JP3190263B2 - Elastic pavement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic pavement material used for paving a walking path, a running path, a passageway, etc. in various sports facilities such as a golf course, an athletic stadium, a pool and the like, a park, a school, a building and the like. .

[0002]

2. Description of the Related Art Conventionally, as an elastic paving material used for paving a walking path of a golf course or the like, a material obtained by molding fibrous rubber made from waste rubber such as vehicle tires and conveyor belts using a binder has been used. ing. In this case, since the fibrous rubber is black, when a color elastic pavement material is obtained, toner (color powder) is added to the fibrous rubber together with a binder.
And coloring is performed.

FIG. 2 schematically shows the above-mentioned elastic pavement material. In the figure, reference numeral 22 denotes fibrous rubber, and reference numeral 24 denotes a binder bonding the fibrous rubber. The fibrous rubber 22 is
Most are arranged horizontally or almost horizontally, but their orientation is random. Also, the binder 24
Since the amount is such that it adheres to the surface of the fibrous rubber 22, many voids 26 are formed inside the elastic pavement material, and therefore, this elastic pavement material has excellent water permeability.

[0004]

The elastic pavement material shown in FIG. 2 has a problem that it has low hardness and insufficient durability because it is made of only fibrous rubber. In addition, since black fibrous rubber is bonded or colored by adding toner to it, there is a drawback that it is monochromatic and has poor color feeling.

The present invention has been made in view of the above circumstances, and provides an elastic pavement material having necessary hardness, sufficient durability, and capable of imparting various colors. With the goal.

[0006]

The present invention provides the following elastic pavement (1) to (6) in order to achieve the above object. (1) The length is 3 to 30 mm and the thickness is 0.3 to 3 mm
90 to 50% by weight of a fibrous rubber having a particle size of 3 to 50
Gol whose average hardness (JIS A hardness) is 90 degrees or more
A mixture with 10 to 50% by weight of crushed fubol is used as a synthetic tree.
Liquid curable baths such as oil-based, natural rubber-based, and synthetic rubber-based
Elastic paves characterized by being formed using an indah
Equipment. (2) A colored layer is formed on the surface as a crushed golf ball
(1) The elastic pavement material used. (3) The colored layer is an ultrafine particle as an ultraviolet absorbing filler
Titanium oxide, ultrafine zinc oxide, ultrafine iron oxide, ultrafine
Particle cerium oxide, silica-cerium oxide coated pigment and
(2) containing at least one selected from carbon powder
Elastic pavement. (4) As a fibrous rubber, color coating agent on the surface
(1) The elastic pavement material according to (1) to (3), wherein the material is coated with an elastic pavement. (5) Different from fibrous rubber as crushed golf ball
Elastic pavement of (1) to (4) using color
Wood. (6) Various colors as crushed golf balls
(1) to (5) elastic pavement using particles
Wood.

The fibrous rubber used in the present invention is long and flexible, and the crushed golf ball is small and hard (described later). Therefore, in the elastic pavement material of the present invention , as shown in FIG. 1, the long and soft fibrous rubber 2 is bonded to the binder 6 via one or a plurality of small and hard ground golf balls 4.
A part to be joined is produced. Therefore, the connection between the fibrous rubbers 2 is improved by the action of the crushed golf ball 4 interposed between the fibrous rubbers 2 and the fibrous rubber 2
Since they are firmly connected to each other, the hardness can be increased and the durability can be improved as compared with an elastic pavement material composed of only fibrous rubber as shown in FIG. And the book
In the present invention , the characteristics of the elastic pavement material can be appropriately adjusted according to the intended use by adjusting the mixing ratio of the pulverized golf ball in the mixture. In addition, the elastic pavement material of FIG. 1 has good water permeability because a number of voids 8 are formed inside.

In the present invention , various colors can be imparted to the elastic pavement material by selecting the colors of the fibrous rubber and the ground golf ball. For example, when the fibrous rubber and the crushed golf ball are different in color from each other, a crushed golf ball having a different color from the fibrous rubber is present in the fibrous rubber. A rich colorful elastic pavement material can be obtained.
In addition, in the case of using a golf ball crushed material composed of particles having various colors, the golf ball crushed material having various colors is present in the fibrous rubber. A colorful elastic pavement can be obtained.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION As the fibrous rubber in the present invention , any kind of rubber made into a fibrous form can be used. Examples of the fibrous rubber include black fibrous rubber (black hiji rubber) made from waste rubber such as vehicle tires and conveyor belts, and fibrous rubber in which the surface of the above black hiji rubber is coated with a color coating agent. (Color hijiki rubber) and fibrous rubber produced from color rubber, but are not limited thereto. The cross-sectional shape of the fibrous rubber is not limited, but usually a cross-section having a substantially circular cross section is used.

