Artificial turf system based on a structure of elastic mats of a net artificial turf and method of construction

Abstract

Artificial turf system based on netted artificial turf elastic pad structure and construction method, including foundation layer, which is specifically the foundation layer laid by cement concrete or asphalt concrete, a bottom coating adhesive layer, a netted artificial turf elastic pad layer and an artificial turf surface layer are arranged on the foundation layer in a structure order from bottom to top, the foundation layer, the bottom coating adhesive layer and the netted artificial turf elastic pad layer are bonded together by covering, stacking and bonding. The impact absorption reaches more than 60%, the safety in use is improved, the sports injury of the user can be effectively reduced, the use is not affected by the season, the use period of the site is long, the root of the grass silk is not easy to loosen, the grass silk is not easy to fall off, the materials used are all environment-friendly materials, can be 100% recycled and reused, the comprehensive cost performance is high, the chemical performance environmental protection requirement of the new national standard and the international football association on the artificial turf can be completely met, it is non-toxic, safe and durable.

Description

Technical Field

[0001] This invention relates to the field of on-site fabrication of turf and grass-mimicking surfaces, and more particularly to an artificial turf system based on a mesh-like artificial turf elastic mat structure and its corresponding construction method. Background Technology

[0002] Currently, artificial turf is a type of ground paving material suitable for both indoor and outdoor use, combining ground decoration and practical installation. Its applications are very wide, such as football fields, hockey fields, gateball courts, parks, fitness trails, and outdoor sports venues for children such as kindergartens and children's playgrounds. Artificial turf structures can be laid on asphalt or cement concrete bases. About 60% of artificial turf is laid with an additional layer of turf elastic mat to improve the overall system's impact absorption capacity. There are high-density curved grass artificial turf, high-density short grass artificial turf with a mix of straight and curved grass, and artificial turf with pure straight monofilament grass, etc.

[0003] However, existing artificial turf technologies typically employ methods such as direct bonding to the ground or laying traditional cushioning mats underneath. These processes have several drawbacks, as detailed below:

[0004] 1. Artificial turf is directly bonded to the ground, resulting in poor cushioning. After a period of use, the turf is easily flattened by foot traffic, the elasticity of the turf system is lost quickly, and its impact absorption performance deteriorates, leading to insufficient safety during sports activities. Furthermore, prolonged foot traffic causes the roots of the grass fibers to loosen, resulting in grass fibers falling off. Because the bond between the turf and the base surface is weak, delamination is very common. Generally, after 3-4 years of use, the seams are prone to cracking and damage, compromising durability. In addition, damaged turf and detached grass fibers can also pose health risks to athletes.

[0005] 2. Laying traditional lawn cushioning mats is problematic because most lawn cushioning mats are made of high-density foam materials, which are very easy to flatten and tear. After the lawn is laid, especially in lawn structures that require filling with quartz sand and rubber granules, the traditional lawn cushioning mats are easily flattened after being laid. Furthermore, lawn cushioning mats have low resilience and low strength. After 3 to 5 years of use, they are prone to shrinkage, deformation, or irregular cracking, which affects the adhesion between the turf. In addition, most of these high-density foam materials are made of recycled TPE, TPV, and other materials, which cannot be recycled and reused. When renovating the site, they can easily cause environmental pollution.

[0006] 3. Price and cost issues: If an artificial turf field is required to meet FIFA's one-star or two-star requirements, the entire system must have high requirements for shock absorption performance. This means that the cushioning pad must be high-density and high-quality, and the amount and quality of the elastic particles used as filling must also be relatively high, resulting in a high overall cost.

[0007] In addition to the problems mentioned above, existing artificial turf structures generally have low impact absorption values. If you exercise on such a surface with poor cushioning, low elasticity, and low impact absorption for a long time, it is easy to cause ankle and knee injuries, sprains and strains, and fractures when you accidentally bump into or fall. This is especially harmful to children and the elderly. Summary of the Invention

[0008] To address the aforementioned issues, this invention, through experimental comparison and calculation, redesigned a new protective ground structure and combined it with a matching construction method. It provides an artificial turf system and construction method based on a mesh artificial turf elastic mat structure. This invention can meet the requirements for impact absorption performance of the ground structure during various sports, effectively protecting athletes from injury during various activities, and extending the service life of the field, resulting in a higher overall cost-effectiveness.

