KR100834040B1 - Filler for artificial turf, method of the same, and artificial turf including the same - Google Patents

Abstract

Filler for artificial turf, a manufacturing method of the same, and artificial turf including the same are provided to improve permeability and damping force regardless of locations by using hard charcoal, plasticizer, and recycled soft plastic. Filler for artificial turf includes hard charcoal, plasticizer, and recycled soft plastic. The plasticizer is one of DOP(DiOctyl Phatalate), DOA(DiOctyl Adipate), and TCP. The filler for artificial turf is particles. A manufacturing method of the Filler for artificial turf includes the steps of: collecting recycled soft plastic; putting the recycled soft plastic, hard charcoal, and DOP in a plastic grinder; cooling the mixed filler; and cutting the filler by a predetermined length.

Description

Filler for artificial turf, method for manufacturing same, and artificial turf including the same {Filler for artificial turf, Method of the same, and Artificial turf including the same}

1 is an enlarged view of a conventional artificial turf filler,

2 is a cross-sectional view of the artificial turf according to a preferred embodiment of the present invention;

3 is an enlarged view of a filler for artificial turf according to a preferred embodiment of the present invention;

Figure 4 is a flow chart of a method for manufacturing artificial turf filler in accordance with a preferred embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110-Bubble 120-Silica Layer

130-Filler layer 140-Artificial grass pile

The present invention relates to a filler for artificial turf, a method for manufacturing the same, and an artificial turf including the same. More specifically, by adding hardwood and plasticizer to recycled soft plastic, artificial turf filler can be manufactured to improve durability, elasticity and economic efficiency. Especially, eco-friendly recycled materials can be used to suppress dust generation so that you can enjoy exercise in a pleasant environment. The present invention relates to a filler for artificial turf, a method for manufacturing the same, and an artificial turf including the same.

Football and baseball fields are planted with natural grass to prevent injuries and dust. Natural grass is soft and lively, but it takes considerable time and cost to grow to a certain size. Therefore, artificial turf is often installed in soccer fields and baseball fields.

 On the other hand, the top of the artificial turf is generally filled with a filler to provide a buffer for the athletes playing. 1 is an enlarged view of a conventional filler. Conventional fillers are prepared by crushing waste tires or recycled rubber to produce particles and controlling the particle size with a mesh. A number of such fillers are disclosed, including Korean Utility Model Registration Publication No. 0184138 (artificial turf structure of artificial turf ground).

However, these fillers do not have a constant size as shown in Figure 1 because there is a lot of dust, such as ball or human body, shoes, clothes, etc. harmful to the respiratory system, if severe, there is a problem causing pneumoconiosis. In addition, waste tires or EPDM (Ethylene Propylene Diene Monomer), which are materials of such fillers, are recycled in automobiles, and thus, inconveniences such as lead, asbestos, etc., must be separated and removed beforehand. In addition, such a filler has a problem that the particle size is non-uniform, so that the permeability is reduced, and the degree of buffering varies depending on the position. In addition, there is a problem that excessively expensive to grind using new materials without using recycled materials.

The present invention has been made to solve the above problems, in particular by adding artificial hardener and plasticizer to the recycled soft plastics to prepare artificial grass fillers to improve durability, elasticity and economical efficiency, in particular using environmentally friendly recycled materials It is an object of the present invention to provide a filling material for artificial turf, a method for manufacturing the same, and an artificial turf including the same, to suppress dust generation so that users can enjoy exercise in a comfortable environment.

In order to achieve the above object, the filler for artificial turf according to the present invention is characterized in that it comprises recycled soft plastic, hard coal, and plasticizer in the filler that provides a buffering force to the artificial turf.

In addition, the plasticizer may be any one of dioctylphthalate (DOP), dioctyl adipate (DOA), and tricresyl postate (TCP).

In addition, the filler for artificial turf may have a particle shape.

In addition, the manufacturing method of the artificial turf filler according to the present invention comprises the steps of (a) collecting the recycled soft plastic; (b) adding and heating the recycled soft plastic, hard coal and DiOctyl Phatalate (DOP) in a plastic mill; (c) cooling the melt mixed filler material; And (d) characterized in that it comprises a step of cutting to a constant size.

