JPH0232402B2 - JINKOSHIBANONENSETSUCHAKUSEKOHOHO - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for adhesively installing artificial turf, and more specifically, for adhesively installing water-permeable tufted artificial turf on a base surface such as concrete or asphalt. Regarding how to.

(Prior Art) Recently, in order to replace the complicated management of natural turf in natural turf stadiums, artificial turf is increasingly being used for competitions such as baseball, soccer, and American football.

Conventional artificial turf used in this type of competition is either held by a base fabric with a very dense weave to prevent the pile fibers forming the turf from falling out, or Alternatively, the back of the base fabric is supported by a vinyl chloride polymer or a rubber-like substance. Therefore, in this type of artificial turf, because the base fabric threads are very dense, or because the back of the base fabric is lined with a completely non-permeable layer, the surface of the artificial turf does not melt during rain. There was also the problem that water puddles were likely to form on the floor, requiring drainage treatment during or after rain, and that moisture from underground could collect on the back surface.

Therefore, artificial turf has been developed to maintain water permeability (Patent No. 868625
(See Publication No. 45894)), but the current situation is that it is still unsatisfactory.

(Problems to be Solved by the Invention) By the way, the present inventor has developed an artificial turf that has better water permeability and dimensional stability than the above-mentioned conventional artificial turf. It is formed from pile yarns by tuft-weaving pile yarns that form a grass-like surface between the weft and weft yarns, that is, on a plain-woven base fabric with an opening of 1 to 5 mm square, and intertwining it with the yarns that make up the base fabric. We have developed and provided a water-permeable tufted artificial turf that is integrally fixed by resin-processing both the protruding components and the plain-woven base fabric (Japanese Patent Application Laid-open No. 47469/1983).

This water-permeable tufted artificial turf can be installed directly on the stadium ground, but the inventors have now developed a method for adhering and installing it on a base surface such as cocrete or asphalt.

Conventional methods for constructing water-permeable artificial turf include, for example, the method described in Patent No. 868625, in which a supporting member is adhered to the lower layer of artificial turf, and the supporting member is driven into the ground using a "wedge." However, this method has the disadvantage that the artificial turf is deformed in the horizontal direction due to intense exercise by athletes on the turf, and for example, the lines necessary for competition scenes are distorted. That's what I was doing.

Furthermore, since a "wedge" is used during actual construction, it is not a desirable method for construction on concrete or asphalt surfaces.

(Means for Solving the Problems) The present invention eliminates the above-mentioned drawbacks and provides a method for adhesively adhering and installing tufted artificial turf with good dimensional stability, especially on concrete and asphalt substrate surfaces. It is something.

By the way, the adhesive mentioned here has sufficient shear resistance in the horizontal direction, but its resistance to tensile stress in the vertical direction, such as when peeling off when repairing artificial turf, is not so great, and it is difficult to peel off. Refers to adhesion using an adhesive that is possible.

In other words, the adhesive construction method for artificial turf of the present invention is as follows:
The adhesive of the tufted artificial turf previously proposed by the present inventor,
Concerning construction, it is formed from pile yarn by tuft-weaving pile yarn to form a grass-like surface on a plain-woven base fabric with an opening of 1 to 5 mm square, and entwining it with the yarns that make up the base fabric. In a method of adhesively applying water-permeable tufted artificial turf, which is integrally fixed by resin-processing both the protruding constituent parts and the plain-woven base cloth, onto a base surface such as concrete or asphalt; on the back side of the artificial turf, A support layer made of synthetic resin foam with holes throughout is adhered (not adhesive) to form an artificial turf-support layer, and the artificial turf is applied to concrete, asphalt, etc. to which the artificial turf is applied adhesively. An asphalt rubber-based adhesive is partially applied to the surface of the base, and then a lower support layer made of synthetic resin foam with holes throughout is placed on top of it, and the adhesive is applied to the base. Then, after partially applying a polyacrylic acid ester adhesive to the upper surface of the lower support layer, the artificial turf-support layer was placed on top of it and integrally adhered with adhesive; This is the adhesive construction method for artificial turf. In the present invention, the support layer and the lower support layer to be adhered to the back surface of the artificial turf are both made of synthetic resin foam and have holes throughout.
As the synthetic resin constituting the foam, polyvinyl chloride is preferable. A preferred support layer includes, for example, one in which a coarsely porous woven fabric made of polyester fiber is interposed inside the support layer, the entire woven fabric is impregnated with a synthetic resin, and foamed so that pores remain.