[0009] The artificial turf system and construction method based on a mesh-like artificial turf elastic mat structure of the present invention are described in detail below:

[0010] An artificial turf system based on a mesh-like artificial turf elastic mat structure includes a base layer, characterized in that:

[0011] The base layer is specifically made of cement concrete or asphalt concrete. On the base layer, a primer adhesive layer, a mesh artificial turf elastic pad layer, and an artificial turf surface layer are arranged in a bottom-up structural sequence. The base layer, primer adhesive layer, and mesh artificial turf elastic pad layer are bonded together by overlapping and adhering.

[0012] The artificial turf system based on the elastic mat structure of mesh artificial turf according to the present invention is characterized in that the primer adhesive layer is specifically formed by scraping or rolling polyurethane adhesive onto the base layer to form a primer adhesive layer that is bonded to the base layer, and the thickness of the primer adhesive layer is 0.1mm to 0.3mm.

[0013] The artificial turf system based on the elastic mat structure of mesh artificial turf according to the present invention is characterized in that the specific method of scraping or rolling the primer adhesive layer onto the base layer is as follows: the primer adhesive layer is scraped or rolled into long strips every 1 to 2 meters on the base layer, the width of the coating is 5 cm to 30 cm, and the amount of adhesive used per square meter of primer adhesive layer is 0.05 to 0.3 kg.

[0014] The artificial turf system based on the mesh artificial turf elastic mat structure according to the present invention is characterized in that the mesh artificial turf elastic mat layer is made of thermoplastic polyurethane elastomer material (TPU) by 3D printing.

[0015] The artificial turf system based on the mesh artificial turf elastic mat structure according to the present invention is characterized in that the mesh artificial turf elastic mat layer is made by 3D printing from polyolefin elastomer material (POE) or a mixture of polyolefin elastomer material (POE) and thermoplastic polyurethane elastomer material (TPU).

[0016] After the elastic mat layer of the mesh artificial turf is 3D printed, the surface is then subjected to double-sided hot melting, extrusion, and cooling to finalize the product before it is rolled up and packaged.

[0017] The artificial turf system based on a mesh artificial turf elastic mat structure according to the present invention is characterized in that the 3D printer used for the mesh artificial turf elastic mat layer is a multi-nozzle printer, with each printing nozzle ejecting a printing filament to form a mesh structure artificial turf elastic mat layer. The temperature of the printing nozzle is 120-235°C, the bed temperature is 50-60°C, the printing speed is 20-60 mm / s, the diameter of each printing filament is 0.1-3 mm, and the porosity of the mesh artificial turf elastic mat layer is 10%-80%.

[0018] The elastic mat layer of the mesh artificial turf is preferably 1 mm in diameter and has a porosity of 45%.

[0019] The artificial turf system based on the elastic mat structure of the mesh artificial turf according to the present invention is characterized in that the specific dimensions of the elastic mat layer of the mesh artificial turf are 0.5 to 5 meters in width, 5 to 20 mm in thickness, and 10 to 80 m in length.

[0020] The preferred width of the elastic mat layer for mesh artificial turf is 2 meters, the thickness is 10 mm, and the length is determined according to the actual width of the site.

[0021] The artificial turf system based on the elastic mat structure of mesh artificial turf according to the present invention is characterized in that the artificial turf surface layer is specifically a straight and curved mixed woven artificial turf, a monofilament straight grass artificial turf, or a high-density curved filament artificial turf, the height of the artificial turf surface layer is 10mm to 60mm, and the weaving density of the grass fibers is 8000 stitches / ㎡ to 63000 stitches / ㎡.

[0022] The higher the density of the artificial turf on the surface layer, the lower the density. The colors of the artificial turf on the surface layer are mainly red and green, but various colors can also be customized according to requirements, offering a rich variety. In specific applications, colorful numbers, text, and cartoon patterns can be woven in accordance with specific needs.

[0023] The construction method of an artificial turf system based on a mesh artificial turf elastic mat structure, and the specific steps of the artificial turf system based on the above-mentioned mesh artificial turf elastic mat structure are as follows:

[0024] 1) Preprocess the base layer:

[0025] In this step, pretreatment is performed based on two different types of base layers to form the area to be constructed as the base layer:

[0026] 1.1) Cement concrete:

[0027] The cement concrete base layer must be flat and free of sand. If there is any sand or looseness, it must be ground and repaired.

[0028] 1.2) Asphalt concrete:

[0029] The base layer of asphalt concrete must be hard, dry, load-bearing, free of loose particles, oil, grease, paint or other substances that hinder adhesion.

