JP3190102B2 - Elastic pavement material with artificial turf, method for producing long elastic pavement material, and method for producing elastic pavement material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an elastic pavement with artificial turf,
And a method for producing a long elastic pavement material and a method for producing an elastic pavement material, including a golf course, a bat in a driving range, a baseball field, a tennis court, an athletic field, etc., and an artificial turf underpad or underpad. Used for

[0002]

2. Description of the Related Art An elastic body is known in which a mixture of various types of vulcanized rubber pulverized products (chips) and pulverized vulcanized rubber sponge (chips) is bonded by an adhesive (Japanese Utility Model Publication No. 52-162).
No. 6). Further, as an artificial turf underpad used for a bat at a golf course or a golf driving range, an elastic pavement material with artificial turf in which an artificial turf is adhered to the above elastic body is also known. Further, as an underpad with artificial turf used in baseball fields, tennis courts, athletics stadiums, etc., those in which sand-containing artificial turf excellent in shock absorption is disposed on various permeable elastic bodies are used. It is becoming a trend. In particular, in the case of the sand-filled artificial turf, when the ground is inclined and the drainage treatment is performed, the outflow of the sand occurs. For example, the apparent density of the product is 0.3 to 0.5 g / c.
It is desired to have a m ³ and a water permeability of about 0.01 to 0.03 cm / sec.

[0003]

[Problems to be Solved by the Invention]
The elastic body disclosed in Japanese Unexamined Patent Publication No. 2-1626 discloses that when rainwater is used outdoors, water is permeable and water is immersed in water at about 1-2
It expands about%. Therefore, in the case of the artificial pavement with artificial turf using this elastic body, the artificial turf does not expand, so that the terminal portion of the elastic body warps. In addition, when the above sand-filled artificial turf is used, the elastic body disposed thereunder expands due to water and protrudes from the artificial turf or generates ripples. Accordingly, in order to avoid this, a gap is provided between the elastic bodies (mats) so as to be installed.
In this case, it is difficult to make this gap constant,
Further, there is a problem that a depression is generated on the surface of the artificial turf.

[0004] The present invention is intended to overcome the above drawbacks, the water-permeable cushion material layer by water immersion warping, protruding, waving, Oyo artificial turf with elastic pavement material is not generated recess
And its manufacturing method, as well as high precision that does not expand due to water immersion
It is an object of the present invention to provide a manufacturing method capable of manufacturing an elastic pavement material .

[0005]

Means for Solving the Problems That is, the artificial object of the first invention is described.
The elastic pavement material with turf is a water-permeable cushioning material layer comprising at least the vulcanized rubber sponge pulverized product of the vulcanized rubber pulverized product and the vulcanized rubber sponge pulverized product and bonding the pulverized products together, one surface of both surfaces of the permeable sheet layer adhered on at least one surface of both surfaces of the cushioning material layer, made of an elastic pavement material (the cookie
In the case of the above-mentioned elastic pavement material in which the
On the surface of the exposed cushioning material layer), a water-permeable artificial grass layer
Is formed by bonding . In the second invention, the water-permeable sheet layer may be a cloth, a wire mesh, a cold gauze or a nonwoven fabric.

According to a third aspect of the present invention, there is provided a method for producing a long elastic pavement material, wherein at least the vulcanized rubber sponge pulverized material of a vulcanized rubber pulverized material or a vulcanized rubber sponge pulverized material having an adhesive applied to a surface thereof. The material is filled between the elongated lower permeable sheet and the elongated upper permeable sheet or the supporting sheet, and then, in the filled state, the two sheets are pressed by using a moving roller. The above-mentioned pulverized material is adhered by applying pressure and heating at the pressurizing section, and the long permeable cushion material layer and the long permeable cushion material layer are formed on at least one surface of the long permeable cushion material layer. It is characterized by continuously producing a long elastic pavement material comprising a long water-permeable sheet layer to be bonded. This long elastic pavement material is convenient in terms of storability when wound into a roll. A fourth aspect of the present invention is characterized in that, after producing the long elastic pavement material in the third invention, the long elastic pavement material is cut at a desired pitch in a width direction of the long elastic pavement material.

