KR101737584B1 - The process of manufacture and the filler material for the grass, using natural silica sand or sawdust. - Google Patents

Abstract

The present invention relates to a filling material for artificial turf using sawdust or natural silica sand and a method for producing the same. More particularly, the filling material for artificial turf using sawdust or natural silica sand and the method for producing the same prevent the filling material from being deformed at high temperature by forming a coating layer on a surface of natural silica sand or sawdust, and prevent deformation and odor generation by using natural silica sand or sawdust, which are harmless to a human body, as a base. Moreover, the new type of filling material for artificial turf using sawdust or natural silica sand and the method for producing the same are capable of preventing deformation in a shape of the filling material by reflecting heat transmitted to the filling material without absorbing the heat using inorganic fine pigment, and capable of lowering temperature of an entire artificial turf layer through heat dissipation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filler for artificial turf using sawdust or natural silica sand and a method for producing the same.

The present invention relates to a filling material for artificial turf using sawdust or natural silica sand and a method for producing the same, and more particularly, to a method for forming a coating layer on the surface of natural silica or sawdust to prevent the filling material from being deformed at high temperatures, Or sawdust to prevent deformation and odor from occurring and at the same time to prevent the deformation of the filler form by reflecting the heat transferred to the filler material without absorbing the heat using the inorganic fine pigment, The present invention relates to a filling material for artificial turf using a new type of sawdust or natural silica sand, which can lower the temperature of the artificial turf, and a manufacturing method thereof.

Soccer fields and baseball fields are planted with natural grass to prevent injury and dust. Natural grass is soft and lively, but it takes a considerable amount of time to grow to a certain size and has the disadvantage of high maintenance costs. Therefore, artificial turf is often installed on a soccer field and a ball park.

On the other hand, on top of artificial turf, fillers are generally filled to provide a cushioning feeling to athletes playing.

Since the waste tire and EPDM (Ethylene Propylene Diene Monomer) are mainly recycled materials for automobiles, it is inconvenient to separate and remove harmful components such as lead and asbestos in advance.

In addition, such fillers have a problem in that they are uneven in particle size, are poor in permeability, are dusty, so they are buried in balls, human bodies, shoes, clothes, and are harmful to the respiratory tract and, in severe cases, cause pneumoconiosis.

Meanwhile, in recent years, in order to solve the above-mentioned problems, the use of materials such as waste tire rubber is prevented, and fillers using natural materials have been developed.

In the conventional construction of such a filler, a filler of an environmentally friendly material and an artificial grass using the filler are disclosed in Patent Registration No. 10-0749075 (registered on Aug. 07, 2007)

A filler material provided between artificial grass leaves exposed to the surface of artificial turf,

Wherein the filler is composed of a natural or recycled cork chip and a coconut chip made of solid granules having a particle size of 1 mm to 20 mm in combination with a non-toxic adhesive.

Patent Registration No. 10-1163067 (registered on June 29, 2012) with other prior arts The freeze-preventing filler for artificial turf and the method for producing the same,

In a freeze-preventing filler used as a filler of an artificial turf structure,

The filler material,

A weight material comprising at least one of calcium carbonate and silica sand;

An additive comprising at least one of chaff, sawdust, coco peat, coir, natural fiber, pit, peat moss and cork;

And an adhesive comprising at least one of natural rubber, synthetic rubber, urethane and synthetic resin, wherein the additive is immersed in a propylene glycol diluent for a certain period of time to contain the propylene glycol.

The actual material of the filler material produced through the above-described constitution is as follows.

                           <Photographic images of filling materials>

However, the filling material having the above-mentioned structure can provide the buffering force of the artificial turf pitch at the time of initial installation or the purpose of preventing injury during the game. However, if the filling material is exposed to the external environment for a long period of time, There is a problem that it can not exert the desired effect of the filling material as described above.

&Lt; Photos of filler materials deformed by high temperature >

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method and apparatus for preventing the deformation of the filler material even when the filler material is exposed to the external environment for a long time, It is able to maintain the durability, elasticity and economy of filling materials and it is possible to use artificial grass such as sawdust or natural silica sand which enables to enjoy exercise in a pleasant environment at low temperature by suppressing dust generation by using eco-friendly material such as natural silica or sawdust And a method of manufacturing the same.

