KR102268606B1 - The combined turf mat made of pe uni-material and construction method using the same - Google Patents

Abstract

The present invention relates to a composite turf mat invented to solve issues of an existing artificial turf mat formed of different kinds of materials causing difficulty in recycling and product management, and a composite turf mat construction method capable of enabling artificial turf and natural turf to be placed together by forming a growth environment for the natural turf during the construction of the composite turf mat. The composite turf mat made of a PE-based uni-material does not produce industrial wastes after removal, can have an effect of making recycling and product management convenient, can improve a pulling force and durability, can have excellence in air-permeability, a drainage property and a cushioning sensation, and can form a natural turf vegetation environment due to construction using sweet potato starch instead of using a filling material made of synthetic resin, thereby improving the aesthetics and cushioning sensation.

Description

A composite lawn mat made of PE-based uni material and its construction method {THE COMBINED TURF MAT MADE OF PE UNI-MATERIAL AND CONSTRUCTION METHOD USING THE SAME}

The present invention is a composite turf mat invented to solve the problems of artificial turf mats composed of heterogeneous materials, which are difficult to recycle and product management, and artificial turf and natural turf by creating a growth environment for natural turf when constructing the composite turf mat. It relates to a method for constructing a composite lawn mat that can be provided together, and through the composite lawn mat made of PE-based uni material, industrial waste is not generated after demolition, and recycling and product management are easy, and the pulling power and durability are improved. It has a double cell structure, so it has excellent breathability, drainage, and cushioning, and it is possible to create a vegetation environment of natural grass by using sweet potato starch instead of a synthetic resin filler, and through this, cushioning and aesthetics are improved. It relates to a composite lawn mat made of an improved PE-based uni-material and a construction method thereof.

In general, natural grass has the advantage of being nature-friendly and good contact, but it is not easy to protect and manage, and it is vulnerable to ground subsidence, so it is impossible to maintain a flat surface uniformly, and the ground in the part where the grass is planted is easily dug, etc. There were difficulties in the management and protection of natural grass.

For this reason, although artificial turf mats in which artificial turf yarn is brushed are frequently used in playgrounds and golf driving ranges, there is a problem in that the natural compatibility is lower than that of natural turf, and the contact feeling is not good.

In addition, in the case of existing artificial turf, various materials such as PP, PE, PU, Nylon, and SBR are complexly composed depending on pile yarn, mat, fabric part, and filler, so an extrusion process is required to recycle it. There is also a problem in that the management of the properties of recycled products is also very difficult, and as a result, most of the waste artificial turf is incinerated, which causes environmental problems.

Meanwhile, in order to reduce environmental problems, eco-friendly artificial turf products that can be recycled are preferred around the world, and the preference for composite turf fused with natural turf is increasing due to the aesthetic and texture of natural turf.

As a prior document related to composite turf, Korean Patent Application Laid-Open No. 10-2011-0060451 discloses a "composite turf structure in which a filler is mixed (hereinafter referred to as Prior Document 1)".

The prior document 1 is the foundation ground; a coating layer to which morphological stability is imparted to the upper portion of the base; Fiber foam on which artificial turf is installed on the coating layer; artificial turf laid on the textile fabric; a clay layer formed on the fiber cloth; and a composite turf comprising natural turf grown by germinating seeds of natural turf in the soil layer. As shown in claim 3, the filler is made of synthetic resin, which is made of polyolefin or polyamide fibers. It still has a problem of being difficult to recycle because it has a heterogeneous composition with the coating layer.

In addition, looking at the construction method of artificial turf, Republic of Korea Patent Publication No. 10-1138004 discloses a "artificial turf construction method (hereinafter referred to as Prior Document 2)".

In the case of Prior Document 2, according to claim 1, "It is manufactured in a sandwich structure in which a three-dimensionally entangled fiber yarn (2b) is inserted between the upper and lower nonwoven filter layers (2a) on the flat compacted ground (1). The process of installing a synthetic resin buffer member (2) so that the incoming rainwater can be quickly drained, the process of compacting the gravel layer (3) on the buffer member (2), and the artificial layer (3) on the upper part It is described that the artificial turf is constructed by a method of "installing the turf 4" (refer to FIG. 7).

