KR20190025210A - Manufacturing method of impact-absorbing eco-friendly precast pavers - Google Patents

Abstract

The present invention relates to a manufacturing method of impact-absorbing eco-friendly precast pavers, which reinforce durability of precast pavers, thereby minimizing cracks of the precast pavers caused by a long-term use and remarkably expanding the lifespan of the precast pavers. The manufacturing method of impact-absorbing eco-friendly precast pavers includes: a base chip manufacturing step (S10) of making raw materials into base chips; a first pressing step (S20) of charging the base chips into a mold and pressing and melting them to mold as a body of precast pavers; a second pressing step (S30) of cooling and hardening the body and pressing and melting the body to form an elastic layer on the body; and a cooling step (S40) of recovering the body from the mold and cooling the body in cooling water of 15°C to 20°C to manufacture precast pavers.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an impact-

The present invention relates to a method of manufacturing an impact-absorbing eco-friendly press block, and more particularly, to a method of manufacturing an impact-absorbing eco-friendly press block, which is capable of providing a walker with cushioning convenience by forming an elastic layer of EPDM material, The present invention also relates to a method of manufacturing a shock absorbing eco-friendly press block capable of providing the user with the convenience of production of a product because the material of the press block is manufactured in the form of a chip so that the raw material can be easily managed and stored.

Generally, the sidewalk block is continuously arranged and packed against each other in order to package the sidewalks of India, the sidewalk, the housing complex, the plaza, the park, the parking lot, etc. in consideration of the urban beauty and the convenience of walking in the city planning. (Such as a cube, a rectangular parallelepiped, a U-shape, etc.) and a use (a braille block, a guide block, a pitcher press block, a bicycle travel press block, etc.).

These pavement blocks are predominantly formed of concrete materials containing mostly stone and cement, which are useful because they are excellent in hardness and heat resistance. However, since they are excellent in hardness, they are easily damaged and damaged by external impact It is not easy to store and transport the pave block because it has a heavy weight. In addition, it is difficult to store and transport the pave block. there was.

In order to solve the above problems, a method of manufacturing a sidewalk block by recycling waste plastics has been conventionally introduced. This is advantageous in terms of maximizing recycling of resources because it uses waste resources, but it has disadvantages in that practicality is very low due to lack of quality due to lack of manufacturing technology and know-how.

Particularly, when a conventional press block using waste plastic is also used for a long period of time, it is easily exposed to the load (impact) of the pedestrian, so that cracks are easily generated in the press block, resulting in a problem that the service life of the press block is somewhat low.

Further, since the raw materials of the sidewalk blocks have to be separately stored and managed, there is a problem in use that the management and use of raw materials are inconvenient.

It is an object of the present invention to provide an elastic layer of EPDM material having excellent elasticity on the upper part of a sidewalk block as an end product to provide a pedestrian with ease of walking through a cushion The present invention also provides a manufacturing method of a shock absorbing environmentally friendly press block capable of providing a user with the convenience of production of a product because the material of the press block is manufactured in a chip form so that the raw material can be easily managed and stored.

Further, each raw material prepared through the base chip manufacturing step is blended according to the blending ratio, and is mixed and melted. Finally, the raw material is preliminarily manufactured in the form of a ball-like chip, It is possible to uniformly set the specific gravity (weight) so that the quality of the product can be enhanced by easily standardizing the finished product, and the durability of the sidewalk block is enhanced through the tough fiber of the palmy shell contained in the base chip, The present invention provides a method of manufacturing a shock absorbing environmentally friendly press block capable of minimizing cracks in a block and extending the service life of the press block.

