Micro-foaming all-plastic type plastic track

Abstract

The utility model belongs to the field of plastic runways, and discloses a micro-foaming all-plastic type plastic runway. The plastic track comprises a base layer, a bottom sealing layer, a waterproof layer, a micro-foaming elastic layer and a finishing coat layer which are sequentially arranged from bottom to top. According to the plastic runway, the micro-foaming elastic layer and the waterproof layer are adopted, so that the whole plastic runway system can more easily meet the impact resistance index requirement in the GB36246-2018 standard, and the waterproof safety is also improved.

Description

Technical Field

[0001] This utility model belongs to the field of plastic running tracks, and more specifically, relates to a micro-foamed all-plastic running track. Background Technology

[0002] Polyurethane plastic material is a new type of high-molecular synthetic material, which is now recognized as the best material for sports fields in the world. It has the advantages of high strength, good elasticity, good shock absorption, wear resistance, weather resistance, anti-slip, flatness and beautiful color. At the same time, the field is easy to clean and maintain, and is not affected by weather conditions. It is highly praised by people in the sports community, educators and the general public. It is now widely used in sports competition fields, school playgrounds and public fitness fields. The application in running track areas is called plastic running track.

[0003] The plastic running track system mainly consists of three parts: the sealing layer, the elastic layer, and the topcoat layer. Depending on the type of plastic running track system, there are mainly three types on the market: all-plastic, hybrid, and permeable. Among them, the all-plastic type has better overall stability because the elastic layer does not contain any particles and is made entirely of pure polyurethane through on-site casting. It is not affected by temperature changes throughout the year and is increasingly favored by international or domestic competition certification venues.

[0004] For asphalt concrete base courses, the existing all-plastic running track system mainly uses a non-foaming system for the elastic layer, which is fully cured after 24 hours. This method requires about 1.5 kg per square meter for a 1 mm thickness, which is relatively high. Moreover, this elastic layer forms a dense film, and it is difficult to pass the impact resistance requirements of GB36246-2018 standard in on-site spot checks.

[0005] In addition, it was found in actual construction that the micro-foamed elastic layer is particularly sensitive to the moisture in the base layer. If the moisture content of the base layer is slightly higher (more than 8%), the micro-foamed elastic layer will have problems such as uneven foaming, bubbling, and hollowing.

[0006] Therefore, there is an urgent need to propose a new type of micro-foamed all-plastic running track. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a micro-foamed all-plastic running track. This invention employs a micro-foamed elastic layer and a waterproof layer, making it easier for the entire running track system to meet the impact resistance requirements of the GB36246-2018 standard, while also improving waterproof safety.

[0008] To achieve the above objectives, this utility model provides a micro-foamed all-plastic running track, which includes, from bottom to top, a base layer, a sealing layer, a waterproof layer, a micro-foamed elastic layer, and a topcoat layer.

[0009] Preferably, the material of the micro-foamed elastic layer is Oriental Yuhong PSV-225.

[0010] Preferably, the wet film thickness of the micro-foamed elastic layer is 3.0-13.0 mm, and the dry film thickness after curing is 4.2-20.0 mm.

[0011] Preferably, the wet film thickness of the micro-foamed elastic layer is 3.5-7.2 mm, and the dry film thickness after curing is 5.0-11.0 mm.

[0012] Preferably, the base layer is an asphalt concrete base layer.

[0013] Preferably, the waterproof layer is made of polyurethane or EVA emulsion.

[0014] Preferably, the thickness of the waterproof layer is 0.1-1.0 mm.

[0015] Preferably, the thickness of the sealing layer is 0.5-1.0 mm.

[0016] Preferably, the thickness of the topcoat layer is 2.0-3.5 mm.

[0017] Preferably, the topcoat layer is a particulate topcoat layer or a self-textured topcoat layer.

[0018] The beneficial effects of the technical solution of this utility model are as follows:

[0019] This invention employs a micro-foamed elastic layer, which forms a micro-airbag structure during the curing process. As can be seen from the thickness of the micro-foamed elastic layer, it can reduce the amount of material used (the amount used per square meter is reduced to 0.99Kg-1.03Kg for a thickness of 1mm). At the same time, due to the micro-airbag structure, the entire plastic running track system is more likely to meet the impact resistance requirements of the GB36246-2018 standard.

[0020] This invention adds a waterproof layer, which can completely isolate water vapor, prevent the micro-foamed elastic layer from coming into contact with water vapor and causing blistering or bulging, ensure the operability of the construction site, and improve the safety of the entire plastic track system.

[0021] This utility model adds a waterproof layer, but as can be seen from the thickness of the micro-foamed elastic layer, the amount of micro-foamed elastic layer material used is reduced. Taking the 13mm thickness specified in GB36246-2018 standard as an example, the overall material cost is reduced by about 5-10 yuan / square meter.

[0022] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0024] Figure 1 This diagram shows a structural schematic of a micro-foamed all-plastic running track provided by this utility model.

[0025] The annotations in the attached figures are explained as follows:

[0026] 1. Asphalt concrete base layer, 2. Sealing layer, 3. Waterproof layer, 4. Micro-foamed elastic layer, 5. Topcoat layer. Detailed Implementation

[0027] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0028] This utility model provides a micro-foamed all-plastic running track, which includes, from bottom to top, a base layer, a sealing layer, a waterproof layer, a micro-foamed elastic layer, and a topcoat layer.

[0029] In one example, the material of the microfoamed elastic layer is Oriental Yuhong PSV-225.

[0030] In one example, the wet film thickness of the microfoamed elastic layer is 3.0-13.0 mm, and the dry film thickness after curing is 4.2-20.0 mm. In another example, the wet film thickness of the microfoamed elastic layer is 3.5-7.2 mm, and the dry film thickness after curing is 5.0-11.0 mm.

