Puncture-resistant high-friction sports floor

Abstract

According to the puncture-resistant high-friction sports floor, a double-layer base structure is adopted, the strength and toughness are enhanced in combination with a cord fabric net, and the top layer is made of foamed PVC or polyurethane, so that excellent elasticity and comfort are provided. The fixing assembly ensures that the floor is stably installed on the ground through an expansion core and rubber sleeve expansion mechanism. The middle layer assembly is composed of an aluminum alloy metal plate and a sliding strip and is connected with the threaded sleeve in an interference fit mode, and stable connection of adjacent floors is achieved. The bearing assembly is provided with an anti-skid piece which comprises an elastic bearing block and an arc-shaped rubber bowl built-in anti-skid column, so that the friction force is increased, and meanwhile, the treading pressure is buffered. According to the technical scheme, the puncture resistance and friction force of the floor are effectively improved, the installation and maintenance process is simplified, the cost is reduced, the floor is suitable for various high-strength sports places, and a safe, comfortable and durable sports environment is provided.

Description

Technical Field

[0001] The invention relates to the technical field of sports floors, in particular to a sports floor used for withstanding high-intensity trampling and having excellent puncture resistance and friction. Background Art

[0002] Existing sports floors are mostly made of wood, PVC or other synthetic materials. While these materials provide a certain degree of comfort and durability, they also have some shortcomings. For example, wooden floors are easily affected by moisture, causing deformation and cracking; although PVC floors are wear-resistant, they are not good at puncture resistance and are easily damaged by sharp objects; other synthetic material floors may wear out under long-term high-intensity trampling, resulting in reduced friction and increasing the risk of slipping during exercise.

[0003] To solve the above problems, some improvement schemes have appeared in the prior art. For example, the puncture resistance is improved by increasing the thickness and hardness of the floor; anti-slip texture or coating is added to the floor surface to improve friction; multi-layer structure is used to increase the strength and wear resistance of the floor. However, while these schemes improve the performance of the floor, they also bring problems such as increased costs and increased construction difficulty.

[0004] Therefore, the present invention aims to provide a puncture-resistant high-friction sports floor to solve the above-mentioned problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a puncture-resistant and high-friction sports floor, aiming to solve the problems of the existing sports floors in terms of puncture resistance and friction.

[0006] To achieve the above object, the present invention provides the following solutions: A puncture-resistant high-friction sports floor, comprising: The base is used to withstand the stepping of the top surface of the floor and increase the elasticity; the top surface of the base is provided with a plurality of installation grooves, and the adjacent installation grooves are arranged in parallel; A fixing component is used for a stable connection between the base and the ground; the top of the fixing component is fixedly connected to the bottom of the base; the bottom of the fixing component is embedded and installed in the ground; The middle layer component is used to match with the base and increase the overall strength of the floor; the middle layer component includes a metal plate and a slide bar, the bottom surface of the metal plate is fixedly connected with the top surface of the slide bar, and the slide bar is provided with a plurality of slide bars, which are matched with and clamped with the mounting groove; The receiving assembly is used for people to use and step on; the receiving assembly includes a supporting plate, the supporting plate is slidably connected with a plurality of anti-slip parts, and the bottom surface of the anti-slip parts is fixedly connected to the top surface of the metal plate.

[0007] Preferably, the fixing assembly includes a sleeve, a plurality of fixing holes are opened on the ground, the sleeve is adapted to and slidably connected to the fixing holes; a rubber sleeve is fixedly connected to the inner wall of the sleeve, an expansion core is slidably connected to the inner wall of the rubber sleeve, and the top of the expansion core is fixedly connected to the bottom surface of the base.

[0008] Preferably, the side wall of the sleeve is provided with a plurality of hinge grooves, an anti-pullout block is hinged in the hinge groove, the bottom end of the anti-pullout block is hinged to the hinge groove, a chamfer is provided on one side of the anti-pullout block close to the rubber sleeve and the top end of the chamfer is inclined toward the rubber sleeve.

[0009] Preferably, a plurality of protrusions are provided on the side surface of the slide bar, and the mounting groove and the slide bar are fitted in an interference fit manner.

