KR102672201B1 - Filler for eco-friendly artificial turf and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an eco-friendly filler for artificial turf and a method of manufacturing the same. More specifically, it is safe due to the addition of natural materials such as cork chips, bark chips, seaweed extracts, and natural preservatives, and prevents odors from decay. It relates to fillers for eco-friendly artificial turf that can be prevented and their manufacturing methods.
The filler for eco-friendly artificial turf according to the present invention contains 10 to 50 parts by weight of bark chips, 5 to 20 parts by weight of seaweed extract, 5 to 10 parts by weight of natural preservative, and 5 to 10 parts by weight of natural pest control for 100 parts by weight of cork chips. It is characterized by including.

Description

Filler for eco-friendly artificial turf and manufacturing method thereof}

The present invention relates to an eco-friendly filler for artificial turf and a method of manufacturing the same. More specifically, it is safe due to the addition of natural materials such as cork chips, bark chips, seaweed extracts, and natural preservatives, and prevents odors from decay. It relates to fillers for eco-friendly artificial turf that can be prevented and their manufacturing methods.

In general, artificial turf is widely installed in places where natural light is blocked, where natural grass is difficult to grow due to climate conditions, and where grass management is difficult.

Although this type of artificial turf requires a higher initial construction cost than natural turf, it is semi-permanent, can be used all year round, is easy to maintain, and has an even surface suitable for exercise, so it is widely used in dome stadiums, buildings, schools, playgrounds, etc. It is becoming.

Artificial turf is made by laying artificial turf on top of ground such as ready-mix concrete or compacted gravel, then pouring silica sand between the artificial turf to fix the artificial turf, and spreading rubber chip filler on top of the silica sand to give the artificial turf a certain amount of elasticity. Ensure that the artificial turf is buried in the filler.

In particular, various elastic chips are used as the filler, and chips are mainly made by crushing waste tires and industrial waste rubber with high specific gravity and good elasticity.

An example of this technology is disclosed in Documents 1 to 2 below.

Patent Document 1 contains 1.5 to 14.0% by weight of rosin, 0.5 to 2.5% by weight of inorganic pigment, 30.0 to 40.0% by weight of unvulcanized natural rubber, 8.0 to 10.0% by weight of one or more polymer resins selected from polyethylene resin or polypropylene resin, talc, An elastic filler composition for artificial turf, characterized in that it consists of 30.0 to 45.0% by weight of one or more fillers selected from calcium carbonate and process oil, 2.0 to 2.5% by weight of a crosslinker, 1.0 to 2.3% by weight of a lubricant, and 1.0 to 2.0% by weight of a colorant. It is disclosed about.

Patent Document 2 discloses a method for manufacturing a thermoplastic elastomer chip for artificial turf using a thermoplastic elastomer, in which a styrene-based block copolymer as a first raw material is introduced into a blender and preheated at a temperature of 60 to 120° C. for 1 to 10 minutes. Tea raw material input step; While mixing the first raw material in the blender, 30 to 500 parts by weight of process oil consisting of at least one of paraffinic, naphthenic, and aromatic oils is added to 100 parts by weight of the styrenic block copolymer at a stirring speed of 20 to 100 rpm. A stirring step of stirring for 1 to 20 minutes; Secondary raw materials including an olefin polymer, a filler, a resin stabilizer, and a pigment are added and stirred, wherein in 100 parts by weight of the styrenic block copolymer, the olefin polymer is contained in an amount of 10 to 80 parts by weight, and the filler is contained in an amount of 80 to 600 parts by weight. wealth; A secondary raw material input step of adding the secondary raw material containing 1 to 10 parts by weight of the resin stabilizer and pigment into the blender and stirring it; An extrusion molding step of extruding and molding a mixture containing the first raw material and the second raw material at a temperature of 120 to 280° C. using an extruder; and a cutting step of cooling the extruded mixture simultaneously with the extrusion molding step and cutting it into pieces with a diameter of 0.5 to 3.0 mm.

However, since the conventional technology as described above uses ethylene propylene rubber (EDPM), waste tire chips, recycled rubber chips, or general rubber chips, there is controversy over its harmfulness and the unique smell of rubber is generated, which not only interferes with exercise but also harms the sun. Because it absorbs light and increases the temperature of the stadium, the temperature is higher than the general ground surface, which limits exercise and has the disadvantage of not providing a comfortable exercise environment.