[0031] In one example, the base layer is an asphalt concrete base layer.

[0032] In one example, the waterproof layer is made of polyurethane or EVA emulsion.

[0033] In one example, the thickness of the waterproof layer is 0.1-1.0 mm.

[0034] In one example, the thickness of the sealing layer is 0.5-1.0 mm.

[0035] In one example, the thickness of the topcoat layer is 2.0-3.5 mm.

[0036] In one example, the topcoat layer is a particulate topcoat layer or a self-textured topcoat layer.

[0037] In this utility model, the construction method of the micro-foamed all-plastic running track includes:

[0038] 1. Base layer verification and cleaning: Verify the flatness, drainage slope, and compaction of the asphalt concrete base layer. If it does not meet the construction design requirements, it needs to be addressed in advance. After meeting the requirements, clean the dust and stains from the base layer surface.

[0039] 2. Sealing Base Layer Construction: Spread the sealing base layer material onto the base layer and spread it evenly using a trowel. This step is mainly used to fill the small gaps in the asphalt concrete base layer, achieving an overall smooth base layer and ensuring the sealing effect of the subsequent waterproof layer.

[0040] 3. Waterproofing layer construction: Apply the waterproofing material by roller or spray onto the base coat, ensuring even application and no missed areas to guarantee the waterproofing effect.

[0041] 4. Construction of the Micro-foamed Elastic Layer: The micro-foamed elastic layer material is spread onto the waterproof layer and applied using a rake. The application thickness is adjusted according to design requirements and controlled using a rake ruler. During the application of the micro-foamed elastic layer, the amount of material used and the area covered should be measured continuously to verify that the thickness meets the requirements. Defoaming should be performed simultaneously with the application of the micro-foamed elastic layer, puncturing any air bubbles on the surface to reduce the number of pores in the cured layer. After the micro-foamed elastic layer is fully cured, the thickness is re-measured using a professional thickness gauge. At least 20 test points should be used; the larger the area, the more test points should be used. The final average value is taken.

[0042] 5. Topcoat application: Two coats are applied using professional spraying equipment to ensure the topcoat finish meets design requirements.

[0043] The present invention will be specifically described below through examples.

[0044] Example 1

[0045] This embodiment provides a micro-foamed all-plastic running track, such as... Figure 1 As shown, the plastic running track includes, from bottom to top, an asphalt concrete base layer 1, a sealing layer 2, a waterproof layer 3, a micro-foamed elastic layer 4, and a topcoat layer 5.

[0046] The thickness of the sealing layer 2 is 0.7 mm.

[0047] The waterproof layer 3 is made of polyurethane; the thickness of the waterproof layer is 0.5 mm.

[0048] The material of the micro-foamed elastic layer 4 is Oriental Yuhong PSV-225; the micro-foamed elastic layer 4 is applied in two coats, and its overall dry film thickness is 11.0mm (the first 3.5mm micro-foamed elastic layer is applied, and after curing for 24 hours, the average dry film thickness is 5.0mm. After another 24 hours of observation, the dry film thickness is basically unchanged; the second 4.0mm micro-foamed elastic layer is applied, and after curing for 24 hours, the average dry film thickness is 6.0mm. After another 24 hours of observation, the dry film thickness is basically unchanged).

[0049] The thickness of the topcoat layer 5 is 2.2 mm; the topcoat layer 5 is a self-textured topcoat layer.

[0050] Example 2

[0051] This embodiment provides a micro-foamed all-plastic running track, such as... Figure 1 As shown, the plastic running track includes, from bottom to top, an asphalt concrete base layer 1, a sealing layer 2, a waterproof layer 3, a micro-foamed elastic layer 4, and a topcoat layer 5.

[0052] The thickness of the sealing layer 2 is 1.0 mm.

[0053] The waterproof layer 3 is made of EVA emulsion waterproof layer; the thickness of the waterproof layer is 0.2mm.

[0054] The material of the micro-foamed elastic layer 4 is Oriental Yuhong PSV-225; the dry film thickness of the micro-foamed elastic layer 4 is 11mm (the elastic layer is 7.2mm thick, and the average dry film thickness is 11.0mm after curing for 24 hours. After another 24 hours of observation, the dry film thickness is basically unchanged).

[0055] The thickness of the topcoat layer 5 is 2.2 mm; the topcoat layer 5 is a self-textured topcoat layer.

[0056] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A micro-foamed all-plastic running track, characterized in that, The plastic running track comprises, from bottom to top, a base layer, a sealing layer, a waterproof layer, a micro-foamed elastic layer, and a topcoat layer; The material of the micro-foamed elastic layer is Oriental Yuhong PSV-225; The wet film thickness of the micro-foamed elastic layer is 3.5-7.2 mm, and the dry film thickness after curing is 5.0-11.0 mm.

2. The micro-foamed all-plastic running track according to claim 1, characterized in that, The base layer is an asphalt concrete base layer.

3. The micro-foamed all-plastic running track according to claim 1, characterized in that, The waterproof layer is made of polyurethane or EVA emulsion.

4. The micro-foamed all-plastic running track according to claim 1, characterized in that, The thickness of the waterproof layer is 0.1-1.0 mm.

5. The micro-foamed all-plastic running track according to claim 1, characterized in that, The thickness of the sealing layer is 0.5-1.0 mm.

6. The micro-foamed all-plastic running track according to claim 1, characterized in that, The thickness of the topcoat layer is 2.0-3.5 mm.

7. The micro-foamed all-plastic running track according to claim 1, characterized in that, The topcoat layer is a granular topcoat layer or a self-textured topcoat layer.

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