[0007]

According to the test of the present inventor, it has been found that, among the pulverized vulcanized rubber and the pulverized vulcanized rubber sponge, at least the pulverized vulcanized rubber sponge and the water-permeable elasticity obtained by adhering the pulverized substances to each other. Even if each pulverized material particle constituting the pavement material is immersed in water, even if it is immersed in water, its hydrophobic material [for example, chloroprene rubber (CR), ethylene-propylene rubber (E)
PDM) etc.], there is almost no water expansion. However, this water-permeable elastic pavement material undergoes significant water expansion. The cause is not yet clear, but it is.

On the other hand, the elastic pavement material with artificial turf of the present invention has a water-permeable sheet layer (special) on one surface of a predetermined cushioning material layer.
And an artificial turf layer is formed on the other surface by bonding, so that the artificial turf layer is immersed in water, and even if the cushioning material layer tries to expand, water swelling does not occur as a whole. No warping of the terminal occurs.

[0009] The method for producing the long elastic pavement material is as follows.
Vulcanized rubber pulverized material and vulcanized rubber
At least the vulcanized rubber sponge pulverized material
The product is a long lower permeable sheet and a long upper permeable sheet
And then pressurize and heat them to make them long
This is for producing a resilient pavement material. Therefore, this manufacturing method
According to the method, a long elastic pavement material can be manufactured continuously.
Further, thereafter, desired widthwise direction of the long elastic pavement material is desired.
By cutting at the pitch, bullets of the desired size can be easily
It can produce a pavement material.

[0010] Even when the artificial turf containing sand is placed on the elastic pavement produced by the method of the present invention, that is, when the two are not adhered to each other, the function of the water-permeable sheet layer, the artificial turf and the sand the action of the weight, the water-swelling of the elastic pavement material is suppressed. Therefore, since the elastic pavement does not protrude and does not wrinkle, no gap is required between the mats when the elastic pavement is installed, and a depression on the surface of the artificial turf is eliminated. Furthermore, each layer constituting the elastic pavement material and artificial turf with elastic pavement material is desired because it has a water permeability, elastic pavement material or the onset prepared by the method of the present invention
Not Rukoto to inhibit the permeability of the bright artificial turf with elastic pavement material.

[0011]

As described above, according to the method of the present invention,
Is the elastic pavement material or artificial turf with elastic pavement material of the present invention,
Even if this is immersed in water, the terminal portion does not warp. In addition, even if the artificial turf containing sand is simply placed on the elastic pavement without bonding, the elastic pavement protrudes,
No waviness is generated, so that this elastic pavement material can be arranged without gaps, and the occurrence of depressions on the surface of the artificial turf is also eliminated. According to this production method, a useful long elastic pavement material or an elastic pavement material having the above-described effects can be produced.

[0012]

The present invention will be described below in detail with reference to examples. In this embodiment, (1) an elastic pavement material (hereinafter referred to as a mat) to which a water-permeable sheet is not adhered, (2) an artificial turf mat having an artificial turf adhered on the mat, (3)
Further, a mat with an artificial turf / cold gauze (shown in FIG. 2) having a cold gauze 2 adhered on the back surface of the mat 1 and the artificial turf 3 on the surface thereof was prepared, and this water immersion test was performed. Table 1 shows the results.

The above mat alone (1) [300 × 300 ×
15 (thickness) mm, apparent specific gravity; 0.5]
R sponge pulverized product (under 8 mm sieve, apparent specific gravity;
2) and a crushed product (average diameter; 3 to 4 mm, apparent specific gravity; 0.4) of tire rubber (vulcanized) were mixed at a volume ratio of 1: 1 and further added to the total weight of these crushed products. About 4% by weight of an adhesive (urethane-based adhesive) is also mixed,
With sufficient stirring, the adhesive was coated on the surface of each ground product. This is heated under pressure and compression (about 1 to 5 kg / cm ² ) using predetermined molds 41 and 42 shown in FIG. 3 (about 150 ° C.).
Manufactured.

