JP2011058287A - Underlay cushion mat for artificial turf, and artificial turf laying structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an underlay cushion mat for artificial turf using a polymer sheet having high impact absorbing power and a water retaining function, which restrain thermal expansion of the polymer sheet by sunshine or the like, considerably reduces a granular filler, and have resilience closer to soil and the water retaining function. <P>SOLUTION: The underlay cushion mat for artificial turf is formed by laminating an elastic body sheet having water permeability, and a fiber material sheet formed of a fiber material. The elastic body sheet is one of urethane chip foam, urethane chips, rubber chips, foam rubber chips and a mixture thereof. The fiber material sheet is a nonwoven fabric or felt. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a water-permeable type for artificial turf laid between an artificial turf and a foundation ground, and more particularly, a water-permeable type for artificial turf suitable for creating a stadium such as a baseball field, a soccer field, a sports field, or a rooftop green zone. About.

In recent years, when constructing a stadium or a green zone, artificial turf has been adopted instead of natural turf because it has advantages such as low introduction costs and maintenance costs. Artificial turf refers to a sheet-like sheet in which a large number of piles are planted, and is filled with granular fillers such as mesh sand and rubber chips in order to obtain elasticity (Patent Documents 1, 2, etc.).
It has been known that in such an area where the artificial turf is arranged, the temperature rise due to sunshine in the summer is severe, which promotes the so-called heat island phenomenon.

Therefore, conventionally, in order to solve such a situation, an artificial turf laying structure having a water retention function has been developed (Patent Document 3, Patent Document 4, Patent Document 5, etc.).
This conventional technique suppresses a temperature rise by laying an intermediate layer having a water retention function by a synthetic resin material or the like between a surface layer sheet in which artificial turf material is planted and a foundation ground such as concrete.

However, all of these techniques require a granular filler such as mesh sand or rubber chips for obtaining elasticity. Here, as the rubber chips, those obtained by pulverizing chemical product rubber and waste tires are used. When these granular fillers penetrate the holes in the planar sheet of artificial turf and reach the permeable ascon layer (foundation ground), there is a problem that they enter the permeable ascon layer and cause clogging.
Further, conventionally, after the artificial turf was laid, there was no creation about replacing only the artificial turf of the surface layer, leaving a sheet forming an intermediate layer laid on the permeable ascon layer.

JP-A-10-152809 JP 2001-40608 A Japanese Patent Laid-Open No. 7-127011 JP 2003-129408 A JP 2008-266949 A

An object of the present invention is to provide an underlay cushion mat for artificial turf by using a polymer sheet having a high impact absorbing ability and a water retention function.
In addition, by laminating a sheet of low resilience material and a sheet of high resilience, it suppresses the thermal expansion and warping of the polymer sheet due to sunshine, etc., and provides a filter effect that prevents the inflow of filler sand and rubber chip filler, An object of the present invention is to provide an underlay cushion mat for artificial turf that can eliminate the need for a granular filler or can be significantly reduced in weight compared to the prior art, and has elasticity close to that of soil.
It is another object of the present invention to provide an underlay cushion mat for artificial turf that greatly reduces the labor required for renovation by replacing only the artificial turf on the surface when the artificial turf is renovated.

The present inventor has adopted the following configuration in order to solve the above problems.
(1) The present invention is an underlay cushion mat for artificial turf characterized in that an elastic sheet having water permeability and a fiber material sheet made of a fiber material are laminated.
(2) The artificial material according to (1) above, wherein a fiber material sheet made of a fiber material, an elastic sheet having water permeability, and a fiber material sheet made of a fiber material are sequentially laminated. It is an underlay cushion mat for turf.

(3) The above (1) or (2), wherein the water-permeable elastic sheet is any one of urethane chip foam, urethane chip, rubber chip, foamed rubber chip or a mixture thereof. It is an underlay cushion mat for artificial grass described.
(4) The artificial turf underlay cushion mat described in any one of (1) to (3) above, wherein the fiber material sheet made of the fiber material is a nonwoven fabric or felt. .
(5) The artificial turf underlay cushion mat according to the above (4), wherein the fiber material sheet made of the fiber material is a polymer polymer fiber such as polyester fiber. is there.

