Easy-to-install recyclable high-performance artificial turf

Abstract

The utility model discloses an easy paving recyclable high performance artificial turf belongs to artificial turf technical field, and artificial turf includes: artificial turf layer and hook face material layer, and the bottom of artificial turf layer is detachably bonded with hook face material layer, artificial turf layer includes a plurality of artificial turf piece splicing and is composed, and artificial turf piece includes from top to bottom in proper order: artificial turf silk, base cloth layer and bottom cloth layer, or, artificial turf silk, base cloth layer, back adhesive layer and bottom cloth layer, and back adhesive layer is bonded with the bottom of base cloth layer, the utility model discloses artificial turf easy paving, and the whole can realize recycling, and does not use PU etc. two component jointing glue in the paving process, and it has the function of buffering and shock attenuation, and can be exempted from filling in the use process.

Description

Technical Field

[0001] This utility model belongs to the field of artificial turf technology and relates to an easy-to-install, recyclable, high-performance artificial turf. Background Technology

[0002] With advancements in materials science and manufacturing processes, artificial turf has come close to natural grass in terms of color, appearance, and comfort. In some aspects, it even surpasses natural grass, particularly in evergreen turf, durability, anti-aging properties, water conservation, and ease of installation and maintenance. Since 2021, sports artificial turf and leisure turf have experienced rapid growth and are now ubiquitous. The demands on artificial turf are constantly increasing, requiring not only specific color and appearance but also pull-out strength, vibration absorption to meet FIFA requirements for vertical deformation, environmental friendliness and recyclability, high water permeability, and ease of installation. The demand for easy installation is particularly high recently. Easy-install turf allows for partial replacement of damaged sections, especially high-density, infill-free artificial turf. While more expensive, this allows for localized replacement of damaged sections, significantly improving the utilization efficiency of sports fields and reducing maintenance costs.

[0003] According to the published patent CN209975312U, an easy-to-install artificial turf uses raised edges and an uneven structure for assembly. However, this method results in high production costs and seams that are prone to separation. It is unsuitable for large-size production, and during transportation, it can only be laid flat and cannot be rolled up, further increasing costs.

[0004] Patent CN219010862U describes an easy-to-install artificial turf. It primarily consists of an upper buffer layer containing protrusions (first and second) and rubber granules. Multiple protrusions (first and second) are fixedly installed on the top side of the core layer, with rubber granules filling the gaps between them. This interlocking method of fixing with protrusions and concave surfaces results in poor stability for high-strength artificial turf, making it prone to detachment and displacement. Especially under gravity, it is susceptible to edge lifting and disengagement.

[0005] Therefore, how to develop a simple, universally applicable, easy-to-install, recyclable, high-performance artificial turf is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the present invention provides an easy-to-install, recyclable, high-performance artificial turf.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An easy-to-install, recyclable, high-performance artificial turf includes: an artificial turf layer and a hook surface material layer, wherein the bottom of the artificial turf layer is detachably bonded to the hook surface material layer;

[0009] The artificial turf layer comprises multiple artificial turf blocks spliced ​​together, and the artificial turf blocks, from top to bottom, include: artificial grass fibers, a base fabric layer, and a bottom fabric layer;

[0010] Alternatively, from top to bottom, it includes: artificial grass fibers, a base fabric layer, an adhesive backing layer, and a bottom fabric layer, wherein the adhesive backing layer is bonded to the bottom of the base fabric layer;

[0011] The base fabric layer includes a thermoplastic adhesive material layer and a carpet layer with a thickness of less than 15mm, wherein the thermoplastic adhesive material layer is bonded to the side of the carpet layer away from the pile.

[0012] The artificial grass fibers are tufted on the base fabric layer, and the roots of the artificial grass fibers penetrate the base fabric layer. The base fabric layer or the adhesive backing layer is bonded to the thermoplastic adhesive layer.

[0013] The pile side of the carpet layer and the hook side of the hook side material layer are detachably bonded.

[0014] The beneficial effects of this utility model are as follows: First, the artificial turf of this utility model uses a carpet layer with a pile surface as the base layer, and the whole can be recycled. In particular, during the installation process, two-component joint adhesives such as PU are no longer used, and the hook-and-face material layer can be directly used for pasting and splicing.

[0015] Secondly, an adhesive backing layer can be added, which not only secures the grass fibers but also increases the stiffness of the turf backing and the overall weight of the turf. This results in more stable product dimensions and allows for systems requiring less or even no infill. Especially for grass fibers made of special materials such as PA or PP, it is necessary to first apply adhesive to secure the grass fibers before performing a secondary heat-melt bonding.

[0016] Furthermore, the base fabric layer includes one or more of the following: a single-layer base fabric, a composite base fabric of a single-layer base fabric and a mesh fabric, a composite base fabric of a single-layer base fabric and a cotton fabric, a double-layer base fabric, a composite base fabric of a double-layer base fabric and an elastic pad, a composite base fabric of a single-layer base fabric and a non-woven fabric, or a carpet.

[0017] The material of the single-layer base fabric, double-layer base fabric, or mesh fabric includes one of the following: polypropylene (PP), polyethylene (PE), nylon (PA), or polyethylene terephthalate (PET).