In order to accomplish the above object, there is provided a method of manufacturing a shock-absorbing environmentally-friendly press block according to the present invention, comprising: a base chip manufacturing step (S10) of preparing a raw material constituting a body of a sidewalk block, A first pressing step (S20) of filling the base chip into a mold and then pressing and melting the molded body into a body of a sidewalk block; and cooling and hardening the body by maintaining the temperature of the mold at 40 to 60 ° C, A second pressing step (S30) of filling an EPDM (ethylene propylene diene monomer) chip with the mold before pressurization and then forming an elastic layer on the upper part of the body by pressurizing and melting; And a cooling step (S40) for recovering the body and then cooling the mixture to cool water at 15 to 20 deg. C and cooling the mixture for 2 to 4 minutes to prepare a press block as a finished product,

The body of the sidewalk block is formed to have a thickness of 50 to 60 mm, and the elastic layer has a thickness of 5 to 10 mm.

The base chip fabricating step S10 includes a first preparing step S11 for preparing thermoplastic resin and sand and abrasive as raw materials for weight increase / reduction, wherein the thermoplastic resin and the weight reducing raw material are prepared at a weight ratio of 1: 5 to 6 A mixing step (S12) of mixing the thermoplastic resin and the weight-increasing / reducing raw material, melting the thermoplastic resin at a temperature of 200 to 300 ° C and mixing the thermoplastic resin with the weight increasing / reducing material, and mixing the mixed material in the mixing step (S12) And a forming step (S13) of shaping and processing into a ball-shaped base chip.

The method may further include forming a reinforcing coating layer on the surface of the base chip to enhance the durability of the body of the sidewalk block formed on the base chip,

The reinforcing coating layer forming step (S50) may include a second preparing step (S51) of preparing thermoplastic resin and fibers extracted from the palm fruit husk at a ratio of 1: 0.1 to 0.5 by weight, the fibers having a length of 10 to 30 mm, A cooling step (S52) of cooling the base chip at a temperature of -5 to 5 DEG C for 5 minutes, and a step (S52) of cooling the base chip at a temperature of -5 to 5 DEG C for 5 minutes. The thermoplastic resin and the fiber prepared in the second preparation step (S51) are put into an extruder, And a cooling step S52 in the melting and conveying step S53 is carried out to feed the base chip into an extruder so that a thermoplastic resin containing fibers is formed on the surface of the base chip And a coating step (S54) of coating the surface of the base chip to form a reinforcing coating layer on the surface of the base chip.

In addition, in the step of forming the reinforcing coating layer (S50), the fiber of the palm fruit husk, which is the material of the reinforcing coating layer, collects the palm fruit husk which is discarded and naturally dries its own moisture to 5 to 10%, and the dried palm fruit husk Extracting the fibers from the palm fruit husk by separating only the fibers, cutting the fibers into 10 to 30 mm, drying the cut fibers naturally for 2 to 3 days, and drying and removing various foreign substances adhered to the fibers. .

As described above, according to the method of manufacturing the shock-absorbing environmentally-friendly press block according to the present invention, an elastic layer of EPDM material having excellent elasticity is formed on the upper part of the press block, which is an end product, to provide the pedestrian with ease of walking through the cushion In addition, since the raw material of the sidewalk block is manufactured in the form of a chip, the raw material can be easily managed and stored, thus providing the user with the convenience of manufacturing the product.

Further, each raw material prepared through the base chip manufacturing step is blended according to the blending ratio, and is mixed and melted. Finally, the raw material is preliminarily manufactured in the form of a ball-like chip, It is possible to uniformly set the specific gravity (weight) so that the quality of the product can be enhanced by easily standardizing the finished product, and the durability of the sidewalk block is enhanced through the tough fiber of the palmy shell contained in the base chip, The cracks of the block can be minimized, and the service life of the press block can be greatly extended.

1 is a block diagram of a method of manufacturing a shock absorbing environmentally friendly sidewalk block according to an embodiment of the present invention
2 is a view for explaining a manufacturing method of the impact-absorbing environment-friendly sidewalk block shown in Fig. 1

A method of manufacturing a shock absorbing environmentally friendly press block according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Detailed descriptions of well-known functions and constructions that may be unnecessarily obscured by the gist of the present invention will be omitted.

