WO2013006042A1 - Fibre synthétique et gazon artificiel la comprenant - Google Patents

Fibre synthétique et gazon artificiel la comprenant Download PDF

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Publication number
WO2013006042A1
WO2013006042A1 PCT/NL2012/050453 NL2012050453W WO2013006042A1 WO 2013006042 A1 WO2013006042 A1 WO 2013006042A1 NL 2012050453 W NL2012050453 W NL 2012050453W WO 2013006042 A1 WO2013006042 A1 WO 2013006042A1
Authority
WO
WIPO (PCT)
Prior art keywords
synthetic fibre
fibre
shaped pattern
wave shaped
synthetic
Prior art date
Application number
PCT/NL2012/050453
Other languages
English (en)
Inventor
Jean-Claude Auguste
Harry R MA
Original Assignee
Ten Cate Thiolon B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE201120103403 external-priority patent/DE202011103403U1/de
Priority claimed from US13/174,997 external-priority patent/US10793973B2/en
Priority to AU2012278394A priority Critical patent/AU2012278394B2/en
Priority to RU2014101667A priority patent/RU2637261C2/ru
Priority to ES12733231T priority patent/ES2734059T3/es
Priority to KR1020147002828A priority patent/KR20140071325A/ko
Application filed by Ten Cate Thiolon B.V. filed Critical Ten Cate Thiolon B.V.
Priority to EP12733231.0A priority patent/EP2726674B1/fr
Priority to CN201280032429.8A priority patent/CN103764915B/zh
Priority to PL12733231T priority patent/PL2726674T3/pl
Priority to KR1020207036244A priority patent/KR102373501B1/ko
Publication of WO2013006042A1 publication Critical patent/WO2013006042A1/fr
Priority to ZA2014/00486A priority patent/ZA201400486B/en

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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
    • 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
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • 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

  • Synthetic fibre and an artificial lawn comprising such a fibre.
  • the present invention relates to synthetic fibers and artificial lawn comprising such a fibre. More particularly, the invention relates to grass-like monofilament type fibers having a curved cross section and an artificial grass lawn, especially an artificial grass sports field, comprising such a fibre. DESCRIPTION OF THE PRIOR ART
  • Natural grass is often used intensively and as a result thereof and as a result of others such as varying weather influences, sustain a great deal of damage.
  • a number of artificial lawns have been introduced to provide an alternative for natural grass. These artificial lawns are used both indoors as well as outdoors.
  • a well known example of such an outdoor artificial lawn is an artificial grass sport field, for example, for playing soccer, field hockey, tennis, American football and the like.
  • WO 2010/082816 A1 in the name of the same applicant such an artificial lawn is disclosed.
  • a drawback of synthetic fibres used for artificial lawns is that they tend to assume a flat orientation relative to the ground surface during use. This can result in so- called “bare patches" in the lawn and can thus increase the risk of injuries, decrease the playing characteristics and/or give a less natural look, etc.
  • a thick layer of infill can be provided on the artificial lawn.
  • Such a thick layer of infill is for example disclosed in EP 1 158099 A2. Installing this thick layer of infill is, however, more labor intensive than installation of a natural lawn. Furthermore substantially more maintenance is required as the infill, over time, gets a less uniform distribution due to non-uniform use of the lawn.
  • An alternative for the thick layer of infill is to provide an artificial lawn having synthetic fibres which have an increased stiffness and resilience. This result can be achieved by changing the chemical composition and/or the processing method. This, however, is undesirable because it will lead to a more complex production process and/or abrasive artificial lawn with an increased risk of injuries.
  • WO 2010/082816 A1 Another solution for the problem as described above is to adapt the geometry of the synthetic fibre, for example as disclosed in WO 2010/082816 A1.
  • the fibre disclosed herein has such a geometry that it has an increased resistance to the loads applied thereon when playing a sport on the field.
  • the surface of the fibre however is smooth and in combination with used chemical compositions result in a shiny, non natural, synthetic look.
  • WO 2005/005730 A1 a fibre is disclosed comprising stiffness-enhancing agents. These agents, i.e. protrusion ribs, increase the fibre's stiffness/resilience and because of the non-smooth surface exhibits a light scattering effect, decreasing the synthetic fibre's shiny look.
