JP2006265915A - Artificial turf ground and method of producing artificial turf ground - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an artificial turf ground which adequately maintains moisture evaporating effect, exhibits a natural tone when viewed from above, and ensures the natural tone over a long period of time, and to provide a method of producing the artificial turf ground. <P>SOLUTION: The artificial turf ground 100 is formed of a base layer 40 and artificial turf laid on the base layer. The artificial turf includes a particle layer which is obtained by filling particles between turf threads. Herein the particle layer 10 is filled with the particles 11 formed of crushed pieces of burnt clay. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an artificial lawn ground in which sand and other granular materials are filled between turf yarns made of synthetic resin fibers and a method for producing the same.

  Conventionally, a large number of synthetic resin fibers were planted on the base fabric using a tufting machine, and a backing material such as rubber latex was applied to the back of the base fabric to fix the turf yarn. Granulated artificial turf in which a granular layer such as sand is filled between turf yarns provided to provide a granular layer is widely used as a surface material for various sports stadiums.

  In such an artificial turf, for example, in Patent Document 1, a fiber structure or the like is basically used on a base fabric of an artificial turf in order to lower the surface temperature due to the transpiration effect of moisture penetrating the filler. It has a moisture retention layer of 0.7 to 30 mm, more preferably 3 to 10 mm, which is located between the surface and the base fabric, and is used for the effect of cooling the surrounding environment due to the heat of vaporization of moisture evaporation or for a stadium. In this case, a moisture-retaining artificial turf having an effect of preventing scratches and / or burns is disclosed.

Further, Patent Document 2 discloses an artificial turf ground containing sand in which natural cinnabar and / or hygroscopic synthetic resin particles having an oxalic acid content of 85% or more are used as a filler, and a water-absorbing substance is laid on the lower layer. .
JP 2003-129408 A JP-A-1-131627

  However, in the conventional artificial turf as described in Patent Documents 1 and 2, when viewed from above, moisture retention layers and natural dredged sand used as fillers are visually recognized, and the color of these fillers is unnatural. There is a case where an impression is received, and even if a natural color tone is obtained by adding a pigment or the like to the filler, there is a risk of fading or decoloring due to long-term use and an unnatural color tone.

  The present invention has been made in view of the problems as described above, and can easily make the color tone when viewed from above and can maintain a natural color tone over a long period of time. And a method for producing an artificial lawn ground.

  In order to achieve the above object, the present invention is configured as follows. That is, the artificial turf ground according to the present invention has turf yarn planted on a base fabric, a backing material is applied to the back surface of the base fabric to fix the turf yarn, and the turf yarn is granulated between the planted turf yarns. A ground in which an artificial lawn filled with a body and provided with a granular material layer is laid on a base layer, wherein the granular material layer is blended with a granular material made of pulverized pieces of a clay fired product. Is.

  Moreover, the granular material which consists of a grinding | pulverization piece of a clay baked material is mix | blended at least surface vicinity of a granular material layer, It is characterized by the above-mentioned.

  The clay fired product is at least one selected from the group consisting of tiles, bricks, ceramics, and porcelain, and is discarded.

  In addition, the method for producing an artificial lawn ground according to the present invention collects discarded clay fired products and uses the crushed pieces obtained by pulverizing the clay fired products to provide a space between the turf yarns planted on the base fabric. A granular material layer is formed on the substrate.

  According to the artificial lawn ground according to the first aspect of the present invention, moisture is held by a large number of bubbles present in the clay fired product, and the temperature near the ground surface can be lowered by the transpiration effect of the moisture. However, a light brown color tone that easily approximates the soil color is obtained simply by blending the calcined clay into the granular material layer, and even when viewed from above the ground, it becomes a natural color tone, and the color tone is a raw material. Since it is derived from clay, a natural color tone can be maintained over a long period of time.

  Further, according to the invention of claim 2, the granule made of the crushed piece of the clay fired product is blended at least in the vicinity of the surface of the granule layer, so that when the ground is viewed from above, the light brown that the granule has. The color tone is more clearly exhibited, and a more natural color tone is preferable.

  Further, according to the invention of claim 3, even if the clay fired product is discarded, the performance of retaining moisture is not so much reduced to the extent that the surface is soiled, and does not lead to performance degradation and is inexpensive. A granular material layer can be formed, which is preferable.

  According to the method for producing an artificial lawn ground according to the present invention of claim 4, clay fired products such as tiles, bricks, earthenware, porcelain take a long time to return to clay even if discarded, In addition, it is generated as a large amount of residential waste and is regarded as a problem as waste. However, the amount of waste generated can be reduced by reusing such a clay fired product to form a granular layer. A granular layer capable of lowering the temperature of the ground surface can be formed at low cost by the evaporation of the moisture retained by the bubbles that are generated.

  BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment according to the present invention will be specifically described below with reference to the drawings.