[0018] The material of the cotton fabric includes one of the following: PP short fiber, PP long fiber, PET short fiber, PET long fiber, PA short fiber, PA long fiber, PA composite PET core packaging material, PP composite PA core packaging material, or PA composite PET core packaging material.

[0019] The double-layer base fabric and elastic pad composite base fabric includes: an elastic pad and two single-layer base fabrics, with the elastic pad located between the two single-layer base fabrics, and the two single-layer base fabrics being any combination of the same material or different materials;

[0020] The elastic pad includes any one of EVA (ethylene-vinyl acetate copolymer) foam pad, TPU (thermoplastic polyurethane elastomer) foam pad, or XPE (chemically cross-linked polyethylene foam material) foam pad;

[0021] The composite method includes one or more of the following: edge stitching, overlaying, needle punching, flat laying, quilting, or hot-melt bonding between layers using hot-melt adhesive materials.

[0022] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: the use of a double-layer base fabric and an elastic pad composite base fabric and the design of the seam process to form an integral unit is conducive to tufting production. The elastic pad in the base fabric layer is located in the direction of the grass fibers. The elastic pad sewn into the double-layer base fabric helps to improve the thermal stability of the dimensions and at the same time, it dissipates heat quickly in the direction of the grass fibers, reduces the surface temperature, and reduces the bulging problem caused by thermal expansion and contraction due to large temperature differences.

[0023] The double-layer base fabric and elastic pad composite base fabric tufting can meet the FIFA sports performance requirements and the FIFA QUILITY requirements for shock absorption and vertical deformation.

[0024] Furthermore, the carpet layer includes any one or a combination of several of the following: velvet carpet, striped carpet, jacquard carpet, loop pile carpet, or brushed carpet;

[0025] The weight of the carpet layer is 300-1500 g / m². 2 The thickness of the carpet layer is 8mm-12mm.

[0026] Furthermore, the material of the carpet layer includes: short fibers;

[0027] The short fibers are made of one of the following materials: polypropylene (PP), polyethylene (PE), nylon (PA), or polyethylene terephthalate (PET).

[0028] Furthermore, the hook-face material layer is a hook-face Velcro.

[0029] Furthermore, the thermoplastic adhesive material layer includes any one of powder, hot melt web film, or hot melt flat film;

[0030] The basis weight of the thermoplastic adhesive layer is 15-120 g / m³. 2 .

[0031] Furthermore, the material of the thermoplastic adhesive layer includes one of EVA, TPU, PA, PE or random PE.

[0032] The beneficial effects of adopting the above-mentioned further technical solutions: when the carpet weight is less than 300g / m² 2When the pile height is less than 4mm, the force between the pile and the hook surface is weak during splicing, making it easy to peel apart and resulting in poor splicing effect. When the weight per square meter is greater than 1500g / m², the pile height is also less than 4mm. 2 When the carpet pile thickness is greater than 15mm, the heat transfer effect is poor, and the heat-melting curing effect at the root of the grass fibers is poor, which easily leads to a significant decrease in the pull-out force of the grass fibers. When a thermoplastic adhesive layer is laminated on the side of the carpet away from the pile, the thermoplastic adhesive layer is located on the side of the carpet and the base fabric away from the grass fibers when laminating the lawn, which increases the adhesion between the two interfaces and makes the lawn size more stable and less prone to delamination.

[0033] Furthermore, the adhesive backing layer comprises: a polyolefin adhesive backing layer with a dry adhesive content of 800-2000 g / m². 2 .

[0034] Furthermore, the material of the polyolefin backing layer includes one of the following: polyethylene, polypropylene, ethylene-octene copolymer, ethylene-acrylic acid copolymer, ethylene-acrylate copolymer, ethylene-vinyl acetate copolymer, or amorphous α-polyolefin. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of the easy-to-install, recyclable high-performance artificial turf with an adhesive backing layer according to this utility model;

[0036] Figure 2 This is a schematic diagram of the structure of the easy-to-install, recyclable high-performance artificial turf without a backing layer of this utility model.

[0037] Among them, 1-artificial turf block, 2-artificial grass fiber, 3-base fabric layer, 4-backing adhesive layer, 5-thermoplastic adhesive material layer, 6-carpet layer, 7-hook and loop material layer;

[0038] Figure 3 This is a schematic diagram of a sample taken from the seam area of ​​an artificial turf field during a connection strength test.

[0039] a- The artificial turf layer to the left of the seam;

[0040] b - The bonding area between the hook-face material layer and the artificial turf layer on the left side of the seam;

[0041] c - The bonding area between the hook-face material layer and the artificial turf layer on the right side of the seam;

[0042] d - The artificial turf layer to the right of the seam. Detailed Implementation

[0043] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and 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 protection scope of this utility model.

[0044] like Figure 1-2 As shown, the easy-to-install and recyclable high-performance artificial turf includes: an artificial turf layer and a hook surface material layer 7, wherein the bottom of the artificial turf layer is detachably bonded to the hook surface material layer 7.

[0045] The artificial turf layer consists of multiple artificial turf blocks 1 spliced ​​together. The artificial turf block 1 includes, from top to bottom, artificial grass fibers 2, a base fabric layer 3 and a bottom fabric layer.