  • a synthetic fibre of the monofilament type for use in an artificial lawn is provided, in particular for use in an artificial sports lawn, which synthetic fibre has a curved cross section, wherein the synthetic fibre has a centre line arc lenght (L) to maximum thickness (T) ratio (L/T) of less than 8. More particular, in a further aspect, the centre line arc length (L) to maximum thickness ratio (L/T) is between 4.5 and 3.8, and more preferably between 4.4 and 4.0.
  • the synthetic fibre has a convex surface radius (R1) to concave surface radius (R2) ratio (R1/R2) of less than 0.9. More particularly the convex surface radius (R1) to concave surface radius (R2) ratio (R1/R2) is between 0.6 and 0 and even more particular between 0.35 and 0. In yet a further embodiment the synthetic fibre has a linear mass density between 1000 tex and 2500 tex.
  • a synthetic fibre having stiffness-enhancing agents is known. These agents, arranged as protrusion ribs, increase the stiffness of the fibre.
  • the stiffness-enhancing agents are provided at a central axis of the fibre or at both ends of the wings of the fibre. These stiffness-enhancing agents do on the one hand increase the stiffness of the fibre but do on the other hand increase the risk of fracture or splitting of the fibre. This however is a unwanted side-effect of such a design.
  • the fibre is exposed to a large load applied thereon. As a result of such a large load the fibre exhibits material stress, which stress is concentrated on weak points of the fibre. These weak points are points where due to a non-smooth surface of the fibre the stress is concentrated.
  • ribs on a fibre exhibit a non-smooth transition at the point where the rib shape protrudes, a concentration of stress at this point will directly during use of the field, or inevitably after time, cause the fibre to fracture or split.
  • A1 have a certain thickness to centre line arc length ratio, which ratio, amongst others, determine properties/characteristics of the fibre such as flexibility, resilience and flexural strength.
  • this thickness is the maximum thickness, and is located at the central portion of the fibre (see reference “T” in figures 1 a-d for example).
  • the centre line arc length is the length of the centre line (see reference “L” in figures 1 a-d for example).
  • W over all width
  • the ratio of a fibre according to the invention is determined not by the width of the fibre but by the length of the centre arc line.
  • a synthetic fibre according to a first aspect of the invention has a l_/T ratio of less than 8, preferably between 4.5 and 3.8, and even more preferably between 4.4 and 4.0.
  • the fibre has a R1/R2 ratio of less than 0.9, preferably between 0.6 and 0, and even more preferably between 0.35 and 0.
  • the fibre has a linear mass density between 1000 tex and 2500 tex.
  • a synthetic fibre according to a first aspect or to the first and more of the above stated aspects of the invention has improved aesthetics (e.g., appearance) and mechanical properties and closely simulates natural turf.
  • prior art synthetic fibres show a non optimal stiffness upon a load applied thereon
  • a synthetic fibre according to an aspect of the invention having a L/T, R1/R2 ratio within the range of linear mass density as described above, has an increased optimal stiffness upon a load applied thereon.
  • the fibre exhibits increased and more optimal combination of resilience, flexibility, strength and stiffness.
  • the curved cross section has a central portion having a maximum thickness and tapered edges having a minimum thickness.
  • the fibre geometry of such a fibre thickness combination provides desirable balance of stiffness and flexibility, as well as of bending resilience of the fibre, preventing a flat orientation in the artificial lawn.
  • the cross sectional shape has a circular segment shaped cross section
  • the synthetic fibre has a convex side which is curved and a side formed by a straight line.
  • a synthetic fibre according to an aspect of the invention can be provided with a convex side and on the other side a line which is anywhere between a straight line and a strong concave line.
  • a synthetic fibre that is, according to an aspect of the invention, provided with a wave shaped pattern around the circumferential surface has, with respect to prior art fibres such as for example the fibre known from WO 2005/005730, an increased stiffness, because all waves of the pattern do function as stiffness enhancements.
  • a further advantage lies in the smooth transitions of the surface contour having a multiple wave shaped pattern. This wave shaped pattern exhibits an increased stiffness without an increased risk of fracture or splitting of the fibre. All load applied on the fibre during use is divided along the whole surface of the fibre by the multiple waves. Because of this enhanced stress distribution, no stress concentration point exist on the surface of the fibre. It is therefore for a fibre having such a wave shaped pattern less likely to split or fracture.
