KR20140133129A - Method of manufacturing porous elastic eco-friendly secure packaging - Google Patents

Abstract

The present invention relates to a method of manufacturing a porous eco-friendly elastic packaging. The configuration of the present invention comprises a ball forming step (S10) of extrusion-molding a temperature polyurethane (TPU) chip which is an environmentally friendly material and producing a spherical urethane ball; a film forming step (S20) of coating the surface of the urethane ball with a TPU material and forming an adhesive film; a molding step (S30) of putting a plurality of the urethane balls into a mold with a predetermined shape and molding the urethane balls with an elastic packaging; and a recovery step (S40) of recovering the elastic packaging from the frame.

Description

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

More particularly, the present invention relates to a method for manufacturing an environmentally friendly elastic packaging material by coating an adhesive film of a thermoplastic polyurethane material on the surface of a urethane ball of an environmentally friendly material, And the adhesive film coated on the surface of the urethane ball is contacted with and adhered to the adhesive film of the other urethane balls and is molded into an elastic packaging material. In a portion where the adhesive film coated on the urethane ball is not in contact with the other adhesive film, Which is provided with a cavity for securing a smooth drainage and ventilating function due to the gap, and thus, it is possible to manufacture an elastic packaging material which solves various problems caused by a lack of drainage and ventilation in a conventional elastic packaging material. ≪ / RTI >

BACKGROUND ART Conventionally, flooring packages such as sidewalks, bicycle roads, and park trails are usually packed by placing concrete or asphalt on the surface layer, and block packing methods by laying various blocks such as stone, brick, cement and wood on the surface layer.

However, the above method has a problem in that since the strength is strong and there is no elastic feeling, the feeling on walking is hard and the shock absorbing force is low, which may cause injury due to impact.

In addition, the most important part of the children's playground is safety. If the floor surface of the playground does not have sufficient elasticity, it will not only damage the joints of the children's knees, but also cause a safety accident . Therefore, in order to prevent safety accidents, the shock absorptivity of the ordinary playground is good and sand is laid over a certain thickness in order to prevent slippage.

In recent years, however, children's playgrounds have become a hotbed of various pests and pathogens, and not only are they reluctant to play on the playground, but also have been able to abrade the sand due to sand infiltration in shoes or clothes, Problems often arise.

In order to solve the above problems, it has been recently proposed to use polyurethane resin, EPDM (Ethylene Propylene Diene Monomer) chip, The case of installing the elastic packaging material as a whole is increased.

The elastic packaging material is provided with sufficient elasticity on the floor so that the walking feeling of the pedestrian is improved, and the shock is alleviated to prevent the occurrence of safety accidents. However, in the past, Toxic substances such as volatile organic compounds (VOCs) harmful to human bodies are released from recycled materials such as tire chips and recycled rubber chips, and EPDM chips, which are harmful to human bodies.

Further, the conventional elastic flooring materials, which are formed by bonding together composite materials having different properties such as polyurethane resin, EPDM chip, waste tire chip, and recycled rubber chip, are low in adhesiveness with each other and are packed on the floor, In addition, when a damaged or damaged portion of a conventional elastic packaging material becomes watery or penetrates into the inside of the damaged portion, water and other foreign substances are rotten due to long-term water retention, causing odor And causes various fungi, bacteria, and the like.

In particular, the hygienic problems described above have caused adverse effects on the health of children and elderly people with weak immunity.

Further, the conventional elastic flooring material, which is composed of various materials having different sizes for each material, has a problem in that the texture is rough and there is no stereoscopic effect and it can not be aesthetically pleasing.

In order to solve the above-mentioned problems, the applicant of the present invention has proposed a thermoplastic resin composition comprising 60 to 70% by weight of a urethane ball extruded from a thermoplastic polyurethane (TPU) which is nontoxic and harmless to the human body, 20 to 30% (Korea Patent Registration No. 10-1222553) "which can prevent the release of harmful substances to human body by mixing 5-15% by weight of a solvent.

However, the above-mentioned "environmentally friendly elastic packaging material (Korean Patent Registration No. 10-1222553)" which is aesthetically pleasing, is difficult to expect a drainage function due to the structure in which the urethane ball is mixed and adhered via an adhesive, As rain flows into the river, it causes the problem of overflow of the river. In particular, water is accumulated in the upper part of the elastic packaging material, causing inconvenience of walking and slippery safety accidents.

Further, since the ground surface of the elastic packaging material is closed and the ground surface is closed and air is not ventilated from each other, there is a problem in that environmental problems such as contamination of the ground surface are caused.