In addition, the artificial turf according to the present invention is bubble paper; A silica sand layer disposed on the bubble paper; And is disposed on the silica sand layer, characterized in that it comprises the filler layer.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

First, the artificial turf according to a preferred embodiment of the present invention will be described.

2 is a cross-sectional view of the artificial turf according to a preferred embodiment of the present invention.

Artificial turf according to a preferred embodiment of the present invention, referring to Figure 2, is formed including a bubble paper 110, a silica sand layer 120, a filler layer 130, and artificial grass pile (pile) (140) do.

The bubble paper 110 is a portion for fixing the artificial grass pile 140. The bubble paper 110 is formed in a wide flat plate shape, and generally has a structure in which a synthetic polymer pad is attached to the rear surface of the fiber bubble paper. Fibrous base foam may be formed of a polypropylene (PP) material, it is preferable to use a double or triple reinforced to improve the strength. In addition, the bottom surface of the fiber foam is subjected to the latex coating or polyurethane coating so that the fiber foam is subjected to the force. The bubble paper 110 is formed of a polyester or polypropylene material, and is made of a mesh so that the pitcher is made smoothly.

The silica sand layer 120 is formed on the bubble paper (110). The silica sand layer preferably has a silicon dioxide (SiO ₂ ) content of 85% or more and a particle diameter of about 0.3 to 1.0 mm. However, the components and particle diameter of the silica sand layer 120 are not limited thereto. In addition, the thickness of the silica sand layer 120 may be formed about 10 ~ 20mm.

The filler layer 130 is formed on the silica sand layer 120. The filler layer 130 is provided to provide a buffer force on the bottom, and includes recycled soft plastic, hard coal, and plasticizer. In addition, the filler layer 130 is preferably formed in a particle shape of a predetermined size (about 1 ~ 2mm) in order to improve drainage and strengthen the buffering force. An enlarged view of the filler layer 130 is shown in FIG. 3.

The recycled soft plastic may include PVB resin (PolyViny Butyral copolymer), AS resin (Acrylonitrile Styrene copolymer), ABS resin (Acrylonitrile Butadiene Styrene copolymer), SBS resin (Styrene-Butadiene-Styrene block copolymer), SEBS resin (Styrene Ethylene Butylene Styrene copolymer) Styrene-based polymers including polystyrenes having an atactic molecular structure such as copolymer) and copolymers and polystyrenes, polyesters, polycarbonates, polyethers, polyamides, polyoxymethylene and the like having an isotactic molecular structure Of condensed polymers, poly (acrylic acid), poly (acrylic acid ester), poly (methyl methacrylate) acrylic polymers, polyethylene, polypropylene, polybutene, poly (4-methylpentene-1), ethylene and propylene Polyolefins such as copolymers, vinyls such as poly (vinyl chloride), poly (vinylidene chloride), poly (vinylidene fluoride) and the like Thermoplastic resins, such as polymers of halogens, can be used and are not limited to the types listed. Although new products may be used as the recycled soft plastic, it is preferable to use recycled materials in view of cost reduction and environmental protection.

The hard coal is also called precipitated calcium carbonate or hard calcium carbonate, and is produced by chemical processing of limestone. Hard coal is hard calcium carbonate having spindle-shaped or columnar particles having a diameter of 1 μm or more depending on the size of the particles, and colloids having ultra-fine and cubic crystals with smaller particles (semi-colloid: 0.1-0.3 μm, colloid: 0.01-0.08 μm) ) Can be divided into calcium carbonate. Hard coal is added to fillers to reduce raw materials and improve the physical and chemical properties of rubber and plastics. In addition, hard coal has higher hardness and tensile strength than heavy carbon, and has excellent workability during extrusion and less shrinkage and deformation, which improves the finish surface of recycled soft plastics, prevents deformation of products, and increases the specific gravity of recycled soft plastics. Do not lose it.

The plasticizer is an organic material that is added to a thermoplastic plastic to increase thermoplasticity and thereby facilitate molding at high temperatures. Examples of the plasticizer include DOP (dioctylphthalate), DOA (dioctyl adipate), and TCP (tricresyl postate). The plasticizer works as follows. Plastics are made up of long strings of molecules, and the harder they pull between each other, the harder they become. At this time, when the plasticizer is inserted between the molecules, the direct pulling force between the plastic molecules is weakened, and thus it is bent well. Therefore, the plasticizer should be capable of blending well with the plastic, that is, having compatibility, and it is desirable to increase plasticity and improve other properties such as heat resistance, cold resistance, flame resistance, and electrical properties. The molecular structure of DOP is shown in Formula 1.

