EP3421665B1 - Artificial turf for simulating natural grass - Google Patents

Artificial turf for simulating natural grass Download PDF

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Publication number
EP3421665B1
EP3421665B1 EP17193385.6A EP17193385A EP3421665B1 EP 3421665 B1 EP3421665 B1 EP 3421665B1 EP 17193385 A EP17193385 A EP 17193385A EP 3421665 B1 EP3421665 B1 EP 3421665B1
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EP
European Patent Office
Prior art keywords
shape
artificial grass
grass yarns
straight
artificial
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
EP17193385.6A
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German (de)
English (en)
French (fr)
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EP3421665A1 (en
Inventor
Kang YU
Faping QIN
Xingyu Liu
Bo Yu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Bellinturf Industrial Co Ltd
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Qingdao Bellinturf Industrial Co Ltd
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Application filed by Qingdao Bellinturf Industrial Co Ltd filed Critical Qingdao Bellinturf Industrial Co Ltd
Publication of EP3421665A1 publication Critical patent/EP3421665A1/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
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41G—ARTIFICIAL FLOWERS; WIGS; MASKS; FEATHERS
    • A41G1/00—Artificial flowers, fruit, leaves, or trees; Garlands
    • A41G1/009—Artificial grass
    • 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 relates to the field of artificial turf, and more specifically relates to an artificial turf for simulating natural grass.
  • An artificial turf is an industrial product made by professional production facility with plastic, chemical fiber as raw materials.
  • the artificial turf can meet the requirements of long-time sports, it is relatively smooth and can be easily maintained , which makes it widely used in football, tennis, hockey, baseball and other fields.
  • the artificial turf has many tufts of artificial grass yarns simulating grass blades.
  • Those artificial grass yarns generally have a single color, a single yarn sectional shape and a single form, for example, most of them have a single color of green, a flat sectional shape and an straight form, which lack good functionality.
  • the artificial turf is obviously different from natural grass. With the improvement of people's living standard and holding of large-scale international and domestic events, the market scale of artificial turf is rapidly expanding, demand and quality requirements for artificial turfs are getting higher and higher, especially the demand for artificial turf highly simulating natural grass continues to increase. At the same time, higher requirements are put forward for the functionality of the artificial turf.
  • FIG. 1 shows a schematic view of the structure of an existing artificial turf.
  • the artificial turf comprises a base fabric a1, straight artificial grass yarns a2 and curly artificial grass yarns a3 tufting on the base fabric a1.
  • the color of the straight artificial grass yarns a2 is green, while that of the curly artificial grass yarns a3 is thatch color.
  • Document US 2007/0237921 A1 discloses the preamble of independent claim 1.
  • An object of the present invention is to provide an artificial turf for simulating natural grass, so as to enable the artificial turf to have better natural grass simulation effect.
  • an artificial turf for simulating natural grass comprising: a base fabric, artificial grass yarns tufting on a side of the base fabric and an latex backing on an opposite side of the base fabric.
  • the artificial grass yarns having at least two different forms including an straight form and a curly form, and the straight artificial grass yarns having at least two different colors.
  • the straight artificial grass yarns and/or the curly artificial grass yarns having matte light and/or bright light surfaces.
  • the straight artificial grass yarns having at least two of the following colors: green, yellow and brown; depth of the colors of the straight artificial grass yarns (2) based on the application field, season and/or use thereof.
  • the straight artificial grass yarns having at least two of the following colors: emerald green, dark green, light green, yellow green, beige, light brown and thatch color; combination of the colors of the straight artificial grass yarns (2) based on the application field, season and/or use thereof.
  • straight artificial grass yarns having the following colors: light green, dark green, yellow green and thatch color.
  • cross sections of the straight artificial grass yarns having a plurality of different shapes and the cross sections of the curly artificial grass yarns having at least one shape.
