KR20100103900A - Elastic pave structure and method for constructing thereof using recycled plastic - Google Patents

Abstract

PURPOSE: An elastic pavement structure and an elastic pavement method using recycled plastic are provided to reduce manufacturing costs by reusing waste rubber and waste plastic and to improve durability and thermal resistance. CONSTITUTION: An elastic pavement structure(100) using recycled plastic comprises a lower cushion layer(120), a fiber layer(130), and an upper cushion layer(140). The lower cushion layer is spread on the top of a supporting layer(110) for supporting the elastic pavement structure. The fiber layer is inserted between the lower and upper cushion layers. The upper cushion layer made of urethane resin(142) and plastic chips(144) is formed on the top of the lower cushion layer.

Description

Elastic Pave Structure and Method for constructing one using recycled plastic}

The present invention relates to an elastic packaging body and an elastic packaging method using recycled plastic. More specifically, in forming floor packaging materials of various sports facilities such as bicycle roads, jogging paths, trails, and multi-purpose sports grounds, waste plastic chips and waste plastic chips are used to recycle, recycle, and improve the environment and elasticity and durability. It relates to an elastic packaging body and an elastic packaging method using recycled plastic using.

As the industry develops, synthetic waste such as waste tires and rubber and plastics is increasing. However, these wastes are difficult to disintegrate naturally, and the disposal of waste rubber and plastic waste has become a social problem as it requires a considerable cost to treat wastes through separate treatment technologies.

Meanwhile, as the quality of life improves, the desire for a pleasant environment and the desire for health promotion are increasing day by day. Accordingly, various sports facilities such as bicycle paths, jogging trails, trails, parks, and multi-purpose stadiums are formed in various places, and the bottom surface of these sports facilities is formed of an elastic material so that users can use the facilities more comfortably. Is in the trend.

However, in general, such an elastic packaging is usually used for 3 to 5 years, so that the surface may be discolored or damaged due to factors such as ultraviolet rays and external impacts, and the layers of the elastic packaging are separated and damaged. There was a problem falling.

In addition, the conventional elastic packaging method has a problem that the upper layer and the lower layer using a black EPDM (Ethylene Propylene Dienemethylene) rubber chip having an average diameter of 2 to 4 mm and a urethane package with a thickness of 3 mm or more is easy to peel off.

On the other hand, in the past, after the basic construction of asphalt or concrete for the elastic paving, the elastic paving material was installed on the upper part, the conventional elastic paving method is a problem that takes excessive cost and construction period for asphalt paving or concrete paving There was this.

In order to solve the above problems, the present invention is excellent in durability, heat resistance, chemical resistance, etc., and can reuse the waste rubber and waste plastics, which is environmentally friendly and can reduce manufacturing costs, and provides a beautiful appearance with an anti-slip surface. An object of the present invention is to provide an elastic packaging body using recycled plastics and an elastic packaging method for making such elastic packaging.

The present invention in order to achieve the above object is formed of any one of asphalt, concrete, rubber asphalt, soil cement; And an upper cushion layer formed on the upper portion of the support layer by spraying a mixture of recycled soft plastic, precipitated calcium carbonate, plasticizer, and ultraviolet stabilizer and melted plastic chip and urethane resin. do.

Preferably, the elastic package further comprises a lower cushion layer including a rubber chip and a urethane binder formed by grinding rubber, wherein the lower cushion layer is formed between the support layer and the upper cushion layer.

In addition, between the lower cushion layer and the upper cushion layer may further include a fiber layer including a glass fiber.

In addition, the lower cushion layer may further include masato.

In addition, the rubber chip is characterized in that the styrene-butadiene rubber (SBR: styrene-butadiene rubber) having a particle diameter of 5 ~ 7㎜.

In addition, the plastic chip may further include a natural flavor.

On the other hand, the present invention comprises the steps of: a) mixing the soil, cement and water to form a support layer; And b) spraying a mixture of recycled soft plastic, precipitated calcium carbonate, plasticizer and ultraviolet light stabilizer on top of the support layer to melt the plastic chip and urethane resin to form an upper cushion layer. Provide the packaging method.

Preferably, the step after step a) further comprises the step of forming a lower cushion layer by stirring and pouring a rubber chip and a urethane binder formed by grinding rubber on the upper portion of the support layer, the upper cushion layer is the lower Characterized in that the upper portion of the cushion layer.

In addition, a fiber layer including glass fibers may be further formed between the lower cushion layer and the upper cushion layer.

In addition, the lower cushion layer may further include masato.

The present invention has the advantage of reducing the cost and eco-friendly by recycling waste tire chips and waste plastic chips. In addition, according to the present invention, it is possible to improve the elasticity and durability of the elastic package, it is possible to form a surface of the elastic package that can be slipped while being beautiful.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

1 is a view showing a cross-section of the elastic package 100 according to a preferred embodiment of the present invention.

