EP2084329B1 - Artificial lawn with cushioned layer - Google Patents

Artificial lawn with cushioned layer Download PDF

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Publication number
EP2084329B1
EP2084329B1 EP07821579.5A EP07821579A EP2084329B1 EP 2084329 B1 EP2084329 B1 EP 2084329B1 EP 07821579 A EP07821579 A EP 07821579A EP 2084329 B1 EP2084329 B1 EP 2084329B1
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EP
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Prior art keywords
layer
slots
foam
web
artificial lawn
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EP07821579.5A
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German (de)
French (fr)
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EP2084329A1 (en
EP2084329B2 (en
Inventor
Michael Frank
Wilhelm Ginster
Rudolf Kautz
Frank Pilz
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Trocellen GmbH
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Trocellen GmbH
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Priority to PL07821579T priority Critical patent/PL2084329T5/en
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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
    • E01C13/02—Foundations, e.g. with drainage or heating arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
    • D06N7/0089—Underlays
    • 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 invention relates to an artificial turf, with a playable top layer and a cushion layer, wherein the cushion layer comprises at least one foam layer.
  • the invention also relates to the use of such a cushion layer for an artificial turf.
  • Artificial turf on z. B. Football fields are available in different versions with regard to the grass yarn, the tufting, the pile heights and densities.
  • the artificial turf can be filled with quartz sand, rubber granules, EPDM granules, combined layers or other fillings.
  • the filling heights depend on the density of the lawn yarns and Pohl Morrisn.
  • an elastic layer is installed under the synthetic turf, which may consist of cross-linked PE foam, PU composite foam, a rubber granule mat, locally applied layers of a mixture of recycled rubber-sand resin or EPDM sand resin.
  • a sports floor having an elastic layer is known in which a sheet of cross-linked polyethylene foam with thermally formed nubs is installed under the layers of the sports floor.
  • Sheets of foams such as PE, PP, PS or PVC in the usual widths of 1.5 to 2 m and thicknesses of 4 to 20 mm are rolled in the first step of laying in the longitudinal direction over the field width.
  • the web edges are sewn together, glued or welded.
  • After two to three laid sheets of elastic layer is used for weighting with the Laying of artificial turf started, which are also aligned over the field width.
  • WO 98/56993 describes an artificial turf according to the preamble of claim 1. Although the pad layer has slots, but these serve to accommodate golf tees, so that the problem of buckling is not resolved.
  • Bumps can also occur under already laid lawns by expansions of the foam sheets.
  • Object of the present invention is therefore to provide a cushion layer under an artificial turf, which avoids these problems and at the same time a wave formation / curvature in sunlight or already laid lawns by expansions of the foam webs.
  • the cushioning layer has slots which completely penetrate the cushioning layer. These slits in the cushion layer cause the extensibility in the longitudinal and transverse directions of the cushion layer webs is significantly increased, so that the webs are stretched during laying even at relatively low tensile stress to the extent that they even with considerable warming, z. B. by sunlight, no more wave formation.
  • the type and length of the slots is basically unproblematic, but slot patterns are preferred in which the individual slots extend in two different directions, these two directions are at an angle of 30 to 90 °, preferably at an angle of 90 ° to each other.
  • the slots may also be curved or otherwise non-linear, and it is preferable if the distribution of the slots permits stretching in both the longitudinal and transverse directions.
  • the slots - as preferred - extend substantially in two mutually perpendicular directions and these directions are directed at an angle of approximately 45 ° to the longitudinal extent of the web, a particularly advantageous effect achieved: when elongated in longitudinal direction by applying a corresponding tensile force during installation, the webs are automatically stretched simultaneously in the transverse direction, so that a particularly simple installation of adjacent webs can be done.
  • an elongation of the cushion layer in the longitudinal direction of about 0.5 to 10%, in particular 1.5 to 6%, caused by the laying of the cushion layer during installation with appropriate tensile force and optionally fixed at the end.
  • the elongation can be selected higher, in particular up to 300%.
  • the cushion layer according to the invention is preferably made of a crosslinked polyolefin foam having a density of 25 to 180 kg / m 3 , in particular from 27 to 100 kg / m 3 .
  • the thickness is preferably 5 to 20 mm, in particular 8 to 18 mm.
  • a multilayered layer in particular composed of different densities.
  • a top layer having a density of 120 kg / m 3 and a bottom layer having a density of 30 kg / m 3 could be combined, wherein the individual layers are preferably joined together by flame laminating.
