JPH1037120A - Adhesion method of artificial lawn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhesion method of an artificial lawn in which adhesive can be spread on an elastic member or a backing with a proper quantity so as to hardly permeate, and adhesion having optimum peel strength can be realized. SOLUTION: Adhesive 5 is sprayed onto a backing 3 obliquely drop-likely by means of an adhesive jet gun 4. A major quantity of adhesive 5 sprayed drop-likely is left on the backing 3, even though a part of it permeates the backing 3. Hence, when the base plate 2 is pressed against the bed in the Z- direction, the adhesive 5 is spread on the adhesive face and extended over the whole adhesive face between the backing 3 and the base cloth 2, and the base cloth 2 adheres to the backing 3 by proper strength so as to be hardly peeled off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial turf bonding method suitable for a relatively small place such as a building, a roof of a house or various facilities, and more particularly, to an artificial turf element comprising a pile and a base cloth which is an elastic member. The present invention relates to a method for bonding artificial turf, which can be applied in an appropriate amount on a lower ground such as an upper floor or a floor, and can be applied so that an adhesive does not easily penetrate into a base.

[0002]

2. Description of the Related Art As shown in FIG. 7, an artificial turf has an artificial turf element 20 composed of a turf leaf element called a pile 1 and a base cloth 2 on which the pile 1 is planted. . The artificial turf element 20 may be laid directly on the ground, but in a ball game field or the like, an artificial turf with an underpad in which an elastic member such as a foam resin is bonded to the back surface of the base cloth 2 of the artificial turf element 20 is used. This artificial turf with underpad is used and is laid on a base such as asphalt concrete. In the artificial turf with an underpad, the elastic member is interposed between the ground and the base cloth 2, so that even if a vigorous exercise is performed on the artificial turf element 20, the impact given to the human body can be reduced.

The elastic member to be bonded to the back surface of the base cloth 2 is made of a foamed resin such as a foamed vinyl chloride resin or the like, or is formed on a fiber woven fabric of polyester or the like. Is formed in a hemispherical shape. The plate-like foamed resin is manufactured by placing a foaming paste on a flat surface such as a plate surface and foaming.

The elastic member 7 in which the foamed resin is formed in a hemispherical shape is manufactured by a method shown in FIGS. First, as shown in FIG. 6A, a fiber woven fabric 32 such as polyester woven in a checkered pattern is formed, and a foaming paste is placed on the fiber woven fabric 32. Part of the foaming paste falls off from the stitches 33 of the fiber woven fabric 32, and the foaming paste left on the checkered fiber woven fabric 32 is heated and foamed, as shown in FIG.
A large number of hemispherical foamed resins 31 are formed in a state of being attached to the fiber woven fabric 32.

[0005] The artificial grass with an underpad having the elastic member 7 bonded to the back surface has a small impact on the human body even when a heavy exercise is performed on the grass. In addition, since the elastic member 7 has water permeability that allows water to easily penetrate from between the foamed resins 31, drainage is improved. In addition, a porous ground such as asphalt concrete is formed on an installation surface where the artificial grass is installed outdoors such as a stadium, so that rainwater can easily permeate the asphalt concrete.

When the place where the artificial turf is to be laid does not require drainage such as indoors, the plate-like foamed resin is mainly used as an elastic member joined to the back surface of the base cloth of the artificial turf element. Used. The elastic member 7 having a hemispherical foamed resin 31 as shown in FIG. 7 or the elastic member made of a plate-shaped foamed resin is adhered to the back surface of the base fabric 2 of the artificial turf element 20 using an adhesive. The bonding operation may be performed in a factory using a bonding device, or the artificial turf element 20 and the elastic member may be carried into the laying site and bonded together at the laying site. The bonding operation performed in the factory can be performed automatically using a bonding device,
Even if the artificial grass is relatively large in area, the artificial grass element 2
There is an advantage that uniform bonding between the elastic member and the elastic member can be performed. Therefore, it is suitable for bonding artificial grass used in large-scale facilities such as a baseball field.