In addition, benzene, toluene and the like, which are used as the above-mentioned solvents, are substances that release harmful substances to the human body. Even though they use a small amount, they may adversely affect the health of children and elderly people with weak immunity.

In addition, since the adhesive for adhering and fixing the urethane ball uses a curable adhesive, there is a problem that it is difficult to reuse the elastic packaging material.

Korea Patent Registration No: 10-1222553 (Cosmetically Environmentally Friendly Elastic Packing Material)

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve all of the above problems, and an object of the present invention is to provide a urethane ball of an environmentally friendly material by coating an adhesive film of a thermoplastic polyurethane material on the surface of a urethane ball, And the adhesive film coated on the surface of the urethane ball is adhered to the adhesive film of the other urethane balls to be formed into an elastic packaging material. In a portion where the adhesive film coated on the urethane ball is not in contact with the other adhesive film, A method for manufacturing an environmentally friendly elastic packaging material having a cavity capable of producing an elastic packaging material that solves various problems caused by a lack of drainage and ventilation in a conventional elastic packaging material by securing a smooth drainage and ventilation function due to the gap .

Since the urethane ball and the adhesive film constituting the elastic packaging material are made of a thermoplastic polyurethane material, when the use of the elastic packaging material is completed, an eco-friendly elastic packaging material having a cavity capable of effectively reusing resources by being easily recovered and recyclable Method.

Further, since no harmful substance is released to the human body since the conventional solvent packaging material is not used, it is not only environmentally friendly but also provides environment-friendly elastic packaging material And a method for producing the same.

According to another aspect of the present invention, there is provided a method of manufacturing an eco-friendly elastic packaging material, the method comprising the steps of: extruding a thermoplastic polyurethane (TPU) as an eco-friendly material to form a spherical urethane ball (S20) for forming an adhesive film by coating a surface of the urethane ball produced in the ball forming step (S10) with a thermoplastic polyurethane material in a molten state; A molding step S30 of molding a plurality of urethane balls in which a bonding film in a molten state is formed into a mold having a predetermined shape to form an elastic packaging material in step S20, (S40) for retrieving the frame from the frame,

The plurality of urethane balls put into the mold in the molding step S30 are densely packed together and the adhesive film coated on the urethane balls is contacted with and adhered to the adhesive film of the other urethane balls to be firmly fixed to each other,

Since voids are naturally formed at a portion where the adhesive film formed on the urethane ball does not contact the adhesive film of the other urethane balls, the elastic packaging material can secure a smooth drainage and ventilation function, and the urethane ball and the adhesive film are made of thermoplastic polyurethane And the elastic packaging material can be recycled.

The film forming step S20 includes a cooling step S21 for cooling the urethane ball manufactured in the ball forming step S10, a melting step S22 for melting and melting the thermoplastic polyurethane chips in the extruder, And a coating step (S23) of putting the cooled urethane ball into the extruder through the cooling step (S21) to form a molten thermoplastic polyurethane adhesive film on the surface of the urethane ball,

After the coating step (S23) is completed, the urethane ball coated with the adhesive film on the surface is discharged through the extruder, and is injected into the mold of the molding step.

(S50) for forming and fixing a plurality of support rods supporting the elastic packaging material to a lower portion of the elastic packaging material; and a step of forming a support rod at a lower portion of the elastic packaging material, (S60) of compressing and placing the soil,

A plurality of support rods are provided on the lower portion of the elastic packaging material having the voids secured thereto and the earth is pressed and disposed under the elastic packaging material provided with the support rods so that the elastic packaging material is firmly supported through the support rods and the earth, The water flowing through the packaging material can be stored and circulated through the soil having the capillary void so that the drainage function can be further activated, and the support rod is made of a thermoplastic polyurethane material.

In addition, the support-bar forming step S50 may be performed before the forming step S30,

After the support bars are individually extrusion-molded, they are placed in a mold for producing the elastic packaging material, and then the molding step (S30) is performed to insert a urethane ball coated with an adhesive film in the mold, The supporting bar and the elastic packaging material are firmly coupled to each other to be easily formed as one body.

Further, in order to prevent the earth to be crushed and dropped on the lower portion of the elastic packaging material in the soil pressing step S60, the binding network is thermally adhered to the lower part of the supporting rod formed through the supporting rod forming step (S50) (Step S70). The network arrangement step S70 is a step of arranging the nodes in a fixed manner.