[0030] 2) Set the primer adhesive layer:

[0031] Before construction, use a blower to clean the base layer area treated in step 1) to ensure that the ground is dry and free of debris. Then, apply polyurethane adhesive by scraping or rolling it onto the base layer to form a primer adhesive layer that bonds with the base layer. The specific arrangement of this primer adhesive layer is as follows: every 1 to 2 meters, scrape or roll a strip of primer adhesive layer onto the base layer. The lower part of this primer adhesive layer is bonded to the base layer. The thickness of the primer adhesive layer is 0.1 mm to 0.3 mm, and the amount of adhesive used per square meter is 0.05 to 0.3 kg.

[0032] 3) Install a mesh artificial turf elastic underlayment:

[0033] Unroll the prefabricated roll of elastic mesh artificial turf and lay it flat on top of the primer adhesive layer. When laying, start from one side of the width of the construction area and continue to the other side. After laying and confirming the position, fix the joints between the rolled elastic mesh artificial turf layers with adhesive tape to reduce movement of the elastic mesh artificial turf layers and ensure that the elastic mesh artificial turf layers are firmly bonded to the top of the primer adhesive layer.

[0034] 4) Install the artificial turf surface layer:

[0035] Unfold the prefabricated roll of artificial turf and lay it on top of the mesh artificial turf elastic pad. The seams of each roll of artificial turf are staggered by 0.5 to 2 meters from the seams of the mesh artificial turf elastic pad in step 3). The seams between each roll of artificial turf are bonded together by brushing on adhesive to form a single piece of artificial turf covering the mesh artificial turf elastic pad.

[0036] It should be noted that no glue is used to bond the artificial turf surface layer to the mesh artificial turf elastic underlayment.

[0037] The construction method of the artificial turf system based on the elastic mat structure of mesh artificial turf according to the present invention is characterized in that, in step 3), the construction area can be laid by continuously unfolding and laying multiple rolls of elastic mat of mesh artificial turf in the width direction.

[0038] The specific conditions of the construction area must be considered. When the width of the construction area is relatively long, multiple rolls of mesh artificial turf elastic mats can be continuously laid out.

[0039] The artificial turf system and construction method based on the mesh artificial turf elastic mat structure of the present invention have achieved the following beneficial effects:

[0040] 1. The artificial turf system and construction method based on the elastic mat structure of the mesh artificial turf of the present invention have outstanding shock absorption and buffering characteristics in the design of the entire structure, with an impact absorption of more than 60%, which improves the safety of use and can effectively avoid accidental falls and collisions when users are active and playing on the field, and can also reduce the energy consumption of users when running.

[0041] 2. The artificial turf system and construction method based on the mesh artificial turf elastic mat structure of the present invention, since the material of the mesh artificial turf elastic mat is thermoplastic polyurethane elastomer (TPU), can be 100% recycled and reused, with low overall cost. Its performance is minimally affected by temperature changes. Its elasticity and cushioning performance are basically not lost in the range of -30℃ to 60℃. It can still maintain excellent shock absorption and cushioning performance in the cold season, ensuring that the use of the site is not affected by the season and extending the service life of the site.

[0042] 3. The artificial turf system and construction method based on the elastic mat structure of the mesh artificial turf of the present invention provide effective shock absorption and cushioning for the artificial turf with its excellent shock absorption performance. Even after 5 to 8 years of long-term trampling, the roots of the grass fibers are not easily loosened and the grass fibers are not easily lost. Moreover, all the materials used are environmentally friendly and can fully meet the new national standards and FIFA's full environmental protection requirements for the chemical properties of artificial turf, truly achieving non-toxicity, safety and excellent durability. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the artificial turf system and construction method based on the mesh artificial turf elastic mat structure of the present invention.

[0044] Figure 2This is a cross-sectional structural diagram of the mesh artificial turf elastic mat layer of the artificial turf system and construction method based on the mesh artificial turf elastic mat structure of the present invention.

[0045] Figure 3 This is a top view of the mesh artificial turf elastic mat layer of the artificial turf system and construction method based on the mesh artificial turf elastic mat structure of the present invention.

[0046] In the diagram: 1-base layer, 2-primer adhesive layer, 3-reinforced artificial turf elastic mat layer, 4-artificial turf surface layer. Detailed Implementation

[0047] The following description, in conjunction with the accompanying drawings and embodiments, further describes the technical means, creative features, objectives, and effects of the artificial turf system and construction method based on the mesh artificial turf elastic mat structure of the present invention.