It is another object of the present invention to provide a method for manufacturing a fine silica powder, which comprises applying a coating layer coated on a surface of sawdust or natural silica sand with a fine powder of an infrared reflective ceramic based inorganic fine pigment having a fine powder size composed of heat- A filler for artificial turf using a new type of sawdust or natural silica sand which can reduce the temperature of the entire artificial turf layer due to the heat dissipation effect while preventing the deformation of the filler material by reflecting the heat transmitted to the filler material without absorbing it And a manufacturing method thereof.

It is an object of the present invention to provide a filling material which provides a buffering force to artificial turf,

The filling material may be formed by coating a coating layer selected from natural rubber, synthetic rubber, urethane, synthetic resin, and ceramic inorganic fine colorant (infrared reflective ceramic colorant) on the surface of sawdust or natural silica sand using a coating apparatus Characterized by the filling of artificial turf with sawdust or natural sand.

The coating apparatus includes a tank 10 in which a door 11 for inputting and discharging natural silica sand is installed at one side, a hopper-shaped lower part and a connecting pipe 12 at a central part thereof;

A mesh (20) detachably seated within the case (10);

A plurality of spray nozzles 30 partially inserted into the case 10 to spray the coating liquid;

And a blowing fan 40 connected to the connection pipe 12 of the case 10 by a hose 13 to supply air into the case 10. [

Wherein the ceramic inorganic fine pigment comprises 30 to 60 parts by weight of any one emulsion of an acrylic resin emulsion, a silicone or acrylic urethane emulsion, 0.5 to 1.5 parts by weight of a defoaming agent, 0.3 to 1 part by weight of a dispersant, 8 to 28 parts by weight of water, 20 to 30 parts by weight of titanium oxide, 3 to 10 parts by weight of titanium dioxide and 0.1 to 0.5 parts by weight of an inorganic fine colorant (infrared reflective ceramic colorant).

The ceramic inorganic fine pigment is a nano-sized infrared reflective ceramic pigment.

On the other hand, a method of manufacturing a filling material for providing buffering force to artificial turf,

(S1) of putting a certain amount of natural silica sand into the coating apparatus;

A primary drying step (S2) for drying the surface of the natural silica sand fed by driving a fan connected to the coating apparatus;

A first coating step (S3) of spraying the coating liquid through a spray nozzle formed in the coating apparatus;

A secondary drying step (S4) of drying the coating liquid coated on the surface of the natural silica sand;

A second coating step (S5) in which the surface of the first coated natural silica sand is sprayed with a coating solution to cover the surface;

A tertiary drying step (S6) of drying the coating liquid coated on the surface of the natural silica sand;

A UV coating step (S7) of spraying a UV curable coating on the surface of the coated natural silica filler;

And a coating finishing step (S8) of discharging the coated natural silica sand filler from the coating apparatus after drying. The method of manufacturing filler for artificial turf using natural silica sand can be accomplished by this method.

The coating apparatus 100 operates the blowing fan 40 in a state where the door 11 of the case 10 is opened and a certain amount of natural silica sand is put into the spraying nozzle 30, The coating liquid is sprayed at a predetermined interval, thereby coating and drying the surface of the natural silica sand repeatedly.

As described above, since the filler for artificial turf using sawdust or natural silica sand according to the present invention has a particle size of sawdust or natural silica sand, it is uniform in size to improve water permeability and can provide a constant buffering force regardless of its position. And the flatness of the ground is good, so that there is an effect of preventing injuries during the game.

In addition, the filling material of the present invention maintains the shape of the natural silica sand even in a high temperature environment such as summer, thereby solving the problems such as deformation and melting, thereby maintaining the condition at the time of installation without lowering the buffering force.

In addition, since the filler is coated on the surface of sawdust or natural silica, which is an environmentally friendly material harmless to human body, it is possible to prevent a secondary infection that may occur due to a contaminated filler during an exercise.

In addition, the filler is composed of a fine powder of infrared-reflective ceramic-based inorganic fine pigment having a fine powder size and heat-shading performance of solar reflection and radiation function on the surface of sawdust or natural silica sand so that the heat transmitted to the filler material is reflected without absorbing, It is possible to prevent deformation of the artificial turf layer and reduce the temperature of the artificial turf layer through the heat dissipation effect.

