US20100040808A1 - Synthetic fiber and method of manufacture - Google Patents

Synthetic fiber and method of manufacture Download PDF

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Publication number
US20100040808A1
US20100040808A1 US11/597,017 US59701708A US2010040808A1 US 20100040808 A1 US20100040808 A1 US 20100040808A1 US 59701708 A US59701708 A US 59701708A US 2010040808 A1 US2010040808 A1 US 2010040808A1
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United States
Prior art keywords
synthetic
fiber
layer
synthetic material
layers
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Abandoned
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US11/597,017
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English (en)
Inventor
Frederik Jan Van Der Gaag
Marinus Hendrikus Olde Weghuis
Geurt Bastiaan Slootweg
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Ten Cate Thiolon BV
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Ten Cate Thiolon BV
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Application filed by Ten Cate Thiolon BV filed Critical Ten Cate Thiolon BV
Assigned to TEN CATE THIOLON B.V. reassignment TEN CATE THIOLON B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OLDE WEGHUIS, MARINUS HENDRIKUS, SLOOTWEG, GEURT BASTIAAN, VAN DER GAAG, FREDERIK JAN
Publication of US20100040808A1 publication Critical patent/US20100040808A1/en
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]

Definitions

  • This invention relates to synthetic fibers and methods for producing synthetic fibers for use in artificial grass sports fields.
  • the layer of synthetic material may consist of a mixture of different synthetic materials, for example, with one synthetic material serving to give the fiber a certain strength (against breaking or splitting), while another synthetic material in the mixture provides the fiber with a certain elasticity or flexibility or better sliding properties.
  • a drawback of such existing synthetic fibers is the fact that, due to the homogeneous structure all sub-properties of the fiber are homogeneously incorporated in the fiber. As a result, certain properties of the fiber may be less prominently present than is desirable, while other properties predominate more than is desirable. Therefore, the composition of currently available fibers is usually standardized and often their production and material costs are unnecessarily high.
  • the present invention provides a method for producing a synthetic fiber for use in an artificial grass sports field, comprising the steps of supplying a layer of synthetic material; and providing or obtaining the synthetic fiber from the layer of synthetic material wherein the layer of synthetic material comprises at least two layers of different synthetic materials using a co-extrusion process.
  • the invention also provides a synthetic fiber and an artificial lawn suitable for a sports field, including a substrate to which synthetic fibers according to the invention are attached.
  • the present invention relates to a method of producing a synthetic fiber for use in an artificial grass surface comprising: i) providing a layer of synthetic material comprising at least two layers of different synthetic materials having different function-specific properties; and ii) forming the synthetic fiber therefrom using a co-extrusion process.
  • the layer of synthetic material can be stretched or, after step ii), the synthetic fiber can be stretched to significantly improve the playing properties of an artificial grass surface including the synthetic fiber.
  • the present invention provides a more universal fiber, which, on the one hand, can be produced for a specific use and which, on the other hand, saves production and material costs.
  • FIGS. 1A-1D show different embodiments of a synthetic fiber according to the present invention.
  • FIGS. 2A and 2B schematically show a few embodiments of an artificial grass sports field provided with a synthetic fiber obtained by using the method according to the present invention.
  • the present invention provides a more universal fiber which, on the one hand, can be produced for a specific use and which, on the other hand, saves production and material costs.
  • the layer of synthetic material comprises at least two layers of different synthetic materials, using a co-extrusion process.
  • the co-extrusion process accomplishes a separation of the various properties of the synthetic materials that are used.
  • the synthetic fiber With a layered structure, it becomes possible to provide each layer with a function-specific property, which property does not need to be present elsewhere in the fiber, or needs to be present only to a markedly reduced degree. This makes it possible to select the formulation for the fiber specifically for a certain use, which, in addition to a more efficient material consumption, also results in a synthetic fiber with markedly improved playing and fiber properties than in the case of homogeneously composed known fibers.
  • the playing properties of the synthetic fiber are significantly improved by stretching the fiber after the co-extrusion process.
  • the selection of materials is important so that after the stretching process a fiber is provided with such strength properties in a transverse direction that the fiber will split less easily, for example.
  • a fiber When used in an artificial grass sports field, such a fiber, and consequently the artificial lawn, has a much longer life, and the artificial lawn requires much less maintenance, thus remaining playable longer. Furthermore, the risk of injury to a player is considerably reduced.
