DE3780543T2 - METHOD FOR PRODUCING ARTIFICIAL GRASS AND ARTIFICIAL GRASS PRODUCED BY THEM. - Google Patents

METHOD FOR PRODUCING ARTIFICIAL GRASS AND ARTIFICIAL GRASS PRODUCED BY THEM.

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Publication number
DE3780543T2
DE3780543T2 DE8787201796T DE3780543T DE3780543T2 DE 3780543 T2 DE3780543 T2 DE 3780543T2 DE 8787201796 T DE8787201796 T DE 8787201796T DE 3780543 T DE3780543 T DE 3780543T DE 3780543 T2 DE3780543 T2 DE 3780543T2
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Germany
Prior art keywords
fibers
process according
artificial grass
films
grass
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Revoked
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DE8787201796T
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German (de)
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DE3780543D1 (en
Inventor
Antonius Vincentius Terhorst
Den Bosch Harm Van
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NIJVERDAL TEN CATE TEXTIEL
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NIJVERDAL TEN CATE TEXTIEL
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Classifications

    • 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
    • E01C13/10—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds for artificial surfaces for outdoor or indoor practice of snow or ice sports
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H11/00—Non-woven pile fabrics
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C17/00—Embroidered or tufted products; Base fabrics specially adapted for embroidered work; Inserts for producing surface irregularities in embroidered products
    • D05C17/02—Tufted products
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • 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
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/062—Load-responsive characteristics stiff, shape retention

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials For Medical Uses (AREA)
  • Prostheses (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Artificial Filaments (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Road Paving Structures (AREA)
  • Knitting Of Fabric (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Carpets (AREA)

Abstract

A method for manufacturing artificial grass consists of an underlayer and strip-like pile threads embedded therein, which threads protrude, as grass, on one side out of the underlayer, particularly for a sports field, for instance a football pitch. The object of the current invention is to make available a method which enables the manufacture of an artificial grass such that it meets requirements with respect to coefficient of friction/roughness. Use can be made of frizzing or crinkles to obtain the isotropic properties of the turf. An effective lowering of the coefficient of friction can be realized in this way. Use can be made for this purpose of a circle knit method or knitdeknit. The crinkles can be fixed by a heat treatment. As an alternative substances may be added (mixed coated or coextruded) reducing the friction coefficient.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Kunstgras mit einer Unterschicht und mit darin eingebetteten, streifenähnlichen Florfasern, wobei die Fasern als Gras nach einer Seite der Unterschicht vorstehen und wobei als Rohmaterial für die Fasern ein Polymer verwendet wird. Die Erfindung betrifft ferner nach dem obengenannten Verfahren hergestelltes Kunstgras. Ein derartiges Verfahren ist beispielweise aus der US-A-433728 bekannt.The invention relates to a method for producing artificial grass with a base layer and with strip-like pile fibers embedded therein, the fibers protruding as grass to one side of the base layer and a polymer being used as the raw material for the fibers. The invention also relates to artificial grass produced by the above-mentioned method. Such a method is known, for example, from US-A-433728.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der im Oberbegriff angegebenen Art zu schaffen, mittels dessen Kunstgras mit einer Struktur hergestellt werden kann, die ein Gleitagens als Teil der Fasern enthält. Ein derartiger Aufbau führt zu einer Grasoberfläche, die nicht notwendigerweise eine Nachbehandlung oder eine regelmäßige oder periodische Wartung erfordert.The invention is based on the object of creating a method of the type specified in the preamble, by means of which artificial grass can be produced with a structure that contains a slip agent as part of the fibers. Such a structure results in a grass surface that does not necessarily require post-treatment or regular or periodic maintenance.

Zu diesem Zweck ist das erfindungsgemäße Verfahren dadurch gekennzeichnet, daß dem Rohmaterial ein zweites Material mit unterschiedlicher Zusammensetzung zugesetzt wird, das den Reibungskoeffizienten vermindert.For this purpose, the method according to the invention is characterized in that a second material with a different composition is added to the raw material, which reduces the coefficient of friction.

Eine spezielle Ausführungsform des Verfahrens ist dadurch gekennzeichnet, daß das Rohmaterial ein Polypropylen ist.A special embodiment of the process is characterized in that the raw material is polypropylene.