1 is a perspective view of a coating apparatus for coating a filling material for artificial turf using sawdust or natural silica sand according to the present invention
2 is a cross-sectional view of a coating apparatus for coating fillers for artificial turf using sawdust or natural silica sand according to the present invention
3 is an exploded perspective view of a mesh portion of a coating apparatus for coating a filling material for artificial turf using sawdust or natural silica sand according to the present invention
4 is a block diagram showing a method for producing a filler for artificial turf using sawdust or natural silica sand according to the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It does not mean anything.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user, operator It should be noted that the definitions of these terms should be made on the basis of the contents throughout this specification.

1 is a perspective view of a coating apparatus for coating a filler material for artificial turf using sawdust or natural silica sand according to the present invention and FIG. 2 is a perspective view of a coating material for artificial turf filler using sawdust or natural silica sand according to the present invention. Fig. 3 is an exploded perspective view of a mesh portion of a coating apparatus for coating a filler for artificial turf using sawdust or natural silica sand according to the present invention, and Fig. 4 is an exploded perspective view of a sawing or natural FIG. 1 is a block diagram showing a method for manufacturing a filler for artificial turf using sandpaper.

As shown in the drawing, the filler for artificial turf using sawdust or natural silica sand according to the present invention is a natural rubber or synthetic resin, ceramic colorant, and a plasticizer. The present invention also relates to a method for producing the same.

The sawdust or the natural silica sand constituting the filling material for artificial turf may be formed in a granular size having a particle diameter ranging from about 0.4 mm to 3.5 mm.

In addition, the method for manufacturing a filler for artificial turf according to the present invention comprises the steps of: (S1) injecting a certain amount of natural silica or sawdust into a coating apparatus in order to provide a buffering force to artificial turf; A primary drying step (S2) of drying the surface of the natural silica sand or sawdust which is driven by a fan connected to the coating apparatus; A first coating step (S3) of spraying the coating liquid through a spray nozzle formed in the coating apparatus; A secondary drying step (S4) of drying the coating liquid coated on the surface of natural silica sand or sawdust; A second coating step (S5) in which the surface of the first coated natural silica sand or sawdust is sprayed with a coating solution to cover the surface; A third drying step (S6) of drying the coating liquid coated on the surface of natural silica sand or sawdust; A UV coating step (S7) of spraying a UV curable coating on the surface of the coated natural silica sand or sawdust filler; And a coating finishing step (S8) of discharging the coated natural silica sand or sawdust filler after drying from the coating apparatus.

The filling material is formed by forming a coating layer selected from natural rubber, synthetic rubber, urethane, synthetic resin, and nanosized inorganic colorant on a surface of sawdust or natural silica sand.

The nanosized inorganic colorant (infrared reflective ceramic colorant) of the coating layer may form a coating layer by spraying 100% of the inorganic fine pigment. Preferably, the coating layer is formed of an acrylic resin emulsion, a silicone or acrylic urethane emulsion 30 to 60 parts by weight of any one emulsion, 0.5 to 1.5 parts by weight of a defoaming agent, 0.3 to 1 part by weight of a dispersant, 8 to 28 parts by weight of water, 20 to 30 parts by weight of a filler, 3 to 10 parts by weight of titanium dioxide, And 0.1 to 0.5 parts by weight of a pigment (Nano-sized inorganic colorant, infrared reflective ceramiccolorant).

At this time, the inorganic fine pigment is preferably a nano-sized infrared reflective ceramic pigment

As described above, the inorganic fine pigment is sprayed on the surface of natural silica or sawdust to provide a coated filler material, thereby preventing the heat transferred to the filler material from being absorbed and reflected to prevent deformation of the filler material form, And the temperature of the whole can be lowered.

On the other hand, the particle size of the natural silica sand or sawdust is preferably about 0.4 mm to 3.5 mm. However, the grain size of the natural silica sand or sawdust is not limited thereto.

The filler according to the present invention may be formed into a particle shape having a predetermined size (about 0.7 to 3.5 mm) to improve the drainage property and the buffering force by forming a coating layer on the surface of sawdust or natural silica sand, . The photographs of these fillings are as follows.

  <Photographic images of filler materials using natural silica sand>

On the other hand, the filling material formed by forming the coating layer on the surface of sawdust or natural silica sand as described above is formed by the coating apparatus 100.

