EP1961865A1 - Artificial Turf - Google Patents

Artificial Turf Download PDF

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Publication number
EP1961865A1
EP1961865A1 EP08151177A EP08151177A EP1961865A1 EP 1961865 A1 EP1961865 A1 EP 1961865A1 EP 08151177 A EP08151177 A EP 08151177A EP 08151177 A EP08151177 A EP 08151177A EP 1961865 A1 EP1961865 A1 EP 1961865A1
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EP
European Patent Office
Prior art keywords
yarn
dtex
curly
monofilament yarn
artificial turf
Prior art date
Legal status (The legal status 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 status listed.)
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Application number
EP08151177A
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German (de)
French (fr)
Inventor
Arnoud Fiolet
Philippe Dierkens
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Domo NV
Original Assignee
Domo NV
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Filing date
Publication date
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Publication of EP1961865A1 publication Critical patent/EP1961865A1/en
Withdrawn legal-status Critical Current

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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
    • E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/445—Yarns or threads for use in floor fabrics
    • 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
    • D06N7/0065—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 characterised by the pile
    • 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
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • D10B2505/202—Artificial grass

Definitions

  • the present invention pertains to an artificial turf and to the yarns required therefore.
  • the object of the present invention is to provide a new type of artificial turf comprising a combination of straight and curly monofilament yarns.
  • the thus obtained artificial turf provides, on the one hand, the look of natural grass, and on the other hand, the known use of a well-known infill layer by filling for example sand and/or rubber particles for enhancing the elasticity of the surface of the artificial turf becomes superfluous.
  • the present invention provides a specific combination of structural shape and material for the yarns as a result of which tufts are formed which do not need infill material. Therefore, especially the application and the maintenance of such synthetic turfs is simplified. Also, recycling possibilities are strongly increased as a result of which these synthetic turfs are more environment-friendly.
  • the present invention is related to yarns, tufted on a carrier material. It is generally known that several yarns twisted or twined together are tufted in a carrier material. In this way standing tufts are formed, wherein each individual tuft is composed of a multiple of filaments.
  • the invention relates mainly to a tufted artificial turf comprising a flexible, water-permeable support fabric, provided with tufts, wherein each tuft comprises partly of straight monofilament yarn and partly of curly monofilament yarn, characterised in that said tufts are manufactured from a compound yarn composed from said straight monofilament yarn twined together with the curly monofilament yarn.
  • the support fabric comprises a flexible way water-permeable plastic material, preferably a laminate of a UV-stabilised tuft fabric from polypropylene, provided with a latex backing.
  • the specific weight of this laminate amounts preferably between 800 and 1500 g/m 2 , and more preferably between 1100 and 1400 g/m 2 .
  • the artificial turf according to the invention comprises tufts, manufactured from a compound yarn, i.e. from straight monofilament yarn and curly monofilament yarn, wherein the straight and curly monofilament yarns are twined together such that the curly monofilament yarn is nested around the straight monofilament yarn, wherein the curly monofilament yarn provides partly stability and partly elasticity to the straight monofilament yarn. Because of this, an infill with for example sand or rubber particles is superfluous.
  • the curly and straight monofilament yarns of said composed yarn are extruded from polyamide, for example polyamide 6, polyamide 6.6 and polyamide 6.12, and more preferably polyamide 6.
  • both the straight monofilament yarn and the curly monofilament yarn of said composed yarn each comprise preferably of 4 to 12 individual filaments, more preferably of 6 to 10 individual filaments, and most preferably of 8 individual filaments.
  • the thickness and width of the filaments are such that they resemble individual blades of grass; the width of the individual filaments preferably ranges between 0.5 and 2 millimetre, more preferably between 0.75 and 1.5 millimetre, and is most preferably equal to approximately 0.9 millimetre.
  • the thickness of the individual filaments is not only important to achieve the look of natural grass, but also to achieve the desired properties of elasticity.
  • the individual filaments usually have a thickness between 50 ⁇ m and 200 ⁇ m, more preferably between 100 ⁇ m and 150 ⁇ m and most preferably, it amount to approximately 140 ⁇ m.
  • the yarn number of the individual filaments of the straight monofilament yarn usually ranges between 500 and 2000 dtex, more preferably between 750 and 1500 dtex, and is most preferably equal to approximately 1000 dtex.
  • the yarn number of the individual filaments of the curly monofilament yarn usually ranges between 300 and 1500 dtex, more preferably between 500 and 1000 dtex, and most preferably is equal to approximately 750 dtex.
  • the total dtex value per tuft preferably ranges between 12,000 and 16,000, and more preferably between approximately 13,000 and 15,000, and is most preferably equal to approximately 14,000 dtex.
  • the individual filaments are manufactured in several shades, wherein the straight monofilament yarn preferably comprises 2 to 6 dark green and 2 to 6 olive green filaments, more preferably 3 to 5 dark green and 3 to 5 olive green, and most preferably 4 dark green and 4 olive green filaments.
  • the curly monofilament yarn preferably comprises 1 to 3 beige and 3 to 9 light green filaments, more preferably 1.5 to 4.5 beige and 2.5 to 7.5 light green, and most preferably 2 beige and 6 light green filaments.