[0048] like Figures 1-3 As shown, the artificial turf system based on the mesh artificial turf elastic pad structure includes a base layer 1, which is specifically a base layer made of cement concrete or asphalt concrete. On the base layer, a primer adhesive layer 2, a mesh artificial turf elastic pad layer 3, and an artificial turf surface layer 4 are arranged in a bottom-up structural sequence. The base layer, primer adhesive layer, and mesh artificial turf elastic pad layer are bonded together by overlapping and adhering.

[0049] The primer adhesive layer 2 is specifically formed by applying polyurethane adhesive to the base layer 1 by scraping or rolling, and the primer adhesive layer is bonded to the base layer. The thickness of the primer adhesive layer is 0.1mm to 0.3mm.

[0050] The specific method for applying the primer adhesive layer 2 to the base layer 1 by scraping or rolling is as follows: every 1 to 2 meters on the base layer, a long strip of primer adhesive layer is scraped or rolled, with a width of 5 cm to 30 cm, and the amount of adhesive used per square meter of primer adhesive layer is 0.05 to 0.3 kg.

[0051] The mesh artificial turf elastic mat layer 3 is made of thermoplastic polyurethane elastomer material through 3D printing.

[0052] The elastic mat layer 3 of the mesh artificial turf can also be made by 3D printing from polyolefin elastomer material or a mixture of polyolefin elastomer material and thermoplastic polyurethane elastomer material.

[0053] The 3D printer used for the mesh artificial turf elastic mat layer 3 is a multi-nozzle printer. Each printing nozzle ejects a printing filament to form a mesh structure of the artificial turf elastic mat layer. The temperature of the printing nozzle is 120-235℃, the bed temperature is 50-60℃, the printing speed is 20-60mm / s, the diameter of each printing filament is 0.1-3mm, and the porosity of the mesh artificial turf elastic mat layer is 10%-80%.

[0054] The specific dimensions of the elastic mat layer 3 of the mesh artificial turf are as follows: width is 0.5 to 5 meters, thickness is 5 to 20 mm, and length is 10 to 80 m.

[0055] The artificial turf surface layer 4 is specifically a straight-curved mixed woven artificial turf, a monofilament straight grass artificial turf, or a high-density curved filament artificial turf. The height of the artificial turf surface layer is 10mm to 60mm, and the weaving density of the grass fibers is 8000 stitches / ㎡ to 63000 stitches / ㎡.

[0056] The construction method of an artificial turf system based on a mesh artificial turf elastic mat structure, and the specific steps of the artificial turf system based on the above-mentioned mesh artificial turf elastic mat structure are as follows:

[0057] 1) Preprocess the base layer 1:

[0058] In this step, pretreatment is performed based on two different types of base layers to form the area to be constructed as the base layer:

[0059] 1.1) Cement concrete:

[0060] The cement concrete base layer must be flat and free of sand. If there is any sand or looseness, it must be ground and repaired.

[0061] 1.2) Asphalt concrete:

[0062] The base layer of asphalt concrete must be hard, dry, load-bearing, free of loose particles, oil, grease, paint or other substances that hinder adhesion.

[0063] 2) Set the primer adhesive layer 2:

[0064] Before construction, use a blower to clean the base layer area treated in step 1) to ensure that the ground is dry and free of debris. Then, apply polyurethane adhesive by scraping or rolling it onto the base layer to form a primer adhesive layer that bonds with the base layer. The specific arrangement of this primer adhesive layer is as follows: every 1 to 2 meters, scrape or roll a strip of primer adhesive layer onto the base layer. The lower part of this primer adhesive layer is bonded to the base layer. The thickness of the primer adhesive layer is 0.1 mm to 0.3 mm, and the amount of adhesive used per square meter is 0.05 to 0.3 kg.

[0065] 3) Install a mesh artificial turf elastic underlayment 3:

[0066] Unroll the prefabricated roll of elastic mesh artificial turf and lay it flat on top of the primer adhesive layer. When laying, start from one side of the width of the construction area and continue to the other side. After laying and confirming the position, fix the joints between the rolled elastic mesh artificial turf layers with adhesive tape to reduce movement of the elastic mesh artificial turf layers and ensure that the elastic mesh artificial turf layers are firmly bonded to the top of the primer adhesive layer.

[0067] 4) Set up artificial turf surface layer 4:

[0068] Unfold the prefabricated roll of artificial turf and lay it on top of the mesh artificial turf elastic pad. The seams of each roll of artificial turf are staggered by 0.5 to 2 meters from the seams of the mesh artificial turf elastic pad in step 3). The seams between each roll of artificial turf are bonded together by brushing on adhesive to form a single piece of artificial turf covering the mesh artificial turf elastic pad.

