A woven artificial turf specifically designed for tennis courts

Abstract

This utility model relates to a woven artificial turf specifically for tennis courts, comprising a warp-knitted base layer and a grass fiber layer woven onto the warp-knitted base layer. The grass fiber layer includes several grass fibers, which are straight fibers and curved fibers, with the straightened height of the curved fibers being greater than that of the straight fibers. After the turf is formed, the straight fibers create a stable rebound trajectory as a bottom support net, while the curved fibers form a dense surface layer to increase ball rotation friction. This layered approach absorbs over 70% of the impact force, improving the turf's support and meeting the various requirements of tennis courts.

Description

Technical Field

[0001] This utility model belongs to the technical field of artificial turf for tennis courts, specifically relating to a woven artificial turf for tennis courts. Background Technology

[0002] Traditional tennis courts use tufted turf, which involves embedding grass fibers of the same height (straight fibers or a combination of straight and curved fibers) into the base fabric in a tufted manner. Then, adhesive is applied to the back of the base fabric to fix the grass fibers. However, after the adhesive is heat-set, the curved fibers shrink back to a lower height to form the bottom layer, while the straight fibers serve as the top layer. This results in insufficient support for the turf, making the ball's rolling trajectory uncontrollable and failing to meet the ITF (International Tennis Federation) requirements for ball speed, bounce height, and coefficient of friction. Utility Model Content

[0003] The purpose of this invention is to provide a woven artificial turf specifically for tennis courts to solve the problem of insufficient turf support.

[0004] The artificial turf for tennis courts with a woven structure of this utility model is implemented as follows:

[0005] A woven artificial turf for tennis courts includes a warp-knitted base layer and a grass fiber layer woven onto the warp-knitted base layer by warp knitting; the grass fiber layer includes a plurality of grass fibers, which include straight fibers and curved fibers, and the height of the curved fibers when they are not oriented and retracted is greater than the height of the straight fibers.

[0006] Furthermore, the height H1 of the straight wire is 5-8mm.

[0007] Furthermore, the height difference ΔH between the curved and straight wires is 3mm-6mm.

[0008] Furthermore, the coverage of the curved yarn on the warp-knitted base layer is C≥85%.

[0009] Furthermore, the density T of the straight filaments is ≥6500 clusters / m².

[0010] Furthermore, the filament has a spiral curled structure with a curl count Q ≥ 3 turns / cm.

[0011] Furthermore, the warp-knitted base fabric layer is provided with several water-permeable gaps.

[0012] Furthermore, the straight filaments are HMPE grass fibers, and the curved filaments are PP grass fibers.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0014] (1) This utility model uses warp knitting to form the base fabric layer and grass fiber layer in one step, without the need for backing adhesive treatment. This not only simplifies the processing technology and improves the firmness of the grass fiber, but also has excellent water permeability.

[0015] (2) This utility model uses curved wires with a height greater than that of straight wires. After the turf is formed, the straight wires can form a bottom support net to stabilize the rebound trajectory, and the curved wires can form a dense surface layer to increase the ball's rotation friction. In this layered manner, more than 70% of the impact force is absorbed, thereby improving the turf's support and meeting the various requirements of tennis courts for turf. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional schematic diagram of a preferred embodiment of the present invention: a fully permeable pet lawn mat based on warp knitting technology.

[0018] Figure 2 This is a cross-sectional schematic diagram of a fully permeable pet lawn mat based on warp knitting technology, according to a preferred embodiment of this utility model.

[0019] In the diagram: warp-knitted base fabric layer 1, grass fiber layer 2, grass fiber 3, straight fiber 31, and wavy fiber 32. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] like Figure 1-2 As shown, a woven artificial turf for tennis courts includes a warp-knitted base fabric layer 1 and a grass fiber layer 2 woven on the warp-knitted base fabric layer 1 by warp knitting. The grass fiber layer 2 includes a number of grass fibers 3, which include straight fibers 31 and curved fibers 32. The height of the curved fibers 32 when not oriented and retracted is greater than the height of the straight fibers 31.