  • the curly monofilament yarn is generally manufactured from a straight monofilament yarn that is subjected to one or more heat treatments. This treatment may take place as from the extrusion of the yarn and/or during the processing step and/or on the finished carpet.
  • the final curling and crimping is obtained after a heat treatment during the coating of the tuft fabric with a stabilizing agent, such as for example latex, as a result of which also the tufts become firmly attached in the tuft fabric.
  • the support fabric comprises a laminate of a tuft fabric with an additional layer of a stabilizing agent, preferably a latex, applied onto it.
  • the manufacturing of curly monofilament yarn by means of a heat treatment can be performed in 3 different ways, i.e. by means of a heat treatment of the monofilament yarn directly after extrusion and before the tufting process, by means of a heat treatment during the application of the adhesion material (latex) on the tuft fabric, or by means of a combination of both aforementioned heat treatments.
  • the straight monofilament yarn is subjected to a first heat treatment which takes place before the tufting process such that an initial curling arises.
  • the straight and partly curly monofilament yarn is tufted in line on a tuft fabric, after which a latex backing is applied to the back of aforementioned tuft fabric by means of a second heat treatment.
  • the application of the latex backing and the associated heat treatment completes on the one hand the curling and ensures on the other hand an optimum fixing of the tufts in the tuft fabric.
  • the curly monofilament has a shrinkage of at least 60 % and more preferably of at least 50 %. Therefore, the rest height of the curly yarn ranges between 1/5 to 3/5, preferably 1/3 to 3/5 and most preferably approximately 1/2 of the length of the straight monofilament yarn in the tuft. This height ratio on the support fabric ensures that a good elasticity and bonding strength to the artificial turf are obtained such that an infill becomes superfluous.
  • Both aforementioned monofilament yarns are subsequently twined together to form one yarn and this with a speed of approximately 30 turns per running meter wherein the curly monofilament yarn is nested around the straight monofilament yarn.
  • the finally obtained composed yarn has a yarn number which usually ranges between 10,000 dtex and 20,000 dtex, preferably between 12,000 and 16,000, more preferably between 13,000 and 15,000 and is most preferably approximately 14,000 dtex.
  • the filaments in a tuft all have the same length between 3 and 5 cm, more preferably between 3.5 cm and 4.5 cm and most preferably approximately between 3.7 and 3.9 cm.
  • the curly filaments in their curly state have a length ranging between 40 and 60 % with respect to the initial length.
  • the shrinkage is obtained by a heat treatment.
  • the compound yarn comprises 8 filaments curly monofilament yarn of polyamide 6 (nylon) with a compound dtex value of 6000 (8 filaments of each 750 dtex per filament) with a width of 0.9 mm, a thickness of 140 ⁇ m and a height of 38 mm in elongated form and a height of approximately 24 mm in curly form with 8 filaments straight monofilament (diamond structure) with a dtex value of 8000, a width of 0.9 mm and also a thickness of 140 ⁇ m.
  • the support material comprises a polypropylene tuft fabric which is UV-stabilised with a specific weight of approximately 164 g/m 2 provided with a latex backing with 1000 g/m 2 .
  • the obtained artificial turf have the following properties: Colour stability Scale 7 (DIN 54004) UV-Stability > 6,000 u (DIN 53387) Water permeability 6.10 -4 m/sec Flame retardancy Class 1 (DIN 51960) Pile anchoring > 30 N Chlorine resistance 4 - 5 (DIN 54019) Resistance to seawater 4 - 5 (DIN 54007)
  • the thus obtained composed yarns are tufted on a tuft fabric and provided with a water permeable backing, for example made of latex.
  • Tests were conducted to determine an optimal yarn construction for use in grass turfs according to the invention.
  • a first test consisted of a determination of the resistance to abrasion of yarns.
  • the test method consists of placing a sample of yarn on a rotating disk whereby two roughened wheels are placed on top of the sample with a defined force.
  • the loss of weight is determined, in this example after 4000 rotations and presented as promille loss of the original sample weight.
  • the loss of weight is determined on a sample of 10 cm diameter.
  • the yarns used in this are the following (TABLE II): TABLE II Yarn sample Loss of weight Straith monofilament yarn PA monofil straigth, 8 filaments X 500 dtex, thickness 50 ⁇ m 61 promille PA monofil straigth, 8 filaments X 1000 dtex, thickness 100 ⁇ m 42 promille PA monofil straigth, 8 filaments X 1000 dtex, thickness 150 ⁇ m 22 promille PA monofil straigth, 8 filaments X 1500 dtex, thickness 150 ⁇ m 16 promille Curly monofilament yarns PA monofil curly, 8 filaments X 350 dtex, thickness 50 ⁇ m 63 promille PA monofil curly, 8 filaments X 500 dtex, thickness 50 ⁇ m 60 promille PA monofil curly, 8 filaments X 500 dtex, thickness 150 ⁇ m 43 promille PA monofil curly, 8 filaments X 750 dtex, thickness 50 ⁇ m 58 promille PA monofil
  • PA straight monofilament yarn 8 filaments X1000dtex, thickness 150 ⁇ m + PA curly monofilament yarn: 8 filaments X 500 dtex, thickness 150 ⁇ m; twined together ⁇ PA straight monofilament yarn: 8 filaments X1000dtex, thickness 150 ⁇ m + PA curly monofilament yarn: 8 filaments X 750 dtex, thickness 150 ⁇ m; twined together + Yarn remains intact and stays nicely upright PA straight monofilament yarn: 8 filaments X1000dtex, thickness 150 ⁇ m + PA curly monofilament yarn: 8 filaments X 1000 dtex, thickness 150 ⁇ m; twined together ⁇ PA straight monofilament yarn: 8 filaments X1000dtex, thickness 150 ⁇ m sepearatly tufted in A/B position with PA curly monofilament yarn: 8 filaments X 750 dtex, thickness 150 ⁇ m - Carpet shows line pattern and is not usable
  • the ball/grass turf interaction was determined that is obtained with grass turfs according to the invention.
  • This test involves measuring of ball roll. FIFA applies amongst other things following criteria for ball roll of between 4m-8m.
  • Table IV gives a number of results of ball roll in function of the pile height of yarns used in the grass turf.
  • Table IV Pile height of Straight monofilament yarn Free pile (height above the curly yarn)
  • Ball roll 25mm 10mm 12m 35mm 15mm 7m 40mm 20mm 5m 45mm 25mm 8m
  • a pile height (straight monofilament yarn) of 40mm with 20mm free pile gives amongst other things a good result.