1 and 2 illustrate a method of manufacturing a shock-absorbing environmentally-friendly press block according to an embodiment of the present invention. FIG. 1 is a block diagram of a method of manufacturing a shock- And Fig. 2 is a view for explaining a method of manufacturing the shock-absorbing environment-friendly sidewalk block shown in Fig.

As shown in the drawing, a method 100 for manufacturing a shock absorbing environmentally-friendly press block according to an embodiment of the present invention includes a base chip manufacturing step S10, a first pressing step S20, (S30), and a cooling step (S40).

As shown in FIG. 1, the base chip manufacturing step S10 is a step of preparing a base chip 250 in the form of a chip as a raw material constituting the body 210 of the sidewalk block 200,

A first preparation step (S11), a mixing step (S12), and a molding step (S13).

The first preparation step (S11) is a step of preparing a thermoplastic resin and sand and limestone as weight change materials, wherein the thermoplastic resin and the weight change material are prepared at a weight ratio of 1: 5 to 6.

Here, the thermoplastic resin may be a mixture of one or more of polyvinyl chloride resin, polystyrene resin, polypropylene (PP) resin, polyethylene (PE) resin, acrylic resin, nylon, etc., It is preferable to mix the abrasive grains and the sand at a weight ratio of about 1:15 so that the abrasive can be injected and filled between the sand. The abrasive grains are mixed with the thermoplastic resin at a weight ratio of 5 to 6: 1, The specific gravity of the body 210 of the sidewalk block 200 is secured to approximately one to two and is guided to be stably fixed on the ground surface.

The mixing step S12 is a step of mixing the thermoplastic resin and the weight reducing material, and melting the thermoplastic resin at a temperature of 200 to 300 DEG C to mix the thermoplastic resin and the weight change material.

Here, the thermoplastic resin and the weight change material are precisely blended in a weight ratio of 1: 5 to 6 to induce the base chips 250, which are formed in the molding step S13 to be formed later, to have uniform physical properties. Therefore, the specific gravity (weight) of the sidewall blocks 200 made of the base chip 250 is uniformly set, thereby facilitating easy standardization of the finished product.

The forming step (S13) is a step of extruding the mixed material in the mixing step (S12), and molding the same into a ball-shaped base chip (250) as shown in Fig.

It is needless to say that the raw material of the press block manufactured in the form of the base chip 250 as described above can be easily managed and stored, thereby providing convenience to the user.

1, an enhanced coating layer 260 is formed on the surface of the base chip 250 to enhance the durability of the body 210 of the sidewall block 200, which is manufactured based on the base chip 250, (S50) of forming a reinforcing coating layer,

The reinforced coating layer forming step S50 includes a second preparing step S51, a cooling step S52, a molten transferring step S53, and a coating step S54.

In the second preparation step (S51), the thermoplastic resin and the fibrous material 261 extracted from the palm fruit husk are prepared in a ratio of 1: 0.1 to 0.5, and the fibrous material 261 is prepared in a length of 10 to 30 mm .

If the fibrous material 261 is added in an amount of less than 0.1 part by weight with respect to 1 part by weight of the thermoplastic resin, it is difficult to expect an increase in durability of the fibrous material 261 due to the fibrous material 261, The addition amount of the thermoplastic resin is relatively small and it is difficult to coat (adhere) the surface of the base chip 250 through the thermoplastic resin melted in the step S53, Likewise, the fibers 261 are preferably added in a proportion of 0.1 to 0.5 parts by weight.

The cooling step (S52) is a step of cooling the base chip (250) at -5 to 5 ° C for 5 minutes.

The reason why the base chip 250 is cooled is that the thermoplastic resin containing the fibrous material 261 in the molten transferring step S53 to form the reinforcing coating layer 260 on the surface of the base chip 250 The base chip 250 is melted together with the heat source of the resin melted when the melt is fed into the extruder, thereby preventing the chip from being lost.