The elastic package 100 according to a preferred embodiment of the present invention includes a lower cushion layer 120, a fibrous layer 130, the upper cushion layer 140.

The lower cushion layer 120 is disposed on an upper portion of the support layer 110, which is a base layer for supporting the elastic package 100. Here, the support layer 110 is preferably a soil cement base layer which is solidified by mixing water and cement in the soil of the target site to which the elastic package 100 is to be installed. As such, the support layer 110 formed of a small cement can reduce the breakdown phenomenon due to cracking and the like by being less affected by different shrinkage and expansion on the temperature, and has the strength and durability necessary for elastic packing. In addition, compared with the case of forming the support layer 110 with asphalt or concrete, the amount of raw materials to be introduced is significantly less, it has the effect of reducing the cost.

On the other hand, if the ground is already paved with asphalt or concrete to form the lower cushion layer 120 thereon, the lower cushion layer (not forming the support layer 110 formed of the above-mentioned small cement) 120) may be formed.

The lower cushion layer 120 is a resilient layer disposed on the support layer 110 and includes a rubber chip 122, a urethane binder 124, and a masato 126.

The rubber chip 122 is preferably made of styrene-butadiene rubber (SBR). The reason is that styrene-butadiene rubber is not only excellent in oil resistance, heat resistance and chemical resistance, but also easily obtained by crushing various rubber products such as automobile tires, shoes, rubber hoses, belts, etc. to a predetermined size. This is because there is an advantage in that the manufacturing cost can be reduced. More preferably, the rubber chip 122 is obtained by grinding the SBR waste tire chip to have a particle diameter of 5 to 7 mm.

The rubber chip 122 is installed on the support layer 120 after mixing and stirring with the urethane binder 124 for adhering the rubber chip 122 to form the lower cushion layer 120.

At this time, in order to increase the hardness of the lower cushion layer 120, sifted masato 126 may be further added. Here, the reason why the Masato 126 is used to improve the hardness of the lower cushion layer 120 is that the Masato 126 can be easily obtained at the site where the elastic package 100 is to be constructed and is environmentally friendly. There is this.

The lower cushion layer 120 reduces the cost of using the urethane binder 124 chemically and uses rubber chips 122 that are discarded and Masato 126 that can be directly supplied on site, thereby reducing costs and being environmentally friendly. Has an advantage.

The fiber layer 130 is inserted between the lower cushion layer 120 and the upper cushion layer 140 to improve the adhesive strength between the lower cushion layer 120 and the upper cushion layer 140, so that the temperature difference or the outside between the two layers It prevents the separation phenomenon caused by the impact from, and serves to improve the tensile strength. In addition, as the adhesive force between the lower cushion layer 120 and the upper cushion layer 140 is improved by the fiber layer 130, the urethane resin sprayed on the lower cushion layer 120 to form the upper cushion layer 140 is formed. Waste can be reduced by more than 30%.

The fiber layer 130 is preferably formed of glass fiber, glass fiber is excellent in heat resistance, chemical resistance, tensile strength and less elongation separation of the lower cushion layer 120 and the upper cushion layer 140 This is because there is a suitable property as a component to prevent the.

The upper cushion layer 140 is formed by mixing the liquid urethane resin 142 and the plastic chip 144 on top of the lower cushion layer 120 on which the fiber layer 130 is installed.

The plastic chip 144 is formed by mixing and melting the soft plastic, the precipitated calcium carbonate and the plasticizer, and then cutting the plastic chip into a predetermined size or shape while cooling. By doing so, the plastic chip 144 having a constant size or shape can improve the durability of the elastic package 100, make the surface of the elastic package 100 beautiful, and allow non-slip surface treatment naturally.

Soft plastics constituting the plastic chip 144 include PVB resin (PolyViny Butyral copolymer), AS resin (Acrylonitrile Styrene copolymer), ABS resin (Acrylonitrile Butadiene Styrene copolymer), SBS resin (Styrene-Butadiene-Styrene block copolymer), Styrene-based polymers including polystyrenes having atactic molecular structures such as SEBS resin (Styrene Ethylene Butylene Styrene copolymer) and polystyrenes, polyesters, polycarbonates, polyethers, polys having copolymers and isotactic molecular structures Condensed polymers such as amide and polyoxymethylene, acrylic polymers such as polyacrylic acid, polyacrylic acid ester, polymethyl methacrylate, air of polyethylene, polypropylene, polybutene, poly 4-methylpentene-1, ethylene and propylene Such as polyolefin, polyvinyl chloride, polyvinylidene chloride, polyvinylidene fluoride Thermoplastic resins such as polymers of vinylhalogen may be used, and are not limited to the types listed. Such soft plastics may use new products, but it is preferable to use recycled materials in view of cost reduction and environmental protection.