As shown in FIGS. 1 and 2, the coating apparatus 100 includes a door 11 for injecting and discharging sawdust or natural silica sand, and a tank 11 having a bottom in the form of a hopper and having a connecting pipe 12 formed at a central portion thereof. A plurality of spray nozzles 20 which are partially inserted into the case 10 to spray the coating liquid, and a plurality of spray nozzles 20, And a blowing fan 40 connected to the connection pipe 12 of the case 10 by a hose 13 to provide air into the case 10. [

In addition, the mesh 30 is detachably assembled to the lower portion of the case 10 in order to easily discharge the filling material after the natural silica sand or sawdust is coated for coating.

3, the mesh 30 is integrally formed with a mesh net 32 having a downward spherical shape inside a circular frame 31, and a plurality of through holes (not shown) are formed in the frame 31 33 are integrally formed.

The mesh 30 is firmly assembled to the case 10 by using the fixed band 34 in a state of being placed inside the case 10 so that the mesh 30 can be moved or shaken by the strong wind flowing from the lower part of the mesh 30. [ .

The fixed band 34 has the same width as the frame 31 of the mesh 30 and has the same number of locking projections 35 as the through holes 33 formed in the frame 31 on one side thereof.

A seating jaw 14 is formed at a portion of the case 10 where the inner mesh 30 is seated and is formed with a tortuous coupling hole 15 so that the mash 30 is installed at an accurate position.

That is, the mesh 30 is opened on the door 11 of the case 10 and is seated on the seating jaw 14, and the through hole 33 and the fastening hole 15 are aligned in the same line, The fastening band 34 is positioned on the upper portion and the fastening protrusion 35 is inserted into the fastening hole 15 through the through hole 33 to turn the fastening band 34, And moves to one side of the fastening hole 15 to firmly assemble the mash 30 located between the fastening band 34 and the seating jaw 14.

Even if natural sand or sawdust, which is contained in the mesh, blows in a tornado manner due to strong wind blowing from the lower portion of the case 10 due to such a rigid assembling state, the assembling position of the mash 30 is firmly maintained, Lt; / RTI &gt;

The spray nozzle 20 is fixed to the case 10 at a central portion thereof and is installed to spray the coating liquid into the case 10 and is connected to the coating liquid reservoir (not shown) by a hose 21, So that the coating solution can be sprayed.

A plurality of the injection nozzles 20 are formed on the upper and lower sides of the case 10 so that the blowing fan 40 formed at the lower portion of the case 10 drives the saw blades So that the coating liquid can be uniformly sprayed on the surface.

The blowing fan 40 is connected to the connection pipe 12 formed at the lower part of the case 10 by a hose 13 to supply hot air or cold air into the case 10.

Next, a method for manufacturing a filler for artificial turf using natural silica sand or sawdust according to an embodiment of the present invention will be described step by step with reference to the flowchart shown in FIG.

<Inputting sawdust or natural silica sand coating device> (S1)

A certain amount of sawdust or natural silica sand is put into the upper part of the mesh installed in the case of the coating apparatus and then the door is sealed.

&Lt; Primary drying > (S2)

By driving the connecting pipe of the case and the blowing fan connected by the hose, strong winds are blown into the case by tornado method, and the sawdust or natural silica sand contained in the mesh is blown to the upper part of the case to dry the sawdust or natural silica sand.

&Lt; Liquid rubber primary injection > (S3)

As described above, when the sawdust or natural silica sand charged into the case is blown out in a tornado manner, the coating liquid is sprayed in the form of fine particles through a plurality of spray nozzles to uniformly coat the surfaces of the floating natural silica or sawdust.

&Lt; Second drying > (S4)

The spraying of the coating liquid from the spray nozzle is stopped and the blowing fan is continuously operated to suspend the surface of the sawdust or natural silica sand with the liquid rubber coating liquid coated thereon so that the coating liquid dries on the surface of the natural silica sand or sawdust.

&Lt; Secondary injection of liquid rubber > (S5)

As described above, the surface of the natural silica sand or sawdust is coated with the coating liquid through the spray nozzle again so that the surface of the first coated sawdust or natural silica sand is coated with the second liquid rubber.

&Lt; Third drying > (S6)

The spraying of the coating liquid of the spray nozzle is stopped and the blowing fan is continuously operated to dry the secondarily coated natural silica or sawdust.

