TW202124815A - PU running track laying method and granular elastic layer used in PU running track for enabling the granular elastic layer to have better adhesive and supporting effects - Google Patents

Abstract

Provided is a PU running track laying method for sequentially laying a gravel grading surface, a coarse asphalt, a fine asphalt, a PU elastic material, a granular elastic layer composed of a base material and elastic granules, and a PU elastic surface layer from bottom to top, wherein the granular elastic layer includes a fine-grid substrate or a plastic flat base material with aggregate characteristics. A plurality of elastic granules (such as EPU polyurethane foamed granules) are fixedly laid on at least one side of the fine-grid substrate using a binder or adhesive layer as a medium. With the improved granular elastic layer, it is easier to lay PU running track, and is capable of saving material and construction costs.

Description

PU track laying method and particle elastic layer used in the PU track

The invention relates to a method for laying a PU track for sports fields and a particle elastic layer used for the PU track.

During the construction of the PU runway on the general sports field, most of the bottom layer of the runway is laid with gravel gradation as the base. After the gravel gradation is compacted, a layer of coarse asphalt is laid on the top, and then a layer of fine asphalt is laid. After the fine asphalt is dry, pave a layer of PU elastic substrate, and then pave a layer of elastic layer on top of the PU elastic substrate. After the elastic layer is laid, the top layer is coated with a PU elastic surface layer to form a seamless, elastic and flexible layer. Colorful flexible PU track structure.

The elastic layer is a kind of lightweight particles of EPP, EPE and other foamed particles (similar to styrofoam foamed particles). Therefore, when laying the elastic layer in practice, because the area of the runway under construction is very large and the site is empty, there is often no surrounding area. The shelter keeps the wind out, so that when the construction workers lay EPP, EPE and other particles on the top of the runway, as long as the light breeze blows, the particles will be blown away from the paved runway, causing the sky to fly. The manpower and tools to recover the blown off particles also increase the labor cost.

The purpose of the present invention is to solve the shortcomings and problems of the conventional PU racetrack structure when laying the particle elastic layer.

The granular elastic layer for PU racetracks provided by the present invention includes: a substrate, At least one side of the substrate is coated with an adhesive or adhesive layer as a medium; and a plurality of elastic particles (such as EPU polyurethane foamed particles) are bonded to at least one surface layer of the substrate.

Preferably, the substrate may be a glass fiber fine mesh cloth, so that the substrate has a better firm effect when the elastic particles are combined with the adhesive or adhesive layer.

Preferably, the substrate may be a flat substrate made of plastic material, which has an excellent adhesion effect when an adhesive layer is used to bind elastic particles.

Preferably, the elastic particles may be EPU polyurethane foamed particles, so that the elastic particles have better elasticity and light weight.

Preferably, the surface layer of the elastic particles can be sprayed with an adhesive, so that the entire elastic particle layer has the characteristics of bone material, which can enhance the supporting force of the elastic particle layer.

In another embodiment, a plurality of other elastic particles may be bonded to the opposite surface of the fine-mesh mesh substrate, and an adhesive may be sprayed on the surface layer of the plurality of elastic particles.

The PU track laying method provided by the present invention includes: laying a gravel gradation; laying a coarse asphalt on the gravel gradation; laying a fine asphalt on the coarse asphalt; laying on the fine asphalt A PU elastic material; laying a particle elastic layer on the PU elastic material; and laying a PU elastic surface layer on the particle elastic layer; wherein the particle elastic layer is composed of a substrate and a plurality of elastic particles, the substrate It is a fine-mesh mesh substrate with aggregate characteristics or a plastic flat substrate. At least one side of the substrate is fixedly laid and combined with a plurality of elastic particles with an adhesive or adhesive layer as a medium.