However, due to the synthetic resin buffer member (2), it is difficult to create a growth environment in which natural grass can grow, so it may be somewhat difficult to construct a composite lawn. In addition, there is a disappointment that it is not environmentally friendly because it uses a synthetic resin buffer member.

Furthermore, there are prior literatures on the construction method related to artificial turf, but there is no known technology for the construction method related to the composite turf in which artificial turf and natural turf can be provided together, so the development of a related construction method is necessary. to be.

(Prior Document 1) Republic of Korea Patent Publication No. 10-2011-0060451 (published on 06.08.2011) (Prior Document 2) Republic of Korea Patent Publication No. 10-1138004 (2012.04.20. Announcement)

It was devised to solve the above problems, and to solve the problems of artificial turf mats or composite turf mats composed of heterogeneous materials that are difficult to recycle and manage products, by manufacturing and constructing a composite turf mat made of PE-based uni material. After demolition, industrial waste is not generated, recycling and product management are simple, drawing power and durability are improved, and it has a double cell structure to provide excellent ventilation, drainage and cushioning, as well as a composite turf mat and its construction method. that is an object of the present invention.

In addition, in the construction stage, after installing the composite turf mat, turf seeds are sown, and an environment is created to grow natural turf together with the installed artificial turf, so there is no need to plant a separate natural turf, and a composite turf mat can be created and installed in the installation space. It is an object of the present invention to provide a composite lawn mat made of a PE-based uni-material that can be used and a construction method thereof.

In the composite turf mat provided with natural turf and artificial turf as a means for achieving the object of the present invention,

A pair of ground yarn spaced apart in the vertical direction and having a honeycomb structure, a pile yarn that forms a loop by forming a loop of the pair of ground yarn in the vertical direction, and performs the role of artificial turf, and the bottom surface of the ground yarn provided with the pile yarn In the composite turf mat composed of a back coating layer formed by extrusion coating, the pile yarn, the ground yarn and the back coating layer are made of polyethylene.

In addition, a pair of ground yarns have a honeycomb structure forming a plurality of hollows, and are manufactured by a double racell weaving method in which a pair of pile yarns are connected in the vertical direction through the ground yarns, and the hollow inner side includes grass seeds.

In this case, the hollow has a hexagonal shape, and the ground yarn is made of a plurality of hexagonal hollows.

In addition, the back coating layer is formed by an extrusion method by mixing low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) and EVA resin.

In the construction method of the above-described composite turf mat is as follows.

Establishing the foundation in the installation space, the civil construction step (S10) of forming the base layer 300, and the installation location display step (S20) where the composite turf mat 100 will be installed in the installation space after the civil engineering step (S10) ) and the starch sheet bonding step (S30) of bonding the starch sheet 200 to the bottom surface of the composite grass mat 100, and the starch sheet bonding step (S30), the composite grass mat 100 is placed in the installation space. The first composite turf mat installation step (S40) to be installed according to the indicated installation location, and the other composite turf mat 100 installed to the other side of the composite turf mat 100 installed in the first composite turf mat installation step (S40). The second composite turf mat installation step (S50) and the first composite turf mat installation step (S40) and the second composite turf mat installation step (S50) to fix a pair of composite turf mats 100 installed through A connection and fixing step (S60) of connecting and fixing to the ground through a pin (P), and when all of the composite turf mat 100 is installed according to the installation space, the silica sand is infilled to the upper side to form a silica sand layer 400 The silica sand infill step (S70), the grass seed sowing step (S80) of sowing the grass seed (S) on the composite turf mat 100 after the silica sand infill step (S70), and the grass seed sowing step (S80) It consists of a compaction step (S90) of compacting the upper part of the finished composite turf mat 100.

In addition, it includes an additional silica sand infill step (S81) of additionally infilling silica sand on the composite turf mat 100 after the grass seed sowing step (S80).

In addition, the civil engineering step (S10) is a step of flattening the existing ground and forming a base layer 300 composed of a lower base layer 310 and an upper base layer 320 on the ground, the lower base layer 310 is It is made of crushed stone aggregate having an outer diameter of 25 mm, the upper base layer 320 is made of crushed stone aggregate having an outer diameter of 13 mm and stone powder, and the thickness of the lower base layer 310 is that of the upper base layer 320 . It is characterized in that it consists of twice the thickness.

