KR101426488B1 - Multipurpose floor board for indoor and outdoor sports having shock absorb and crack prevention function and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a multipurpose floor board for indoor and outdoor sports having shock-absorbing and crack prevention functions which has a superior buffer function on a floor board on which various activities, such as sports, are performed and can minimize the generation and expansion of cracks due to use and aging. The multipurpose floor board includes: an elastic part which is arranged on the upper side of a base part and has a plurality of rubber chips compressed; a sealing part which fills pores of the upper side of the elastic part and performs a sealing function; an urethane part which is made of a semi-hard urethane formed of semi-hard polyurethane formed at the upper layer of the elastic part and a hard urethane formed of hard polyurethane; a bonding part made of a floor primer coated on the upper side of the urethane part; and an acrylic part which is made of acryl combined with the upper side of the urethane part by the coating part, wherein the acrylic part prevents micro-cracks of the surface to enhance durability of the urethane part, the elastic part first prevents surface extension of the cracks of the base part by buffering the pores and rubber chips, and the urethane part second prevents surface extension of the cracks extending from the elastic part to the upper side. Therefore, the multipurpose floor board can enhance a buffering function and durability through different materials and can be utilized in multiple purposes.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-purpose sports floor material having a shock absorbing and crack preventing function,

More particularly, the present invention relates to a floor material having a shock absorbing and crack preventing function capable of minimizing the generation and expansion of cracks due to use and aging while having excellent cushioning function in a floor material in which various activities such as exercise are performed. The present invention relates to a multi-purpose sports flooring.

In general, the elastic flooring material has a shock-absorbing characteristic when the foot is landed on the ground by controlling impact along with elastic deformation when traveling, walking or landing, thereby reducing burden to be transmitted to the body and enabling safe operation.

In a sports space in which an elastic flooring material is mainly used, the floor restraining force attenuation caused by the reaction after the foot is brought into close contact with the ground surface is lowered to improve the movement characteristics required for running and walking.

Such elastic flooring is widely used as a shock absorbing floor material for a multipurpose field such as a track, a basketball field, a volleyball field, a tennis court, a jogging track, a bicycle road, a walkway and a playground. Depending on the material of the flooring, Various types of flooring such as elastic epoxy flooring and elastic PVC (Poly Vinnyl Chloride) flooring are used.

Polyurethane (PU) chips, EPDM (ethylene propylene diene terpolymer) chips, or reclaimed rubber chips are widely used as elastic flooring materials, which are widely used in sports facilities such as athletics track, basketball court, and volleyball courts. Flooring materials having an elastic structure to be used are widely used.

The elastic flooring material having such a chip may be roughly classified into a case where a construction is performed by a method of laying a chip and a case where a construction is performed by a method in which a molding is performed after a molding is performed in a mat form having a predetermined standard.

In relation to such an elastic flooring sheet and a manufacturing method, U.S. Patent No. 4,082,888, Japanese Patent Publication No. 47-19358, and Japanese Patent Laid-Open No. 61-176760 are disclosed.

The elastic flooring material used in recent years generally has a structure in which a primary sheet is formed by pressing a rubber chip in a lower layer and a predetermined coating is formed on an upper layer to form a predetermined sheet or block as a whole, Lt; / RTI >

Such flooring is an important factor in performance and quality, as the durability associated with the preservation of the original shape and impact absorption due to the continuous impact.

However, in the conventional structure, there is a problem that a fine crack is continuously generated due to hardening and impact due to long-time use, and also the function of shock absorption is basically deteriorated so that the impact acting on the human body can not be sufficiently mitigated.

In addition, when cracks are generated on the foundation due to the nature of being disposed directly on the upper surface of a foundation such as concrete or astron, the buffering performance against the cracks is very low. As a result, cracks in the foundation are transferred to the bottom as it is. And this problem is accompanied by a problem of lowering the economical efficiency of replacing the flooring material according to the use for a predetermined period of time.

Particularly, when cracks are generated in a specific region when a predetermined region is formed into a single sheet, if the region is cut and replaced, only a visual discontinuity may cause cosmetic problems. In some cases, It also causes the problem of non-economy to be re-installed.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an impact absorbing structure capable of ensuring the performance of shock absorption in sports flooring, It is an object of the present invention to provide a multi-purpose sports floor material having a function of absorbing and cracking.