  • the fiber can comprise at least one monofilament or several twined monofilaments.
  • the fiber can be formed as a band, and more in particular the band fiber can be formed as a fibrillated band fiber.
  • the layer of synthetic material comprises a core layer of a first synthetic material having two sides, which core layer is surrounded on both sides by one or several outer layers, each consisting of a different synthetic material.
  • each layer of synthetic material has a function-specific property, which is not necessary or not functional elsewhere in the fiber.
  • the layers can have different thicknesses, depending on the desired function-specific properties of the synthetic fiber to be obtained.
  • the first synthetic material comprises a mixture of a polymer and a plastomer, in which preferably the ratio of the plastomer in the core layer is about 30 to about 80 weight percent and more preferably the ratio of the plastomer in the core layer is about 30 to about 50 weight percent.
  • At least one of the other synthetic materials includes a hydrophilic additive.
  • the artificial grass fiber thus obtained has the function-specific characteristic that it can absorb moisture (water). This keeps the artificial grass sports field moist longer, which has a positive effect on playing behavior (slides etc.). When the field is played on, the absorbed moisture is released, the same as with natural grass.
  • hydrophilic additive that can be used as the top layer or outer layer of the co-extrusion fiber is ethylene vinyl alcohol copolymer. Depending on the quantity of vinyl alcohol in the copolymer, this polymer is capable of absorbing a considerable amount of water.
  • hydrophilic additive is polyhydroxyethyl methylacrylate.
  • At least one of the other synthetic materials can comprise an antistatic additive.
  • any static electricity generated when the field is played on can discharge.
  • the material spread or strewn between the fibers which is used in many artificial grass sports fields, is statically charged during play and as a result migrates upwards in the field.
  • the granular strewing material can be spread through the air, which is less pleasant during play.
  • the antistatic additive also ensures that no static discharges will take place via the players.
  • the antistatic additive can be a polymer, especially a permanent antistatic agent, such as a polyamide or a polyether block amide.
  • the additive is a polyester block copolymer.
  • FIGS. 1A-1D show different embodiments of a synthetic fiber according to the present invention.
  • FIGS. 2A and 2B schematically show a few embodiments of an artificial grass sports field provided with a synthetic fiber obtained by using the method according to the present invention.
  • the fibers ( 10 , 20 , 30 , 40 ) are obtained from a foil of a synthetic material, which foil, obtained by co-extrusion, comprises at least two layers of different synthetic materials ( 11 , 12 ) as shown in FIG. 1A .
  • the layered structure of the synthetic fiber ( 10 , 20 , 30 , 40 ) according to the present invention makes it possible to provide each layer (sub-layers 11 and 12 in this embodiment) with a function-specific property.
  • the use of a synthetic material having a specific property in a particular part of the synthetic fiber obviates or strongly reduces the need for the presence of this synthetic material and the related function-specific property elsewhere in the fiber.
  • the sub-layer 11 which provides the synthetic fiber with the required mechanical strength (and rigidity) and, in particular, non-splitting properties such that the synthetic fiber used for the artificial grass sports field will not split as a result of being played on.
  • the synthetic fiber 20 is built up of three layers of three different synthetic materials indicated by reference numerals 21 , 22 , 23 .
  • the middle layer 21 is made of an inexpensive synthetic material that gives the fiber 20 its mechanical strength, while the outer layers 22 and 23 are made of different synthetic materials, each of which exhibit a different function-specific property, which property is located best on the outer side of the synthetic fiber rather than in the center.
  • the outer layers 21 and 22 can have an elastic property, for example, contrary to the inner layer 21 , which provides the fiber with a certain rigidity (against breaking or splitting), which elastic property of the outer layer 21 or 22 has a positive effect on the playing properties of the artificial grass sports field.
  • FIG. 1C shows an embodiment in which the outer layers 32 a and 32 b are made of the same synthetic material.
  • FIG. 1D shows a further, more complex layered structure of a synthetic fiber according to the present invention.
  • a layered synthetic fiber made up of a central core 41 and surrounded by different types of outer layers 42 a - 42 b or 43 a - 43 b , respectively, is obtained.
  • the synthetic fiber contrary to the known synthetic fibers, does not have a homogeneous structure in which all different synthetic materials and the related properties are homogeneously incorporated in the fiber.
  • certain properties of the fiber may be present less prominently than is desirable, whereas other properties are more predominantly present than desired.
  • the inner layers 11 , 21 , 31 and 41 are made of a more inexpensive synthetic material that in principle provides the fiber with a certain strength against breaking or splitting.