In addition, there is a risk of harmful effects on the environment and the human body due to the detection of heavy metals due to the use of rubber chips, which are waste materials, and the generation of odors caused by substances such as ammonia and formaldehyde.

An example of a technology for solving the above problems is disclosed in Document 3 below.

Patent Document 3 includes rice husk, pulverized kudzu pomace that sticks with the rice husk and prevents the rice husk from floating on the surface of the water when raining or washing, and pulverizing the rice husk and pulverized kudzu pomace by pressing the rice husk and pulverized kudzu pomace with its own weight. A filling layer using an eco-friendly filler for artificial turf containing a natural filler containing red clay that fixes water is disclosed.

However, although the conventional technology as described above uses natural materials such as rice husk and pulverized kudzu residue, there is a problem in that the material decomposes and generates an odor due to insufficient preservative treatment. Additionally, when there is a lot of moisture, there is a problem that moss, weeds, etc. grow on the surface of artificial turf. In addition, there is a problem in that shock absorption is not achieved properly due to lack of elasticity.

Republic of Korea Patent Publication No. 10-1446458 (announced on October 6, 2014) Republic of Korea Patent Publication No. 10-0780229 (announced on November 28, 2007) Republic of Korea Patent Publication No. 10-1077734 (announced on October 27, 2011)

The present invention was developed to solve the problems described above, and its purpose is to provide an eco-friendly filler for artificial turf that is environmentally friendly and has excellent shock absorption by manufacturing it by mixing natural materials such as cork chips and bark chips, and a method for manufacturing the same. There is.

In addition, the purpose of the present invention is to provide an eco-friendly filler for artificial turf and a manufacturing method thereof that can prevent odors caused by rotting bark chips due to the addition of natural preservatives.

In addition, the purpose is to provide an eco-friendly filler for artificial turf that can carbonize cork chips to exhibit its own antibacterial properties and prevent the generation of static electricity, and to provide a method of manufacturing the same.

In addition, the purpose of the present invention is to provide an eco-friendly filler for artificial turf that can suppress the growth of moss, weeds, etc. on the surface of artificial turf by adding a natural pest control agent, and a method for manufacturing the same.

In addition, the purpose is to provide an eco-friendly filler for artificial turf that strengthens the adhesion of materials by adding seaweed extract and a method of manufacturing the same.

In order to achieve the above object, the method of manufacturing an eco-friendly filler for artificial turf according to the present invention includes a cork chip carbonization step of heating and drying the cork chip to remove cellulose and lignin components and carbonize the cork chip; An immersion step of immersing the bark chips in an antibacterial agent containing 10 to 30 parts by weight of yucca extract and 20 to 40 parts by weight of bamboo extract based on 100 parts by weight of water; For 100 parts by weight of cork chips carbonized in the carbonization step, 10 to 50 parts by weight of bark chips immersed in an antibacterial agent in the immersion step, a seaweed extract selected from the group consisting of an extract obtained by hot water extraction of seaweed, or an extract powder from which the extract was concentrated and dried. A mixing and stirring step of mixing and stirring 5 to 20 parts by weight, 5 to 10 parts by weight of Sancho extract, a natural preservative, 5 to 10 parts by weight of rice husk vinegar, a natural pest control agent, and 2 to 5 parts by weight of lignin; And a curing step of drying and surface hardening the mixture stirred in the mixing and stirring step.

In addition, the cork chips in the cork chip carbonization step are characterized by a particle diameter of 3 to 5 mm.

In addition, the cork chips carbonized in the cork chip carbonization step are characterized in that they are formed in a round shape as the carbonized chips rub against each other.

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In addition, the Sancho extract is characterized in that it is prepared by stirring and extracting Sancho pepper and ethanol and then concentrating under reduced pressure.

In addition, the rice husk vinegar is characterized in that it is produced by maturing a solution obtained by condensing smoke, gas, and water vapor generated during the rice husk carbonization process for a certain period of time.

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In addition, the mixing and stirring step is characterized by further comprising 10 to 20 parts by weight of zeolite balls based on 100 parts by weight of cork chips carbonized in the carbonization step.