A multi-purpose sports floor material having a shock absorbing and crack preventing function according to the present invention comprises: an elastic portion disposed on an upper surface of a base portion and formed by pressing a plurality of rubber chips; a sealing portion filled in a space above the elastic portion to perform sealing; A urethane part formed of a semi-rigid urethane made of a semi-rigid urethane and a rigid urethane formed of a semi-rigid polyurethane formed on an upper layer of the elastic part, a bonding part made of an interlayer primer applied on the upper surface of the urethane part, Wherein the acrylic part prevents micro-cracks on the surface to improve the durability of the urethane part, and the elastic part has a surface extension of cracks of the base part by buffering the cavity and the rubber chip to 1 And the urethane portion prevents the elastic portion The present invention provides a multi-purpose sports floor material having a function of preventing moisture absorption and cracking, which prevents moisture from penetrating into the elastic part and prevents the surface extension of the crack extending upward from the elastic part. Accordingly, a floor material is provided which is improved in buffering and durability through the use of different materials, and can be used for various purposes.

In addition, the multi-purpose sports floor material having a shock absorbing and crack preventing function according to the present invention may further comprise a fiber reinforcing material, and the fiber reinforcing material may improve adhesion between the urethane part made of an organic material and the water-soluble acrylic. Therefore, the bonding strength between urethane and acrylic having different properties is improved, and durability is ensured. Further, the glass fiber is excellent in resistance to cracks

The multi-purpose sports floor material having the impact absorption and crack prevention function according to the present invention is characterized in that when the weight ratio of the acryl is 1, the interlayer primer having a weight ratio of 0.15 to 0.2 which provides the bonding force between the acrylic and the urethane part from the upper layer, An elastic part composed of a hard urethane of 2.5 to 3.0, a semi-hard urethane of 2.5 to 3.0 in weight ratio, a rubber chip of 7.5 to 8.5 in weight ratio and a rubber chip binder of 1.5 to 1.7 in weight ratio, It is preferable that a sealing portion composed of a sealing agent having a weight ratio of 1.1 to 1.4 is formed sequentially.

Further, a top coat of 0.05 to 0.15 mm made of an acrylic material, a non-slip treated 0.9 to 1.1 mm of acrylic, a fiber reinforcement of 0.18 to 0.22 mm and an interlayer primer of 0 to 0.15 mm, which provide a bonding force between acrylic and urethane, , A rigid urethane of 1.8 to 2.2 mm, a semi-rigid urethane of 1.8 to 2.2 mm, a rubber chip binder of 2 to 4 mm and a rubber chip binder, and an elastic part of 9 to 11 mm are sequentially arranged on the elastic part, It is preferable that the sealing portion penetrates into the void before the hard urethane is arranged and hardens.

As a method of manufacturing the sports flooring, there is a method in which a rubber chip and a rubber chip binder are hopped and pressed to form an elastic part, applying a sealing agent on the elastic part and infiltrating the gap of the rubber chip, Forming a semi-rigid urethane on the upper layer of the elastic part after the hardening, forming a hard urethane on the upper layer of the semi-rigid urethane, applying an interlayer primer on the upper surface of the rigid urethane, And bonding the top of the hard urethane to the upper surface of the acrylic urethane, and applying a top coating of an acrylic material to the upper surface of the acrylic. Therefore, reliability in manufacturing and construction is improved.

Further, it is preferable to further include the step of disposing a fiber reinforcing material made of glass fiber of mesh shape after the step of applying the interlaminar primer.

The multi-purpose sports flooring having the shock absorbing and crack-preventing function according to the present invention and the method of constructing the same can be applied to a sports floor such as an athletic track, a basketball field, a footstep or a tennis court, It is made of rubber chip and consists of elastic part with function of absorbing the stiffness and prevention of crack extension and urethane part which provides damping and buffering function while performing damping function and acrylic part which prevents micro cracks while ensuring durability It is possible to provide a multi-purpose sports flooring capable of reinforcing the respective weaknesses and ensuring maximized performance, stability and durability.

Further, by arranging the sealing portion and the interlaminar primer and the fiber reinforcing material for reinforcing the mutual bonding force between different materials, productivity can be improved, reliability at the time of construction can be provided, and the penetration of urethane into the void of the elastic portion can be prevented The reliability of the manufacturing process can be further improved.