  • the wave shaped pattern can also be arranged and extended continuously in the longitudinal direction.
  • the choice of the chemical composition is limited.
  • Several polymers can be used for the production of the fibres.
  • polyethylene, polypropylene, polyamide or a combination thereof can be used.
  • a fibre is produced from such a compositions it has a shiny effect over its surface. This shiny effect gives the fibre a non natural look.
  • a fibre having a wave shaped patterned surface does provide a solution to this problem. No change in chemical composition or use of additives is needed.
  • the wave shapes on the fibre surface have a significant light scattering effect, and therefore the fibre has a more "dull" look.
  • the wave patterned surface reflects light in different directions resulting in the light scattering effect.
  • the synthetic fibre can be provided with either a circular segment shaped cross section or a cross section having a convex side and a side formed by a straight line.
  • Fibre characteristics of an artificial fibre according to an aspect of the invention having a curved cross section with a maximum thickness central portion and tapered edges with a wave shaped pattern around its circumference can be further optimized by changing the amount of and/or adjusting its size/dimension of the wave shapes.
  • Increasing the amount of wave shapes will increase the light scattering effect, making the fibre more dull, and therefore more natural like.
  • Increase the size/dimension of the wave shapes will lead to an increased stiffness of the fibre, because the waves function as stiffness-enhancing means. Larger waves will exhibit a larger stiffness- enhancing effect.
  • the wave shaped pattern is a sine wave shaped pattern.
  • the advantage of a sine wave shaped pattern is that it has an even smoother wave transition in between the antinodes of the pattern. Therefore the fibre can resist an even greater load without losing stiffness and without an increased risk of splitting/fracture.
  • the wave shaped pattern is a sickle shaped pattern.
  • more surface of the fibre is embossed, i.e. sunken. Most of the light striking the surface of the fibre, strikes the fibre at embossed locations. These light rays are reflected, however not back towards the light source, they are reflected towards a different position within the embossed sickle shape. The light rays in this way are scattered, resulting in a shadow casting effect giving the fibre a more natural look because of the decreased shininess.
  • the wave shaped pattern on a convex side of the curved synthetic fibre has an equal, number of antinodes as that, on a concave side of the curved synthetic fibre.
  • the antinodes of the wave shaped pattern on the convex side of the curved synthetic fibre can be positioned opposite to the nodes of the wave shaped pattern on the concave side of the curved synthetic fibre.
  • the wave shaped pattern on the convex side of the curved synthetic fibre has a larger number of antinodes than that on the concave side of the curved synthetic fibre.
  • the number of antinodes on either the convex side or the concave side is at least 4 but not more than 30.
  • At least some waves of the wave pattern have different dimensions.
  • the characteristics of the fibre can be changed.
  • a combination of effects can be achieved. For example large waves can be alternated with small ones combining different effects like stiffness, light scattering effect, fibre resilience, and the like.
  • a synthetic fibre of the monofilament type for use in an artificial lawn is provided, in particular for use in an artificial sports lawn, which synthetic fibre has a curved cross section, wherein the circumferential surface of the synthetic fibre is provided with a wave shaped pattern.
  • the wave shaped pattern is arranged in the longitudinal direction of the fibre.
  • the wave shaped pattern is a sine wave shaped pattern or a sickle June 30, 2011 shaped pattern.
  • the invention also provides in an embodiment an artificial lawn, in particular an artificial sports lawn, comprising a substrate having artificial fibres according to any of the features described above attached thereto.
  • Fig. 1a-1 b show preferred embodiments of a synthetic fibre having a centre line arc length to maximum thickness ratio according to an aspect of the invention.
  • Fig. 1 c-1d show preferred embodiments of a synthetic fibre having a centre line arc length to maximum thickness ratio according to an aspect of the invention and a circumference provided with a wave shaped pattern.
  • Fig. 2-11 show a synthetic fibre according to other aspects of the invention wherein the fibre has different cross sectional shapes and the fibre is provided with different shapes around the circumferential surface;
  • Fig. 12 and 13 schematically show a few embodiments of an artificial lawn comprising a synthetic fibre according to the invention.
  • Fig. 1 a shows in a cross sectional view an embodiment of the invention wherein with reference number 10a a synthetic/artificial fibre, for example a synthetic grass sports fibre is illustrated, which is preferably of a monofilament type obtained by an extrusion process.
