KR102063965B1 - elastic pavement material using cork chip and construction method of elastic pavement - Google Patents

Abstract

The present invention relates to an elastic packaging material composition using a cork chip and to an elastic packaging construction method and, more specifically, to an elastic packaging material composition with excellent durability by reinforcing the strength of the coke chip and to an elastic packaging construction method. The elastic packaging material composition of the present invention comprises: 10 to 50 parts by weight of a binder; and 5 to 20 parts by weight of an additive including a shell with respect to 100 parts by weight of the surface-coated cork chip.

Description

Elastic pavement material using cork chip and construction method of elastic pavement}

The present invention relates to an elastic packaging composition and an elastic packaging method using a cork chip, and more particularly, to an elastic packaging composition and an elastic packaging method having excellent durability by reinforcing the strength of the cork chip.

In general, the trails and bicycle paths have been created to improve the convenience and health of the residents, and the trails and the bicycle roads have boundary widths installed on both sides of the landscape and trees to expose the natural soil. When constructing bicycle roads or artificially constructing them, most of them are installed by speaking on the ground using a sidewalk block made of cement or by placing them on the ground using concrete and asphalt concrete.

Conventional trails and bicycle paths that expose natural soils have the drawback that the soil is washed away by rain in rainy weather and the trails are easily lost, resulting in frequent maintenance. The trails and bicycle paths that are constructed with sidewalk blocks, concrete and asphalt, etc. Although there is an advantage of excellent durability and easy construction, there was a problem that a large injury occurs in the body even when a user falls into a negligence or a light collision of the user.

In order to solve this problem, a rubber tire, crushed rubber tire, and silica sand and an adhesive are mixed at a predetermined ratio to form a packaging material having a certain length and width, and then an adhesive is applied to the asphalt or concrete paving surface. In addition, the molded packaging material is double-packed to promote safety of users, but dust or odor is severely generated from rubber chips, and harmful substances are emitted from the waste tires. In addition, some products contain heavy metals, there was a problem that environmental pollution occurs.

Accordingly, in recent years, the use of cork crushed material is excellent in elasticity, water permeability or drainage performance, but the environmentally friendly road paving material that can be eco-friendly pavement trend is being used a lot. At this time, when the pure cork chip is crushed and used directly on the road pavement, there is a problem that the strength of the coke chip itself is weak. Since durability is lowered due to various problems, such as cork chip elastic pavement, which is processed through various surface processing steps in advance, is used for road pavement.

Korean Unexamined Patent Publication No. 10-2019-0029262 discloses an environmentally friendly elastic cork chip continuous manufacturing apparatus, a manufacturing method and an environmentally friendly elastic cork chip manufactured therefrom, an environmentally friendly road paving method using the elastic cork chip.

The prior art has the disadvantage that the process is complicated and takes a long time. In addition, since only the cork chip is used, there is a problem that the functionality is low.

Republic of Korea Patent Publication No. 10-2019-0029262: Eco-friendly elastic cork chip continuous manufacturing apparatus, manufacturing method and eco-friendly elastic cork chip manufactured therefrom, eco-friendly road paving method using the elastic cork chip

The present invention has been made to improve the above problems, and the object of the present invention is to provide an elastic packaging composition and an elastic packaging method which are excellent in durability by strengthening the strength of the coke chip.

In addition, an object of the present invention is to provide an elastic packaging composition and an elastic packaging method that can increase the function, such as improving the wear resistance by adding an additive such as shell.

The elastic packaging material composition of the present invention for achieving the above object contains 10 to 50 parts by weight of the binder and 5 to 20 parts by weight of an additive including a shell with respect to 100 parts by weight of the surface coated cork chip.

The additive further comprises a mudstone powder and red paper powder.

