Filling-free artifical turf

Abstract

The present application discloses a filling-free artificial turf, including a base cloth layer (2), an adhesive layer (3) and a grass fiber layer. The adhesive layer (3) is positioned at a bottom of the base cloth layer (2), the grass fiber layer is tufted on a top of the base cloth layer; and the grass fiber layer includes two types of curved artificial turf fibers (12, 13) and at least one type of straight artificial turf fiber (11).

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of artificial turfs, and more particularly to a filling-free artificial turf.BACKGROUND ART

[0002] In recent years, with the improvement of people's living standards, the use of artificial turf has also become more and more extensive. The artificial turf may be used in sports projects, such as football fields, tennis courts, golf courses, and the like, as well as in environment and landscaping, such as airports, apartment greening, public buildings, commercial areas and entertainment venues.

[0003] In order to increase the elasticity of artificial turf to make the artificial turf closer to a good natural turf, a surface layer of the artificial turf needs to be filled with quartz sand and elastic rubber granules in the construction process of traditional artificial sports turf. With the enhancement of people's awareness of environmental protection, the European Commission has approved a proposal of "Ban on Sale of Microplastic Fillers for Artificial Grass Systems". Once the ban comes into effect, rubber granules cannot be added to the artificial turf, so the research and development of a filling-free artificial turf has become a research and development hot spot in recent years.

[0004] CN215405410U discloses a filling-free artificial turf, and the filling-free artificial turf is prepared by means of tufting or weaving, with a straight yarn pound weight of 9,000D-13,000D, a curly yarn pound weight of 4,000D-5,500D, a row spacing of grass clusters of 0.5-1.2 cm, a height of the grass clusters of 20-40 mm and a density of the grass clusters of 18,000-28,000 clusters / m 2< . Because of the low curly yarn pound weight, during actual use, the artificial turf has poor elastic effect, and the curly yarns exhibit poor support for the straight yarns, resulting in that the straight yarns are easy to fall down, thereby the turf surface is slippery, and athletes are prone to fall. CN219195543U discloses a filling-free artificial turf, which is prepared by adopting wide-leaf curved monofilament fibers (having a pound weight of 8,000 Dtex-9,000 Dtex and a height of 12-25 mm) and thin-leaf curved fibers (having a pound weight of 5,000 Dtex-5,500 Dtex and a height of 5-12 mm) according to a row spacing of 0.7-1.0 cm and a density of 18,000-40,000 clusters / m 2< . Since this artificial turf is made of all curly fibers, a carpet surface of the turf is too flat, such that in actual use, the ball has too small rolling resistance and too large rolling distance, resulting in that athletes consume more energy and get tired prematurely when exercising in such venues.

[0005] Therefore, how to provide a real filling-free artificial turf is an urgent problem to be solved by those of ordinary skill in the art.SUMMARY

[0006] The present application aims to solve at least one of the foregoing technical problems in the prior art to a certain extent.

[0007] To this end, an objective of the present application is to provide a filling-free artificial turf.

[0008] In order to achieve the foregoing objective, the present application adopts the following technical solutions.

[0009] The filling-free artificial turf includes a base cloth layer, an adhesive layer and a grass fiber layer, where the adhesive layer is positioned at a bottom of the base cloth layer, and the grass fiber layer is tufted on a top of the base cloth layer; and the grass fiber layer includes two types of curved artificial turf fibers and at least one type of straight artificial turf fiber.

[0010] Preferably, a pound weight of the straight artificial turf fiber is 5,500-15,000 DTEX, pound weights of the curved artificial turf fibers are each 5,500-10,000 DTEX, and a tuft row spacing of each row of grass fibers in the grass fiber layer is less than 0.8 cm.

[0011] Preferably, the straight artificial turf fiber includes a net artificial turf fiber and / or a monofilament artificial turf fiber, and the curved artificial turf fibers each include a net curved artificial turf fiber and / or a monofilament curved artificial turf fiber.

[0012] Preferably, the two types of curved artificial turf fibers include a first curved artificial turf fiber and a second curved artificial turf fiber; and a height of the straight artificial turf fiber is 20-50 mm, where the first curved artificial turf fiber has a height 1 / 3-2 / 3 of the height of the straight artificial turf fiber, and the second curved artificial turf fiber has a height 1 / 2-4 / 5 of the height of the straight artificial turf fiber.