In addition, the starch sheet 200 is characterized in that it is made of sweet potato starch.

Industrial waste is not generated after demolition by manufacturing and constructing a composite turf mat made of PE-based uni material in order to solve the problems of the existing artificial turf mat or composite turf mat composed of heterogeneous materials that are difficult to recycle and product management according to the present invention. It has the effect that recycling and product management are simple, and the pulling power and durability are improved, and it has the double cell structure, so it has the effect of excellent ventilation, drainage and cushioning.

In addition, in the construction stage, after installing the composite turf mat, turf seeds are sown, and an environment is created to grow natural turf together with the installed artificial turf, so there is no need to plant a separate natural turf, and a composite turf mat can be created and installed in the installation space. It has a remarkable effect that it can.

1 and 1a show a flowchart of a method for constructing a composite turf mat according to the present invention.
2 is a cross-sectional view showing an installation space in which a method for constructing a composite turf mat according to the present invention is made.
3 is an exploded perspective view showing the configuration of a composite turf mat according to the present invention.
Figure 4 shows the distal end of the composite turf mat according to the present invention.
FIG. 5 is a partially enlarged view of A of FIG. 2 .
6 is an actual product of a composite lawn mat made of a PE-based uni-material according to the present invention.
7 shows a prior art document.

Hereinafter, it will be described in detail with accompanying drawings so that those skilled in the art can implement the present invention, a composite lawn mat made of a PE-based uni-material and a construction method thereof.

1 and 1a show a flow chart of a method for constructing a composite lawn mat according to the present invention, FIG. 2 is a cross-sectional view showing an installation space in which a method for constructing a composite lawn mat according to the present invention is made, and FIG. 3 is a composite according to the present invention The configuration of the grass mat is shown in an exploded perspective view, Figure 4 shows the distal end of the composite lawn mat according to the present invention, Figure 5 is a partially enlarged view of A of Figure 2, Figure 6 is a PE-based uni in accordance with the present invention It is an actual product of a composite turf mat made of material.

The present invention is a composite turf mat invented to solve the problems of artificial turf mats composed of heterogeneous materials, which are difficult to recycle and product management, and artificial turf and natural turf by creating a growth environment for natural turf when constructing the composite turf mat. It relates to a method for constructing a composite lawn mat that can be provided together, and through the composite lawn mat made of PE-based uni material, industrial waste is not generated after demolition, and recycling and product management are easy, and the pulling power and durability are improved. It has a double cell structure, so it has excellent breathability, drainage, and cushioning, and it is possible to create a vegetation environment of natural grass by using sweet potato starch instead of a synthetic resin filler, and through this, cushioning and aesthetics are improved. It relates to a composite lawn mat made of an improved PE-based uni-material and a construction method thereof.

Prior to the description, the configuration of the composite turf mat 100 will be described later with reference to FIGS. 2 to 6 , and the construction method of the composite turf mat 100 will be described in advance.

The construction method of the composite turf mat 100 is as follows.

1) Civil construction phase (S10)

As a step of laying the foundation of the space to be installed, the existing ground is planarized and the base layer 300 is formed on the ground.

In this case, the base layer 300 is a layer formed using crushed stone aggregate, and may be divided into a lower base layer 310 and an upper base layer 320 according to the size and thickness of crushed stone.

First, the lower base layer 310 evenly spreads and distributes crushed stone aggregate having an outer diameter of about 25 mm, and then flattens the upper surface so that the lower base layer 310 has the same thickness to fit the installation space.

Thereafter, crushed stone aggregate having an outer diameter of about 13 mm is installed on the upper surface of the lower base layer 310 to be distributed, and then stone powder is distributed to form the upper base layer 320 .

Stone powder serves to reduce the empty space between crushed stone aggregates constituting the upper base layer 320 as much as possible, in order to prevent the surface from being submerged by external factors such as rainwater or impact in the future.

Therefore, a planarization operation is performed on the upper base layer 320 made of crushed stone aggregate and stone powder to create a space in which the composite turf mat 100 will be installed.

At this time, by applying a vibrating roller to the flattening operation, the gaps between the crushed stone aggregates are reduced as much as possible, and as the stone powder fills the gaps between the crushed stone aggregates, a hard surface and a flattened base layer 300 can be obtained.