When the above-mentioned colored hijiki rubber is used as the fibrous rubber in the present invention , a colorful elastic pavement material having extremely excellent color feeling can be obtained in combination with a ground golf ball. It should be noted that the color hijiki rubber may be used in combination with the black hijiki rubber. Also,
It may be used in combination with a fibrous rubber of another color.

In the present invention , the fibrous rubber has a length (fiber length) of 3 to 30 mm, preferably 3 to 10 m.
m, thickness (fiber diameter) is 0.3 to 3 mm, preferably 0.1 to 3 mm.
Use the one of 5 to 2 mm. In this case, the fibrous rubber whose length and thickness are in the above ranges may be contained at 30 to 50% by weight of the total fibrous rubber. When the length of the fibrous rubber is smaller than 3 mm, the strength, flexibility and water permeability of the elastic pavement material are deteriorated, and when it is larger than 30 mm, the appearance and moldability of the elastic pavement material are deteriorated. In addition, thickness is 0.3mm
If it is smaller, the strength and water permeability of the elastic pavement material deteriorate,
If it is larger than mm, the appearance and formability of the elastic pavement material will be poor.

The crushed golf ball of the present invention may be a crushed golf ball, such as a wound ball, a two-piece ball, or a one-piece ball, which is crushed by a crusher. Therefore, the above-mentioned crushed golf ball includes a rubber solid center of a wound ball, a crushed material of thread rubber and a synthetic resin cover, a crushed material of a two-piece ball rubber core ball and a synthetic resin cover, and a crushed material of a one-piece ball. Granular synthetic resin and granular rubber.

In this case, the two-piece ball core ball, the one-piece ball, the wound ball cover, and the two-piece ball cover usually have a JIS A hardness of 90 degrees or more. Therefore, the pulverized golf ball used in the present invention has an average hardness (JIS A hardness) of 90 degrees or more, and the average hardness (JIS A hardness) of general rubber granules.
Is about 65 or less, but very hard.

The pulverized golf ball used in the present invention usually has various angular shapes, not spherical or rounded shapes. Further, when a thread-wound golf ball is pulverized by a pulverizer, a part of the thread rubber is pulverized in a slightly long state. However, the pulverized golf ball used in the present invention contains such a pulverized thread rubber. May be.

The solid center, thread rubber and cover of a wound ball, core ball and cover of a two-piece ball, and one-piece ball are usually colored in various colors. Therefore, the crushed golf ball in the crushed state is usually constituted by particles having various colors. Therefore, in the present invention, if the crushed golf ball is used as described above, it is possible to obtain a colorful elastic pavement material having various colors including crushed golf balls of various colors.

Further, as a crushed golf ball, a golf ball having a colored layer formed on its surface in advance can be used. That is, the binder used in the present invention may contain a component that turns yellow when irradiated with sunlight after the elastic pavement material is applied. The possibility of yellowing is, for example, a urethane component contained in the binder. And if such a component turns yellow, the elastic pavement material may change color. In particular, since many crushed golf balls have a whitish color, when the components in the binder attached to the crushed golf balls turn yellow,
Yellowing is very noticeable. On the other hand, if the surface of the ground golf ball is colored in advance, even if the component in the binder attached to the ground golf ball turns yellow,
This yellowing can be made inconspicuous, and discoloration of the elastic pavement material can be suppressed.

The coloring means of the ground golf ball is not limited, and any coloring method can be used. In particular, the coloring method described in JP-B-7-119284 can be suitably used. By using the coloring method,
Discoloration of the elastic pavement material due to yellowing of components in the binder can be favorably suppressed. The coloring method described in the official gazette includes natural rubber / polymethyl methacrylate graft copolymer, polychloroprene rubber, ethylene / vinyl acetate copolymer, vinyl chloride / acrylic copolymer, acrylic resin and urethane resin. Binders selected from solutions, latexes and emulsions containing at least one kind, pigments, and other additives (eg, emulsifiers)
Is used to perform coloring. When a colored coating film is formed on the surface of a crushed golf ball by this method, usually 3 to 12 parts by weight of a binder is used with respect to 100 parts by weight of the crushed golf ball, and the crushed golf ball, binder, pigment and other components are used. The additives are mixed with stirring and dried while stirring with a warming drier.