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In addition, after the cork chip carbonization step, scratches are formed on the surface of the carbonized cork chip using a roller brush.

The filler for eco-friendly artificial turf according to the present invention is characterized in that it is manufactured using the above manufacturing method for the filler for eco-friendly artificial turf.

As described above, the eco-friendly filler for artificial turf and its manufacturing method according to the present invention are manufactured by mixing natural materials such as cork chips and bark chips, so they are environmentally friendly and have excellent shock absorption properties.

Additionally, the addition of a natural preservative has the effect of preventing odors from being generated due to decay of the bark chips.

In addition, by carbonizing the cork chip, it exerts its own antibacterial properties and has the effect of preventing the generation of static electricity.

In addition, the addition of natural pesticides has the effect of suppressing the growth of moss and weeds on the surface of artificial turf.

Additionally, the addition of seaweed extract has the effect of strengthening the adhesion of materials.

1 is a process diagram showing a method of manufacturing filler for eco-friendly artificial turf according to the present invention.
Figure 2 is a photograph of the growth of moss or weeds on artificial turf to which a filler for eco-friendly artificial turf to which a natural pest control agent has been added and a filler for eco-friendly artificial turf to which a natural pest control agent has not been added.

Hereinafter, the most preferred embodiments of the present invention will be described in detail in order to enable those skilled in the art to easily practice the present invention.

The filler for eco-friendly artificial turf according to the present invention contains 10 to 50 parts by weight of bark chips, 5 to 20 parts by weight of seaweed extract, 5 to 10 parts by weight of natural preservative, and 5 to 10 parts by weight of natural pest control for 100 parts by weight of cork chips. Includes.

The cork chip is an elastic natural material and is made by peeling the bark of the cork oak tree. Cork is made of suberin, a hydrophobic substance, and is used in a variety of places due to its unique waterproofing, floating, elasticity, and fire resistance properties.

In particular, the cork chip not only provides elasticity to load but also has heat absorption properties to prevent the temperature from rising excessively. The cork chip preferably has a particle diameter of 3 to 5 mm.

If the particle size of the cork chips is less than 3 mm, the size is too fine, and agglomeration occurs between the cork chips, making it difficult to mix them evenly with other materials. If the particle size exceeds 5 mm, the surface area of the cork chips is too large. Because it is wide, there is a problem that the bonding strength with other materials becomes weak.

Meanwhile, the cork chips are heated and dried at a high temperature to remove cellulose and lignin components and carbonize them, and the carbonized chips can be formed into a round shape by rubbing against each other.

That is, the cork chips are treated at high temperature by indirect heat of a heating dryer, and as a result, the main components of the cork chips, cellulose and lignin, are removed and carbonized. This carbonized cork chip exerts its own antibacterial properties and has the effect of preventing the generation of static electricity.

In addition, while the carbonized cork chips are transferred through a transfer screw, the chips rub against each other and are formed into a round shape. Cork chips formed in a round shape like this are effective in preventing injuries to users.

The bark chips can be cut from coniferous and broad-leaved trees, and preferably have a particle size of 1 to 3 mm so that they can be easily filled between the piles of artificial turf.

At this time, if the bark chip is less than 1 mm, there is a problem that the bark chip is easily lost from the artificial turf pile because the size of the bark chip is too small compared to the transplant gap between artificial turf piles. If it exceeds 3 mm, there is a problem that the bark chip is easily lost from the artificial turf pile. It is not easy to fill bark chips.

If the content of the bark chips is less than 10 parts by weight, its function as a natural material is reduced, and if it exceeds 50 parts by weight, it is not economical due to insufficient yield of the bark chips.

The bark chips, like cork chips, are formed into a round shape by rubbing against each other while being transferred through a transfer screw.

The seaweed extract is one selected from the group consisting of an extract obtained by hot water extraction of seaweed, and an extract powder obtained by concentrating and drying the extract.

The seaweed extract can be a hot water extract of seaweed such as seaweed, kelp, and agar, or an extract powder that has been concentrated and dried. These seaweed extracts contain a large amount of sodium alginate and have a binding function to strengthen the adhesion of materials.

If the content of the seaweed extract is less than 5 parts by weight, the binding effect of the materials is minimal, and if it exceeds 20 parts by weight, economic feasibility decreases, and the content of other ingredients is relatively low, causing a problem of increased viscosity.

