WO2018186567A1

WO2018186567A1 - Method for producing water-permeable block using recycled synthetic resin, and water-permeable block produced by said method

Info

Publication number: WO2018186567A1
Application number: PCT/KR2018/000815
Authority: WO
Inventors: 김태현
Original assignee: 김태현
Priority date: 2017-04-03
Filing date: 2018-01-17
Publication date: 2018-10-11
Also published as: KR101772847B1

Abstract

Disclosed are a method for producing a water-permeable block using recycled synthetic resin, and a water-permeable block produced by the method. The production method comprises: (S10) a fine aggregate heating step for feeding fine aggregate into a primary heating furnace and heating at a set temperature; (S20) a fine aggregate temperature maintenance step for feeding the heated fine aggregate into a secondary heating furnace and maintaining so that the temperature to which the fine aggregate has been heated is maintained as a constant; (S30) a melting step for feeding, into a melting furnace, fine aggregate discharged from the secondary heating furnace and recycled synthetic resin pulverized to a set size, and melting the recycled synthetic resin by means of the temperature of the fine aggregate; (S40) a mixing step for feeding molten resin and fine aggregate into a mixer and mixing the fine aggregate and melted recycled synthetic resin, wherein the mixer is heated so that the temperature therein is 220-290℃, and is rotated at the rotational speed of 10-30rpm; (S50) a molding step for feeding the mixed molten resin and fine aggregate into a mold and molding the water-permeable block by compression-molding at 30-40MPa; and (S60) a cooling step for evenly cooling the surface and interior of the molded water-permeable block for 15-20 seconds.

Description

Method for producing permeable block using recycled synthetic resin and permeable block produced thereby

The present invention relates to a method for producing a water permeable block using recycled synthetic resin, such as a waste container used as a food and beverage container, and a water permeable block produced thereby.

Generally, parks and roads have various forms of sidewalks for people to walk safely. Such sidewalks are manufactured in various forms so that pedestrians can walk more comfortably and safely. For example, cement, asphalt, urethane, etc. are poured directly onto the ground to form sidewalks, or concrete or synthetic resins are used. Formed sidewalk blocks are manufactured by forming the sidewalk blocks flat on the ground to form sidewalks.

However, when cement concrete, asphalt, urethane, etc. are directly poured on the ground to form sidewalks, the surface is integrally formed and structurally stable, but the aesthetics are remarkably visual because its shape and color are monotonous. Not only is it lowered, but water is not permeable at all, so that a lot of sewage is generated.

Therefore, recently installed India has been gradually increasing the production of a variety of patterns and colors while at the same time using the sidewalk blocks to ensure permeability. However, the whitening phenomenon, in which the pigment is added due to sunlight or friction, is added to express the color of the sidewalk block.

The bigger problem is that most of the sidewalk blocks are products using cement concrete products, clay products, and waste tires, and these products use pigments produced by chemical methods in the upper layer, and they do not undergo sufficient curing process. As it is released, it causes pollution of river and river water quality.

In addition, in the case of elastic tire rubber chip blocks using waste tires, strength cannot be secured, and as time passes, the fugitive phenomenon occurs in the upper layer, which deteriorates the function as a block and shorts the replacement life. Caused.

In addition, products using eco-friendly resins do not have a product that is directly produced using a molding machine, and the curing time is long, many molds must be used, and after curing for at least 2 to 24 hours in the mold, demolding is performed. Therefore, it is difficult to apply to the actual site because there are many production processes and excessive production costs.

The present invention has been made to solve the above-mentioned problems, one object of the present invention is to mix the waste synthetic resin used as an edible container to prepare a permeable block, but to enhance the strength by increasing the resin compounding ratio compared to the existing In addition, by increasing the porosity by lowering the pressing force in the press molding, and by increasing the cooling time of the permeation block, it is possible to prevent burning or melting of the resin to prevent pore blockage and also to prevent harmful gas generation. It is to provide a method for producing a permeable block using.

In addition, another object of the present invention to provide a permeable block produced by the above-described manufacturing method.

