KR102444185B1 - Recycled rubber flooring with reinforcement plate and its manufacturing method - Google Patents

Abstract

The present invention relates to a reclaimed rubber flooring material to which a reinforcing plate having an improved elastic force and a reinforcing plate combined with an improved upper and lower reclaimed rubber layers by a central reinforcing plate is integrally combined with a reinforcing plate in which the strength is increased and a stronger bond is formed. A regenerated rubber layer formed through a process of mixing water with regenerated rubber powder pulverized to a size smaller than a predetermined size of the included waste tires for large vehicles and steaming them with high-temperature steam by microwave or high-frequency heating; In the reclaimed rubber flooring material in which a reinforcing plate made of at least any one of metal, synthetic resin, and wood and provided with a plurality of coupling holes perforated up and down is integrally coupled to the inside of the regenerated rubber layer, the regenerated rubber layer is set to strengthen the tin-like restoring force. It forms a structure in which a plurality of layers having the following thickness are stacked, and the regenerated rubber powder is melted by high heat to form a melting surface in which the powder particles are not exposed on the surface, and the coupling hole provided in the reinforcing plate is formed. In order to increase the adhesion between the reclaimed rubber layer and the reinforcing plate, inner jaws are formed on the upper and lower sides to achieve a step difference in the structure in which the upper and lower layers are stacked against each other, and the upper side of the inner jaw is characterized in that a concave-convex portion is formed to strengthen the adhesion. A reclaimed rubber flooring with reinforcing plate is proposed.
In addition, the waste material grinding process (S10), the reclaimed rubber powder sorting process (S20), the steam heating process (S30), the cover bonding process (S41), the insert injection process (S40) is a manufacturing method of a reclaimed rubber flooring material that proceeds sequentially In the waste material grinding process (S10), the waste tires for large vehicles containing 70% or more of natural rubber components are pulverized to a certain size or less, and in the regenerated rubber powder sorting process (S20), foreign substances contained in the waste materials are caught and , a regenerated rubber powder having a diameter of 7 mm or less is selected, and in the steam heating process (S30), 0.5 to 2 wt% of water is mixed with 100 wt% of the regenerated rubber powder, and then the mixture is steamed with high-temperature steam to remove the regenerated rubber powder. Desulfurizes harmful sulfur components, but in the cover bonding process (S41), nappa leather is installed in close contact with the inner surface of the lower mold and upper mold in advance, and in the insert injection process (S40), powder particles are not exposed on the surface of the lower mold and upper mold A regenerated rubber layer forming a plurality of laminated structures is formed by supplying heated regenerated rubber step by step to form a melting surface, and a reinforcing plate is placed on the upper side of the regenerated rubber, and then heated regenerated rubber is supplied again to form a plurality of laminates. We propose a method for manufacturing a reclaimed rubber flooring with a reinforcing plate coupled thereto, characterized in that a reclaimed rubber layer constituting the structure is formed.
Therefore, the present invention can reinforce the strength by bonding a reinforcing plate made of any one of metal, synthetic resin, and wood between the reclaimed rubber layers stacked up and down, and the upper and lower regenerated rubber layers through a plurality of coupling holes formed in the reinforcing plate. These are integrally combined to manufacture a more robust flooring material.

Description

Recycled rubber flooring with reinforcement plate and its manufacturing method

The present invention relates to a flooring made of reclaimed rubber, and more particularly, to a reinforcing plate having an increased strength and a more robust coupling by integrally combining upper and lower regenerated rubber layers with improved elasticity and a reinforcing plate in the center by insert injection. It relates to a recycled rubber flooring material and a manufacturing method therefor.

In general, the elastic flooring material is to reduce the burden on the body and secure safety by adjusting the landing shock during driving or walking to increase the shock-absorbing characteristics when the foot lands on the ground. In addition, it has the characteristic of improving the exercise performance necessary for running and walking by lowering the attenuation of the floor repulsion force that occurs as a reaction of body acceleration after landing.