Further, in the molding step S30, when a large number of urethane balls are injected into the mold, a pressing step S80 is performed to press the upper portion of the mold through the pressure plate to stably contact the plurality of urethane balls injected into the mold stably. Further comprising:

 A plurality of urethane balls densely arranged in the mold are guided to be in contact with and bonded to each other to secure stable bonding of the elastic packaging material and to induce the elastic packaging material to be shaped into a frame shape.

As described above, according to the manufacturing method of the environmentally-friendly elastic packaging material having the voids according to the present invention, the adhesive film of the thermoplastic polyurethane material is coated on the surface of the urethane ball of the environmentally friendly material, and a plurality of urethane balls, And the adhesive film coated on the surface of the urethane ball is contacted with and adhered to the adhesive film of the other urethane balls and is molded into an elastic packaging material. In a portion where the adhesive film coated on the urethane ball is not in contact with the other adhesive film, And the elastic pavement can be manufactured by securing a smooth drainage and a ventilation function owing to the pores, thereby solving various problems caused by the lack of drainage and ventilation in the conventional elastic packaging material.

Further, since the urethane ball and the adhesive film constituting the elastic packaging material are made of a thermoplastic polyurethane material, once the use of the elastic packaging material is completed, it can be easily recovered and recycled, thereby effectively reusing resources.

In addition, since no harmful substance is released to the human body without using the solvent required in the conventional method of manufacturing the elastic packaging material, it is more environmentally friendly and also has the effect of being safe for the human body in comparison with the conventional elastic packaging material.

1 is a block diagram of a method of manufacturing an environmentally-friendly elastic packaging material having voids according to an embodiment of the present invention;
2 is a view for explaining a method of manufacturing an environmentally-friendly elastic packaging material having the voids shown in Fig. 1
FIG. 3 is a view showing the state of use of the elastic packaging material produced through the manufacturing method of the environmentally-

A method of manufacturing an environmentally friendly elastic packaging material having a cavity 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 to 3 illustrate a method of manufacturing an environmentally-friendly elastic packaging material having a void according to an embodiment of the present invention. FIG. 1 is a block diagram of a method of manufacturing an environmentally- FIG. 2 is a view for explaining a manufacturing method of the environmentally-friendly elastic packaging material having the voids shown in FIG. 1, and FIG. 3 is a view for explaining a method for manufacturing the environmentally- And the state of use of the elastic packaging material.

As shown in the drawing, a method 100 for manufacturing an environmentally friendly elastic packaging material having voids according to an embodiment of the present invention includes a ball forming step S10, a film forming step S20, a forming step S30, And a collection step S40.

As shown in FIG. 1, the ball forming step S10 is a step of forming a thermoplastic polyurethane (TPU) chip, which is excellent in weatherability and wear resistance, is non-toxic, harmful to human body, Shaped urethane balls 10 are produced.

It is needless to say that, in order to improve the weatherability of the urethane ball 10, a small amount of an antioxidant and an ultraviolet ray inhibitor may be added to produce the urethane ball 10.

As shown in FIGS. 1 and 2A, in the film forming step S20, a thermoplastic polyurethane material is coated on the surface of the urethane ball 10 manufactured in the ball forming step S10 in a melted state, As the step of forming the film 20,

A cooling step S21 of cooling the urethane ball 10 manufactured in the ball forming step S10, a melting step S22 of injecting and melting the thermoplastic polyurethane chip into the extruder 2, The cooled urethane ball 10 is put into the extruder 2 to apply a coating step S23 for forming a molten thermoplastic polyurethane adhesive film 20 on the surface of the urethane ball 10 .

2A, the urethane ball 10 cooled through the cooling step S21 is introduced into the extruder 2 through which the molten thermoplastic polyurethane material flows to melt the urethane ball 10 on the surface of the urethane ball 1 The adhesive film 20 of the polyurethane material is coated and then put into the mold 1 of the molding step S30 to be discharged to the exterior.

The reason why the urethane ball 10 is cooled in the cooling step S21 is that since the molten thermoplastic polyurethane material is coated on the surface of the urethane ball 10 due to the high temperature of the melted polyurethane material, (1) is melted to prevent the spherical shape from being broken. Here, the cooling temperature of the urethane ball 10 is preferably about -10 ° C.

As shown in FIGS. 1 and 2C, the forming step S30 is a step of forming a plurality of urethane balls 10, in which the adhesive film 20 in a molten state is formed in the film forming step S20, Into a mold (1) and molding it into an elastic packaging material (A).