  • the foam layer of the cushion layer is provided after slitting with a particular stretchable nonwoven or woven or knitted fabric, which is laminated to the already stretched foam layer.
  • the stretching of the laminate can relax more or less strongly and thereby the unslotted top or bottom layers are more or less strongly compressed when relaxing the foam layer.
  • substantially greater strains of the foam layer can also be realized, in particular in the range from 50 to 300%.
  • a nonwoven cover layer throws wrinkles when relaxing the foam layer, which can either directed upwards or penetrate into the slots.
  • Particularly preferred is an embodiment comprising a foam layer with exclusively straight, mutually parallel slots extending, wherein the foam layer is laminated on one side with a non-woven and is stretched when laminating the nonwoven by 100 to 200%.
  • the individual slots are preferably the same length and preferably have a length of 30 to 100 mm, in particular 40 to 60 mm. In embodiments with slots extending substantially in two mutually perpendicular directions, the individual slots are preferably arranged at an angle of 45 ° to the edges of the web.
  • the slitting of the webs is preferably carried out by means of a corresponding punching tool, for example by means of rolls provided correspondingly with knives and possibly provided with slits Counter roll, but can also be done for example by Hubstanzen or water jet cutting.
  • the laying can be done for example in the following way: With z. As a Abrollwagen the slotted web is rolled out, passing two pairs of rollers installed on the unwinding. The rear pair of rollers is synchronously coupled with a drive wheel of the roll-off, the front pair of rollers is connected by a chain drive with the rear roller pair.
  • a smaller sprocket provides for a translation at a lower speed of the front pair of rollers compared to the rear pair of rollers.
  • a uniform web tension is applied continuously, which leads to the drawing of the continuous web.
  • the stretched web is fastened to the ground as at the beginning and kept under tension. In the course of laying the ends are glued to the surface while maintaining the web tension.
  • the web joints of adjacent webs are welded together according to a preferred embodiment of the invention in the longitudinal direction with hot air or hot wedge. Due to the stretching of the web, a fishbone-like structure of the expanded metal mesh arises in the edge region. Thus, there is no longer closed loop edge.
  • the outwardly projecting foam elements abut elastically against each other in the edge region of two adjacent webs at irregular intervals. As a result, on the one hand a resilient behavior of the elements is achieved with mutually aligned pressure, which accommodates the welding, on the other hand are obtained by the irregular welding positions in the connecting regions of the webs elastically deformable areas.
  • slots Another advantage of the slots is that water can run to the bottom of the web and can be discharged directly into the ground or through introduced on the web rear gutters to the edge of the field. This eliminates an otherwise usual additional operation in which holes are punched in the foam sheet.
  • a foam sheet of chemically crosslinked, largely closed-cell polyethylene foam having a density of 90 kg / m 3 , make Trocellen C 09008 N is used.
  • the starting material in roll form has a width of 150 cm and a thickness of 8 mm.
  • This web was provided with slots 7, 7 ', 8, 8' by means of a pair of rollers whose first roller had corresponding blades and whose second roller had matching slots for this purpose.
  • the mutually parallel at a distance of 3.5 cm extending slots 7, 7 'and 8, 8' each have a length b of 5 cm and extend at an angle of 45 ° to the longitudinal extent of the web 1.
  • the perpendicular thereto extending slots 8, 8 ' also have a length b of 5 cm and are arranged alternately to the slots 7, 7', wherein between the end of the slots 8, 8 'in each case a free space c of 1 cm to the transverse slot 7, 7' remains.
  • one end of the slotted sheet is first fixed to the ground by means of a nail bar.
  • the slotted web is rotatably mounted in the form of a roller 3 on the laying device 9.
  • the laying device 9 is then pulled in laying direction 5, wherein the cushion layer web 1 is automatically unrolled and stretched in the draw unit 6 by 5%.
  • the propulsion speed in the laying direction 5 is also selected so that the web is stretched by 5% in the longitudinal direction.
  • the track is cut to length and also fixed to the ground.
  • the slits 7, 7 ', 8, 8' were each opened slightly like a lens, so that the web was stretched in the transverse direction with the drawing in the longitudinal direction by about 5% at the same time.
  • first track is successively a second, third, etc. track laid under stretching by 5% in the longitudinal direction.
  • the adjoining each with its longitudinal edge 2 adjacent webs are then partially welded together in a conventional manner by means of hot air, so that a homogeneous evenly stretched coating is formed. If the surface of this covering, for example, heated by sunlight, the slots 7, 7 ', 8, 8' according to the temperature-induced strain of the web again more or less together, without the web would be curled or curved. At an elongation of 5% in the longitudinal direction during laying, temperature differences of about 80 k and more can be compensated.
  • the top layer of artificial turf is laid in layers, thus completing the sports floor.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Road Paving Structures (AREA)
  • Laminated Bodies (AREA)