[0010] Preferably, the anti-slip part includes a supporting block, the top surface of the supporting block is in contact with an arc-shaped rubber bowl, an anti-slip column is arranged in the rubber bowl, the top end of the anti-slip column passes through the support plate and is slidably connected to the support plate, a connecting sleeve is provided on the outer side of the bottom end of the anti-slip column, the surrounding side of the connecting sleeve is fixedly connected to the inner wall of the rubber bowl, and the bottom surface of the anti-slip column is detachably connected to the bottom surface of the inner cavity of the rubber bowl.

[0011] Preferably, the two end surfaces of the slide bar are respectively fixedly connected with connecting columns, and one end of the connecting column is screwed with a threaded sleeve; the opposite side surfaces of the base are respectively provided with clearance grooves, and the clearance grooves are arranged vertically opposite to the end surfaces of the installation grooves.

[0012] Preferably, the metal plate is an aluminum alloy profile, and the metal plate and the slide bar are integrally formed.

[0013] Preferably, the base is divided into two layers, the bottom layer is made of rubber material or high-density polyethylene material, the top layer is made of foamed PVC material or polyurethane foam material, the density of the top layer is 300-500kg / m³, and several layers of curtain mesh are embedded inside the base; several of the curtain meshes are arranged parallel to the side of the base.

[0014] Preferably, the support plate is divided into two layers, the bottom layer is a PVC layer, and the top layer is covered with a UV layer or a PU layer.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects: Excellent puncture resistance: The bottom layer is made of rubber or high-density polyethylene and the top layer is made of foamed PVC or polyurethane foam, as well as a curtain mesh embedded in the base, which enhances the strength and toughness of the floor and effectively prevents puncture damage from sharp objects.

[0016] High friction design: The anti-slip design increases the friction between the soles of the feet and the floor during use, improving safety during exercise. At the same time, the sliding connection between the anti-slip column and the support plate and the deformation design of the rubber bowl and the connecting sleeve can increase friction and avoid discomfort caused by excessive contact with the soles of the feet.

[0017] Easy to construct and maintain: The design of the fixing components enables the floor to be firmly connected to the ground, while the design of the anti-pullout block enhances the anti-pullout and anti-dropout properties of the floor. The snap-fitting of the middle-layer components and the base and the screw-fitting of the threaded sleeve make the laying and connection of the floor easier and faster. In addition, the layered structure design of the floor also facilitates later maintenance and replacement.

[0018] Low cost: The materials used in the present invention are all common sports floor materials, and the cost is relatively low. At the same time, the layered structure and modular design of the floor also reduce the production and construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the side-view stereoscopic structure of the present invention; Figure 2 A schematic diagram of a side view of a three-dimensional structure with the pallet removed for the floor; Figure 3 for Figure 2 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic diagram of the three-dimensional structure of the anti-slip part from a side view; Figure 5 It is a schematic diagram of the three-dimensional structure of the slider from a side view.

[0020] Among them, 1. base; 2. mounting groove; 3. metal plate; 4. slide bar; 5. support plate; 6. sleeve; 7. rubber sleeve; 8. expansion core; 9. hinge groove; 10. anti-pullout block; 11. protrusion; 12. supporting block; 13. rubber bowl; 14. anti-slip column; 15. connecting sleeve; 16. connecting column; 17. threaded sleeve; 18. clearance groove. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] It should be noted that all components in the technical solution of this application require the necessary additional facilities of water supply, oil supply, electricity supply and gas supply to be driven and / or controlled. If there is no further explanation, it is assumed that the existing technology is used and equipped without special explanation.

