KR20210026629A - An recycling sidewalk block, a method of preparing the same and assembly structure using the same - Google Patents

Abstract

The present invention provides a recycled sidewalk block using a waste material of polyethylene cross-linking foam and a manufacturing method thereof. According to the present invention, the recycled sidewalk block comprises: a body unit in which pellets made of a waste material of polyethylene cross-linking foam are heated and compression-formed to be integrated with each other; a footplate unit which is positioned above the body unit and comes in contact with a person when the person walks; and a cushion layer made of polyethylene foam and interposed between the body unit and the footplate unit to be affixed to the body unit and the footplate unit. The recycled sidewalk block of the present invention can recycle polyethylene cross-linking foam incinerated or buried to cause environmental pollution problems, has excellent durability due to reduced damage by water absorption or an impact from the outside, and is elastic to prevent an excessive burden on the human body when walking.

Description

An recycling sidewalk block, a method of preparing the same and assembly structure using the same}

The present invention relates to a sidewalk block used in sidewalks, and more particularly, to a recycled sidewalk block using waste materials of polyethylene crosslinked foam, a method of manufacturing the same, and a recycled sidewalk block assembly structure using the same.

Polyethylene crosslinked foam is widely used as a heat insulating material, sound-absorbing material, and floor mats for buildings.

These polyethylene cross-linked foams are produced as waste materials after use or during manufacturing, and are treated through incineration or landfill. When the polyethylene cross-linked foam waste material is incinerated, harmful substances such as dioxins are generated, and when buried, it does not rot for a long period of time, causing environmental problems.

On the other hand, sidewalk blocks used for sidewalks are continuously arranged and paved to pave sidewalks, sidewalks, residential complexes, plazas, parks, parking lots, etc. in consideration of the aesthetics of the city and the convenience of walking in urban planning. Sidewalk blocks are usually manufactured by molding concrete materials including stone and cement, because concrete is suitable as a material for sidewalk blocks in terms of hardness and heat resistance. However, although the concrete sidewalk block has excellent hardness, it is relatively weak against external impacts, and its strength is lowered by absorbing moisture, so that it is easily damaged. In addition, the hardness is too high, giving a hard feeling when walking, and can give a strain to the knees or feet.

In the background described above, Korean Laid-Open Patent Publication No. 10-2007-0039711 (Patent Document 1) pulverizes waste urethane rubber and waste plastics of waste synthetic resins into 1 to 2 mm using a crusher, then mixes them and molds them. Disclosed is a method of manufacturing a press block by heating and compression molding in According to this method, the elasticity imparting effect is deteriorated because the elastic waste plastic fine powder is interposed between the elasticity imparting waste urethane rubber fine powder. In particular, the elasticity of the waste urethane rubber is deteriorated during the heating and compression molding process. The effect is not great.

On the other hand, Japanese Unexamined Patent Application Publication No. Hei 9-255396 (Patent Document 2) produces a block body by mixing cement and a hardener with waste powder such as incineration ash, waste soil, and stone powder, or fine-grained waste materials such as dam sedimentary soil or slime. However, there is no mention of recycling of the polyethylene cross-linked foam waste material.

In addition, Korean Registered Patent Publication No. 10-1494421 (Patent Document 3) discloses a method of manufacturing a sidewalk block using waste casting sand, but there is no mention of recycling of waste materials of polyethylene crosslinked foam.

Patent Document 1: Korean Patent Application Publication No. 10-2007-0039711 Patent Document 2: Japanese Unexamined Patent Application Publication No. Hei 9-255396 Patent Document 3: Registered Patent Publication No. 10-1494421

The problem to be solved by the present invention is that it is possible to recycle polyethylene crosslinked foam that is incinerated or buried to cause environmental pollution, and has excellent durability and elasticity due to less damage due to external impact or moisture absorption. It is to provide a reclaimed footpath block that does not cause an excessive burden on the human body, a method of manufacturing the same, and a regenerated footpath block assembly structure using the same.