  • a synthetic/artificial fibre for example a synthetic grass sports fibre is illustrated, which is preferably of a monofilament type obtained by an extrusion process.
  • the bending radius 10a6 or amount of curvature of the fibre 10a shown in figure 1a has an effect on the characteristics of the artificial lawn in which it is provided. Increasing the curvature will increase the flexural stiffness of the fibre, which as a result thereto will not unnecessarily assume a flat orientation in the artificial lawn of which the fibre 10a forms part. Increasing the stiffness, however, can decrease the playing characteristics of the artificial lawn because when played on, it can lead to an increased risk of injuries and in particular when sliding tackles are made thereon.
  • An optimal stiffness is therefore required to on the one hand prevent a flat orientation and on the other hand still provide a relative soft player friendly artificial lawn with low risk of injuries.
  • An artificial fibre having such characteristics is in an embodiment of the invention disclosed in figures 1 a-1d.
  • Figure 1a shows that the fibre 10a has a curved shape, which curve radius 10a6 shown in figure 1a is only indicative.
  • the invention is not restricted to the curvature shown in figure 1 a, also a more curved fibre or a less curved fibre are considered incorporated in an embodiment of the invention.
  • the ratio between the concave surface radius 10a7 (R2) and the convex surface radius 10a8 (R1) is in this embodiment less than 0.9, and preferably between 0.6 and 0, and even more preferably between 0.35 and 0.
  • the fibre shown in figure 1 b has a flat surface at its concave side R2.
  • the fibres used therein should also have an optimal flexibility and resilience. Flexibility can prevent the fibre from splitting or fracture when undergoing high material stress when being played on. Resilience is needed for the fibre to re-assume an erect orientation after impact of forces applied thereon during play.
  • the fibre 10a shown in figure 1 a is tapered near the edges 10a1 a,
  • the fibre 10a shown here has relative thin edges 10a1a, 10a1 b. Increasing this thickness will increase the stiffness of the fibre.
  • the edges 10a1a and 10a1 b are preferably round.
  • the fibre 10 according to the invention does therefore not only have non-sharp edges, which have a positive effect on the playing characteristics, it also decreases the risk of injuries when for example making a sliding or tackle.
  • the centre line arc length 10a6 of the fibre 10a disclosed in figure 1 a is clearly larger than the thickness T 10a3, measured at the middle, central part 10a1 c of the fibre.
  • the centre line arc length 10a6 is determined by, and defined as, the length of dotted line Rc 10a6 from one end of the fibre 10a1 a to the other 10a1 b.
  • the ratio (l_/T) between the centre line arc length 10a6 and the maximum thickness 10a3 is less than 8, preferably between 4.5 and 3.8, and even more preferably between 4.4 and 4.0.
  • the linear mass density of a fibre according to an aspect of the invention and according to the preferred embodiment disclosed by figure 1 is in the range between 1000 tex and 2500 tex.
  • the centre arc line length or thickness of a fibre according to an aspect of the invention can be calculated when the tex and one of the centre arc line length and thickness is given.
  • the fibre is a fibre 10a having a l_/T ratio as it is described above, the fibre 10a exhibits improved characteristics.
  • Study shows that especially the stiffness of a fibre 10a according to this aspects has substantially increased with respect to prior art fibres.
  • the fibre 10a characteristics are such that not only a sufficient resilience and flexibility is achieved, but also that it exhibits a flexural stiffness such that it will not unnecessarily assume a flat orientation in the artificial lawn, or the artificial grass sports field in case of a synthetic grass sports fibre of which the fibre 10a forms part of.
  • Such a fibre according to an aspect of the invention and according to figures 1 a-1 d, are preferably made of polypropylene, polyethylene, polyamide, a copolymer, or a blend of one or more of the these polymers.
  • the fibre may therefore be made of rubber, which is permanently elastic synthetic polymer, or of a synthetic ( copolymer which will remain within the elastic range upon being subjected to a load.
  • the fibre is a fibre 10c as shown in figure 1 c, being provided with a wave shaped pattern around the circumferential surface.
  • the wave shaped pattern is provided with nodes 10c9b and antinodes 10c9a.
  • the fibre 10c shown in figure 1 c has an unequal amount of nodes 10c9b and antinodes 10c9a on both sides.