[0023] It should be noted that, in order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Depend on Figure 1-5 The present invention discloses a puncture-resistant high-friction sports floor, comprising: The base 1 is used to withstand the trampling of the top surface of the floor and increase elasticity; a plurality of mounting grooves 2 are provided on the top surface of the base 1, and adjacent mounting grooves 2 are arranged in parallel; The fixing component is used for the stable connection between the base 1 and the ground; the top of the fixing component is fixedly connected to the bottom surface of the base 1; the bottom of the fixing component is embedded and installed in the ground; The middle layer component is used to adapt to the base 1 and increase the overall strength of the floor; the middle layer component includes a metal plate 3 and a slide bar 4, the bottom surface of the metal plate 3 is fixedly connected to the top surface of the slide bar 4, and the slide bar 4 is provided with a plurality of slide bars 4, which are adapted and clamped with the installation groove 2; The receiving assembly is used for people to use and step on; the receiving assembly includes a support plate 5, and the support plate 5 is slidably connected to a plurality of anti-slip parts, and the bottom surface of the anti-slip parts is fixedly connected to the top surface of the metal plate 3.

[0025] Further optimized solution, the fixing assembly includes a sleeve 6, a plurality of fixing holes are opened on the ground, the sleeve 6 is adapted to the fixing holes and slidably connected; the inner wall of the sleeve 6 is fixedly connected with a rubber sleeve 7, the inner wall of the rubber sleeve 7 is slidably connected with an expansion core 8, and the top of the expansion core 8 is fixedly connected to the bottom surface of the base 1. When the present invention is used, it needs to be fixedly installed on the ground, and the fixing holes are opened on the ground, and the fixing assembly is inserted to achieve the stability of the position of the base 1.

[0026] Furthermore, the expansion core 8 is frictionally and slidingly connected to the inner wall of the rubber sleeve 7, and the rubber sleeve 7 is made of nitrile rubber or silicone rubber, which can generate heat and expand when rubbed by the expansion core 8, turning the top of the anti-pullout block 10 on the outside of the sleeve 6 out to abut against the inner wall of the fixing hole, thereby enhancing the anti-pullout and anti-slip properties of the floor.

[0027] Further optimization scheme, the side wall of the sleeve 6 is provided with a plurality of hinge grooves 9, and an anti-pullout block 10 is hinged in the hinge groove 9, and the bottom end of the anti-pullout block 10 is hinged with the hinge groove 9, and the anti-pullout block 10 is provided with a chamfer on the side close to the rubber sleeve 7 and the top of the chamfer is inclined toward the rubber sleeve 7, and the chamfer of the anti-pullout block 10 can ensure that its top first contacts the expanded rubber sleeve 7, and then flips out of the outer wall of the sleeve 6. The firmness between the fixing component and the ground is increased.

[0028] In a further optimized solution, a plurality of protrusions 11 are provided on the side of the slide bar 4, and the installation groove 2 and the slide bar 4 are fitted in an interference fit. When the installation slide bar 4 enters the installation groove 2, the slide bar 4 needs to be cooled and directly filled into the installation groove 2 by virtue of the elastic deformation of the installation groove 2, and closely fits with the inner wall of the installation groove 2, and after the slide bar 4 recovers its temperature, it abuts against the installation groove 2, thereby improving the overall stability of the floor.

[0029] A further optimized solution is provided, in which the anti-slip part includes a supporting block 12, the top surface of the supporting block 12 is in contact with an arc-shaped rubber bowl 13, an anti-slip column 14 is provided in the rubber bowl 13, the top end of the anti-slip column 14 passes through the support plate 5 and is slidably connected to the support plate 5, a connecting sleeve 15 is provided on the outer side of the bottom end of the anti-slip column 14, the peripheral side of the connecting sleeve 15 is fixedly connected to the inner wall of the rubber bowl 13, and the bottom surface of the anti-slip column 14 is detachably connected to the bottom surface of the inner cavity of the rubber bowl 13.

[0030] Furthermore, the supporting blocks 12 are made of elastic rubber material, and when some supporting blocks 12 are subjected to the heavy pressure on the supporting plate 5, they will deform, thus completing the buffering of the stepping pressure. When the pressure continues to increase, the supporting plate 5 will drop a certain distance, and the anti-skid column 14 will protrude from the top surface of the supporting plate 5 and contact with the sole of the user's foot, thereby increasing the friction between the sole and the supporting plate 5, and when the sole of the foot steps on the anti-skid column 14, the anti-skid column 14 can rub against the supporting plate 5 downward, and the deformation of the rubber bowl 13 and the connecting sleeve 15 can also achieve buffering and offsetting of the stepping force, thereby increasing the friction of the sole of the foot and avoiding excessive contact with the sole of the foot, thereby increasing the discomfort of the sole of the foot.