The mat with artificial turf (2) is an artificial turf layer formed by bonding an artificial turf to the mat (1) alone (the surface of the mat alone is exposed on the other surface). is there. Commercially available artificial turf [trade name;
T7000 "(manufactured by Unitika Ltd.)]. A urethane-based adhesive was used as the adhesive used. The mat with artificial turf and cold gauze (shown in FIG. 2) (3) is obtained by bonding a cold gauze 2 on the back surface of the mat 1 and bonding the artificial turf 3 on the surface thereof. As this cold gauze 2,
The coarseness of 12 mesh is made by using the 20th yarn.

[0015]

[Table 1]

In the table, the expansion rate is represented by [(L1-L1), where L0 is the length of a predetermined location before expansion and L1 is the length after expansion.
L0) / L0] .times.100 (%). In addition, sled (m
m) is the size (mm) of the warpage of the end face after water immersion compared to before water immersion. According to the above results, in the case of a mat alone without cold gauze, when immersed in water for a predetermined time,
It expanded 0.8-1.3%. In the case where the artificial turf was adhered to only one surface, a large warp of 2 to 5 mm was generated. Furthermore, in the mat with the cold gauze, the coefficient of expansion on the exposed side of the mat was 1.0 to 1.4%. On the other hand, on the cold gauze side of this mat with cold gauze, it did not expand at all until immersion for 24 hours, and expanded only about 0.1% after 48 to 72 hours. Moreover, in the case of the cold gauze / artificial turf mat, even after immersion for 72 hours, no warping occurred.

As described above, if cold gauze (and artificial turf) is adhered, expansion and warpage can be significantly reduced. Also, according to the above results, even if the artificial turf with sand is not adhered and is arranged on the mat exposed surface of the mat with the single-sided cold gauze, the weight of the sheet layer on the ground contact side, the artificial turf and the sand causes Since the water expansion of the mat is suppressed, the mat does not protrude and ripples do not occur. Therefore, no gap is required between the mats when the mats are installed, and the occurrence of depressions on the upper surface of the artificial turf is eliminated. In addition, the cold gauze used is coarse and has a mesh of 12 mesh and is made of non-metal, so it has excellent water permeability,
It does not rust like metal and has excellent durability. Also,
Since the above-mentioned crushed material is a reused product, it also becomes an effective use of resources.

The present invention is not limited to the specific embodiments described above, but can be variously modified within the scope of the present invention according to the purpose and application. That is,
The mixing ratio of the above-mentioned vulcanized rubber sponge and vulcanized rubber sponge may be variously changed and used, and only the vulcanized rubber sponge may be used alone. As the pulverized vulcanized rubber or pulverized vulcanized rubber sponge, various materials, shapes, sizes, and the like can be used. For example, as the material of the pulverized vulcanized rubber sponge, in addition to the above CR, ethylene-propylene rubber, nitrile rubber, SBR and the like can also be used.

Further, as a material constituting the above-mentioned water-permeable sheet layer, besides the above-mentioned cold gauze, cloth, wire mesh, non-woven fabric and the like can be used, and the thickness and the like are not limited. Further, as shown in FIG. 1, the water-permeable sheet layers (2a, 2b) can be formed not only on one side but also on both sides of the cushion material layer 1a. In this case, the water expansion is further reduced. The amount of the adhesive to be used may be any range as long as the pulverized material can be adhered to each other and can be adhered to a degree having water permeability as a whole, and the material is selected from a rubber type, an epoxy type, and the like other than those described above. Can also.