[0069] In step 3), the construction area can be laid by continuously unfolding and laying multiple rolls of elastic artificial turf in the width direction.

[0070] Example 1 - A 60mm thick mesh artificial turf elastic mat structure system and its construction method are as follows:

[0071] 1) Set up the base layer:

[0072] The base layer selected in this embodiment 1 is a cement concrete base. It needs to be flat and free of sand. If there is sand or looseness, it needs to be ground and repaired. Before construction, the base layer area to be constructed should be cleaned with a blower to ensure that the ground is dry and free of debris.

[0073] 2) Set the primer adhesive layer:

[0074] In this embodiment 1, the primer adhesive layer is formed by roller coating with a single component polyurethane adhesive. Each primer adhesive layer is spaced 1 meter apart and is rolled along the transverse direction of the mesh artificial turf elastic mat. The width is 20 cm and the amount used per square meter is about 0.05 kg.

[0075] 3) Install a mesh artificial turf elastic underlayment:

[0076] Unroll the prefabricated roll-shaped elastic artificial turf layer in sequence and lay it on the freshly applied primer adhesive. After determining the position, minimize movement and fix the gaps between the rolls with 10cm wide adhesive tape.

[0077] The elastic mat layer of the mesh artificial turf used in this embodiment 1 has a thickness of 10mm, a width of 2m, and a length of 75m;

[0078] 4) Install the artificial turf surface layer:

[0079] Unroll the prefabricated artificial turf into rolls and lay it on top of the mesh artificial turf elastic mat. The seams of each roll are staggered by 1 meter from the seams of the mesh artificial turf elastic mat. Each roll of artificial turf is then bonded together with adhesive by brushing adhesive onto the seam fabric to form a whole artificial turf, which covers the mesh artificial turf elastic mat. No adhesive is used to bond the artificial turf surface layer to the mesh artificial turf elastic mat.

[0080] The artificial turf used in the artificial turf surface layer 4 of this embodiment is a 50mm high pure monofilament artificial turf with a density of 10,500 needles / square meter. After it is laid on the elastic mat layer of mesh artificial turf, it needs to be filled with quartz sand and rubber granules. After filling, the grass fibers need to be combed up to prevent the grass fibers from being pressed down.

[0081] In the artificial turf surface layer 4 of this embodiment 1, 30 kg of 0.5-2 mm quartz sand and 6 kg of 1-3 mm red rubber granules are used per square meter.

[0082] The beneficial effects of the 60mm mesh artificial turf elastic mat structure system and construction method in Example 1 are as follows:

[0083] Table 1

[0084]

[0085] Table 1: Comparison of the impact absorption and vertical deformation values ​​of this Example 1 with ordinary artificial turf in the prior art and the artificial turf products required by the new national standard GB 36246-2018.

[0086] As can be seen from the comparison in Table 1 above, the impact absorption performance of this embodiment 1 is significantly better than that of ordinary artificial turf systems. This embodiment 1 is suitable for football fields in large, medium and small schools and various football fields.

[0087] Example 2: A 35mm thick mesh artificial turf elastic mat structure system and construction method are as follows:

[0088] 1) Set up the base layer:

[0089] The base layer selected in this embodiment 2 is a cement concrete base. It needs to be flat and free of sand. If there is sand or looseness, it needs to be ground and repaired. Before constructing the mesh artificial turf elastic mat, the base layer area to be constructed should be cleaned with a blower to ensure that the ground is dry and free of debris.

[0090] 2) Set the primer adhesive layer:

[0091] In this embodiment 2, the primer adhesive layer is formed by roller coating with a single component polyurethane adhesive. Every 1 meter, a layer of adhesive is rolled along the transverse direction of the mesh artificial turf elastic mat, with a width of 20 cm and a usage of about 0.05 kg per square meter.

[0092] 3) Install a mesh artificial turf elastic underlayment:

[0093] Unroll the prefabricated roll-shaped elastic artificial turf layer in sequence and lay it on the freshly applied primer adhesive. After determining the position, minimize movement and fix the gaps between the rolls with 10cm wide adhesive tape.

[0094] The elastic mat layer of the mesh artificial turf used in this embodiment 2 has a thickness of 10mm, a width of 2m, and a length of 40m.