[0007] On the other hand, the bonding work at the site is performed in a relatively narrow place such as the roof of a general household or the roof of a building, in accordance with the shape of the site, or in accordance with the condition of a ground such as a floor surface at the site. It is suitable for the case of laying by judging whether or not to use an elastic member. Further, in the field work, it may be determined whether the elastic member bonded to the back surface of the artificial turf element 20 should be bonded to the floor or the ground or not.

Conventionally, a bonding operation as shown in FIG. 7 has been performed at a laying site. The adhesive 10 is applied on a porous base material 3 of, for example, asphalt concrete using a comb iron 12 or the like. Then, the elastic member 7 composed of the hemispherical foamed resin 31 and the fiber woven fabric 32 is pressed on the base 3, or the elastic member formed of the plate-like foamed resin is pressed on the base 3. In the case of laying an artificial turf without using an underpad, the artificial turf element 20 is laid directly on the surface of the groundwork 3 and crimped. In the case of an artificial grass with an under pad, the adhesive between the ground 3 and the elastic member 7 is sufficiently dried before the elastic member 7
The adhesive 11 is applied thereon using a comb iron 12 or the like, and the artificial turf element 20 is pressed onto the elastic member 7.

[0009]

However, a comb iron 12
In the method of applying an adhesive on the elastic member 7 or the base 3 using a method such as described above, the following problem occurs. (1) The underlayer 3 of asphalt concrete or the like is porous, but if the adhesive 10 is widely and uniformly applied using a comb iron 12 or the like, the adhesive 10 also covers the holes of the underlayer 3. Since the adhesive is applied, the probability of the adhesive flowing down into the holes of the base 3 increases, and the amount of the adhesive 10 that can contribute to actual bonding on the surface of the base 3 decreases. When gluing the artificial grass with the under pad on the ground 3,
Since the elastic member 7 (or plate-like elastic member) is heavy, it is sufficient to fix it with a relatively small amount of adhesive.
When the artificial turf element 20 is directly adhered to the surface of the turf, the amount of the adhesive 10 contributing to the adhesion becomes small, and the artificial turf element 20 cannot be adhered with sufficient strength.

(2) When the base material 3 is hard to penetrate the adhesive such as concrete or wood,
Contrary to the above (1), if the adhesive 10 is applied using a comb iron 12 or the like, the applied amount becomes too large. For example, when the artificial turf element 20 is directly adhered on the base 3,
Excess adhesive 10 permeates the base fabric 2 of the artificial turf element 20 and oozes out on the surface of the base cloth 2, causing problems such as stickiness of the surface of the artificial turf element.

(3) When an adhesive is applied to the elastic member 7 having the hemispherical foamed resin 31 shown in FIG. A large amount of the adhesive 11 flows down, and the adhesive 11 remaining on the elastic member 7 and contributing to adhesion
And the artificial turf element 20 cannot be bonded with sufficient strength. In addition, since the amount of the adhesive 11 flowing down the elastic member 7 is increased, an excessive amount of the adhesive 10 is interposed between the foamed resin 31 of the elastic member 7 and the base 3, and the elastic member 7 and the base 3 are unnecessary. There is also a problem that it is adhered to the surface.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and can be applied in an appropriate amount so as to prevent the adhesive from penetrating onto an elastic member or a substrate, and to provide an adhesive having an optimum peel strength. The purpose is to provide a feasible artificial grass bonding method.

[0013]

According to the method of bonding an artificial turf of the present invention, an adhesive is sprinkled on a substrate in the form of droplets, and an artificial turf element comprising a pile and a base cloth or a back surface of the artificial turf element is provided. An elastic member provided is pressure-bonded on the base.

Alternatively, the adhesive is sprayed on the elastic member in the form of droplets, and an artificial turf element composed of a pile and a base cloth is pressed on the elastic member.

In the above, the droplet of the adhesive has a diameter of 1 m.
m and 20 mm or less, and preferably, the viscosity of the adhesive at 25 ° C. is 5,000 c
It is equal to or more than ps and equal to or less than 50,000 cps.

