr) * 2017-11-28 2019-06-06 Watershed Geosynthetics Llc Couverture de sol à régulation d'écoulement d'eau stabilisée

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