[0095] 4) Install the artificial turf surface layer:

[0096] Unroll the prefabricated artificial turf into rolls and lay it on top of the mesh artificial turf elastic mat. The seams of each roll are staggered by 1 meter from the seams of the mesh artificial turf elastic mat. Each roll of artificial turf is then bonded together with adhesive by brushing adhesive onto the seam fabric to form a whole artificial turf, which covers the mesh artificial turf elastic mat. No adhesive is used to bond the artificial turf surface layer to the mesh artificial turf elastic mat.

[0097] The artificial turf used in the artificial turf surface layer 4 of this embodiment 2 is a 25mm high high-density straight-curved mixed woven artificial turf with a density of 26,000 stitches / square meter. It can be laid out after all the turf is laid, without the need to fill it with quartz sand and rubber granules.

[0098] The beneficial effects of the 35mm mesh artificial turf elastic mat structure system and construction method in Example 2 are shown in Table 2 below:

[0099]

[0100] Table 2: Comparison of impact absorption and vertical deformation values ​​of this Example 2 with ordinary artificial turf system products and the finished artificial turf system required by the new national standard GB 36246-2018.

[0101] As can be seen from the comparison in Table 2 above, the impact absorption performance of this embodiment 2 is significantly better than that of ordinary artificial turf systems. This embodiment 2 is suitable for kindergartens, children's playgrounds, primary and secondary school football fields, parks, scenic walkways, and other places.

[0102] Example 3: A 30mm thick mesh artificial turf elastic mat structure system and construction method are as follows:

[0103] 1) Set up the base layer:

[0104] The base layer selected in this embodiment 3 is an asphalt concrete base. The base layer must be hard, dry, flat, load-bearing, free of loose particles, oil, grease, paint or other substances that may hinder adhesion. Before constructing the mesh artificial turf elastic mat, the base layer area to be constructed must be cleaned with a blower to ensure that the ground is dry and free of debris.

[0105] 2) Set the primer adhesive layer:

[0106] In this embodiment 3, the primer adhesive layer is formed by roller coating with two-component polyurethane adhesive. Every 1 meter, a layer of adhesive is rolled along the transverse direction of the mesh artificial turf elastic mat, with a width of 20cm and a usage of about 0.2 kg per square meter.

[0107] 3) Install a mesh artificial turf elastic underlayment:

[0108] Unroll the prefabricated roll-shaped elastic artificial turf layer in sequence and lay it on the freshly applied primer adhesive. After determining the position, minimize movement and fix the gaps between the rolls with 10cm wide adhesive tape.

[0109] The elastic mat layer of the mesh artificial turf used in this embodiment 3 has a thickness of 10mm, a width of 4m, and a length of 30m.

[0110] 4) Install the artificial turf surface layer:

[0111] Unroll the prefabricated artificial turf into rolls and lay it on top of the mesh artificial turf elastic mat. The seams of each roll are staggered by 2 meters from the seams of the mesh artificial turf elastic mat. Each roll of artificial turf is then bonded together with adhesive by brushing adhesive onto the seam fabric to form a whole artificial turf, which covers the mesh artificial turf elastic mat. No adhesive is used to bond the artificial turf surface layer to the mesh artificial turf elastic mat.

[0112] The artificial turf used in the artificial turf surface layer of this embodiment 3 is a 20mm high artificial turf specifically for hockey, with a density of 42,000 stitches / square meter. After it is laid entirely on the elastic mat layer of the mesh artificial turf, it needs to be filled with quartz sand. After filling, the grass fibers need to be combed up to prevent them from being pressed down.

[0113] In the artificial turf surface layer 4 of this embodiment 3, 10 kg / m² of fine quartz sand with a thickness of 0.1-0.5 mm is used.

[0114] The beneficial effects of the 30mm mesh artificial turf elastic mat structure system and construction method in Example 3 are shown in Table 3 below:

[0115]

[0116] Table 3: Comparison of impact absorption and vertical deformation values ​​of this Example 3 with ordinary artificial turf system products and the finished artificial turf system required by the new national standard GB 36246-2018.

[0117] As can be seen from the comparison in Table 3 above, the impact absorption performance of this embodiment 3 is significantly better than that of ordinary artificial turf systems. This embodiment 3 is suitable for hockey fields.

[0118] Example 4: A 20mm thick mesh artificial turf elastic mat structure system and construction method are as follows:

[0119] 1) Set up the base layer:

[0120] The base layer selected in this embodiment 4 is an asphalt concrete base. The base layer must be hard, dry, flat, load-bearing, free of loose particles, oil, grease, paint or other substances that may hinder adhesion. Before constructing the mesh artificial turf elastic mat, the base layer area to be constructed must be cleaned with a blower to ensure that the ground is dry and free of debris.