In order to achieve the above object, the playback press block according to the present invention,

A body portion in which pellets made of waste materials of polyethylene crosslinked foam are heated and compression molded to be integrated with each other;

A footrest portion located on the upper portion of the body portion and contacting when walking; And

And a cushion layer made of a polyethylene foam sheet and interposed between the body portion and the footrest portion and adhered to the body portion and the footrest portion, respectively.

In the reclaimed footpath block of the present invention, it is preferable that the polyethylene foam is heat-sealed with the footrest portion by melting the surface facing the footrest portion. More preferably, in the polyethylene foam, a surface facing the footrest portion and a surface facing the body portion are melted, respectively, and heat-sealed to the footrest portion and the body portion, respectively. If necessary, the polyethylene foam may be thermally fused with a surface facing the scaffolding portion with hot melt, or thermally fused with a surface facing the body portion with hot melt.

In the regeneration sidewalk block of the present invention, the body portion may have a coupling groove into which a coupling member for coupling with the adjacent regeneration sidewalk block can be fastened, and the coupling groove is formed so that the outer side of the body portion is opened, and the outer side is opened. It is preferable that it is formed wider in the inner direction than in the part. The regeneration walkway blocks having such coupling grooves may form a regeneration walkway block assembly structure in a form in which adjacent regeneration walkway blocks are coupled by fastening a coupling member to the coupling grooves.

In the reclaimed sidewalk block of the present invention, the footrest portion may be made of a fabric having artificial turf on its surface, or may be a polyvinyl chloride sheet.

The manufacturing method of the reclaimed press block of the present invention,

(S1) cutting the waste materials of the crosslinked polyethylene foam to produce pellets;

(S2) adding the pellets to a sidewalk block-shaped molding mold, heating and compressing them to form a body part;

(S3) adhering a cushion layer made of a polyethylene foam sheet to a lower surface of the footrest portion that contacts when walking; And

(S4) bonding a cushion layer adhered to a lower surface of the footrest portion to an upper portion of the body portion.

The recycled sidewalk block of the present invention is very useful environmentally or economically because it can recycle the polyethylene crosslinked foam that is incinerated or buried to cause a problem of environmental pollution.

In addition, the pellets made of waste materials of polyethylene cross-linked foam are heated and compression molded to create an integral body part with good hardness and impact resistance, and due to the hydrophobic polyethylene nature, there is no deterioration due to moisture absorption, thus solving the problems associated with the use of concrete materials. Can be supplemented.

In particular, the cushioning layer of the polyethylene foam interposed between the footrest and the body and adhered provides good elasticity to protect pedestrians.

In addition, if the body portion is provided with a coupling groove, a rigid reproduction walkway block assembly structure can be formed by fastening a coupling member that engages the adjacent reproduction walkway block.

The following drawings attached to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention to be described later. It is limited to and should not be interpreted.
1 is a schematic cross-sectional view of a reproducing sidewalk block according to an embodiment of the present invention.
2 is a schematic rear view of a reproducing sidewalk block according to an embodiment of the present invention.
3 is a schematic diagram illustrating a fastening structure of a regeneration sidewalk block assembly structure according to an embodiment of the present invention.
Figure 4 is a photograph of a cross-section of the body part of the reproducible press block manufactured according to an embodiment of the present invention.
5 is a photograph of a cross-section of a reproducing sidewalk block manufactured according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention. Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention. It should be understood that there may be equivalents and variations.

1 is a schematic cross-sectional view of a reproducing sidewalk block according to an embodiment of the present invention, FIG. 2 is a schematic rear view of a reproducing sidewalk block according to an embodiment, and FIG. 3 is a reproducing sidewalk block according to an embodiment of the present invention. It is a schematic diagram explaining the fastening structure of the sidewalk block assembly structure.

Referring to FIG. 1, the recycled press block 10 includes a body part 1 in which pellets made of waste materials of polyethylene crosslinked foam are heated and compression molded to be integrated with each other.

