High and low temperature resistant PVC (polyvinyl chloride) plastic particles

Abstract

The utility model discloses a high and low temperature resistant PVC (polyvinyl chloride) plastic particle, and relates to the field of PVC plastic particles. The PVC plastic particle comprises a plastic inner core and a PVC shell, outer coating layers are arranged on the outer side of the PVC shell, the outer coating layers are used for providing wear resistance and high and low temperature resistance of PVC plastic particles, and the outer coating layers are in two but not limited to two material expression forms. According to the multi-layer co-extrusion plastic extruder head, tight combination and overall stability of all layers are ensured, synchronous extrusion can be carried out by utilizing an existing multi-layer co-extrusion technology based on the structure, and the multi-layer co-extrusion technology is an advanced plastic processing technology and allows plastic melts made of different materials to be extruded in the same extruder head at the same time; in the production process, the plastic inner core, the PVC shell, the outer coating and other structures made of different materials can be extruded out at the same time with the same circle center, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of PVC plastic particles, in particular to high and low temperature resistant PVC plastic particles. Background Art

[0002] In the construction of plastic tracks, PVC plastic particles are laid on the base ground through a specific construction process to form a uniform, elastic track surface. This track surface has good anti-slip properties, which can reduce the risk of athletes slipping during running. At the same time, the elasticity and wear resistance of the plastic particles can effectively cushion the impact of athletes' footsteps and protect athletes' joints and bodies.

[0003] After searching, we found a utility model patent with application number 202123290262.0. The patent is named "A kind of PVC plastic particles resistant to high and low temperatures". This patent significantly improves the tolerance of PVC plastic particles to extreme temperatures by adding a coating layer of silicone rubber material. However, its coating layer adopts a full-inclusive structure. This design usually requires an external application process to complete the processing, which undoubtedly increases the complexity of the operation, especially in application scenarios such as the laying of plastic tracks. This processing method will bring a large amount of engineering, which not only increases production costs, but also reduces production efficiency. Therefore, the design of this patent does not fully meet the needs of current plastic particle processing technology, and there is an urgent need to improve the structure of PVC plastic particles. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a high and low temperature resistant PVC plastic particles to solve the problem that the coating layer structure is a fully inclusive structure and can usually only be processed by external application technology. Faced with the purpose of laying plastic tracks, this is undoubtedly a problem of large engineering workload, which in turn causes technical problems such as high production costs.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high and low temperature resistant PVC plastic particle, comprising a plastic inner core and a PVC shell, an outer coating layer is arranged on the outer side of the PVC shell, the outer coating layer is used to provide the PVC plastic particles with wear resistance and high and low temperature resistance, the outer coating layer is in two but not limited to two material forms.

[0006] By adopting the above technical solution, the cross-sectional consistency of the plastic particles provides a basis for achieving efficient production, so that the particles can maintain a stable shape during the extrusion process, and each layer of the structure fits tightly and is not prone to stratification or deformation. Therefore, the existing multi-layer co-extrusion technology can be used for synchronous extrusion, which greatly improves production efficiency. This technology can simultaneously process structural layers of different materials and tightly combine them into a whole, thereby simplifying the production process.

[0007] Furthermore, a mounting hole is provided at the central axis of the PVC shell, and the mounting hole is adapted to the plastic inner core.

[0008] By adopting the above technical solution, the design of opening a mounting hole at the central axis of the PVC shell enables the plastic core to be firmly installed in the shell. The matching of the mounting hole and the plastic core ensures that the two are tightly combined and are not prone to loosening or falling off.

[0009] Furthermore, a plurality of protrusions are provided on the outer surface of the PVC shell and are arranged in an equidistant ring shape along the central axis of the PVC shell.

[0010] By adopting the above technical solution, the convex block design on the outer surface of the PVC shell increases the surface area of ​​the shell, which helps to improve the bonding strength between the particles and the outer coating, making it more stable in applications such as plastic tracks.

[0011] Furthermore, a plurality of grooves are formed on the inner side of the outer coating layer, and the protrusions are engaged with the grooves.