[0046] Alternatively, from top to bottom, it includes: artificial grass fibers 2, base fabric layer 3, adhesive backing layer 4 and bottom fabric layer, with the adhesive backing layer 4 bonded to the bottom of the base fabric layer 3;

[0047] The base layer includes a thermoplastic adhesive layer 5 and a carpet layer 6 with a thickness of less than 15mm. The thermoplastic adhesive layer 5 is bonded to the side of the carpet layer 6 away from the pile.

[0048] Artificial grass fibers 2 are tufted on the base fabric layer 3, and the roots of the artificial grass fibers 2 penetrate the base fabric layer 3. The base fabric layer 3 or the adhesive backing layer 4 is bonded to the thermoplastic adhesive layer 5.

[0049] The pile side of carpet layer 6 and the hook side of hook side material layer 7 are detachably bonded.

[0050] In one embodiment, the base fabric layer 3 includes one or more of the following: a single-layer base fabric, a single-layer base fabric and a mesh fabric composite base fabric, a single-layer base fabric and a cotton fabric composite base fabric, a double-layer base fabric, a double-layer base fabric and an elastic pad composite base fabric, a single-layer base fabric and a non-woven fabric composite base fabric, or a carpet.

[0051] The materials for single-layer base fabric, double-layer base fabric, or mesh fabric include: one of polypropylene, polyethylene, nylon, or polyethylene terephthalate;

[0052] The materials used for cotton fabric include: one of the following: PP short fiber, PP long fiber, PET short fiber, PET long fiber, PA short fiber, PA long fiber, PA composite PET core packaging material, PP composite PA core packaging material, or PA composite PET core packaging material;

[0053] The double-layer base fabric and elastic pad composite base fabric includes: an elastic pad and two single-layer base fabrics, with the elastic pad located between the two single-layer base fabrics, and the two single-layer base fabrics being any combination of the same material or different materials;

[0054] Elastic pads include any one of the following: EVA foam pads, TPU foam pads, or XPE foam pads;

[0055] Composite methods include: edge stitching, layering, needle punching, flat laying, quilting, or hot-melt bonding between layers using hot-melt adhesive materials, or a combination of one or more of these methods.

[0056] In one embodiment, carpet layer 6 includes any one or a combination of several of the following: velvet carpet, striped carpet, jacquard carpet, loop pile carpet, or brushed carpet.

[0057] The weight of carpet layer 6 is 300-1500 g / m². 2 The thickness of carpet layer 6 is 8mm-12mm.

[0058] In one embodiment, the carpet material includes: short fibers;

[0059] The materials used for short fibers include: polypropylene, polyethylene, nylon, or polyethylene terephthalate.

[0060] In one embodiment, the hook-and-loop material layer 7 is a hook-and-loop fastener.

[0061] In one embodiment, the thermoplastic adhesive layer 5 comprises any one of powder, hot melt web, or hot melt flat film;

[0062] The basis weight of thermoplastic adhesive layer 5 is 15-120 g / m². 2 .

[0063] In one embodiment, the thermoplastic adhesive layer 5 is made of one of the following materials: EVA, TPU, PA, PE, or random PE.

[0064] In one embodiment, the adhesive backing layer 4 comprises: a polyolefin adhesive backing layer 4 with a dry adhesive weight of 800-2000 g / m². 2 .

[0065] In one embodiment, the polyolefin backing layer 4 is made of one of the following materials: polyethylene, polypropylene, ethylene-octene copolymer, ethylene-acrylic acid copolymer, ethylene-acrylate copolymer, ethylene-vinyl acetate copolymer, or amorphous α-polyolefin.

[0066] A method for preparing easy-to-install, recyclable, high-performance artificial turf includes the following steps:

[0067] (1) Fiber drawing process: Mix polyethylene resin and / or polypropylene resin, color masterbatch and additives evenly, and extrude the mixture into fibers using a single screw extruder to process it into artificial grass fibers 2.

[0068] (2) Tucking process: The twisted artificial turf is tucking onto the base fabric using a tucking machine with a specified row spacing and needle spacing to form a semi-finished artificial turf.

[0069] (3) Backing process: Polyolefin adhesive is applied to the backing of the artificial turf semi-finished product and cured in an oven to obtain artificial turf;

[0070] (4) Hot melt lamination process: The thermoplastic adhesive material is laminated to the side of the carpet away from the pile surface using a hot melt lamination machine, fixed on the carpet surface and then rolled up for later use; the artificial turf semi-finished product or the artificial turf with adhesive backing is laminated to the carpet using a hot melt lamination machine with thermoplastic adhesive material to obtain artificial turf block 1;

[0071] (5) Installation process: After splicing multiple artificial turf blocks 1, the pile side of the carpet is bonded to the hook side of the hook material to obtain an easy-to-install, recyclable high-performance artificial turf.

[0072] In one embodiment, the preparation method of polyolefin adhesive includes the following steps: mixing polyolefin emulsion and inorganic filler at a mass ratio of 6:3, stirring at a speed of 500 rpm for 40 min to obtain polyolefin adhesive.

[0073] In one embodiment, the polyolefin emulsion is selected from one or more of polyethylene emulsion, polypropylene emulsion, ethylene-octene copolymer emulsion, ethylene-acrylic acid copolymer emulsion, ethylene-acrylate copolymer emulsion, ethylene-vinyl acetate copolymer emulsion, or amorphous α-polyolefin emulsion.

[0074] In one embodiment, the inorganic filler is selected from one or more of calcium carbonate, mica, barium sulfate, or talc.

