KR101841220B1 - Method for manufacturing filler for artificial turf and filler for artificial turf manufactured by the same - Google Patents

Abstract

The present invention relates to a method for manufacturing an artificial turf filler and an artificial turf filler manufactured by the same. According to the present invention, the method for manufacturing an artificial turf filler includes: a material preparing step (S100) of preparing a vegetable material and an inorganic matter; a vegetable material grinding step (S200) of grinding the prepared vegetable material; a vegetable material drying step (S300) of removing moisture by drying the vegetable material which is ground; a mixing and pressing step (S400) of manufacturing a formed object by forming the formed object after mixing the dried vegetable material and the inorganic matter and drying the same; a sintering step (S500) of sintering the formed object by heating the pressed formed object; and a cooling step (S600) of forming a sintered ball by cooling the sintered formed object. According to the present invention, the method for manufacturing an artificial turf filler manufactures the filler in the shape of the sintered ball by mixing and sintering the various vegetable materials and the inorganic matters. So, the method for manufacturing an artificial turf filler can facilitate drainage of artificial turfs and can improve maintainability, a moisture property, and a perforating property by having an air layer between the artificial turfs. Also, the method for manufacturing an artificial turf filler can prevent a user from being burned due to heat of the artificial turfs in summer and can grow natural turfs by enabling seeds of the natural turfs to be easily inserted into a space between the artificial turfs. Also, the method for manufacturing an artificial turf filler can obtain environmental stability such as a deodorization property by using a natural material.

Description

Technical Field [0001] The present invention relates to a method for producing an artificial turf filler and an artificial turf filler produced by the method,

The present invention relates to a process for producing artificial turf filler and an artificial turf filler produced by the method. More particularly, the present invention relates to a synthetic turf filler which is produced by mixing and firing a variety of vegetable and inorganic materials, It is possible to improve the water retentivity, moisturizing property and other purity by forming an air layer between the artificial turf and prevent the user's burn due to deterioration of artificial turf in the summer and to easily sow natural turf as a space between artificial turf The present invention relates to a method for producing an artificial turf filler capable of ensuring environmental stability such as deodorization characteristics and the like by using natural materials, and an artificial turf filler produced thereby.

In general, artificial turf is widely used in areas where natural light is closed, where pressure is concentrated, where climatic growth of natural grass is difficult, and where turf management is difficult.
This artificial turf has a higher initial construction cost than natural turf but it is used semi-permanently. Because of the convenience of maintenance, the surface has been chosen to be suitable for exercise, the preference is getting higher. In recent years, It is being widely constructed.
In general, artificial turf can be produced by putting artificial turf on the ground such as remicon or compaction, then sanding silica sand between the artificial turf to fix artificial turf, and to give a certain elasticity to artificial turf Place the rubber chip filler so that artificial turf is buried in the filler.
However, the rubber chip used as the filler has the problem that the surface is photocorrosidated by the ultraviolet rays, the powder is scattered around, and sucked into the bronchi of infants and children, thereby impairing health.
On the other hand, if the filler material formed by calcining natural minerals has insufficient strength, the life time of the filler material may be reduced by the reduced pressure, or scattered dust may be generated and the drainage performance may be lowered.
In addition, when the user slides on artificial turf, the rubber and the skin, which are the filler, are rubbed and burned. On the hot summer days, the surface temperature of artificial turf rapidly rises to high temperature. In dry state, Not only inconvenience but also increase the risk of fire.

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Domestic Registration No. 10-1773146 (registered on Aug. 24, 2017) Korean Patent No. 10-0799262 (registered on January 23, 2008) Domestic registered patent No. 10-1295279 (registered on August 05, 2013)