  • the cross sections of the straight artificial grass yarns having at least two of the following shapes: a rectangular shape, a triangular shape, a diamond shape), a dual-diamond shape, an olivary shape, a wavy shape, a ribbed shape, a tri-ribbed shape, a trefoil shape, a hollow shape, a C shape, a D shape, an X shape, an S shape, a W shape, a V shape, a U shape and an M shape, the cross sections of the curly artificial grass yarns having at least one of the following shapes: a rectangular shape, a diamond shape and a ribbed shape.
  • the cross sections of the straight artificial grass yarns having at least two of the following shapes: a rectangular shape, a triangular shape, a diamond shape, a dual-diamond shape, a wavy shape, a D shape, an S shape and a W shape.
  • the cross sections of the straight artificial grass yarns having at least two of the following shapes: a ribbed shape, an olivary shape, a tri-ribbed shape, a trefoil shape, a hollow shape, a C shape, an X shape, a V shape, a U shape and an M shape.
  • the thicknesses of the straight artificial grass yarns are same or different, and a filament dtex thereof ranging from 200 dtex to 3000 dtex,and the thicknesses of the curly artificial grass yarns are same or different, and a filament dtex thereof ranging from 200 dtex to 2000 dtex.
  • the straight artificial grass yarns and the curly artificial grass yarns separately tufting and arranged in every other row or tuft together on the base fabric, or the straight artificial grass yarns and the curly artificial grass yarns tufting together and arranged in every other row with the separately tufting straight artificial grass yarns and/or curly artificial grass yarns.
  • the pile height of the straight artificial grass yarns ranging from 8 mm to 80 mm.
  • the artificial grass yarns having at least an straight form and a curly form tuft on a base fabric, the straight artificial grass yarns having at least two different colors, such that the appearance of the formed artificial turf has better natural grass simulation effect, and combinations can be made according to specific functional requirements of the application of the artificial turf, thus improving applicability of the artificial turf.
  • FIG. 2A is a schematic view of the structure of an embodiment of the artificial turf for simulating natural grass according to the present invention.
  • the artificial turf for simulating natural grass comprises: a base fabric 1, artificial grass yarns tufting on a side of the base fabric 1 and an adhesive (not shown) coated on an opposite side of the base fabric 1.
  • the artificial grass yarns having at least two different forms including an straight form and a curly form, and the straight artificial grass yarns 2 having at least two different colors.
  • manufacturing of artificial grass yarns in different forms are different.
  • firstly mixed material is extruded by an extruder at a proper temperature, then it is subjected to processes of cooling, heat drawing, heat setting, etc., and then get rolled.
  • a process of compressive deformation at a high temperature may be added after the process of heat setting, such that the artificial grass yarns are formed to be curly.
  • the artificial grass yarns in different forms can be ply-twisted by means of a ring twisting and winding machine.
  • the twisted artificial grass yarns tuft on the base fabric according to a predetermined grass pile height and gauge into a semi-finished artificial turf by means of a tufting machine, then the semi-finished artificial turf is placed on an adhesive on the back of the base fabric and then baked by an oven and made into a finished artificial turf.
  • On the upper layer of the artificial turf are straight artificial grass yarns, while on the lower layer are curly artificial grass yarns.
  • the artificial grass yarns having at least an straight form and a curly form tuft on a base fabric, the straight artificial grass yarns having at least two different colors, such that the appearance of the artificial turf has better natural grass simulation effect, and combination of the colors of the straight artificial grass yarns 2 can be based on specific functional requirements of the application of the artificial turf, thus improving the applicability of the artificial turf.
  • At least three extruders can be used simultaneously to produce straight artificial grass yarns 2, and after the processes of drawing and setting, the straight artificial grass yarns 2 are ply-twisted together with the curly artificial grass yarns 3 by a ring twisting and winding machine.
  • the straight artificial grass yarns 2 can be directly ply-twisted with the manufactured curly artificial grass yarns 3 without being rolled, thus simplifying the process and making the overall process more smooth and more efficient.
  • invest in manpower and winding device can be reduced.