In the present invention, the adhesive is sprayed on the surface of the base in the form of droplets, and the artificial turf element is pressed and adhered and fixed on the base, or the elastic member is pressed and bonded and fixed on the base. You. Alternatively, the adhesive is sprayed on the elastic member in the form of droplets, and the artificial turf element is pressed thereon and bonded and fixed. As shown in FIG. 6 (B), the elastic member may be made of a fiber woven fabric 32 with a hemispherical foamed resin 31 fixed thereto, or a plate-like foamed resin.

In the present invention, the viscosity at 25.degree.
An adhesive having a relatively high viscosity of not less than 00 cps and not more than 50,000 cps is used, and is formed into droplets having a diameter of not less than 1 mm and not more than 20 mm by using an adhesive spray gun shown in FIG. The application amount of the adhesive is about 300 g / m ² or more and about 1200 g / m ² or less.

The adhesive is not applied uniformly as in the application with the comb iron 12 shown in FIG. 7, but as shown in FIG. It is scattered to be scattered.

Therefore, when the base material is porous, such as asphalt concrete, the probability that the scattered adhesive droplets flow (permeate) into the holes of the base material can be reduced. The probability that a large amount of adhesive remains on the hole increases, and even if a droplet is formed right above the hole and a part of the adhesive permeates into the hole, the adhesive easily remains on the hole. Therefore, an appropriate amount of the adhesive remains on the porous substrate. Therefore, when the artificial turf element or the elastic member is pressed on the base, the adhesive remaining in the form of droplets on the surface of the base spreads in the direction of the bonding surface, thereby enabling bonding with an appropriate strength.

In addition, when the adhesive is not impregnated, such as concrete or wood, as the base material, the adhesive is sprayed in the form of droplets, and the spray amount is 300 g / m ² or more and 1200 g / m ^2. When it is less than the above, the amount of the adhesive remaining on the surface of the base becomes appropriate. Therefore, when the artificial turf element or the elastic member is pressed on the surface of the base and the adhesive in the form of droplets is spread and spread, the amount of the adhesive that contributes to the adhesion becomes appropriate.

Further, when the elastic member is made of a fiber woven fabric 32 and a hemispherical foamed resin 31, as shown in FIG. The adhesive sprayed in the form of drops is appropriately scattered on the fiber woven fabric 32 and remains. Further, there is an adhesive that falls from the stitch 33, but this is limited to only a small amount of the adhesive in the form of droplets that are scattered, and a comb iron 12 is used as shown in FIG. The amount of the adhesive flowing down to the lower surface of the elastic member 7 can be restricted as compared with the application.

Therefore, the artificial turf element can be adhered with sufficient adhesive strength by the adhesive scattered on the fiber woven fabric 32, and the foamed resin of the elastic member and the base are unnecessarily adhered by the excessive adhesive. Is also gone.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a partial cross-sectional view showing an artificial lawn bonding method according to a first embodiment of the present invention. In this example, a bonding method in which the base fabric 2 of the artificial turf element 20 is semi-permanently bonded to the base 3 is shown. 1 is a lawn leaf element called a pile. The pile 1 is a synthetic resin such as a vinylidene chloride-based resin, a polyamide-based resin, and a polypropylene-based resin. Among them, vinylidene chloride-based resin is the most preferable material having strong stiffness and excellent in water resistance and weather resistance. The pile 1 is bent into a U-shape and planted on the base cloth 2, and the pile 1 and the base cloth 2 form an artificial turf element 2.
0 is configured. In addition, pile 1
Is about 13 mm, for example.

The base fabric 2 supporting the pile 1 is formed by weaving a synthetic resin fiber such as a polypropylene resin or a polyethylene terephthalate resin into a stitch shape. The pile 1 is attached so as to close the stitches of the base cloth 2. Usually, the number of piles 1 woven in a pair of stitches is about ten and several. After the pile 1 is planted on the base fabric 2, an adhesive resin called a backing resin is coated from the back side of the base fabric 2, so that the pile 1 is fixed so as not to come off. When the laying place is outdoors, the base 3 is a water-permeable porous base such as asphalt concrete. Since such a porous substrate is permeable, rainwater does not collect on the floor surface and drainage is good.