The precipitated calcium carbonate is manufactured by chemically processing limestone to improve the frictional resistance, bursting strength, tensile strength, hardness of the soft plastic, and increase the specific gravity of the plastic chip 144 forming the upper cushion layer 140. The finish surface is improved, and the deformation of the product is prevented, and the plastic chip 144 is not lost by rain water.

The plasticizer is an organic material that facilitates molding at high temperature by increasing thermoplasticity of the soft plastic, which is thermoplastic, and DOP (dioctylphthalate), DOA (dioctyl adipate), TCP (tricresyl postate) and the like are used. Can be. These plasticizers increase the plasticity of the soft plastic and at the same time play a role of improving heat resistance, cold resistance and flame resistance.

Plastics, on the other hand, are made up of long strings of molecules, and the stronger the force pulling them between the molecules, the harder it becomes. When the plasticizer is interrupted between the molecules of the plastic, the direct pulling force between the plastic molecules is weakened, and thus the plasticizer is well bent. In view of this, the plasticizer may be well mixed with the plastic, that is, it has a compatibility. Do.

Preferably, when the plastic chip 144 is formed, the upper cushion layer 140 exposed to sunlight by polymerizing or adding an ultraviolet light stabilizer may have improved light resistance and weather resistance to ultraviolet rays. As the UV stabilizer, it is preferable to use a benzophenone series which is excellent in compatibility with plastics and widely used in various applications.

In addition, the manufacture of the plastic chip 144 may be added to the flavor to remove the specific unpleasant odor generated in the plastic, such a flavor is not particularly limited, orange oil, lemon oil, lime oil, citron oil, lavender oil And natural flavors such as peppermint oil, eucalyptus oil, jasmine oil, cypress oil, green tea essential oil and herbal oil. The said fragrance may be used individually or in combination of 2 or more types.

In addition, natural pigments such as ocher and artificial calcined soil may be added to produce the color of the plastic chip 144. As described above, it is possible to add comfort and beauty by adding natural flavorings and natural pigments, and by using natural materials instead of artificially synthesized chemical materials, it is possible to form a more environmentally friendly elastic package 100.

In addition, by adding a luminous material to the plastic chip 144 so that the elastic packaging material 100 emits light, it is possible to provide safety measures when driving or walking at night. At this time, the upper surface of the upper cushion layer 140 may further perform a treatment such as peeling the urethane resin 142 of the surface so that the plastic chip 144 containing the luminous material is exposed to light after the photoluminescence. .

Due to the plastic chip 144, the elasticity and durability of the upper cushion layer 140, as well as the beauty of the surface is improved, it is possible to prevent the slip of the surface of the upper cushion layer 140.

2 is a flow chart of the elastic packaging method according to a preferred embodiment of the present invention.

Referring to Figure 2 will be described the construction process of the above-mentioned elastic package 100.

First, after spraying cement and water to the soil of the target site to form the elastic package 100, and mixed and solidified to form a support layer 110 consisting of a small cement (S10). At this time, the mixing ratio of soil and cement is preferably 100 to 200 parts by weight of soil based on 10 parts by weight of cement, the thickness of which is 90 to 100 mm that the support layer 110 formed of a small cement can give sufficient strength. It is good to be.

If it is difficult to form the soil cement at the site because the ground of the site is weak, it is possible to mix the soil cement at the factory and install it at the site.However, considering the cost aspect, Direct casting of is more preferred.

Subsequently, after mixing the rubber chip 122, the urethane binder 124 and Masato 126 by using a stirrer to flatly install the mixture on top of the support layer 110 with a rubber wrapping machine as shown in FIG. A lower cushion layer 120 is formed (S20).

At this time, the rubber chip 122 and the urethane binder 124 is preferably blended 90 to 100 parts by weight of the rubber chip 122 based on 10 parts by weight of the urethane binder 124, which is 90 parts by weight of the rubber chip 122 If it is less than the elasticity is reduced to the lower cushion layer 120, if it exceeds 100 parts by weight because the adhesiveness of the rubber chip 122 by the urethane binder 124 is inferior. In addition, the content of masato 126 to improve the hardness is preferably 20 ~ 30wt% based on the total weight of the lower cushion layer 120, which is less than 20wt%, the effect of improving the hardness, 30wt If it exceeds%, the hardness is excessive and the elastic force is reduced.