  • the concave side of the fibre 10c, which side is above the centre portion 10c1c of the fibre 10c, is in this preferred embodiment provided with seven nodes 10c9b and six antinodes 10c9a.
  • the convex side of the fibre 10c which side is below the centre portion 10c1 c of the fibre 10c, is in this preferred embodiment provided with eleven nodes 10c9b and ten antinodes 10c9a.
  • the nodes 10c9b of the fibre function as stiffness-enhancing means and the size, amount and position can be changed to influence the stiffness needed for a particular artificial lawn.
  • the way the fibre 10c is provided with a wave shaped surface increases it's natural look.
  • Light rays striking the surface of the fibre 10c are directed in a different direction than the direction they originated from.
  • Parallel rays of light striking a fibre 10c according to the invention having a wave shaped surface will be directed to different directions.
  • the amount of waves/antinodes and nodes and the size/dimension of the waves influence this light scattering effect.
  • Study showed that a fibre 10c according to the invention which is provided with a wave shaped pattern as indicated in figure 1 c has an increased light scattering effect and therefore such a natural look that it closely reassembles real grass.
  • a fibre 20 is provided with a wave shaped pattern, which is a sine wave shape pattern.
  • a wave shaped pattern which is a sine wave shape pattern.
  • Such a pattern has even smoother transitions in-between the positive 21a and negative antinodes 21 b.
  • the nodes 21c disclosed in figure 2 lack shape edges.
  • the smooth transition between the antinodes (positive 21a, and negative 21 b) prevent the fibre from splitting or fracture, and an increased lifetime is herewith achieved.
  • the fibre 20 shown in figure 2 has relative small and sharp edges 20a and 20b and an optimal L/T ratio of 3.8. This ratio however is at its maximum 5, preferably it lies between 3 and 4.5 and more preferably between 3.5 and 4 and is as indicated above, optimal at a ratio of 3.8.
  • the concave side of the fibre 20 is provided with eight nodes 21c and seven antinodes 21 a, 21 b.
  • the other side which in this figure lies below the central portion 20c of the fibre 20, being the convex side of the fibre 20, is provided with ten nodes 21 c and 9 antinodes 21 a, 21 b.
  • a fibre 30 has a curved cross section with a wave shaped pattern around the circumferential.
  • the wave shaped pattern consists of nodes 31c and positive antinodes 31a.
  • the negative side of a sine shape, being the negative antinode, is absent in this pattern.
  • the advantage of such a pattern is that it has a larger amount of stiffness enhancing means provided around its circumferential, as each positive antinode 31a functions as such a stiffness enhancing mean.
  • the fibre 30 has round edges 30a, 30b which are relatively thin.
  • the L/T ratio of the fibre 30 shown in figure 3 is at its optimum at 3.8.
  • the concave side of an embodiment of the fibre 30 shown in figure 3 is provided with seven (positive) antinodes 31a and eight nodes 31c, and on its covex side the fibre 30 is provided with nine (positive) antinodes 31 a and ten nodes 31c.
  • a fibre 40 has a curved cross section with a wave shaped pattern around the circumferential.
  • the wave shaped pattern consists of nodes 41 c and negative antinodes 41 b.
  • Such a wave shaped pattern is likely, because of its shape, to concentrate light rays in the negative antinode 41 b waves.
  • a shadow casting effect is achieved increasing the natural likeness of the fibre 40 by making the fibre 40 more "dull" looking.
  • the L/T ratio of the fibre 40 shown in figure 4 is at its optimum at 5.1.
  • the concave side of an embodiment of the fibre 40 shown in figure 4 is provided with seven (negative) antinodes 41 b and eight nodes 41c. On its convex side, the fibre 40 is provided with nine (negative) antinodes 41 b and ten nodes 41c.
  • a fibre 50 has a curved cross section with a wave shaped pattern around the circumference.
  • the wave shaped pattern consists of nodes 51c and both negative antinodes 51 b as well as positive antinodes 51 a.
  • Such a wave shaped pattern will have a shadow casting effect which is different on the concave side of the fibre 50 with respect to the convex side of the fibre 50.
  • the fibres 50 can be provided in bundles in an artificial lawn or artificial grass sports field, and they tend to assume a different orientation with respect to each other. When looking at an artificial lawn or sports field provided with such fibres 50 they seem to have different colors which increases its natural look.