The problem to be solved by the present invention is not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention for achieving the above object, a fine aggregate heating step of heating the fine aggregate to a predetermined temperature by inputting the fine aggregate into the primary heating furnace; A fine aggregate warming step of insulating the heated fine aggregate into a secondary heating furnace to keep the heated temperature of the fine aggregate constant; A melting step of melting the regenerated synthetic resin by the temperature of the fine aggregate by injecting the fine aggregate discharged from the secondary heating furnace and the regenerated synthetic resin crushed to a certain size into a melting furnace; The molten resin and the fine aggregate are added to the mixer at a ratio of 3: 7, and the temperature inside the mixer is heated to be 220 to 290 ° C., and the rotation speed of the mixer is rotated at a speed of 10 to 30 rpm to adjust the fine aggregate and the molten recycled synthetic resin. Mixing step of mixing; A molding step of inserting the mixed molten resin and fine aggregate into a mold and molding a permeable block by pressure molding at a pressure of 30 to 40 MPa; And a cooling step of uniformly cooling the surface and the inside of the molded water permeable block for 15 to 20 sec.

Preferably, the regeneration synthetic resin screening step of sorting the plastic bottle used as a container for food and beverage by color, color and material; Pulverizing the selected recycled synthetic resin, but pulverizing the diameter to 0.5 to 2.0 cm; And a washing and drying step of washing and dehydrating and drying the pulverized regenerated synthetic resin, and may be added to the melting furnace.

Preferably, the mixer used in the mixing step includes a cylindrical mixer barrel and a plurality of stirring blades arranged in a step shape along the longitudinal direction on the inner circumferential surface of the mixer cylinder, each of the stirring blades is a portion of the stirring stirring adjacent It may be arranged to overlap with the wings.

Preferably, in the cooling step, water cooling is performed as the cooling tray containing each of the permeation blocks passes through the cooling water tank while being transported by the conveyor, and air is blown by the nozzle through the open upper portion of the cooling tray. By spraying, the permeation block can be air cooled.

According to another aspect of the present invention, a permeation block manufactured by the method for producing a permeation block using the recycled synthetic resin, wherein the permeation block has a hexahedral shape, the regenerated synthetic resin and the fine aggregate constituting the permeation block is 3: 7 It is made by mixing at a ratio, and when formed under pressure at a pressure of 30 to 40 MPa is provided a permeability block comprising a porosity of 20 to 30%.

According to the solution of the present invention, it is environmentally friendly by using a mixture of waste synthetic resin used as an edible container to prepare a water permeable block.

In addition, by increasing the resin compounding ratio compared to the existing can provide a permeable block of enhanced strength.

In addition, the porosity can be increased by lowering the pressing force in the press molding as compared with the existing, thereby increasing the permeability efficiency.

In addition, by increasing the cooling time of the permeation block to prevent burning or melting of the resin to prevent the clogging of the pore and also to prevent the generation of harmful gases can improve the working environment.

1 is a flowchart illustrating a method of manufacturing a pitcher block using recycled synthetic resin according to the present invention.

2 is a block diagram of a mixer and stirring blade according to the present invention

3 is a view for explaining the cooling process of the water permeable block according to the present invention.

Figure 4 is a shape of the pitcher block produced according to the production method of the present invention

5 is a schematic cross-sectional view showing an embodiment of an air nozzle according to the present invention.

The invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Like reference numerals refer to like elements throughout. Meanwhile, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular forms also include the plural unless specifically stated otherwise in the text. As used herein, "comprises" and / or "comprising" refers to the presence of one or more other components, steps, operations and / or elements in which the stated components, steps, operations and / or elements are known. Or does not exclude additions.

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

According to Figure 1, the manufacturing method of the water permeable block using the recycled synthetic resin according to the present invention is the aggregate aggregate heating step (S10), fine aggregate thermal insulation step (S20), melting step (S30), mixing step (S40), molding step (S50) And cooling step (S60).

First, the fine aggregate heating step (S10) is a step of inputting the fine aggregate conveyed by the conveyor to the primary heating furnace and heating it to a predetermined temperature. The fine aggregate heating step is to allow the recycled synthetic resin to be melted by the heating temperature of the fine aggregate when the recycled synthetic resin and the fine aggregate to be described in the steps to be described later are mixed.

Next, the fine aggregate thermal insulation step (S20) is a step of keeping the heated temperature of the fine aggregate is kept constant by inputting the fine aggregate heated in the above step into the secondary heating furnace.