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

Abstract

The present invention pertains to a tufted artificial turf comprising a flexible, water-permeable support fabric provided with tufts, wherein the tufts comprise parts of straight monofilament yarn and parts of curly monofilament yarn, characterized in that said tufts are manufactured from a compound yarn formed by twining together said straight monofilament yarn with the curly monofilament yarn.

Description

  • The present invention pertains to an artificial turf and to the yarns required therefore.
  • The object of the present invention is to provide a new type of artificial turf comprising a combination of straight and curly monofilament yarns. The thus obtained artificial turf provides, on the one hand, the look of natural grass, and on the other hand, the known use of a well-known infill layer by filling for example sand and/or rubber particles for enhancing the elasticity of the surface of the artificial turf becomes superfluous.
  • Many patent applications describe yarns for the manufacture of synthetic turfs made of a variety of materials and combinations thereof. Often, combinations are presented of polyethylene, polypropylene, or block copolymers thereof. Further to the use of these materials, the use of polyamide 6 (nylon) is also known, for instance from the Japanese patent application JP-A-3.279.419 .
  • Apart from the choice of material, many structural shapes of yarns are known, among others straight monofill, fibrillated or monofill curled yarns.
  • The present invention provides a specific combination of structural shape and material for the yarns as a result of which tufts are formed which do not need infill material. Therefore, especially the application and the maintenance of such synthetic turfs is simplified. Also, recycling possibilities are strongly increased as a result of which these synthetic turfs are more environment-friendly.
  • The present invention is related to yarns, tufted on a carrier material. It is generally known that several yarns twisted or twined together are tufted in a carrier material. In this way standing tufts are formed, wherein each individual tuft is composed of a multiple of filaments.
  • The invention relates mainly to a tufted artificial turf comprising a flexible, water-permeable support fabric, provided with tufts, wherein each tuft comprises partly of straight monofilament yarn and partly of curly monofilament yarn, characterised in that said tufts are manufactured from a compound yarn composed from said straight monofilament yarn twined together with the curly monofilament yarn.
  • According to the invention the support fabric comprises a flexible way water-permeable plastic material, preferably a laminate of a UV-stabilised tuft fabric from polypropylene, provided with a latex backing. The specific weight of this laminate amounts preferably between 800 and 1500 g/m2, and more preferably between 1100 and 1400 g/m2.
  • The artificial turf according to the invention comprises tufts, manufactured from a compound yarn, i.e. from straight monofilament yarn and curly monofilament yarn, wherein the straight and curly monofilament yarns are twined together such that the curly monofilament yarn is nested around the straight monofilament yarn, wherein the curly monofilament yarn provides partly stability and partly elasticity to the straight monofilament yarn. Because of this, an infill with for example sand or rubber particles is superfluous.
  • In a preferred embodiment of the artificial turf according to the invention, the curly and straight monofilament yarns of said composed yarn are extruded from polyamide, for example polyamide 6, polyamide 6.6 and polyamide 6.12, and more preferably polyamide 6.
  • In a further preferred embodiment, both the straight monofilament yarn and the curly monofilament yarn of said composed yarn each comprise preferably of 4 to 12 individual filaments, more preferably of 6 to 10 individual filaments, and most preferably of 8 individual filaments.
  • The thickness and width of the filaments are such that they resemble individual blades of grass; the width of the individual filaments preferably ranges between 0.5 and 2 millimetre, more preferably between 0.75 and 1.5 millimetre, and is most preferably equal to approximately 0.9 millimetre.
  • The thickness of the individual filaments is not only important to achieve the look of natural grass, but also to achieve the desired properties of elasticity. The individual filaments usually have a thickness between 50 µm and 200 µm, more preferably between 100 µm and 150 µm and most preferably, it amount to approximately 140 µm.
  • The yarn number of the individual filaments of the straight monofilament yarn usually ranges between 500 and 2000 dtex, more preferably between 750 and 1500 dtex, and is most preferably equal to approximately 1000 dtex. Whereas the yarn number of the individual filaments of the curly monofilament yarn usually ranges between 300 and 1500 dtex, more preferably between 500 and 1000 dtex, and most preferably is equal to approximately 750 dtex. The total dtex value per tuft preferably ranges between 12,000 and 16,000, and more preferably between approximately 13,000 and 15,000, and is most preferably equal to approximately 14,000 dtex.