[0121] 2) Set the primer adhesive layer:

[0122] In this embodiment 4, the primer adhesive layer is formed by roller coating with two-component polyurethane adhesive. Every 0.5 meters, one layer of adhesive is rolled along the transverse direction of the mesh artificial turf elastic mat, with a width of 20cm, and the amount used per square meter is about 0.2 kg.

[0123] 3) Install a mesh artificial turf elastic underlayment:

[0124] Unroll the prefabricated roll-shaped elastic artificial turf layer in sequence and lay it on the freshly applied primer adhesive. After determining the position, minimize movement and fix the gaps between the rolls with 10cm wide adhesive tape.

[0125] The elastic mat layer of the mesh artificial turf used in Example 4 has a thickness of 10mm, a width of 4m, and a length of 20m / roll.

[0126] 4) Install the artificial turf surface layer:

[0127] Unroll the prefabricated artificial turf into rolls and lay it on top of the mesh artificial turf elastic mat. The seams of each roll are staggered by 2 meters from the seams of the mesh artificial turf elastic mat. Each roll of artificial turf is then bonded together with adhesive by brushing adhesive onto the seam fabric to form a whole artificial turf, which covers the mesh artificial turf elastic mat. No adhesive is used to bond the artificial turf surface layer to the mesh artificial turf elastic mat.

[0128] The artificial turf used in the artificial turf surface layer 4 of this embodiment is a 10mm high pure curved silk gateball court special artificial turf with a density of 63,000 stitches / square meter. It can be laid out after all the turf is laid, without the need to fill it with quartz sand and rubber granules.

[0129] The beneficial effects of the 20mm mesh artificial turf elastic mat structure system and construction method in Example 4 are shown in Table 4 below:

[0130]

[0131] Table 4: Comparison of impact absorption and vertical deformation values ​​of this Example 4 with ordinary artificial turf system products and the finished artificial turf system required by the new national standard GB 36246-2018.

[0132] As can be seen from the comparison in Table 4 above, the impact absorption performance of this embodiment 4 is significantly better than that of ordinary artificial turf systems. This embodiment 4 is suitable for gateball court sports fields.

[0133] Based on the above four embodiments, the artificial turf system and construction method based on the mesh artificial turf elastic pad structure of the present invention are suitable for various outdoor turf sports venues, with excellent shock absorption and cushioning performance, making sports safer.

[0134] This invention relates to an artificial turf system and construction method based on a mesh artificial turf elastic mat structure. The entire structure features outstanding shock absorption and cushioning characteristics, absorbing over 60% of the impact, thus improving safety and effectively reducing sports injuries. This invention ensures the field's use is unaffected by seasons, extending its lifespan. Even after prolonged trampling, the grass fibers remain firmly rooted and do not easily shed. Furthermore, all materials used are environmentally friendly; the mesh artificial turf elastic mat layer is made of thermoplastic polyurethane (TPU), which is 100% recyclable. It offers high overall cost-effectiveness and fully meets the new national standards and FIFA's requirements for the chemical properties and environmental protection of artificial turf, truly achieving non-toxicity, safety, and excellent durability.

[0135] However, those skilled in the art should recognize that the above embodiments are only used to illustrate this application and are not intended to limit this application. Any changes or modifications to the above embodiments within the spirit and essence of this application will fall within the scope of the claims of this application.

Claims

1. An artificial turf system based on a mesh-like artificial turf elastic mat structure, comprising a base layer (1), characterized in that: The base layer (1) is specifically a base layer made of cement concrete or asphalt concrete. On the base layer, a base coating adhesive layer (2), a mesh artificial turf elastic pad layer (3) and an artificial turf surface layer (4) are arranged in a bottom-up structural sequence. The base layer, the base coating adhesive layer and the mesh artificial turf elastic pad layer are bonded together by overlapping and bonding. The aforementioned mesh artificial turf elastic mat layer (3) is made of thermoplastic polyurethane elastomer material, polyolefin elastomer material or a mixture thereof, and is made into an elastic mat layer with a mesh structure by 3D printing process, and the porosity of the mesh structure is 10% to 80%. The artificial turf surface layer (4) is covered on the mesh artificial turf elastic pad layer (3) in a non-adhesive manner; The primer adhesive layer (2) is disposed on the base layer (1) in a discontinuous strip manner, for bonding the mesh artificial turf elastic pad layer (3) to the base layer (1).