The natural preservative serves to prevent decay of organic components due to the use of bark chips, which are natural materials, and is composed of Sancho extract prepared by stirring and extracting Sancho pepper and ethanol and then concentrating under reduced pressure.

Sancho tree is a tree species that grows naturally in mountains and fields throughout Korea, and its fruits are used as a source of cooking oil and various seasonings.

Sancho is the fruit of the Sancho tree. The fruit skin contains 2-4% essential oil, and its main ingredients include dipentene, citronellal, phellandrene, geraniol, and sanshool.

The Sancho extract is extracted by mixing Sancho and ethanol at a weight ratio of 1:10 to 15, stirring the mixture at room temperature for 20 to 25 hours, filtering the extract, and storing the filtrate at 55 to 65°C for 5 to 7 hours. It was manufactured by concentrating under reduced pressure using a vacuum concentrator.

If the content of the Sancho extract is less than 5 parts by weight, the growth inhibition and sterilizing effect on bacteria are reduced, and if it exceeds 10 parts by weight, it inhibits the action of rice husk vinegar, a natural pest control agent added with the Sancho extract.

The natural pest control agent consists of rice husk vinegar prepared by condensing the smoke, gas, and water vapor generated during the rice husk carbonization process and aging the solution for a certain period of time. In particular, during the aging process, the middle layer solution is separated and used while the layers are separated. The solution of the separated middle layer is distilled under reduced pressure and purified to produce rice husk vinegar.

If the content of the rice husk vinegar is less than 5 parts by weight, the effect of inhibiting the growth of moss, weeds, etc. is minimal, and if it exceeds 10 parts by weight, there is a problem of lowering the strength of the filler for artificial turf.

Meanwhile, the filler for eco-friendly artificial turf according to the present invention may further include 2 to 5 parts by weight of lignin.

The lignin is obtained by hydrolyzing lignocellulosic biomass with acid, and can prevent rotting of fillers for artificial turf due to its hard film structure, which inhibits moisture absorption and inhibits fermentation. In addition, it can bind with other added materials to improve the texture of the filler for artificial turf.

If the lignin content is less than 2 parts by weight, the effect of inhibiting moisture absorption is minimal, and if it exceeds 5 parts by weight, the durability of the filler for artificial turf is reduced.

The filler for the eco-friendly artificial turf may further include 10 to 20 parts by weight of zeolite balls.

Zeolite is a type of hydrous aluminum silicate mineral containing alkali metal or alkaline earth metal. There is a large gap in the center, and the correct rules of the network structure are broken, creating gaps in the skeleton. These gaps allow it to function as a molecular sieve. At the same time, it can adsorb a large amount of water.

In particular, zeolite emits far-infrared rays and negative ions, exerts an antibacterial function, and prevents artificial turf fillers from floating in water due to rainwater.

If the zeolite content is less than 10 parts by weight, there is a problem that the water absorption ability and antibacterial function are reduced, and if it exceeds 20 parts by weight, there is a problem that the weight of the filler for artificial turf increases due to the high specific gravity.

Hereinafter, the method of manufacturing filler for eco-friendly artificial turf according to the present invention will be described in detail as follows.

As shown in Figure 1, the method for manufacturing eco-friendly filler for artificial turf according to the present invention includes a cork chip carbonization step (S100), a mixing and stirring step (S200), and a curing step (S300).

The cork chip carbonization step (S100) is a step of heating and drying the cork chip to remove fiber and lignin components and carbonize it.

That is, in the cork chip carbonization step (S100), the cork chip is treated at high temperature by indirect heat of a heating dryer, thereby removing and carbonizing the cellulose and lignin components, which are the main components of the cork chip. In addition, antibacterial and deodorizing properties are achieved by carbonizing the cork chip through the cork chip carbonization step (S100).