  • In a further preferred embodiment of the invention, the individual filaments are manufactured in several shades, wherein the straight monofilament yarn preferably comprises 2 to 6 dark green and 2 to 6 olive green filaments, more preferably 3 to 5 dark green and 3 to 5 olive green, and most preferably 4 dark green and 4 olive green filaments. The curly monofilament yarn preferably comprises 1 to 3 beige and 3 to 9 light green filaments, more preferably 1.5 to 4.5 beige and 2.5 to 7.5 light green, and most preferably 2 beige and 6 light green filaments.
  • The curly monofilament yarn is generally manufactured from a straight monofilament yarn that is subjected to one or more heat treatments. This treatment may take place as from the extrusion of the yarn and/or during the processing step and/or on the finished carpet. Preferably, the final curling and crimping is obtained after a heat treatment during the coating of the tuft fabric with a stabilizing agent, such as for example latex, as a result of which also the tufts become firmly attached in the tuft fabric. In its finished form the support fabric comprises a laminate of a tuft fabric with an additional layer of a stabilizing agent, preferably a latex, applied onto it.
  • According to present the invention, the manufacturing of curly monofilament yarn by means of a heat treatment can be performed in 3 different ways, i.e. by means of a heat treatment of the monofilament yarn directly after extrusion and before the tufting process, by means of a heat treatment during the application of the adhesion material (latex) on the tuft fabric, or by means of a combination of both aforementioned heat treatments. In a preferred embodiment the straight monofilament yarn is subjected to a first heat treatment which takes place before the tufting process such that an initial curling arises. Subsequently, the straight and partly curly monofilament yarn is tufted in line on a tuft fabric, after which a latex backing is applied to the back of aforementioned tuft fabric by means of a second heat treatment. The application of the latex backing and the associated heat treatment completes on the one hand the curling and ensures on the other hand an optimum fixing of the tufts in the tuft fabric. After aforementioned heat treatment(s), the curly monofilament has a shrinkage of at least 60 % and more preferably of at least 50 %. Therefore, the rest height of the curly yarn ranges between 1/5 to 3/5, preferably 1/3 to 3/5 and most preferably approximately 1/2 of the length of the straight monofilament yarn in the tuft. This height ratio on the support fabric ensures that a good elasticity and bonding strength to the artificial turf are obtained such that an infill becomes superfluous.
  • Both aforementioned monofilament yarns are subsequently twined together to form one yarn and this with a speed of approximately 30 turns per running meter wherein the curly monofilament yarn is nested around the straight monofilament yarn. The finally obtained composed yarn has a yarn number which usually ranges between 10,000 dtex and 20,000 dtex, preferably between 12,000 and 16,000, more preferably between 13,000 and 15,000 and is most preferably approximately 14,000 dtex.
  • Preferably, the filaments in a tuft all have the same length between 3 and 5 cm, more preferably between 3.5 cm and 4.5 cm and most preferably approximately between 3.7 and 3.9 cm. The curly filaments in their curly state have a length ranging between 40 and 60 % with respect to the initial length. In general, the shrinkage is obtained by a heat treatment.
  • The invention is further illustrated by means of the examples below which illustrate some preferred embodiments of the invention.
    • Example 1.
  • The compound yarn comprises 8 filaments curly monofilament yarn of polyamide 6 (nylon) with a compound dtex value of 6000 (8 filaments of each 750 dtex per filament) with a width of 0.9 mm, a thickness of 140 µm and a height of 38 mm in elongated form and a height of approximately 24 mm in curly form with 8 filaments straight monofilament (diamond structure) with a dtex value of 8000, a width of 0.9 mm and also a thickness of 140 µm. These yarns are twined together and subsequently this composed yarn is linearly tufted with approximately 140 stitches per running meter with a needle distance of 5/16", and a pile height of 38 mm such that a pile weight was obtained of approximately 2200 g/m2. The support material comprises a polypropylene tuft fabric which is UV-stabilised with a specific weight of approximately 164 g/m2 provided with a latex backing with 1000 g/m2.
  • The obtained artificial turf have the following properties:
    Colour stability Scale 7 (DIN 54004)
    UV-Stability > 6,000 u (DIN 53387)
    Water permeability 6.10-4 m/sec
    Flame retardancy Class 1 (DIN 51960)
    Pile anchoring > 30 N
    Chlorine resistance 4 - 5 (DIN 54019)
    Resistance to seawater 4 - 5 (DIN 54007)
    • Example 2
  • In a similar manner a number of other artificial turfs were tufted. Table I below gives the individual data for each type of filament.
    Curly PA monofilament Ex 2 Ex 3 Ex 4 Ex 5 Ex 6 Ex 7 Ex 8 Ex 9
    number 8 10 6 6 6 4 8 8
    dtex (per fil) 740 600 1300 1100 1200 1500 800 750
    length straight (mm) 40 42 38 39 45 40 38 46
    length (curly) 25 20 18 17 21 16 15 19
    width (mm) 0.6 0.8 1.4 0.9 1 0.95 0.85 0.6
    thickness (µm) 150 85 100 140 130 175 100 140
    Straight PA monofilament
    number 8 6 10 8 12 12 10 8
    dtex (by fil) 1000 1200 600 1500 1100 1000 1300 1200
