CN113026477A

CN113026477A - PU track laying method and particle elastic layer used for PU track

Info

Publication number: CN113026477A
Application number: CN201911346315.0A
Authority: CN
Inventors: 林世峯
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2021-06-25

Abstract

The invention provides a PU runway paving method and a granular elastic layer used for the PU runway, wherein the PU runway paving method sequentially paves a macadam gradation, 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; the granular elastic layer used for the PU runway comprises: the fine mesh substrate is characterized in that at least one surface of the fine mesh substrate is fixedly paved with a plurality of elastic particles (such as EPU polyurethane foaming particles) by taking an adhesive or an adhesive layer as a medium, and the PU track is paved by the improved particle elastic layer, so that the construction is easier, and the material and the construction cost are saved.

Description

PU track laying method and particle elastic layer used for PU track

Technical Field

The invention relates to a granular elastic layer structure for a PU track laid on a sports ground.

Background

When a general PU track on a sports ground is constructed, most PU tracks on the sports ground are paved on the bottommost layer of the track by using broken stone grading as a substrate, a layer of coarse asphalt is paved on the track after the broken stone grading is compacted, a layer of fine asphalt is paved, a layer of PU elastic base material is paved after the fine asphalt is dried, an elastic layer is paved on the PU elastic base material, and a PU elastic surface layer is coated on the top after the elastic layer is paved, so that a seamless elastic and colorful elastic PU track structure is formed.

The elastic layer is the light particle (similar Styrofoam granule) of foaming granule such as EPP, EPE, consequently, in the practice when laying the elastic layer, because the runway area of construction is very big and the place is spacious, often there is not the shelter from the wind around, cause constructor to when laying granule such as EPP, EPE above the runway, as long as the light wind blows just can blow away the granule from the runway of laying and lead to the full day dancing, let runway constructor very puzzlement, the staff must consume a large amount of manpowers and instrument and retrieve the granule of being blown away, the human cost of carrying out the operation has also been increased.

Disclosure of Invention

The invention aims to solve the defects and troubles of the conventional PU track structure in laying an elastic layer.

The invention provides a particle elastic layer structure for a PU track, which comprises: a substrate, at least one side of which is coated with an adhesive or a glue layer as a medium; and a plurality of elastic particles (such as EPU polyurethane foaming particles) combined on at least one surface layer of the substrate.

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

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

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

Preferably, the surface layer of the elastic particle can be sprayed with an adhesive, so that the entire elastic particle layer has the aggregate characteristic and the supporting force of the elastic particle layer can be enhanced.

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

A PU runway laying method is characterized by comprising the following steps:

paving a crushed stone gradation;

paving coarse asphalt on the crushed stone gradation;

paving fine asphalt on the coarse asphalt;

paving a PU elastic material on the fine asphalt;

paving the granular elastic layer structure used for the PU track on the PU elastic material; and

and a PU elastic surface layer is laid on the granular elastic layer.

The particle elastic layer can be laid on a fine mesh base material or a plane base material in advance in a factory, and is wound into a bundle and then transported to a construction site, when the particle elastic layer is laid on the PU elastic base material, the elastic particles can be laid on the PU elastic base material only by spreading the bundle of base material on the PU elastic base material, and the elastic particle layer is fixed on the base material, so that the light elastic particles cannot fly around even if strong wind blows up the construction site, the past trouble of runway constructors is reduced, and the labor cost for construction is also reduced.

Drawings

FIG. 1 is a partial plan cross-sectional view of an embodiment showing the application of a granular elastic layer of the present invention to a PU track structure;

FIG. 2 is an exploded perspective view of an embodiment of the present invention showing the relationship of the substrate and the resilient particle combination of a fine mesh grid of a particulate resilient layer;

FIG. 3 is a perspective view of an embodiment of the particulate elastic layer of the present invention after applying elastic particles to a fine mesh substrate and then applying an adhesive to the elastic particles;

FIG. 4 is a perspective view of an embodiment of the particulate elastic layer of the present invention with elastic particles disposed on opposite sides of a fine mesh substrate;

FIG. 5 is an exploded perspective view of an embodiment of the present invention showing the relationship of the planar substrate of the particulate elastic layer to the combination of elastic particles; and

fig. 6 is a perspective view showing an example of a state in which the granular elastic layer of the present invention is wound into a bundle.

Description of reference numerals: 1-crushed stone grading; 2-coarse pitch; 3-fine pitch; 4-PU elastic base material; 5-a particulate elastic layer; 51-fine mesh grid substrate; 510-an adhesive layer; 52-elastomeric particles; 6-PU elastic surface layer; 7-a spray gun; 71 an adhesive; 8 plane substrate.

Detailed Description

The following embodiments of the present invention will be described in detail with reference to the drawings and reference signs, so that those skilled in the art can implement the invention after reading the description.