The mixing and stirring step (S200) is performed by extracting 10 to 50 parts by weight of bark chips immersed in an antibacterial agent, a hydrothermal extract of seaweed, or concentrated dry extraction of the extract, based on 100 parts by weight of cork chips carbonized in the cork chip carbonization step (S100). This is a step of mixing and stirring 5 to 20 parts by weight of seaweed extract, which is selected from powders, 5 to 10 parts by weight of Sancho extract, a natural preservative, and 5 to 10 parts by weight of rice husk vinegar, a natural pest control agent. Additionally, in the mixing and stirring step (S200), 2 to 5 parts by weight of lignin and 10 to 20 parts by weight of zeolite balls may be further mixed. At this time, the Sancho extract is manufactured by stirring and extracting Sancho and ethanol and then concentrating under reduced pressure, and the rice husk vinegar is manufactured by maturing the solution obtained by condensing the smoke, gas, and water vapor generated during the rice husk carbonization process for a certain period of time. .

In this way, in the mixing and stirring step (S200), filler for artificial turf can be created by adding cork chips, bark chips, and other natural materials to the stirrer.

The curing step (S300) is a step of drying and surface hardening the mixture stirred in the mixing and stirring step (S200).

In the curing step (S300), it can be processed by natural drying or hot air drying, and the filler for artificial turf to which various materials are attached and fixed is cured to prevent the materials from separating due to external shock or vibration. In particular, if the fillers are stuck to each other during the curing step (S300), the fillers can be separated from each other by rotating the fillers in a stirrer at a speed of 40 to 60 rpm for about 5 minutes.

Meanwhile, the present invention includes an immersion step of immersing the bark chips in an antibacterial agent containing 10 to 30 parts by weight of yucca extract and 20 to 40 parts by weight of bamboo extract, based on 100 parts by weight of water, prior to the step of mixing and stirring the bark chips. It can be done.

That is, before the step of mixing and stirring the bark chips, the antibacterial and deodorizing performance of the bark chips is greatly improved by immersing the bark chips in an antibacterial agent containing yucca extract and bamboo extract.

Yucca is a plant belonging to the agave family that grows in North America, and the U.S. FDA has approved its use as a natural flavoring agent or food flavoring agent in the form of syrup or tablets. Because these yucca can be easily grown or collected in large quantities, they can be purchased very cheaply.

The yucca extract can be obtained using a hydrothermal extraction method of applying heat using distilled water or a solvent extraction method of extracting using an organic solvent, preferably using a hot water export method. This yucca extract has excellent antibacterial and microbial inhibition properties.

If the content of the yucca extract is less than 10 parts by weight, the antibacterial and harmful microorganism inhibition effects are minimal, and if it exceeds 30 parts by weight, there is a problem of the bark chip becoming excessively wet.

The bamboo extract is obtained by hot water extraction of bamboo stems and leaves, and has strong antibacterial activity and thermal stability.

If the content of the bamboo extract is less than 20 parts by weight, the antibacterial and deodorizing effects are minimal, and if it exceeds 40 parts by weight, there is a problem of poor economic feasibility due to the excess content.

Meanwhile, after carbonizing the cork chip, scratches can be formed on the surface of the carbonized cork chip using a roller brush.

That is, by forming scratches on the surface of the cork chip using the roller brush, the adhesion of the mixture can be increased and the mixture can be prevented from peeling.

Hereinafter, the present invention will be explained in more detail by examples. However, the following examples only illustrate the present invention, and the content of the present invention is not limited to the following examples.

[Example 1]

Cork chips were heated and dried to remove cellulose and lignin components and carbonized to produce carbonized cork chips.

Next, based on 100 parts by weight of cork chips, 30 parts by weight of bark chips, 10 parts by weight of seaweed extract, 5 parts by weight of natural preservative (Japanese pepper extract), and 5 parts by weight of natural pest control agent (rice husk vinegar) were added to the stirrer and stirred. .

Afterwards, the stirred mixture was dried and surface hardened to prepare an eco-friendly filler for artificial turf.

[Example 2]

An eco-friendly filler for artificial turf was prepared in the same manner as in Example 1, except that 7 parts by weight of a natural preservative and 7 parts by weight of a natural pest control agent were added.

[Example 3]

An eco-friendly filler for artificial turf was prepared in the same manner as in Example 1, except that 10 parts by weight of a natural preservative and 10 parts by weight of a natural pest control agent were added.

[Comparative Example 1]

An eco-friendly filler for artificial turf was manufactured in the same manner as in Example 1, except that no natural preservative was added.