[0075] Example 1

[0076] A method for preparing easy-to-install, recyclable, high-performance artificial turf includes the following steps:

[0077] (1) Filament drawing process: Mix 88 parts of polyethylene, 10 parts of color masterbatch and 2 parts of processing aid evenly according to the mass fraction. Extrude the mixture into filaments using a single screw extruder. The draw ratio of the grass filaments is 5.5, the shrinkage ratio is 25%, and the hot water tank temperature is 85-90℃. Process it into artificial grass filaments 2. Twist the grass filaments and put them into storage.

[0078] (2) Tucking process: The twisted artificial turf is tucking onto the PP single-layer base fabric with a specified row spacing and needle spacing using a tucking machine to form a semi-finished artificial turf.

[0079] (3) Hot melt lamination process: EVA hot melt web film with a weight of 50g / m 2 The composite material is laminated to a weight of 300 g / m² using a hot melt lamination machine. 2A PET short fiber loop pile carpet with a thickness of 8mm-9mm is fixed to the carpet surface on the side away from the pile and then rolled up for later use; the artificial turf semi-finished product is bonded to the carpet using an adhesive material and a hot melt composite machine to obtain artificial turf block 1;

[0080] (4) Installation process: After splicing multiple artificial turf blocks 1, the pile side of the carpet is bonded to the hook side of the hook and loop fastener to obtain an easy-to-install, recyclable, high-performance artificial turf.

[0081] Example 2

[0082] Example 2 is the same as Example 1, except that step (3) is 450g / m 2 PET short fiber loop pile carpet with a thickness of 9-10mm.

[0083] Example 3

[0084] Example 3 is the same as Example 1, except that step (3) is 800g / m 2 PET short fiber loop pile carpet with a thickness of 11-12mm.

[0085] Example 4

[0086] Example 4 is the same as Example 1, except that step (3) is 1500g / m 2 PET short fiber loop pile carpet with a thickness of 13-14mm.

[0087] Comparative Example 1

[0088] Comparative Example 1 is the same as Example 1, except for step (3) 250g / m 2 PET short fiber loop pile carpet with a thickness of 6-7mm.

[0089] Comparative Example 2

[0090] Comparative Example 2 is the same as Example 1, except for step (3) 2000g / m 2 PET short fiber loop pile carpet with a thickness of 15-16mm.

[0091] Comparative Example 3

[0092] Comparative Example 3 is the same as Example 1, except that in step (3) the carpet is replaced with 120g / m². 2 PET nonwoven fabric with a thickness of 2-3mm.

[0093] Permeability test method:

[0094] The water penetration rate of all samples was tested according to the method in FIFA Quality Programme for Football Turf-2024-20.

[0095] Before testing, place the sample to be tested in a cyclic environment at 23±2℃ for at least 4 hours.

[0096] Clamp the sample to be tested between two metal or plastic rings with an inner diameter of 300mm ± 2mm. Place a support mesh underneath the clamped sample to prevent deformation caused by excessive water injection during the seepage test. This mesh must ensure that the maximum deformation from the outside of the rings to the center does not exceed 5mm. After clamping, seal the gaps with sealant to prevent water leakage. After setting up the test apparatus, inject 5L of water into the rings to wet the sample, while simultaneously checking the apparatus for leaks. If any leaks are found, reseal the apparatus. This leak detection process should take at least 30 minutes.

[0097] After preparation, ensure that the testing device is level before the test begins. Then, inject a large amount of water into the device, ensuring that the water level is 70-90mm above the bottom of the sample to be tested. Start timing when the water level drops to 30mm from the bottom and record the time taken for the water to drop from 30mm to 10mm, accurate to 0.1 seconds. If the penetration rate is slow, the test should be stopped after 30 minutes.

[0098] Repeat the test twice more using the above method, and take the average of the last two results.

[0099] The infiltration rate (I) is calculated according to the following formula. c )calculate:

[0100] Ic = F wc / t c

[0101] in:

[0102] F wc The height (mm) of the water level drop, usually 20mm;

[0103] t c The time (h) required for the water level to drop to a certain height;

[0104] Peel strength test method:

[0105] Five 10*15cm warp pieces and five 10*15cm weft pieces were taken from the artificial turf. The base fabric layer and the sub-fabric layer 3 were clamped onto a power-driven clamp. The moving speed of the power-driven clamp was 100m / min and remained constant throughout. The average value of the force separating the base fabric layer and the sub-fabric layer 3 was recorded. The result was the average of five tests, accurate to 1N.

[0106] Connection strength test:

[0107] Referring to the national standard GB / T 43566-2023, samples were taken from the joint area of ​​the artificial turf field. Figure 3 The five specimens shown are prepared samples. The prepared samples should be cured at (23±2)℃ and (50±5)%RH for 88 hours before testing.

[0108] The sample was mounted on the clamp of the mechanical testing machine, with the sample axially aligned with the direction of the tensile force. The power-driven clamp moved at a speed of 100 m / min, maintaining this speed throughout, and the maximum force at which the sample broke was recorded. The result was the average of five tests, accurate to 1 N.

[0109] Cyclic connection strength test: After the connection strength test is completed, the spline is re-attached and the connection force is tested again. The test is repeated 3 times and the data is recorded.