The present invention can improve the water retention, moisturizing and anti-seizing properties by facilitating the drainage of artificial turf and forming an air layer between artificial turf by combining various vegetable materials and inorganic materials and firing to produce filler materials in the form of plastic balls It is possible to prevent the user's burn due to deterioration of artificial turf in the summer and to grow the seeds of natural grass easily by the space between artificial turf and to secure environmental stability such as deodorant property by using natural material And a method for manufacturing artificial turf filler and an artificial turf filler produced by the method.
In addition, since the present invention is environmentally friendly and harmless to the human body by using various vegetable materials and inorganic materials, it has an excellent water moisture content because it is formed between filling materials, so that the artificial turf And a method for manufacturing a filler and a synthetic grass filler produced by the method.
In addition, the present invention provides a method for preventing the generation of static electricity in artificial turf by maintaining moisture between the pores of the filler material, preventing the surface temperature of artificial turf from rising to a high temperature, A method for manufacturing artificial turf filler capable of maintaining the temperature by allowing artificial turf filler to maintain moisture by discharging water the filling material has little by little, and to provide artificial turf filler manufactured thereby.
It is another object of the present invention to provide a method for manufacturing artificial turf filler which is improved by crushing, scattering dust and durability due to insufficient strength of a filler formed by calcining natural minerals.
In addition, the present invention can deodorize the smell of lawn by making a filler using various vegetable materials and minerals, and has an antibacterial effect on feces such as animals and moisturizing property of filler, The present invention also provides a method for manufacturing artificial turf filler capable of securing environmental stability and enabling artificial turf filler to be produced.
The various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

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The method for preparing artificial turf filler according to the present invention comprises preparing a plant material and an inorganic material (S100); A plant material crushing step (S200) of crushing the prepared vegetable material; Drying the pulverized vegetable material to dry the plant material (S300); The dried vegetable material and inorganic material are mixed, dried and molded to deodorize the smell of grass, and the antibacterial effect on the excrement of animal and the moisturizing property of the filler are improved, so that fine dust in the air can be cleaned and kept in a pleasant environment A mixing and pressing step (S400) of producing a molded body capable of being formed; A sintering step (S500) of heating and firing the pressed compact; And a cooling step (S600) of cooling the fired formed body to form fired balls.
The vegetable material may be at least one selected from the group consisting of rice hulls, chopping knives, hemp cork, sawdust, rice straw, sugar cane basin, pine needles, and wood pulp woods in the material preparation step (S100). Examples of the inorganic materials include bentonite, , Talc, diatomaceous earth, vermiculite, perlite, vermiculite, montmorillonite, sericite, dolomite and zeolite may be used.
The plant material is pulverized to a particle size of 10 to 2000 μm in the plant material pulverization step (S200). In the plant material drying step (S300), the pulverized plant material is dried at a temperature of 70 to 150 ° C. for 1 to 5 hours The dried vegetable material may be dried to have a moisture content of 5 to 10% by weight.
In the mixing and molding step S400, the dried vegetable material and the inorganic material are mixed at a weight ratio of 0.1 to 30 parts by weight of the dried vegetable material and 70 to 99.9 parts by weight of the inorganic material, For a predetermined period of time, and then the mixture is press-formed at a pressure of 50 to 250 kgf / cm < 2 > using a compression molding machine or a compression molding machine to form a compact having a particle size of 1 to 5 mm.
In the sintering step (S500), the internal temperature of the kiln is maintained at 300 to 550 DEG C, the molding is put into the kiln, and the sintering is performed for 1 to 10 hours while raising the temperature to 700 to 1300 DEG C, In step S600, the molded body is taken out from the kiln and allowed to stand for 1 to 3 hours at a temperature of 250 to 300 DEG C, followed by cooling and then allowed to stand at a temperature of 55 to 65 DEG C for 5 to 15 hours.
The elastic chips are further mixed in a weight ratio of 1 to 60 parts by weight of the elastic chips with respect to 100 parts by weight of the plastic balls manufactured through the cooling step (S600), and the elastic chips are used in the state of no lateral force, 1 to 5 mm and a specific surface area of 0.0008 to 0.1 m ² / g.
The fired balls used in combination with the fired balls or elastic chips may be mixed with natural grass seeds.
In addition, the present invention includes artificial turf filler prepared by the above-described method.
The details of other embodiments are included in the detailed description.