2. The artificial turf system based on a mesh artificial turf elastic mat structure as described in claim 1, characterized in that, The primer adhesive layer (2) is specifically formed by applying polyurethane adhesive to the base layer (1) by scraping or rolling, and the primer adhesive layer is bonded to the base layer. The thickness of the primer adhesive layer is 0.1mm to 0.3mm.

3. The artificial turf system based on a mesh artificial turf elastic mat structure as described in claim 2, characterized in that, The specific method of applying the primer adhesive layer (2) to the base layer (1) by scraping or rolling is as follows: the primer adhesive layer is applied in strips every 1 to 2 meters on the base layer, with a width of 5 cm to 30 cm and an adhesive amount of 0.05 to 0.3 kg per square meter.

4. The artificial turf system based on a mesh artificial turf elastic mat structure as described in claim 1, characterized in that, The 3D printer used for the mesh artificial turf elastic mat layer (3) is a multi-nozzle printer. Each printing nozzle ejects a printing filament to form a mesh structure artificial turf elastic mat layer. The temperature of the printing nozzle is 120-235℃, the bed temperature is 50-60℃, the printing speed is 20-60mm / s, and the diameter of each printing filament is 0.1-3mm.

5. The artificial turf system based on a mesh artificial turf elastic mat structure as described in claim 1, characterized in that, The specific dimensions of the elastic mat layer (3) of the mesh artificial turf are as follows: the width is 0.5 to 5 meters, the thickness is 5 to 20 mm, and the length is 10 to 80 m.

6. The artificial turf system based on a mesh artificial turf elastic mat structure as described in claim 1, characterized in that, The artificial turf surface layer (4) is specifically a straight and curved mixed woven artificial turf, a single filament straight grass artificial turf, or a high-density curved filament artificial turf. The height of the artificial turf surface layer is 10mm to 60mm, and the weaving density of the grass fibers is 8000 stitches / ㎡ to 63000 stitches / ㎡.

7. A construction method for an artificial turf system based on a mesh artificial turf elastic mat structure, wherein the specific steps of the artificial turf system based on a mesh artificial turf elastic mat structure as described in any one of claims 1 to 6 are as follows: 1) Preprocess the base layer (1): In this step, pretreatment is performed based on two different types of base layers to form the area to be constructed as the base layer: 1.1) Cement concrete: The cement concrete base layer must be flat and free of sand. If there is any sand or looseness, it must be ground and repaired. 1.2) Asphalt concrete: The base layer of asphalt concrete must be hard, dry, load-bearing, free of loose particles, oil, grease, paint or other substances that hinder adhesion. 2) Set the primer adhesive layer (2): Before construction, use a blower to clean the base layer area treated in step 1) to ensure that the ground is dry and free of debris. Then, apply polyurethane adhesive by scraping or rolling it onto the base layer to form a primer adhesive layer that bonds with the base layer. The specific arrangement of this primer adhesive layer is as follows: every 1 to 2 meters, scrape or roll a strip of primer adhesive layer onto the base layer. The lower part of this primer adhesive layer is bonded to the base layer. The thickness of the primer adhesive layer is 0.1 mm to 0.3 mm, and the amount of adhesive used per square meter is 0.05 to 0.3 kg. 3) Install a mesh artificial turf elastic underlayment (3): Unroll the prefabricated roll of elastic mesh artificial turf and lay it flat on top of the primer adhesive layer. When laying, start from one side of the width of the construction area and continue to the other side. After laying and confirming the position, fix the joints between the rolled elastic mesh artificial turf layers with adhesive tape to reduce movement of the elastic mesh artificial turf layers and ensure that the elastic mesh artificial turf layers are firmly bonded to the top of the primer adhesive layer. 4) Set up the artificial turf surface layer (4): Unfold the prefabricated roll of artificial turf and lay it on top of the mesh artificial turf elastic pad. The seams of each roll of artificial turf are staggered by 0.5 to 2 meters from the seams of the mesh artificial turf elastic pad (3) in step 3). The seams between each roll of artificial turf are bonded together by brushing on adhesive to form a whole piece of artificial turf covering the mesh artificial turf elastic pad.

8. The construction method of the artificial turf system based on the elastic mat structure of mesh artificial turf as described in claim 7, characterized in that, In step 3), the construction area is laid by continuously unfolding and laying multiple rolls of netted artificial turf elastic mat (3) in the width direction.

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