[0012] By adopting the above technical solution, the grooves on the inner side of the outer coating layer are engaged with the protrusions on the outer surface of the PVC shell, thereby enhancing the bonding force between the outer coating layer and the PVC shell, so that the two form a tight whole.

[0013] Furthermore, a plurality of friction blocks are arranged on the outer side of the outer coating layer.

[0014] By adopting the above technical solution, the multiple friction blocks arranged on the outside of the outer coating layer significantly increase the friction coefficient of the plastic particles, so that the plastic particles can provide better anti-slip performance when laid into a runway or other surfaces, reducing the risk of people slipping when walking or engaging in sports activities on it, thereby enhancing safety.

[0015] Furthermore, the material of the outer coating layer is thermoplastic elastomer.

[0016] By adopting the above technical solution and selecting thermoplastic elastomer as the material of the outer coating layer, the plastic particles can be given good elasticity and flexibility. This elastomer material can stretch and recover to a certain extent, so that the plastic particles can better adapt to various deformations and improve their service life.

[0017] Furthermore, the outer coating layer is made of polyurethane.

[0018] By adopting the above technical solution, polyurethane as the material of the outer coating layer has excellent wear resistance, which means that the plastic particles using polyurethane can maintain a longer service life when facing frequent friction and impact.

[0019] Furthermore, the outer coating layer is made of synthetic rubber.

[0020] By adopting the above technical solution, the synthetic rubber used as the material of the outer coating layer has good elasticity and wear resistance, which can effectively resist external pressure and friction and extend the service life of the plastic particles.

[0021] In summary, the utility model mainly has the following beneficial effects:

[0022] 1. The utility model ensures the close combination and overall stability of the layers through the plastic inner core, PVC shell and outer coating. In order to further enhance the structural strength of the plastic particles, the unique structures such as convex blocks, grooves and friction blocks are specially designed, which not only improves the durability of the particles, but also makes the cross-section of the plastic particles consistent, which is convenient for subsequent processing and application. Based on this structure, the existing multi-layer co-extrusion technology can be used for synchronous extrusion. The multi-layer co-extrusion technology is an advanced plastic processing technology, which allows plastic melts of different materials to be extruded simultaneously in the same extruder head, thereby forming composite particles with a multi-layer structure. In the production process, structures of different materials such as the plastic inner core, PVC shell and outer coating can be extruded at the same time and with the same center of the circle, which greatly improves the production efficiency;

[0023] 2. The utility model can significantly improve the high and low temperature resistance of PVC plastic particles by providing an outer coating layer and using thermoplastic elastomer, polyurethane or synthetic rubber as a replaceable material for the outer coating layer. These materials can maintain good elasticity and stability under high and low temperature conditions, thereby ensuring that the plastic particles can work normally under various temperature environments. At the same time, these replacement materials also have excellent wear resistance. Compared with traditional silicone rubber materials, they are more resistant to wear and tear and extend the service life of plastic particles. In addition, these new materials are not easy to stick to dirt and absorb dust, which effectively solves the problem of easy sticking to dirt of silicone rubber and improves the cleanliness and use efficiency of plastic particles. Moreover, these materials are also stronger and can provide better support and protection, avoiding the problem of insufficient strength of silicone rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0027] In the figure: 1. Plastic inner core; 2. PVC shell; 3. Outer coating layer; 4. Mounting hole; 5. Bump; 6. Groove; 7. Friction block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0029] The following describes an embodiment of the utility model based on its overall structure.