Die Nederlande Sportfederatie NSF (Niederländischer Sportbund) hat neben anderen spezielle Erfordernisse hinsichtlich der Eigenschaften von Kunstgräsern festgelegt, einschließlich Forderungen hinsichtlich des Reibungskoeffizienten. Die NSF hat zusammen mit der Koninklijke Nederlande Voetbalbond (Fußballbund) die für Fußball anwendbaren Normen 2.a, 4.b, 4.c und 4.d übernommen. In einem solchen "Leroux"-Test wird der Reibungskoeffizient in der Form von Rauheit ausgedrückt. Diese Rauheit kann in einer charakteristischen Zahl ausgedrückt werden und muß so niedrig wie möglich liegen. Grundsätzlich ist ein Wert von höchstens 0,3 für ein Fußballfeld erforderlich. Zusätzlich kann von einer Kräuselung oder Faltung Gebrauch gemacht werden, um die isotropen Eigenschaften des Rasens zu erhalten. Eine effektive Verminderung des Reibungskoeffizient kann in dieser Weise realisiert werden. Zu diesem Zweck kann ein Rundstrickverfahren oder Stricken/Entstricken zum Einsatz kommen. Die Kräuselungen können in einem Ofen fixiert werden, beispielsweise mittels heißer Luft oder Dampf. Beispielsweise kann zumindest eine Behandlung bei einer Temperatur von etwa 130 ºC für eine Zeitspanne in der Größenordnung von 10 Minuten zum Einsatz kommen. Es kann nützlich sein, abhängig von den verwendeten Materialien, eine derartige Wärmebehandlung einige Male zu wiederholen.The Nederlande Sportfederatie NSF (Dutch Sports Federation) has, among other things, laid down specific requirements regarding the properties of artificial grass, including requirements regarding the coefficient of friction. The NSF, together with the Koninklijke Nederlande Voetbalbond (Football Federation), has adopted the standards 2.a, 4.b, 4.c and 4.d applicable to football. In such a "Leroux" test, the coefficient of friction is expressed in terms of roughness. This roughness can be expressed in a characteristic number and must be as low as possible. In principle, a value of no more than 0.3 is required for a football field. In addition, crimping or folding can be used to maintain the isotropic properties of the grass. An effective reduction in the coefficient of friction can be realized in this way. For this purpose, a circular knitting process or knitting/unknitting can be used. The gathers can be fixed in an oven, for example by means of hot air or steam. For example, at least a treatment at a temperature of about 130 ºC for a period of the order of 10 minutes can be used. It can be useful, depending on the materials used, to repeat such a heat treatment a number of times.

Polyäthylenterephthalat oder Polytetrafluoräthylen kann zum Beispiel in einem Verhältnis in der Größenordnung von 50 % : 50 % zugesetzt werden. Andere Substanzen können ebenfalls verwendet werden. Desweiteren können spezielle mechanische Techniken bei der Herstellung der Fasern verwendet werden, beispielweise eine Koextrusion einer Anzahl, zum Beispiel drei oder fünf, von Filmen aufeinander, einschließlich beispielsweise zumindest einer feuchteabsorbierenden Schicht.Polyethylene terephthalate or polytetrafluoroethylene can, for example, be added in a ratio of the order of 50%:50%. Other substances can also be used. Furthermore, special mechanical techniques can be used in the manufacture of the fibres, for example coextrusion of a number, for example three or five, of films on top of each other, including, for example, at least one moisture-absorbing layer.

Selbst "Superabsorber" können in diesem Zusammenhang angewendet werden. Die Funktion einer feuchteabsorbierenden Schicht ist die, Feuchtigkeit aufzunehmen und sie in diesem Moment abzugeben, wenn auf dem Feld gespielt wird, was zu einem verminderten Reibungskoeffizienten führt, aufgrund der freigegebenen Feuchtigkeit, ebenso bei trockenem Wetter. Eine Schichtstruktur aus beispielsweise drei koextruidierten Filmen kann aus einer Mittelschicht aus relativ starrem Polypropylen mit einer Dicke von 60 % bestehen, die auf jeder Seite eine Schicht mit einer Dicke von 20 % aufweist und aus einem anderen, flexibleren Material besteht, beispielsweise lineares Polyäthylen mit niedriger Dichte. Desweiteren kann Polyäthylenterephthalat verwendet werden. Dieses Material zeigt einen niedrigen Reibungskoeffizienten und besitzt ein (geringes) Feuchteabsorptionsvermögen.Even "superabsorbents" can be used in this context. The function of a moisture-absorbing layer is to absorb moisture and release it at the moment when playing on the field, resulting in a reduced coefficient of friction due to the moisture released, even in dry weather. A layered structure of, for example, three co-extruded films can consist of a middle layer of relatively rigid polypropylene with a thickness of 60%, which has a layer on each side with a thickness of 20% and consists of another, more flexible material, for example linear low-density polyethylene. Polyethylene terephthalate can also be used. This material has a low coefficient of friction and has a (low) moisture absorption capacity.