The aforementioned particle elastic layer of the present invention can be pre-laid on the fine-mesh grid base material or flat base material in the factory, and then transported to the construction site after being wound into a bundle. When laying the elastic particle layer on top of the material, as long as the bundled substrate is spread on the PU elastic substrate, the elastic particles can be laid on the PU elastic substrate, and since the elastic particle layer is fixed on the substrate, Therefore, even if strong wind blows on the construction site, it will not cause lightweight elastic particles. The particles fly everywhere, reducing the troubles of the runway construction personnel in the past, and also reducing the cost of construction labor.

1‧‧‧Gradation of gravel

2‧‧‧Coarse asphalt

3‧‧‧Fine Bitumen

4‧‧‧PU elastic substrate

5‧‧‧Granular elastic layer

51‧‧‧Substrate

510‧‧‧Adhesive layer

52‧‧‧Elastic particles

6‧‧‧PU elastic surface layer

7‧‧‧Adhesive spray gun

71‧‧‧Adhesive

8‧‧‧Plane substrate

The first figure is a partial plane cross-sectional view showing an embodiment of the particle elastic layer of the present invention applied to the PU racetrack structure;

The second figure is a three-dimensional exploded view showing the combination relationship between the base material of the granular elastic layer fine mesh and the elastic particles of the present invention;

The third figure is a three-dimensional view showing an embodiment of the elastic particles of the present invention after the elastic particles are laid on the fine mesh substrate, and then the adhesive is applied on the elastic particles;

The fourth figure is a perspective view showing an embodiment of the particle elastic layer of the present invention in which elastic particles are laid on opposite sides of a fine mesh substrate;

The fifth figure is a three-dimensional exploded view of an embodiment showing the combination relationship between the planar substrate of the granular elastic layer and the elastic particles of the present invention; and

The sixth figure is a perspective view of an embodiment showing the state of the elastic granular layer of the present invention after being wound into a bundle.

The following describes the implementation of the present invention in more detail with the drawings and component symbols, so that those who are familiar with the art can implement it after reading this specification.

As shown in the first figure, when laying the PU track of the sports field, the gravel gradation 1 is first laid on the construction site as the base of the runway. The gravel gradation 1 is composed of a plurality of crushed stones of appropriate size; Coarse asphalt 2 is laid on top of the gravel gradation 1. The coarse asphalt 2 is the coarser asphalt produced in the final process of petroleum refining; then the fine asphalt 3 is laid on the coarse asphalt 2. Asphalt 3 is a finer asphalt than coarse asphalt 2; and then on fine asphalt 3 Pave the PU elastic material 4; then pave the particle elastic layer 5 of the present invention on top of the PU elastic material 4. The particle elastic layer 5 contains a plurality of lightweight foamed particles 52 to provide absorption and cushioning the track down Finally, the PU elastic surface layer 6 is laid on the granular elastic layer 5 to form a complete PU track.

The second and third figures show the structure and manufacturing method of the granular elastic layer 5 of the present invention; wherein, the granular elastic layer 5 includes a fine mesh base material 51 with aggregate characteristics, and the fine mesh base material 51 is more It is preferably made of glass fiber fine mesh cloth, and an adhesive layer 510 can be coated on one surface of the fine mesh substrate 51, and then a large number of elastic particles 52 are glued and fixed on the adhesive layer 510. The adhesive 71 is sprayed on the surface layer of the elastic particles 52 with the spray gun 7 to make the elastic particles 52 have a better effect. It is also possible to directly lay the elastic particles 52 on the fine mesh substrate 51 without first coating the adhesive layer 510. , And then spray the adhesive 71 on the surface of the elastic particles 52. Preferably, the elastic particles 52 can use EPU (polyurethane) foamed particles.

As shown in the third figure, in order to make the elastic particles 52 on the fine mesh substrate 51 have better firmness, the present invention can also lay the elastic particles 52 on the fine mesh substrate 51, and then use the spray gun 7 to remove the elastic particles 52. The adhesive 71 is sprayed on the surface layer of the elastic particles 52 from above, and after the adhesive 71 is dried, the elastic particles 52 and the fine mesh substrate 51 are combined together, thereby being stronger.