As shown in fig. 1, when a PU track for a sports ground is laid, a stone composition 1 is first laid on a construction site as a base of the track, and the stone composition 1 is composed of a plurality of stones with appropriate sizes; then laying coarse asphalt 2 above the crushed stone gradation 1, wherein the coarse asphalt 2 is coarse asphalt generated in the final process of petroleum refining; then laying fine asphalt 3 on the coarse asphalt 2, wherein the fine asphalt 3 is finer asphalt relative to the coarse asphalt 2; then, a PU elastic material 4 is laid above the fine pitch 3; then, a particle elastic layer 5 is laid on the PU elastic material 4, wherein the particle elastic layer 5 comprises a plurality of light foaming particles 52 for absorbing and buffering the downward acting force of the runway; finally, a PU elastic surface layer 6 is laid on the particle elastic layer 5 to form a complete PU runway.

FIGS. 2 and 3 show the structure and manner of fabrication of the granular elastic layer 5 of the present invention; the granular elastic layer 5 comprises a fine mesh substrate 51 with aggregate characteristics, the fine mesh substrate 51 is preferably made of glass fiber fine mesh cloth, an adhesive layer 510 can be coated on one surface of the fine mesh substrate 51, then a plurality of elastic granules 52 are adhered and fixed on the adhesive layer 510, an adhesive 71 is sprayed on the surface layer of the elastic granules 52 by a spray gun 7, so that the elastic granules 52 have better adhesion, or the adhesive layer 510 is not coated, the elastic granules 52 are directly laid on the fine mesh substrate 51, and then the adhesive 71 is sprayed on the surface layer of the elastic granules 52. Preferably, EPU (polyurethane) foam particles are used as the elastic particles 52.

As shown in fig. 3, in order to make the elastic particles 52 on the fine mesh substrate 51 have better firmness, the present invention may further lay the elastic particles 52 on the fine mesh substrate 51, spray the adhesive 71 on the surface layer of the elastic particles 52 from above by the spray gun 7, and bond each elastic particle 52 and the fine mesh substrate 51 together after the adhesive 71 is dried, so as to make the elastic particles 52 firmer.

In addition, since different tracks may have different elasticity requirements, the present invention can provide the granular elastic layer 5 with a structure having two layers of elastic granules 52 for a track requiring a better elasticity effect. As shown in fig. 4, the present invention can be applied to a fine mesh substrate 51, wherein the elastic particles 52 are disposed on one surface of the fine mesh substrate 51, and then the elastic particles 52 are bonded to the other opposite surface in the same manner as described above, and an adhesive 71 is sprayed on the surface of the elastic particles 52, so that the elastic particles 52 are disposed on both opposite surfaces of the fine mesh substrate 51; as such, the granular elastic layer 5 having two layers of elastic particles 52 will have a greater thickness than a single layer of elastic particles 52, thereby providing a higher cushioning effect in absorbing elastic forces.

The granular elastic layer 5 of the present invention is manufactured in a factory, and the fine mesh base material 51 to which the elastic particles 52 are bonded is wound into a bundle shape (as shown in fig. 6), and when the runway is to be laid, the bundle of the granular elastic layer 5 is transported to a construction site for construction, and a worker only needs to spread the whole bundle of the granular elastic layer 5 to lay on the runway, so that the lightweight elastic particles do not fly around even if strong wind blows from the construction site, the trouble of the runway constructor is reduced, and the labor cost for construction is also reduced.

As shown in fig. 5, in order to make the material of the particle layer 5 more selective, the invention may also use a plastic non-mesh planar substrate 8 as the particle layer 5, that is, an adhesive layer 810 may be coated on the surface of the planar substrate 8, and then a plurality of elastic particles 52 may be adhered and fixed on the adhesive layer 810, or an adhesive 71 may be sprayed on the surface layer of the elastic particles 52 to firmly bond each elastic particle 52.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A granular elastic layer structure for use in a PU racetrack, comprising:

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, which are combined with the adhesive or the adhesive layer on at least one surface of the substrate.

2. A granular elastic layer structure for PU tracks according to claim 1, wherein said substrate is a fine-mesh grid substrate with aggregate characteristics, and at least one side of said fine-mesh grid substrate is coated with said adhesive or glue layer as medium.

3. A granular elastic layer structure for PU tracks according to claim 2, wherein said fine mesh substrate is glass fiber fine mesh cloth.

4. A granular elastic layer structure for PU tracks according to claim 2, wherein said elastic granules are EPU polyurethane foam granules.

5. A granular elastic layer structure for PU tracks according to claim 4, wherein an adhesive is sprayed on said elastic granules.

6. A granular elastic layer structure as claimed in claim 5, wherein said substrate is further provided with said adhesive layer on the opposite surface, and a plurality of other elastic granules are bonded to said adhesive layer, and said adhesive is sprayed on the surface of said plurality of other elastic granules.

7. A PU runway laying method is characterized by comprising the following steps:

paving a crushed stone gradation;

paving coarse asphalt on the crushed stone gradation;

paving fine asphalt on the coarse asphalt;

paving a PU elastic material on the fine asphalt;

laying a granular elastic layer structure for a PU track according to any one of claims 1 to 6 on the PU elastic material; and

and a PU elastic surface layer is laid on the granular elastic layer.