The waste material of the polyethylene crosslinked foam is a foam obtained by crosslinking polyethylene through chemical crosslinking or electron beam crosslinking, and as described above, it is widely used as an insulation material for buildings, sound absorbing materials, and floor mats, and the polyethylene crosslinked foam is used after use or during the manufacturing process. Defective products in the product are generated as waste materials. In the present invention, the waste materials of the polyethylene crosslinked foam are pelletized and then integrated with each other by heating and compression molding to be used as the body 1 of the recycled sidewalk block 10. The body portion 1 has good hardness and impact resistance, and does not have a deterioration phenomenon due to moisture absorption due to the hydrophobic polyethylene property, so that problems caused by the use of concrete materials can be compensated. In addition, there is an advantage of preventing environmental problems of the polyethylene cross-linked foam waste material being treated through incineration or burial. The thickness of the body portion 1 can be adjusted as necessary, but may be formed to be 40 to 50 mm, for example.

1 to 3, the body portion 1 provided in the regeneration block 10 is a coupling groove ( 7, 7'), and the coupling groove 7 is formed so that the outer surface of the body part is opened as shown in Figs. 2 and 3, and is formed wider in the inner surface direction than the open part of the outer surface to be reproduced. It is desirable that the sidewalk blocks 10 and 20 are firmly coupled to each other so that they are not separated. Renewable sidewalk blocks having such coupling grooves (7, 7') are regenerated in a form in which the coupling member (11) is fastened to the coupling grooves (7, 7') and adjacent regeneration sidewalk blocks (10, 20) are combined. A sidewalk block assembly structure can be formed. As the coupling member 11, any material capable of withstanding a predetermined load or warpage may be used, such as a molded article in which a waste material of plastic or polyethylene crosslinked foam is pelletized and then heated and compression molded to be integrated with each other.

Returning to Figure 1, the upper portion of the body portion (1), the footrest portion (3) in contact during walking is located.

As the footrest (3), any material that has durability to withstand changes in the external environment and friction during walking can be used, but depending on the purpose of the sidewalk block to be implemented, for example, fabric with artificial turf on the surface is manufactured and used. Alternatively, a polyvinyl chloride sheet or the like can be used.

A cushion layer 5 is interposed between the body portion 1 and the footrest portion 3 to be adhered to the body portion 1 and the footrest portion 3, respectively. The cushion layer 5 is made of a polyethylene foam sheet, and the polyethylene foam may be a crosslinked or non-crosslinked polyethylene foam, but it is preferable to use a crosslinked polyethylene foam, and a foam made of closed cells is preferable. In addition, as is well known, the polyethylene foam sheet is foamed at a magnification of 10 to 40 times, for example, to function as an elastic body protecting the knees and ankles of pedestrians. The polyethylene foam sheet can be easily manufactured according to a well-known method, and due to the hydrophobic polyethylene property, there is no deterioration due to moisture absorption, and thus the function as the cushion layer 5 can be maintained for a long period of time. The thickness of the polyethylene foam sheet is adjustable as necessary, and may be, for example, 3 to 10 mm.

In the reclaimed footpath block 10, it is preferable that the cushion layer 5 made of polyethylene foam is melted on a surface facing the footrest 3 and heat-sealed with the footrest 3. That is, the surface of the cushion layer 5 made of polyethylene foam that faces the footrest 3 is melted by heat treatment, and the cushion layer 5 is melted into the footrest 5 by laminating it on the footrest 3 and pressing immediately. Can be bonded.

More preferably, in the polyethylene foam cushion layer 5, both the surface facing the footrest 3 and the surface facing the body 1 are melted to each of the footrest 3 and the body 1 It can be heat-sealed. Of course, if necessary, the polyethylene foam cushion layer 5 may be thermally fused with the surface facing the footrest 3 and with hot melt, or may be thermally fused with the surface facing the body 1 with hot melt.

It is preferable to manufacture the reclaimed press block of the present invention by the following method.

First, the waste materials of the crosslinked polyethylene foam are cut to produce pellets (step S1).

Polyethylene crosslinked foam waste materials are usually in the form of sheets, cut into predetermined sizes, and pelletized, and techniques for pelletizing waste resin foam materials are well known.