These elastic flooring materials are used in land facilities such as running or jogging, trails, pedestrian paths, and bicycle paths, and various types of flooring materials such as elastic rubber flooring, epoxy flooring, and elastic PVC flooring are used depending on the floor material used.

And it is widely known that the elastic flooring material uses polyurethane (Polyurethan) chips and EPDM (Ethylene Propylene Diene Terpolymer) chips. The elastic flooring material using rubber chips is roughly divided into a rubber chip elastic flooring material of a construction method in which rubber chips are installed, and a mat type elastic flooring material of a method in which a rubber chip is pressed and molded into a mat or block of a desired size and color.

However, conventional elastic flooring materials using polyurethane chips, etc. contain heavy metals such as mercury, which are pollutants harmful to the human body, corrosion and aging of the upper layer easily occur, and thus have poor durability. There is a problem that the physical properties change. The method of laying rubber chips has a problem in that it cannot meet standards for sports facilities, etc. because it is difficult to manage uniform quality such as elasticity varies depending on thickness, humidity, curing temperature, and the number of times of construction.

In addition, in order to provide the best performance in various sports events, an elastic flooring material having excellent elasticity and shock absorption is required, but a simple rubber chip has a problem in that it is difficult to meet these demands.

In order to solve this problem, Patent Registration No. 10-1179318 discloses that it maintains elasticity suitable for walking or running, has excellent shock absorption, can minimize the rate of change of elasticity due to changes in temperature and season, and prevents slippage. It provides an elastic flooring material that can be effectively prevented, is simple to construct, and can reduce manufacturing costs, and is installed on floors that require elasticity, such as on land facilities, trails, pedestrian paths, bicycle paths, and parks.

However, the conventional elastic flooring material has a complicated configuration and shape, which increases the manufacturing cost and product cost, and it is not easy to firmly combine a plurality of layers made of different materials, and there is a limit in strength to support a load. .

The present invention is to solve the above problems, and to provide a reclaimed rubber flooring combined with a reinforcing plate in which the upper and lower regenerated rubber layers and the reinforcing plate at the center are integrally combined to improve strength and achieve a firm coupling, and a method for manufacturing the same. There is a purpose.

Another object of the present invention is to provide a reclaimed rubber flooring material combined with a reinforcing plate having improved elasticity and shape restoration through a process of mixing regenerated rubber powder constituting the regenerated rubber layer with water and steaming with high-temperature steam, and a method for manufacturing the same. .

The reclaimed rubber flooring combined with the reinforcing plate according to the present invention is obtained by mixing water with regenerated rubber powder obtained by pulverizing waste tires for large vehicles containing 70% or more of natural rubber to a size smaller than a certain size by microwave or high frequency ( high frequency) a regenerated rubber layer formed through a process of steaming with high-temperature steam by heating; In the reclaimed rubber flooring material in which a reinforcing plate made of at least any one of metal, synthetic resin, and wood and provided with a plurality of coupling holes perforated up and down is integrally coupled to the inside of the regenerated rubber layer, the regenerated rubber layer is set to strengthen the tin-like restoring force. It forms a structure in which a plurality of layers having the following thickness are stacked, and the regenerated rubber powder is melted by high heat to form a melting surface in which the powder particles are not exposed on the surface, and the coupling hole provided in the reinforcing plate is formed. In order to increase the adhesion between the reclaimed rubber layer and the reinforcing plate, inner jaws are formed on the upper and lower sides to achieve a step difference in the structure in which the upper and lower layers are stacked against each other, and the upper side of the inner jaw is formed with a concave-convex portion to strengthen the adhesion. characterized.