    length 40 42 38 42 48 38 38 46
    width (mm) 0.8 0.9 0.5 1 0.9 0.8 1 0.7
    thickness (µm) 140 140 150 170 130 135 140 180
  • The thus obtained composed yarns are tufted on a tuft fabric and provided with a water permeable backing, for example made of latex.
    • Example 3 a) Taber abrasion test 4000cycli
  • Tests were conducted to determine an optimal yarn construction for use in grass turfs according to the invention.
  • A first test consisted of a determination of the resistance to abrasion of yarns. By means of the known Taber test resistance to abrasion of yarns is determined. The test method consists of placing a sample of yarn on a rotating disk whereby two roughened wheels are placed on top of the sample with a defined force. The loss of weight is determined, in this example after 4000 rotations and presented as promille loss of the original sample weight. Hereby the loss of weight is determined on a sample of 10 cm diameter. The yarns used in this are the following (TABLE II): TABLE II
    Yarn sample Loss of weight
    Straith monofilament yarn
    PA monofil straigth, 8 filaments X 500 dtex, thickness 50µm 61 promille
    PA monofil straigth, 8 filaments X 1000 dtex, thickness 100µm 42 promille
    PA monofil straigth, 8 filaments X 1000 dtex, thickness 150µm 22 promille
    PA monofil straigth, 8 filaments X 1500 dtex, thickness 150 µm 16 promille
    Curly monofilament yarns
    PA monofil curly, 8 filaments X 350 dtex, thickness 50µm 63 promille
    PA monofil curly, 8 filaments X 500 dtex, thickness 50µm 60 promille
    PA monofil curly, 8 filaments X 500 dtex, thickness 150µm 43 promille
    PA monofil curly, 8 filaments X 750 dtex, thickness 50µm 58 promille
    PA monofil curly, 8 filaments x 750 dtex, thickness 150µm 24 promille
    PA monofil curly, 8 filaments X 1000 dtex, thickness 200µm 21 promille
    • b) Lisport test 5000 cycli (5 years in practice)
  • This test is conducted with a device that consists of two rolling mills of each 28kg that are each provided with 150 studs. These make 5000 tours back and forth over a grass turf. The last rolling mill turns at half of the speed of the first mill to cause friction. After 5000 cycli one obtains an idea of the wear pattern and the resilience of the yarns. Following samples were hereby tested (TABLE III). TABLE III
    Sample of artificial grass turf consisting of Result Remarks
    PA straight monofilament yarn: 8 filaments X1000dtex, thickness 150µm + PA curly monofilament yarn: 8 filaments X 500 dtex, thickness 150µm; twined together ±
    PA straight monofilament yarn: 8 filaments X1000dtex, thickness 150µm + PA curly monofilament yarn: 8 filaments X 750 dtex, thickness 150µm; twined together + Yarn remains intact and stays nicely upright
    PA straight monofilament yarn: 8 filaments X1000dtex, thickness 150µm + PA curly monofilament yarn: 8 filaments X 1000 dtex, thickness 150µm; twined together ±
    PA straight monofilament yarn: 8 filaments X1000dtex, thickness 150µm sepearatly tufted in A/B position with PA curly monofilament yarn: 8 filaments X 750 dtex, thickness 150µm - Carpet shows line pattern and is not usable
    • c) determination of resilience
  • In this example, the ball/grass turf interaction was determined that is obtained with grass turfs according to the invention. This test involves measuring of ball roll. FIFA applies amongst other things following criteria for ball roll of between 4m-8m. Table IV gives a number of results of ball roll in function of the pile height of yarns used in the grass turf. Table IV
    Pile height of Straight monofilament yarn Free pile (height above the curly yarn) Ball roll
    25mm 10mm 12m
    35mm 15mm 7m
    40mm 20mm 5m
    45mm 25mm 8m
  • A pile height (straight monofilament yarn) of 40mm with 20mm free pile gives amongst other things a good result.
    • d) determination of friction coefficient
  • In this test the friction coefficient of different samples of artificial grass turfs according to the invention were tested (Table V), with indication of used yarns, tuft gauge (= i.e. distance between 2 yarns) height of the tufts, friction coefficient and general condition of the artificial grass turf. Table V
    yarn Tuft gauge Pile height Friction coefficient artificial grass turf
    4X1000dtex PA straight monofil
    + 4X750dtex PA curly monofil    		 3/16" 25mm 0,58 ±
    8X1000dtex PA straight monofil
    + 8X750dtex PA curly monofil    		 5/16" 38mm 0,26 + (*)
    8X1000dtex PA straight monofil
    + 8X750dtex PA curly monofil    		 5/8" 40mm 0,33 ±
    (*) less danger for burn injuries during sliding, provides a more natural aspect, yarns easier to cut on a tufting device
    • Example 4
  • In a preferred embodiment the invention provides a tufted artificial turf having following specifications:
    • The straight monofilament yarn is made of polyamide 6, and comprises 8 individual filaments, whereby the individual filaments each have a yarn number of 1000 dtex and a thickness of 150µm,
    • The curly monofilament yarn is made of polyamide 6, comprises 8 individual filaments, whereby the individual filaments each have a yarn number of 750dtex and a thickness of 150µm,
    • The straight monofilament yarn is twined together with the curly monofilament yarn,
    • Pile height of the tufts = 38mm
    • tuft gauge of 5/16"
    • no infill layer.
  • It is obvious that above given examples are not limiting for the invention.