[0110] Pull-out force test method:

[0111] The test was conducted using an electronic universal testing machine according to the method in standard ISO4919. Specifically, a freshly prepared 20*20cm sample was cut and placed in an environment with a relative humidity of (65±4)% and a temperature of (20±2)℃ for 24 hours. The sample was then placed on the electronic universal testing machine and clamped with pliers perpendicular to the sample direction. The machine was turned on, and the maximum force value was recorded after the grass fibers were completely pulled out. The maximum value was recorded after the grass fibers were completely pulled out. The pull-out force value for each sample was based on the average of 10 sample data.

[0112] Vibration absorption test:

[0113] Conducted according to the FIFA TEST METHOD 2024-03 method in the new standard manual of the FIFA Quality Programme for Football Turf (FQP).

[0114] Vertical deformation:

[0115] Conducted according to FIFA TEST METHOD 2024-04 in the new standard manual of the FIFA Quality Programme for Football Turf (FQP).

[0116] Table 1 Comparison data of different comparative examples and embodiments

[0117]

[0118]

[0119] As can be seen from the examples and comparative examples in Table 1, there is a correlation between the water permeability of the turf and the carpet specifications. The smaller the carpet weight of the turf, the higher the overall water permeability of the artificial turf. However, in Comparative Examples 1 and 2, when the loop pile carpet weight is 250 g / m², the water permeability is significantly lower. 2 At times, the density of the loop pile decreases, affecting the bonding strength when splicing lawns. This is especially true when the weight of the loop pile carpet is 2000 g / m². 2 At the same time, the excessively thick backing fabric resulted in insufficient heat for heat melting, significantly reducing the pull-out strength of both individual clumps and individual turf. In Comparative Example 3, when the carpet specification was changed to 120g / m²... 2 When using non-woven fabric, because the base fabric lacks a loop pile surface, the joint strength of the turf patchwork is only 30N. Based on the cyclic joint strength test data, after three cycles, the strength decreases by less than 10%.

[0120] Example 5

[0121] A method for preparing easy-to-install, recyclable, high-performance artificial turf includes the following steps:

[0122] (1) Filament drawing process: Mix 88 parts of polyethylene, 10 parts of color masterbatch and 2 parts of processing aid evenly according to the mass fraction. Extrude the mixture into filaments using a single screw extruder. The draw ratio of the grass filaments is 5.5, the shrinkage ratio is 25%, and the hot water tank temperature is 85-90℃. Process it into artificial grass filaments 2. Twist the grass filaments and put them into storage.

[0123] (2) Tucking process: The twisted artificial turf is tucking onto the PP single-layer base fabric with a specified row spacing and needle spacing using a tucking machine to form a semi-finished artificial turf.

[0124] (3) Hot melt lamination process: The random PE adhesive powder is prepared at a weight of 50g / m². 2 The composite material is laminated to a weight of 500 g / m² using a hot melt lamination machine. 2 A 9mm-10mm thick PET short fiber loop pile carpet is fixed to the carpet surface on the side away from the pile and then rolled up for later use; the artificial turf semi-finished product is bonded to the carpet using an adhesive material and a hot melt composite machine to obtain artificial turf block 1;

[0125] (4) Installation process: After splicing multiple artificial turf blocks 1, the pile side of the carpet is bonded to the hook side of the hook and loop fastener to obtain an easy-to-install, recyclable, high-performance artificial turf.

[0126] Example 6

[0127] Example 6 is the same as Example 5, except that step (3) is 500g / m 2 Short fiber loop pile carpet with PP thickness of 9-10mm.

[0128] Example 7

[0129] Example 7 is the same as Example 5, except that step (3) is 500g / m 2 PA short fiber loop pile carpet with a thickness of 9-10mm.

[0130] Example 8

[0131] Example 8 is the same as Example 5, except that step (3) is 500g / m 2 PA and PET blended short fiber loop pile carpet, 8-9mm thick.

[0132] Example 9

[0133] Example 9 is the same as Example 5, except that step (3) is 500g / m 2 Short fiber striped carpet with PP thickness of 8-9mm.

[0134] Comparative Example 5

[0135] The method for preparing artificial turf includes the following steps:

[0136] (1) Filament drawing process: Mix 88 parts of polyethylene, 10 parts of color masterbatch and 2 parts of processing aid evenly according to the mass fraction. Extrude the mixture into filaments using a single screw extruder. The draw ratio of the grass filaments is 5.5, the shrinkage ratio is 25%, and the hot water tank temperature is 85-90℃. Process it into artificial grass filaments 2. Twist the grass filaments and put them into storage.

[0137] (2) Tucking process: The twisted artificial turf is tucking onto the PP single-layer base fabric with a specified row spacing and needle spacing using a tucking machine to form a semi-finished artificial turf.

[0138] (3) Apply polyurethane adhesive evenly to the backing surface of the semi-finished artificial turf, with an adhesive application rate of 1000g / m². 2 Then, it is dried to obtain artificial turf.

[0139] Table 2 Comparison data of different comparative examples and embodiments

[0140]

[0141]

[0142] As can be seen from Table 2, loop pile carpets have a certain cushioning effect. When the density of the loop pile carpet is high enough, such as in Example 4, the weight reaches 1500 g / m². 2 In some cases, the standard requirements can be met without the use of an elastic pad.