[0031] To further optimize the solution, the two end faces of the slide bar 4 are respectively fixedly connected with connecting columns 16, and one end of the connecting column 16 is screwed with a threaded sleeve 17; the opposite sides of the base 1 are respectively provided with clearance grooves 18, and the clearance grooves 18 are arranged opposite to the end faces of the installation grooves 2 in the upper and lower directions. The clearance grooves 18 can make way for the position of the threaded sleeve 17 to be screwed with a tool, thereby realizing the connection between two adjacent floors.

[0032] According to a further optimization scheme, the metal plate 3 is an aluminum alloy profile, and the metal plate 3 and the slide bar 4 are integrally formed. The metal plate 3 can enhance the overall strength of the floor and prevent deformation after high-frequency use.

[0033] According to a further optimization scheme, the base 1 is divided into two layers, the bottom layer is made of rubber or high-density polyethylene, the top layer is made of foamed PVC or polyurethane foam, the density of the top layer is 300-500kg / m³, and several layers of curtain mesh are embedded inside the base 1; the several curtain meshes are arranged parallel to the side of the base 1, and the strength and toughness of the base 1 are enhanced by using the several curtain meshes.

[0034] According to a further optimization scheme, the support plate 5 is divided into two layers, the bottom layer is a PVC layer, and the top layer is covered with a UV layer or a PU layer. The bottom layer of the support plate 5 is a hard layer, and the top layer is a soft layer, which can not only ensure the supporting force of the support plate 5, but also improve the stepping feel.

[0035] The working process of this embodiment is as follows: The invention discloses a puncture-resistant high-friction sports floor, comprising a base 1, a fixing component, a middle layer component and a receiving component.

[0036] The base 1 is used to withstand the trampling of the top surface of the floor and increase elasticity. The base 1 is divided into two layers. The bottom layer is made of rubber or high-density polyethylene, which has good elasticity and wear resistance; the top layer is made of foamed PVC or polyurethane foam with a density of 300-500kg / m³, which further enhances the elasticity and comfort of the base 1. Several layers of curtain mesh are embedded inside the base 1. The curtain mesh is arranged parallel to the side of the base 1. The tensile and compression properties of the curtain mesh are used to enhance the strength and toughness of the base 1 to prevent deformation under high-intensity trampling.

[0037] The top surface of the base 1 is provided with a plurality of mounting grooves 2, and adjacent mounting grooves 2 are arranged in parallel for mounting the middle layer components. The design of the mounting grooves 2 enables the middle layer components to be firmly clamped on the base 1, thereby improving the overall stability of the floor.

[0038] The fixing assembly is used for the stable connection between the base 1 and the ground. The fixing assembly includes a sleeve 6. The ground is provided with a plurality of fixing holes. The sleeve 6 is adapted to the fixing holes and is slidably connected. A rubber sleeve 7 is fixedly connected to the inner wall of the sleeve 6. The rubber sleeve 7 is made of nitrile rubber or silicone rubber and has good elasticity and wear resistance. An expansion core 8 is slidably connected to the inner wall of the rubber sleeve 7. The top of the expansion core 8 is fixedly connected to the bottom surface of the base 1.

[0039] During installation, the fixing assembly is inserted into the fixing hole on the ground, and the expansion core 8 slides in the rubber sleeve 7 and generates heat by friction, causing the rubber sleeve 7 to expand. As the rubber sleeve 7 expands, the top of the anti-pullout block 10 on the outside of the sleeve 6 is turned out and abuts against the inner wall of the fixing hole, thereby achieving a stable connection between the base 1 and the ground. The provision of the anti-pullout block 10 further enhances the anti-pullout and anti-detachment properties of the floor.