  • the outer layers 12 , 22 , 32 , 32 a - 32 b , 42 a - 42 b and 43 a - 43 b are made of a synthetic material that does not necessarily need to be present in the fiber core.
  • a specific embodiment can have an outer layer including an antistatic additive.
  • the antistatic additive prevents the fiber from being charged by means of static electricity generated as a result of the artificial grass sports field being played on.
  • the antistatic additive precisely ensures that the generated static electricity can discharge from the artificial grass sports field and, for example, will not discharge via the players, which can lead to unpleasant experiences.
  • a strewing material (usually made of a rubber-like material) is used, which, due to the static electricity that is generated, migrates upward in the artificial grass sports field and which is spread through the air as a result of the field being played on.
  • the airborne strewing material has a disturbing effect on the players.
  • the antistatic additive in particular comprises a permanent antistatic agent, for example, a polymer, such as a polyamide or polyether block amide.
  • a permanent antistatic agent for example, a polymer, such as a polyamide or polyether block amide.
  • the additive is a polyester block copolymer.
  • one of the outer layers (or both outer layers) can comprise a hydrophilic additive.
  • the artificial grass fiber thus obtained has the function-specific characteristic that it can absorb moisture (water) from the atmosphere, such as rain. This allows the artificial grass sports field to remain moist longer, just like a natural-lawn sports field, which has a positive effect on the playing behavior in particular when sliding, etc. While the field is being played on, the absorbed moisture is released, the same as with natural grass.
  • hydrophilic additive that can be used as the top layer or outer layer ( 12 , 22 - 23 , 32 a - 32 b , 43 a - 43 b ) of the co-extrusion fiber is ethylene vinyl alcohol copolymer. Depending on the quantity of vinyl alcohol in the copolymer, this copolymer can absorb a significant amount of water.
  • the middle layer ( 11 , 21 , 31 , 41 ) in this example gives the fiber its strength, while the relatively thin top layer ( 12 , 22 - 23 , 32 a - 32 b , 43 a - 43 b ) absorbs water.
  • This water can be absorbed from the air (in the form of rain, fog, etc.) or can be supplied by an active sprinkler installation. (Often, artificial grass sports fields are sprinkled just before they are played on.)
  • the absorbed water is released again, which reduces the risk of injury, for example when sliding. Furthermore, the absorbed water keeps the temperature of the field lower, since an artificial grass sports field can be heated by the sun, under adverse conditions to temperatures as high as 70° C.
  • a hydrophilic additive as the outer layer uses polyhydroxyethyl methacrylate.
  • a five-layer co-extrusion configuration is required, as shown in FIG. 1D .
  • the layers 32 a - 32 b are bonding layers for the hydrophilic layer 43 a - 43 b to the central layer 41 in that case.
  • the various layers of the artificial grass fiber are shown having different thicknesses.
  • the thicknesses as shown, however, are illustrative and do not correspond to the actual thicknesses of the produced artificial grass fibers.
  • the bonding layer 42 a - 42 b is considerably thinner than shown, usually about 1-5% of the total fiber thickness, while the other layers 41 - 43 a - 43 b are considerably thicker. If polyethylene is used as the middle layer 11 - 21 - 31 - 41 , ethylene vinyl alcohol copolymer functioning as the hydrophilic additive will bond to the middle layer without any filling bonding layers being used.
  • FIGS. 2A and 2B show a few embodiments of an artificial grass sports field in which a synthetic fiber according to the present invention can be applied.
  • the artificial grass sports field comprises a substrate 1 , to which several synthetic fibers 2 as obtained by using the method according to the present invention are attached at the locations indicated by reference numeral 3 , for example by tufting.
  • the synthetic fiber 2 is obtained from a layer of synthetic material, which material is produced from at least two different synthetic materials by means of a co-extrusion process.
  • the synthetic fiber can be individually attached to the substrate or as a bundle of, for example, intertwined fibers 2 a - 2 c . More in particular, the fiber that is obtained by co-extrusion can be a fibrillated band fiber.
  • the synthetic fiber according to the invention is a monofilament. Also in this case, several monofilaments can be twined to form a bundle, after which each bundle is attached to the substrate 1 .
  • the substrate has an open structure and comprises a grid of supporting yarns 1 a - 1 b , to which the synthetic fibers 2 are attached.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Filaments (AREA)
  • Road Paving Structures (AREA)
  • Multicomponent Fibers (AREA)
  • Laminated Bodies (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US11/597,017 2004-05-19 2005-04-11 Synthetic fiber and method of manufacture Abandoned US20100040808A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1026239 2004-05-19
NL1026239A NL1026239C2 (nl) 2004-05-19 2004-05-19 Werkwijze voor het vervaardigen van een kunststofvezel voor toepassing in een kunstgrassportveld alsmede een dergelijke kunststofvezel.
PCT/NL2005/000275 WO2005111281A1 (en) 2004-05-19 2005-04-11 Method for producing a synthetic fibre for use in an artificial grass sports field and such a synthetic fibre