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The method of manufacturing artificial turf filler according to the present invention is a method of manufacturing artificial turf filler by mixing various vegetable materials and inorganic materials and firing to produce filling material in the form of plastic balls to facilitate drainage of artificial turf and to form an air layer between artificial turf, And it can improve the other sorts. It can prevent user's burn due to deterioration of artificial turf in summer, and it is easy to grow with natural seeds of seeds because it is a space between artificial turf. The same environmental stability can be secured.
In addition, artificial turf filler according to the present invention is environmentally friendly and harmless to the human body by using various vegetable materials and inorganic materials, and is formed between fillers to have a good water moisture content. Therefore, even if a person slides on a filler material, can do.
In addition, the artificial turf filler according to the present invention maintains moisture between the pores of the filler to suppress the generation of static electricity in the artificial turf and prevent the surface temperature of the artificial turf from rising to a high temperature. In case of rain, the filler absorbs moisture and is faded The temperature can be maintained by allowing the artificial turf filler to maintain moisture by discharging the moisture that the filler has had in dry or hot weather.
In addition, the artificial turf filler according to the present invention is able to deodorize the smell of turf by preparing a filler using various vegetable and inorganic materials, and has an antimicrobial effect on excrements such as animals and an improved moisturizing property of fillers, It is possible to purify the air of dust and maintain a pleasant environment, thus securing environmental stability.
It will be appreciated that embodiments of the technical idea of the present invention can provide various effects not specifically mentioned.

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1 is a flowchart illustrating a method of manufacturing a synthetic turf filler according to the present invention.
2 is a cross-sectional view schematically showing a state in which a synthetic grass filler according to the present invention is installed.

Advantages and features of the present invention, and methods of accomplishing the same, will be apparent from and elucidated with reference to the embodiments described hereinafter in detail. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.
Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a method for manufacturing artificial turf filler according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a flow chart for explaining a method of manufacturing artificial turf filler according to the present invention, and FIG. 2 is a sectional view schematically showing a state in which artificial turf filler according to the present invention is installed.

1 and 2, a method of manufacturing a synthetic turf filler according to the present invention includes preparing a material (S100), crushing a vegetable material (S200), drying a vegetable material (S300), mixing and molding (S400) , A firing step (S500), and a cooling step (S600).

1. Material preparation step (S100)
The material preparing step S100 is a step of preparing the vegetable material and the inorganic material as materials for preparing the filler to be filled in the artificial turf.
In the preparation of the material (S100), various vegetable materials and minerals may be prepared. For example, the vegetable materials include rice hulls, hulls, hemp, cork, sawdust, rice straw, sugar cane, pine needles, May be used. In addition to the above-mentioned materials, various known vegetable materials may be included.
The inorganic material may be at least one selected from the group consisting of bentonite, loess, talc, diatomaceous earth, vermiculite, perlite, vermiculite, montmorillonite, sericite, dolomite and zeolite in the material preparation step (S100) In addition to the material, various known minerals used to make fillers for artificial turf may be included.
More specifically, in the present invention, in order to control the strength, specific gravity, and the like of the fired balls manufactured within the limits not to impair the technical idea of the present invention other than the above-mentioned inorganic substances, calcium carbonate, silica, titanium dioxide, kaolin And mica may be further added to the composition.
For example, the rice husks do not generate second industrial wastes, pollution does not occur during processing, no carbon is generated, and there is no problem of environmental burden, and the rice husk has a high water content , The heat insulating performance is very good, so that the temperature of the artificial turf can be kept low, and the possibility of image greatly decreases even if the user slips.
The loess has a large amount of microorganisms beneficial to the human body and the environment, thereby suppressing molds and the like, thereby providing a pleasant condition to the floor filling material. In addition, the loess prevents the transmission of various germs in the artificial turf filler to be produced, and emits a large amount of far-infrared rays at 40 to 50 ° C. Moreover, since the loess prevents the occurrence of atopy, even when an infant or a child operates in the artificial turf, the risk of atopy is greatly reduced. Further, since the above-mentioned loess has incombustibility, the problem that the filling material is twisted can be greatly reduced.
The zeolite is a silicate mineral which is structurally loosely bound to each atom of the crystal, so that the water filling the spaces between the crystals is discharged as a high temperature, and the skeleton is maintained, so that other particulate matter can be adsorbed to the inner space. Particularly, the zeolite has excellent deodorizing effect and adsorption effect, so that harmful components can be adsorbed and removed.
For example, the zeolite may have a specific surface area of 500 to 1000 m ² / g and a zeolite particle size of 100 to 300 nm. The zeolite may be prepared by mixing and dissolving sodium hydroxide in pure water, and then adding sodium aluminate ), And the mixture was stirred for 1 to 3 hours to prepare a mixed solution. After mixing 1 M of Al ₂ O ₃ , 4 M of Na ₂ O, 10 M of SiO ₂ and 125 M of H ₂ O, At a rotation speed of 300 to 350 RPM for 3 to 5 hours at a temperature of 85 to 100 DEG C, stirring the mixture for 3 to 6 hours at a rotation speed of 200 to 250 RPM at a temperature of 85 to 100 DEG C, And the mixed solution is crystallized by using a microwave heat source at a temperature of 80 to 95 ° C at a rotation speed of 100 to 150 RPM for 1 to 3 hours to synthesize a zeolite crystal, The unreacted material was washed with pure water and stirred in a drier at 70 to 80 ° C for 3 to 5 hours while stirring. The pH was adjusted to 6.0 to 7.0 using 3% nitric acid. After that, ammonium chloride (NH ₄ Cl) solution is added and then stirred at a temperature of 30 to 40 ° C at a rotation speed of 100 to 150 RPM for 15 to 20 hours to prepare a zeolite crystallization solution. Then, 100 to 1500 parts by weight of pure zeolite crystallized solution 10 to 15 parts by weight of a 12% silver nitrate (AgNO ₃ ) solution is added, and the mixture is reacted at a temperature of 35 to 45 ° C for 5 to 10 hours to be washed. After the washing, For 12 hours to prepare powdered zeolite.