Next, the melting step (S30) is a step of melting the regenerated synthetic resin by the heated temperature of the residual aggregate by inputting the residual aggregate discharged from the secondary heating furnace and the regenerated synthetic resin crushed to a certain size in the melting furnace.

Here, the recycled synthetic resin introduced into the melting furnace is subjected to the sorting step (S100), the crushing step (S200) and the washing and drying step (S300).

The sorting step (S100) is a step of sorting the PET bottle (PET) used as a container for food and beverage by colorless, color and material, and the grinding step (S200) is to crush the regenerated synthetic resin selected in the above, but the diameter is 0.5 ~ 2.0cm It is a step of pulverizing, and the washing and drying step (S300) is a step of washing, dehydrating and drying the pulverized regenerated synthetic resin.

In particular, the screening step is to use a colorless of the recycled synthetic resin can be produced a transparent block of the transparent color, if you use a colored block can be produced according to the color of the corresponding color to obtain the desired color without using a dye This makes it possible to manufacture environmentally friendly pitching blocks and contributes to cost reduction.

Next, in the mixing step (S40), the recycled synthetic resin and the aggregate are added to the mixer at a ratio of 3: 7, and the temperature inside the mixer is heated to be 220 to 290 ° C, and the rotation speed of the mixer is at a speed of 10 to 30 rpm. It is a step of mixing the molten recycled synthetic resin which is rotated to serve as a fine aggregate and a flocculant.

Here, if the internal temperature of the mixer is lower than 220 ℃ can not solidify because it is not melted, whereas if higher than 290 ℃ can be burned due to high heat is preferably limited to the above temperature range.

In addition, the mixing ratio of the recycled synthetic resin and fine aggregates is an important factor for improving the strength, and as the mixing ratio of the recycled synthetic resins increases with respect to the fine aggregates, the cohesive strength of the fine aggregates increases, but the mixing ratio of the recycled synthetic resins is more than necessary. If it is increased, the ductility is increased to increase the possibility of deformation is preferably determined in the above compounding range.

In addition, in the case of the rotational speed of the mixer, the rotational speed in the above range is good mixing efficiency. When the rotation is slower than this range, the stirring efficiency is significantly lowered. However, even if it is rotated faster than the above range, the stirring efficiency is lowered.

The mixer may have a form as in FIG. 2 to increase the stirring efficiency. As shown, the mixer 100 has a cylindrical mixer barrel 110 having an inlet 111 and an outlet 112 and a plurality of staircases arranged in the longitudinal direction on the inner circumferential surface of the mixer barrel 110. It may be composed of a plate or streamlined stirring blades 120.

Here, each of the stirring blades 120 is preferably a portion, for example, the end of the longitudinal direction is disposed to overlap with the other stirring blades adjacent. In the case of a screw-type general stirring blade, the aggregate aggregate and the melted resin are leaned to one side, and thus, it is difficult to obtain a smooth stirring effect, whereas the stirring blade 120 of the present application is disposed in a step shape, so that the aggregate and the molten resin are staircases. Since it flows smoothly along the flow efficiency can be doubled, and thus the stirring efficiency can be doubled.

Next, the molding step (S50) is a step of forming a permeation block by putting a predetermined amount of the mixed molten resin and the residual aggregate into a mold (mold), and by pressure molding at a pressure of 30 ~ 40MPa by a plunger.

Here, the important factor is the pressurization pressure, the larger the pressing force, the porosity is lowered because the pores between the molten resin and the fine aggregate becomes dense, while the smaller the pressing force increases the porosity between the molten resin and the fine aggregate, thereby increasing the porosity. In particular, the permeation block may be better because the larger the porosity, the larger the porosity, so the larger the porosity, the greater the porosity. Can be guaranteed. Porosity when pressurized to the above pressure is 20 to 30%.

For reference, the porosity is Vs, and when the volume of the aggregate permeation block including the void is V, the porosity n is a numerical value obtained by the formula of n = (V-Vs) / V × 100 (%). to be.

Next, the cooling step (S60) is a step of evenly cooling the surface and the interior of the molding block is completed for 15 to 20 seconds.