[0030] Embodiment 1:

[0031] A high and low temperature resistant PVC plastic granule, such as Figure 1-Figure 3 As shown, it includes a plastic core 1 and a PVC shell 2. An outer coating layer 3 is arranged on the outside of the PVC shell 2. The outer coating layer 3 is used to provide the PVC plastic particles with wear resistance and high and low temperature resistance. The outer coating layer 3 is in two but not limited to two material forms. The cross-sectional consistency of the plastic particles provides a basis for achieving efficient production, so that the particles can maintain a stable shape during the extrusion process, and each layer of the structure fits tightly and is not prone to stratification or deformation. Therefore, the existing multi-layer co-extrusion technology can be used for synchronous extrusion, which greatly improves the production efficiency. This technology can simultaneously process structural layers of different materials and tightly combine them into a whole, thereby simplifying the production process. At the same time, the cross-sectional consistency also facilitates the subsequent cutting process. The particle cutting machine can accurately cut the extruded multi-layer structure to ensure that the size and shape of each particle meet the expected requirements. This efficient and precise cutting method further improves the production efficiency of PVC plastic particles and reduces the scrap rate.

[0032] See also Figure 1 , Figure 2 , Figure 3 A mounting hole 4 is provided at the central axis of the PVC shell 2, and the mounting hole 4 is adapted to the plastic inner core 1. The design of providing the mounting hole 4 at the central axis of the PVC shell 2 enables the plastic inner core 1 to be firmly installed in the shell. The adaptation of the mounting hole 4 to the plastic inner core 1 ensures the close combination of the two, and it is not easy to loosen or fall off. At the same time, it also enhances the overall structural strength of the plastic particles. The plastic inner core 1 is closely combined with the PVC shell 2 through the mounting hole 4 to form a solid whole, which can withstand greater external force and pressure, thereby improving the service life and stability of the plastic particles. This structure also enables the plastic particles to better play their functions in applications and meet various usage requirements.

[0033] See also Figure 1 , Figure 2 , Figure 3The outer surface of the PVC shell 2 is provided with a plurality of protrusions 5, and they are arranged in an equidistant ring along the central axis of the PVC shell 2. The protrusion 5 design on the outer surface of the PVC shell 2 increases the surface area of ​​the shell, which helps to improve the bonding force between the particles and the outer coating 3, making it more stable in applications such as plastic tracks. At the same time, the protrusions 5 are arranged in an equidistant ring along the central axis of the PVC shell 2, ensuring the structural uniformity and stability of the particles. This layout also helps to maintain the regular shape of the particles during extrusion and cutting, thereby improving production efficiency and product quality.

[0034] See also Figure 1 , Figure 2 , Figure 3 A plurality of grooves 6 are provided on the inner side of the outer coating layer 3, and the protrusions 5 are engaged with the grooves 6. The grooves 6 on the inner side of the outer coating layer 3 are engaged with the protrusions 5 on the outer surface of the PVC shell 2, thereby enhancing the bonding force between the outer coating layer 3 and the PVC shell 2, so that the two form a tight whole. At the same time, the engaging structure of the protrusions 5 and the grooves 6 also improves the structural stability of the plastic particles, preventing the outer coating layer 3 from falling off or shifting during use, thereby ensuring the reliability and durability of the plastic particles during use.

[0035] See also Figure 1 , Figure 2 , Figure 3 A plurality of friction blocks 7 are arranged on the outside of the outer coating layer 3. The plurality of friction blocks 7 arranged on the outside of the outer coating layer 3 significantly increase the friction coefficient of the plastic particles, so that the plastic particles can provide better anti-slip performance when laid into a runway or other surfaces, reducing the risk of people slipping when walking or doing sports activities on it, thereby enhancing safety. At the same time, the structure of the friction blocks 7 can increase the contact area with the external colloid medium, thereby enhancing the stability of the laying structure of the plastic particles.

[0036] Embodiment 2:

[0037] See also Figure 1 , Figure 2 , Figure 3 The material of the outer coating layer 3 is thermoplastic elastomer. Choosing thermoplastic elastomer as the material of the outer coating layer 3 can give the plastic particles good elasticity and flexibility. This elastomer material can stretch and recover to a certain extent, so that the plastic particles can better adapt to various deformations and improve the service life. At the same time, the thermoplastic elastomer material also has good wear resistance and weather resistance, and can maintain stable performance in different environments. This means that the plastic particles can maintain a longer service life and appearance quality when facing daily use and various climatic conditions, reducing the frequency of maintenance and replacement.