2. Plant material milling step (S200)
The plant material crushing step (S200) is a step of crushing the prepared vegetable material.
In the step S200 of pulverizing the vegetable material, the vegetable material may be pulverized into a powder form so that the vegetable material is uniformly mixed with the inorganic material and a filling material having an appropriate strength can be produced. It can be crushed to have a particle size.

3. Planting material drying step (S300)
The plant material drying step (S300) is a step of drying the pulverized plant material to remove moisture.
In the step of drying the vegetable material (S300), the pulverized vegetable material may be dried at a temperature of 70 to 150 ° C for 1 to 5 hours to dry the pulverized vegetable material to a moisture content of 5 to 10% by weight.
If drying of the pulverized vegetable material progresses below the lower limit range in the step of drying the vegetable material (S300), the moisture contained in the vegetable material can not be sufficiently removed and the void of the filling material formed becomes too large There is a possibility that the strength is lowered, and when it goes beyond the upper limit range, the absorbency and the water retention of the filler to be produced may be deteriorated.

4. Mixing and molding step (S400)
In the mixing and forming step (S400), the dried vegetable material and the inorganic material are mixed, dried, and then molded to produce a molded body.
In the mixing and shaping step (S400), the dried vegetable material and the inorganic material are mixed with water, and dried and molded to produce a molded body. The dried vegetable material and the inorganic material are mixed with the dried vegetable material 0.1 to 30 By weight, and 70 to 99.9 parts by weight of an inorganic material, and dried at a temperature of 50 to 70 DEG C for 1 to 10 hours, and then subjected to pressure molding at a pressure of 50 to 250 kgf / Can be molded to have a particle diameter of 1 to 5 mm.
In the mixing and squeezing step S400, the molded body is manufactured by mixing the dried vegetable material and the inorganic material, and drying and molding. Thus, the smell of the grass can be deodorized, the antibacterial effect on the excrement of the animal and the moisturizing property of the filling material are improved, It is possible to keep fine dust in a clean and air-clean environment.
If the content ratio of the dried vegetable material and the inorganic material in the mixing and molding step (S400) is out of the above range, the internal pores of the filler to be produced may be insufficient, and the strength of the filler may be decreased. May cause problems.
In the mixing and forming step S400, the dried plant material and the inorganic material may be mixed in a weight ratio of 0.1 to 30 parts by weight of the dried vegetable material and 70 to 99.9 parts by weight of the inorganic material, respectively. The blending amount of the vegetable material may be reduced. However, when the blending amount of the vegetable material is more than 30 parts by weight, the pores of the fired ball to be produced become too large to maintain the strength of the fired ball, It is preferable that the dried vegetable material and the inorganic material are mixed in a weight ratio of 0.1 to 30 parts by weight of the dried vegetable material and 70 to 99.9 parts by weight of the inorganic material, respectively.
The pressure of the compression molding machine is set according to the mixing ratio of the dried vegetable material and the density of the mineral material. Generally, when the pressure is less than 50 kgf / cm 2, the compactness of the compact is decreased, Cm < 2 > is not preferable because the improvement of the compactness is limited, the equipment manufacturing cost is increased, and the energy consumption is increased.