As shown in FIG. 2C, the plurality of urethane balls 10 put in the mold 1 in the molding step S30 are densely packed together and the adhesive film 20 coated on the urethane ball 10 is coated with another urethane The adhesive layer 20 formed on the urethane ball 10 is bonded to the adhesive layer 20 of the urethane ball 10 by being adhered to the adhesive layer 20 of the ball 10, Since the air gap 4 is naturally formed at a portion not contacting the membrane 20, the elastic packaging material A can perform a smooth drainage and ventilation function.

Further, since the elastic packaging material A is made of the urethane ball 10 and the adhesive film 20 of the polyurethane material, when the use of the elastic packaging material A is completed, the elastic packaging material A can be easily recovered and recycled.

On the other hand, as shown in FIG. 3A, since the elastic packaging material A shaped and shaped into the shape of the frame 1 has a structure that can be easily assembled like a building block, convenience of construction can be ensured Of course.

Although the frame 1 used in the manufacturing method 100 of the environmentally-friendly elastic packaging material having the voids of the present invention is formed into a square shape, the elastic packaging material A is formed into a rectangular shape. However, no.

As shown in FIGS. 1, 2B and 2C, a support bar forming step S50 of forming and supporting a plurality of support bars 30 supporting the elastic packaging material A in a lower portion of the elastic packaging material A; And a soil pressing step S60 in which the soil 40 is pressed and placed on the lower portion of the elastic packaging material A formed with the support rod 30 through the supporting rod forming step S50 as shown in FIGS. 1 and 2G, ; Further comprising:

A plurality of support rods 30 are provided on the lower portion of the elastic wrapping material A secured with the voids and the soil 40 is pressed and disposed on the lower portion of the elastic wrapping material A provided with the support rods 30, The elastic wrapping material A is securely supported through the support rod 30 and the earth 40 and the water flowing through the elastic wrapping material A is hardly adhered to the soil 40 having the capillary voids, And the drainage function can be further activated.

Further, the soil 40 is an environmentally friendly natural material, and toxic components and environmental contaminants are not discharged to the human body, and a large amount of capillary voids are formed in the interior of the soil 40, can do.

Here, as shown in FIG. 1, the support bar forming step S50 may be performed before the forming step S30,

As shown in FIG. 2B, after the support bars 30 are individually extrusion-molded, they are placed inside a mold 1 for manufacturing the elastic packaging material A, and then, as shown in FIG. 2C, The forming step S30 is carried out to insert the urethane ball 10 coated with the adhesive film 20 into the mold 1 to insert the support bar 30 and the elastic packaging material A The soil pressing step S60 may be performed after the collecting step S40 to be performed later.

Meanwhile, in the soil pressing step S60, the soil 30 is pressed and placed on the lower portion of the elastic wrapping material A. At this time, water is slightly added to the soil 30 so that the soil 40 can be firmly pressed and fixed So that the soil 40 can be firmly pressed and fixed.

As shown in FIGS. 1 and 2D, when a large number of urethane balls 10 are inserted into the mold 1 in the molding step S30, the upper portion of the mold 1 is pressed through the pressure plate 3, And a pressing step (S80) of stably bringing the plurality of urethane balls (10) inserted into the mold (1) stably in close contact with each other,

A plurality of urethane balls 10 densely packed in the frame 1 are brought into contact with and adhered to each other to secure stable bonding of the elastic packaging material A and at the same time, It is preferable to induce the molding to be shaped into a shape of a shape.

As shown in FIG. 1 and FIG. 2E, the collection step S40 is a step of easily collecting the elastic packaging material A formed in the molding step S30 from the mold 1.

As shown in FIGS. 1 and 2F, in order to prevent the soil 40, which is pressed and placed on the lower portion of the elastic wrapping material A, from falling down in the earth pressing step S60, (S70) of thermally bonding and fixing the binding net 50 to the lower portion of the support rod 30 formed through the step S50.

Here, the network arrangement step (S70) may be performed before the earth pressing step (S60) so as to prevent the soil to be compressed and fixed in the earth pressing step (S60).

The binding net 50 used in the method 100 for manufacturing an environmentally friendly elastic packaging material having the voids of the present invention is made of a thermoplastic polyurethane material having the same material as that of the elastic packaging material A, So that it can be recycled.