[0143] Example 10

[0144] Example 10 is the same as Example 5, except that in step (3) 70g / m 2 EVA adhesive material is laminated to 500g / m² using a hot melt lamination machine.2 PET short fiber loop pile carpet with a thickness of 8-9mm.

[0145] Example 11

[0146] Example 11 is the same as Example 5, except that in step (3) 120g / m 2 EVA adhesive material is laminated to 500g / m² using a hot melt lamination machine. 2 PET short fiber loop pile carpet with a thickness of 8-9mm.

[0147] Example 12

[0148] Example 12 is the same as Example 5, except that in step (3) 100g / m 2 PE adhesive material is laminated to 500g / m² using a hot melt lamination machine. 2 PET short fiber loop pile carpet with a thickness of 8-9mm.

[0149] Example 13

[0150] Example 13 is the same as Example 5, except that in step (3) 100g / m 2 PE adhesive material is laminated to 500g / m² using a hot melt lamination machine. 2 Short fiber loop pile carpet with PP thickness of 8-9mm.

[0151] Example 14

[0152] Example 14 is the same as Example 5, except that in step (3) 100g / m 2 TPU adhesive material is laminated to 500g / m² using a hot melt lamination machine. 2 Short fiber loop pile carpet with PP thickness of 8-9mm.

[0153] Example 15

[0154] Example 15 is the same as Example 5, except that in step (3) 80g / m 2 PA adhesive material is laminated to 500g / m² using a hot melt lamination machine. 2 PA short fiber loop pile carpet with a thickness of 8-9mm.

[0155] Example 16

[0156] Example 16 is the same as Example 5, except that in step (3) 100g / m 2 PA adhesive material is laminated to 500g / m² using a hot melt lamination machine. 2 PA short fiber loop pile carpet with a thickness of 8-9mm.

[0157] Comparative Example 6

[0158] Comparative Example 6 is the same as Example 5, except that in step (3) there is no adhesive material, and it is directly laminated to 500g / m³ using a hot melt laminating machine. 2 PET short fiber loop pile carpet with a thickness of 8-9mm.

[0159] Comparative Example 7

[0160] The method for preparing artificial turf includes the following steps:

[0161] (1) Filament drawing process: Mix 88 parts of polyethylene, 10 parts of color masterbatch and 2 parts of processing aid evenly according to the mass fraction. Extrude the mixture into filaments using a single screw extruder. The draw ratio of the grass filaments is 5.5, the shrinkage ratio is 25%, and the hot water tank temperature is 85-90℃. Process it into artificial grass filaments 2. Twist the grass filaments and put them into storage.

[0162] (2) Tucking process: The twisted artificial turf is tucking onto the PP single-layer base fabric with a specified row spacing and needle spacing using a tucking machine to form a semi-finished artificial turf.

[0163] (3) Backing process: Apply polyurethane adhesive to the backing of the semi-finished artificial turf, with an adhesive application rate of 1000g / m². 2 Artificial turf is obtained by curing in an oven;

[0164] (4) Hot melt lamination process: Apply TPU hot melt adhesive at a weight of 100g / m². 2 The composite material is laminated to a weight of 500 g / m² using a hot melt lamination machine. 2 A 9mm-10mm thick PET short fiber loop pile carpet is fixed to the carpet surface with the side away from the pile side and then rolled up for later use; the artificial turf with adhesive backing is bonded to the carpet with TPU hot melt adhesive using a hot melt laminating machine to obtain artificial turf block 1;

[0165] (5) Installation process: After splicing multiple artificial turf blocks 1, the pile side of the carpet is bonded to the hook side of the hook and loop fastener to obtain an easy-to-install, recyclable high-performance artificial turf.

[0166] Table 3 Comparison data of different comparative examples and embodiments

[0167]

[0168]

[0169] According to Table 3, the adhesive material can be either powder or film, and it has good bonding strength with the carpet. In the comparative example, when there is no adhesive material, the bonding strength drops significantly. When it is connected to the PU turf after backing, the bonding force between the adhesive material and the backing is poor, and it is easy to separate. This is mainly because after the backing is applied, the turf backing hardens, the roots of the turf protrude, the contact surface decreases, and the overall peeling force decreases.

[0170] Example 17

[0171] A method for preparing easy-to-install, recyclable, high-performance artificial turf includes the following steps:

[0172] (1) Filament drawing process: Mix 88 parts of polyethylene, 10 parts of color masterbatch and 2 parts of processing aid evenly according to the mass fraction. Extrude the mixture into filaments using a single screw extruder. The draw ratio of the grass filaments is 5.5, the shrinkage ratio is 25%, and the hot water tank temperature is 85-90℃. Process it into artificial grass filaments 2. Twist the grass filaments and put them into storage.

[0173] (2) Tucking process: The twisted artificial turf is tucking onto the PP single-layer base fabric with a specified row spacing and needle spacing using a tucking machine to form a semi-finished artificial turf.

[0174] (3) Hot melt lamination process: EVA and random PE hot melt web film are laminated at a weight of 30g / m 2 The composite material is laminated to a weight of 500 g / m² using a hot melt lamination machine. 2 A PET short fiber loop pile carpet with a thickness of 8mm-9mm is fixed to the carpet surface on the side away from the pile and then rolled up for later use; the artificial turf semi-finished product is bonded to the carpet using an adhesive material and a hot melt composite machine to obtain artificial turf block 1;

[0175] (4) Installation process: After splicing multiple artificial turf blocks 1, the pile side of the carpet is bonded to the hook side of the hook and loop fastener to obtain an easy-to-install, recyclable, high-performance artificial turf.