5. Firing step (S500)
The firing step (S500) is a step of heating and firing the molded body.
In the firing step (S500), the compact formed in a ball shape may be heated and fired in a kiln, for example, a tunnel kiln or a discontinuous kiln may be used, The temperature is maintained at a temperature of 300 to 550 DEG C and the shaped body is put into the kiln and fired in an oxidation or reduction (neutral) atmosphere for 1 to 10 hours while gradually increasing the temperature to 700 to 1300 DEG C .
In the firing step (S500), the internal temperature of the kiln may be maintained at 300 to 550 DEG C for the first time, and then the molded body may be introduced. By maintaining the internal temperature of the kiln in such a temperature condition, It is possible to prevent breakage.
After the compact is charged in the firing step (S500), the firing is performed in an oxidizing or reducing (neutral) atmosphere for 1 to 10 hours while gradually increasing the temperature to 700 to 1300 ° C. It is difficult to produce fillers having a desired compressive strength. In the case of firing above the above temperature and time conditions, the effect of improving the physical properties of the filler material is insignificant. On the other hand, And the cost of production is increased.
In the firing step S500 of the present invention, the vegetable material may be carbonized in the compact, and the volume of the carbonized vegetable material may be reduced to form voids. The carbonized vegetable material may contain various minerals It is possible to provide an optimal place where natural grass or various plants or microorganisms can grow in a place where artificial turf is formed, and it is also possible that the pore absorbs moisture and gradually releases the absorbed water It is possible to suppress the rapid temperature rise of the artificial turf during the summer so that the occurrence of skin burns due to the friction of the user can be prevented in advance.

6. Cooling step (S600)
In the cooling step (S600), the fired compact is cooled to form a fired ball.
In the cooling step (S600), the fired compact is cooled by allowing the compact to be removed from the furnace and then allowed to stand for 1 to 3 hours at a temperature of 250 to 300 DEG C, followed by cooling at a temperature of 55 to 65 DEG C for 5 to 15 hours Cooling the sintered compacted body through the two-stage cooling as described above can prevent the surface crack and the compressive strength of the sintered compacted body from being lowered due to rapid cooling, It is possible to prevent shrinkage of the pores formed in the substrate.

On the other hand, in the present invention, when the fired ball is used as a filler for artificial turf, water absorption and discharge function, minerals and the like are supplied to help the growth of natural grass. However, Compaction may occur and the impact absorption performance may be deteriorated. Therefore, adequate airing is required to maintain the shock absorbing performance of artificial turf.
In order to remedy such a problem and to further enhance the effect of the present invention, it is preferable to use an elastic chip capable of giving a deformation by a pressing force together with the fired ball manufactured according to the present invention. But also the supply of oxygen to the roots of plants necessary for smooth growth of natural grass can be smoothly performed.
The fired ball used in the present invention mixed with the fired ball or the resilient chip can be installed by mixing natural grass seeds when the fired ball is used in a playground or the like and the fired ball is mixed with the fired ball or the elastic chip. Since the grass seeds germinate easily due to the pore (or space) difference, natural grass artificial turf can be realized.
The elastic chips used in the present invention preferably have a width of from about 1 mm to about 5 mm, a specific surface area of from about 0.0008 to about 0.1 m ² / g, and a width of from about 1 mm to about 5 mm.
If the specific surface area of the elastic chips is less than 0.0008m ² / g in the present invention less pores is low aeration (Airation), and when the specific surface area is greater than 0.1m ² / g a specific gravity becomes small loss in case of rain, rain water or air gap There is a problem that the size is small and the airing effect is halved.