Description

Technisches GebietTechnical area

Die Erfindung betrifft einen Kunstrasen, mit einer bespielbaren Oberschicht und einer Polsterschicht, wobei die Polsterschicht wenigstens eine Schaumstoffschicht umfasst. Die Erfindung betrifft auch die Verwendung einer solchen Polsterschicht für einen Kunstrasen.The invention relates to an artificial turf, with a playable top layer and a cushion layer, wherein the cushion layer comprises at least one foam layer. The invention also relates to the use of such a cushion layer for an artificial turf.

Kunstrasen auf z. B. Fußballfeldern gibt es in unterschiedlichen Ausführungen hinsichtlich des Rasengarns, der Tuftingart, den Polhöhen und Dichten. Der Kunstrasen kann gefüllt sein mit Quarzsand, Gummigranulat, EPDM-Granulat, hieraus kombinierten Schichten oder anderen Schüttungen. Die Füllhöhen richten sich nach der Dichte der Rasengarne und Pohlhöhen.Artificial turf on z. B. Football fields are available in different versions with regard to the grass yarn, the tufting, the pile heights and densities. The artificial turf can be filled with quartz sand, rubber granules, EPDM granules, combined layers or other fillings. The filling heights depend on the density of the lawn yarns and Pohlhöhen.

Üblicherweise wird unter dem Kunstrasen eine Elastikschicht installiert, die bestehen kann aus vernetztem PE-Schaum, PU-Verbundschaum, einer Gummi-Granulatmatte, vor Ort aufgebrachten Schichten eines Gemisches aus rezykliertem Gummi-Sand-Harz oder EPDM-Sand-Harz.Usually, an elastic layer is installed under the synthetic turf, which may consist of cross-linked PE foam, PU composite foam, a rubber granule mat, locally applied layers of a mixture of recycled rubber-sand resin or EPDM sand resin.

Stand der TechnikState of the art

Aus der WO 2006/007862 A1 ist eine Ausführungsform eines Sportbodens mit einer Elastikschicht bekannt, bei der unter den Schichten des Sportbodens eine Bahn aus vernetztem Polyethylenschaum mit thermisch geformten Noppen installiert wird.From the WO 2006/007862 A1 For example, an embodiment of a sports floor having an elastic layer is known in which a sheet of cross-linked polyethylene foam with thermally formed nubs is installed under the layers of the sports floor.

Bahnen aus Schaumstoffen wie PE, PP, PS oder PVC in üblichen Breiten von 1,5 bis 2 m und Dicken von 4 bis 20 mm werden im ersten Schritt der Verlegung in Längsrichtung über die Spielfeldbreite ausgerollt. Die Bahnenränder werden miteinander vernäht, verklebt oder verschweißt. Nach zwei bis drei ausgelegten Bahnen der Elastikschicht wird zur Beschwerung mit der Verlegung der Kunstrasenbahnen begonnen, die ebenfalls über die Spielfeldbreite ausgerichtet sind.Sheets of foams such as PE, PP, PS or PVC in the usual widths of 1.5 to 2 m and thicknesses of 4 to 20 mm are rolled in the first step of laying in the longitudinal direction over the field width. The web edges are sewn together, glued or welded. After two to three laid sheets of elastic layer is used for weighting with the Laying of artificial turf started, which are also aligned over the field width.

Problematisch kann die Verlegung der Elastikschicht bei Temperaturwechsel sein. Wird eine Bahn bei relativ niedrigen Tagestemperaturen verlegt, liegt sie zunächst glatt und dicht auf der Tragschicht aus z. B. Asphalt, Beton oder Erdplanum auf. Werden in diesem Zustand die Kunstrasenbahnen über der Elastikschicht verlegt, bleiben die Bahnen auch weiterhin glatt liegen.The laying of the elastic layer during temperature changes can be problematic. If a web laid at relatively low daytime temperatures, it is initially smooth and tight on the support layer of z. As asphalt, concrete or Erdplanum on. If the artificial turf runs over the elastic layer are laid in this state, the tracks will continue to lie smoothly.

Treten Temperaturveränderungen z. B. nach Auflockerung der Bewölkung durch Sonneneinstrahlung auf, kann es durch den relativ hohen Wärmeausdehnungskoeffizienten von Schaumstoffen zu Ausdehnungen der Bahnen in Länge und Breite kommen, was sich in Wellenbildung und Bahnenverwerfungen auswirkt. Wird in diesem Zustand die Verlegung von Kunstrasen weitergeführt, kann es zu bleibenden Unebenheiten in der Fläche kommen. Ein weiteres Problem stellt sich durch die Windanfälligkeit gewellter und nicht plan liegender Bahnen ein.Occur temperature changes z. B. after loosening of the clouds by sunlight, it may be due to the relatively high thermal expansion coefficients of foams to expansions of the webs in length and width, resulting in wave formation and web distortions. If the laying of artificial turf is continued in this condition, permanent unevenness in the surface may occur. Another problem arises due to the wind susceptibility of undulating and non-flat lying webs.

WO 98/56993 beschreibt einen Kunstrasen gemäß dem Oberbegriff des Anspruchs 1. Die Polsterschicht weist zwar Schlitze auf, diese dienen jedoch zur Aufnahme von Golf-Tees, so dass das Problem der Wölbung dadurch nicht behoben wird. WO 98/56993 describes an artificial turf according to the preamble of claim 1. Although the pad layer has slots, but these serve to accommodate golf tees, so that the problem of buckling is not resolved.

Aus der EP 0 292 865 B1 ist zur Behebung dieses Problems eine mehrschichtige Polsterschicht bekannt, bei der die Polsterschicht an der oberen Seite mit einer Metallfolie kaschiert wurde, die das Sonnenlicht reflektiert und dadurch die Temperaturerhöhung weitgehend vermeidet. Diese Polsterschicht unter Kunstrasen hat sich bezüglich der Vermeidung der Wellenbildung bei Sonnenbestrahlung bewährt, jedoch führt die Rückstrahlung des Sonnenlichtes beim Verlegen zu Akzeptanzproblemen, da diese Reflexionen beim Verlegen außerordentlich störend sein können.From the EP 0 292 865 B1 In order to overcome this problem, a multilayer cushioning layer is known in which the cushioning layer has been laminated on the upper side with a metal foil which reflects the sunlight and thereby largely avoids the temperature increase. This padding under artificial turf has proven itself with respect to avoiding the formation of waves when exposed to sunlight, however, the reflection of sunlight during installation leads to acceptance problems, since these reflections can be extremely disturbing when laying.