In addition, the manufacturing method of the reinforcing rubber flooring combined with the reinforcing plate according to the present invention includes a waste material grinding process (S10), a reclaimed rubber powder sorting process (S20), a steam heating process (S30), a cover bonding process (S41), and insert injection. In the method of manufacturing a regenerated rubber flooring material in which the process (S40) is sequentially performed, in the waste material grinding step (S10), a waste tire for a large vehicle containing 70% or more of natural rubber is pulverized to a predetermined size or less, and regenerated rubber powder In the sorting process (S20), foreign substances contained in the waste material are caught, and the regenerated rubber powder having a diameter of 7 mm or less is selected. In the steam heating process (S30), 0.5 to 2 wt% of water is added to 100 wt% of the regenerated rubber powder After mixing, desulfurization of harmful sulfur components from the regenerated rubber powder is desulfurized by steaming the mixture with high-temperature steam, but in the cover bonding process (S41), nappa leather is installed in close contact with the inner surfaces of the lower mold and upper mold in advance, and the insert injection process (S40) ), heated regenerated rubber is supplied step by step to form a melting surface in which powder particles are not exposed on the surface of the lower mold and upper mold to form a regenerated rubber layer forming a plurality of laminated structures, and a reinforcing plate is formed on the upper side thereof. Its technical feature is to form a regenerated rubber layer constituting a plurality of laminated structures by supplying heated regenerated rubber again after it is seated.

According to the reinforcing rubber flooring combined with a reinforcing plate according to the present invention and a method for manufacturing the same, strength can be reinforced by bonding a reinforcing plate made of any one of metal, synthetic resin, and wood between the reclaimed rubber layers stacked up and down, and the reinforcing plate Through a plurality of coupling holes formed in the upper and lower regenerated rubber layers are integrally combined to manufacture a more robust flooring.

1 is a perspective view of a reclaimed rubber flooring to which a reinforcing plate according to the present invention is combined;
2 is an exploded perspective view of the reinforcing rubber flooring material combined with the reinforcing plate according to the present invention;
3 is a cross-sectional view of a reinforcing rubber flooring material to which a reinforcing plate according to the present invention is combined;
4 is a photograph of the surface of the regenerated rubber layer produced by the present invention;
5 is a cross-sectional photograph of the regenerated rubber layer produced by the present invention;
6 is a block diagram showing a method of manufacturing a reclaimed rubber flooring material according to the present invention;
7 is a perspective view showing that the nappa leather is combined on the upper and lower sides of the regenerated rubber layer of FIG. 1;
8 is a perspective view showing that nappa leather is combined on the upper and lower sides of the regenerated rubber layer of FIG. 1;
9 is a cross-sectional view showing another embodiment of the coupling hole of FIG.
10 is a cross-sectional view showing another embodiment of the coupling hole of FIG.

A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1 , the reclaimed rubber flooring to which the reinforcing plate of the present invention is coupled is formed in a square or rectangular shape having a predetermined thickness, and a reinforcing plate 10 for reinforcing strength is coupled to the center portion, and the reinforcement A regenerated rubber layer 20 is coupled to the upper and lower sides of the plate 10 .

The reinforcing plate 10 may be made of any one of metal, synthetic resin, and wood to withstand the load, and a plurality of coupling holes 11 penetrating the upper and lower sides as shown in FIGS. 2 and 3 on the surface. is formed.

The reinforcing plate 10 is integrally insert injection-molded inside the reclaimed rubber layer 20, and the reinforcing rubber layers 20 on the upper and lower sides of the reinforcing plate 10 are connected to each other through the coupling hole 11 to be firmly connected. It is coupled, and the strength and durability of the flooring material are significantly increased by the reinforcing plate 10 .

The regenerated rubber layer 20 is formed by mixing water with regenerated rubber powder obtained by pulverizing waste material having a rubber component ratio exceeding a certain amount to a certain size or less, and heating it with a microwave or high frequency. It is produced through the steaming process.

In one embodiment of the present invention, the waste material uses a waste tire for a large vehicle containing 70% or more of natural rubber, and the regenerated rubber powder has a diameter of 7 mm or less.

The regenerated rubber layer 20 forms a melting surface in which the regenerated rubber powder is melted by high heat as shown in FIG. 4 and the powder particles are not exposed on the surface, and is less than a certain level as shown in FIG. By forming a stacked structure with a plurality of layers having a thickness of

In general, regenerated rubber powder made of waste materials has an average sulfur content of about 6%, which is harmful to the human body, so a separate process for removing sulfur is required for use as a flooring material.