[0040] The side wall of the sleeve 6 is provided with a plurality of hinge grooves 9, and an anti-extraction block 10 is hinged in the hinge groove 9. The bottom end of the anti-extraction block 10 is hinged with the hinge groove 9, and a chamfer is provided on the side close to the rubber sleeve 7, and the top of the chamfer is inclined toward the rubber sleeve 7. When the rubber sleeve 7 expands, it first contacts the chamfer of the anti-extraction block 10, pushing the anti-extraction block 10 to flip and abut against the inner wall of the fixing hole, thereby increasing the firmness between the fixing assembly and the ground.

[0041] The middle layer assembly is used to adapt to the base 1 and increase the overall strength of the floor. The middle layer assembly includes a metal plate 3 and a slide bar 4. The metal plate 3 is made of an aluminum alloy profile and has good strength and corrosion resistance. The bottom surface of the metal plate 3 is fixedly connected to the top surface of the slide bar 4 to form an integrated structure, which improves the integrity and stability of the middle layer assembly.

[0042] The slide bar 4 is provided with a plurality of protrusions 11 which are adapted to and snapped into the mounting groove 2. The side of the slide bar 4 is provided with a plurality of protrusions 11, which increase the friction between the slide bar 4 and the mounting groove 2, so that the slide bar 4 can be snapped into the mounting groove 2 more firmly. At the same time, the mounting groove 2 and the slide bar 4 are matched in an interference fit, that is, the size of the slide bar 4 is slightly larger than the size of the mounting groove 2, and a certain amount of pressure needs to be applied during the installation process to make the slide bar 4 completely snap into the mounting groove 2. This matching method further improves the connection strength between the middle layer component and the base 1.

[0043] In order to achieve the connection between two adjacent floors, the two end surfaces of the slide bar 4 are respectively fixedly connected with connecting columns 16, and one end of the connecting column 16 is screwed with a threaded sleeve 17. The opposite sides of the base 1 are respectively provided with a clearance groove 18, and the clearance groove 18 is arranged vertically opposite to the end surface of the installation groove 2. When connecting adjacent floors, the threaded sleeve 17 is screwed onto the connecting column 16, and the tool is inserted under the threaded sleeve 17 by using the clearance groove 18 for screwing. Through the screwing fixation method of the threaded sleeve 17, a stable connection between adjacent floors is achieved.

[0044] The receiving assembly is used for people to use and step on. The receiving assembly includes a support plate 5 and an anti-slip member. The support plate 5 is divided into a two-layer structure. The bottom layer is a PVC layer with good supporting force and wear resistance; the top layer is covered with a UV layer or a PU layer to improve the foot feel and comfort when stepping on it. The bottom surface of the support plate 5 is slidably connected to a plurality of anti-slip members, and the bottom surface of the anti-slip member is fixedly connected to the top surface of the metal plate 3.

[0045] The anti-skid part includes a supporting block 12 and an arc-shaped rubber bowl 13. The supporting block 12 is made of elastic rubber material and has good buffering performance. The top surface of the supporting block 12 is provided with a rubber bowl 13, and an anti-skid column 14 is provided in the rubber bowl 13. The top of the anti-skid column 14 passes through the support plate 5 and is slidably connected to the support plate 5, and the outer side of the bottom end is provided with a connecting sleeve 15. The peripheral side of the connecting sleeve 15 is fixedly connected to the inner wall of the rubber bowl 13, and the bottom surface of the anti-skid column 14 is detachably connected to the bottom surface of the inner cavity of the rubber bowl 13.

[0046] During use, when a person steps on the support plate 5 with high intensity, the support block 12 will be deformed by the pressure, thus buffering the pressure of the stepping. As the pressure increases, the support plate 5 will drop a certain distance, so that the anti-skid column 14 protrudes from the top surface of the support plate 5 and contacts the sole of the person's foot. The design of the anti-skid column 14 increases the friction between the sole of the foot and the support plate 5, thereby improving the safety during exercise. At the same time, the anti-skid column 14 can move downward by friction with the support plate 5 when being stepped on, and further buffer and offset the stepping force through the deformation of the rubber bowl 13 and the connecting sleeve 15. This can not only increase the friction of the sole of the foot, but also avoid the discomfort caused by excessive contact with the sole of the foot.