[0023] By adjusting the relative distance between the two needle beds of the warp knitting machine, the implantation height of the straight yarn 31 and the curved yarn 32 is adjusted so that the initial height of the curved yarn 32 (i.e., the height before directional retraction) is greater than the height of the straight yarn 31. In other words, at this time, the curved yarn 32 is also a straight yarn, and its height is greater than the height of the straight yarn 31.

[0024] After warp knitting is completed, heat setting is carried out by heating in an oven at a temperature of 70°-90°. This causes the curved yarn 32 to shrink in a directional manner (shrinkage rate of 36%-60%) to form an inverted topological structure of a dense surface layer, while the straight yarn 31 remains stable (its shrinkage rate is <5%) to form the bottom support network.

[0025] Among them, the inverted topology is the multi-layered, directional curling formed by the curved filament 32 during the heating and shrinking process.

[0026] Among them, the height H1 of straight wire 31 is 5-8mm.

[0027] The height difference ΔH between the curved wire 32 and the straight wire 31 is 3mm-6mm. This height difference is the height of the curved wire 32 when it is not directionally retracted.

[0028] After the filament 32 is directionally retracted, it forms a dense surface layer. The coverage rate C of the filament 32 on the warp-knitted base fabric layer 1 is ≥85%, which can effectively disperse the impact force brought by the ball and increase friction.

[0029] To ensure the support capacity of the bottom mesh support layer formed by straight wire 31, the density T of straight wire 31 is ≥ 6500 clusters / ㎡.

[0030] The filament 32 has a spiral coiled structure with a coil number Q ≥ 3 turns / cm.

[0031] To ensure the water permeability of the artificial turf, several permeable gaps are provided on the warp-knitted base fabric layer 1.

[0032] In order to individually directionally shrink the curved filament 32 after weaving, and at the same time minimize the shrinkage rate of the straight filament 31, the straight filament 31 is HMPE (high modulus polyethylene) grass filament 3, and the curved filament 32 is PP (heat shrinkage modified polypropylene) grass filament 3.

[0033] This invention employs a combination of straight wires 31 and curved wires 32, with the straightened height of the curved wires 32 exceeding that of the straight wires 31. This results in the straight wire 31 layer forming the bottom support net, while the curved wires 32 form the dense surface layer, creating a three-layer design with double grass fibers that absorbs over 70% of the impact force. Specifically, the straight wire 31 layer provides a rigid base, enhancing vertical shock absorption, while the interlaced curved wire 32 layer simulates the friction of natural grass fibers, extending the ball's contact time and dispersing impact force to reduce wear, thus meeting the stringent dynamic performance requirements of tennis courts.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A woven artificial turf specifically for tennis courts, characterized in that, It includes a warp-knitted base fabric layer (1) and a grass fiber layer (2) woven on the warp-knitted base fabric layer (1) by warp knitting; the grass fiber layer (2) includes a number of grass fibers (3), the grass fibers (3) include straight fibers (31) and curved fibers (32), the height of the curved fibers (32) when not oriented and retracted is greater than the height of the straight fibers (31).

2. The artificial turf for tennis courts with a woven structure according to claim 1, characterized in that, The height H1 of the straight wire (31) is 5-8 mm.

3. The artificial turf for tennis courts with a woven structure according to claim 1, characterized in that, The height difference ΔH between the curved wire (32) and the straight wire (31) is 3mm-6mm.

4. The woven artificial turf for tennis courts according to claim 1, characterized in that, The coverage of the filament (32) on the warp-knitted base fabric layer (1) is C≥85%.

5. The woven artificial turf for tennis courts according to claim 1, characterized in that, The density T of the straight filament (31) is ≥6500 clusters / m².

6. The woven artificial turf for tennis courts according to claim 1, characterized in that, The filament (32) has a spiral coiled structure with a coil number Q ≥ 3 turns / cm.

7. The artificial turf for tennis courts with a woven structure according to claim 1, characterized in that, The warp-knitted base fabric layer (1) has several permeable gaps.

8. The woven artificial turf for tennis courts according to claim 1, characterized in that, The straight filament (31) is HMPE grass fiber, and the curved filament (32) is PP grass fiber.

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