2B, in the melting transfer step S53, the thermoplastic resin and the fibers 261 prepared in the second preparation step S51 are put in an extruder, and the thermoplastic resin is mixed with the fibers 261 while being melted So as to be forwardly transported.

Here, since the thermoplastic resin and the fiber 261 are continuously introduced into the extruder, the fibers 261 are evenly distributed to the thermoplastic resin that is melted and transferred through the extruder.

Therefore, as shown in FIG. 2B, since the base chips 250 on which the reinforcing coating layer 260 is formed through the coating process S54 to be formed later include the fibers 261 uniformly, The fibrous material 261 is naturally distributed evenly inside the body 210 of the sidewalk block 200 manufactured through the base chip 250 so that the durability of the sidewalk block 200 due to the fibrous material 261 is uniformly uniform Thereby enhancing the structural safety of the product.

2B, in the coating step S54, the base chip 250 that has undergone the cooling step S52 is put into the extruder in the melting transfer step S53, And a reinforcing coating layer 260 is formed on the surface of the base chip 250 by coating the thermoplastic resin including the fibers 261. [

The base chip 250 having undergone the coating step S54 is formed as a base chip 250 having a reinforced coating layer 260 formed by cooling with cooling water or normal temperature.

Meanwhile, in the reinforcing coating layer forming step (S50), the fibrous material 261 of the palm fruit husk, which is the material of the reinforcing coating layer 260, collects the discarded palm fruit bark and naturally dries its own moisture to 5 to 10% The palm fruit bark is crushed to separate only the fibers, the fibers are cut to 10 to 30 mm, and the cut fibers are naturally dried for 2 to 3 days to dry and remove various foreign substances adhering to the fibers. Thus, The fiber is extracted from the fruit skin, but it is of course not limited to such an extraction method to extract the fiber.

Meanwhile, in the base chip forming step (S10), the fibrous material 261 is added together with the weight change material to the thermoplastic resin, and the base chip 250 including the fibrous material 261 together with the weight- However, in the course of mixing and melting the thermoplastic resin and the weight-adjusting raw material and the fiber for producing the base chip 250, it is preferable to add the fiber to the mixed and melted raw material due to the interference between the weight- The content of the fibers 261 between the base chips 250 to be manufactured is not uniform because the base blocks 250 are not uniformly distributed, and the sidewall block 200 made of such a base chip 250 has a uniform product performance and uniform performance Thereby causing the quality of the product to deteriorate.

Therefore, by forming the reinforcing coating layer 260 through the reinforcing coating layer forming step S50 on the surface of the base chip 250 manufactured through the base chip manufacturing step S10 as described above, the content of the fibers 261 becomes uniform It is preferable to manufacture a base chip 250 and enhance the quality of the product by fabricating a standardized board block 200 through the base chip 250.

As shown in FIG. 1, the first pressing step S20 is a step of filling the base chip 250 into the mold 1, pressurizing and melting the base chip 250 to form the body 210 of the sidewalk block 200 .

That is, as shown in FIG. 2C, the base chip 250 is filled in the mold 1, and then the pressure is applied at a pressure of 300 to 500 tons at a temperature of 200 to 280.degree. A plurality of base chips 250 that are uniformly filled in the mold 1 are melted to form the body 210 so that the reinforcing coating layer 260 coated on the base chip 250 The fibrous material 261 is naturally distributed evenly inside the body 210 so that the sidewall block 200 made of the finished product can be strengthened as a whole by the durable fibrous material 261.

Here, the body 210 is preferably formed to have a thickness of about 50 to 60 mm so as to be suitable for use as the sidewalk block 200.

Meanwhile, the mold 1 determines the size, shape, and weight of the press block 200, which is an end product, and may be manufactured in various sizes, shapes, and weights suited to the characteristics of the finished product.