Claims (12)

  1. Tufted artificial turf comprising a flexible, water-permeable support fabric provided with tufts, wherein the tufts comprise parts of straight monofilament yarn and parts of curly monofilament yarn, characterized in that said tufts are manufactured from a compound yarn composed by twining together said straight monofilament yarn with the curly monofilament yarn.
  2. Artificial turf according to claim 1, characterized in that said straight monofilament yarn and said curly monofilament yarn are manufactured from polyamide 6, polyamide 6.6 or polyamide 6.12, and preferably from polyamide 6.
  3. Artificial turf according to claims 1 or 2, characterized in that the resting height of the curly yarn is between 1/5 to 3/5, preferably 1/3 to 2/3 of the length of the straight monofilament yarn in the tufts and still more preferably amounts to approximately 1/2 thereof.
  4. Artificial turf according to any one of claims 1 to 3, characterized in that said straight and curly monofilament yarn each comprises 4 to 12 individual filaments, preferably 6 to 10 individual filaments, and more preferably 8 individual filaments.
  5. Artificial turf according to any one of claims 1 to 4, characterized in that said individual filaments of the straight monofilament yarn each have a yarn number of between 500 and 2000 dtex, preferably of between 750 and 1500 dtex, and most preferably of 1000 dtex.
  6. Artificial turf according to any one of claims 1 to 5, characterized in that said individual filaments of the curly monofilament yarn each have a yarn number of between 300 and 1500 dtex, preferably of between 500 and 1000 dtex, and most preferably of 750 dtex.
  7. Artificial turf according to any one of claims 1 to 6, characterized in that said individual filaments have a width of between 0.5 and 2 millimetre, preferably of between 0.75 and 1.5 millimetre, and most preferably of 0.9 millimetre.
  8. Artificial turf according to any one of claims 1 to 7, characterized in that said individual filaments have a thickness of between 50 µm and 200 µm, preferably of between 100 µm and 150 µm, and most preferably of 140 µm.
  9. Artificial turf according to any one of claims 1 to 8, characterized in that said composed yarn has a yarn number of between 10,000 and 20,000 dtex, preferably of between 12,000 and 16,000 dtex, more preferably of between 13,000 and 15,000 dtex, and most preferably of 14,000 dtex.
  10. Artificial turf according to any one of claims 1 to 9, characterized in that said tufts are arranged in rows which are located on mutual distances of between 4/16" and 6/16".
  11. Artificial turf according to any one of claims 1 to 10, characterized in that said tufts have an average height of between 30 to 50 mm, preferably of between 35 to 40 mm and most preferably of 38 mm.
  12. Artificial turf according to any one of claims 1 to 11, characterized in that it lacks an infill layer.
EP08151177A 2007-02-07 2008-02-07 Artificial Turf Withdrawn EP1961865A1 (en)

Applications Claiming Priority (1)

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BE2007/0050A BE1017459A3 (en) 2007-02-07 2007-02-07 ARTIFICIAL GRASS MAT.

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EP1961865A1 true EP1961865A1 (en) 2008-08-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010102921A3 (en) * 2009-03-12 2010-12-23 Oerlikon Textile Gmbh & Co. Kg Method and apparatus for the production of a turf yarn
US20230145157A1 (en) * 2020-04-23 2023-05-11 Basf Se Artificial turf