That is, in the cooling step, as shown in FIG. 3, water cooling is performed as the cooling tray 200 in which the permeation block 1 is accommodated passes through the cooling water tank 400 while being transferred by the conveyor 300. Permeation block through the open upper portion of the cooling tray 200, the air discharged through the air nozzle 510 of the air supply pipe 500 is installed along the movement path of the cooling tray on the upper portion of the cooling tray 200 By spraying on (1), a double cooling method of air cooling the permeation block 1 is taken.

Accordingly, since the external cooling of the permeation block 1 is performed by water cooling, and the internal cooling of the permeation block 1 is simultaneously performed by air cooling, the inside and outside of the permeation block 1 can be cooled overall.

The improvement in cooling efficiency contributes to productivity improvement since the curing time can be significantly reduced compared to the existing curing time of 28 days. In this regard, as described above, the water permeability block 1 of the present invention can increase the cooling efficiency and shorten the cooling time since the porosity is improved compared to the conventional one.

On the other hand, Figure 4 is a photograph of the pitcher block produced by the invention described above.

As described in the foregoing manufacturing process, the permeable block 1 has a hexahedral shape, and is composed of recycled synthetic resin and fine aggregate at a ratio of 3: 7, and is press-molded at a pressure of 30 to 40 MPa to form a porosity of 20 to Up to 30%. The permeable block 1 according to these conditions can obtain a product that satisfies both strength and permeability efficiency.

On the other hand, the air nozzle 510 may be made of a swirl nozzle as shown in FIG. The vortex nozzle is a means for rotating the injected air while increasing the blowing force of the air. At the upper end thereof, a thread forming part 64 having a thread is formed to be fastened to the air supply pipe 500, and the thread forming part 64 is formed. From the bottom thereof, a hollow and conical body portion 65 is formed integrally extending. The body portion 65 has a plurality of air holes 66 which are holes for final injection of air along the spiral direction. It is formed through.

In addition, the outer surface of the body portion 65 is formed with a spiral air groove inner groove 68 coinciding with the air holes 66 arranged in a spiral direction, the air groove inner groove 68 is an air hole ( 66 to guide the jet direction of the air jetted from the spiral direction to form a vortex.

Accordingly, the air injected through the air hole 66 of the vortex nozzle and the spiral air while the inner groove 68 rotates and simultaneously sprays air while forming a vortex, thereby evenly spraying the permeable block 1 while the permeable block (1) The whole is cooled evenly.

In addition, the anti-fouling coating layer coated with the anti-fouling coating composition may be formed around the stirring vane 120 to effectively achieve the prevention and removal of contaminants. The antifouling coating composition includes hydrogen peroxide and sodium metasilicate in a 1: 0.01 to 1: 2 molar ratio, and the total content of hydrogen peroxide and sodium metasilicate is 1 to 10% by weight based on the total aqueous solution. In addition, sodium metasilicate or calcium carbonate may be used as a material for improving the coatability of the antifouling coating layer, but preferably sodium metasilicate may be used. The hydrogen peroxide and sodium metasilicate are preferably 1: 0.01 to 1: 2 as the molar ratio. If the molar ratio is out of the above range, the coating property of the substrate may be reduced or the moisture absorption of the surface may be increased after application, thereby removing the coating film. have.

The hydrogen peroxide and sodium metasilicate are preferably 1 to 10% by weight of the total composition aqueous solution, if less than 1% by weight has a problem that the applicability of the substrate is lowered, if it exceeds 10% by weight crystal due to the increase in the coating film thickness Precipitation is likely to occur.

It is preferable to apply | coat by the spray method as a method of apply | coating the said antifouling coating composition on a base material. In addition, the final coating film thickness on the stirring blade 120 is preferably 500 to 2000 kPa, more preferably 1000 to 2000 kPa. If the thickness of the coating film is less than 500 kPa, there is a problem of deterioration in the case of high temperature heat treatment, and if the thickness of the coating film exceeds 2000 kPa, crystal precipitation of the coated surface is liable to occur.

In addition, the antifouling coating composition may be prepared by adding 0.1 mol of hydrogen peroxide and 0.05 mol of sodium metasilicate to 1000 ml of distilled water, followed by stirring.

In addition, the cooling bath 400 may be formed of a surface protective coating layer of a surface coating material of a metal material in order to prevent corrosion of the surface from dust, contaminants, and the like. The surface protective coating layer is composed of 2.5% by weight zirconium powder, 60% by weight alumina powder, 30% by weight NH ₄ Cl, 2.5% by weight zinc, 2.5% by weight magnesium and 2.5% by weight titanium.