  • the use of at least three extruders to manufacture straight artificial grass yarns has at least two advantages: first, straight artificial grass yarns having different colors and/or different thicknesses and/or different sectional shapes are manufactured simultaneously; second, the production efficiency of straight artificial grass yarns is improved.
  • the artificial grass yarns in these two forms may also be twisted separately, i.e., the straight artificial grass yarns 2 and curly artificial grass yarns 3 are respectively rolled and then twisted.
  • both ply-twist or separate twist can realize the form shown in FIG. 2B , i.e., the straight artificial grass yarns 2 and curly artificial grass yarns 3 tuft on the base fabric 1 together.
  • FIGS. 3A and 3B show the forms of the straight artificial grass yarns 2 and the curly artificial grass yarns 3 separately tufting and arranged in every other row.
  • the straight artificial grass yarns 2 and the curly artificial grass yarns 3 may also tuft together and arranged in every other row with the separately tufting straight artificial grass yarns 2 (referring to FIGS 4A, 4B ), or arranged in every other row with the curly artificial grass yarns 3, or arranged in every other row with both the straight artificial grass yarns 2 and the curly artificial grass yarns 3 at the same time.
  • the straight artificial grass yarns having with at least two of the following colors: green, yellow and brown. Depth the colors of the straight artificial grass yarns 2 can be based on the application field, season and/or use thereof. Specifically, according to the depth of color, green may include emerald green, dark green, light green, yellow green, etc., yellow may include beige, thatch color, etc., and brown may include light brown and dark brown. Correspondingly, the straight artificial grass yarns specifically having at least two of the following colors: emerald green, dark green, light green, yellow green, beige, light brown and thatch color, and combination and choice of the colors of the straight artificial grass yarns 2 can be based on the application field, season and/or use thereof.
  • the artificial grass yarns may have a bright surface or a matte surface in light effect, wherein a bright surface has better effect of light refraction and light reflection, while a matte surface can perform diffuse reflection of light.
  • the tufting artificial grass yarns may also have mixed bright and matte surfaces to obtain a more authentic feeling of the appearance of natural grass. These light effect surfaces may be provided on the straight artificial grass yarns or on the curly artificial grass yarns.
  • a matte surface may comprise chemical matte surface or physical matte surface according to its way of formation. Wherein, physical matte surface may be formed during the process of extruding artificial grass yarns by an extruder die.
  • a small pattern can be provided on the extruder die, such that physical matte surface can be formed during the extrusion process.
  • a plurality of thin vertical stripes are provided on the inner surface of the extruder die, such that correspondingly a plurality of thin vertical stripes are formed on the surface of the artificial grass yarns.
  • Such physical matte surface with a plurality of thin vertical stripes can simulate the vein of natural grass in a more realistic way.
  • physical matte surface can reduce use of chemical matte agent compared with chemical matte surface only, thus protecting the environment and the users' health.
  • the cross sections of the artificial grass yarns of the artificial turf of the present invention may also have different shapes in another embodiment.
  • the cross sections of the straight artificial grass yarns 2 having a plurality of different shapes (such as an S shape, a diamond shape, a rectangular shape and a W shape shown in FIGS. 2A , 3A and 4A ), and the cross sections of the curly artificial grass yarns 3 having at least one shape (for example, a rectangular shape as shown in FIGS. 2A , 3A and 4A ).
  • the cross sections of the straight artificial grass yarns 2 having at least two shapes.
  • the cross sections of the straight artificial grass yarns 2 having at least two of the following shapes: a rectangular shape, a triangular shape, a diamond shape, a dual-diamond shape (1), an olivary shape (j), a wavy shape (h), a ribbed shape (i), a tri-ribbed shape (k), a trefoil shape (m), a hollow shape (n), a C shape (a), a D shape (b), an X shape, an S shape (d), a W shape (g), a V shape (f), a U shape (e) and an M shape (c).