Reference numeral 4 in the drawing denotes an adhesive spray gun for spraying the adhesive 5 in the form of droplets on the base 3. The adhesive spray gun 4 will be described below with reference to an enlarged sectional view of the adhesive spray gun shown in FIG. First, the adhesive 5 is sent in the direction of arrow A by the pump 21, and the compressed air is sent in the direction of arrow B by the compressor 22. When the trigger 23 is pulled in the direction C by a human hand, the ON-O connected to the trigger is turned on.
The FF spindle valve 24 moves in the direction C, and the nozzle 25 opens as shown in the figure. In this state, the compressed air is ejected from the nozzle 25, and the adhesive 5 is pushed out of the orifice 26 by the pressure of the compressed air.

The particle size of the adhesive extruded from the orifice 26 depends on the diameter of the orifice 26 and the diameter of the nozzle 25.
And the orifice 26. Further, by changing the setting of the nozzle gap 27, the ejection area of the adhesive ejected from the orifice 26 changes. The adhesive spray gun 4 used in the bonding method of the present invention can be used with one hand, and the person using the adhesive spray gun 4 only needs to spray the adhesive while standing. In addition, on-site construction is easy.

In the present invention, the diameter of the orifice 26 of the adhesive spray gun 4 and the nozzle gap 27 are adjusted,
The adhesive 5 is set to be in the form of droplets having a diameter of about 1 mm to 20 mm. If the diameter of the droplets of the adhesive 5 is too small, the adhesive 5 easily penetrates into the porous substrate 3, and the amount of the adhesive 5 remaining on the surface of the substrate 3 decreases. When the base fabric 2 is pressed against the base 3, the amount of the adhesive 5 spread on the bonding surface becomes minute, and the bonding strength cannot be secured. If the diameter of the droplets of the adhesive 5 to be sprayed is too large, the amount of the adhesive remaining on the surface of the base 3 becomes excessive, and when the artificial turf element 20 is pressed, the base cloth 2
A large amount of the adhesive penetrates into the inside and leaches into the surface of the base fabric 2, causing problems such as stickiness on the surface of the artificial turf element 20. If the diameter of the adhesive droplets is too large and the amount of the adhesive applied to the surface of the base 3 is too large, the water permeability of the porous base 3 will be impaired.

In order to provide an appropriate amount of the adhesive 5 to the surface of the base 3 as described above, the amount of the adhesive applied must be 30.
It is preferably in the range of 0 g to 1200 g / m ² .
Further, in order for the applied adhesive to form droplets on the application surface, it is better that the viscosity is relatively high, and preferably 25 ° C.
If the viscosity of the adhesive at 5,000 cps or more is 50,
000 cps or less. Further, it is preferable that the property of the adhesive 5 is flame retardant. The adhesive spray gun 4 is used with a slight inclination as shown in FIG. This is because, since the base 3 is porous, when the adhesive 5 is sprayed from the direction perpendicular to the base 3, the adhesive easily falls into the holes of the base 3 and the adhesive remaining on the base 3 This is because the amount of the agent is small and the adhesive strength is reduced.

Since the adhesive 5 is scattered on the surface of the porous substrate 3 so as to be scattered in the form of droplets, the probability that the adhesive 5 is placed on the holes on the surface of the substrate can be reduced. The amount of the adhesive that can contribute to the adhesion on the surface of can be appropriately secured.
When the droplet of the adhesive 5 is located on the hole of the base 3,
The adhesive 5 gradually penetrates into the holes as time passes. However, since the adhesive 5 in the form of droplets has a height, only a part of the adhesive 5 permeates into the base 3 even after a lapse of time, so that an appropriate amount of the adhesive 5 Will remain on the base 3, and sufficient adhesive strength can be maintained.

The adhesive 5 formed in the form of droplets is pressed and stretched by the Z-direction pressure of the base cloth 2 when the base cloth 2 is pressure-bonded to the base 3 using a roller or the like. As a result, the adhesive is uniformly applied to the entire surface of the bonding surface between the base 3 and the base cloth 2, and the base 3 and the base cloth 2 can be firmly bonded to each other.