Eine Nachbehandlung kann zum Zusatz von Glättungssubstanzen als Deckschicht auf den Fluorfasern angewendet werden, beispielsweise aus Polytetrafluoräthylen und/oder Material auf Siliconbasis. Streifen können im Herstellbetrieb behandelt werden. Eine Wasserdispersion aus einer Gleitsubstanz kann hergestellt und auf die Fasern durch Sprühen oder andere Prozesse aufgebracht werden und das Wasser kann verdampft werden. Die Streifenförmigen Fasern können so beispielweise vorher durch eine Dispersion des Gleitmittels geleitet werden, oder ein Feld mit Kunstgras kann mit einer Walze gewalzt werden, die durch ein Flüssigkeitsbad läuft.A post-treatment can be used to add smoothing substances as a top layer on the fluorofibers, for example made of polytetrafluoroethylene and/or silicone-based material. Strips can be treated at the manufacturing plant. A water dispersion of a lubricant substance can be prepared and applied to the fibers by spraying or other processes and the water can be evaporated. For example, the strip-shaped fibers can be first passed through a dispersion of the lubricant, or a field of artificial grass can be rolled with a roller that runs through a liquid bath.

Beispiel 1example 1

Fasern aus etwa 90 % Polypropylen, etwa 8 % linearem Polyäthylen mit geringer Dichte und etwa 2 % CaCo&sub3; unter Zusatz von geringen Anteilen von Additiven, die ferner gebräuchlich sind zur Verbesserung der mechanischen, thermischen und Ultraviolettstabilität und dergleichen, wurden verwendet. Der Zusatz von CaCo&sub3; führt zu einem Ansteigen in Steifigkeit und vermindert die Tendenz der Florfasern, aufzusplitten. Es wurde ein dreifasiger Faden mit 3 x 2200 DTEX, 5 mm x 50 um verwendet. Faden gekräuselt.Fibers of about 90% polypropylene, about 8% linear low density polyethylene and about 2% CaCo₃ with the addition of small amounts of additives which are also commonly used to improve mechanical, thermal and ultraviolet stability and the like were used. The addition of CaCo₃ leads to an increase in stiffness and reduces the tendency of Pile fibers to be split. A three-ply thread with 3 x 2200 DTEX, 5 mm x 50 um was used. Thread crimped.

Beispiel 2Example 2

Fasern wie in Beispiel 1 gekräuselt. Kräuselungslänge 20-30 mm. Kräuselung mit Dampf fixiert, 130 ºC für 2 x 10 Minuten.Fibers curled as in example 1. Curl length 20-30 mm. Curl fixed with steam, 130 ºC for 2 x 10 minutes.

Beispiel 3Example 3

Fasern wie oben angegeben, mit vier Nadeln pro Zentimeter fibrilliert, Schnittlänge 8-10 mm.Fibers as indicated above, fibrillated with four needles per centimeter, cutting length 8-10 mm.