Unebenheiten können auch noch unter bereits verlegten Rasenflächen durch Ausdehnungen der Schaumstoffbahnen entstehen.Bumps can also occur under already laid lawns by expansions of the foam sheets.

Letzteres Problem wird bei Kunstrasenfüllungen durch das Schüttgewicht von Sand oder Granulat abgestellt.The latter problem is turned off in artificial turf fillings by the bulk density of sand or granules.

Bei nicht gefüllten Kunstrasen mit deutlich geringerem Eigengewicht bleibt die Problematik erhalten.For unfilled artificial turf with significantly lower dead weight, the problem remains.

Aufgabetask

Aufgabe der vorliegenden Erfindung ist es daher, eine Polsterschicht unter einem Kunstrasen zur Verfügung zu stellen, die diese Probleme und zugleich eine Wellenbildung/Wölbung bei Sonneneinstrahlung oder bei bereits verlegten Rasenflächen durch Ausdehnungen der Schaumstoffbahnen vermeidet.Object of the present invention is therefore to provide a cushion layer under an artificial turf, which avoids these problems and at the same time a wave formation / curvature in sunlight or already laid lawns by expansions of the foam webs.

Darstellung der ErfindungPresentation of the invention

Erfindungsgemäß wird vorgeschlagen, dass die Polsterschicht Schlitze aufweist, die die Polsterschicht vollständig durchdringen. Diese Schlitze in der Polsterschicht bewirken, dass die Dehnbarkeit in Längs- und Querrichtung der Polsterschicht-Bahnen erheblich erhöht wird, so dass die Bahnen beim Verlegen schon bei relativ geringer Zugbeanspruchung soweit gedehnt werden, dass sie auch bei erheblicher Erwärmung, z. B. durch Sonneneinstrahlung, keine Wellenbildung mehr aufweisen.According to the invention, it is proposed that the cushioning layer has slots which completely penetrate the cushioning layer. These slits in the cushion layer cause the extensibility in the longitudinal and transverse directions of the cushion layer webs is significantly increased, so that the webs are stretched during laying even at relatively low tensile stress to the extent that they even with considerable warming, z. B. by sunlight, no more wave formation.

Die Art und Länge der Schlitze ist grundsätzlich unproblematisch, jedoch werden Schlitzmuster bevorzugt, bei denen die einzelnen Schlitze in zwei verschiedenen Richtungen verlaufen, wobei diese beiden Richtungen im Winkel von 30 bis 90°, bevorzugt im Winkel von 90°, zueinander stehen. Alternativ können die Schlitze auch gekrümmt oder auf andere Weise ungradlinig verlaufen, wobei es bevorzugt ist, wenn durch die Verteilung der Schlitze eine Dehnung sowohl in Längs- als auch in Querrichtung möglich ist.The type and length of the slots is basically unproblematic, but slot patterns are preferred in which the individual slots extend in two different directions, these two directions are at an angle of 30 to 90 °, preferably at an angle of 90 ° to each other. Alternatively, the slots may also be curved or otherwise non-linear, and it is preferable if the distribution of the slots permits stretching in both the longitudinal and transverse directions.

Soweit die Schlitze - wie bevorzugt - im Wesentlichen in zwei zueinander senkrecht stehenden Richtungen verlaufen und diese Richtungen im Winkel von ca. 45° zur Längserstreckung der Bahn gerichtet sind, wird ein besonders vorteilhafter Effekt erzielt: bei Dehnung in Längserstreckung durch Aufbringen einer entsprechenden Zugkraft bei der Verlegung werden die Bahnen gleichzeitig automatisch in Querrichtung verstreckt, so dass eine besonders einfache Verlegung von nebeneinander angeordneten Bahnen erfolgen kann.As far as the slots - as preferred - extend substantially in two mutually perpendicular directions and these directions are directed at an angle of approximately 45 ° to the longitudinal extent of the web, a particularly advantageous effect achieved: when elongated in longitudinal direction by applying a corresponding tensile force during installation, the webs are automatically stretched simultaneously in the transverse direction, so that a particularly simple installation of adjacent webs can be done.

Besonders bevorzugt wird beim Verlegen eine Dehnung der Polsterschicht in Längsrichtung von ca. 0,5 bis 10 %, insbesondere 1,5 bis 6 %, bewirkt, indem die Polsterschicht bei der Verlegung mit entsprechender Zugkraft verlegt und ggf. am Ende fixiert wird. Soweit die Polsterschicht Schlitze lediglich in einer Richtung aufweist, kann die Dehnung auch höher gewählt werden, insbesondere bis zu 300 %.Particularly preferably, an elongation of the cushion layer in the longitudinal direction of about 0.5 to 10%, in particular 1.5 to 6%, caused by the laying of the cushion layer during installation with appropriate tensile force and optionally fixed at the end. As far as the padding layer has slots in only one direction, the elongation can be selected higher, in particular up to 300%.