  • the L/T ratio of the fibre 50 shown in figure 5 is at its optimum at 4.3.
  • the concave side of an embodiment of the fibre 50 shown in figure 5 is provided with seven (negative) antinodes 51 b and eight nodes 51c and on its convex side the fibre 50 is provided with nine (positive) antinodes 51 a and ten nodes 51c.
  • Figure 6 shows an embodiment of the invention wherein a fibre 60 has a curved cross section with a wave shaped pattern around the circumference.
  • the wave shaped pattern consists of nodes 61 c and both negative antinodes 61 b on the convex side as well as positive antinodes 61a on its concave side.
  • Such a wave shaped pattern will have a shadow casting effect which is different on the concave side of the fibre 60 as to the convex side of the fibre 60.
  • the fibres 60 tend to assume a different orientation with respect to each other and will therefore seem to have different colors which increases its natural look.
  • the L/T ratio of the fibre 60 shown in figure 6 is at its optimum at 4.3.
  • the concave side of an embodiment of the fibre 60 shown in figure 6 is provided with seven (positive) antinodes 61a and eight nodes 61 c and on its convex side, the fibre 60 is provided with nine (negative) antinodes 61 b and ten nodes 61c.
  • a fibre 70 has a curved cross section with a wave shaped pattern around the circumferential, however the fibre is, seen in cross sectional view, flat at one side.
  • the wave shaped pattern which in this embodiment is a sine shaped pattern, consists of nodes 71c and both negative antinodes 71 b as well as positive antinodes 71 a.
  • Such a sine shaped pattern will decrease the risk of splitting or fracture due to the smooth transitions at the nodes.
  • the L/T ratio of the fibre 70 shown in figure 7 is at its optimum at 2.7.
  • the flat side of an embodiment of the fibre 70 shown in figure 7 is provided with seven (both positive and negative) antinodes 71a, 71 b and eight nodes 71c and on its convex side, the fibre 70 is provided with nine (both positive and negative) antinodes 71 a, 71 b and ten nodes 51c.
  • the fibre 80 has a curved cross section with a wave shaped pattern around the circumferential, however the fibre is, seen in cross sectional view, flat at one side.
  • the wave shaped pattern consists of nodes 81c and positive antinodes 81a.
  • the L/T ratio of the fibre 80 shown in figure 8 is at its optimum at 2.7.
  • the flat side of this embodiment of the fibre 80 is provided with seven (positive) antinodes 81a and eight nodes 81c and on its convex side, the fibre 80 is provided with nine (positive) antinodes 81a and ten nodes 81c.
  • a fibre 90 has a curved cross section with a wave shaped pattern around the circumference, wherein the fibre is, seen in cross sectional view, flat at one side.
  • the wave shaped pattern consists of nodes 91c and negative antinodes 91 b.
  • the L/T ratio of the fibre 90 shown in figure 9 is at its optimum at 2.9.
  • the flat side of this embodiment of the fibre 90 is provided with seven (negative) antinodes 91 b and eight nodes 91c and on its convex side the fibre 90 is provided with nine (negative) antinodes 91 b and ten nodes 91c.
  • a fibre 100 has a curved cross section with a wave shaped pattern around the circumferential, wherein the fibre is, seen in cross sectional view, flat at one side.
  • the wave shaped pattern consists of nodes 101c and both positive and negative antinodes 101 a, 101 b.
  • the l_/T ratio of the fibre 100 shown in figure 10 is at its optimum at 2.9.
  • the flat side of this embodiment of the fibre 100 is provided with seven (negative) antinodes 101 b and eight nodes 101 c and on its convex side the fibre 100 is provided with nine (positive) antinodes 101 a and ten nodes 101c.
  • a fibre 1 10 has a curved cross section with a wave shaped pattern around the circumferential, wherein the fibre is, seen in cross sectional view, flat at one side.
  • the wave shaped pattern consists of nodes 11 1c and both positive and negative antinodes 1 11 a, 1 11 b.
  • the l_/T ratio of the fibre 110 shown in figure 11 is at its optimum at 2.9.
  • the flat side of this embodiment of the fibre 1 10 is provided with seven (positive) antinodes 1 11 a and eight nodes 1 11 c and on its convex side the fibre 1 10 is provided with nine (negative) antinodes 1 11 b and ten nodes 11 1c.