[0176] Example 18

[0177] Example 18 is the same as Example 16, except that in step (2), the twisted artificial turf is tufted onto the PP single-layer base fabric and PP mesh composite base fabric with a specified row spacing and needle spacing using a tufting machine to form a semi-finished artificial turf.

[0178] The composite base fabric of PP single-layer base fabric and PP mesh fabric is made of PP single-layer base fabric and PP mesh fabric with a basis weight of 30g / m 2 EVA and random PE composite adhesive material is hot-melt bonded together.

[0179] Example 19

[0180] Example 19 is the same as Example 16, except that in step (2), the twisted artificial turf is tucked onto the double-layer base fabric and elastic pad composite base fabric with a specified row spacing and needle spacing using a tufting machine to form a semi-finished artificial turf.

[0181] The double-layer base fabric and the elastic pad composite base fabric are sewn together using a quilting process. It includes: a 5mm thick EVA foam elastic pad and two layers of PP single-layer base fabric, with the elastic pad located between the two layers of PP single-layer base fabric.

[0182] The other steps and parameters are the same as in Example 16.

[0183] Example 20

[0184] Example 20 is the same as Example 16, except that in step (2), the twisted artificial turf is tucked onto the double-layer base fabric and elastic pad composite base fabric with a specified row spacing and needle spacing using a tufting machine to form a semi-finished artificial turf.

[0185] The double-layer base fabric and the elastic pad composite base fabric are sewn together using a quilting process. It includes: a 5mm thick EVA foam elastic pad and two layers of non-woven fabric, with the elastic pad located between the two layers of non-woven fabric.

[0186] Table 4 Comparison data of different embodiments

[0187]

[0188]

[0189] As can be seen from Table 4, Examples 19-20 can tuft the turf onto a composite base fabric of double-layer base fabric and elastic pad, eliminating the need for laying the elastic pad during installation, thus meeting the FIFA Quality requirements for performance testing. This is especially beneficial for some special needs of golf, enabling easy installation.

[0190] Example 21

[0191] A method for preparing easy-to-install, recyclable, high-performance artificial turf includes the following steps:

[0192] (1) Filament drawing process: Mix 88 parts of polyethylene, 10 parts of color masterbatch and 2 parts of processing aid evenly according to the mass fraction. Extrude the mixture into filaments using a single screw extruder. The draw ratio of the grass filaments is 5.5, the shrinkage ratio is 25%, and the hot water tank temperature is 85-90℃. Process it into artificial grass filaments 2. Twist the grass filaments and put them into storage.

[0193] (2) Tufting process: The twisted artificial turf is tufted onto the PP single-layer base fabric and PP mesh composite base fabric with a specified row spacing and needle spacing using a tufting machine to form a semi-finished artificial turf.

[0194] (3) Backing process: 60 parts of ethylene-vinyl acetate copolymer emulsion and 30 parts of inorganic filler calcium carbonate are mixed and stirred at 500 rpm for 40 minutes to obtain an adhesive for artificial turf. The adhesive is then applied to the backing of the semi-finished artificial turf and cured in an oven to obtain the artificial turf. The dry adhesive weight is 900-1000 g / m². 2 ;

[0195] (4) Hot melt lamination process: The hot melt web of EVA and random PE composite adhesive material is made at a weight of 100g / m 2 The composite material is laminated to a weight of 500 g / m² using a hot melt lamination machine. 2 A PET short fiber loop pile carpet with a thickness of 8mm-9mm is fixed to the carpet surface on the side away from the pile and then rolled up for later use; the artificial turf with adhesive backing is bonded to the carpet using an adhesive material and a hot melt laminating machine to obtain artificial turf block 1;

[0196] (4) Installation process: After splicing multiple artificial turf blocks 1, the pile side of the carpet is bonded to the hook side of the hook and loop fastener to obtain an easy-to-install, recyclable, high-performance artificial turf.

[0197] Example 22

[0198] Example 22 is the same as Example 21, except that in step (3), the amount of polyolefin backing adhesive is 1500-1600 g / m. 2 .

[0199] Example 23

[0200] Example 23 is the same as Example 22, except that step (2) involves tufting the fabric onto a PP single-layer base fabric and a cotton composite base fabric (the cotton fabric is made of PET short fiber).

[0201] Example 24

[0202] Example 24 is the same as Example 21, except for step (3) the backing adhesive process: 60 parts of ethylene-octene copolymer emulsion and 30 parts of inorganic filler barium sulfate are mixed and stirred at a stirring speed of 500 rpm for 40 min to obtain an adhesive for artificial turf. The polyolefin adhesive is then applied to the backing of the artificial turf semi-finished product and cured in an oven to obtain the artificial turf. The dry adhesive weight is 900-1000 g / m². 2 ;

[0203] Comparative Example 8

[0204] Comparative Example 8 is the same as Example 21, except that in step (3), the carboxylated styrene-butadiene adhesive is applied to the backing of the semi-finished artificial turf, and then cured in an oven to obtain the artificial turf; the amount of polyolefin backing adhesive is 1500-1600 g / m². 2 .