Beispiel 4Example 4

Anwendung einer Deckschicht. Fasern wie oben angegeben. Zum Glätten der Fasern wurde ein Oberflächenbehandlungsagens eingesetzt Die Oberflächenbehandlung bedeutet die Anwendung einer Flüssigkeit, um den Fasern die gewünschten Eigenschaften hinsichtlich ihrer Verarbeitung und Endeigenschaften zu vermitteln. Ein Oberflächenbehandlungsagens kann, falls erforderlich, in die Fasern durch Diffusion eindringen. In diesem Fall bestand das Oberflächenbehandlungsagens aus einer Mischung von Siliconölen und Polytetrafluoroäthylen Das Oberflächenbehandlungagens wurde in Wasser dispergiert. Die Dispersion wurde aufgesprüht. Nach Verdampfung des Wassers verblieben 1 bis 2 % aktive Substanzen oder Oberflächenbehandlungsagens pro Kilogramm der Florfasern.Application of a topcoat. Fibers as specified above. A surface treatment agent was used to smooth the fibers. Surface treatment means the application of a liquid to give the fibers the desired properties in terms of their processing and final properties. A surface treatment agent can, if necessary, penetrate into the fibers by diffusion. In this case, the surface treatment agent consisted of a mixture of silicone oils and polytetrafluoroethylene. The surface treatment agent was dispersed in water. The dispersion was sprayed on. After evaporation of the water, 1 to 2% of active substances or surface treatment agent remained per kilogram of pile fibers.

Beispiel 5Example 5

Ein typischer Teppichaufbau für künstlichen Fußballrasen wurde auf einer Nadelsetzmaschine mit 3/8 oder 5/16 - Teilung, einer Stichzahl von 14-16 pro 10 cm und einer Florhöhe von 32-35 mm hergestellt.A typical carpet construction for artificial football turf was produced on a needle-setting machine with 3/8 or 5/16 pitch, a stitch count of 14-16 per 10 cm and a pile height of 32-35 mm.

Die oben angeführten Normen wurden in allen Fällen erfüllt.The above standards were met in all cases.

Claims (21)