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010075098A1 (en) 2008-12-15 2010-07-01 Textile Management Associates, Inc. Method of recycling synthetic turf and infill product
US9855682B2 (en) 2011-06-10 2018-01-02 Columbia Insurance Company Methods of recycling synthetic turf, methods of using reclaimed synthetic turf, and products comprising same
CN103372280A (en) * 2012-04-18 2013-10-30 艾肯运动与健康公司 Treadbelts comprising a specialized surface, treadmills including such treadbelts, and related methods
EP2969058B1 (en) 2013-03-14 2020-05-13 Icon Health & Fitness, Inc. Strength training apparatus with flywheel and related methods
US9403047B2 (en) 2013-12-26 2016-08-02 Icon Health & Fitness, Inc. Magnetic resistance mechanism in a cable machine
US10433612B2 (en) 2014-03-10 2019-10-08 Icon Health & Fitness, Inc. Pressure sensor to quantify work
WO2015191445A1 (en) 2014-06-09 2015-12-17 Icon Health & Fitness, Inc. Cable system incorporated into a treadmill
US10258828B2 (en) 2015-01-16 2019-04-16 Icon Health & Fitness, Inc. Controls for an exercise device
US20210404126A1 (en) * 2015-03-09 2021-12-30 4427017 Canada Inc. Artificial turf with textured hydrophilic fibers
US20210404127A1 (en) * 2015-03-09 2021-12-30 4427017 Canada Inc. Artificial turf free of infill material
US10953305B2 (en) 2015-08-26 2021-03-23 Icon Health & Fitness, Inc. Strength exercise mechanisms
US10493349B2 (en) 2016-03-18 2019-12-03 Icon Health & Fitness, Inc. Display on exercise device
US10561894B2 (en) 2016-03-18 2020-02-18 Icon Health & Fitness, Inc. Treadmill with removable supports
US10272317B2 (en) 2016-03-18 2019-04-30 Icon Health & Fitness, Inc. Lighted pace feature in a treadmill
US10625137B2 (en) 2016-03-18 2020-04-21 Icon Health & Fitness, Inc. Coordinated displays in an exercise device
US10293211B2 (en) 2016-03-18 2019-05-21 Icon Health & Fitness, Inc. Coordinated weight selection
US10252109B2 (en) 2016-05-13 2019-04-09 Icon Health & Fitness, Inc. Weight platform treadmill
US10471299B2 (en) 2016-07-01 2019-11-12 Icon Health & Fitness, Inc. Systems and methods for cooling internal exercise equipment components
US10441844B2 (en) 2016-07-01 2019-10-15 Icon Health & Fitness, Inc. Cooling systems and methods for exercise equipment
US10500473B2 (en) 2016-10-10 2019-12-10 Icon Health & Fitness, Inc. Console positioning
US10376736B2 (en) 2016-10-12 2019-08-13 Icon Health & Fitness, Inc. Cooling an exercise device during a dive motor runway condition
TWI646997B (en) 2016-11-01 2019-01-11 美商愛康運動與健康公司 Distance sensor for console positioning
US10661114B2 (en) 2016-11-01 2020-05-26 Icon Health & Fitness, Inc. Body weight lift mechanism on treadmill
TWI680782B (en) 2016-12-05 2020-01-01 美商愛康運動與健康公司 Offsetting treadmill deck weight during operation
TWI756672B (en) 2017-08-16 2022-03-01 美商愛康有限公司 System for opposing axial impact loading in a motor
US10729965B2 (en) 2017-12-22 2020-08-04 Icon Health & Fitness, Inc. Audible belt guide in a treadmill
CN109023584A (en) 2018-07-02 2018-12-18 青岛青禾人造草坪股份有限公司 A kind of chinampa and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940522A (en) * 1971-05-27 1976-02-24 E. I. Du Pont De Nemours And Company Synthetic fibers and pile fabrics made therefrom
JPH03279419A (en) 1990-03-27 1991-12-10 Unitika Ltd Conjugate fiber
FR2719619A1 (en) * 1994-05-06 1995-11-10 Levasseur Sommer Artificial grass material
US20030099787A1 (en) * 2001-10-23 2003-05-29 Fink Wilbert E. Sports surface
BE1014936A6 (en) * 2003-03-05 2004-06-01 Domo Cabrita Nv Synthetic grass for e.g. sports pitches, has tufts formed by composite yarns comprising fibrillated yarns twisted with monofilament yarns