Subsequently, the pellets are put into a press block-shaped molding mold, heated and compressed to form a body part (step S2). Techniques for molding resin pellets by putting them into a mold having a predetermined shape, heating and extruding them are, for example, a manufacturing apparatus for a recycled foamed resin panel of Korean Utility Model Registration No. 283834 or Korean Laid-Open Patent Publication No. 10-2005-0040644. It can be molded using the disclosed method or the like. When forming the body part, as described above, the shape of the mold frame may be changed so as to have a coupling groove into which a coupling member coupled with an adjacent regeneration press block can be fastened. In addition, as shown in the photo of FIG. 4, a body portion having a drainage groove further formed in a grid shape or the like at the bottom may be formed so that the drainage function can be performed.

Then, a cushion layer made of a polyethylene foam sheet is adhered to the lower surface of the footrest that is in contact during walking. The cushioning layer may be bonded to the bottom of the scaffold by heat fusion or hot melt on the bottom of the scaffold.

Subsequently, the cushion layer adhered to the lower surface of the footrest portion is adhered to the upper surface of the body portion. The adhesion of the cushion layer adhered to the lower surface of the footrest portion to the body portion is also heat-sealed or hot melted on the opposite side of the polyethylene foam constituting the cushion layer. A method of bonding by using may be used.

Optionally, a cover material such as a nonwoven fabric may be provided on the lower surface of the body portion.

The regenerated sidewalk block manufactured by the above-described method may be useful as a sidewalk block.

4 is a photograph of a cross-section of a body part of a reproduction press block manufactured by a manufacturing method according to an embodiment of the present invention. Referring to FIG. 4, pellets made of waste materials of polyethylene crosslinked foam are heated and compression molded to be integrated with each other, and a body portion having a drain hole on the lower surface thereof, and a scaffolding portion made of fabric with artificial turf located on the upper portion of the body portion. And, it is made of a polyethylene foam, and is interposed between the body portion and the footrest portion and includes a cushion layer adhered to the body portion and the footrest portion by heat fusion, respectively.

1: body 3: footrest
5: cushion layer 7, 7': mating groove
10, 20: regeneration press block 11: coupling member

Claims (11)

A body portion in which pellets made of waste materials of polyethylene crosslinked foam are heated and compression molded to be integrated with each other;
A footrest portion located on the upper portion of the body portion and contacting when walking; And
A recycled sidewalk block comprising: a cushion layer made of polyethylene foam and interposed between the body portion and the footrest portion and adhered to the body portion and the footrest portion, respectively. The method of claim 1,
The polyethylene foam is a reclaimed footpath block, characterized in that the surface facing the footrest portion is melted and heat-sealed with the footrest portion. The method according to claim 1 or 2,
In the polyethylene foam, a side facing the footrest portion and a surface facing the body portion are respectively melted and heat-sealed to the footrest portion and the body portion, respectively. The method of claim 1,
The polyethylene foam is a reclaimed footpath block, characterized in that the heat-sealed with a hot melt surface facing the footrest portion. The method of claim 1,
The polyethylene foam is a reclaimed sidewalk block, characterized in that the heat-sealed with a hot melt surface facing the body portion. The method of claim 1,
The body portion of the regeneration press block, characterized in that it has a coupling groove that can be fastened with a coupling member that engages with the adjacent regeneration press block. The method of claim 6,
The engaging groove is formed to open the outer surface of the body portion, the regeneration press block, characterized in that formed wider in the inner surface direction than the open portion of the outer surface. The method of claim 1,
The footrest block, characterized in that made of a fabric with artificial turf on its surface. The method of claim 1,
The reclaimed footpath block, characterized in that the footrest part is made of a polyvinyl chloride sheet. (S1) cutting the waste materials of the crosslinked polyethylene foam to produce pellets;
(S2) adding the pellets to a sidewalk block-shaped molding mold, heating and compressing them to form a body part;
(S3) adhering a cushion layer made of a polyethylene foam sheet to a lower surface of the footrest portion that contacts when walking; And
(S4) A method of manufacturing a reclaimed press block comprising the step of adhering a cushion layer adhered to a lower surface of the footrest portion to an upper portion of the body portion. The playback reporting blocks of claim 6 or 7; And
A regeneration sidewalk block assembly structure in which a coupling member is fastened to the connection fixing grooves of the regeneration sidewalk blocks to couple adjacent regeneration sidewalk blocks.

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