[0013] More preferably, the height of the straight artificial turf fiber is 28-40 mm.

[0014] Preferably, the first curved artificial turf fiber and the second curved artificial turf fiber are both monofilament curved artificial turf fibers, the first curved artificial turf fiber consists of 6-16 strands, and the second curved artificial turf fiber consists of 4-8 strands.

[0015] Preferably, the first curved artificial turf fiber has the same or different height as the straight artificial turf fiber after being straightened.

[0016] Preferably, the grass fiber layer is tufted on the top of the base cloth layer in a way of mixed tufting in the same cluster or mixed tufting row by row.

[0017] Preferably, the grass fiber layer is tufted on the top of the base cloth layer by mixed tufting row by row, in accordance with a sequence of a row of the straight artificial turf fiber, the first curved artificial turf fiber and the second curved artificial turf fiber and then a row of the first curved artificial turf fiber; or, the grass fiber layer is tufted on the top of the base cloth layer by mixed tufting row by row, in accordance with a sequence of a row of the straight artificial turf fiber and the second curved artificial turf fiber and then a row of the first curved artificial turf fiber.

[0018] Preferably, the straight artificial turf fiber, the first curved artificial turf fiber and the second curved artificial turf fiber are tufted on the top of the base cloth layer by mixed tufting in the same cluster; or, the grass fiber layer is tufted on the top of the base cloth layer by mixed tufting row by row in accordance with a sequence of a row of the straight curved artificial turf fiber and the second curved artificial turf fiber and then a row of the first curved artificial turf fiber and the second curved artificial turf fiber.

[0019] Preferably, a cross-sectional shape of the grass fiber layer includes any one or a combination of more of rhombus, triangle, olive shape, S shape, V shape and the like.

[0020] Preferably, a weight of the grass fiber layer is greater than or equal to 2000 g / m 2< .

[0021] More preferably, the weight of the grass fiber layer is greater than or equal to 2400 g / m 2< .

[0022] Preferably, a weight of the base cloth layer is 100-360 g / m 2< .

[0023] More preferably, the weight of the base cloth layer is greater than 200 g / m 2< .

[0024] Preferably, the filling-free artificial turf further includes a glass fiber cloth layer, the glass fiber cloth layer is connected to the bottom of the base cloth layer, and the adhesive layer is arranged at a bottom of the glass fiber cloth layer.

[0025] Due to the high density and large weight of the turf fiber layer, the low-gram-weight base cloth layer cannot support the turf fiber layer, resulting in low backing strength and poor dimensional stability of the turf. Because of its extremely high strength and low shrinkage characteristics, the glass fiber cloth layer can adequately meet the problems of the backing strength and dimensional stability.

[0026] As can be seen from the technical solutions described foregoing, compared to the prior art, the beneficial effects of the present application are as follows. 1. For the filling-free artificial turf provided by the present application, the first curved artificial turf fiber layer has a height 1 / 3-2 / 3 of that of the entire filling-free turf, and thus is very thick, providing sufficient elasticity for the filling-free artificial turf and being able to replace traditional cushioning elastic pads in use. A variety of curved artificial turf fibers are intertwined with each other to jointly support the straight artificial turf, ensuring that the straight artificial turf fiber does not lodge in use. The straight artificial turf fiber and the second curved artificial turf fiber can cooperate to adjust the resistance required for ball rolling, ensuring that the athletes do not consume excess energy when exercising on the field and are avoided from feeling fatigue. 2. The filling-free artificial turf provided by the present application adopts a high-gram-weight base cloth, and includes a glass fiber layer with greater strength and extremely low thermal shrinkage performance, thus ensuring the dimensional stability of the filling-free artificial turf in use and avoiding occurrence of quality problems such as bulging and shrinkage. 3. The filling-free artificial turf provided by the present application adopts a high-gram-weight artificial turf fiber surface layer, completely does not need to be filled with quartz sand and rubber particles, and has the advantages of easy production and convenient paving. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly describe the technical solutions in the embodiments of the present application or in the prior art, the drawings required for describing the embodiments or the prior art are briefly described below. Obviously, the drawings in the following description are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings may also be obtained according to the provided drawings without creative effort. FIG. 1 is a first structural schematic diagram of the present application; FIG. 2 is a second structural schematic diagram of the present application; FIG. 3 is a third structural schematic diagram of the present application; and FIG. 4 is a fourth structural schematic diagram of the present application.