Nach dem Verlegen von zwei oder mehr nebeneinander verlaufenden Bahnen werden diese nach einer bevorzugten Ausführungsform der Erfindung untereinander durch Verschweißen der aneinanderstoßenden Längskanten miteinander verbunden. Es ist dabei unkritisch, wenn die Schlitze der einzelnen Bahnen bis in diesen Randbereich verlaufen. Es ist im allgemeinen ausreichend, wenn zwei mit ihren Seitenrändern aneinandergrenzende Bahnen nur punktweise miteinander verschweißt werden. Alternativ zur Verschweißung kann auch eine Verklebung oder Vernähung der aneinanderstoßenden Bahnen vorgenommen werden.After laying two or more side by side extending webs these are connected to each other according to a preferred embodiment of the invention by welding the abutting longitudinal edges. It is not critical if the slots of the individual webs extend into this edge region. It is generally sufficient if two webs adjacent to one another with their side edges are welded together only pointwise. As an alternative to welding, bonding or suturing of the abutting webs can also be carried out.

Die erfindungsgemäße Polsterschicht wird bevorzugt aus einem vernetzten Polyolefinschaumstoff einer Dichte von 25 bis 180 kg/m3, insbesondere von 27 bis 100 kg/m3 hergestellt. Die Dicke beträgt bevorzugt 5 bis 20 mm, insbesondere 8 bis 18 mm.The cushion layer according to the invention is preferably made of a crosslinked polyolefin foam having a density of 25 to 180 kg / m 3 , in particular from 27 to 100 kg / m 3 . The thickness is preferably 5 to 20 mm, in particular 8 to 18 mm.

Erfindungsgemäß kann anstelle einer einschichtigen, homogenen Schaumstoffbahn auch eine mehrschichtige, insbesondere aus unterschiedlichen Dichten zusammengesetzte Schicht verwendet werden. Beispielsweise könnte eine Deckschicht einer Dichte von 120 kg/m3 und eine Unterschicht mit einer Dichte von 30 kg/m3 kombiniert werden, wobei die einzelnen Schichten bevorzugt durch Flammkaschieren miteinander verbunden werden.According to the invention, instead of a single-layer, homogeneous foam web, it is also possible to use a multilayered layer, in particular composed of different densities. For example, a top layer having a density of 120 kg / m 3 and a bottom layer having a density of 30 kg / m 3 could be combined, wherein the individual layers are preferably joined together by flame laminating.

Es können mehrere gleich oder unterschiedlich geschlitzte Schichten im geschlitzten und verstreckten Zustand miteinander kaschiert werden. Von besonderem Vorteil ist es, dass dabei die Verstreckung weitgehend fixiert bzw. erhalten bleibt.It can be laminated together in slit and stretched state several equal or different slotted layers. It is of particular advantage that the stretching is largely fixed or retained.

Erfindungsgemäß wird die Schaumstoffschicht der Polsterschicht nach dem Schlitzen mit einem insbesondere dehnfähigen Vlies oder Gewebe oder Gewirke versehen, wobei dieses auf die bereits gestreckte Schaumstoffschicht kaschiert wird. Je nach Anordnung und Abstand der Schlitze sowie dem Maß der Verstreckung vor dem Kaschieren kann die Dehnung des Laminats mehr oder weniger stark relaxieren und dabei die ungeschlitzten Deck- oder Unterschichten beim Entspannen der Schaumstoffschicht mehr oder weniger stark gestaucht werden. Insbesondere bei Verwendung eines Vlieses als zusätzlicher, mit der Schaumstoffschicht kaschierter Schicht können auch wesentlich größere Dehnungen der Schaumstoffschicht realisiert werden, insbesondere im Bereich von 50 bis 300 %. Es kann dabei von Vorteil sein, wenn beispielsweise eine Vlies-Deckschicht beim Entspannen der Schaumstoffschicht Falten wirft, die entweder nach oben gerichtet oder in die Schlitze eindringen können. Besonders bevorzugt wird eine Ausführungsform, umfassend eine Schaumstoffschicht mit ausschließlich geraden, versetztparallel zueinander verlaufenden Schlitzen, wobei die Schaumstoffschicht einseitig mit einem Vlies kaschiert ist und beim Kaschieren des Vlieses um 100 bis 200 % gestreckt wird.According to the invention the foam layer of the cushion layer is provided after slitting with a particular stretchable nonwoven or woven or knitted fabric, which is laminated to the already stretched foam layer. Depending on the arrangement and spacing of the slots and the degree of stretching before laminating, the stretching of the laminate can relax more or less strongly and thereby the unslotted top or bottom layers are more or less strongly compressed when relaxing the foam layer. In particular when using a nonwoven as an additional layer laminated with the foam layer, substantially greater strains of the foam layer can also be realized, in particular in the range from 50 to 300%. It may be advantageous if, for example, a nonwoven cover layer throws wrinkles when relaxing the foam layer, which can either directed upwards or penetrate into the slots. Particularly preferred is an embodiment comprising a foam layer with exclusively straight, mutually parallel slots extending, wherein the foam layer is laminated on one side with a non-woven and is stretched when laminating the nonwoven by 100 to 200%.

Die einzelnen Schlitze sind bevorzugt jeweils gleich lang und weisen bevorzugt eine Länge von 30 bis 100 mm, insbesondere 40 bis 60 mm auf. Bei Ausführungsformen mit im Wesentlichen in zwei zueinander senkrecht stehenden Richtungen verlaufen Schlitzen sind die einzelnen Schlitze bevorzugt im Winkel von jeweils 45° zu den Kanten der Bahn verlaufend angeordnet.The individual slots are preferably the same length and preferably have a length of 30 to 100 mm, in particular 40 to 60 mm. In embodiments with slots extending substantially in two mutually perpendicular directions, the individual slots are preferably arranged at an angle of 45 ° to the edges of the web.