Conventional desulfurization methods include thermal desulfurization, hydrodesulfurization, desulfurization by solvent extraction, and desulfurization using alkali metals. However, this has to be linked with a large-capacity facility industry and has a very complicated process, so in the present invention, microwave Alternatively, sulfur is removed from the regenerated rubber powder by using high-frequency heating.

As an embodiment of the present invention, a desulfurization rate of 68.3% was shown as a result of an experiment for 2 hours at 1835W with microwave or high frequency, and a desulfurization rate of 86.4% as a result of an experiment for 1.5 hours at 1835W when hydrogen was added during the heating process. could get

Therefore, if the desulfurization time is increased or the particle size of the used sample is reduced, a higher desulfurization rate can be obtained, and an eco-friendly flooring material can be manufactured.

On the other hand, as shown in FIG. 6, the reclaimed rubber flooring material to which the reinforcing plate according to the present invention is combined is a waste material grinding process (S10), a reclaimed rubber sorting process (S20), a steam heating process (S30), and an insert injection process (S40). It is manufactured by sequentially passing through the four steps of

First, in the waste material pulverization process (S10), the waste tire comprising a rubber component of more than a certain size or waste material including waste rubber is pulverized to a predetermined size or less.

In this case, it is preferable that the waste material uses a waste tire for a large vehicle containing 70% or more of natural rubber so that the surface can melt in the steam heating process (S30), and the regenerated rubber powder has a diameter of 7 mm or less. do.

In addition, in the regenerated rubber powder sorting step (S20), foreign substances contained in the waste material are caught to sort the regenerated rubber powder.

This is because the present invention uses the pulverized waste tire and the like, so it is necessary to remove foreign substances such as wire contained in the waste tire.

Subsequently, in the steam heating process (S30), 0.5 to 2% by weight of water is mixed with 100% by weight of the regenerated rubber powder, and harmful sulfur components are desulfurized from the regenerated rubber powder while steaming the mixture with high-temperature steam.

In one embodiment of the present invention, 700Kg of regenerated rubber powder is mixed with 20L of water, and the steam heating process (S30) is steamed in a microwave or high frequency for 30 to 60 minutes in a temperature range of 250 to 330 ° C. do.

Finally, in the insert injection process (S40), the desulfurized and heated regenerated rubber is supplied to the mold to form the regenerated rubber layer 20, the reinforcing plate 10 is seated on the upper side, and then heated regenerated rubber is supplied again. The regenerated rubber layer 20 is formed to produce a flooring product.

In another embodiment of the present invention, in the insert injection process (S40), the mold is divided into a lower mold and an upper mold, and the reinforcing plate 10 is insert-injected into the regenerated rubber layer 20 in the lower mold while the upper mold is inserted. A pressurizing process (S50) of combining and pressurizing at a constant pressure may be added.

In another embodiment of the present invention, just before the insert injection process (S40), a cover bonding process (S41) of pre-adheringly installing the nappa leather 30 on the inner surfaces of the lower mold and the upper mold may be added. In addition, it is also possible to use a leather exterior material using a processing method other than the nappa leather (30).

The nappa method is the most practical processing method because the leather surface of cowhide, sheepskin, pigskin, etc. is coated and the durability of the raw hide is good and the touch is very excellent. There is this.

That is, as shown in FIGS. 7 and 8 , the nappa leather 30 surface-treated by the nappa method is closely coupled to the upper and lower sides of the regenerated rubber layer 20 to maintain a neat appearance.

Meanwhile, in the present invention, another embodiment of the coupling hole 11 is proposed so that the reinforcing plate 10 and the regenerated rubber layer 20 can be more firmly coupled.

9, the upper and lower sides of the coupling hole 11 have an inner jaw 11a to form a step in a structure in which the upper and lower layers are stacked to increase the adhesion between the regenerated rubber layer 20 and the reinforcing plate 10a. ) can be formed.