Publications (1)

Publication Number Publication Date
US20100040808A1 true US20100040808A1 (en) 2010-02-18

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US11/597,017 Abandoned US20100040808A1 (en) 2004-05-19 2005-04-11 Synthetic fiber and method of manufacture

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US (1) US20100040808A1 (fi)
EP (1) EP1747306B2 (fi)
JP (1) JP2007538183A (fi)
KR (1) KR20070035003A (fi)
CN (1) CN1961101B (fi)
AU (1) AU2005243347A1 (fi)
EA (1) EA008915B1 (fi)
ES (1) ES2608853T5 (fi)
FI (1) FI1747306T4 (fi)
NL (1) NL1026239C2 (fi)
PT (1) PT1747306T (fi)
WO (1) WO2005111281A1 (fi)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080317978A1 (en) * 2004-06-17 2008-12-25 Gerardus Hubertus Smit Artificial Grass Turf and Infill for Sports Fields
US20090252900A1 (en) * 2006-10-23 2009-10-08 Geurt Bastiaan Slootweg Artificial grass fibre and artificial lawn thereof
US10323361B1 (en) * 2011-06-12 2019-06-18 Dale Karmie Synthetic turf system made with antistatic yarns and method of making
US20200308777A1 (en) * 2017-11-03 2020-10-01 Polytex Sportbelage Produktions-Gmbh Artificial turf fiber with a non-circular cladding