Das Schlitzen der Bahnen erfolgt bevorzugt durch ein entsprechendes Stanzwerkzeug, beispielsweise durch entsprechend mit Messern versehene Walzen und einer ggf. mit Schlitzen versehenen Gegenwalze, kann aber auch beispielsweise durch Hubstanzen oder Wasserstrahlschneiden erfolgen.The slitting of the webs is preferably carried out by means of a corresponding punching tool, for example by means of rolls provided correspondingly with knives and possibly provided with slits Counter roll, but can also be done for example by Hubstanzen or water jet cutting.

Das Verlegen kann beispielsweise in folgender Weise erfolgen: Mit z. B. einem Abrollwagen wird die geschlitzte Bahn ausgerollt, wobei sie zwei auf der Abrollvorrichtung installierte Walzenpaare passiert. Das hintere Walzenpaar ist synchron mit einem Antriebsrad des Abrollwagens gekoppelt, das vordere Walzenpaar wird mit einem Kettenantrieb mit dem hinteren Walzenpaar verbunden. Dabei sorgt ein kleinerer Zahnkranz für eine Übersetzung mit geringerer Drehzahl des vorderen Walzenpaares gegenüber dem hinteren Walzenpaar. Hierdurch wird kontinuierlich eine gleichmäßige Bahnenspannung aufgebracht, die zur Verstreckung der durchlaufenden Bahn führt. Am Ende der Auslegestrecke wird die gestreckte Bahn wie am Anfang am Boden befestigt und unter Spannung gehalten. Im weiteren Verlauf der Verlegung werden die Enden unter Erhalt der Bahnenspannung auf dem Untergrund verklebt.The laying can be done for example in the following way: With z. As a Abrollwagen the slotted web is rolled out, passing two pairs of rollers installed on the unwinding. The rear pair of rollers is synchronously coupled with a drive wheel of the roll-off, the front pair of rollers is connected by a chain drive with the rear roller pair. Here, a smaller sprocket provides for a translation at a lower speed of the front pair of rollers compared to the rear pair of rollers. As a result, a uniform web tension is applied continuously, which leads to the drawing of the continuous web. At the end of the laying stretch, the stretched web is fastened to the ground as at the beginning and kept under tension. In the course of laying the ends are glued to the surface while maintaining the web tension.

Die Bahnenstöße benachbarter Bahnen werden nach einer bevorzugten Ausführungsform der Erfindung in Längsrichtung mit Heißluft oder Heizkeil miteinander verschweißt. Durch die Verstreckung der Bahn stellt sich im Randbereich eine fischgrätartige Struktur des Streckgitters ein. Damit liegt keine geschlossene Bahnenkante mehr vor. Die nach außen ragenden Schaumstoffelemente stoßen im Kantenbereich von zwei nebeneinander liegenden Bahnen in unregelmäßigen Abständen elastisch gegeneinander. Hierdurch wird einerseits ein federndes Verhalten der Elemente mit gegeneinander ausgerichtetem Druck erreicht, was dem Verschweißen entgegenkommt, andererseits werden durch die unregelmäßigen Schweißpositionen auch in den Verbindungsbereichen der Bahnen elastisch verformbare Bereiche erhalten.The web joints of adjacent webs are welded together according to a preferred embodiment of the invention in the longitudinal direction with hot air or hot wedge. Due to the stretching of the web, a fishbone-like structure of the expanded metal mesh arises in the edge region. Thus, there is no longer closed loop edge. The outwardly projecting foam elements abut elastically against each other in the edge region of two adjacent webs at irregular intervals. As a result, on the one hand a resilient behavior of the elements is achieved with mutually aligned pressure, which accommodates the welding, on the other hand are obtained by the irregular welding positions in the connecting regions of the webs elastically deformable areas.

In Versuchen wurden nach vorstehender Beschreibung geschlitzte Bahnen an zwei Enden in einem Rahmen gestreckt und befestigt. Eine Oberfläche wurde danach mit IR-Strahlung erwärmt. Während sich in einem Parallelversuch eine geschlossene, nicht geschlitzte und verstreckte Schaumbahn gleicher Qualität unter einseitiger Temperatureinwirkung konvex zur erwärmten Seite wölbt, bleibt die geschlitzte und kalt gestreckte Bahn ohne Verzug in der Planlage. Mit zunehmender Temperatur verengen sich die Schlitze, bei Entfernung der Wärmequelle und Abkühlung öffnen sich die Schlitze wieder in die Ausgangsabmessungen zurück.In tests, as described above, slit sheets were stretched and fastened at two ends in a frame. One surface was then heated with IR radiation. While in a parallel experiment a closed, not slotted and stretched foam sheet of the same quality bulges convexly to the heated side under one-sided effect of temperature, the slotted and cold stretched web remains in the flat position without delay. As the temperature increases, the slots narrow, and as the heat source is removed and cooled, the slots reopen to their original dimensions.