In addition, since different racetracks may have indispensable elasticity requirements, the present invention can configure the particle elastic layer 5 to have a structure of two layers of elastic particles 52 in response to a racetrack that requires a better elastic effect. As shown in the fourth figure, the present invention can arrange the elastic particles 52 on one side of the fine mesh substrate 51 in the aforementioned manner, and then combine the elastic particles 52 on the opposite side in the same manner as described above, and in the same manner, the elastic particles 52 The adhesive 71 is sprayed on the surface of the mesh substrate 51 so that the opposite sides of the fine mesh substrate 51 have elastic particles 52; in this way, the particle elastic layer 5 with two layers of elastic particles 52 will have a larger size than the single layer of elastic particles 52. Thickness, which provides a higher cushioning effect of absorbing elasticity.

The aforementioned particle elastic layer 5 of the present invention is all manufactured in a factory, and the fine mesh base material 51 to which the elastic particles 52 have been combined is wound into a bundle (as shown in the sixth figure), and when the track is to be laid Bundles of granular elastic layer 5 are transported to the construction site for construction. The staff only need to unfold the whole bundle of granular elastic layer 5 and lay it on the runway. Even if strong wind blows on the construction site, it will not cause lightweight elastic particles everywhere. Random flying reduces the troubles of runway construction personnel and also reduces construction labor costs.

As shown in the fifth figure, in order to have more choices for the material of the granular layer 5, the present invention can also use a plastic material non-meshed flat substrate 8 in the granular layer 5, that is, it can be applied to the flat base first. The surface of the material 8 is coated with an adhesive layer 810, and then a plurality of elastic particles 52 are adhered and fixed on the adhesive layer 810. An adhesive 71 can also be sprayed on the surface of the elastic particles 52 to bond the elastic particles 52 firmly. .

The above descriptions are only used to explain the preferred embodiments of the present invention, and are not intended to restrict the present invention in any form. Therefore, any modification or change related to the present invention is made under the same creative spirit. , Should still be included in the scope of the present invention's intended protection.

1‧‧‧Gradation of gravel

2‧‧‧Coarse asphalt

3‧‧‧Fine Bitumen

4‧‧‧PU elastic substrate

5‧‧‧Granular elastic layer

6‧‧‧PU elastic surface layer

Claims (7)

A granular elastic layer for PU runways, including: A substrate, at least one side of which is coated with an adhesive or an adhesive layer as a medium; and A plurality of elastic particles are combined with the adhesive or the adhesive layer on at least one surface of the substrate. The granular elastic layer for PU racetracks described in the first item of the scope of patent application, wherein the substrate is a fine mesh substrate with aggregate characteristics, and at least one side of the fine mesh substrate is coated with the adhesive Or the adhesive layer is used as a medium. As described in item 2 of the scope of patent application, the particle elastic layer for PU racetracks, wherein the fine mesh substrate is glass fiber fine mesh cloth. As described in item 2 of the scope of the patent application, the elastic layer of particles used for PU racetracks, wherein the elastic particles are EPU polyurethane foamed particles. As described in item 4 of the scope of patent application, the particle elastic layer for PU racetracks, wherein an adhesive is further sprayed on the elastic particles. As described in item 5 of the scope of the patent application, the particle elastic layer for PU racetracks, wherein the opposite surface of the substrate is further provided with the adhesive layer, and the adhesive layer is combined with other elastic layers Particles, and spray the adhesive on the surface of the plurality of elastic particles on the other side. A method for laying a PU runway, including: Laying a gravel gradation; Pave a coarse asphalt on the gravel gradation; Pave a fine asphalt on the coarse asphalt; Pave a PU elastic material on the fine asphalt; Laying a granular elastic layer as described in any one of items 1 to 6 of the scope of patent application on the PU elastic material; and A PU elastic surface layer is laid on the particle elastic layer.

Images