That is, the weight ratio of the elastic chips (rubber chips) 1 to 60 parts by weight, preferably 30 to 60 parts by weight, is mixed with 100 parts by weight of the plastic balls manufactured through the cooling step S600, In the present invention, when the fired ball and the elastic chip manufactured as described above are laid on a playground or the like, the fired ball and the elastic chip may be installed in a mixed state or may be sequentially stacked and laid so that they can be mixed and used .

When the elastic chip is included below the lower limit range, the elastic rebound resilience of the elastic chip may be lowered and the fatigue of the user may be amplified, and the contact between the plastic balls during abrasion may become severe during use, shortening the life of the filler . If it exceeds the above upper limit range, the rebound resilience may be higher than the standard, and the leveling property of the filler produced due to the agglomeration of the elastic chips may be lowered.

In addition, in the present invention, the elastic chip may vary the mixing ratio within the range in the field depending on whether the lower pad is used or the elastic absorbing power of the pad when the artificial turf is installed.

As the elastic chips (rubber chips), various known materials having elasticity such as EPDM elastic chips (rubber chips), polyurethane elastic chips (rubber chips), regenerative elastic chips (rubber chips), SEBS and PVB have.
For example, the EPDM elastomeric chip refers to a synthetic rubber made of ethylene, propylene, and non-conjugated diene, and has excellent ozone resistance, cold resistance, heat resistance, Because of its excellent formability and good safety, various colors and patterns can be realized.
In addition, the polyurethane for producing the polyurethane elastic chip is formed by bonding molecules with alcohol and isocyanate by generating reaction heat by polymerization reaction, and is excellent in adhesion strength and abrasion resistance in terms of material properties, Durability) and chemical resistance, it has an advantage of little change in color and physical properties even when exposed to ultraviolet rays or acid rain.
In addition, in the case of the recycled elastic chip, it is produced by utilizing the waste resources recovered from waste tires and the like, and since it is basically black, various surfaces can be realized as a polyurethane resin and a coating agent on the surface after manufacturing the rubber powder, It can also be used in various facilities such as.

In addition, in the present invention, the filler used in artificial turf can be manufactured by using the plastic ball manufactured through the cooling step (S600). In order to increase the surface micropore of the filler to be manufactured, A coating layer may be further formed.
For example, the coating layer may be prepared by first coating 35 to 55 parts by weight of a polyvinylidene fluoride resin, 40 to 60 parts by weight of a good solvent, 5 to 10 parts by weight of a poor solvent, 3 to 7 parts by weight in the weight ratio to prepare a polymer solution.
At this time, the polyvinylidene fluoride resin may be a known polyvinylidene fluoride resin having a molecular weight of 500,000 to 550,000 g / mol.
The good solvent is used to dissolve the polyvinylidene fluoride resin. In the present invention, dimethyl acetamide may be used as the good solvent.
The poor solvent is used to adjust the pore size and the porosity of the surface of the coating layer formed on the surface of the microorganism carrier. The poor solvent may include dimethyl phthalate and diethyl phthalate in a ratio of 1: 1: 1.3 by weight.
The pore formation promoter is used to promote pore formation on the surface of the coating layer formed on the surface of the artificial grass filler. The pore formation promoter may include polyvinylpyrrolidone and benzoic acid in a ratio of 1: 1 to 1: : 1.3. ≪ / RTI >
Next, the polymer solution may be heated at 160 to 170 DEG C for 30 to 100 minutes, and then the heated polymer solution may be cooled.
Next, the cooled polymer solution and the fired ball are mixed, and then a phase transfer process is performed to produce a coating layer in the form of a porous film. The phase transfer process is a process in which the polymer is finely dispersed at a temperature higher than the melting point of the polymer A homogeneous melt of a single phase is prepared by melt-blending in a diluent which can be dispersed. The melt is shaped into a flat or hollow fiber membrane and then cooled to induce phase separation. When it is extracted with a diluent, So that a porous membrane can be produced.
In this case,? -Butyrolactone, which is a poor solvent, is used as the diluent, and ethylene glycol is used as an internal coagulation fluid for hollow formation in the production of the porous membrane, Distilled water is used as a non-solvent for the phase transition in the coagulation bath, the internal coagulating liquid is maintained at a temperature range of 30 to 60 ° C, and the phase transfer bath can maintain a temperature range of 50 to 70 ° C.