[0205] Comparative Example 9

[0206] Comparative Example 9 is the same as Example 21, except that in step (3), polyurethane adhesive is applied to the backing of the semi-finished artificial turf, and then cured in an oven to obtain the artificial turf; the amount of polyolefin backing adhesive is 900-1000 g / m². 2 .

[0207] Table 5 Comparison data of different comparative examples and embodiments

[0208]

[0209]

[0210] As can be seen from Table 4, when using polyolefin adhesives, bonding materials, and carpet structures in Example 23, PP single-layer composite fabric was selected, and the adhesive content was controlled at 1500 g / m². 2 The peel strength is basically the same as in Example 18. When the adhesive content is increased to 1500 g / m 2 At this time, the backing carpet surface is flat, with a large contact area, and the polyolefin material has good adhesion to EVA and random PE composite materials. This solution is preferred for special grass fiber materials such as PA and PP grass fibers. Comparing Comparative Examples 8 and 9 with any of Examples 21-24, under the same conditions, the peel force data clearly show that the polyolefin adhesive is more suitable for polyolefin, carboxylated styrene-butadiene latex, and polyurethane latex.

[0211] The description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An easy-to-install, recyclable, high-performance artificial turf, characterized in that, include: The artificial turf layer and the hook surface material layer are provided, wherein the bottom of the artificial turf layer is detachably bonded to the hook surface material layer. The artificial turf layer comprises multiple artificial turf blocks spliced ​​together, and the artificial turf blocks, from top to bottom, include: artificial grass fibers, a base fabric layer, and a bottom fabric layer; Alternatively, from top to bottom, it includes: artificial grass fibers, a base fabric layer, an adhesive backing layer, and a bottom fabric layer, wherein the adhesive backing layer is bonded to the bottom of the base fabric layer; The base fabric layer includes a thermoplastic adhesive material layer and a carpet layer with a thickness of less than 15mm, wherein the thermoplastic adhesive material layer is bonded to the side of the carpet layer away from the pile surface. The artificial grass fibers are tufted on the base fabric layer, and the roots of the artificial grass fibers penetrate the base fabric layer. The base fabric layer or the adhesive backing layer is bonded to the thermoplastic adhesive layer. The pile side of the carpet layer and the hook side of the hook side material layer are detachably bonded.

2. The easy-to-install, recyclable, high-performance artificial turf according to claim 1, characterized in that, The base fabric layer includes one or more of the following: single-layer base fabric, single-layer base fabric and mesh fabric composite base fabric, single-layer base fabric and cotton fabric composite base fabric, double-layer base fabric, double-layer base fabric and elastic pad composite base fabric, single-layer base fabric and non-woven fabric composite base fabric, or carpet. The material of the single-layer base fabric, double-layer base fabric, or mesh fabric includes one of the following: polypropylene, polyethylene, nylon, or polyethylene terephthalate; The material of the cotton fabric includes one of the following: PP short fiber, PP long fiber, PET short fiber, PET long fiber, PA short fiber, PA long fiber, PA composite PET core packaging material, PP composite PA core packaging material, or PA composite PET core packaging material. The double-layer base fabric and elastic pad composite base fabric includes: an elastic pad and two single-layer base fabrics, with the elastic pad located between the two single-layer base fabrics, and the two single-layer base fabrics being any combination of the same material or different materials; The elastic pad includes any one of EVA foam pad, TPU foam pad, or XPE foam pad; The composite method includes one or more of the following: edge stitching, overlaying, needle punching, flat laying, quilting, or hot-melt bonding between layers using hot-melt adhesive materials.

3. The easy-to-install, recyclable, high-performance artificial turf according to claim 1, characterized in that, The carpet layer includes any one or a combination of several of the following: velvet carpet, striped carpet, jacquard carpet, loop pile carpet, or brushed carpet; The weight of the carpet layer is 300-1500 g / m². 2 The thickness of the carpet layer is 8mm-12mm.

4. The easy-to-install, recyclable, high-performance artificial turf according to claim 3, characterized in that, The carpet layer is made of short fibers; The short fibers are made of one of the following materials: polypropylene, polyethylene, nylon, or polyethylene terephthalate.

5. The easy-to-install, recyclable, high-performance artificial turf according to claim 1, characterized in that, The thermoplastic adhesive layer includes any one of the following: powder, hot melt web film, or hot melt flat film; The basis weight of the thermoplastic adhesive layer is 15-120 g / m³. 2 .

6. The easy-to-install, recyclable, high-performance artificial turf according to claim 1, characterized in that, The thermoplastic adhesive layer is made of one of the following materials: EVA, TPU, PA, PE, or random PE.

7. The easy-to-install, recyclable, high-performance artificial turf according to claim 1, characterized in that, The adhesive backing layer comprises: a polyolefin adhesive backing layer with a dry adhesive content of 800-2000 g / m². 2 .

8. The easy-to-install, recyclable, high-performance artificial turf according to claim 7, characterized in that, The material of the polyolefin backing layer includes: polyethylene, polypropylene, ethylene-octene copolymer, ethylene-acrylic acid copolymer, ethylene-acrylate copolymer, ethylene-vinyl acetate copolymer, or amorphous α-polyolefin.

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