  • Figures 12 and 13 show a few embodiments of an artificial lawn such as an artificial grass sports field in which a synthetic fibre according to the invention can be used.
  • the artificial lawn comprises a backing 1 , to which the several synthetic fibres 2 (corresponding to the fibres 10a-d, 20, 30, 40, 50, 60, 70, 80, 90, 100 and 1 10 shown in figures 1 to 11) are attached at the locations indicated by reference numeral 3, for example by tufting or weaving.
  • the extruded synthetic fibre 2 may be individually attached to the backing 1 or in a bundle of, for example twined, fibres 2a-2c.
  • the backing member in figure 13 has an open structure and is composed of a grid of supporting yarns 1 a-1 b, to which the synthetic fibres 2 are attached.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Artificial Filaments (AREA)
  • Woven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

L'invention concerne une fibre synthétique de type monofilamentaire destinée à être utilisée dans un gazon artificiel, en particulier un gazon artificiel de terrain de sport. La fibre selon l'invention présente une coupe transversale courbe, une longueur d'arc de ligne centrale d'une épaisseur maximale inférieure à 8, de préférence entre 4,5 et 3,8, idéalement entre 4,4 et 4, la surface circonférentielle de la fibre comportant un motif de forme ondulée.
PCT/NL2012/050453 2011-07-01 2012-06-27 Fibre synthétique et gazon artificiel la comprenant WO2013006042A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
KR1020207036244A KR102373501B1 (ko) 2011-07-01 2012-06-27 합성 섬유 및 이러한 섬유를 포함하는 인공 잔디밭
PL12733231T PL2726674T3 (pl) 2011-07-01 2012-06-27 Włókno syntetyczne i sztuczny trawnik zawierający takie włókno
RU2014101667A RU2637261C2 (ru) 2011-07-01 2012-06-27 Синтетическое волокно и искусственный газон, содержащий такое волокно
ES12733231T ES2734059T3 (es) 2011-07-01 2012-06-27 Fibra sintética y un césped artificial que comprende tal fibra
KR1020147002828A KR20140071325A (ko) 2011-07-01 2012-06-27 합성 섬유 및 이러한 섬유를 포함하는 인공 잔디밭
AU2012278394A AU2012278394B2 (en) 2011-07-01 2012-06-27 Synthetic fibre and an artificial lawn comprising such a fibre
EP12733231.0A EP2726674B1 (fr) 2011-07-01 2012-06-27 Fibre synthétique et gazon artificiel la comprenant
CN201280032429.8A CN103764915B (zh) 2011-07-01 2012-06-27 合成纤维和包含这种纤维的人造草坪
ZA2014/00486A ZA201400486B (en) 2011-07-01 2014-01-21 Synthetic fibre and an artificial lawn comprising such a fibre

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DE201120103403 DE202011103403U1 (de) 2011-07-01 2011-07-01 Synthetische Faser und Kunstrasen mit einer solchen Faser
US13/174,997 US10793973B2 (en) 2011-07-01 2011-07-01 Synthetic fibre and an artificial lawn comprising such a fibre

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CN108951363A (zh) * 2018-09-21 2018-12-07 张家港翔盛塑业科技有限公司 C形亚光加强型人造草丝

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KR102419294B1 (ko) * 2021-09-13 2022-07-12 주식회사 지에스티지 내구성과 치수정밀도가 향상된 천연잔디와 유사하도록 구성되는 인조잔디 및 그의 제조방법

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CN108951363A (zh) * 2018-09-21 2018-12-07 张家港翔盛塑业科技有限公司 C形亚光加强型人造草丝

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KR20140071325A (ko) 2014-06-11
TR201910153T4 (tr) 2019-08-21
AU2012278394B2 (en) 2016-10-27
AU2012278394A1 (en) 2013-05-09
RU2014101667A (ru) 2015-08-10
RU2637261C2 (ru) 2017-12-01
ES2734059T3 (es) 2019-12-04
KR20210005736A (ko) 2021-01-14
ZA201400486B (en) 2015-09-30
EP2726674A1 (fr) 2014-05-07
EP2726674B1 (fr) 2019-04-10
CN103764915A (zh) 2014-04-30
KR102373501B1 (ko) 2022-03-10
PL2726674T3 (pl) 2019-09-30
CN103764915B (zh) 2017-03-08

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