[Comparative Example 2]

An eco-friendly filler for artificial turf was manufactured in the same manner as in Example 1, except that the natural pest control agent was not added in Example 1.

[Test Example 1]

Odor suppression effect of fillers for eco-friendly artificial turf manufactured by Examples 1 to 3 and Comparative Examples 1 to 2

The eco-friendly artificial turf filler specimens prepared according to Examples 1 to 3 and Comparative Examples 1 to 2 were applied on an artificial turf structure made of a base layer, artificial turf, and a silica sand layer, at a temperature of 25°C and A test of spraying water twice a week under 60% humidity conditions was conducted continuously for 6 months and then measured using a sensory test method based on smell. The number of people participating in the test was 15. The sensory evaluation of the odor was done in 5 levels (absent: 5 points, slightly present: 4 points, average: 3 points, severe: 2 points, very severe: 1 point), and the total scores were added up and converted to an average score. . The results for Test Example 1 are shown in Table 1 below.

division Sensory evaluation Example 1 4.6 Example 2 4.7 Example 3 4.8 Comparative Example 1 3.6 Comparative Example 2 4.6

As shown in Table 1, Examples 1 to 3 and Comparative Example 2 to which natural preservatives were added were evaluated to have significantly less odor than Comparative Example 1, and among Examples 1 to 3, the content of natural preservatives was Many of Example 3 were rated as close to odorless. In addition, Comparative Example 1, in which no natural preservatives were added, was evaluated to have a relatively strong odor.

[Test Example 2]

Activity inhibitory effect on decay microorganisms of fillers for eco-friendly artificial turf prepared by Examples 1 to 3 and Comparative Examples 1 to 2

To investigate the content of microorganisms adsorbed on the eco-friendly artificial turf fillers prepared in Examples 1 to 3 and Comparative Examples 1 to 2, the samples were plated on nutrient agar medium using a three-stage dilution method and cultured at 35°C for 2 days. Afterwards, it was investigated with a colony counter.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Microbial count (cfu/g) 2.1ㅧ10 ² 1.9ㅧ10 ² 1.5ㅧ10 ² 3.0ㅧ10 ⁴ 2.2ㅧ10 ²

As shown in Table 2, Examples 1 to 3 and Comparative Example 2 to which natural preservatives were added showed a relatively low content of microorganisms compared to Comparative Example 1 to which natural preservatives were not added. It can be seen that preservatives are effective in suppressing the activity of decaying microorganisms in fillers for eco-friendly artificial turf.

[Test Example 3]

Effect of suppressing moss or weed growth of fillers for eco-friendly artificial turf manufactured by Examples 1 to 3 and Comparative Examples 1 to 2

The eco-friendly artificial turf filler specimens prepared according to Examples 1 to 3 and Comparative Examples 1 to 2 were applied on an artificial turf structure made of a base layer, artificial turf, and a silica sand layer. Afterwards, the growth of moss or weeds was observed for 3 months.

As a result, as shown in Figure 2, in Examples 1 to 3 and Comparative Example 1 to which natural pesticides were added, no occurrence of moss or weeds was confirmed, and in Comparative Example 2 to which natural pesticides were not added, weed growth was not observed. I was able to confirm that it had been done.

Shock absorption (%) Vertical strain (mm)

2

47.4 5.4 3

57.7 7.3 4

59.3 7.5 5

62.3 7.6 6

65 7.8 7

67.2 7.9 8

69.5 8.8 9

71.8 10.1

1m로 하였으며, 인조잔디의 파일 사이에는 파일의 하부를 지지하기 위한 규사가 20kg이 도포되어 있다. 낙하하는 추의 중량은 20kg, 낙하 높이는 (55

5)mm로 하였으며, 결과값은 세 번 실험하여 평균값으로 환산한 것이다.The filler for eco-friendly artificial turf according to the present invention was tested for shock absorption. At this time, the area of the test piece is 1m

It is set at 1m, and 20kg of silica sand is applied between the artificial turf piles to support the lower part of the piles. The weight of the falling weight is 20kg, and the falling height is (55kg)

5)mm, and the results were converted to the average value after three experiments.