The multi-purpose sports floor material having the shock absorbing and crack preventing function can be used for various purposes on the floor of various facilities, so that it is possible to flexibly cope with the use of individual sports facilities.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view of a multi-purpose sports floor material having a shock absorption and crack prevention function according to a first embodiment of the present invention; Fig.
2 is a view of a multi-purpose sports floor material having a shock absorbing and crack preventing function according to a second embodiment of the present invention.
3 is a flow chart showing a method of manufacturing a multi-purpose sports floor material having a shock absorption and crack prevention function according to the present invention.
4 is a flowchart showing a method of manufacturing a multi-purpose sports flooring having shock absorbing and crack preventing functions according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown.

In the following description, when a part is referred to as being connected to another part, it includes not only a direct connection but also a case where the other part or device is electrically connected to the other part. Also, when an element is referred to as including an element, it is to be understood that the element may include other elements, without departing from the spirit or scope of the present invention.

1 is a view showing a multi-purpose sports floor material having a shock absorbing and crack preventing function according to an embodiment of the present invention.

The multi-purpose sports floor material having a shock absorbing and crack preventing function according to the present invention basically comprises an elastic part 500 disposed on the upper surface of the base part 10 and formed by pressing a plurality of rubber chips, A sealing part 400 which is filled in the upper space of the urethane part 300 to perform sealing; a urethane part 300 coupled to the upper surface of the elastic part 500; And an acrylic part 100 composed of an acrylic part 120 coupled to the upper side of the urethane part 300 by the adhesive part 200. The acrylic part 100 is made of a synthetic resin.

The elastic part 500 may be formed in such a manner that a plurality of rubber chips are pressed or laid, and the material of the rubber chip may be selectively formed. For example, the EPDM chip, the polyurethane chip, or the reclaimed rubber chip can be used as the rubber chip. EPDM (Ethylene Prophlene Diene Monomer) chip, which is widely used in recent years, is made of ethylene, propylene, Means a synthetic rubber composed of a non-conjugated diene, and is excellent in ozone resistance, cold resistance, heat resistance, and resistance to content, and has good safety, so that various colors and patterns can be realized. It also has an economic advantage over the polyurethane materials described below.

The polyurethane constituting the polyurethane chip is formed by bonding molecules with alcohol and isocyanate forming a reaction heat by a polymerization reaction. As described later, the urethane part formed on the upper side of the elastic part 500 It is possible to improve the bonding strength with the adhesive layer 300 and the adhesive strength and the abrasion resistance in terms of the material properties. Particularly, since it has excellent weather resistance and chemical resistance, even when exposed to ultraviolet rays or acid rain, There is little advantage.

In addition, in the case of a recycled rubber chip, it is produced by utilizing the waste resources recovered from waste tires and the like, and since it is basically black, various surfaces such as a polyurethane resin and a coating agent can be formed on the surface after chip molding, It can be used in facilities.

In the case of the present invention, the rubber chips or the rubber chips mixed with the rubber chip binders are pressed or heated to each other to form a predetermined sheet. Basically, the elastic part 500 is formed of other members Or may be formed in such a manner that a predetermined block or sheet is formed together with the base portion 10 so as to be jointly applied or a field construction is sequentially performed upward with respect to the base portion 10. [

The urethane part 300 disposed on the upper surface of the elastic part 500 may be composed of two layers of the lower semi-hard urethane 320 and the upper hard urethane 310. However, It should be noted that when the substrate 300 is composed of two layers having different properties, the advantages of absorbing shock and bonding and preservability are complementary to each other.

Specifically, the polyurethane constituting the urethane part 300 is a material in which a polyol and an isocyanate are chemically reacted with each other to produce a material having a different physical property such as a polyurethane. The properties are determined by the contents of polyol and isocyanate, and the strong reactivity of polyol and isocyanate enables control of the curing time during construction or production, thereby enabling control of workability, curability, and airtightness.

The polyurethane used in the production of the urethane part 300 may include a polyol, a catalyst, a flame retardant, and other additives, and the hard urethane 310 may be blended in the order of a high hardness urethane base, Thereafter, the viscosity of the thinner may be adjusted by controlling the viscosity of the thinner to adjust the viscosity, and the mixture may be stirred through the stirrer. The hard urethane 310 can perform the function of preventing reinforcement and moisture permeation of the lower layer from the upper side of the semi-hard urethane 320. However, the hard urethane 310 may be applied by a general method such as a high-pressure spray or a roller, .