[0038] See also Figure 1 , Figure 2 , Figure 3The material of the outer coating layer 3 is polyurethane. Polyurethane as the material of the outer coating layer 3 has excellent wear resistance, which means that the plastic particles using polyurethane can maintain a longer service life when facing frequent friction and impact. At the same time, polyurethane also has good high and low temperature resistance, so that the plastic particles can still maintain stable performance under extreme temperature conditions and are not easily damaged by temperature changes, thereby ensuring the reliability and durability of the plastic particles in various environments.

[0039] See also Figure 1 , Figure 2 , Figure 3 The material of the outer coating layer 3 is synthetic rubber. As the material of the outer coating layer 3, synthetic rubber has good elasticity and wear resistance, which can effectively resist external pressure and friction and extend the service life of the plastic particles. At the same time, synthetic rubber also has excellent weather resistance and chemical corrosion resistance, which enables the plastic particles to maintain stable performance under various harsh environmental conditions, and is not easily corroded by the natural environment and chemical substances, thereby enhancing the durability and reliability of the plastic particles.

[0040] The implementation principle of the utility model is as follows: first, the plastic inner core 1, the PVC shell 2, and the outer coating layer 3 are set to a coaxial structure, and structures such as a convex block 5, a groove 6 and a friction block 7 are set to enhance the structural strength of the plastic particles while making the cross section of the plastic particles consistent. According to this structure, the multi-layer co-extrusion technology in the existing process can be used for synchronous extrusion. After that, the particle cutting machine is used for cutting to complete the production operation of the PVC plastic particles, thereby improving the production convenience of the PVC plastic particles and reducing the production cost. In the extrusion operation, multiple layers of PVC particles with different material structures and the same center can be realized. This is mainly due to the multi-layer co-extrusion technology in modern plastic processing technology. Through this technology, plastic melts of different materials can be extruded simultaneously in the same extruder head to form composite particles with a multi-layer structure;

[0041] Specifically, multi-layer co-extrusion technology uses several extruders to supply different molten material streams respectively. These material streams converge in a specially designed compounding head and are then extruded together to form multi-layer composite sheets or particles. The key to this technology is to precisely control the temperature, pressure and flow rate of each layer of plastic to ensure that the layers are tightly combined while maintaining the required material structure and performance.

[0042] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0043] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A high and low temperature resistant PVC plastic granule, characterized by: The invention comprises a plastic inner core (1) and a PVC shell (2). An outer coating layer (3) is arranged on the outer side of the PVC shell (2). The outer coating layer (3) is used to provide the PVC plastic particles with wear resistance and high and low temperature resistance. The outer coating layer (3) is in two but not limited to two material forms.

2. The high and low temperature resistant PVC plastic particles according to claim 1, characterized in that: A mounting hole (4) is provided at the central axis of the PVC shell (2), and the mounting hole (4) is compatible with the plastic inner core (1).

3. The high and low temperature resistant PVC plastic particles according to claim 1, characterized in that: The outer surface of the PVC shell (2) is provided with a plurality of protrusions (5), which are arranged in an equidistant ring shape along the central axis of the PVC shell (2).

4. The high and low temperature resistant PVC plastic particles according to claim 3, characterized in that: A plurality of grooves (6) are provided on the inner side of the outer coating layer (3), and the protrusions (5) are engaged with the grooves (6).

5. The high and low temperature resistant PVC plastic particles according to claim 1, characterized in that: A plurality of friction blocks (7) are arranged on the outer side of the outer coating layer (3).

6. The high and low temperature resistant PVC plastic particles according to claim 1, characterized in that: The material of the outer coating layer (3) is thermoplastic elastomer.

7. The high and low temperature resistant PVC plastic particles according to claim 1, characterized in that: The material of the outer coating layer (3) is polyurethane.

8. The high and low temperature resistant PVC plastic particles according to claim 1, characterized in that: The material of the outer coating layer (3) is synthetic rubber.

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