According to KS standards, shock absorbency must be more than 50% and vertical deformation length must be 3mm to 10mm. According to international standards, it is different for general playgrounds and playgrounds used by professional athletes. In the case of a general playground, the standard is shock absorption of 57% to 68% and the vertical deformation length is 4mm to 11mm, and in the case of a playground used by professional athletes, the shock absorption is 62% to 68% and the vertical deformation length is 4mm to 11mm. It must satisfy 4mm~10mm.

As shown in [Table 3], the eco-friendly filler for artificial turf according to the present invention was tested for shock absorption, and as a result, when 2 kg of the filler of the present invention was applied per unit area, the shock absorbency of the artificial turf was lower. 47.4%, the vertical deformation length was measured to be 5.4 mm. Although the vertical deformation length condition was satisfied, the shock absorption was less than 50%, which did not even meet the KS standard.

When 3kg to 8kg of the filler of the present invention is applied per unit area, the shock absorption and vertical deformation length of artificial turf meet the KS standard standards.

When 3kg to 7kg of the filler of the present invention is applied per unit area, the shock absorption and vertical deformation length of artificial turf satisfies the general playground standards among international standards.

When 5kg to 7kg of the filler of the present invention is applied per unit area, shock absorption and vertical deformation length meet the international standards for playgrounds used by professional athletes.

Therefore, the eco-friendly artificial turf according to the present invention can be applied with 3kg to 8kg of filler per unit area to satisfy the KS standard, and to satisfy the general playground standard among international standards, 3kg to 7kg of filler can be applied per unit area. In order to meet international standards for playgrounds used by professional athletes, 5kg to 7kg of filler per unit area can be applied to provide artificial turf that meets the standards.

Although the present invention has been described with a focus on preferred embodiments with reference to the accompanying drawings, it is clear to those skilled in the art that various modifications can be made without departing from the scope of the present invention from this description. Accordingly, the scope of the present invention should be construed by the appended claims to include examples of many such modifications.

Claims (11)

A cork chip carbonization step in which the cork chips are heated and dried to remove fiber and lignin components and carbonize them;
An immersion step of immersing the bark chips in an antibacterial agent containing 10 to 30 parts by weight of yucca extract and 20 to 40 parts by weight of bamboo extract based on 100 parts by weight of water;
For 100 parts by weight of cork chips carbonized in the carbonization step, 10 to 50 parts by weight of bark chips immersed in an antibacterial agent in the immersion step, a seaweed extract selected from the group consisting of an extract obtained by hot water extraction of seaweed, or an extract powder from which the extract was concentrated and dried. A mixing and stirring step of mixing and stirring 5 to 20 parts by weight, 5 to 10 parts by weight of Sancho extract, a natural preservative, 5 to 10 parts by weight of rice husk vinegar, a natural pest control agent, and 2 to 5 parts by weight of lignin; and
A method of manufacturing an eco-friendly filler for artificial turf, comprising a curing step of drying and surface hardening the mixture stirred in the mixing and stirring step.
In claim 1,
A method of manufacturing an eco-friendly filler for artificial turf, characterized in that the cork chips in the cork chip carbonization step have a particle size of 3 to 5 mm.
In claim 1,
A method of manufacturing filler for eco-friendly artificial turf, characterized in that the carbonized cork chips in the cork chip carbonization step are formed into a round shape as the carbonized cork chips rub against each other.
In claim 1,
A method of producing an eco-friendly filler for artificial turf, characterized in that the Sancho extract is produced by stirring Sancho pepper and ethanol and then concentrating under reduced pressure.
In claim 1,
The rice husk vinegar is a method of manufacturing an eco-friendly filler for artificial turf, characterized in that the solution obtained by condensing the smoke, gas, and water vapor generated during the rice husk carbonization process is aged for a certain period of time.
In claim 1,
The mixing and stirring step is a method of manufacturing an eco-friendly filler for artificial turf, characterized in that it further includes 10 to 20 parts by weight of zeolite balls based on 100 parts by weight of cork chips carbonized in the carbonization step.
In claim 1,
A method of manufacturing an eco-friendly filler for artificial turf, characterized in that after the cork chip carbonization step, scratches are formed on the surface of the carbonized cork chip using a roller brush.
An eco-friendly filler for artificial turf, characterized in that it is manufactured by the method for producing an eco-friendly filler for artificial turf according to any one of claims 1 to 7.
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