The zirconium powder is excellent in corrosion resistance and heat resistance. This zirconium powder is mixed at 2.5% by weight. If the mixing ratio of the zirconium powder is less than 2.5% by weight, the corrosion resistance and the heat resistance are not greatly improved. On the other hand, if the mixing ratio of the zirconium powder exceeds 2.5% by weight, the above-mentioned effect is not improved further while the material cost is greatly increased. Therefore, the titanium is preferably mixed 2.5% by weight.

The alumina powder is added for the purpose of sintering, tangling, fusion prevention, etc. when heated to a high temperature. When the alumina powder is added in less than 60% by weight, the effect of sintering, tangling and fusion prevention is inferior, and when the alumina powder exceeds 60% by weight, the above-mentioned effect is not further improved, while the material cost is greatly increased. Therefore, it is preferable to add 60 weight% of alumina powders.

The NH ₄ Cl reacts with zinc and magnesium in a vapor state to serve to activate diffusion and penetration. This NH ₄ Cl is added 30% by weight. If NH ₄ Cl is added at less than 30% by weight, it does not react properly with the vaporized zinc and magnesium and thus does not activate diffusion and penetration. On the other hand, when NH ₄ Cl exceeds 30% by weight, the above-mentioned effect is not improved further, while the material cost is greatly increased. Therefore, it is preferable to add 30% by weight of NH ₄ Cl.

The zinc is formulated to prevent corrosion of metals in water and to be used for electrical applications. This zinc is mixed 2.5% by weight. If the mixing ratio of zinc exceeds 2.5% by weight, it will not properly prevent corrosion of the metal on water. On the other hand, when the mixing ratio of zinc exceeds 2.5% by weight, the above-mentioned effect is not improved further, while the material cost is greatly increased. Therefore, the zinc is preferably mixed 2.5% by weight.

Since the pure metal of magnesium has a low structural strength, the magnesium is combined with zinc to increase the hardness, tensile strength and corrosion resistance of the metal. This magnesium is mixed 2.5% by weight. If the mixing ratio of magnesium is less than 2.5% by weight, the hardness, tensile strength and corrosion resistance to salt water of the metal when combined with zinc and the like are not significantly improved. On the other hand, when the mixing ratio of magnesium exceeds 2.5% by weight, the above-mentioned effect is not improved further, while the material cost is greatly increased. Therefore, magnesium is preferably mixed at 2.5% by weight.

The titanium is a light, hard and corrosion-resistant transition metal element has a silver-white metallic luster, and because of its excellent corrosion resistance and low specific gravity, the weight of the titanium is only 60% compared to steel, so that the weight of the coating material applied to the metal base material is reduced but the gloss is increased. It is formulated to have excellent waterproof and corrosion resistance.

This titanium is mixed 2.5% by weight. When the mixing ratio of titanium is less than 2.5% by weight, the weight of the coating material applied to the metal base material is not so much reduced, and the glossiness, waterproofness, and corrosion resistance are not greatly improved. On the other hand, if the mixing ratio of titanium exceeds 2.5% by weight, the above-mentioned effect is not further improved while the material cost is greatly increased. Therefore, the titanium is preferably mixed 2.5% by weight.

The surface coating method of the cooling water tank 400 according to the present invention is as follows.

In order to prevent the oxidation of the cooling water tank 400, the cooling water tank 400 to which the surface protective coating layer is to be formed and the coating material blended in the above configuration are put together in the closing furnace. Argon gas is injected, and maintained at a temperature of 700 ° C to 800 ° C for 4 to 5 hours while argon gas is injected.

By performing the above steps, the zirconium powder, alumina powder, zinc, magnesium, and titanium in a vapor state are formed inside the closure, and the zirconium powder, alumina powder, zinc, magnesium, and titanium blend penetrate the surface of the base material to provide a surface protective coating layer. Is formed.

After the surface protective coating layer is formed, the internal temperature of the coating material / substrate composite is maintained at 800 ° C. to 900 ° C. for 30 to 40 hours, and the surface protection coating layer for preventing corrosion is formed on the surface of the cooling water tank 400. The surface of the cooling water tank 400 and the outside air is isolated. At this time, in performing the process, the temperature change is rapid because the surface protective coating layer of the surface of the cooling water tank 400 may be peeled off.