The hard urethane 310 is manufactured in the above-described manner according to a predetermined mixing ratio, and the semi-hard urethane 320 formed in the lower layer functions to reinforce the soft elastic part 500 in the lower layer, 310). ≪ / RTI > The density of the semi-hard urethane 320 may be varied according to the selection, but it is preferably 500 to 1000 kg / m ³ in consideration of the arrangement in a sports facility.

The urethane part 300 may be formed by spraying or rolling the elastic part 500 directly on the upper side of the elastic part 500. In the process of applying the urethane part 300 in a liquid form, So that not only the distinction between the layers is disturbed but also the elastic force is deteriorated.

Therefore, the sealing part 400 may be formed between the urethane part 300 and the elastic part 500. More precisely, the sealing part 400 is coated on the upper part when the elastic part 500 is formed And some or all of them may be included in the voids on the upper side of the elastic part 500. [

The sealing portion 400 may be made of polyurethane, and the curing process may be performed before the urethane portion 300 is formed, as described later.

In the concept of the present invention, the urethane part 300 mainly functions as a reinforcement while the lower elastic part 500 functions as a shock absorbing part. When the urethane part 300 is formed by the sealing part 400 There is an advantage that the gap between the rubber chips can be further increased since the penetration into the gap is prevented. Accordingly, the elastic part 500 can absorb the impact more actively. The cracks of the base part 10 can be absorbed by the rubber chips included in the elastic part 500 and the voids therebetween, Effectively buffering and preventing transmission to the upper layer.

Regarding the buffering of the cracks, the elastic part 500 firstly cushions the extension of cracks in the base part, and the semi-hard urethane 320 in the upper part of the elastic part 500 can buffer the cracks secondarily.

The hard urethane 310 can function mainly to prevent moisture permeation. The urethane part 300 is also excellent in elasticity due to the nature of the material, so that the elasticity of the floor can be expected to be improved.

The acrylic part 100 may be formed as an upper layer of the urethane part 300. As the acrylic part forming the acrylic part 100, various known acrylic coatings or sheets may be used. For example, an acrylic polymer acrylic polymer in an amount of 30 to 60% by weight, ethylene glycol in an amount of 1 to 5% by weight, calcium carbonate in an amount of 30 to 60% by weight and water in an amount of 10 to 30% by weight, no.

Such acryl has a characteristic of being resistant to corrosion and aging, so that it has an advantage that the durability is improved as compared with the case where the urethane part 300 is exposed upward as in the prior art.

Since the acrylic part 100 is basically formed on the uppermost layer, the non-slipping treatment can be performed in consideration of its application as a sports flooring. Various known means can be used in connection with formation of a structure for enhancing frictional force or addition of other components have.

The acrylic part 100 may include an acryl 120 forming an upper layer of the urethane part 300 and a top coating 110 applied to the surface of the acrylic 120 to be finally finished. The top coat 110 is preferably made of acrylic in consideration of adhesiveness and durability.

However, due to the difference in characteristics of the urethane part 300 made of organic urethane and the water-soluble acrylic material 120, there is a fear that they have a weak bonding force with each other.

The interlaminar primer 210 may be disposed between the urethane part 300 and the acrylic part 100 to provide an adhesive force between the urethane part 300 and the acrylic part 100. The interlaminar primer 210 may provide a bonding force between different materials It is preferable that the material is made of a material that conforms to a condition in which the impact continues in a material having different shrinkage and expansion rates. For example, the interlaminar primer 210 may include an epoxy resin, and may include an epoxy-modified polyol resin, a pigment, an additive, a solvent (aromatic system, ester system, ketone system) a curing agent of an amine-modified resin, and the like may be applied. However, the interlayer primer 210 is not limited thereto.

A fiber reinforcing material 220 is further disposed between the acrylic 120 and the hard urethane 310 to further enhance the bonding force between the acrylic 120 and the urethane part 300 of the acrylic part 100 .