[0028] In the figures: 11-straight artificial turf fiber; 12-first curved artificial turf fiber; 13-second curved artificial turf fiber; 2-base cloth layer; 21-glass fiber cloth layer; and 3-adhesive layer.DETAILED DESCRIPTION OF EMBODIMENTS

[0029] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals from beginning to end indicate the same or similar elements or elements with the same or similar functions. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application and are not to be understood as limitations of the present application.

[0030] In the description of the present application, it is to be understood that orientations or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for the ease of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to has to be in a particular orientation, constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0031] In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying importance in relativity or implicitly indicating the number of indicated technical features. Thus, features defined as the "first", "second" and so on may explicitly or implicitly include one or more of these features. In the description of the present application, "a plurality of" means two or more, unless otherwise expressly specified and limited.

[0032] According to the present application, unless otherwise expressly specified and limited, the terms "mounted", "connected", "linked", "fixed" and so on are to be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integrated connection; may be a mechanical connection or an electrical connection; may be direct connection or indirect connection through an intermediate medium, or may be internal communication between two elements or the interaction relationship between two elements. For those of ordinary skill in the prior art, specific meanings of the foregoing terms in the present application may be understood according to specific conditions.

[0033] In the present application, unless otherwise expressly specified and limited, the first feature being "on" or "under" the second feature may include that the first feature is in direct contact with the second feature, or may include that the first feature and the second feature are not in direct contact, but contact through additional features between them. Moreover, the first feature being "on", "above", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the level height of the first feature is greater than that of the second feature. The first feature being "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the level height of the first feature is less than that of the second feature.Example 1

[0034] Referring to FIG. 1, the present example provides a filling-free artificial turf, including a base cloth layer 2, a glass fiber cloth layer 21, an adhesive layer 3 and a grass fiber layer. The glass fiber cloth layer 21 is connected to a bottom of the base cloth layer 2, and the adhesive layer 3 is coated at a bottom of the glass fiber cloth layer 21.

[0035] The grass fiber layer includes a straight artificial turf fiber 11, a first curved artificial turf fiber 12 and a second curved artificial turf fiber 13.

[0036] The grass fiber layer is tufted on the top of the base cloth layer 2 by tufting row by row, according to the sequence of a row of the straight artificial turf fiber 11, the first curved artificial turf fiber 12 and the second curved artificial turf fiber 13 in the same cluster (a row spacing of 3 / 8 inch, a needle distance of 25 needles / 10 cm) and then a row of the first curved artificial turf fiber 13 (a row spacing of 3 / 16 inch, a needle distance of 25 needles / 10 cm).

[0037] In the above, the straight artificial turf fiber 11 is a straight monofilament artificial turf fiber, having DTEX 8,000 / 4F, a cross-sectional shape of an S shape, a color of emerald green and lemon yellow bicolor, and a height of 30 mm.

[0038] The first curved artificial turf fiber 12 is a monofilament curved artificial turf fiber, having DTEX 8,000 / 12F, a cross-sectional shape of an olive shape and a color of lemon yellow and light yellow bicolor. The first curved artificial turf fiber 12 has a grass height of 15 mm when being straightened. After curving, the first curved artificial turf fiber 12 has a height 1 / 3 of that of the straight artificial turf fiber 11.

[0039] The second curved artificial turf fiber 13 is a monofilament curved artificial turf fiber, having DTEX 7,200 / 6F, a cross-sectional shape of rhombus and a color of emerald green. The second curved artificial turf fiber 13 has a height 1 / 2 of that of the straight artificial turf fiber 11.

[0040] A total weight of the base cloth layer 2 and the glass fiber cloth layer 21 is 300 g, and a weight of the glass fiber cloth layer 21 is 100 g.Example 2

[0041] Referring to FIG. 2, the present example provides a filling-free artificial turf, including a base cloth layer 2, a glass fiber cloth layer 21, an adhesive layer 3 and a grass fiber layer. The glass fiber cloth layer 21 is connected to a bottom of the base cloth layer 2, and the adhesive layer 3 is coated at a bottom of the glass fiber cloth layer 21.