A method (100) for manufacturing an environmentally friendly elastic packaging material having the voids of the present invention comprising the above-described components is characterized in that an adhesive film (20) of a thermoplastic polyurethane material is coated on the surface of a urethane ball A plurality of urethane balls 10 coated with a film 20 are put into a frame 1 having a predetermined shape so that the adhesive film 20 coated on the surface of the urethane ball 10 is adhered to another urethane ball 10 The void 4 is naturally formed at the portion where the adhesive film 20 coated on the urethane ball 10 is not in contact with the other adhesive film 20 while being contacted and adhered to the membrane 20, And the elastic pavement function is ensured due to the pores (4), so that it is possible to manufacture an elastic packaging material which solves various problems caused by the lack of drainage and ventilation in the conventional elastic packaging material.

Since the urethane ball 10 and the adhesive film 20 constituting the elastic packaging material A are made of a thermoplastic polyurethane material, when the use of the elastic packaging material A is completed, it can be easily recovered and recycled, It has the effect of reusing resources.

In addition, since no harmful substance is released to the human body without using the solvent required in the conventional method of manufacturing the elastic packaging material, it is more environmentally friendly and also has the effect of being safe for the human body in comparison with the conventional elastic packaging material.

The elastic packaging material (A) is manufactured and used as follows through the method (100) for manufacturing an environmentally friendly elastic packaging material having the voids secured according to the embodiment of the present invention.

First, the urethane ball 10 is formed into a spherical shape by extrusion molding a thermoplastic polyurethane (TPU) chip, which is an eco-friendly material. (S10)

Then, as shown in FIG. 2A, the urethane ball produced in the ball forming step S10 is cooled down to -10.degree.

And the cooled urethane ball is put in an extruder through which the molten thermoplastic polyurethane material flows so that the surface of the urethane ball 10 is coated with the molten thermoplastic polyurethane adhesive film 20. (S22), (S23)

On the other hand, as shown in FIG. 2B, after the support rods 30 are individually extrusion-molded, the elastic packaging material A is placed inside the frame 1 for producing the elastic packaging material A. (S50)

Thereafter, as shown in FIG. 2C, a plurality of urethane balls 10 coated with the adhesive film 20 and discharged through the extruder 2 are stacked in the shape of an elastic packaging material A 1), the support rod 30 and the elastic packaging material A are firmly coupled to each other to be integrally formed in the process of being molded into the elastic packaging material A. (S30)

2D, when a large number of urethane balls 10 are inserted into the mold 1, the upper portion of the mold 1 is pressed through the pressure plate 3 to form a plurality of urethane balls 10 inserted into the mold 1, (10) stably and densely bonded to each other. (S80)

2C, a plurality of urethane balls 10 put into the mold 1 are densely packed together and the adhesive film 20 coated on the urethane ball 10 is adhered to the adhesive film 20 of another urethane ball 10 The adhesive layer 20 formed on the urethane ball 10 is not brought into contact with the adhesive layer 20 of the other urethane balls 10 Since the air gap 4 is naturally formed in the region where the elastic material A is not provided, the elastic material A can perform a smooth drainage and ventilation function.

Then, as shown in FIG. 2E, the elastic packaging material A formed in the frame 1 is easily recovered. (S40)

2F, in order to prevent the soil 40 to be pressed and fixed in the soil pressing step 60 from dropping off, the lower part of the support rod 30 is fastened to the lower part of the support rod 30 The net 50 is easily fixed by heat bonding. (S70)

Then, as shown in FIG. 2G, the soil 40 is pressed and placed on the lower portion of the elastic packaging material A on which the support bar 30 is formed, and is firmly fixed to complete the manufacture of the product. (S60)

The elastic packaging material A is firmly supported through the support rod 30 and the soil 40 and the water distributed through the elastic packaging material A is stored through the soil 40 having the capillary voids , And the drainage function can be further activated.

The elastic packaging material A constructed as described above has a structure like a block that can be assembled easily, so that it can be easily installed on a road to be constructed as shown in FIG. 3A.

3B, when the elastic packaging material A having completed the construction as described above is exposed to rain, it is possible to circulate the material through the gap 4 of the elastic packaging material A to discharge the material, In addition, it is possible to smoothly ventilate the ground and the ground through the internal cavity (4), thereby preventing the soil of the ground from being contaminated, and adjusting the humidity of the soil (40) There is an effect that can be done.

Although the elastic packaging material (A) produced by the manufacturing method (100) of the eco-friendly elastic packaging material having the voids of the present invention has been described as a flooring material, it can be used as a soundproofing material for architectural materials Of course.