(6) The artificial turf underlay cushion mat described in any one of (1) to (5) above, wherein the artificial turf underlay cushion mat has a joint shape.
(7) The artificial turf underlay cushion mat described in any one of (1) to (6) above, wherein the artificial turf underlay cushion mat is perforated.
(8) A surface layer sheet in which artificial turf material is planted is laid on the foundation ground on the artificial turf underlay cushion mat described in any one of (1) to (7) above. Is an artificial turf laying structure characterized by

The effect is to provide an underlay cushion mat for artificial turf using a polymer sheet having a high impact absorbing ability and a water retention function.
In addition, the elastic sheet is sandwiched between the fiber sheets to suppress thermal expansion and warpage of the elastic sheet due to sunlight, etc., and the particulate filler is unnecessary or can be greatly reduced compared to the conventional one. The effect is to provide an underlay cushion mat for artificial turf having a close elasticity.
Further, when the artificial turf is renovated, only the artificial turf on the surface is replaced, thereby providing an effect of providing an underlay cushion mat for artificial turf that greatly saves the renovation work.

It is a partially transparent perspective view which shows one Embodiment of the artificial grass laying structure which concerns on this invention. It is sectional drawing which shows the illustration of embodiment of the underlay cushion mat for artificial turf concerning this invention. It is a top view which shows an example of embodiment which concerns on the underlay cushion mat for artificial grass by a joint type shape. It is sectional drawing which shows an example of embodiment which laminated | stacked the surface layer sheet | seat which planted the artificial turf material, and the underlay cushion mat for artificial turf.

An example of an embodiment according to the present invention will be described in detail below.
The underlay cushion mat for artificial turf according to the present invention has a structure in which an elastic sheet having water permeability and a fiber sheet made of a fiber material are laminated.

As a method of laminating an elastic sheet having water permeability and a fiber material sheet composed of a fiber material, when the foundation ground is on the lower side and the surface layer sheet on which artificial turf material is planted is the upper side, the fiber material from the upper side The structure which laminates | stacks in order the fiber material sheet comprised by this, the elastic material sheet which has water permeability, and the fiber material sheet comprised by the fiber raw material is mentioned.
Further, from above, a fiber sheet made of fiber material, an elastic sheet having water permeability, a fiber material sheet made of fiber material, an elastic sheet having water permeability, and a fiber material sheet made of fiber material A structure in which layers are stacked in order is mentioned.

Other structures may be adopted as long as they have a fiber material sheet made of a fiber material and an elastic sheet having water permeability, and these sheets are laminated in a close state.
By adopting such a structure, it was possible to obtain a cushioning property close to soil by multiple lamination of a low-repulsion fiber material and a high-repulsion elastic sheet. Therefore, in conventional artificial turf, granular fillers such as mesh sand and rubber chips are filled in order to obtain elasticity between piles. However, these granular fillers are unnecessary or at least much used compared to conventional ones. Can be suppressed.

And by laminating a low-repulsion fiber sheet and a high-repulsion elastic sheet, overall cushioning properties, impact relaxation properties, water absorption and water retention can be greatly improved.
Further, as the elastic sheet having water permeability, urethane chip foam, urethane chip, rubber chip, foamed rubber chip or a mixed material thereof is suitable.

The thickness of the elastic sheet is adjusted depending on the purpose and application, but if it is used for a general stadium, 3 to 30 mm is preferable. If it is less than 3 mm, sufficient elasticity cannot be obtained, and if it exceeds 30 mm, problems such as complicated construction occur.
The elastic sheet formed of the material has water permeability, but such a function is caused by a large number of through-holes formed in the elastic sheet and internal bubble spaces. These functions may be formed by forming an elastic foam and then performing a perforating process by a needle punch or the like, or by foaming as a single body or a polymer and continuously communicating a large number of bubbles formed inside the foam. You may do it.
By using the elastic sheet having water permeability in this way, rainwater does not collect on the artificial turf, and it is possible to use a ground or the like at any time as an all-weather type.

Next, it is preferable to use a non-woven fabric or felt as the fiber material sheet composed of the fiber material. As the material, polymer polymer fibers such as polyester fibers are preferable.
Such materials can be made into fleece formation methods such as dry method, wet method, spunbond method, melt blow method, thermal bond method, chemical bond method, spunlace method, needle punch method, stitch bond method, steam jet method, etc. The sheet is formed by a bonding method or the like.

  Although the thickness of the fiber material sheet is adjusted depending on the purpose and application, 1 mm to 10 mm is preferable if it is used for a general stadium. This is because such a thickness provides a sufficient resilience and a sufficient amount of water storage, and the construction is easy in cutting and the like.

By adopting such a structure, the water poured onto the artificial turf by sprinkling or raining permeates through the surface sheet and is stored in each of the nonwoven fabric, elastic sheet through-holes and bubble spaces, nonwoven fabric or felt. Can do.
And when the temperature of the artificial turf surface rises by sunlight etc., the water | moisture content stored in the fiber material sheet and the elastic body sheet will evaporate in air | atmosphere through a surface artificial turf hole. In this case, the temperature rise on the ground can be suppressed by removing the heat of vaporization.
Further, it is possible to adjust the water storage amount by changing the density of the fibers or the density of the elastic sheet.