  • the cross sections of the curly artificial grass yarns 3 having at least one of the following shapes: a rectangular shape, a diamond shape and a ribbed shape (i).
  • the C shape (a) shows a sectional shape which has a C-shaped outer contour and which can be provided with a vertical rib outside
  • the D shape (b) shows a sectional shape which has a D-shaped outer contour and a relatively rounded and smooth outside
  • the M shape (c) shows a sectional shape which has an M-shaped outer contour and relatively sharp edges
  • the S shape (d) shows a sectional shape which has an S-shaped outer contour and which is relatively thin and smooth on the whole
  • the U shape (e) shows a sectional shape which has a U-shaped outer contour and which can be provided with a vertical rib inside
  • the V shape (f) shows a sectional shape which has a V-shaped outer contour and which can be provided with a vertical rib outside
  • the W shape (g) and the wavy shape (h) respectively show a sectional shape which has an outer contour having multiple curves and which is relatively thin and smooth on the whole
  • the ribbed shape (i) shows a sectional shape whose
  • Artificial grass yarns with different sectional shapes can realize different functions on the whole (such as softness, supporting performance, abrasion resistance, etc.), thus meeting different functional requirements.
  • Straight artificial grass yarns having a sectional shape whose outer contour is relatively rounded and thin or whose outer contour has no rib (such as, a rectangular shape, a triangular shape, a diamond shape, a wavy shape, a D shape, an S shape, a W shape, etc.) are generally softer with good handfeel and correspondingly have unremarkable supporting capacity and abrasion resistance in the overall performance.
  • Straight artificial grass yarns having a sectional shape whose outer contour is relatively sharp or thick or whose outer contour has a rib are relatively tough and correspondingly have better supporting capacity and abrasion resistance in the overall performance, which are suitable for regular or more frequent tread.
  • the thicknesses of the straight artificial grass yarns 2 may be same or different, and a filament dtex thereof ranging from 200 dtex to 3000 dtex.
  • the thicknesses of the curly artificial grass yarns 3 may be same or different, and a filament dtex thereof ranging from 200 dtex to 2000 dtex.
  • the same thickness herein refers to that tufting straight artificial grass yarns 2 (or curly artificial grass yarns 3) are in the same filament dtex, and different thicknesses mean that at least partial artificial grass yarns of the tufting straight artificial grass yarns 2 (or curly artificial grass yarns 3) are in different filament dtexs.
  • the range of the pile height of the straight artificial grass yarns (2) may be chosen as 8-80 mm. Explanation is made below with several examples of different combinations of artificial grass yarns adopted in the artificial turf.
  • a combination of a diamond shape (bright surface), a wide rectangular shape (bright surface) and a triangular shape (bright surface) is adopted for the straight artificial grass yarns, and the filament dtex ranges from 500 dtex to 2000 dtex.
  • a rectangular shape (bright surface) and a rectangular shape (bright surface) are adopted for the curly artificial grass yarns, and the filament dtex ranges from 400 dtex to 600 dtex.
  • the tufting density range is chosen to be 10000-150000 stitches
  • the grass pile height range is 20-30mm. Emerald green, dark green, yellow green and thatch color are combined together. Such combination enables the overall color to be close to natural grass.
  • the filament dtex is within a wide range, thick ones are combined with thin ones with a proper density, thus, the finished artificial turf feels soft and is suitable to be used in kindergartens and landscape areas.
  • a relatively long wavy shape (matte surface), a relatively short wavy shape (matte surface), and a D shape (matte surface) are adopted for the straight artificial grass yarns, and the filament dtex ranges from 800 dtex to 2000 dtex.
  • a rectangular shape (matte surface) is adopted for the curly artificial grass yarns, and the filament dtex ranges from 400 dtex to 800 dtex.
  • the tufting density range is chosen to be 16000-20000 stitches, the grass pile height range is 30-40mm. Emerald green, light green, dark green, beige and light brown are combined together. Such combination enables the artificial turf to have better supporting performance, thus it is suitable to be used in a courtyard area which is regularly treaded.