[0042] The grass fiber layer includes a straight artificial turf fiber 11, a first curved artificial turf fiber 12 and a second curved artificial turf fiber 13.

[0043] The grass fiber layer is tufted on the top of the base cloth layer by tufting row by row according to a sequence of a row of the straight artificial turf fiber 11 and the second curved artificial turf fiber 13 in the same cluster and then a row of the first curved artificial turf fiber 12, with a row spacing of 3 / 16 inch and a needle distance of 25 needles / 10 cm.

[0044] In the above, the straight artificial turf fiber 11 is a straight monofilament artificial turf fiber, having DTEX 8,000 / 4F, a cross-sectional shape of an S shape, a color of emerald green and lemon yellow bicolor, and a height of 30 mm.

[0045] The first curved artificial turf fiber 12 is a monofilament curved artificial turf fiber, having DTEX 7,200 / 6F, a cross-sectional shape of rhombus and a color of emerald green. The first curved artificial turf fiber 12 has a height 1 / 2 of that of the straight artificial turf fiber 11.

[0046] The second curved artificial turf fiber 13 is a monofilament curved artificial turf fiber, having DTEX 7,200 / 6F, a cross-sectional shape of rhombus and a color of emerald green. The second curved artificial turf fiber 13 has a height 1 / 2 of that of the straight artificial turf fiber.

[0047] A total weight of the base cloth layer 2 and the glass fiber cloth layer 21 is 300 g, and a weight of the glass fiber cloth layer 21 is 100 g.Example 3

[0048] The present example provides a filling-free artificial turf, including a base cloth layer 2, a glass fiber cloth layer 21, an adhesive layer 3 and a grass fiber layer. The glass fiber cloth layer 21 is connected to a bottom of the base cloth layer 2, and the adhesive layer 3 is coated at a bottom of the glass fiber cloth layer 21.

[0049] The grass fiber layer includes a straight artificial turf fiber 11, a first curved artificial turf fiber 12 and a second curved artificial turf fiber 13.

[0050] The straight artificial turf fiber 11, the first curved artificial turf fiber 12 and the second curved artificial turf fiber 13 are clustered in the same cluster, and are jointly tufted on the top of the base cloth layer 2, with a row spacing of 5 / 16 inch and a needle distance of 18 needles / 10 cm.

[0051] In the above, the straight artificial turf fiber 11 is a straight net artificial turf fiber, having DTEX 5,500, a color of emerald green and a height of 28 mm.

[0052] The first curved artificial turf fiber 12 is a monofilament curved artificial turf fiber, having DTEX 8,800 / 6F, a cross-sectional shape of rhombus and a color of emerald green. The first curved artificial turf fiber 12 has a height 1 / 2 of that of the straight artificial turf fiber 11.

[0053] The second curved artificial turf fiber 13 is a monofilament curved artificial turf fiber, having DTEX 6,000 / 4F, a cross-sectional shape of rhombus and a color of emerald green. The second curved artificial turf fiber 13 has a height 2 / 3 of that of the straight artificial turf fiber 11.

[0054] A total weight of the base cloth layer 2 and the glass fiber cloth layer 21 is 200 g, and a weight of the glass fiber cloth layer 21 is 50 g.Example 4

[0055] The present example provides a filling-free artificial turf, including a base cloth layer 2, a glass fiber cloth layer 21, an adhesive layer 3 and a grass fiber layer. The glass fiber cloth layer 21 is connected to a bottom of the base cloth layer 2, and the adhesive layer 3 is coated at a bottom of the glass fiber cloth layer 21.

[0056] The grass fiber layer includes a straight artificial turf fiber 11, a first curved artificial turf fiber 12 and a second curved artificial turf fiber 13.

[0057] The straight artificial turf fiber 11, the first curved artificial turf fiber 12 and the second curved artificial turf fiber 13 are clustered in the same cluster, and are jointly tufted on the top of the base cloth layer 2, with a row spacing of 5 / 16 inch and a needle distance of 18 needles / 10 cm.