Ein weiterer Vorteil der Schlitze besteht darin, dass Wasser zur Unterseite der Bahn laufen kann und direkt in den Untergrund oder über auf der Bahnenrückseite eingebrachte Ablaufrinnen zum Spielfeldrand abgeführt werden kann. Hierdurch erübrigt sich ein sonst üblicher zusätzlicher Arbeitsgang, bei dem Löcher in die Schaumbahn gestanzt werden.Another advantage of the slots is that water can run to the bottom of the web and can be discharged directly into the ground or through introduced on the web rear gutters to the edge of the field. This eliminates an otherwise usual additional operation in which holes are punched in the foam sheet.

Kurze Beschreibung der ZeichnungShort description of the drawing

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels sowie der Zeichnung näher erläutert. Die erfindungsgemäße Kaschierung auf die gestreckte Schaumstoffschicht ist jedoch nicht beschrieben. Es zeigen dabei:

  • Fig. 1 eine Aufsicht der Bahn aus Schaumstoff
  • Fig. 2 eine Verlegereinrichtung
The invention will be explained in more detail with reference to an embodiment and the drawing. However, the lamination according to the invention on the stretched foam layer is not described. It shows:
  • Fig. 1 a top view of the web of foam
  • Fig. 2 a laying device

Bester Weg zur Ausführung der ErfindungBest way to carry out the invention

Für die Herstellung einer erfindungsgemäßen Polsterschicht 1 wird eine Schaumstoffbahn aus chemisch vernetztem, weitgehend geschlossenzelligem Polyethylenschaum einer Dichte von 90 kg/m3, Fabrikat Trocellen C 09008 N, verwendet. Das Ausgangsmaterial in Rollenform hat eine Breite von 150 cm sowie eine Dicke von 8 mm. Diese Bahn wurde mittels eines Walzenpaares, dessen erste Walze entsprechende Messer und dessen zweite Walze hierzu passende Schlitze aufwies, mit Schlitzen 7, 7', 8, 8' versehen. Die zueinander im Abstand von 3,5 cm parallel verlaufenden Schlitze 7, 7' bzw. 8, 8' haben jeweils eine Länge b von 5 cm und verlaufen im Winkel von 45° zur Längserstreckung der Bahn 1. Die senkrecht hierzu verlaufenden Schlitze 8, 8' weisen ebenfalls eine Länge b von 5 cm auf und sind alternierend zu den Schlitzen 7, 7' angeordnet, wobei zwischen dem Ende der Schlitze 8, 8' jeweils ein Freiraum c von 1 cm bis zum querliegenden Schlitz 7, 7' verbleibt.For the production of a cushion layer 1 according to the invention a foam sheet of chemically crosslinked, largely closed-cell polyethylene foam having a density of 90 kg / m 3 , make Trocellen C 09008 N, is used. The starting material in roll form has a width of 150 cm and a thickness of 8 mm. This web was provided with slots 7, 7 ', 8, 8' by means of a pair of rollers whose first roller had corresponding blades and whose second roller had matching slots for this purpose. The mutually parallel at a distance of 3.5 cm extending slots 7, 7 'and 8, 8' each have a length b of 5 cm and extend at an angle of 45 ° to the longitudinal extent of the web 1. The perpendicular thereto extending slots 8, 8 'also have a length b of 5 cm and are arranged alternately to the slots 7, 7', wherein between the end of the slots 8, 8 'in each case a free space c of 1 cm to the transverse slot 7, 7' remains.

Zum Verlegen dieser Polsterschicht wird zunächst ein Ende der geschlitzten Bahn auf den Untergrund mittels eines Nagelbalkens fixiert. Die geschlitzte Bahn ist in Form einer Rolle 3 auf der Verlegevorrichtung 9 drehbar gelagert. Die Verlegevorrichtung 9 wird nun in Verlegerichtung 5 gezogen, wobei die Polsterschichtbahn 1 automatisch abgerollt und in der Streck-Einheit 6 um 5 % gestreckt wird. Die Vortriebsgeschwindigkeit in Verlegerichtung 5 ist ebenfalls so gewählt, dass die Bahn um 5 % in Längsrichtung verstreckt wird. Am Ende des Platzes wird die Bahn abgelängt und ebenfalls am Untergrund fixiert. Durch die Verstreckung bzw. Dehnung wurden die Schlitze 7, 7', 8, 8' jeweils leicht linsenförmig geöffnet, so dass die Bahn mit der Verstreckung in Längsrichtung auch gleichzeitig etwa um 5 % in Querrichtung verstreckt wurde. Neben die so verlegte erste Bahn wird sukzessive eine zweite, dritte usw. Bahn jeweils unter Verstreckung um 5 % in Längsrichtung verlegt. Die jeweils mit ihrer Längskante 2 aneinanderstoßenden benachbarten Bahnen werden anschließend in an sich bekannter Weise mittels Heißluft partiell miteinander verschweißt, so dass ein homogener gleichmäßig verstreckter Belag entsteht. Wird die Oberfläche dieses Belages beispielsweise durch Sonneneinstrahlung erwärmt, ziehen sich die Schlitze 7, 7', 8, 8' entsprechend der temperaturbedingten Dehnung der Bahn wieder mehr oder weniger zusammen, ohne dass die Bahn dadurch gewellt oder gewölbt würde. Bei einer Dehnung von 5 % in Längsrichtung bei der Verlegung können Temperaturdifferenzen von etwa 80 k und mehr kompensiert werden.For laying this cushion layer, one end of the slotted sheet is first fixed to the ground by means of a nail bar. The slotted web is rotatably mounted in the form of a roller 3 on the laying device 9. The laying device 9 is then pulled in laying direction 5, wherein the cushion layer web 1 is automatically unrolled and stretched in the draw unit 6 by 5%. The propulsion speed in the laying direction 5 is also selected so that the web is stretched by 5% in the longitudinal direction. At the end of the course, the track is cut to length and also fixed to the ground. As a result of the stretching, the slits 7, 7 ', 8, 8' were each opened slightly like a lens, so that the web was stretched in the transverse direction with the drawing in the longitudinal direction by about 5% at the same time. In addition to the thus laid first track is successively a second, third, etc. track laid under stretching by 5% in the longitudinal direction. The adjoining each with its longitudinal edge 2 adjacent webs are then partially welded together in a conventional manner by means of hot air, so that a homogeneous evenly stretched coating is formed. If the surface of this covering, for example, heated by sunlight, the slots 7, 7 ', 8, 8' according to the temperature-induced strain of the web again more or less together, without the web would be curled or curved. At an elongation of 5% in the longitudinal direction during laying, temperature differences of about 80 k and more can be compensated.