The fiber reinforcement 220 forms an adhesive portion together with the interlaminar primer 210 and may contribute to the performance of reinforcing the acrylic 120 while enhancing the bonding strength to different constructions of acrylic and urethane . It is preferable that the fiber reinforcing member 220 is made of glass fiber of mesh type.

Specifically, after the placement and / or curing of the urethane part 300, more specifically the hard urethane 310, is completed, a fiber reinforcing material 220 is disposed on the upper layer of the urethane part 300, and then the interlayer primer 210 is horizontally and / But it is not always limited to this.

The multi-purpose sports flooring having the shock absorption and crack prevention function according to the present invention will be described in more detail.

As shown in FIG. 1, in one embodiment of the present invention, a primer portion 510 is applied on the upper side of the base portion 10, and a predetermined sports flooring sheet may be disposed on the primer portion 510. An urethane part 300 forming an upper layer of the elastic part 500 and an acrylic part 100 disposed on an upper layer of the urethane part 300. [ And an adhesive part 200 interposed between the urethane part 300 and the acrylic part 100 to provide an adhesive force.

In one embodiment of the present invention, for example, when the weight ratio of the acrylic resin 120 is 1, the top coat 110 composed of an acrylic material and having a weight ratio of 0.2 to 0.3, the non-slip acrylic resin 120 having a weight ratio of 1, , An interlayer primer 210 having a weight ratio of 0.15 to 0.2, a hard urethane 310 having a weight ratio of 2.5 to 3.0, a semi-hard urethane 320 having a weight ratio of 2.5 to 3.0 providing a bonding force between acrylic and urethane, And a sealing part 400 made of a sealing agent having a weight ratio of 1.1 to 1.4 for preventing penetration of urethane applied on the upper side of the elastic part 500 .

According to this composition, when the thickness ratio of the acryl 120 is 1, the top coat 110 made of an acrylic material and having a thickness ratio of 0.05-0.15, the acrylic 120 having a non-slip treated thickness 1, A hard urethane 310 having a thickness ratio of 1.8 to 2.2, a semi-hard urethane 320 having a thickness ratio of 1.8 to 2.2, a rubber chip having a thickness ratio of 9 to 11, and a rubber chip binder And an elastic part 500 made of a mixture of the above components. Here, it should be noted that the sealing part 400 is not provided separately because it is permeable to a part of the rubber chip.

In the case of the present invention, it is preferable that the elastic part 500 facing the base part 10 is coupled to the base part 10 via the primer part 510. When the predetermined bottom material sheet is attached to the primer part 510 ), The primer part 510 may have a thickness ratio of 0.18 to 0.22 and 0.09 to 0.11 in weight ratio.

For example, the topcoat 110 is 0.1 mm, the acrylic 120 is 1 mm, the interlayer primer 210 is the same as the thickness of the interlayer primer 210, Rigid urethane 320 of 2 mm and elastic portion 500 of 10 mm, the thickness of the hard and semi-rigid urethane is 1: 1 And the thickness ratio of the elastic part 500 to the hard urethane is 1: 5. In this case, the performance of the elastic part 500 by the rubber chip is maximally ensured in the performance of buffering the entire impact and prevention of the expansion of the cracks, while ensuring uniform reinforcement by the urethane part 300, Performance can be provided evenly. In addition, since the acryl 120 is formed with a thickness ratio of urethane to urethane, its thickness can be minimized while providing performance as a surface treatment.

Specifically, as an example for the production of a uniform product, a description will be given of the arrangement state and the thickness. From the upper layer, a top coating 110 of 0.05 to 0.15 mm made of an acrylic material, a non-slip treated 0.9 to 1.1 mm of an acrylic 120, A fiber reinforcing material 220 of 0.18 to 0.22 mm and an interlayer primer 210 of 0 to 0.15 mm, a hard urethane 310 of 1.8 to 2.2 mm, a semi-rigid material of 1.8 to 2.2 mm, A urethane 320 and a 9 to 11 mm elastic part 500 composed of a mixture of a rubber chip and a rubber chip binder of 2 to 4 mm are sequentially arranged on the upper surface of the elastic part 500. The semi- The thickness of the sealing part 400 is not provided separately because the sealing part 400 penetrates into the void before curing.

The rubber chips constituting the elastic part 500 according to the above ratio are formed in a range of 2 to 4 mm in order to prevent the extension of the buffer, crack, and durability.