On the other hand, the lower base layer 310 and the upper base layer 320 have a thickness difference formed in addition to the outer diameter difference of the crushed stone aggregate, and the thickness of the lower base layer 310 is twice the thickness of the upper base layer 320 . It is appropriate to have a thickness (height) of 0.2M.

2) Installation location indication step (S20)

It is a step of displaying in advance the installation position of the composite turf mat 100 to be first installed on the base layer 300 on which the civil work step (S10) is completed, using an iron wire.

This installation position display step (S20) is to display the first at the side end of the installation space consisting of a plurality of composite turf mats 100 so that other composite turf mats 100 can be installed along the first installed composite turf mat 100. do.

At this time, the composite turf mat 100 may be formed in a pile shape of a square shape having the same horizontal and vertical widths, or may be formed in a mat shape in which the finished product is wound by a roller. Therefore, after installing one composite turf mat 100 for the first time, it is possible to easily arrange the composite turf mat 100 by arranging it along the edge of the installed composite turf mat 100 .

On the other hand, it is irrelevant to display using a wire of a material other than the iron wire.

3) Starch sheet bonding step (S30)

The above-described starch sheet 200 is bonded in close contact with the back coating layer 130 that is the bottom surface of the composite turf mat 100 . At this time, it is preferable to use a PLA spun bonding nonwoven fabric as the bonding agent, but is not limited thereto.

The starch sheet 200 uses a sheet produced by compressing sweet potato starch, and the size and shape of the starch sheet 200 are made to be the same as the size and shape of the composite turf mat 100 .

Therefore, even if the grass seeds (S) sown in the grass seed sowing step (S80) described later by fixing the composite grass mat 100 to the upper surface of the starch sheet 200 are provided in the hollow 122, the silica sand layer 400 and Since it is seated on the upper side of the starch sheet 200, the growth environment of the grass seed S is created.

4) 1st step of installing composite turf mat (S40)

After placing the composite turf mat 100 provided with the starch sheet 200 on the lower surface at the position indicated on the base layer 300 in the installation position indication step (S20) through the starch sheet bonding step (S30), the edge is cut is a step

Through the first composite turf mat installation step (S40), the first composite turf mat 100, which is the installation standard of a plurality of composite turf mats 100, is placed and installed in the installation space, and the installation space, that is, the base layer 300 ) is cut to fit the edge of the space where the composite turf mat 100 is formed, so that it is possible to provide a clean looking and high-quality composite turf.

5) Secondary composite lawn mat installation step (S50)

In the first composite turf mat installation step (S40), the composite turf mat 100, which is a finished product wound in a pile or roll form, is first installed at the location indicated in the installation location indication step (S20), and then, based on this, other composites on the side end After disposing the grass mat 100 in sequence, it is a step of cutting to fit the edge.

Therefore, in the second composite turf mat installation step (S50), the composite turf mat 100 is arranged and installed along the first composite turf mat 100 previously installed through the first composite turf mat installation step (S40). It can be conveniently placed without indicating the installation location of the composite turf mat 100 to be.

6) Connection and fixing step (S60)

It is a step of connecting and fixing the composite turf mat 100 arranged in the installation space through the first composite turf mat installation step (S40) and the second composite turf mat installation step (S50).

Through the connection and fixing step (S60), in order to prevent the previously installed composite turf mat 100 from being pushed out of the initial installation position by an external force later, another composite turf mat 100 through a fixing pin (P). They can be connected to each other and fixed to the ground.

The fixing pin (P) has a '∩' shape as shown in FIG. 2, and both ends penetrate the abutting ends of the pair of composite grass mats 100, respectively, and connect the composite grass mat 100 to each other and the base layer 300 ) can be fixed.

On the other hand, compared to the base layer 300 corresponding to the installation space, there may be fewer composite turf mats 100 disposed in the first and second composite turf mat installation steps (S50). Therefore, depending on the installation location, it is determined whether all of the composite turf mats 100 are disposed, and if not all are installed, different composite turf sequentially along the side end of the composite turf mat 100 installed in the second composite turf mat installation step (S50). By installing the mat 100, a plurality of composite turf mats 100 are connected to each other and all of the installation space can be covered.