FIG. 2 is a partial sectional view showing an artificial lawn bonding method according to a second embodiment of the present invention. In this example, a method of bonding the base cloth 2 of the artificial grass and the elastic member 7 is shown. In the embodiment shown in FIG. 2, an elastic member 7 in which a foam resin 31 such as a foamed vinyl chloride resin is formed in a hemispherical shape on a fiber woven fabric 32 is used.

The method of forming the elastic member 7 is shown in FIG.
This is as shown in (B). In this elastic member 7, a fiber woven fabric 32 of polyethylene or the like is woven in a checkered pattern, and a foam paste is placed on the surface of the fiber woven fabric 32. A part of the foaming paste falls off the stitches 33 and the fiber woven fabric 32
The foaming paste left on the top is heated and foamed to form a hemispherical foamed resin 31.

The elastic member 7 is easily permeable to water between the hemispherical foamed resin 31 and the stitches 33 and is water-permeable.
Therefore, the elastic member 7 is suitable when an artificial lawn is laid outdoors. When the elastic member does not need to be water-permeable as in the case where artificial grass is laid indoors, an elastic member formed of a foamed resin in a plate shape may be used. The foamed vinyl chloride resin used in the present invention is preferably used because of its flame retardancy and excellent flexibility. Further, as another foamed resin material, a foamed urethane resin may be used. By using such an elastic member made of resin or rubber, it is possible to reduce the weight burden on the feet when a person exercises on artificial grass.

Reference numeral 6 in FIG. 2 denotes a flame-retardant adhesive formed in the form of droplets. The diameter of the adhesive droplets is 1-20m
It is preferable that the coating amount is in the range of 300 to 1200 g / m ² . Then, the adhesive 6 is sprayed on the elastic member 7 by the adhesive spray gun 4. At this time, by using the adhesive spray gun 4 with a slight inclination, the adhesive 6 is likely to remain on the elastic member 7 and a sufficient adhesive force can be obtained.

An adhesive 6 having a relatively high viscosity is provided on the elastic member 7.
Is sprayed in the form of droplets, the adhesive 6 is likely to remain in the form of droplets on the fiber woven fabric 32, and an appropriate amount of adhesive can be applied to the fiber woven fabric 32 of the elastic member 7. it can. There is also an adhesive that falls down through the stitches 33, but the amount thereof is relatively small, so that the excess adhesive does not adhere to the hemispherical foam resin 31 of the elastic member 7. In order to leave as much adhesive 6 as possible on the surface of the fiber woven fabric 32, it is preferable to use the adhesive spray gun 4 with a slight inclination as described above.

The adhesive 6 remaining on the fiber woven fabric 32
Gradually penetrates into the fiber woven fabric 32 over time. However, since the adhesive 6 has a relatively high viscosity and is in the form of droplets, a part of the adhesive 6
Even if it penetrates inside, a large amount of adhesive remains on the surface of the fiber woven fabric 32, and an appropriate amount of adhesive necessary for bonding comes to remain.
When the base cloth 2 is pressed from the Z direction as shown in FIG. 2 onto the elastic member 7 on which the adhesive 6 is sprayed, the adhesive 6 is pushed and spread uniformly on the surface of the elastic member 7. ,
The base cloth 2 and the elastic member 7 are bonded with an appropriate strength.

FIG. 3 is a partial sectional view showing an artificial lawn bonding method according to a third embodiment of the present invention. In this example,
The artificial turf in which the base cloth 2 of the artificial turf element 20 and the elastic member 7 are bonded by the adhesive 8 is semipermanently bonded by the adhesive 9 on the base 3 of a porous base such as asphalt concrete. The bonding method in the case is shown. For example, the base cloth 2 and the elastic member 7 of the artificial turf element 20 are previously bonded to the adhesive 8 using an adhesive device provided in a factory or the like.
Adhered by Alternatively, the artificial turf element 20 and the elastic member 7 may be bonded at the installation site.