FIG. 2 illustrates a multi-purpose sports floor material having a shock absorbing and crack preventing function according to a second embodiment of the present invention. In the preferred embodiment, when the thickness ratio of the acryl 120 is 1, A top coat 110 made of an acrylic material and having a thickness ratio of 0.05 to 0.15, an acrylic 120 having a non-slip treated thickness 1, a fiber reinforcement 220 having a thickness ratio of 0.18 to 0.22 to provide a bonding force between acrylic and urethane, An elastic part 500 composed of a mixture of a rubber chip and a rubber chip having a thickness ratio of 9 to 11 and a rubber chip binder having a thickness ratio of 1.8 to 2.2, an interlaminar primer 210 having a thickness ratio of 1.8 to 2.2, a hard urethane 310 having a thickness ratio of 1.8 to 2.2, . ≪ / RTI > The thickness ratio of the interlaminar primer 210 and the fiber reinforcing material 220 may be different depending on the case, although the sealing part 400 is not applied to the thickness of the rubber chip. In some cases, the interlaminar primer 210 may be formed by wholly or partly penetrating between the meshes of the fiber reinforcing material 220, and the fiber reinforcing material 220 may be disposed after the interlaminar primer 210 is completely cured have. In this case, the thickness of the interlayer primer 210 may be made smaller than in the above embodiment.

In addition, when the weight ratio of the acrylic 120 is 1, the top coating 110 made of acrylic material and having a weight ratio of 0.2-0.3, A bonding portion 200 made of acrylic 120 having a weight ratio of 1, a fiber reinforcement 220 having a weight ratio of 0.9 to 1.1 and an interlayer primer 210 having a weight ratio of 0.15 to 0.2 to provide a bonding force between acrylic and urethane, An elastic part 500 made of a hard urethane 310 having a weight ratio of 3.0 to 3.0, a semi-hard urethane 320 having a weight ratio of 2.5 to 3.0, a rubber chip having a weight ratio of 7.5 to 8.5 and a rubber chip binder having a weight ratio of 1.5 to 1.7, And a sealing part 400 made of a sealing agent having a weight ratio of 1.1 to 1.4 for preventing permeation of urethane applied on the upper side of the sealing part 400.

In the present invention, it is preferable that the elastic part 500 facing the base part 10 is coupled to the base part 10 via the primer part 510. When a predetermined bottom material sheet is attached to the primer part 510 ), The primer part 510 may have a thickness ratio of 0.18 to 0.22 and 0.09 to 0.11 in weight ratio.

The optimized weight and thickness according to other embodiments of the present invention described above can be summarized as follows.

First Embodiment Second Embodiment Name of material Content / kg Thickness / mm Content / kg Thickness / mm Acrylic top coating 0.25 0.1 0.2 0.1 Acrylic (no slip) One One One One Fiber reinforcement None None One 0.2 Interlayer primer 0.17 0.1 0.2 0.1 Hard urethane 2.6 2 2.6 2 Semi-hard urethane 2.6 2 2.6 2 Sealing agent 1.3 None 1.3 None Rubber chip 8 10 8 10 Rubber chip binder 1.6 none 1.6 none primer 0.2 0.1 0.2 0.1

By virtue of such a weight ratio and thickness ratio, the durability, the elastic supporting force, and the efficiency of the workability can be maximized.

3 is a flowchart illustrating a method of manufacturing a multi-purpose sports floor material having a shock absorbing and crack preventing function according to the present invention.

The manufacturing method of the sports flooring according to the present invention is a method of manufacturing or installing the above-described sports flooring material. The method includes a forming step S100 of the elastic part 500 and a step of applying a sealing agent on the elastic part 500, A step S300 of forming a semi-rigid urethane 320 on the upper layer of the elastic part 500, a step S400 of forming a hard urethane 310 on an upper layer of the semi-rigid urethane 320, A step of applying an interlayer primer 210 on the upper surface of the hard urethane 310, a step of forming a non-slip acrylic 120 on an upper layer through the interlayer primer 210, and a step of bonding on the upper side of the hard urethane 310 (S600), and applying an acrylic top coating 110 to the upper surface of the acryl 120 (S700).

The forming step of the elastic part 500 may be classified into a process of directly laying in the field in the case of the case, or a process of pressing and forming the heat while heating in the manufacturing process.