When coloring the ground golf ball by the coloring method described in JP-B-7-119284, it is more preferable to add an ultraviolet absorbing filler as an additive, whereby the yellowing of the components in the binder is improved. It is possible to effectively suppress the discoloration of the elastic pavement material caused by the above. In this case, the type of the ultraviolet absorbing filler is not limited, but is at least one selected from ultrafine titanium oxide, ultrafine zinc oxide, ultrafine iron oxide, ultrafine cerium oxide, silica-cerium oxide coated pigment, and carbon powder. Can be suitably used, and particularly, ultrafine titanium oxide (white pigment) and ultrafine iron oxide (colored pigment) are preferable in view of mixing property and durability.

When the ground golf ball is colored in advance,
It is preferable to color as dark as possible, whereby the discoloration of the elastic pavement material due to the yellowing of the components in the binder can be more effectively suppressed. In particular,
The lightness index L according to Hunter's color difference formula is 60 to 0, especially 4
It is preferable to color so as to be 0 to 0.

In the present invention , the pulverized golf ball may be colored in advance, and the colored pulverized golf ball may be mixed with fibrous rubber. Alternatively, the pulverized golf ball may be mixed with fibrous rubber. Thereafter, the ground golf ball may be colored together with the fibrous rubber. In addition, the colored golf ball crushed material used in the present invention may be entirely colored one color or a mixture of different colored golf ball crushed materials.

In the present invention , the crushed golf ball used has a particle size of 3 to 50 mesh, preferably 5 to 30 mesh. If the particle size of the crushed golf ball is larger than 3 mesh, the adhesiveness of the crushed golf ball in the elastic pavement material is deteriorated, and the appearance of the elastic pavement material is deteriorated. On the other hand, if it is smaller than 50 mesh, the strength and color (colorfulness) of the elastic pavement material deteriorate.

In the present invention , a mixture of the fibrous rubber and the crushed golf ball is formed using a binder. In this case, the ratio of the fibrous rubber in the mixture is 90%.
-50% by weight, preferably 80-70% by weight, and the proportion of the crushed golf ball is 10-50% by weight, preferably 20-30% by weight. If the ratio of the crushed golf ball is less than 10% by weight, the advantage of adding the crushed golf ball cannot be sufficiently utilized, and the color effect (colorful effect) becomes insufficient. If it is more than 50% by weight, the elastic pavement material becomes too hard, and the color effect (colorful effect) becomes insufficient.

In the present invention , the kind of the binder is not limited, and any binder can be used as long as it is a liquid curable binder such as a synthetic resin, a natural rubber or a synthetic rubber. When the resin is molded into a mat shape, a block shape, or the like at a factory, a moisture-curable liquid urethane-based binder (for example, Takenate F-1 manufactured by Takeda Pharmaceutical Co., Ltd.)
81P) is advantageous in terms of manufacturability,
When an elastic pavement material is constructed and formed on site, it is advantageous to use a moisture-curable urethane binder (for example, Takenate F-139 or F-151 manufactured by Takeda Pharmaceutical Co., Ltd.) in terms of ease of construction. Further, in order to suppress the discoloration of the elastic pavement due to the yellowing of the components in the binder and the deterioration of the elastic pavement due to ultraviolet rays, the above-mentioned UV-absorbing filler, benzotriazole-based, salicylate-based, benzophenone is added to the binder. And an organic ultraviolet absorber such as cyanoacrylate.

[0024] The amount of binder to a mixture of fibrous rubber and the golf ball pulverized material in the present invention, compared mixture 1 00 parts by weight of fibrous rubber and the golf ball pulverized product, 10 to 50 parts by weight, particularly It is preferably 15 to 35 parts by weight. Further, the amount of the binder is particularly preferably 30 to 35 parts by weight when the elastic pavement material is constructed and formed on site, and 15 to 20 parts by weight when the elastic pavement material is molded with a molding die. If the amount of the binder is less than 10 parts by weight, the strength of the elastic pavement material is reduced, and the elastic pavement material becomes brittle and may have reduced durability. If the amount is more than 50 parts by weight, the elastic pavement material becomes too hard. There is.