As shown in FIGS. 1 and 2D, the second pressing step S30 is a step of cooling and curing the body 210 for about 1 to 15 minutes by maintaining the temperature of the metal mold 1 at 40 to 60 ° C. Filling the mold 1 with an ethylene propylene diene monomer (EPDM) chip and pressurizing and melting the body 210 to form an elastic layer 220 on the body 210 before the body 210 is completely cured to be.

The reason why the body 210 is not completely cured is that the EPDM chip that is pressurized (foamed) after being filled in the mold 1 is formed into the elastic layer 220 of the sidewalk block 200, And to induce a firm coupling between the elastic body 220 and the body 210 constituting the sidewalk block 200 by guiding the elastic body 220 to be partially melt-mixed with the elastic body 210.

If the thickness of the elastic layer 220 is less than 5 mm, the elasticity (cushion) is somewhat low, and sufficient elasticity can not be supplied to the pedestrian. If the thickness exceeds 10 mm, Therefore, the thickness is preferably 5 to 10 mm.

1 and 2E, in the cooling step S40, the body 210 having the elastic layer 220 formed thereon is recovered from the mold 1, Followed by cooling for 4 minutes to fabricate the press block 200 as an end product.

Here, it is preferable that the sidewalk block 100 completed through the cooling step S40 is made to have a specific gravity of 1 to 2, and is stably fixed on the ground.

The method 100 of manufacturing the shock-absorbing eco-friendly press block according to the present invention comprises the steps of forming an elastic layer 220 of EPDM material having excellent elasticity on the upper part of the press block 200, It is possible to provide ease of walking through the press block 200 and to manufacture the material of the press block 200 in a chip form so that it is very easy to manage and store the raw material,

Further, each raw material prepared through the base chip manufacturing step (S10) is blended according to the blending ratio, followed by mixing and melting. Finally, the raw material is preliminarily manufactured in the form of a ball-shaped chip, The weight of the sidewalk block 200 can be uniformly set so that the quality of the finished product can be easily standardized to enhance the quality of the product and the quality of the product of the palm kernel shell 261, The durability of the sidewalk block 200 can be enhanced to minimize the cracks of the sidewalk block 200 due to long-term use, thereby significantly extending the service life of the sidewalk block 200.

The method 100 for manufacturing a shock-absorbing environmentally-friendly press block according to an embodiment of the present invention having the above-described construction produces the press block 200 in the following manner.

First, as shown in FIG. 2A, a thermoplastic resin and a weight control raw material are prepared at a weight ratio of 1: 5 to 6 (S11). Then, a thermoplastic resin and a weight control raw material are mixed and melted to form a ball chip 250 . (S12), (S13)

Then, as shown in FIG. 2B, a reinforcing coating layer 260 is formed on the surface of the base chip 250 by mixing the thermoplastic resin and the fibrous material 261 extracted from the palm fruit shell at a ratio of 1: 0.1-0.5 by weight do. (S50)

Then, as shown in FIG. 2C, the base chip 250 is put into the mold 1 in a fixed amount, and then the resultant is molded into a body 210 of the sidewalk block 200 by press molding at a high temperature.

The body 210 of the sidewall block 200 having enhanced durability due to the fibers 261 contained in the reinforcing coating layer 260 formed on the surface of the base chip 250 is formed in the body 210. (S20)

Then, as shown in FIG. 2D, an EPDM chip is injected in a predetermined amount into the mold 1, and then the resultant is formed into an elastic layer 220 of the sidewalk block 200 by press molding at a high temperature. (S30)

Then, as shown in FIG. 2E, the sidewall block 200 having the body 210 and the elastic layer 220 formed thereon is recovered from the mold 1, and then coagulated with the cooling water. (S40)

The above-described processes are automatically and continuously performed to mass-produce the sidewall blocks 200, which are finished products.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. You will understand the point. It goes without saying that variations can be made by those skilled in the art without departing from the spirit of the present invention. Accordingly, the scope of claim of the present invention is not limited within the scope of the detailed description, but will be defined by the following claims and technical ideas thereof.