For adhesive bonding between the base surface of concrete, asphalt, etc. and the lower support layer, an asphalt rubber-based adhesive that exhibits adhesive properties for both is used; Examples include asphalt rubber-based adhesives such as TL-52BX manufactured by Modern Plastics Co., Ltd.
The adhesive is preferably used in the form of a nonwoven fabric impregnated with an asphalt rubber adhesive, or a double-sided adhesive tape prepared by coating both sides of a plastic film with the adhesive.

Both the support layer and the lower support layer of artificial turf are synthetic resin foam layers, and a polyacrylate-based adhesive is used for adhesive bonding between the two support layers. Examples of the adhesive include TL-28 manufactured by Modern Plastics Co., Ltd. The adhesive can also be used in the form of a double-sided adhesive tape, which is obtained by impregnating a nonwoven fabric with a polyacrylic ester adhesive, or by applying the adhesive on both sides of a plastic film.

In addition, the asphalt rubber-based adhesive is partially applied to the base surface, and the polyacrylic ester-based adhesive is applied partially to the upper surface of the lower support layer, but these adhesives adhere to both sides. If a tape is used, this tape should be adhered in the form of a checkerboard stripe at intervals of 0.5 to 2 m, or if it is not in the form of a double-sided adhesive tape,
It has a width of 2 to 10 cm, and can be applied at intervals of 0.5 to 2 m in a grid pattern in the gaps between them.

(Function) In the present invention, the adhesion between the back surface of the artificial turf and the support layer made of synthetic resin foam is not adhesive, but is sufficient to withstand stress in the horizontal and vertical directions. Although it has adhesive strength, other adhesives are used between the base surface and the lower support layer and between the lower support layer and the artificial grass-support layer. Therefore, although it has sufficient shear resistance in the horizontal direction, its resistance to tensile stress in the vertical direction is not large, and it can be peeled off.

Therefore, the artificial turf layer formed by the construction method of the present invention is
Peeling is possible between the base surface and the lower support layer, and also between the lower support layer and the artificial grass-support layer.

In addition, in the artificial turf adhesive installation method of the present invention, since a support layer made of two layers of synthetic resin foam is interposed on the back side of the artificial turf, elasticity is imparted to the entire artificial turf, and the base layer is Between the surface and the base support layer and between the lower support layer and the artificial grass support layer,
Because it is partially glued with adhesive, for example, when athletes such as baseball players exercise on artificial turf,
When horizontal stress is applied by spikes,
There is no displacement of the adhesive part, and even if displacement occurs in the artificial turf support layer of the non-adhesive part, the displacement naturally recovers when the stress is removed by the player's movement. Furthermore, since the applied horizontal impact is dispersed and absorbed between the artificial turf support layer and the lower support layer, it also has the effect of mitigating the impact received by the players. Furthermore, the two support layers made of synthetic resin foam on the back side of the artificial turf and the air existing between the support layers have an air cushion effect. In this way, the elastic force of the artificial turf based on the displacement and natural recovery of the artificial turf, together with the elastic force of the synthetic resin foam on the back side of the artificial turf, helps to prevent players from feeling fatigued.

The holes provided in the two support layers also provide the artificial turf with breathability and drainage.

(Example) The adhesive construction method for artificial turf according to the present invention will be described in more detail below with reference to the drawings.

FIG. 1 is a cross-sectional view of the tufted artificial turf of the present invention applied adhesively onto a base surface of concrete, asphalt, etc., and each layer is schematically shown.