In addition, as shown in FIG. 10 , a concave-convex portion 11b may be formed on the upper surface of the inner jaw 11a to enhance adhesion.

Therefore, in the present invention, strength can be reinforced by bonding the reinforcing plates 10 and 10a made of any one of metal, synthetic resin, and wood between the reclaimed rubber layers 20 stacked up and down, and the reinforcing plates 10 and 10a. ) through the plurality of coupling holes 11 formed in the upper and lower regenerated rubber layers 20 are integrally coupled, it is possible to manufacture a more robust flooring.

10, 10a, 10b: reinforcing plate 11: coupling hole
11a: inner jaw 11b: uneven part
20: regenerated rubber layer 30: nappa leather

Claims (10)

A process of steaming waste tires for large vehicles containing 70% or more of natural rubber into high-temperature steam by mixing water with regenerated rubber powder pulverized to a size smaller than a certain size and heating it with microwave or high frequency. A regenerated rubber layer formed through; In the reclaimed rubber flooring material made of any one or more of metal, synthetic resin, and wood, a reinforcing plate provided with a plurality of coupling holes perforated up and down is integrally coupled to the inside of the reclaimed rubber layer,
The regenerated rubber layer 20 has a structure in which a plurality of layers having a thickness less than a certain thickness are stacked to strengthen the tin-like restoring force, and the regenerated rubber powder is melted by high heat, so that the powder particles are not exposed on the surface ( forming a melting surface),
The upper and lower sides of the coupling holes 11 provided in the reinforcing plates 10a and 10b have a step structure in which the upper and lower layers are stacked to increase the adhesion between the regenerated rubber layer 20 and the reinforcing plate 10a. Reinforced rubber flooring combined with a reinforcing plate, characterized in that a jaw (11a) is formed, and an uneven portion (11b) is formed on the upper side of the inner jaw (11a) to strengthen adhesion.
The method of claim 1,
Reinforced rubber flooring combined with a reinforcing plate, characterized in that the nappa leather (30) surface-treated by the nappa method is closely coupled to the upper and lower sides of the regenerated rubber layer (20).
In the method of manufacturing a recycled rubber flooring material in which the waste material grinding process (S10), the regenerated rubber powder sorting process (S20), the steam heating process (S30), the cover bonding process (S41), and the insert injection process (S40) are sequentially performed ,
In the waste material grinding process (S10), waste tires for large vehicles containing 70% or more of natural rubber components are pulverized to a certain size or less, and in the regenerated rubber powder sorting process (S20), foreign substances contained in the waste material are caught, and the diameter is small. Regenerated rubber powder consisting of 7 mm or less is selected, and in the steam heating process (S30), 100% by weight of the regenerated rubber powder is mixed with 0.5 to 2% by weight of water, and then harmful sulfur components are removed from the regenerated rubber powder by steaming the mixture with high-temperature steam. Desulfurization,
In the cover bonding process (S41), the nappa leather 30 is installed in close contact with the inner surfaces of the lower mold and the upper mold in advance,
In the insert injection process (S40), the regenerated rubber layer 20 forming a plurality of laminated structures is formed by supplying heated regenerated rubber step by step to the lower mold and the upper mold to form a melting surface where powder particles are not exposed on the surface. After the reinforcing plate 10 is seated on its upper side, heated regenerated rubber is supplied again to form a reclaimed rubber layer 20 constituting a plurality of laminated structures. Way.
4. The method of claim 3,
After the insert injection process (S40), a pressing process (S50) of insert-injecting the reinforcing plate 10 into the inner side of the regenerated rubber layer 20 in the lower mold and combining the upper mold with a constant pressure is added. A method of manufacturing a reclaimed rubber flooring material combined with a reinforcing plate.
4. The method of claim 3,
The steam heating process (S30) is a method of manufacturing a reinforcing rubber flooring combined with a reinforcing plate, characterized in that it is steamed in a microwave or high frequency for 30 to 60 minutes in a temperature range of 250 to 330 ° C. delete delete delete delete delete

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