The rubber chips may be selected from polyurethane chips, EPDM chips, and reclaimed rubber chips, as described above.

The process of installing the rubber chip in a manner of installing the rubber chip will be described. Basically, the surface is cleaned and organized with respect to the base portion 10, and the basic drying process is performed first. Thereafter, a weak reinforcement for thinly coating the weak portion of the base portion 10 made of concrete or ASCON (asphalt concrete) with epoxy may be further performed.

The primer portion 510 is applied to the base portion 10 as described above so that the surface of the base portion 10 can be uniformly formed.

Here, the application of the elastic part 500 may be continued after the primer part 510 is applied and hardened. In the above-described step, the rubber chip and the binder are directly mixed at the construction site, and the material stirred is laid out using a finisher (rubber paver) or a hand tool within a predetermined time. When the binder is cured after a long time after the mixing, It is preferable that the curing time is taken into account and the curing is immediately carried out when the curing is completed.

The roller is repeatedly moved on the surface of the elastic part 500 to repeatedly compress the surface so as to form a flat surface while applying a constant pressure. In some cases, pressure may be applied to the portion not sufficiently pressurized by the roller by using the hot iron.

After completion of the installation of the elastic part 500, the sealing part 400 can be applied after curing through curing for a predetermined period of time.

In order to prevent undesirable penetration of the urethane formed in the upper layer by sealing the sealing material into the void generated in the curing process of the elastic part 500 in the sealing agent application and infiltration step (S200) described above to be. In addition, the sealing part 400 may prevent a crack by filling a predetermined gap.

After the sealing material is cured, the urethane part 300 may be formed. As described above, the semi-rigid urethane 320 may be disposed on the sealing part 400, and the hard urethane 310 may be disposed on the upper part thereof have.

The formation of the semi-hard urethane 320 (320) and the formation of the hard urethane 310 (400) may be performed by applying the liquid urethane, and the formation of the semi-hard urethane 320 and the hard urethane 310 It may take a predetermined curing time for curing.

The semi-rigid urethane 320 basically performs reinforcement of the elastic part 500 and functions as a buffer.

When the urethane part 300 is formed as described above, the interlaminar primer 210 is applied to improve the bonding force with the acrylic part 100 formed on the upper layer.

The acryl 120 forming the acrylic part 100 may be formed to have a thickness of, for example, about 1 mm. As described above, the impact of the urethane part 300 can be improved by improving the durability of the urethane part 300 The non-slipping process can be performed to improve safety and provide mobility.

After the formation of the non-slip acrylic (S600), a top coating 110 may be formed, and the top coating is preferably formed of an acrylic material in consideration of the arrangement of the lower layer of the acryl 120.

Marking of the lines may optionally be made in the upper layer of the topcoat 110.

However, the portion from the elastic part 500 to the top coating 110 is previously manufactured and transported in a predetermined size in a predetermined manufacturing process, and the sheet is directly disposed at the site where the base part 10 is disposed In this case, the forming of the elastic part 500 may be performed in a device such as a predetermined pressure roll.

4 is a flowchart showing a method of manufacturing a multi-purpose sports flooring having shock absorbing and crack preventing functions according to a further concept of the present invention.

A description overlapping with FIG. 3 will be omitted below.

As described above, when the elastic part 500 is formed through the compression molding (S110) of the rubber chip, preliminary work for forming the urethane part 300 is performed through the sealing agent application and infiltration (S200).

Here, the sealing part 400 is limited to the upper side rather than the entire void part of the rubber chip constituting the elastic part 500, so that the sealing part 400 can be infiltrated.

The urethane part 300 is formed on the upper side of the sealing part 500 and the interlaminar primer 210 is applied on the upper side of the urethane part 300 to form a fiber reinforcing material 220 may be performed (S510). Here, the fiber reinforcement 220 may be bonded before the interlaminar primer 210 is cured.

The acrylic part 100 is formed on the fiber reinforcing material 220 and bonded to the urethane part 300 by the bonding part 200 composed of the interlaminar primer 210 and the fiber reinforcing material 220.

The urethane part 300 may include a rigid urethane 310 and a semi-rigid urethane 320 from the upper side and the acrylic part 100 may include a top coating 110 formed of an acrylic material and an acrylic material. .