And the elastic packaging method of the present invention for achieving the above object comprises the first coating step of obtaining a surface cork chip coated by coating the coating liquid on the cork having a size of 5 to 15mm; A second coating step of applying a coating liquid to a cork having a size of 2 to 4 mm to obtain a top cork chip coated with a surface; A first mixing step of obtaining 10 to 50 parts by weight of the binder with respect to 100 parts by weight of the lower cork chip and 5 to 20 parts by weight of an additive including a shell to obtain a lower elastic packaging material composition; A lower packing step of applying the lower elastic packing material composition on the base layer and stopping the surface to form a lower elastic packing layer; A second mixing step of obtaining 10 to 50 parts by weight of the binder with respect to 100 parts by weight of the upper cork chip and 5 to 20 parts by weight of an additive including a shell to obtain an upper elastic packaging material composition; And an upper packing step of coating the upper elastic packing material composition on the lower elastic packing layer and stopping the surface to form the upper elastic packing layer.

In the first and second blending step, the additive of the lower elastic packaging material composition or the additive of the upper elastic packaging material composition further includes mudstone powder and red paper powder.

The first and second coating steps may include a) stirring the cork and the coating solution into a stirrer, and b) contacting the lower cork chip or the upper cork chip discharged from the stirrer with air in a cyclone. A cooling step of cooling, and c) a filtering step of removing foreign matters by introducing exhaust gas discharged from the cyclone into a filter, wherein the filter has a spherical filter housing and exhaust gas discharged from the cyclone flows into the filter housing. A connecting pipe connecting the filter housing and the cyclone to be discharged, a discharge pipe installed in the filter housing so that the exhaust gas introduced into the filter housing is discharged to the outside, and installed inside the filter housing and empty. A spherical center ball, an expansion member installed to surround the outside of the center ball, and the fold A filter member formed of a porous structure having a plurality of voids through which air can pass and between the outer surface of the member and the inner surface of the filter housing, the filter member being elastically deformable, and the center for pressing the filter member; It is provided with an air injection unit for inflating the expansion member by injecting compressed air between the ball and the expansion member.

As described above, the present invention may provide an elastic packaging composition having excellent durability by simplifying the process and reinforcing the strength of the coke chip.

The elastic packaging constructed with such an elastic packaging material composition has excellent properties in various aspects such as high elasticity, low thermal conductivity, sound insulation, light weight, and shock absorption. In addition, there is no rubber smell can create a comfortable environment, heavy metals are not discharged.

In addition, the present invention can be used as a raw material of the elastic packaging material by utilizing the discarded shell can preserve the environment and at the same time improve the wear resistance of the elastic packaging layer.

1 is a cross-sectional view showing a state of a coke chip according to an embodiment of the present invention,
2 is a cross-sectional view of the elastic packaging constructed in accordance with an example of the present invention,
3 is a configuration diagram schematically showing a stirrer, a cyclone and a filter applied to a method for constructing an elastic package according to an embodiment of the present invention,
4 and 5 are cross-sectional views of the filter applied to FIG.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the elastic packaging material composition and the elastic packaging construction method using a cork chip according to a preferred embodiment of the present invention.

Referring to Figure 1, the elastic packaging material composition according to an embodiment of the present invention contains a surface coated cork chip (1), binder (7), additive (9).

The cork chip 1 is coated on the surface with a coating liquid. For example, the coating layer 5 may be formed on the surface by coating the coating liquid on the surface of the finely crushed cork piece 3.

Cork (cork) applied to the present invention can use the cork collected from the oyster oak or oak tree, etc. that grows domestically or using imported products. Cork can use the waste generated in the krk stopper process.

Cork has excellent properties in various aspects such as high elasticity, low thermal conductivity, sound insulation, light weight, and shock absorption. In addition, the cork has a low radiant heat to alleviate the heat island phenomenon, there is no rubber smell can create a comfortable environment. In addition, heavy metals are not emitted as natural materials.

Cork is ground to a suitable size and used in pieces. Corks are used in the present invention divided into two kinds of sizes. For example, it may be divided into cork having a size of 5 to 15 mm and cork having a size of 2 to 4 mm. Cork pulverized to a size of 5 to 15mm is used in the manufacture of the lower cork chips described below. And cork pulverized to 2 to 4mm size is used in the production of the upper cork chips described below.

In this way, the coating liquid is applied to the surface of the finely crushed cork pieces 3 to obtain a cork chip 1 having the coating layer 5 formed thereon.

A polymeric binder can be used as a coating liquid. As the polymer binder, any one of an epoxy resin, an acrylic resin, and a urethane resin can be used. Cork chips coated with the coating solution significantly improves tensile strength and durability compared to uncoated cork chips.