The surface protective coating layer of the present invention has the following advantages.

Since the surface protective coating layer of the present invention has a very wide range of uses, it can be applied by various methods such as curtain coating, spray painting, dip coating, flooding, and the like.

The surface protective coating layer of the present invention can be applied with a very thin layer thickness in addition to the principle protection against corrosion and / or scale, thereby improving the electrical conductivity as well as material and cost savings. Even after hot forming, a thin electroconductive primer may be applied on top of the application layer if high electrical conductivity is desired.

After the forming process or the hot forming process, the coating material may be retained on the surface of the substrate, for example, to increase scratch resistance, to improve corrosion protection, to meet aesthetic appearance, to prevent discoloration, and to be electrically conductive. And can be provided as a primer for conventional downstream processes (eg, dip and electrophoretic dip coating).

Since a surface protective coating layer made of zirconium powder, alumina powder, NH ₄ Cl, zinc, magnesium, and titanium is applied to the cooling water tank 400 of the present invention, corrosion of the surface of the cooling water tank 400 from dust, contaminants, etc. Can be prevented.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, and the present invention is not limited thereto, and a person having ordinary skill in the art within the technical idea of the present invention. It is obvious that modifications and improvements are possible.

Simple modifications and variations of the present invention are all within the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.

Claims

Residual aggregate heating step (S10) for inputting the fine aggregate into the primary heating furnace to heat the fine aggregate to a predetermined temperature;

Residual aggregate warming step (S20) to insulate the heated fine aggregate into a secondary heating furnace to keep the heated temperature of the fine aggregate constant;

A melting step (S30) of melting the regenerated synthetic resin by the temperature of the fine aggregate by inputting the fine aggregate discharged from the secondary heating furnace and the regenerated synthetic resin pulverized to a predetermined size into the melting furnace;

Mixing the molten resin and the fine aggregate into the mixer, the temperature inside the mixer is heated to 220 ~ 290 ℃, and the rotation speed of the mixer is rotated at a speed of 10 ~ 30rpm to mix the fine aggregate and the molten recycled synthetic resin ( S40);

A molding step of inserting the mixed molten resin and the remaining aggregate into a mold and molding a permeable block by pressure molding at a pressure of 30 to 40 MPa; And

Cooling step (S60) to evenly cool the surface and the inside of the molded water permeable block for 15 ~ 20sec;

Method for producing a pitcher block using a recycled synthetic resin comprising a.
The method according to claim 1,

The regeneration synthetic resin screening step of selecting the plastic bottle used as a container for food and beverage by colorless, colored and materials (S100);

Grinding the selected recycled synthetic resin, the grinding step of grinding to a diameter of 0.5 ~ 2.0cm (S200); And

Washing and dehydration of the pulverized regenerated synthetic resin, drying and washing step (S300); through the manufacturing method of the water permeable block using the regenerated synthetic resin, characterized in that the input to the melting furnace.
The method according to claim 1,

The mixer 100 used in the mixing step includes a cylindrical mixer cylinder 110 and a plurality of stirring blades 120 arranged in a step shape along the longitudinal direction on the inner circumferential surface of the mixer cylinder 110, Each of the stirring blades 120 is a part of the manufacturing method of the pitcher block using the regenerated synthetic resin, characterized in that the overlap is disposed overlapping with the stirring blades.
The method according to claim 1,

In the cooling step (S60), water cooling is performed as the cooling trays 200 in which the permeation blocks 1 are accommodated pass through the cooling water tank 400 while being transported by the conveyor 300, and together with the cooling, Method for producing a water permeable block using a recycled synthetic resin, characterized in that for cooling the water permeable block (1) by injecting air by the air nozzle (510) through the open upper portion of the tray (200).
The method according to any one of claims 1 to 4,

A permeable block manufactured by the method for producing a permeable block using the recycled synthetic resin, wherein the permeable block has a hexahedral shape, and the recycled synthetic resin and the fine aggregate constituting the permeable block are mixed at a ratio of 3: 7, and formed Permeable block comprising a porosity of 20 to 30% as it is pressure-molded at a pressure of 30 to 40 MPa.