Furthermore, it is preferable that the underlay cushion mat for artificial turf is formed in a joint type shape. By adopting such a structure, it is possible to quickly and easily perform the filling and placement by simply fitting the joint portion without requiring a high level of skill.
In addition, the artificial turf underlay cushion mat is perforated, and a silicon sealing adhesive or the like is allowed to flow through the hole so that the bonding operation can be performed easily and quickly.
Furthermore, the artificial turf laying structure can be easily constructed by laying the above-mentioned artificial turf underlay cushion mat and laying the surface layer sheet in which the artificial turf material is planted. When the artificial turf deteriorates with time, the repair work can be greatly saved by replacing only the artificial turf on the surface.

Next, embodiments of the artificial turf underlay cushion mat and the artificial turf laying structure of the present invention will be described with reference to the drawings.
Example 1
FIG. 1 is a partially transparent perspective view showing an embodiment of the artificial turf laying structure of the present invention.
As shown in FIG. 1, an artificial turf laying structure 10 according to the present embodiment has a surface sheet 1 in which artificial turf material is planted on the surface, a fiber sheet 2 made of a fiber material, and a water-permeable elastic material. A body sheet 3 and a fiber material sheet 2 made of a fiber material are sequentially laminated. The size is 25 m / m × 1030 mm × 1030 mm, and the weight is about 5.0 kg.

  The elastic sheet 3 having water permeability is formed of urethane chip foam, urethane chip, rubber chip, foamed rubber chip, or a mixed material thereof. The elastic sheet 3 having water permeability has a large number of through holes. The through-hole is drilled in a cylindrical shape having a diameter of 5 mm in plan view and can transmit a large amount of moisture. The thickness of the elastic sheet 3 is about 15 mm.

The fiber sheet 2 made of a fiber material uses a polyester fiber felt. The thickness of the fiber material sheet 2 is about 5 mm, and the basis weight is 600 g / m ² . The elastic sheet 3 is in close contact with the adhesive.
In this way, by sandwiching the elastic sheet 3 having rebound resilience water permeability with the fiber material sheet 2 made of a low rebound fiber material, the overall cushioning property, impact relaxation property, water absorption and water retention are maintained. There has been a significant improvement.

  If the ground is formed by this artificial turf laying structure, the impact absorption capacity is high, so there is less burden on the legs, and the water-permeable structure can provide an all-weather ground at any time without accumulating rainwater. The artificial turf can be kept at a low temperature by the heat of vaporization. Further, when the artificial turf is deteriorated with time, the repair work can be greatly saved by replacing only the artificial turf on the surface.

Example 2
FIG. 2 is a cross-sectional view showing an embodiment according to an underlay cushion mat for artificial turf of the present invention. It is the II-II arrow section in FIG. 1, Comprising: For convenience of explanation, the surface sheet | seat in which the artificial grass material was planted is abbreviate | omitted.
As shown in FIG. 2, an underlay cushion mat 30 for artificial turf according to the present embodiment is composed of a fiber material sheet 33 made of a fiber material from above, an elastic sheet 32 having water permeability in the intermediate layer, and a fiber material. The made fiber material sheets 33 are sequentially laminated.

A large number of through holes 34 are formed in the laminated integrated product, and a large amount of moisture can be permeated.
Further, the fiber sheet 33 made of a fiber material is in close contact with the elastic sheet 32 by an adhesive.

  Thus, by laminating the elastic sheet 32 having rebound resilience water permeability and the fiber sheet 33 composed of a low rebound fiber material, the overall cushioning property, impact relaxation property, water absorption and water retention Can greatly improve the performance.

  Therefore, if the ground is formed by the artificial turf laying structure according to Example 3, the impact absorption capacity is high, so there is less burden on the legs, and the permeable structure can provide an all-weather ground anytime without accumulating rainwater. The artificial turf can be kept at a low temperature by the heat of vaporization of the water containing the layer. Further, the fiber material sheet 33 can prevent the filler and other fillers from flowing in and prevent the drainage from deteriorating. Furthermore, when the artificial turf is deteriorated over time, the repair work can be greatly saved by replacing only the artificial turf on the surface.

Example 3
FIG. 3 is a plan view illustrating an example of an embodiment of an artificial turf underlay cushion mat having a joint shape.
The artificial turf underlay cushion mat 40 of this embodiment has the artificial turf laying structure shown in FIG. That is, a surface layer sheet in which artificial turf material is planted is laid on the surface, and a fiber sheet made of a fiber material, an elastic sheet having water permeability, and a fiber material sheet made of a fiber material are sequentially laminated. . The size is 25 m / m × 1030 mm × 1030 mm, and the weight is about 4.0 kg.