Comparing the tensile strength and dimensional change rate of the cork chip with the coating layer and the uncoated cork chip, the tensile strength of the coated layer was increased by about 50 to 150%, and the rate of dimensional change was reduced by about 30 to 60%. appear.

The elastic packaging material composition of the present invention is prepared by mixing the binder (7) and the additive (9) on the surface coated cork chip (1). For example, 10 to 50 parts by weight of the binder and 5 to 20 parts by weight of an additive including a shell may be mixed with 100 parts by weight of the surface-coated cork chip.

As the binder 7, a polyurethane binder can be used. The polyurethane binder can use one-component or two-component.

The additive 9 adds functionality. Shell is used as an example of an additive. The shell reinforces the strength of the elastic packaging layer and reduces the volatile organic compounds. In particular, the shell serves to greatly increase the wear resistance of the elastic packaging layer.

A shell is a shell of a shell, in which the stratum corneum of the organic component and the stratum corneum of the inorganic component are mixed with each other. The shell is composed mainly of calcium carbonate and contains an organic substance and a trace amount of silica sand. The present invention has the effect of improving the natural environment by using the discarded shell as a material.

Shells can be used for shells of various shellfish such as oysters, cocktails, clams, batters and clams. Oyster shells or cockle shells are preferably used as shells. Oyster shells and cockle shells are relatively easy to supply due to their high volume.

Shells can be used without firing, but can be fired to remove organic matter. Firing may be carried out at 600 to 800 ° C. for 20 to 60 minutes. The shell may be roughly ground to use in the form of pieces or finely ground to be used in powder form. For example, the shell may be ground to a size of 5 to 300 mesh particle size.

On the other hand, the additive may further comprise a mudstone powder and red paper powder. For example, the additive may be 20 to 60 parts by weight of mudstone powder and 20 to 60 parts by weight of red paper powder with respect to 100 parts by weight of shell.

Mudstone is a type of sedimentary rock that is hardened by the accumulation of fine mud, also called mudstone. Mudstone is a clay mineral mainly composed of silt and clay, and includes quartz, feldspar, carbonate mineral, bentonite, and the like. These mudstones have the function of adsorption and decomposition of harmful substances and antibacterial function.

Haloysitum Rubrum is a red mass formed by the decomposition of kaolin feldspar by heat and infiltration of carbonic acid-containing water, and contains halosite and kaolinite as main components. The main components of red coal paper are silicon oxide, aluminum oxide, potassium oxide, sodium oxide, calcium oxide, magnesium oxide, iron oxide, manganese oxide, titanium oxide and the like. The clay minerals that make up the red coal deposits, such as halloysite and kaolinite, adsorb large amounts of metal ions due to their high specific surface area, surface charge, and cation exchange ability, and these adsorption characteristics can reduce the concentration of heavy metals or It has an effect that can be removed. In addition, red paper releases far-infrared rays and negative ions, which has a beneficial effect on the environment.

Hereinafter, the elastic packaging method according to an embodiment of the present invention will be described by dividing step by step with reference to Figs.

1. First coating step

First, a coating solution is coated on a cork having a size of 5 to 15 mm through a first coating step to obtain a lower cork chip 10 coated with a surface.

Specifically, the first coating step is a) agitation step of stirring by adding the cork 11 and the coating liquid to the stirrer 30, b) the lower cork chip discharged from the stirrer 30 and the air in the cyclone 40 And a cooling step of contacting and cooling, and c) a filtering step of removing the foreign substances by introducing the exhaust discharged from the cyclone 40 into the filter 50.

The stirring step is performed by the stirrer 30.

Stirrer wing 30 is installed inside the stirrer. The motor is installed in the lower part of the stirrer 30 to rotate the stirring blades. The top of the stirrer 30 is provided with a door that can be opened and closed. The finely pulverized krk is put into the inside of the stirrer 30 and then closed by the door.

A spray nozzle 31 is installed in the stirrer 30 to spray the coating liquid. The coating liquid stored in the tank 33 is sprayed into the stirrer 30 and applied to the surface of the cork pieces. The coating solution is applied and the stirring blade is rotated at a constant speed to prevent the cork pieces from sticking together. And steam or hot air can be added to the inside of the stirrer 30 as needed. The coating liquid can be cured rapidly by applying steam or hot air.