[0058] In the above, the straight artificial turf fiber 11 is a straight monofilament artificial turf fiber, having DTEX 8,000 / 4F, a cross-sectional shape of an olive shape, a color of emerald green and olive green bicolor, and a height of 40 mm.

[0059] The first curved artificial turf fiber 12 is a net curved artificial turf fiber, having DTEX 5,500, a cross-sectional shape of an olive shape and a color of emerald green. The first curved artificial turf fiber 12 has a height 2 / 3 of that of the straight artificial turf fiber 11.

[0060] The second curved artificial turf fiber 13 is a monofilament curved artificial turf fiber with low curvature, having DTEX 8,000 / 8F, a cross-sectional shape of an olive shape and a color of emerald green and lemon yellow bicolor. The second curved artificial turf fiber 13 has a height 3 / 4 of that of the straight artificial turf fiber 11.

[0061] A total weight of the base cloth layer 2 and the glass fiber cloth layer 21 is 360 g, and a weight of the glass fiber cloth layer 21 is 100 g.Example 5

[0062] Referring to FIG. 4, the present example provides a filling-free artificial turf, including a base cloth layer 2, a glass fiber cloth layer 21, an adhesive layer 3 and a grass fiber layer. The glass fiber cloth layer 21 is connected to a bottom of the base cloth layer 2, and the adhesive layer 3 is coated at a bottom of the glass fiber cloth layer 21.

[0063] The grass fiber layer is tufted on the top of the base cloth layer 2 by tufting row by row, according to a sequence of a row of the straight artificial turf fiber 11 and the second curved artificial turf fiber 13 in the same cluster and then a row of the first curved artificial turf fiber 12 and the second curved artificial turf fiber 13 in the same cluster, with a row spacing of 5 / 16 inch and a needle distance of 20 needles / 10 cm.

[0064] In the above, the straight artificial turf fiber 11 is a straight monofilament artificial turf fiber, having DTEX 15,000 / 7F, a cross-sectional shape of triangle and rhombus, a color of emerald green and lemon yellow bicolor, and a height of 32 mm.

[0065] The first curved artificial turf fiber 12 is a monofilament curved artificial turf fiber, having DTEX 7,200 / 8F, a cross-sectional shape of an olive shape and a color of field green and lemon yellow bicolor. The first curved artificial turf fiber 12 has a height 2 / 3 of that of the straight artificial turf fiber 11.

[0066] The second curved artificial turf fiber 13 is a monofilament curved artificial turf fiber with low curvature, having DTEX 8,000 / 4F, a cross-sectional shape of an olive shape and a color of emerald green and beige bicolor. The second curved artificial turf fiber 13 has a height 4 / 5 of that of the straight artificial turf fiber 11.

[0067] A total weight of the base cloth layer 2 and the glass fiber cloth layer 21 is 300 g, and a weight of the glass fiber cloth layer 21 is 100 g.Performance Testing

[0068] According to the test method in FIFA Handbook 2015, the performances of the turfs are tested. The results are as follows: Table 1: Summary of Sports Performance Test Results of Filling-Free TurfsTest projectTest methodFIFA Quality standardTest resultExample 1Example 2Example 3Example 4Example 5Vertical ball reboundFIFA 010.6-1.0 m0.77 m0.72 m0.80 m0.75 m0.74 mAngle ball reboundFIFA 0245-70%52%53%52%54%55%Ball rollingFIFA 174-10 m4.2 m5.8 m5.2 m6.3 m6.9 mShock absorptionFIFA 04A57-68%65%64%65%63%65%Vertical deformationFIFA 05A4-11 mm9.1 mm8.6 mm8.2 mm7.1 mm6.9 mmRotational resistanceFIFA 0627-48Nm43Nm40Nm42Nm41Nm38Nm

[0069] As can be seen from the above data, in the case where quartz sand and rubber particles are not filled, all the performances of the turfs meet the requirements of the FIFA standard, which can meet the needs of sports venues and is more energy-saving and environmentally friendly.

[0070] In the description of the specification, descriptions referring to the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" mean that specific features, structures, materials or features described in combination with this embodiment or example are included in at least one embodiment or example of the present application. In the present specification, schematic expressions of the foregoing terms are not necessarily aimed at the same embodiment or example. Moreover, the specific features, structures, materials or features described may be combined in any one or more embodiments or examples in an appropriate manner. In addition, those skilled in the art may join and combine different embodiments or examples described in the specification.