1 in the figure is the one previously filed by the present inventor as a water-permeable tufted artificial turf (Japanese Patent Laid-Open No. 59-47469).
No.), pile yarns 3 forming a grass-like surface are tuft-woven on a plain-woven base fabric 2 having an opening of 1 to 5 mm square, and are entangled with the yarns constituting the base fabric to form a pile yarn. Both the protruding component portion 4 and the plain woven base fabric 2 are entirely resin-processed and are fixed together to provide water permeability.

In the present invention, such tufted artificial grass 1 is adhesively applied onto the surface of a base 5 such as concrete or asphalt. First, on the back side of the artificial grass 1,
A support layer 7 made of a synthetic resin foam and having holes 6 everywhere is adhered to form a laminate 8 consisting of an artificial grass-support layer.

Next, an asphalt rubber adhesive 9, etc. is applied at desired intervals on the surface of the base 5, such as concrete or asphalt, on which artificial turf is to be adhesively installed, and then a synthetic resin foam is applied on top of this. A lower support layer 10 having holes 6, .

Asphalt rubber adhesive in this case 9,...
For example, the width of the artificial turf to be glued is about 2 m, so the 2 m
It is best to apply adhesive to the gaps in a checkerboard pattern at intervals of .

As described above, the lower support layer 10 is placed on the surface of the base 5 such as concrete or asphalt,
After adhesively bonding and forming the lower layer 11, a polyacrylic acid ester adhesive 12,... is applied to the upper surface of the lower support layer 10, and artificial turf is applied on top of this.
A laminate 8 serving as a support layer is placed and integrally adhered with adhesive.

In this case, the application method of the polyacrylic acid ester adhesive 12,... is similar to the application method of the asphalt rubber adhesive described above.
It is convenient to apply the adhesive to the gaps in a checkerboard pattern at m intervals since the lower support layer, which is made of synthetic resin foam and has holes throughout, is about 2 m wide. be.

As described above, adhesive construction of artificial turf on the base surface such as concrete or asphalt is completed. A perspective view of a support layer 7 and a lower support layer 10 having holes here and there is shown. That is, each of the support layers 7, 10 is formed by impregnating and foaming a synthetic resin such as polyvinyl chloride into a woven fabric 14 having coarse pores 13, . . . made of polyester fibers as shown in FIG. 3, for example. can be manufactured. Therefore, each of these support layers 7, 10 has an appropriate thickness (preferably
0.5 to 1.5 cm), and holes 6, . Note that the double-sided adhesive tape may be provided with a large number of small holes in order to ensure water permeability in this portion as well.

(Effects of the Invention) The artificial turf produced by the construction method of the present invention is dimensionally stable because the artificial turf - the support layer, the lower support layer, and the base surface are all bonded with adhesive. It has excellent properties and does not have the disadvantage of being left as it is, with horizontal displacement of the lawn caused by competitive activities, etc., as in the case of simply placing the lawn without adhesive. The adhesion between the base surface and the lower support layer and between the lower support layer and the artificial turf-support layer are all adhesive adhesives, and therefore the vertical tension Since the stress resistance is not large and it can be peeled off, it can be peeled off between the base surface and the lower support layer, and between the lower support layer and the artificial turf support layer. Yes, when the artificial turf becomes worn and needs to be replaced, only the defective artificial turf support layer can be peeled off from the lower support layer and only that part can be repaired.
Alternatively, if the lower support layer or foundation needs to be repaired, the defective lower support layer portion can be peeled off from the underlying surface and the lower support layer or foundation in that area can be repaired.

Polyacrylic ester-based adhesives are particularly used for adhesive bonding between the support layer and the lower support layer of artificial turf, but polyacrylic ester-based adhesives are At the same time, the plasticizer contained in the synthetic resin foam may bleed onto the surface of the synthetic resin foam layer. Even if it comes out,
As a result, the adhesive property is not inhibited and the adhesive property is maintained for a long period of time, so it is particularly excellent as an adhesive between synthetic resin foam layers.