Di-Octyl-pathalate (DOP) is a colorless liquid ester produced by the reaction of phthalic anhydride and octyl alcohol. It has a melting point of minus 46 ° C and a boiling point of 231 ° C (5mmHg). There are three kinds of octyl alcohols: 2-ethylhexyl alcohol obtained from acetylene or ethylene, n-octyl alcohol obtained from palm oil, and isooctyl alcohol obtained from propylene and butylene. What is obtained from n-octyl alcohol is called dinormal octyl phthalate (DNOP), and what is obtained from isooctyl alcohol is called diisooctyl phthalate (DIOP), but it is usually called together DOP.

The artificial turf file 140 is tufted to the bubble paper (110). The artificial grass pile 140 is formed of a material such as polyethylene (PE), polypropylene (PP), and is formed in a length of about 50 ~ 60mm.

The artificial turf may have a thickness of about 10 to 20 mm and the filler layer 130 of about 20 to 25 mm when the length of the artificial grass pile 140 is 50 to 60 mm. . Therefore, since the artificial turf pile 140 is exposed to the top of about 15 ~ 22mm, it is possible to minimize the injury prevention of the athletes, to reduce the impact, and to prevent burns due to frictional heat.

Next, a method of manufacturing artificial turf filler according to an embodiment of the present invention will be described.

Figure 4 is a flow chart of a method for manufacturing artificial turf filler according to an embodiment of the present invention.

In the manufacturing method of artificial turf filler according to an embodiment of the present invention, referring to Figure 4, the step of recycling the recycled soft plastic (S10), adding the recycled soft plastic, hard coal, plasticizer and plasticizer (S20) It comprises a step (S30) to cool the melt-mixed filler, and cutting to a certain size (S40).

The step of collecting the recycled soft plastic (S10) is a step of obtaining PVB resin, AS resin, ABS resin and the like by collecting recycled used plastic materials.

Subsequently, a step of adding recycled soft plastic, hard coal, and a plasticizer to the plastic crusher and heating is performed (S20). The heating temperature depends on the type of plastic and is preferably heated above the melting point so as to melt sufficiently.

After the heating is completed, the melt-mixed filler is cooled (S30), and cut to a certain size (S40) to prepare a filler for artificial turf. When the filler for artificial turf is cut to a certain size, the size becomes uniform particle shape, and the size is preferably about 1 to 2 mm. Since the filler is manufactured in a particle shape of a constant size as described above, it is possible to improve the permeability and to have a constant buffering force regardless of the position. In addition, since the particle shape of a certain size does not generate dust, there is no fear of being lost by rain or the like.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

According to the present invention, since the filler is formed in the form of particles of a certain size, no dust is generated and there is no concern for the ball or the human body.

In addition, according to the present invention, the particle size is uniform, thereby improving permeability and providing a constant buffering force regardless of position, thereby improving the playing feeling and minimizing injury.

In addition, according to the present invention by utilizing the commercially available recycled plastic it is possible to prevent environmental pollution by disposal and to mass produce a large amount of filler at a relatively low cost.

Claims (5)

In the filling material to provide a buffer to the artificial turf, A filler for artificial turf, comprising recycled soft plastic, hard coal, and a plasticizer. The method of claim 1, The plasticizer is a filler for artificial turf, characterized in that any one of dioctyl phthalate (DOP), dioctyl adipate (DOA), tricresyl formate (TCP). The method of claim 1, Filling material for the artificial turf is artificial turf filler, characterized in that the particle shape. In the manufacturing method of the filler to provide a buffer force to the artificial turf, (a) collecting the recycled soft plastic; (b) adding and heating the recycled soft plastic, hard coal and DiOctyl Phatalate (DOP) in a plastic mill; (c) cooling the melt mixed filler material; And (d) cutting to a constant size Method of manufacturing a filler for artificial turf comprising a. Bubble paper; A silica sand layer disposed on the bubble paper; And The filler layer disposed on the silica sand layer, according to any one of claims 1 to 3. Artificial turf comprising a.

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