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1527622A (en) * 1975-06-24 1978-10-04 Smith Ass Ltd Carpeting
US4323612A (en) * 1979-05-10 1982-04-06 Monsanto Company Carpets having pile of crimped and non-crimped nylon filaments
JP3292897B2 (en) * 1993-10-07 2002-06-17 大塚化学株式会社 Artificial grass
US6468622B1 (en) * 1994-04-29 2002-10-22 Kleen-Tex Industries Inc. Track control mat and method of making the same
JP3735437B2 (en) * 1997-02-14 2006-01-18 株式会社ダスキン Rental mat
US6491991B2 (en) * 2000-02-14 2002-12-10 Southwest Recreational Industries, Inc. Artificial turf system
NL1015451C2 (en) * 2000-06-15 2001-12-19 Ten Cate Nicolon B V Artificial turf for sports fields.
US20080124496A1 (en) * 2003-12-10 2008-05-29 Textile Management Associates, Inc. Artificial turf with granule retaining fibers
US20080125237A1 (en) * 2003-12-10 2008-05-29 Textile Management Associates, Inc. Golf mat
US9267232B2 (en) * 2005-03-24 2016-02-23 Tarkett Inc. Synthetic turf system having an infill trapping structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940522A (en) * 1971-05-27 1976-02-24 E. I. Du Pont De Nemours And Company Synthetic fibers and pile fabrics made therefrom
JPH03279419A (en) 1990-03-27 1991-12-10 Unitika Ltd Conjugate fiber
FR2719619A1 (en) * 1994-05-06 1995-11-10 Levasseur Sommer Artificial grass material
US20030099787A1 (en) * 2001-10-23 2003-05-29 Fink Wilbert E. Sports surface
BE1014936A6 (en) * 2003-03-05 2004-06-01 Domo Cabrita Nv Synthetic grass for e.g. sports pitches, has tufts formed by composite yarns comprising fibrillated yarns twisted with monofilament yarns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010102921A3 (en) * 2009-03-12 2010-12-23 Oerlikon Textile Gmbh & Co. Kg Method and apparatus for the production of a turf yarn
CN102365399A (en) * 2009-03-12 2012-02-29 欧瑞康纺织有限及两合公司 Method and apparatus for the production of a turf yarn
CN102365399B (en) * 2009-03-12 2014-04-16 欧瑞康纺织有限及两合公司 Method and apparatus for the production of a turf yarn
US20230145157A1 (en) * 2020-04-23 2023-05-11 Basf Se Artificial turf

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