7) Silica sand infill step (S70)

After the connection and fixing step (S60) is completed, the silica sand layer 400 is formed by infilling the silica sand into the upper surface of the composite turf mat 100 disposed in the installation space.

By forming the silica sand layer 400 , the composite turf mat 100 may be separated from the base layer 300 or prevented from floating, and may be fixed to the base layer 300 with a weight.

In addition, a pedestrian can step on the silica sand layer 400 and the composite turf together, thereby providing a cushioning feeling, and providing an environment in which the turf seeds sown in the turf seed sowing step (S80) to be described later can germinate.

In addition, by preventing the ground yarn 120 of the composite turf mat 100 from being exposed to the outside, it is also possible to prevent the composite turf mat 100 from being damaged by the outside.

8) Grass seed sowing step (S80)

It is a step of sowing grass seeds (S) into the upper part of the composite turf mat 100 on which the silica sand layer 400 is formed through the silica sand infill step (S70).

The above-described composite turf mat 100 forms a plurality of fine hollows 122, and the silica sand layer 400 is formed through the silica sand infill step (S70) so that the growth environment of the natural grass (G) is created, By sowing the turf seeds (S), it is possible to provide the natural turf (G) together with the pile yarn 110 serving as the artificial turf of the composite turf mat 100, so that a composite turf can be formed.

In addition, when the sown grass seeds (S) germinate, a growth environment is created through the silica sand layer 400 and the starch sheet 200 so that they can be easily grown.

9) compaction step (S90)

The silica sand layer 400 and the grass seed (S) formed in the silica sand infill step (S70) and the grass seed sowing step (S80) are moved toward the composite turf mat 100 to have strength.

By reducing the porosity of the silica sand layer 400 through the compaction step (S90), and adhering to the composite turf mat 100 and the base layer 300, the silica sand layer 400 forms the composite turf mat 100 with the base layer 300. so that it can be firmly attached to the

In addition, it is possible to prevent the sown grass seeds from being blown away by wind, etc. and to create a germination environment while entering the silica sand layer 400 .

At this time, the compaction step (S90) can be flattened using a vibrating roller or the like like the civil engineering step (S10), and the porosity is reduced so that silica sand or grass seeds are not easily blown away by the wind, and are firmly fixed so as to maintain the initial position. serves to make

Meanwhile, as shown in FIG. 1A , there is a risk that the grass seeds S may be exposed to the outside after the grass seed sowing step S80 , so an additional silica sand infill step S81 for additionally distributing silica sand may be performed.

Therefore, it is possible to add the weight of the silica sand layer 400 and at the same time prevent the grass seeds S from being exposed to the outside, thereby minimizing the loss of the grass seeds S.

The composition of the composite turf mat 100 constructed through the above-described construction method consists of a pile yarn 110 , a ground yarn 120 , and a back coating layer 130 .

First, the pile yarn 110 plays the role of artificial turf, and a pair of ground yarns 120 are woven in a space spaced apart in the vertical direction, and the pair of ground yarns 120 are connected in the vertical direction and are woven to form a composite. It will form a grass mat.

That is, the ground yarn 120 is formed in upper and lower layers in a double cell structure with excellent breathability and cushioning, and the pile yarn 110 is woven by forming loops in the vertical direction, so that the pile yarn 110 is the ground yarn 120. ), and the ground yarn 120 is fixed and maintained in a double cell structure to provide a composite lawn mat with excellent breathability, drainage and cushioning, thereby protecting the existing natural grass, and rainwater on the composite lawn mat It can also help prevent back pain.

This pile yarn 110 is used (melting) in a dried state of raw materials and auxiliary materials first, put into a hay dice, extruded it, and the extruded pile yarn 10 is moved to a bucket for water cooling (Cooling). in waterbath), through a plurality of rollers, a drawing tank, and a shrinkage tank, and then winding through a drawing, heat setting and crimping process.

The ground yarn 120 performs the role of artificial turf by woven pile yarn 110 on the upper surface, and the back coating layer 130 is formed on the lower surface.

The ground yarn 120 has a mat shape with a plurality of units 120a attached in the lateral direction, and one unit 120a is made of a pair of yarns 21 .