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EP1983103B1 (de) * 2007-04-19 2014-02-19 Reifenhäuser GmbH & Co. KG Maschinenfabrik Kunstrasen
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NL1035682C2 (nl) 2008-07-10 2010-01-12 Desseaux H Tapijtfab Kunstgrasveld.
NL1036418C2 (nl) 2009-01-14 2010-07-15 Ten Cate Thiolon Bv Kunststofvezel alsmede een kunstgrasveld voorzien van een dergelijke vezel.
CN101476174B (zh) * 2009-01-20 2011-11-30 江苏共创人造草坪有限公司 一种增强型人造草坪纤维及其制备方法
DE102009052848A1 (de) 2009-11-11 2011-05-12 Oerlikon Textile Gmbh & Co. Kg Verfahren und Vorrichtung zum Schmelzspinnen monofiler Grasfasern
EP2374917B1 (en) 2010-04-07 2013-02-13 Dow Global Technologies LLC Artificial turf yarn
WO2013006042A1 (en) * 2011-07-01 2013-01-10 Ten Cate Thiolon B.V. Synthetic fibre and an artificial lawn comprising such a fibre
WO2013046494A1 (ja) * 2011-09-30 2013-04-04 住友ゴム工業株式会社 人工芝および人工芝施設
EP2682157A1 (de) 2012-07-06 2014-01-08 Peter Osypka Stiftung Mapping Elektrode für den linken Vorhof des Herzens
CN103014898B (zh) * 2013-01-07 2014-11-12 江苏共创人造草坪有限公司 一种表面亲水的人造草纤维及人造草坪
CN103061233B (zh) * 2013-01-28 2015-05-06 广州爱奇实业有限公司 一种人造草皮的生产工艺
NL1040263C2 (en) 2013-06-19 2014-12-22 Micronext B V Cool artificial turf.
CN107988655B (zh) * 2017-12-29 2020-08-18 广州爱奇实业有限公司 草丝纤维及其制备方法及采用该草丝纤维制备的仿真草坪
AU2020347835A1 (en) 2019-09-16 2022-05-12 Mattex Dubai LLC Water-retaining artificial turf
KR102357998B1 (ko) * 2021-07-09 2022-02-08 주식회사 지에스티지 천연잔디와 유사하도록 구성되는 인조잔디 및 그의 제조방법
KR102419294B1 (ko) * 2021-09-13 2022-07-12 주식회사 지에스티지 내구성과 치수정밀도가 향상된 천연잔디와 유사하도록 구성되는 인조잔디 및 그의 제조방법

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
US20080317978A1 (en) * 2004-06-17 2008-12-25 Gerardus Hubertus Smit Artificial Grass Turf and Infill for Sports Fields
US8568852B2 (en) * 2004-06-17 2013-10-29 Ten Cate Thiolon B.V. Artificial grass turf and infill for sports fields
US20090252900A1 (en) * 2006-10-23 2009-10-08 Geurt Bastiaan Slootweg Artificial grass fibre and artificial lawn thereof
US8283016B2 (en) * 2006-10-23 2012-10-09 Ten Cate Thiolon, B.V. Artificial grass fibre and artificial lawn thereof
US10323361B1 (en) * 2011-06-12 2019-06-18 Dale Karmie Synthetic turf system made with antistatic yarns and method of making
US20200308777A1 (en) * 2017-11-03 2020-10-01 Polytex Sportbelage Produktions-Gmbh Artificial turf fiber with a non-circular cladding
US11788237B2 (en) * 2017-11-03 2023-10-17 Polytex Sportbelage Produktions—GmbH Artificial turf fiber with a non-circular cladding

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CN1961101A (zh) 2007-05-09
ES2608853T5 (es) 2024-06-07
FI1747306T4 (fi) 2024-02-01
EA200602146A1 (ru) 2007-04-27
EP1747306A1 (en) 2007-01-31
JP2007538183A (ja) 2007-12-27
ES2608853T3 (es) 2017-04-17
PT1747306T (pt) 2017-01-03
NL1026239C2 (nl) 2005-11-22
KR20070035003A (ko) 2007-03-29
CN1961101B (zh) 2012-08-22
EP1747306B2 (en) 2023-11-29
EA008915B1 (ru) 2007-08-31
AU2005243347A1 (en) 2005-11-24
EP1747306B1 (en) 2016-09-28

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