&Lt; UV coating > (S7)

A UV coating liquid is sprayed onto the surface of the filling material formed by coating the surface of the natural silica sand or sawdust with the coating liquid through the injection nozzle and dried and coated.

<Discharge and completion> (S8)

After stopping the blowing fan and removing the door opening and fixing band, the mesh is moved to the outside of the case to discharge the finished filling material.

In addition, the above-mentioned process is continuously performed to produce a filler in an amount to be produced.

An example of a form in which the filling material prepared as described above is applied to artificial turf is shown in the following photograph.

    <Picture showing filling material applied to artificial turf>

By directly coating the surface of the sawdust or natural silica sand with the coating apparatus as described above, the coating liquid can be maintained even in a high temperature environment such as summer, so that the filler can be maintained without being deformed. There is a feature that can be maintained without.

In addition, by using sawdust or natural silica sand, which is an eco-friendly material, there is no odor and harmless to human body.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that the claims fall within the scope of the claims.

10: Case 11: Door
12: Connector 13: Hose
14: seating chin 15: fastening hole
20: jet nozzle 30: mesh
31: frame 32: mesh network
33: Through hole 34: Fixing strip
35: stopping device 40: blowing fan

Claims (6)

Claims [1] A filling material for providing an artificial turf with a buffering force,
The filler material,
A single coating layer selected from natural rubber, synthetic rubber, urethane, synthetic resin, and ceramic inorganic fine colorant (infrared reflective ceramic colorant) is coated on the surface of sawdust or natural silica sand using a coating apparatus,
The coating apparatus (100)
A case 10 in the form of a tank in which a door 11 for inputting and discharging natural silica sand or sawdust is installed at one side, and a connecting pipe 12 is formed at the center of the door 11 in the form of a hopper;
A mesh 20 which is detachably mounted in the case 10 and has a mesh net 32 integrally formed in the inside of a circular frame 31 and having a downward spherical shape;
A plurality of spray nozzles 30 partially inserted into the case 10 to spray the coating liquid;
And a blowing fan (40) connected to the connection pipe (12) of the case (10) by a hose (13) to supply air into the case (10) Filling material.
delete The method according to claim 1,
Wherein the ceramic inorganic fine pigment comprises 30 to 60 parts by weight of any one emulsion of an acrylic resin emulsion, a silicone or acrylic urethane emulsion, 0.5 to 1.5 parts by weight of a defoaming agent, 0.3 to 1 part by weight of a dispersant, 8 to 28 parts by weight of water, 20 to 30 parts by weight of titanium dioxide, 3 to 10 parts by weight of titanium dioxide, and 0.1 to 0.5 parts by weight of an inorganic fine pigment (infrared reflective ceramic colorant). Filling material.
The method according to claim 1,
Wherein the ceramic inorganic fine pigment is a nano-sized infrared reflective ceramic pigment. The filler for artificial turf using sawdust or natural silica sand.
A method for manufacturing a filler for artificial turf using sawdust or natural silica sand according to claim 1,
(S1) of putting a certain amount of natural silica sand into the coating apparatus;
A primary drying step (S2) for drying the surface of the natural silica sand fed by driving a fan connected to the coating apparatus;
A first coating step (S3) of spraying the coating liquid through a spray nozzle formed in the coating apparatus;
A secondary drying step (S4) of drying the coating liquid coated on the surface of the natural silica sand;
A second coating step (S5) in which the surface of the first coated natural silica sand is sprayed with a coating solution to cover the surface;
A tertiary drying step (S6) of drying the coating liquid coated on the surface of the natural silica sand;
A UV coating step (S7) of spraying a UV curable coating on the surface of the coated natural silica filler;
A coating finishing step (S8) of discharging the dried natural silica filler after drying from the coating apparatus; , &Lt; / RTI &
The coating apparatus (100)
A case 10 in the form of a tank in which a door 11 for inputting and discharging natural silica sand or sawdust is installed at one side, and a connecting pipe 12 is formed at the center of the door 11 in the form of a hopper;
A mesh 20 which is detachably mounted in the case 10 and has a mesh net 32 integrally formed in the inside of a circular frame 31 and having a downward spherical shape;
A plurality of spray nozzles 30 partially inserted into the case 10 to spray the coating liquid;
And a blowing fan (40) connected to the connection pipe (12) of the case (10) by a hose (13) to supply air into the case (10) Method for manufacturing filler material. delete

Images