The lower cushion layer 120 is installed 15 mm to 25 mm, preferably 20 mm thick, on the support layer 110 to absorb shocks from the top. If the thickness of the lower cushion layer 120 is less than 15 mm, it is difficult to exert sufficient elastic force, and if the thickness of the lower cushion layer 120 is more than 25 mm, it becomes excessively thick and economically wasteful.

On the other hand, the particle diameter of the rubber chip 122 included in the lower cushion layer 120 is preferably 5mm ~ 7mm, which is the workability when the particle diameter of the rubber chip 122 is 5mm ~ 7mm Considering that it has excellent and good elastic force. In addition, when the particle diameter of the rubber chip 122 exceeds 7mm, the overall thickness of the lower cushion layer 120 is forced to be thicker than necessary, which is uneconomical.

Thereafter, before the lower cushion layer 120 is cured, glass fibers are formed on the upper surface of the lower cushion layer 120 to form the fiber layer 130 (S30), and the lower cushion layer 120 having the fiber layer 130 formed thereon. 4) The urethane resin and the plastic chip 144 are mixed and stirred with the spray equipment of FIG. 4 or by using a squeegee or a dedicated sprayer to form the upper cushion layer 140 having a thickness of 2 to 5 mm (S40). . Preferably, the mixture of the urethane resin 142 and the plastic chip 144 is sprayed with a spray device so that emboss is formed on the surface to prevent slippage of the surface.

At this time, the mixing ratio of the plastic chip 144 and the urethane resin 142 constituting the upper cushion layer 140 is preferably 300 to 400 parts by weight of the plastic chip 144 based on 100 parts by weight of the urethane resin 142. If the plastic chip 144 is less than 300 parts by weight, the elastic force of the upper cushion layer 140 may be reduced. If the plastic chip 144 is more than 400 parts by weight, the adhesive strength between the plastic chips 144 may be reduced.

The elastic package 100 undergoes the above-mentioned curing while paying attention to the impact or heavy load being applied during curing (S50).

The elastic packaging body 100 formed as described above has an advantage of not having to install an expansion joint because of excellent elasticity and elastic resistance.

The surface of the elastic packaging body 100 formed by the above process may be used for various purposes by marking a pattern or a line according to the purpose.

3 is a cross-sectional view showing an elastic packaging body according to another embodiment of the present invention.

Elastic packaging 200 according to another embodiment of the present invention by directly installing the upper cushion layer 140 to the upper portion of the support layer 210 formed of asphalt or concrete or rubber asphalt which is already formed previously Can be formed. In this case, the method of installing the upper cushion layer 140 may be performed by the same method as the above-described step S40.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a view showing a cross section of the elastic package according to a preferred embodiment of the present invention.

2 is a flow chart of the elastic packaging method according to a preferred embodiment of the present invention.

3 is a cross-sectional view showing an elastic packaging body according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100,200: elastic package 110,210: support layer

120: lower cushion layer 122: rubber chip

124: urethane binder 126: Masato

130: fiber layer 140: upper cushion layer

142: urethane resin 144: plastic chip

Claims (10)

A support layer formed of any one of asphalt, concrete, rubber asphalt, and soil cement; And And an upper cushion layer formed on the upper portion of the support layer by spraying a mixture of a plastic chip and a urethane resin containing recycled soft plastic, precipitated calcium carbonate, a plasticizer and an ultraviolet stabilizer. The method of claim 1, The elastic package further comprises a lower cushion layer comprising a rubber chip and a urethane binder formed by pulverizing the rubber, the lower cushion layer is formed between the support layer and the upper cushion layer sieve. The method of claim 2, An elastic packaging body further comprising a fiber layer including glass fibers between the lower cushion layer and the upper cushion layer. The method of claim 2, The lower cushion layer is elastic packaging, characterized in that it further comprises Masato. The method of claim 2, The rubber chip is a styrene-butadiene rubber (SBR: styrene-butadiene rubber) having a particle diameter of 5 ~ 7㎜. The method of claim 1, The plastic chip is characterized in that it further comprises a natural fragrance. a) mixing soil, cement and water to form a support layer; And b) forming an upper cushion layer by spraying a mixture of recycled soft plastic, precipitated calcium carbonate, plasticizer and ultraviolet light stabilizer on top of the support layer and spraying a mixture of molten plastic chip and urethane resin. Method. The method of claim 7, wherein To step after step a) above. Further comprising the step of forming a lower cushion layer by stirring and pouring a rubber chip and a urethane binder formed by grinding the rubber on the upper portion of the support layer, The upper cushion layer is an elastic packaging method, characterized in that formed on top of the lower cushion layer. The method of claim 8, Elastic packaging method characterized in that the fiber layer comprising a glass fiber is further formed between the lower cushion layer and the upper cushion layer. The method of claim 8, The lower cushion layer is an elastic packaging method characterized in that it further comprises Masato.

Images