In addition, asphalt rubber-based adhesives exhibit good adhesion to both the underlying surface of concrete, asphalt, etc., and synthetic resin foam layers (polyacrylate rubber-based adhesives are suitable for concrete, asphalt, etc.) ) It is suitable as an adhesive between the lower support layer and the underlying surface.

In addition, because a support layer made of two synthetic resin foams is interposed on the back side of the artificial turf, elasticity is imparted to the entire artificial turf, and between the base surface and the lower support layer, and between the Since the turf and support layer are partially bonded with an adhesive, the adhesive part will not displace horizontally when stress is applied in the horizontal direction due to competitive activities, etc. This has the advantage that the displacement of the non-adhesive part, combined with the elasticity of the synthetic resin foam on the back side of the artificial turf, does not cause players to feel fatigued, and that the displacement naturally recovers as the player moves. Additionally, the holes provided in the two support layers ensure the water permeability and air permeability of the lawn itself.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the artificial turf adhesive construction method of the present invention, FIG. 2 is a perspective view of a support layer, and FIG. 3 is a view of a coarsely woven fabric interposed in the support layer. 1... Tufted artificial turf, 5... Substrate of concrete, asphalt, etc., 7, 10... Support layer, 9
... Asphalt rubber adhesive, 12... Polyacrylic acid ester adhesive, 6... Hole.

Claims (1)

[Scope of Claims] 1. Formed from pile yarn by tuft-weaving pile yarn forming a grass-like surface onto a plain-woven base fabric having an opening of 1 to 5 mm square and intertwining it with the yarns constituting the base fabric. In a method of adhesively applying water-permeable tufted artificial turf, which is integrally fixed by resin-processing both the protruding constituent parts and the plain-woven base cloth, onto a base surface such as concrete or asphalt; on the back side of the artificial turf, An artificial turf-supporting layer is formed by adhering a support layer made of synthetic resin foam that has holes throughout, and the asphalt is applied onto the base surface of concrete, asphalt, etc. on which the artificial turf is to be adhesively installed. A rubber-based adhesive is applied partially, and then a lower support layer made of synthetic resin foam with holes everywhere is placed on top of it, adhesively adhered to the base, and then the lower support layer is After partially applying a polyacrylic acid ester-based adhesive on the upper surface of the layer, the artificial grass-supporting layer was placed on top of the layer and integrally adhered with adhesive. Adhesive construction method for grass. 2. The artificial turf adhesive construction method according to claim 1, wherein the synthetic resin foam adhered to the back surface of the artificial turf is polyvinyl chloride. 3. The support layer according to claim 1 or 2, wherein the support layer made of a synthetic resin foam adhesively adhered to the back side of the artificial turf has a woven fabric made of polyester fiber interposed therein. Artificial grass adhesive construction method. 4. The artificial turf according to claim 1, wherein the asphalt rubber adhesive applied to the base surface of concrete, asphalt, etc. is a double-sided adhesive tape made of a nonwoven fabric impregnated with an asphalt rubber adhesive. Adhesive construction method. 5. The artificial turf adhesive construction method according to claim 1, wherein the synthetic resin foam constituting the lower support layer is polyvinyl chloride. 6. The artificial turf adhesive construction method according to claim 1 or 5, wherein a woven fabric made of polyester fiber is interposed inside the lower support layer. 7. The polyacrylic acid ester adhesive applied to the upper surface of the lower support layer is a double-sided adhesive tape made by impregnating a nonwoven fabric with the polyacrylic adhesive or by coating both sides of a plastic film with the adhesive. An artificial turf adhesive construction method according to claim 1. 8. The artificial turf adhesive construction method according to claim 1 or 4, wherein an asphalt rubber adhesive is applied in a checkerboard stripe pattern at intervals of 0.5 to 2 m on a base surface of concrete, asphalt, etc. 9. The artificial turf adhesive construction method according to claim 1 or 7, wherein a polyacrylic ester adhesive is applied in a checkerboard pattern on the upper surface of the lower support layer.