  FIG. 1 is a cross-sectional view showing an embodiment of an artificial lawn ground according to the present invention. This artificial lawn ground 100 is formed by laying the artificial lawn on the foundation layer 40 and then spreading the granular material layer 10 with a sand spreader. The artificial lawn is a turf yarn 20 formed by twisting a 5500 decidex nylon monofilament yarn 201 and a 5500 decidic high-density polyethylene slit yarn 202 on a polypropylene base fabric 30, and a yarn weight of 1.4-2. The turf leaves are formed by planting hair so as to be 1 kg / m 2 and a pile length of 50 to 100 mm.

  The granular material layer 10 has a two-layer structure of a surface layer 1 disposed on the surface of the artificial lawn ground and a lower layer 2 below the surface layer 1, and the lower layer 2 is about 0. Rubber particles of 3 to 3 mm are blended and sprayed at a rate of 30 kg / m2. The surface layer 1 is formed of only the granular material 11 having a particle diameter of 0.5 to 5 mm obtained by pulverizing the clay roofing material, and water that has entered the bubbles contained in the granular material 11 due to rainfall, watering or the like evaporates. The surface temperature of the ground is lowered by the transpiration effect.

  The clay tile material used for the granular material 11 is preferably an unglazed tile in which bubbles appear on the surface of the tile material. However, if the tile material is pulverized, the proportion of glaze and the like that appears on the surface of the granular material 11 is particularly limited. Instead of tiles, it is possible to appropriately use glazed tiles (black tiles), glaze tiles, salt baked tiles, and the like. Moreover, if it is a clay baking thing, it will not be limited to a tile material, The thing which crushed brick, ceramics, porcelain, etc. can be used suitably. The particle size of what is used as the granular material 11 is preferably 0.5 to 5 mm. When the particle size is less than 0.5 mm, the air permeability from the granular material layer 10 is deteriorated and the water is not sufficiently evaporated, and when the particle size exceeds 5 mm, walking is performed. It is not preferable because it leads to deterioration of feeling and easy formation of sharp parts in the pulverized granular material 11.

  In addition, if the fired clay is used by collecting and crushing discarded tiles, bricks, ceramic pieces, porcelain pieces, etc., the amount of waste will be reduced, and crushing obtained by crushing The upper limit of the particle size of the piece is set, for example, a particle size of 5 mm or less, a particle size of 0.5 to 5 mm is used as the granular material 11, and a fine powder having a particle size of less than 0.5 mm is reused as clay. Thus, it may be possible to reuse all of the discarded clay fired product.

  The granular material layer 10 is not limited to the two-layer structure described above, and may be a single-layer structure or a multilayer structure of three or more layers as long as the granular material 11 is included in the vicinity of the surface layer. The thickness of the layer including the granular material 11 is preferably 5 mm to 15 mm, and if the thickness is less than 5 mm, a portion where the surface layer 1 is not sufficiently covered with the granular material 11 is easily formed, and it is difficult to obtain an appropriate transpiration effect. . If the thickness exceeds 15 mm, the surface characteristics of the ground are mostly due to the characteristics of the granular material 11, and it becomes difficult to obtain advantages such as flexibility inherent to artificial grass.

(Example)
In the embodiment shown in FIG. 1 described above, the surface layer is formed to have a thickness of 5 mm by 100% by weight of a crushed piece having a particle size of about 3 mm obtained by pulverizing a black glaze tile, and the lower layer is sand 20 having a particle size of 2 mm or less. Weight percent and 80% by weight of rubber particles having a particle size of about 2 mm were blended and formed into a thickness of 40 mm to obtain an artificial lawn ground of the example according to the present invention.

(Comparative example)
In the embodiment shown in FIG. 1 described above, only the lower layer is formed without providing a surface layer, and the lower layer is composed of 40% by weight of sand having a particle size of 2 mm or less and 60% by weight of rubber particles having a particle size of about 2 mm. Thus, the artificial lawn ground of Comparative Example 1 according to the present invention was obtained.

  The artificial lawn ground according to the example and the comparative example was visually confirmed from above and the appearance thereof was confirmed. In the example, a light brown color tone was visually recognized from the gap between the lawn yarns, and the lawn was crowded from the soil. It was such a natural impression. In the comparative example, black rubber particles and grayish white sand are visually recognized, and an artificial and unnatural impression is received.

It is sectional drawing which shows one Embodiment of the artificial grass-made ground concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surface layer 11 Granule 2 Lower layer 10 Granule layer 20 Turf thread 30 Base cloth 40 Base layer 100 Artificial lawn ground

Claims (4)

  Artificial turf yarn is planted on a base fabric, a backing material is applied to the back surface of the base fabric to fix the turf yarn, and a granular material layer is provided by filling the turf yarn between the planted turf yarns. An artificial lawn ground comprising a lawn laid on a base layer, wherein the granule layer is blended with a granulated body made of pulverized pieces of clay.   2. The artificial lawn ground according to claim 1, wherein the granulated body made of pulverized pieces of the clay fired product is blended at least near the surface of the granular layer.   The artificial lawn ground according to claim 1 or 2, wherein the clay fired product is at least one selected from the group consisting of tile, brick, earthenware, and porcelain, and is discarded.   An artificial lawn characterized by collecting a discarded fired clay and using a pulverized piece obtained by pulverizing the fired clay to form a granular layer between turf yarns planted on a base fabric. A manufacturing method for the ground.

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