The method for producing the elastic pavement material of the present invention is not particularly limited. For example, after a binder is added to a mixture of a fibrous rubber and a crushed golf ball, the mixture is stirred to obtain a molding material. The molding material can be obtained by placing the molding material in a mold, molding it into a predetermined shape by hot press molding, room temperature press molding, or the like, and then drying and curing it. Also,
Laying the molding material on the construction site, rolling this with a hot roller,
It can also be obtained by molding with a hot iron or the like, followed by drying and curing. In this case, an optional component can be added to the mixture of the fibrous rubber and the crushed golf ball or the crushed golf ball, if necessary, in addition to the binder.

[0026]

Next, the present invention will be specifically described by way of examples, but the present invention is not limited to the following examples.

Example 1 After uniformly mixing the components according to Formulation Examples 1 to 12 shown in Tables 1 and 2, the mixture was applied to a surface of primer-treated water-permeable asphalt to a thickness of about 15 mm. Spread evenly. Then, the surface is 70 to 10
Rolling was performed with a hot roller at 0 ° C. to flatten the surface. Thereafter, curing was performed at room temperature to obtain an elastic pavement material having a colorful color.

The black hijiki rubber is a black fibrous rubber produced from surface rubber (tread rubber) of discarded automobile tires, and has a length of 3 to 30 mm and a thickness of 0.3 to 3 mm.
Was used.

The color hijiki rubber is a color fibrous rubber having a length of 3 to 30 mm and a thickness of 0.3 to 3 mm produced by coating the surface of black hijiki rubber with a color coating agent. And those having a color such as green. The color hijiki rubber may be used as a mixture of colors or a single color as desired, but in the present embodiment, a single color was used.

As a golf ball pulverized product (uncolored),
A discarded golf ball mainly composed of a one-piece ball and a two-piece ball and mixed with a small amount of a thread-wound golf ball was pulverized by a pulverizer to a particle size of 3 to 50 mesh, and the color used was almost white.

As the golf ball pulverized material (colored), the golf ball pulverized material (uncolored) described in JP-B-7-1192 can be used.
What was colored by the coloring method described in No. 84 was used. In this case, red or green colored golf balls were used as the crushed golf ball (coloring) of Formulation Examples 7 to 9. As a pulverized golf ball product (colored) of Formulation Example 10, an ultraviolet absorbing filler (titanium oxide) is compounded as an additive,
The one colored gray was used. As the binder, a one-component moisture-curable urethane-based binder (Takenate F-139, manufactured by Takeda Pharmaceutical Co., Ltd.) was used.

[0032]

[Table 1]

[Table 2]

Example 2 According to Formulation Examples 13 to 22 shown in Tables 3 and 4, each compounded component was uniformly kneaded and then charged into a 15 mm thick molding die. Then, at 160 ° C. for about 7 minutes, 30
Molding was performed under a pressure of kg / cm ² to obtain an elastic pavement material having a mat-like colorful color. However, Formulation Example 2
The elastic pavement material of No. 0 was monochromatic. The same as in Example 1 was used as the black hijiki rubber, the colored hijiki rubber, the crushed golf ball (colored), and the crushed golf ball (uncolored), and the binder used was a PPG (polypropylene glycol) component in the main chain skeleton. Moisture-curable liquid urethane-based binder (Takenate F-181P, manufactured by Takeda Pharmaceutical Co., Ltd.).

[0034]

[Table 3]

[Table 4]

COMPARATIVE EXAMPLE 100 parts by weight of black hijiki rubber, 34 parts by weight of a binder, and 0.07 parts by weight of a toner (color powder) were uniformly mixed, and a black elastic pavement material was obtained in the same manner as in Example 1. . The same rubber as in Example 1 was used as the black hijiki rubber and the binder.