The adhesion between the water-permeable sheet and a mat (cushion material layer) or the like may be achieved by a method other than the above, in which the mat is simultaneously formed with the mat. In this case, for example, FIG.
First, a mixture of the vulcanized rubber pulverized material 5a and the vulcanized rubber sponge pulverized material 5b, the surface of which is coated with an adhesive, is passed through the long lower permeable sheet 2a and the long upper water permeable sheet 2a. Between the conductive sheet 2b and the supporting sheet.
The support sheet may be coated with a release agent, for example, or may be made of a material that can be easily peeled off, so as not to adhere to the vulcanized rubber pulverized material. Then, in the filled state, the two sheets are conveyed to a pressurizing unit using a pair of moving belt conveyors 6a and 6b, and pressurized and heated by the pressurizing unit to bond the above crushed materials. I do. Thereby, the long elastic pavement material 7 consisting of the long water-permeable cushion material layer and the long water-permeable sheet layer adhered on at least one surface of the long water-permeable cushion material layer is continuously formed. Can be manufactured Next, if necessary, the long elastic pavement 7 can be cut at a desired pitch in the width direction to produce an elastic pavement having a predetermined shape and size.
As the reference example, instead of the support sheet, the use of elongated artificial grass, elongated artificial grass with elongate elastic member can be obtained. It is sufficient for the artificial turf to be able to withstand the temperature for bonding and heating.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of an elastic pavement material in which a water-permeable sheet layer is formed on both surfaces of a cushion layer.

FIG. 2 is an explanatory sectional view of an elastic pavement material with artificial turf manufactured in an example.

FIG. 3 is an explanatory cross-sectional view showing a state in which an elastic pavement material is manufactured using a mold in Examples.

FIG. 4 is an explanatory view showing a state in which a long elastic pavement material is continuously manufactured.

[Explanation of symbols]

1; mat, 2; cold gauze (layer), 3; artificial turf (layer), 4
1, 42; mold, 5a; pulverized vulcanized rubber, 5b; pulverized vulcanized rubber sponge, 7: long elastic pavement material.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI B29K 105: 02 105: 24 (72) Inventor Hiroshi Ito 1-16-30 Millennichi, Atsuta-ku, Nagoya-shi INOAC CORPORATION In-plant (56) References JP-A-4-52301 (JP, A) JP-A-2-33801 (JP, U) JP-A-64-14203 (JP, U) (58) Fields investigated (Int. . ⁷ , DB name) E01C 5/00-5/22 E01C 13/08

Claims (4)

(57) [Claims] 1. Vulcanized rubber pulverized product and vulcanized rubber sponge powder
From at least the pulverized vulcanized rubber sponge
Water-permeable cushion made by bonding the pulverized materials to each other
Cushion layer and at least one of the two surfaces of the cushion layer.
And a water-permeable sheet layer adhered on one side.
The water-permeable artificial turf layer is adhered to one of the two surfaces of the elastic pavement material (in the case of the elastic pavement material in which the cushion material layer is exposed, the surface of the exposed cushion material layer). An elastic pavement with artificial turf characterized by being formed. 2. The water-permeable sheet layer is made of cloth, cold gauze,
The elastic pavement with artificial turf according to claim 1, which is made of a woven fabric or a wire mesh.
Wood. 3. A vulcanized rubber sponge pulverized product having at least one of a pulverized vulcanized rubber sponge and a pulverized vulcanized rubber sponge, the surface of which is coated with an adhesive. The sheet is filled between the upper water-permeable sheet and the supporting sheet, and then, in the filled state, both sheets are conveyed to a pressurizing unit using a moving roller, where the sheet is pressed and heated by the pressurizing unit. Then, the above-mentioned crushed materials and the respective crushed materials and the above-mentioned permeable sheets are adhered to each other, and the long permeable cushion material layer and the long permeable cushion material layer are formed on at least one surface of the long permeable cushion material layer. A method for producing a long elastic pavement material, comprising continuously producing a long elastic pavement material comprising a long water-permeable sheet layer to be bonded. 4. The method for producing an elastic pavement material according to claim 3, wherein after the elongate elastic pavement material is produced, the elongate elastic pavement material is cut at a desired pitch in a width direction of the elongate elastic pavement material. .