According to the above-described concept, the multi-purpose sports flooring having the shock absorbing and crack preventing function and the construction method thereof can be applied to a sports floor such as an athletic track, a basketball field, a foot ball or a tennis court, It is made of a rubber chip which is made of rubber chip. It has an elastic part having a function of absorbing deformation and cracks, a urethane part providing damping and buffering function while performing damping function, and an acrylic part It is possible to provide a multi-purpose sports flooring capable of reinforcing the respective weaknesses and ensuring maximized performance, stability and durability.

In addition, by arranging the sealing portion and the interlaminar primer and the fiber reinforcing material for strengthening mutual bonding force in different materials, productivity can be improved and reliability at the time of construction can be provided. Here, the reliability of the manufacturing is further improved by the sealing portion which can prevent the penetration of the urethane into the space of the elastic portion.

The scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the content of the following claims.

10 base part 100 acrylic part
110 ... Topcoat 120 ... Acrylic
200 ... Adhesive 210 ... Interlayer primer
220 ... fiber reinforcing material 300 ... urethane part
310 ... Hard Urethane 320 ... Soft Urethane
400: sealing part 500: elastic part
510 ... primer

Claims (6)

An elastic part disposed on an upper surface of the base part and formed by pressing a plurality of rubber chips;
A sealing part filled in the gap on the upper side of the elastic part to perform sealing;
A urethane part made of a semi-rigid urethane made of a semi-rigid polyurethane and a rigid urethane made of a rigid polyurethane formed on the upper layer of the elastic part;
An adhesive portion comprising an interlaminar primer applied to an upper surface of the urethane portion; And
And an acrylic part made of acrylic and bonded to the upper side of the urethane part by the adhesive part,
Wherein the adhesive portion comprises a fiber reinforcing material for improving the adhesion between the urethane portion made of an organic material and the water-soluble acrylic,
The acrylic part prevents micro-cracks on the surface, thereby improving the durability of the urethane part,
The elastic portion primarily prevents surface extension of cracks in the base portion by buffering voids and rubber chips, the urethane portion prevents moisture permeation to the elastic portion, and the surface extension of the crack extending upward from the elastic portion is a secondary To prevent shock absorption and cracking.
delete The method according to claim 1,
An interlaminar primer having a weight ratio of 0.15 to 0.2, a hard urethane having a weight ratio of 2.5 to 3.0, a semi-hard urethane having a weight ratio of 2.5 to 3.0, a weight ratio of 7.5 And a sealing part made of a sealing agent having a weight ratio of 1.1 to 1.4 for preventing penetration of the urethane coated on the upper side of the elastic part are formed in order Multi-purpose sports flooring with shock absorption and crack prevention function.
The method according to claim 1,
A top coat of 0.05 to 0.15 mm made of acrylic material, a non-slip treated 0.9 to 1.1 mm of acrylic, a fiber reinforcement of 0.18 to 0.22 mm and an interlayer primer of 0 to 0.15 mm to provide a bonding force between acrylic and urethane, 9 to 11 mm elastic parts made of a mixture of a hard urethane of 2.2 mm, a semi-hard urethane of 1.8 to 2.2 mm, a rubber chip of 2 to 4 mm and a rubber chip binder are successively arranged,
Characterized in that an upper portion of the elastic portion penetrates the sealing portion before the placement of the semi-rigid urethane and cures.
A method of manufacturing a sport flooring material according to any one of claims 1 to 3,
The rubber chip and the rubber chip binder are mixed and pressed to form an elastic part;
Applying a sealing agent from above the elastic part and penetrating the void of the rubber chip;
Forming a semi-rigid urethane on the upper portion of the elastic portion after the sealing agent is cured;
Forming a hard urethane on the upper layer of the semi-hard urethane;
Applying an interlayer primer to the upper surface of the hard urethane;
Forming non-slip acrylic on the upper layer through the interlaminar primer and bonding on the upper side of the hard urethane; And
And applying a top coating of an acrylic material to the top surface of the acrylic. ≪ RTI ID = 0.0 > 11. < / RTI >
6. The method of claim 5,
After the step of applying the interlaminar primer,
A method for manufacturing a multi-purpose sports floor material having impact absorption and crack prevention function, the method comprising: disposing a fiber reinforcing material composed of mesh-shaped glass fibers.

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