In the elastic pavement materials of Formulation Examples 1 to 15, 17 to 19, and 21, uncolored almost white ground golf balls or colored ground golf balls are appropriately dispersed in the hijiki rubber. In addition, it was colorful and had excellent color sensation, had high hardness, and had sufficient durability. In particular, the elastic pavement materials of Formulation Examples 4 to 6, 14, and 15 using blue, green, and brown color hijiki rubbers were extremely excellent in color (colorfulness). In addition, the elastic pavement materials of Formulation Examples 16, 20, and 22 using only the crushed golf ball had extremely high hardness and excellent durability. The hardness of the elastic pavement material increased as the amount of the pulverized golf ball increased. Furthermore, Formulation Examples 7 to 10 and 17 to using a pre-colored ground golf ball.
In the elastic pavement material of No. 20, discoloration over time after construction was effectively suppressed. On the other hand, the elastic pavement material of Comparative Example, which was colored using only black rubber and using a toner, was black, had no colorful feeling and had low hardness.

The elastic pavement materials of Examples 1 and 2 both exhibited excellent elasticity, had a high porosity, had good water permeability, and were not slippery. Further, Example 1,
In the elastic pavement material 2, unnecessary pulverized golf balls generated at a driving range or the like were effectively used, so that the manufacturing cost was lower than before.

[Experimental Example] The following experiment was conducted to examine the effect of suppressing the discoloration of the elastic pavement material by coloring the ground golf ball in advance. 470 g of a crushed golf ball (particle size: 3 to 50 mesh) and a moisture-curable liquid urethane-based binder (the Takenate F-
181P) and 60 g of the mixture, and then,
It was filled into a 0 mm molding die. Then, it was molded by applying a pressure of 30 kg / cm ² at 155 ° C. for about 5 minutes by an electric press to obtain a mat-like elastic pavement material.

The crushed golf ball is described in Japanese Patent Publication No. 7-119284. The crushed golf ball is substantially white (no color) obtained by crushing a discarded golf ball with a crusher. The above-mentioned non-colored golf ball pulverized material was prepared by blending a material colored red (red coloring) with an ultraviolet absorbing filler (titanium oxide) as an additive and described in JP-B-7-119284. What was colored gray by means (gray coloring) was used.

Using each of the obtained elastic pavement materials, an accelerated exposure test was performed to examine the degree of discoloration of each elastic pavement material. In this case, light from a carbon arc lamp was continuously applied to each elastic pavement material using an exposure machine, and measurement was performed every three hours to examine the change over time in the yellowing degree and the color difference according to the Hunter's color difference formula. As an exposure machine, a Dew Cycle Sunshine Super Long Life Weather Meter (manufactured by Suga Test Instruments Co., Ltd., model WEL-SUN-DCH), and as a measuring instrument (chromaticity meter), a multi-source spectrophotometer (Suga Test Instruments Co., Ltd.) And model MSC-1S-2DH).

The yellowing degree and the color difference according to the Hunter's color difference formula were calculated as follows. In this case, arbitrarily select 10 places of the elastic pavement material after exposure by the exposure machine, measure each place with a measuring instrument, calculate the yellowing degree at each place and the color difference by the hunter's color difference formula, and average them. I took it. The results are shown in Figures 3 and 4. FIG. 3 shows the change over time in the degree of yellowing (ΔYI), and FIG. 4 shows the change over time in the color difference (ΔE _H ) according to the Hunter's color difference formula. ΔYI and ΔE _{H in} FIGS. 3 and 4 are both differences from 0 hour.

[0042] to calculate the degree of yellowing yellowness index was calculated yellowing degree based on this. The yellowness is calculated by the following formula, calculated to two decimal places, rounded according to the method defined in JIS-Z-8401 (how to round a numerical value), and displayed to one decimal place. When YI obtained by this calculation is a positive amount, it indicates the degree of yellowness. YI = 100 (1.28X-1.
06Z) / Y YI: Yellowness X, Y, Z: Tristimulus value of test sample or test piece at standard light C

The degree of yellowing is calculated by the following equation. If ΔYI obtained by this calculation is a positive amount,
Indicates an increase in yellowness. ΔYI = YI−YI ₀ ΔYI: yellowing degree YI: yellowness after exposure YI ₀ : initial yellowness of test sample or test piece

The color difference according to the hunter's color difference equation is calculated by the following equation. ΔE _H = [(ΔL) ² + (Δa) ² + (Δb) ² ] ^1/2 ΔE _H : color difference according to Hunter's color difference equation ΔL, Δa, Δb: difference in lightness index L and color coordinates in Hunter's color difference equation difference between a and b