  The artificial turf underlay cushion mat according to the present embodiment has fitting projections 41 and recesses 42 formed alternately on the side as shown in the figure. That is, when a plurality of artificial turf underlay cushion mats according to the present embodiment are laid and arranged, the fitting protrusion 41 on the right side fits into the recess 42 on the left side of the adjacent cushion mat, so that the joint portion is fitted. Just by combining them, it is possible to construct a ground with artificial grass easily and quickly without any special skill.

Reference numeral 43 denotes a through hole (φ10 mm), which is a mechanism for fixing the artificial turf underlay cushion mat to the water-permeable ascon layer (foundation ground). That is, after temporarily installing the underlay cushion mat and confirming the position, the silicon sealing adhesive is introduced and fixed from the upper part of the through hole 43. By having such a mechanism, the construction period can be greatly shortened.
In addition, the artificial turf underlay cushion mat 40 according to the present embodiment is formed with a large number of through holes for water permeability having a diameter smaller than that of the through holes 43.

Example 4
FIG. 4 is a sectional view showing another embodiment of the artificial turf laying structure of the present invention.
As shown in FIG. 4, the artificial turf laying structure 50 according to the present embodiment has a surface layer sheet 51 in which artificial turf material is planted on the surface, a fiber material sheet 53 made of a fiber material in order from the upper side, and water permeability. The elastic sheet 52 having the properties and the fiber sheet 53 made of a fiber material are laminated.

  A large number of turfs 55 are planted on the base sheet on the surface sheet 51 on which the artificial turf material is planted. In this embodiment, although not necessarily required, a granular filler such as a rubber chip may be filled in order to obtain elasticity.

  The water-permeable elastic sheet 52 is formed of urethane chip foam, urethane chip, rubber chip, foamed rubber chip, or a mixture thereof. A large number of through holes 54 (φ5 mm) are formed in the laminated cushion mat for artificial turf so that a large amount of moisture can permeate. The thickness of the elastic sheet 52 is about 15 mm.

The fiber material sheet 53 made of a fiber material is made of a polyester fiber felt material. The elastic sheet 52 is in close contact with an adhesive.
Thus, by laminating the elastic sheet 52 having a rebound resilience water permeability and the fiber sheet 53 composed of the low rebound fiber material, the overall cushioning property, impact relaxation property, water absorption and water retention The characteristics are greatly improved.

  If the ground is formed by this artificial turf laying structure, the impact absorption capacity is high, so there is less burden on the legs, and the water-permeable structure can provide an all-weather ground at any time without accumulating rainwater. The artificial turf can be kept at a low temperature by the heat of vaporization. Further, when the artificial turf is deteriorated with time, the repair work can be greatly saved by replacing only the artificial turf on the surface.

  INDUSTRIAL APPLICABILITY The present invention can be used for an artificial turf underlay cushion mat laid between an artificial turf and a foundation ground. In particular, it can be used as an underlay cushion mat for artificial turf suitable for building a stadium, a playground or a rooftop green area used for a baseball field, a soccer field, a tennis court, a gate ball and the like.

DESCRIPTION OF SYMBOLS 1 Surface sheet | seat which planted artificial turf material 2,32,52 Permeable elastic sheet 3,33,53 Fiber material sheet | seat comprised with fiber material 4,34,54 Through-hole 10 Artificial turf laying structure 30, 40, 50 Cushion mat for artificial grass

Claims (8)

An underlay cushion mat for artificial turf, wherein an elastic sheet having water permeability and a fiber sheet made of a fiber material are laminated. The underlay cushion mat for artificial turf according to claim 1, wherein a fiber sheet made of a fiber material, an elastic sheet having water permeability, and a fiber material sheet made of a fiber material are sequentially laminated. . 3. The artificial turf for an artificial turf according to claim 1, wherein the water-permeable elastic sheet is any one of urethane chip foam, urethane chip, rubber chip, foamed rubber chip or a mixture thereof. Underlay cushion mat. The underlay cushion mat for artificial turf according to any one of claims 1 to 3, wherein the fiber material sheet made of the fiber material is a nonwoven fabric or felt. 5. The artificial turf underlay cushion mat according to claim 4, wherein the fiber material sheet made of the fiber material uses a polymer polymer fiber such as a polyester fiber as a material. The artificial turf cushion cushion mat according to any one of claims 1 to 5, wherein the artificial turf cushion cushion mat has a joint shape. The artificial turf underlay cushion mat according to any one of claims 1 to 6, wherein the artificial turf underlay cushion mat is perforated. An artificial turf comprising an artificial turf underlay cushion mat according to any one of claims 1 to 7 laid on a foundation ground, and a surface sheet in which an artificial turf material is planted. Laying structure.

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