Sukzessive mit der fortschreitenden Verlegung der Polsterschicht wird bahnenweise die Oberschicht aus Kunstrasen verlegt, womit der Sportboden fertig gestellt ist.Gradually with the progressive laying of the cushion layer, the top layer of artificial turf is laid in layers, thus completing the sports floor.

LegendeLegend

11
Polsterschichtcushion layer
22
Bahnenrandweb edge
33
Rollerole
44
Räderbikes
55
Zugrichtungtensile direction
66
Streck-EinheitDrawing unit
7,7'7,7 '
Schlitzslot
8,8'8,8 '
Schlitzslot
99
Verlegevorrichtunglaying device

Claims (6)

  1. Artificial lawn having a play-capable upper layer and a cushioned layer (1), wherein the cushioned layer (1) comprises at least one foam-material layer having slots (7, 7', 8, 8') which completely penetrate the foam-material layer, characterized in that the cushioned layer (1) at least on one side is laminated with a non-woven fabric, a woven fabric, or a warp/weft-knitted fabric as an additional layer, wherein the additional layer is not conjointly slotted, and wherein the lamination is performed onto the stretched foam-material layer.
  2. Artificial lawn according to Claim 1, characterized in that the non-woven fabric, the woven fabric, or the warp/weft-knitted fabric is elongatable.
  3. Artificial lawn according to Claim 1 or 2, characterized in that the slots (7, 7', 8, 8') are disposed in at least two directions that mutually run at an angle of 30 to 90°.
  4. Artificial lawn according to Claim 1 or 2, characterized in that the slots (7, 7', 8, 8') are curved or run otherwise in a non-rectilinear manner.
  5. Artificial lawn according to one of Claims 1 to 4, characterized in that the slots run substantially in two directions that run in a mutually perpendicular manner.
  6. Use of a cushioned layer (1) for an artificial lawn having a play-capable upper layer, wherein the cushioned layer (1) comprises at least one foam-material layer having slots (7, 7', 8, 8') which completely penetrate the foam-material layer, characterized in that the cushioned layer (1) at least on one side is laminated with a non-woven fabric, a woven fabric, or a warp/weft-knitted fabric as an additional layer, wherein the additional layer is not conjointly slotted, and wherein the lamination is performed onto the stretched foam-material layer.
EP07821579.5A 2006-10-20 2007-10-19 Artificial lawn with cushioned layer Active EP2084329B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07821579T PL2084329T5 (en) 2006-10-20 2007-10-19 Artificial lawn with cushioned layer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006050480 2006-10-20
PCT/EP2007/061215 WO2008046912A1 (en) 2006-10-20 2007-10-19 Cushioned layer under an artificial lawn and method for laying a cushioned layer

Publications (3)

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EP2084329A1 EP2084329A1 (en) 2009-08-05
EP2084329B1 true EP2084329B1 (en) 2019-04-10
EP2084329B2 EP2084329B2 (en) 2022-02-23

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DK (1) DK2084329T4 (en)
ES (1) ES2733476T5 (en)
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Publication number Priority date Publication date Assignee Title
US8545964B2 (en) 2010-09-23 2013-10-01 Fred Svirklys Roll-form shock and drainage pad for outdoor field installations
ES2401631B1 (en) 2013-02-18 2013-11-11 Profesional Sportsverd Futbol, S. L. Mixed lawn system for sports floors and landscaped grounds and cultivation procedure of said mixed lawn
CA2928211A1 (en) * 2015-04-27 2016-10-27 Shaw Industries Group, Inc. Modular rollup artificial turf system

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WO2008046912A1 (en) 2008-04-24
PT2084329T (en) 2019-07-16
ES2733476T3 (en) 2019-11-29
EP2084329A1 (en) 2009-08-05
PL2084329T5 (en) 2022-05-02
PL2084329T3 (en) 2019-09-30
TR201909752T4 (en) 2019-07-22
ES2733476T5 (en) 2022-05-06
DK2084329T3 (en) 2019-07-22
DK2084329T4 (en) 2022-04-04
EP2084329B2 (en) 2022-02-23

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