The pair of yarns 121 includes a first yarn 121a and a second yarn 121b, and the first and second yarns 121a and 121b are arranged in a symmetrical shape. The first and second yarns 121a and 121b are in close contact with each other, extend downward in a straight line, and are spaced apart from each other on both sides to form a hexagonal hollow 122, and the ends of the hollow 122 In the portion, the side surfaces of the first and second yarns 121a and 121b come into contact with each other and extend in a close contact structure (see FIG. 4 ).

Therefore, as shown in FIG. 4, the first and second yarns 121a and 121b are repeated and spaced apart from the attached state, and the hollow 122 formed spaced apart has a hexagonal shape inside, and one unit 120a is a different unit. When in contact with the side end of 120a, a hollow 122 of the same size is formed in the space spaced apart from the other unit 120a even in the close contact between the first and second yarns 121a and 121b to form a honeycomb structure.

At this time, since the hollow 122 has a hexagonal shape, it has superior bonding ability with the ground surface compared to the existing artificial turf mat woven in a rectangular hollow or lattice shape, and the environment in which the vegetated natural grass can grow is more It is characterized by an excellent growing environment. In addition, since it is formed in a hexagonal shape, the ground yarn 120 can be firmly maintained even if it is moved in multiple directions or pulled by an external force.

Through a plurality of hollows 122 formed as described above, while protecting the natural grass (G) growing in the existing soil, it can also grow outside the composite grass mat, and in case of rain, rainwater does not collect in the composite grass mat and hollow (122) Drainability can also be improved as it moves to the ground through the

In addition, since the hollow 122 is formed in the form of a net, the pulling force and durability are improved, so that damage such as tearing can be prevented even when installed on a playground.

This ground yarn 120 is weaved together with the pile yarn 110 through the double cell method to have a mat shape.

In addition, the hollow 122 of the above-described ground yarn 120 may be manufactured to include additional grass seeds (S) according to the intention of the manufacturer.

Therefore, by germinating the grass seeds (S) in the hollow 122 due to external rainwater, etc., the artificial turf and natural turf in the composite turf mat are abundantly provided, thereby providing an improved cushioning feeling without a separate filler, and natural turf Since it is a composite turf including a turf, it is possible to provide users with an aesthetic sense of natural grass or an eco-friendly place.

The back coating layer 130 prevents the pile yarn 110 from leaving the ground yarn 120 by extrusion coating the bottom surface of the ground yarn 120 provided with the pile yarn 110 , and the bottom surface of the ground yarn 120 . It serves to protect from the outside.

At this time, the back coating layer 130 is coated in the same shape as the bottom surface of the ground yarn 120 rather than the plate shape as shown in FIG. 3 , and the thickness is most preferably 0.3 to 0.4 mm.

The pile yarn 110, the ground yarn 120, and the back coating layer 130 described above may be made of the same polyethylene (hereinafter, PE) series, and in the present invention, a PE-based blending chip may be applied to process them.

First, in the case of the ground yarn 120, it is installed directly on the ground and has to support the woven pile yarn 110, so it has excellent elongation. Hereinafter, to be manufactured by extruding a PE-based blending chip made of HDPE), the pile yarn 110 is made of PE material, and the uprightness of the artificial turf and the PE forming the pile yarn 110 are given by giving a difference in strength. to ensure flexibility.

In this case, as for the PE-based blending chip, the mixing ratio of LLDPE and HDPE is most preferably 1: 9, but is not limited thereto.

In addition, the back coating layer 130 is made of a PE material with improved adhesion. This back coating layer 130 uses a chip blended with low-density polyethylene (LDPE) and LLDPE, which is easy for extrusion coating, and these By additionally adding EVA resin to the blending chip, adhesion to the ground yarn 120 is increased.

Therefore, the pile yarn 10, the ground yarn 20, and the back coating layer 30 are made of the same PE-based uni-material, so that industrial waste is not generated after demolition, and it is made of the same material, so recycling is very easy. . That is, in the case of the existing artificial turf or composite turf, since the artificial turf, the mat, and the back coating layer are all made of different materials, a separate separation process is required for recycling, but in the case of the composite turf mat of the present invention, it is separated into a PE-based uni material. process is unnecessary.