[0047] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A puncture-resistant high-friction sports floor, characterized in that: include: The base (1) is used to withstand being stepped on by the top surface of the floor and to increase elasticity; a plurality of mounting grooves (2) are provided on the top surface of the base (1), and adjacent mounting grooves (2) are arranged in parallel; A fixing component, used for firmly connecting the base (1) to the ground; the top of the fixing component is fixedly connected to the bottom surface of the base (1); the bottom of the fixing component is embedded and installed in the ground; A middle layer component is used to match with the base (1) and increase the overall strength of the floor; the middle layer component comprises a metal plate (3) and a slide bar (4); the bottom surface of the metal plate (3) is fixedly connected to the top surface of the slide bar (4); the slide bar (4) is provided with a plurality of slide bars (4); the slide bar (4) is matched with and clamped to the installation groove (2); A receiving assembly is used for people to use and step on; the receiving assembly comprises a support plate (5), the support plate (5) is slidably connected to a plurality of anti-slip parts, and the bottom surface of the anti-slip parts is fixedly connected to the top surface of the metal plate (3).

2. The puncture-resistant high-friction sports floor according to claim 1, characterized in that: The fixing assembly comprises a sleeve (6), the ground is provided with a plurality of fixing holes, the sleeve (6) is adapted to and slidably connected to the fixing holes; a rubber sleeve (7) is fixedly connected to the inner wall of the sleeve (6), an expansion core (8) is slidably connected to the inner wall of the rubber sleeve (7), and the top end of the expansion core (8) is fixedly connected to the bottom surface of the base (1).

3. The puncture-resistant high-friction sports floor according to claim 2, characterized in that: The side wall of the sleeve (6) is provided with a plurality of hinge grooves (9), an anti-pullout block (10) is hingedly connected in the hinge groove (9), the bottom end of the anti-pullout block (10) is hingedly connected to the hinge groove (9), and a chamfer is provided on a side of the anti-pullout block (10) close to the rubber sleeve (7), and the top end of the chamfer is inclined toward the rubber sleeve (7).

4. The puncture-resistant high-friction sports floor according to claim 1, characterized in that: A plurality of protrusions (11) are provided on the side surface of the slide bar (4), and the mounting groove (2) and the slide bar (4) are fitted in an interference fit.

5. The puncture-resistant high-friction sports floor according to claim 1, characterized in that: The anti-skid component comprises a supporting block (12), the top surface of the supporting block (12) abuts against an arc-shaped rubber bowl (13), an anti-skid column (14) is arranged inside the rubber bowl (13), the top end of the anti-skid column (14) passes through the support plate (5) and is slidably connected to the support plate (5), a connecting sleeve (15) is sleeved on the outer side of the bottom end of the anti-skid column (14), the peripheral side of the connecting sleeve (15) is fixedly connected to the inner wall of the rubber bowl (13), and the bottom surface of the anti-skid column (14) is detachably connected to the bottom surface of the inner cavity of the rubber bowl (13).

6. The puncture-resistant high-friction sports floor according to claim 1, characterized in that: The two end surfaces of the slide bar (4) are respectively fixedly connected with connecting columns (16), and one end of the connecting column (16) is screwed with a threaded sleeve (17); the opposite side surfaces of the base (1) are respectively provided with a clearance groove (18), and the clearance groove (18) is arranged vertically opposite to the end surface of the installation groove (2).

7. The puncture-resistant high-friction sports floor according to claim 1, characterized in that: The metal plate (3) is an aluminum alloy profile, and the metal plate (3) and the slide bar (4) are integrally formed.

8. The puncture-resistant high-friction sports floor according to claim 1, characterized in that: The base (1) is divided into two layers, the bottom layer is made of rubber material or high-density polyethylene material, and the top layer is made of foamed PVC material or polyurethane foam material, the density of the top layer is 300-500kg / m³, and a plurality of layers of curtain mesh are embedded inside the base (1); the plurality of curtain meshes are arranged parallel to the side of the base (1).

9. The puncture-resistant high-friction sports floor according to claim 1, characterized in that: The support plate (5) is divided into two layers, the bottom layer is a PVC layer, and the top layer is covered with a UV layer or a PU layer.

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