The values of L, a and b are calculated using standard light C and J
It is calculated from the tristimulus values X, Y, and Z defined in IS-Z-8722 by the following equation. L = 10Y ^1/2 a = 17.5 (1.02XY) / Y ^1/2 b = 7.0 (Y−0.847Z) / Y ^1/2 L: Lightness index a in Hunter's color difference equation a , B: color coordinates in Hunter's color difference equation X, Y, Z: tristimulus values X, Y, Z in the XYZ color system
The value of the

3 and 4 , when the ground golf ball is colored in advance, the change in ΔYI and ΔE _H with time is smaller than in the case where the ground golf ball is not colored. It was confirmed that the discoloration of the elastic pavement material due to the yellowing of the component can be suppressed.

[0047]

The elastic pavement material of the present invention has the required hardness, has sufficient durability, can impart various colors, and has good elasticity and water permeability. It is. In this case, the elastic pavement material of the present invention has particularly excellent color appearance (colorful appearance), and its characteristics are remarkable especially when color hijiki rubber is used as the fibrous rubber. Moreover, in the elastic pavement material of the present invention , the characteristics of the elastic pavement material can be appropriately adjusted according to the intended use by adjusting the compounding ratio of the pulverized golf ball. Further, in the elastic pavement material of the present invention , by using a golf ball pulverized material having a colored layer formed on the surface, in particular, by blending an ultraviolet absorbing filler in the colored layer, the elasticity caused by yellowing of the components in the binder is obtained. Discoloration of the pavement material can be suppressed.

Therefore, the elastic pavement material of the present invention can be favorably used in applications where the elastic pavement material consisting of only fibrous rubber could not be applied up to now, and has a comfortable walking with rich color feeling. Roads, runways, passages, etc. can be built. In addition, the elastic pavement material of the present invention can be manufactured at low cost by using waste materials of golf balls.
The present invention is advantageous in cost, and according to the present invention, it is possible to reduce and effectively utilize golf ball waste.

[Brief description of the drawings]

FIG. 1 is a partially enlarged sectional view schematically showing a structure of an elastic pavement material of the present invention .

FIG. 2 is a partially enlarged cross-sectional view schematically showing the structure of an elastic pavement material consisting of only fibrous rubber.

FIG. 3 is a graph showing the change over time in the degree of yellowing (ΔYI) when performing an exposure test of the elastic pavement material of the present invention.

FIG. 4 is a graph showing a temporal change of a color difference (ΔE _H ) of a hunter according to a color difference equation when an exposure test of the elastic pavement material of the present invention is performed.

[Explanation of symbols]

 2 fibrous rubber 4 crushed golf ball 6 binder 8 void

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Takayuki Niikura 45, Kandahigashi-Matsushita-cho, Chiyoda-ku, Tokyo Bridgestone Sports Co., Ltd. (56) References JP-A-52-134235 (JP, A) 6-73703 (JP, A) JP-A-6-26002 (JP, A) JP-A-7-41661 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E01C 13/00 E01C 5/18 E01C 5/22 E01C 7/30

Claims (6)

(57) [Claims] 1. A length of 3 to 30 mm and a thickness of 0.3 to 3
90 to 50% by weight of fibrous rubber having a particle size of 3 to 50 mm.
Average hardness (JIS A hardness) of 90 degrees or more with 50 mesh
An elastic pavement material obtained by molding a mixture of 10 to 50% by weight of the above ground golf ball using a liquid curable binder such as a synthetic resin, a natural rubber or a synthetic rubber. . 2. The elastic pavement material according to claim 1, wherein a pulverized golf ball having a colored layer formed on its surface is used. 3. The coloring layer as a filler for absorbing ultraviolet light.
Ultrafine titanium oxide, ultrafine zinc oxide, ultrafine oxidation
Iron, ultrafine cerium oxide, silica-cerium oxide coating
Contains one or more selected from pigment and carbon powder
The elastic pavement material according to claim 2. 4. A fibrous rubber having a surface coated with a color coat.
4. The method according to claim 1, wherein the coating agent is coated with a coating agent.
2. The elastic pavement material according to claim 1. 5. The elastic pavement material according to claim 1, wherein the pulverized golf ball has a color different from that of the fibrous rubber. 6. The elastic pavement material according to claim 1, wherein the pulverized golf ball is made of particles having various colors.