2, the artificial turf 110 is stacked on the ground 120, and the silk grass 130 is sandwiched between the artificial turf 110 and the artificial turf 110. The artificial turf 110 can be used as a filler for artificial turf, (110) so as to stably fix the artificial turf (110) to the ground (120), and to raise the grass hairs of the artificial turf. The filling material 100 is sprayed on the silk yarn 130 to be sprayed between the artificial turf 110. Thus, except for a portion, the artificial turf 110 is covered by the filler 100.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. It is therefore to be understood that one embodiment described above is illustrative in all aspects and not restrictive.

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100: artificial turf filler 110: artificial turf
120: ground 130: silica sand

Claims (6)

Preparing a vegetable material and an inorganic material (S100);
A plant material crushing step (S200) of crushing the prepared vegetable material;
Drying the pulverized vegetable material to dry the plant material (S300);
The dried vegetable material and inorganic material are mixed, dried and molded to deodorize the smell of grass, and the antibacterial effect on the excrement of animal and the moisturizing property of the filler are improved, so that fine dust in the air can be cleaned and kept in a pleasant environment A mixing and pressing step (S400) of producing a molded body capable of being formed;
A sintering step (S500) of heating and firing the pressed compact; And
And cooling the sintered compact to form a sintered compact (S600)
The vegetable material may be at least one selected from the group consisting of rice hulls, chopping knives, hemp cork, sawdust, rice straw, sugar cane basin, pine needles, and wood pulp woods in the material preparation step (S100). Examples of the inorganic materials include bentonite, , Talc, diatomaceous earth, vermiculite, perlite, vermiculite, montmorillonite, sericite, dolomite and zeolite,
In the vegetable material pulverization step (S200), the vegetable material is pulverized to have a particle diameter of 10 to 2000 mu m,
In the plant material drying step (S300), the pulverized vegetable material is dried at a temperature of 70 to 150 ° C for 1 to 5 hours to dry the pulverized vegetable material so that the water content of the pulverized vegetable material is 5 to 10% by weight Method for manufacturing artificial turf filler.
The method according to claim 1,
In the mixing and molding step S400, the dried vegetable material and the inorganic material are mixed at a weight ratio of 0.1 to 30 parts by weight of the dried vegetable material and 70 to 99.9 parts by weight of the inorganic material, Drying the mixture for a period of time, and then molding the mixture so as to have a particle diameter of 1 to 5 mm by pressure-forming or pressurizing the mixture at a pressure of 50 to 250 kgf / cm ² using a compression molding machine.
3. The method of claim 2,
In the firing step (S500), the internal temperature of the kiln is maintained at 300 to 550 DEG C, the molding is put into the kiln, and the firing is performed for 1 to 10 hours while raising the temperature to 700 to 1300 DEG C,
In the cooling step (S600), the molded body is taken out from the kiln and then left to stand for 1 to 3 hours at a temperature of 250 to 300 DEG C, cooled, and then left to stand at 55 to 65 DEG C for 5 to 15 hours Wherein the method comprises the steps of:
The method of claim 3,
And 100 parts by weight of the plastic balls produced through the cooling step (S600) are further mixed in a weight ratio of 1 to 60 parts by weight of elastic chips,
Wherein the elastic chip has a width, a length and a height of 1 to 5 mm and a specific surface area of 0.0008 to 0.1 m ² / g, respectively, in the absence of an external force.
5. The method of claim 4,
Wherein the fired ball used as a mixture with the fired ball or the elastic chips is mixed with natural grass seeds.
A synthetic turf filler characterized by being produced by the method of any one of claims 1 to 5.

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