1. Mold
S10. Base chip manufacturing step S11. First preparation step
S12. Mixing process S13. Molding process
S20. The first pressing step S30. The second pressurization step
S40. Cooling step S50. Strengthening coating layer forming step
S51. Second preparation step S52. Cooling process
S53. Melting transfer process S54. Coating process
100. Manufacturing method of impact-absorbing eco-friendly press block
200. Press block 210. Body
220. Elastic layer 250. Base chip
260. Reinforced coating layer 261. Fiber

Claims (4)

A base chip manufacturing step (S10) of preparing a raw material constituting the body 210 of the sidewalk block 200 as a chip type base chip 250;
A first pressing step (S20) of filling the base chip (250) into the mold (1), pressurizing and melting the molded body (250) and molding the base chip (250) into the body (210) of the sidewalk block (200);
The temperature of the mold 1 is maintained at 40 to 60 ° C to cool and cure the body 210. The body 210 is filled with an ethylene propylene diene monomer (EPDM) chip before the body 210 is cured, A second pressing step (S30) of pressurizing and melting to form an elastic layer (220) on the body (210); And
A cooling step of collecting the body 210 having the elastic layer 220 formed thereon from the mold 1, collecting the resin in a cooling water at 15 to 20 ° C for 2 to 4 minutes to prepare a sidewall block 200 S40), < / RTI >
Wherein a thickness of the body 210 of the sidewalk block 200 is 50 to 60 mm and a thickness of the elastic layer 220 is 5 to 10 mm. Way.
The method according to claim 1,
The base chip manufacturing step (S10)
A first preparation step (S11) of preparing a thermoplastic resin and sand and limestone as weight change materials, wherein the thermoplastic resin and the weight change material are prepared in a weight ratio of 1: 5 to 6;
A mixing step (S12) of mixing the thermoplastic resin and the weight-increasing / reducing raw material, melting the thermoplastic resin at a temperature of 200 to 300 DEG C and mixing the thermoplastic resin with the weight-
And a molding step (S13) of extruding and molding the mixed material in the mixing step (S12) into a ball-shaped base chip (250).
3. The method of claim 2,
A reinforcing coating layer forming step S50 for forming a reinforcing coating layer 260 on the surface of the base chip 250 to enhance the durability of the body 210 of the sidewall block 200 formed on the base chip 250, ); ≪ / RTI >
The reinforcing coating layer forming step (S50)
A second preparation step (S51) of preparing the fibrous material (261) at a ratio of 1: 0.1 to 0.5 by weight, the fibrous material (261) extracted from the thermoplastic resin and the palm fruit husk is 10 to 30 mm long,
A cooling step (S52) of cooling the base chip (250) at -5 to 5 DEG C for 5 minutes,
A melting transfer step (S53) of putting the thermoplastic resin and the fibers (261) prepared in the second preparing step (S51) into an extruder to mix the thermoplastic resin with the fibers (261)
The base chip 250 having been subjected to the cooling step S52 in the melting transfer step S53 is put into an extruder and a thermoplastic resin including fibers 261 is coated on the surface of the base chip 250, And a coating step (S54) for forming a reinforcing coating layer (260) on the surface of the reinforcing layer (250).
The method of claim 3,
In the reinforcing coating layer forming step (S50), the fibrous material 261 of the palm fruit husk, which is the material of the reinforcing coating layer 260,
The dried fruit of the palm kernel is collected and naturally dried to 5 to 10% of its own moisture content. The dried palm fruit husk is crushed to be crushed to separate only the fiber, the fiber is cut to 10 to 30 mm, Wherein the fiber is naturally dried for 2 to 3 days to remove various foreign substances adhering to the fiber to remove the fibers from the palm fruit husk.

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