The lower cork chip coated on the surface of the stirrer 30 is introduced into the cyclone 40 through the transfer means. The lower cork chip can be conveyed by blowing high pressure air into the conveying pipe 37 using the turbo fan 35 as the conveying means.

The cooling step is performed by cyclone 40.

The lower cork chip is contacted with air in the cyclone 40 to cool the lower cork chip.

The lower cork chip is introduced into the upper portion of the cyclone 40 through the transfer pipe 37. The conveying pipe 37 is tangentially connected to the cyclone to allow the lower cork chip flowing into the cyclone to pivot in the cyclone 40 together with the air. The lower cork chip is lowered while hitting the inner surface of the cyclone 40 while turning, and air is discharged through the exhaust pipe 41 connected to the upper portion of the cyclone 40.

On the other hand, an air spray nozzle 43 for injecting air is provided in the inner lower portion of the cyclone 41. The air spray nozzle 43 is connected to the tank 45 in which compressed air is stored. The air spray nozzle 43 serves to cool the lower cork chips while preventing the adhesion between the lower cork chips. The cooled lower cork chips are discharged to the outside by a screw conveyor 47 installed under the cyclone 40, and the discharged lower cork chips are stored in a storage container.

The filtering step is carried out in the filter 50.

Exhaust exhausted from the cyclone 40 through the exhaust pipe 41 enters the filter 50. The foreign matter in the exhaust gas flowing into the filter 50 is filtered by the filter 50. The filter 50 may remove foreign substances by applying a conventional filter structure.

Through the first coating step described above, the lower cork chip 10 having the coating layer 13 formed on the cork 11 surface may be obtained.

4 and 5 show another example of the filter.

The filter shown is a spherical filter housing 61, a connecting pipe 62 connecting the filter housing 61 and the cyclone so that the exhaust from the cyclone can be introduced into the filter housing 61, the filter housing 61 Discharge pipe 63 is installed in the filter housing 61 so that the exhaust flow into the outside to be discharged to the outside, and the spherical center ball 64 is installed inside the filter housing 61, the center ball 64, and the center ball An expansion member (66) installed to surround the outside of the (64), the porous member having a plurality of air gaps installed between the outer surface of the expansion member 66 and the inner surface of the filter housing 61, the air can pass through The expansion member 66 is expanded by injecting compressed air between the center member 64 and the expansion member 66 so as to pressurize the filter member 67 and the filter member 67 having a structure and elastically deformable. An air injection unit is provided.

The filter housing 61 is formed in a spherical shape with an empty inside.

The center ball 64 is also formed in a hollow sphere. The diameter of the center ball 64 is formed smaller than the diameter of the filter housing 61. Therefore, an empty space is formed between the center ball 64 and the filter housing 61. The center ball 64 is located at the center of the filter housing 61 by the air injection pipe 69 to be described later. Air injection pipe 69 is coupled to one side of the center ball (64). The flow path of the air injection pipe 69 communicates with the inside of the center ball 64. Therefore, the compressed air supplied through the air injection pipe 69 is first introduced into the center ball 64.

The center ball 64 is formed with a plurality of air blowing holes (65). The air blowing holes 65 are disposed at equal intervals on the surface of the center ball 64. This is to allow the air to be ejected in all directions of the center ball 64 to uniformly expand the expansion member 66.

The expansion member 66 surrounds the outside of the center ball 64. The expansion member 66 is formed of a thin film of elastic rubber or silicone material. The expansion member 66 expands when air is injected and contracts when air is discharged.

The filter member 67 is accommodated in an empty space between the outer surface of the expansion member 66 and the inner surface of the filter housing 61. The filter member 67 has a porous structure. A plurality of voids formed on the surface and the inside of the filter member 67 are connected to each other. Therefore, the air introduced into the filter housing 61 passes through the filter member 67 and is discharged to the outside through the discharge pipe 63. As air passes through the filter member 67, foreign matter is filtered out by the porous structure of the filter member 67. The filter member 67 may be made by weaving a fiber yarn having an elastic force in a three-dimensional network structure to be elastically deformable.