  • a ribbed shape (bright surface), an S shape (bright surface), a diamond shape (matte surface) and an olivary shape (bright surface) are adopted for the straight artificial grass yarns, and the filament dtex ranges from 1000 dtex to 2000 dtex.
  • a ribbed shape (bright surface) is adopted for the curly artificial grass yarns, and the filament dtex ranges from 400 dtex to 800 dtex.
  • the tufting density range is chosen to be 17000-25000 stitches, the grass pile height range is 30-50mm. Emerald green, dark green, yellow green, thatch color and beige are combined together. Such combination enables the finished artificial turf to have good supporting performance and good abrasion-resistant effect, thus it is suitable to be used in entertainment places and frequently treaded areas.
  • a C shape (matte surface), a dual-diamond shape (bright surface), a diamond shape (matte surface) and an olivary shape (bright surface) are adopted for the straight artificial grass yarns, and the filament dtex ranges from 500 dtex to 2000 dtex.
  • a rectangular shape (matte surface) is adopted for the curly artificial grass yarns, and the filament dtex ranges from 400 dtex to 600 dtex.
  • the tufting density range is chosen to be 10000-15000 stitches, the grass pile height range is 50-60mm. Light green, dark green, yellow green, thatch color and beige are combined together. Such combination enables the finished artificial turf to reflect the natural growth cycle of natural grass from sprouting to withering.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Road Paving Structures (AREA)
EP17193385.6A 2017-06-30 2017-09-27 Artificial turf for simulating natural grass Active EP3421665B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710524944.2A CN107190617A (zh) 2017-06-30 2017-06-30 仿天然草的人造草坪

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EP3421665A1 EP3421665A1 (en) 2019-01-02
EP3421665B1 true EP3421665B1 (en) 2019-11-27

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US (1) US20190003132A1 (zh)
EP (1) EP3421665B1 (zh)
CN (1) CN107190617A (zh)
AU (1) AU2017235988A1 (zh)
ES (1) ES2770363T3 (zh)

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JP7073660B2 (ja) * 2017-09-26 2022-05-24 住友ゴム工業株式会社 人工芝
CN108570903A (zh) * 2018-03-31 2018-09-25 江苏路求科技服务有限公司 一种橄榄球场地专用人造草坪
CN109023584A (zh) * 2018-07-02 2018-12-18 青岛青禾人造草坪股份有限公司 一种人造草坪及其制备方法
FI128620B (en) * 2018-08-06 2020-08-31 Saltex Oy Artificial grass
USD945310S1 (en) 2019-12-20 2022-03-08 Go Green Synthetic Lawn Solutions, Llc Turf fiber
USD962817S1 (en) 2019-12-20 2022-09-06 Go Green Synthetic Lawn Solutions, Llc Turf fiber
US11965293B2 (en) * 2020-01-29 2024-04-23 Playcore Wisconsin , Inc. Impact attenuating pathway and methods of making/use
CN114381984A (zh) * 2020-10-21 2022-04-22 青岛青禾人造草坪股份有限公司 一种人造草坪
CN114381985A (zh) * 2020-10-21 2022-04-22 青岛青禾人造草坪股份有限公司 一种人造草坪
US20230115841A1 (en) * 2021-10-08 2023-04-13 Shaw Industries Group, Inc. Fabrics, Surface Coverings Comprising Same, And Systems And Methods For Producing Same

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CN105064170B (zh) 2015-08-12 2017-06-27 江苏联创人造草坪股份有限公司 一种七色休闲人造草坪及其加工方法
EP3469142A1 (en) 2016-06-10 2019-04-17 Beaulieu International Group NV Artificial turf

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EP3421665A1 (en) 2019-01-02
US20190003132A1 (en) 2019-01-03
ES2770363T3 (es) 2020-07-01
CN107190617A (zh) 2017-09-22
AU2017235988A1 (en) 2019-01-17

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