1. Verfahren zur Herstellung von Kunstgras, das eine Unterschicht und darin eingebettete, streifenähnliche Florfasern aufweist, wobei die Fasern als Gras aus einer Seite der Unterschicht vorstehen und wobei als Rohmaterial für die Fasern ein Polymer verwendet wird, dadurch gekennzeichnet, daß dem Rohmaterial ein zweites Material mit unterschiedlicher Zusammensetzung zugesetzt wird, das den Reibungskoeffizienten vermindert.1. A method for producing artificial grass comprising a base layer and strip-like pile fibers embedded therein, the fibers protruding as grass from one side of the base layer and a polymer being used as raw material for the fibers, characterized in that a second material with a different composition is added to the raw material, which reduces the friction coefficient. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Rohmaterial ein Polypropylen ist.2. Process according to claim 1, characterized in that the raw material is a polypropylene. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß Polytetrafluoräthylen oder Polyäthylenterephthalat mit dem Polymer gemischt ist, beispielweise in Form einer Vormischung.3. Process according to claim 1, characterized in that polytetrafluoroethylene or polyethylene terephthalate is mixed with the polymer, for example in the form of a premix. 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß das Mischungsverhältnis in der Größenordnung von 50 % : 50 % gewählt ist.4. Process according to claim 3, characterized in that the mixing ratio is in the order of 50%:50%. 5. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Menge von Polytetrafluoräthylen so ausgewählt ist, daß seine resultierende Menge etwa 2-7 % des Gesamtfasergewichtes trägt.5. A process according to claim 3, characterized in that the amount of polytetrafluoroethylene is selected so that its resulting amount accounts for about 2-7% of the total fiber weight. 6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zur Herstellung der Fasern beide Materialien gleichzeitig extrudiert werden.6. Process according to claim 1, characterized in that both materials are extruded simultaneously to produce the fibers. 7. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Fasern durch Co-Extrusion einer Anzahl von Filmen hergestellt werden, um die erforderlichen mechanischen Eigenschaften wie Reibungskoeffizient, Florsteifigkeit, Verschleißfestigkeit und Erholungsvermögen zu erhalten.7. Process according to one of the preceding claims, characterized in that the fibers are produced by co-extrusion of a number of films in order to obtain the required mechanical properties such as friction coefficient, pile stiffness, wear resistance and recovery capacity. 8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß zumindest ein Film mit feuchtigkeitsabsorbierenden Eigenschaften verwendet wird.8. Method according to claim 7, characterized in that at least one film with moisture-absorbing properties is used. 9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß ein "Superabsorber" verwendet wird, beispielsweise ein kreuzverbindbares Natriumpolyacrylat.9. Process according to claim 8, characterized in that a "superabsorbent" is used, for example a cross-linkable sodium polyacrylate. 10. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß drei Filme co-extrudiert werden, von denen der mittlere aus Polypropylen besteht, während die anderen Filme aus einem weicheren, flexibleren und/oder glatteren Material bestehen.10. Process according to claim 7, characterized in that three films are co-extruded, of which the middle one consists of polypropylene, while the other films consist of a softer, more flexible and/or smoother material. 11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß die äußeren Filme lineares Polyäthylen mit niedriger Dichte enthalten.11. A method according to claim 10, characterized in that the outer films contain linear low density polyethylene. 12. Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß die äußeren Filme Polyäthylenterephthalat enthalten.12. Process according to claim 10, characterized in that the outer films contain polyethylene terephthalate. 13. Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß die äußeren Filme eine relative Dicke in der Größenordnung von 20 % der Gesamtfaserdicke aufweisen.13. Process according to claim 10, characterized in that the outer films have a relative thickness of the order of 20% of the total fiber thickness. 14. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß gekräuselte Fasern verwendet werden.14. Process according to claim 1, characterized in that crimped fibers are used. 15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß die Kräuselung der Fasern durch eine Wärmebehandlung fixiert wird.15. Method according to claim 14, characterized in that the curling of the fibers is fixed by a heat treatment. 16. Verfahren nach Anspruch 15, dadurch gekennzeichnet, daß die vorgekräuselten Fasern zumindest einer Aufwärmung auf etwa 130 ºC für eine Zeitspanne in der Größenordnung von 10 Minuten ausgesetzt werden.16. A method according to claim 15, characterized in that the pre-crimped fibers are subjected to at least one heating to about 130 ºC for a period of the order of 10 minutes. l7. Verfahren nach Anspruch 16, dadurch gekennzeichnet, daß Dampf verwendet wird.l7. Process according to claim 16, characterized in that steam is used. 18. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Fasern einer Faserbildung durch Durchstechen der streifenähnlichen Fasern mit Nadeln ausgesetzt werden.18. A method according to any one of the preceding claims, characterized in that the fibers are subjected to fiber formation by piercing the strip-like fibers with needles. 19. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Fasern oder das fertiggestellte Kunstgras einer Nachbehandlung ausgesetzt werden zum Anbringen einer Deckschicht an die Fasern, die eine Gleitsubstanz enthält, die Polytetrafluoräthylen oder ein Material auf Siliconbasis enthält.19. A method according to any one of the preceding claims, characterized in that the fibers or the finished artificial grass are subjected to a post-treatment for applying a covering layer to the fibers, which contains a lubricating substance containing polytetrafluoroethylene or a silicone-based material. 20. Verfahren nach Anspruch 19, dadurch gekennzeichnet, daß eine wässrige Lösung aus der Gleitsubstanz hergestellt wird, die den Fasern durch Sprühen oder andere geeignete Prozesse zugeführt wird, und daß man das Wasser verdampfen läßt.20. A method according to claim 19, characterized in that an aqueous solution is prepared from the lubricating substance, which is supplied to the fibers by spraying or other suitable processes, and that the water is allowed to evaporate. 21. Kunstgras, das mit einem Verfahren nach einem der vorstehenden Ansprüche hergestellt wurde.21. Artificial grass produced by a process according to any one of the preceding claims.
DE8787201796T 1986-09-12 1987-09-14 METHOD FOR PRODUCING ARTIFICIAL GRASS AND ARTIFICIAL GRASS PRODUCED BY THEM. Revoked DE3780543T2 (en)

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NL8602312A NL8602312A (en) 1986-09-12 1986-09-12 METHOD FOR MANUFACTURING AN ARTIFICIAL GRASSMAT AND ARTIFICIAL GRASSMAT OBTAINED THEREFROM

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DE3780543T2 true DE3780543T2 (en) 1993-01-21

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NL8602312A (en) 1988-04-05
EP0259940A3 (en) 1990-10-10
ATE78537T1 (en) 1992-08-15
EP0259940B1 (en) 1992-07-22
DE3780543D1 (en) 1992-08-27
ES2033298T3 (en) 1993-03-16
EP0259940A2 (en) 1988-03-16
GR3005414T3 (en) 1993-05-24

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