The air injection unit injects air into the center ball 64 to expand the expansion member 66. The air injection unit includes an air compressor (not shown) for generating compressed air, and an air injection pipe 69 for connecting the air compressor and the center ball 64. When compressed air is supplied to the center ball 64 through the air injection pipe 69, air is injected into the expansion member 66 through the air blowing hole 65, thereby expanding the expansion member 66. do. When the expansion member 66 expands to press the filter member 67, the filter member 67 decreases in volume. As a result, the gap of the filter member 67 is contracted. In addition, when the compressed air is discharged to the outside through the air injection pipe 69, the expansion member 66 is contracted. As a result, the filter member 67 increases in volume, thereby expanding the voids.

The filter described above has the advantage of freely adjusting the size of foreign matter to be removed by adjusting the pore size of the filter member.

2. Second coating step

When the first coating step is completed, the coating solution is applied to the cork having a size of 2 to 4 mm through the second coating step to obtain an upper cork chip 20 coated with a surface.

Specifically, the second coating step includes a) agitation step of adding the coke and the coating liquid to the stirrer and b) a cooling step of cooling the upper cork chip discharged from the stirrer by contacting with air in a cyclone, and c) in the cyclone. The exhaust gas is introduced into the filter to remove foreign matters.

Since the first coating step and the second coating step differ only in the size of the cork used, the same process as the above-described first coating step is omitted.

The upper cork chip 20 having the coating layer 23 formed on the surface of the cork 21 may be obtained through two coating steps.

3. The first mixing step

Next, 10 to 50 parts by weight of the binder and 5 to 20 parts by weight of an additive including a shell are mixed with respect to 100 parts by weight of the lower cork chip to obtain a bottom elastic packaging material composition.

Mixing can be performed using a conventional stirrer.

The lower cork chip 10, the binder 7, and the additive 9 were added to the stirrer and stirred to obtain a lower elastic packaging material composition.

As the binder, one-component or two-component polyurethane binders can be used.

And a shell can be used as an additive. In addition, it is a matter of course that 20 to 60 parts by weight of mudstone powder and 20 to 60 parts by weight of red paper powder may be mixed with 100 parts by weight of shell.

4. Lower packing stage

After applying the prepared lower elastic packaging material composition on the base layer 100 to stop the surface to form a lower elastic packaging layer (110).

The base layer 100 may be formed by crushing crushed stone. In addition, the base layer 100 may be a concrete layer, asphalt layer, permeable corn layer. If necessary, after applying the primer on the base layer 100, the lower elastic packaging material composition may be laid in a predetermined thickness.

After the surface of the lower elastic packaging layer 110 is stopped, heat is applied to the surface using a heating roller to cure the lower elastic packaging layer 110.

5. Second Blending Step

Next, 10 to 50 parts by weight of the binder and 5 to 20 parts by weight of an additive including a shell are mixed with respect to 100 parts by weight of the upper cork chip to obtain a lower elastic packaging material composition.

Mixing can be performed using a conventional stirrer.

The upper cork chip 20, the binder (7), the additive (9) is added to the stirrer and stirred to obtain a lower elastic packaging material composition.

As the binder, one-component or two-component polyurethane binders can be used.

And a shell can be used as an additive. In addition, it is a matter of course that 20 to 60 parts by weight of mudstone powder and 20 to 60 parts by weight of red paper powder may be mixed with 100 parts by weight of shell.

6. Upper packing step

After applying the prepared upper elastic packaging material composition on the lower elastic packaging layer 110, the surface is stopped to form the upper elastic packaging layer 120.

After installing the upper elastic packaging layer 120 to a predetermined thickness, the surface of the upper elastic packaging layer 120 is stopped. After the surface stops, the upper elastic packaging layer 120 is cured by applying heat to the surface using a heating roller.

The elastic packaging thus constructed has excellent properties such as high elasticity, low thermal conductivity, high impact absorption and wear resistance. Such elastic pavement can be installed on the tracks, trails, bicycle paths, playgrounds, sidewalks, athletic floors.

Hereinafter, the present invention will be described through the following examples. However, the following examples are only for illustrating the present invention in detail, and the scope of the present invention is not limited to the following examples.