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. Frame 2. Extruder
3. Pressure plate 4. Pore
10. Urethane ball 20. Adhesive film
30. Support Rod 40. Soil
50. Bonding network A. Elastic packing material
S10. Ball forming step S20. Film forming step
S21. Cooling step S22. Melting step
S23. Coated S30 S30. Molding step
S40. Recovery step S50. Step of forming support rods
S60. Soil pressing step S70. Network Layout Phase
100. Manufacturing method of eco-friendly elastic packaging material with pores

Claims (6)

In the method for producing the elastic packaging material,
A ball forming step S10 of forming a spherical urethane ball 10 by extruding a thermoplastic polyurethane (TPU) chip as an eco-friendly material;
A film forming step (S20) of forming a bonding film (20) by coating a surface of the urethane ball (10) produced in the ball forming step (S10) with a thermoplastic polyurethane material in a molten state;
A molding step in which a plurality of urethane balls 10 in which the adhesive film 20 in a molten state is formed is put into a mold 1 having a predetermined shape and molded into an elastic packaging material A S30); And
And a recovery step S40 of recovering the elastic packaging material A molded in the molding step S30 from the mold 1,
The plurality of urethane balls 10 put in the mold 1 in the molding step S30 are densely packed together and the adhesive film 20 coated on the urethane ball 10 is adhered to the adhesive film 20 And is firmly fixed to each other to be formed into the elastic packaging material (A)
The voids 4 are naturally formed at the portions where the adhesive film 20 formed on the urethane ball 10 is not in contact with the adhesive film 20 of the other urethane balls 10 so that the elastic packaging material A is smoothly discharged And the urethane ball 10 and the adhesive film 20 are made of a thermoplastic polyurethane material so that the elastic packaging material A can be recycled. Thus, the manufacturing of the environmentally- Way.
The method according to claim 1,
The film forming step (S20)
A cooling step S21 of cooling the urethane ball 10 manufactured in the ball forming step S10,
A melting step (S22) for putting the thermoplastic polyurethane chip into the extruder (2) and melting the thermoplastic polyurethane chip,
A cooling step (S21) of cooling the urethane ball (10) into the extruder (2) to form a molten thermoplastic polyurethane adhesive film (20) on the surface of the urethane ball S23, < / RTI >
The urethane ball 10 coated with the adhesive film 20 on the surface after the coating step S23 is completed is discharged through the extruder 2 and charged into the mold 1 of the molding step S30 Wherein the pores are formed on the surface of the elastic material.
The method according to claim 1,
A support bar forming step (S50) of forming and supporting a plurality of support bars (30) for supporting the elastic packaging material (A) on the lower part of the elastic packaging material (A)
And a soil pressing step (S60) of pressing the soil (40) under the elastic packaging material (A) having the support rod (30) formed through the supporting rod forming step (S50)
A plurality of support rods 30 are provided on the lower portion of the elastic wrapping material A having the voids secured thereto and the soil 40 is pressed and disposed on the lower portion of the elastic wrapping material A provided with the support rods 30, Not only the packaging material A is firmly supported through the support rod 30 and the soil 40 but also the water distributed through the elastic packaging material A can be stored and distributed through the soil 40 having the capillary voids So that the drainage function can be further activated,
Wherein the support bar (30) is made of a thermoplastic polyurethane material.
The method of claim 3,
The forming of the supporting bar (S50) may be performed before the forming step (S30)
After the support bars 30 are individually extruded and molded, they are placed in a mold 1 for manufacturing the elastic packaging material A and then the molding step S30 is performed to bond the molds 1 The support rod 30 and the elastic packaging material A are firmly coupled to each other and are integrally formed in a process of molding the elastic packaging material A by injecting the urethane ball 10 coated with the membrane 20 Wherein the pores are formed on the surface of the elastic material.
The method of claim 3,
In order to prevent the soil 40 to be crushed and disposed on the lower portion of the elastic wrapping material A from dropping off in the soil pressing step S60, (S70) of thermally adhering and fixing the binding net (50) to a lower portion of the bag (50).
The method according to claim 1,
When a large number of urethane balls 10 are inserted into the mold 1 in the molding step S30, the upper part of the mold 1 is pressed through the pressure plate 3 to form a plurality of urethane balls 10) are stably in contact with each other stably,
A plurality of urethane balls 10 densely packed in the frame 1 are guided to be in contact with and bonded to each other to secure stable bonding of the elastic packaging material A, Wherein the elastic member is guided so as to be formed into a shape of a shape.

Images