In FIG. 3, the adhesive 9 in the form of droplets is sprayed on the base 3 by the adhesive spray gun 4. However, as in the embodiment shown in FIG. An amount of the adhesive 9 remains, and the elastic member 7 and the base 3 are appropriately bonded by the adhesive 9. In addition, when the elastic member 7 is installed on the ground 3, the elastic member 7 has a large weight, so that the stability of the artificial grass is good. Therefore, the adhesive strength between the elastic member 7 and the base 3 in this case may be such that peeling can be prevented.
The application amount of the adhesive 9 in the embodiment shown in FIG. 1 may be smaller than that in the example shown in FIG.

The adhesive 9 in FIG. 3 is flame-retardant and is the same as the adhesive shown in FIGS. 1 and 2 and has a viscosity of 5,0 at 25 ° C.
00 to 50,000 cps, droplet diameter is 1 mm to 20
mm. The coating amount is similarly 300 to 1200 g /
m ² , but may be relatively small as described above. When the adhesive 9 is sprayed on the base 3, it is preferable to use the adhesive spray gun 4 with a slight inclination.

FIG. 4 is a partial sectional view of an artificial lawn bonding method showing a fourth embodiment of the present invention. In this example, when the artificial lawn having the elastic member 7 is semi-permanently bonded to the ground 3, the bonding between the base cloth 2 and the elastic member 7 is performed in a place where the artificial lawn is laid. .
That is, the embodiment of FIG. 4 is a combination of the embodiments of FIGS. 2 and 3 of the present invention. First, the adhesive 9 in the form of droplets is sprayed on the base 3 by the adhesive spray gun 4 in an oblique direction. Next, when the elastic member 7 is pressed in the Z direction, the adhesive 9 is pushed and stretched, and the elastic member 7 and the base 3 are bonded with an appropriate strength. After the adhesive 9 is sufficiently dried, the adhesive 6 in the form of droplets is sprayed on the elastic member 7 by the adhesive spray gun 4 in an oblique direction. Next, the base cloth 2 is pressed in the Z direction, and the adhesive 6 is stretched and spread on the surface of the elastic member 7, so that the base cloth 2 and the elastic member 7 are also firmly bonded. In this case, the conditions such as the viscosity, the particle size, and the amount of the adhesive to be sprayed are the same as those in the embodiment shown in FIGS.

[0041]

According to the present invention described in detail above, when the artificial grass is adhered to the ground or the base cloth constituting the artificial grass element and the elastic member by the adhesive, the adhesive is in the form of droplets. , An appropriate amount of adhesive can be applied to the bonding surface, and an optimum bonding operation can be performed.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing an artificial grass bonding method according to a first embodiment of the present invention;

FIG. 2 is a partial cross-sectional view illustrating a method of bonding an artificial lawn according to a second embodiment of the present invention;

FIG. 3 is a partial cross-sectional view illustrating a method of bonding an artificial lawn according to a third embodiment of the present invention;

FIG. 4 is a partial cross-sectional view illustrating a method of bonding an artificial lawn according to a fourth embodiment of the present invention;

FIG. 5 is an enlarged sectional view of an adhesive spray gun according to the present invention;

FIG. 6 shows a method for producing a porous elastic member,
(A) is a perspective view of a resin woven fabric, (B) is a cross-sectional view of an elastic member,

FIG. 7 is a partial sectional view showing a conventional artificial lawn bonding method;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pile 2 Base cloth 3 Base 4 Adhesive spray gun 5, 6, 8, 9, 10, 11 Adhesive 7 Elastic member

Claims (4)

[Claims] 1. An adhesive is sprayed on the lower ground in the form of droplets, and an artificial turf element comprising a pile and a base cloth or an elastic member provided on the back surface of the artificial turf element is pressed on the base. An artificial grass bonding method characterized by the following. 2. An artificial turf bonding method according to claim 1, wherein an adhesive is sprinkled on the elastic member in the form of droplets, and an artificial turf element composed of a pile and a base cloth is pressed on the elastic member. 3. An adhesive having a diameter of 1 mm or more and 20
The artificial grass lawn bonding method according to claim 1 or 2, wherein the thickness is not more than mm. 4. An adhesive having a viscosity at 25 ° C. of 5,000
2. The method according to claim 1, wherein the speed is from 0 cps to 50,000 cps.
4. The method for bonding artificial grass according to any one of claims 3 to 3.