(Example)

A polyurethane coating solution was applied to cork having a size of 5 to 15 mm to obtain a cork chip coated with a surface. Then, 30 parts by weight of the polyurethane binder and 10 parts by weight of shell powder as an additive were mixed with respect to 100 parts by weight of cork chips to obtain an elastic packaging material composition.

The elastic packaging material composition was laid on a concrete floor to a certain thickness, pressurized to stop the surface, and then cured using a heating roller to form an elastic packaging layer having a thickness of 50 mm.

(Comparative Example)

30 parts by weight of the polyurethane binder were mixed with respect to 100 parts by weight of cork having a size of 5 to 15 mm to obtain an elastic packaging composition.

The elastic packaging material composition was laid on a concrete floor to a certain thickness, pressurized to stop the surface, and then cured using a heating roller to form an elastic packaging layer having a thickness of 50 mm.

<Physical Experiment>

Tensile strength, elongation rate, hardness, and dimensional change rate were measured using the elastic packaging layers of Examples and Comparative Examples. The measurement results are shown in Table 1 below.

Test Items Example Comparative example Test Methods Tensile Strength (MPa) 1.6 0.9 5 of KS M 6518 Elongation (%) 82.5 65.3 5 of KS M 6518 Hardness (Hs, 23 ± 2 ℃) 61 46 KS M 6784 Rate of dimensional change (%), 70 ± 1 ℃, 48h -0.25 -0.43 GRM 6004: 2008

Referring to the results of Table 1, the Example is measured higher tensile strength, elongation rate, hardness than the comparative example, the dimensional change rate is measured to lower the Example confirmed that the improved physical properties of the elastic packaging layer It became.

In the above, the present invention has been described with reference to one embodiment, which is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

10: upper cork chip 20: lower cork chip
30: stirrer 40: cyclone
50: filter 100: base layer
110: lower elastic packaging layer 120: upper elastic packaging layer

Claims (5)

delete delete A first coating step of applying a coating liquid to a cork having a size of 5 to 15 mm to obtain a lower cork chip coated with a surface;
A second coating step of applying a coating liquid to a cork having a size of 2 to 4 mm to obtain an upper cork chip coated with a surface;
A first mixing step of obtaining 10 to 50 parts by weight of the binder with respect to 100 parts by weight of the lower cork chip and 5 to 20 parts by weight of an additive including a shell to obtain a lower elastic packaging material composition;
A lower packing step of applying the lower elastic packing material composition on the base layer and stopping the surface to form a lower elastic packing layer;
A second mixing step of obtaining 10 to 50 parts by weight of the binder with respect to 100 parts by weight of the upper cork chip and 5 to 20 parts by weight of an additive including a shell to obtain an upper elastic packaging material composition;
And an upper packaging step of coating the upper elastic packaging material composition on the lower elastic packaging layer and stopping the surface to form the upper elastic packaging layer. 4. The cork chip according to claim 3, wherein the additive of the lower elastic packaging material composition or the additive of the upper elastic packaging material composition further comprises mudstone powder and red paper powder in the first and second mixing steps. Elastic packaging method. The method according to claim 3, wherein the first and second coating steps include a) stirring the cork and the coating solution into a stirrer and b) stirring the lower cork chip or the upper cork chip discharged from the stirrer. A cooling step of cooling by contacting with air in a cyclone, and c) a filtering step of removing foreign substances by introducing an exhaust discharged from the cyclone into a filter,
The filter may include a spherical filter housing, a connection pipe connecting the filter housing and the cyclone to allow the exhaust discharged from the cyclone to enter the filter housing, and the exhaust flowed into the filter housing may be discharged to the outside. A discharge pipe installed in the filter housing so as to be installed, a spherical center ball installed inside the filter housing, and an expansion member installed to surround the outside of the center ball, an outer surface of the expansion member and the filter; The filter member is formed between the inner surface of the housing and has a porous structure having a plurality of voids through which air can pass and is elastically deformable, and is compressed between the center ball and the expansion member to pressurize the filter member. And an air injection unit for inflating air to expand the expansion member. Elastic packaging method using cork chips.

Images