[0071] Although the foregoing examples of the present application have been shown and described, it is understandable that the above embodiments are exemplary and cannot be understood as restrictions on the present application. Those of ordinary skill in the art may change, modify, replace and vary the foregoing embodiments within the scope of the present application.

Claims

1. A filling-free artificial turf, comprising a base cloth layer (2), an adhesive layer (3) and a grass fiber layer, the adhesive layer (3) being positioned at a bottom of the base cloth layer (2), and the grass fiber layer being tufted on a top of the base cloth layer (2), characterized in that the grass fiber layer comprises two types of curved artificial turf fibers and at least one type of straight artificial turf fiber (11).

2. The filling-free artificial turf according to claim 1, wherein a pound weight of the straight artificial turf fiber (11) is 5,500-15,000 DTEX, a pound weight of each of the curved artificial turf fibers is 5,500-10,000 DTEX, and a tuft row spacing of each row of grass fibers in the grass fiber layer is less than 0.8 cm.

3. The filling-free artificial turf according to claim 1 or 2, wherein the straight artificial turf fiber (11) comprises a net artificial turf fiber and / or a monofilament artificial turf fiber; and the curved artificial turf fibers comprise a net curved artificial turf fiber and / or a monofilament curved artificial turf fiber.

4. The filling-free artificial turf according to any one of claims 1 to 3, wherein the two types of curved artificial turf fibers comprise a first curved artificial turf fiber (12) and a second curved artificial turf fiber (13); a height of the straight artificial turf fiber (11) is 20-50 mm, wherein the first curved artificial turf fiber (12) has a height 1 / 3-2 / 3 of the height of the straight artificial turf fiber (11), and the second curved artificial turf fiber (13) has a height 1 / 2-4 / 5 of the height of the straight artificial turf fiber (11); and the first curved artificial turf fiber (12) has same or different height as the straight artificial turf fiber (11) after being straightened.

5. The filling-free artificial turf according to claim 4, wherein the first curved artificial turf fiber (12) and the second curved artificial turf fiber (13) are both monofilament curved artificial turf fibers, the first curved artificial turf fiber (12) consists of 6-16 strands, and the second curved artificial turf fiber (13) consists of 4-8 strands.

6. The filling-free artificial turf according to any one of claims 1 to 5, wherein the grass fiber layer is tufted on the top of the base cloth layer (2) by mixed tufting in a same cluster or mixed tufting row by row.

7. The filling-free artificial turf according to claim 6, wherein the grass fiber layer is tufted on the top of the base cloth layer (2) by mixed tufting row by row, in accordance with a sequence of a row of the straight artificial turf fiber (11), the first curved artificial turf fiber (12) and the second curved artificial turf fiber (13) and then a row of the first curved artificial turf fiber (12); or, the grass fiber layer is tufted on the top of the base cloth layer (2) by mixed tufting row by row, in accordance with a sequence of a row of the straight artificial turf fiber (11) and the second curved artificial turf fiber (13) and then a row of the first curved artificial turf fiber (12).

8. The filling-free artificial turf according to claim 6, wherein the straight artificial turf fiber (11), the first curved artificial turf fiber (12) and the second curved artificial turf fiber (13) are tufted on the top of the base cloth layer (2) by mixed tufting in the same cluster; or, the grass fiber layer is tufted on the top of the base cloth layer (2) by mixed tufting row by row, is in accordance with a sequence of a row of the straight curved artificial turf fiber and the second curved artificial turf fiber (13) and then a row of the first curved artificial turf fiber (12) and the second curved artificial turf fiber (13).

9. The filling-free artificial turf according to any one of claims 1 to 8, wherein a cross-sectional shape of the grass fiber layer comprises any one or a combination of more of rhombus, triangle, olive shape, S shape, V shape and the like.

10. The filling-free artificial turf according to any one of claims 1 to 9, further comprising a glass fiber cloth layer (21), wherein the glass fiber cloth layer (21) is connected to the bottom of the base cloth layer (2), and the adhesive layer (3) is arranged at a bottom of the glass fiber cloth layer (21).

Images