Due to this, it has the economic effect of reducing recycling treatment and lawn management costs, and the application can be expanded during recycling, and the composite turf mat itself can be recycled directly.

On the other hand, what has been described by citing Figs. 1 to 6 describes only the main points of the present invention, and it is obvious that the present invention is not limited to the configurations of Figs. 1 to 6 as much as various designs are possible within the technical scope.

100: composite turf mat 110: pile yarn
120: ground yarn 130: back coating layer
200: starch layer 300: base layer
310: lower base layer 320: upper base layer
400: silica layer
G: natural grass P: fixing pin
S: grass seed

Claims (9)

A pair of ground yarns spaced apart in the vertical direction and having a honeycomb structure; Pile yarn weaving the pair of ground yarn to form a loop in the vertical direction and to perform the role of artificial turf; and a back coating layer formed by extrusion coating the bottom surface of the ground yarn provided with the pile yarn;
The pile yarn, the ground yarn and the back coating layer are made of polyethylene,
The ground yarn is made of a mixture of linear low-density polyethylene (LLDPE) and high-density polyethylene (HDPE), a plurality of units 120a are attached in the lateral direction to have a mat shape, and one unit 120a is a pair of yarns ( 21), and the pair of yarns 121 are made of a first yarn 121a and a second yarn 121b, and the first and second yarns are symmetrical in shape, and their sides are in close contact with each other. The shape extends downward in a straight line and is spaced apart from each other on both sides to form a hexagonal hollow 122, and at the distal end of the hollow 122, the side surfaces of the first and second yarns come into contact with each other and extend into a close contact structure. By having a hollow 122 of the honeycomb structure of the same size in a space spaced apart from the other unit 120a, a pair of pile yarns are connected in the vertical direction through the ground yarn to be manufactured by a double racell weaving method, and the hollow inside the hollow. make it possible to plant grass seeds,
The back coating layer is a PE-based uni-material, characterized in that the chip blended with low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) and EVA resin are mixed to form an extrusion method to increase adhesion with the ground yarn. Composite grass mat made of
delete delete delete delete In the construction method of the composite turf mat of claim 1,
A civil engineering step (S10) of laying the foundation in the installation space and forming the base layer (300);
In the installation space after the civil construction step (S10) is completed, the installation location display step (S20) where the composite turf mat 100 will be installed;
A starch sheet bonding step of bonding the sweet potato starch sheet 200 to the bottom surface of the composite grass mat 100 (S30);
A first composite turf mat installation step (S40) of installing the composite turf mat 100 after the starch sheet bonding step (S30) according to the installation location indicated in the installation space;
a second composite turf mat installation step (S50) of installing another composite turf mat 100 to the other side of the composite turf mat 100 installed in the first composite turf mat installation step (S40);
A pair of composite turf mats 100 installed through the first composite turf mat installation step (S40) and the second composite turf mat installation step (S50) are connected through a fixing pin (P) and a connection for fixing to the ground and fixing step (S60);
A silica sand infill step (S70) of forming a silica sand layer 400 by infilling the silica sand upward when the composite turf mat 100 is all installed according to the installation space;
A lawn seed sowing step (S80) of sowing grass seeds (S) onto the composite turf mat 100 after the silica sand infill step (S70) is completed; and
A compaction step (S90) of compacting the upper part of the composite lawn mat 100 after the sowing step (S80) of the grass seeds has been completed;
After the grass seed sowing step (S80) and before the compacting step (S90), an additional silica sand infill step (S81) of additionally infilling silica sand on the upper part of the composite turf mat 100; includes;
In the civil construction step (S10), the existing ground is planarized and a base layer 300 composed of a lower base layer 310 and an upper base layer 320 is formed on the ground,
For the lower base layer, crushed stone aggregate having an outer diameter of about 25 mm is evenly spread and the upper surface is flattened, and the lower base layer is made of crushed stone aggregate having an outer diameter of about 13 mm on the upper surface of the lower base layer. After installation to a thickness of 1/2 of the thickness, the stone dust is distributed to form the upper base layer, and then the gap between crushed stone aggregates is reduced with a vibrating roller, and then the stone powder is filled in the gaps between the crushed stone aggregates. Way. delete delete delete

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