JP2511925Y2 - Artificial grass - Google Patents

Description

TECHNICAL FIELD The present invention relates to an artificial lawn in which monofilaments made of synthetic resin are planted so as to form a large number of piles on the surface of the ground tissue.

2. Description of the Related Art Conventional Art and Problems There are various proposals for artificial lawns in which a large number of cut piles or loop piles are formed on the ground structure depending on the application. In recent years, an artificial lawn for forming a court or a ground for playing sports such as tennis, baseball, soccer, rugby, etc., in which flat monofilaments are planted to form a cut pile is often used. This artificial lawn is placed on the ground surface and appropriately fixed, and as shown in FIG. 6, sand is put between the flat monofilaments (51) to form a sand layer (52) on the ground structure, and the flat grass is formed. The tip portion (51 ') of the monofilament (51) is made to project from the sand layer (52).

The ground, coat, etc. formed in this way are
In a conventional artificial lawn without sanding, no lines appearing in the weaving direction of the cut pile are seen, and an appearance like natural grass is obtained, which is extremely excellent.

However, in the ground, coat, etc. using the above-mentioned artificial lawn, as shown in FIG. 7, the flat monofilament tip (51 ') falls in the thickness direction due to contact with the sole (53) of the player. Therefore, there is a problem that the shoe sole (53) is slippery (see FIG. 8). In the artificial lawn, since the flat monofilament (51) forming the cut pile has a small thickness, the protrusion (5) of the flat monofilament (51) from the sand layer surface is formed.
1 ') wears off at the tip or breaks from the middle in a relatively short period of time due to the wear caused by the above contact. As a result, the appearance of the natural grass described above is impaired, and the sand in the sand layer (52) is also blown off by the wind. Therefore, the artificial lawn must be replaced in a relatively short period of time, and improvement has been desired.

An object of the present invention is to solve the above problems and provide an artificial lawn that is less slippery than conventional artificial lawns and is excellent in wear resistance.

Means for Solving the Problems The above-mentioned object of the present invention is to fabricate a large number of piles in a state in which a plurality of flat monofilaments and filament monofilaments having a diameter larger than the thickness of the flat monofilaments and smaller than the width are bundled. This is achieved by an artificial lawn characterized by being planted to form on the surface.

It is preferable that the flat monofilament and the filamentous monofilament have substantially the same fineness.

Further, when the total fineness of the flat monofilaments in the bundled state is 1, the total fineness of the filamentous monofilaments of the bundle is preferably in the range of 0.2 to 5.

In the present specification, as the flat monofilament and the filamentous monofilament, those conventionally used for this kind of artificial lawn can be used in a wide range, for example, nylon resin, polypropylene resin, vinyl chloride resin, polyethylene resin and the like can be exemplified. Polypropylene resin can be mentioned as a preferable example.

Further, in the present specification, as the flat monofilament, a split yarn in which a large number of cuts are provided in the longitudinal direction of the strip-shaped sheet, or a flat monofilament of a pile formed by planting a tape yarn in the ground structure is used. Shall be included. The filamentous monofilament is preferably a monofilament having a circular cross section, but may be, for example, a monofilament having a rectangular cross section or a tubular shape.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 (a) and 1 (b) show an artificial lawn according to an embodiment of the present invention. In the artificial lawn (1), a plurality of flat monofilaments (2) and filamentous monofilaments (3) having a diameter larger than the thickness of the flat monofilaments (2) and smaller than the width are bundled by being twisted and twisted. A large number of cut piles (5) on the surface of the ground structure (4) in the condition
Are planted to form. This artificial lawn (1)
In the above, the ratio of the total fineness of the flat monofilament (2) and the filamentous monofilament (3) in the bundled state is 1: 1. On the back side of the ground structure (4),
A backing process is applied, and a resin layer (6) for preventing the cut pile (5) from falling off is formed. This artificial lawn (1) is laid on a ground surface on which a coat or a ground is to be formed, and is appropriately fixed. Furthermore, only the tip end of the cut pile (5) is projected onto the surface, and the artificial grass (4) is placed on the ground structure (4). Sand is put in to provide a layer of sand and is used as a coat or ground.

Flat and thread-shaped monofilaments (2), (3)
Has a fineness of 200 denier to 1000 denier, more preferably 300 denier to 600 denier. These monofilaments (2), (3)
If the fineness is less than 200 denier, the rigidity becomes too low and the cut pile tends to fall over.If it exceeds 1000 denier, the rigidity of each cut pile is too strong and the inclination in the specific direction that appears during weaving Tend to remain, which causes directionality in the artificial grass, which is not preferable.

Since the cut pile (5) of the artificial grass (1) of the present embodiment configured as described above is composed of flat and thread-shaped monofilaments (2) and (3) as shown in FIG. Individual monofilaments (2) and (3) spread independently from the base end of the pile, and even if the pile length is short, it is possible to give a sufficient spread to the tip side. Further, FIG. 3 shows a state in which the cut pile (5) of the artificial grass (1) of the present embodiment is brought into contact with the shoe sole of the player. The artificial lawn (1) of this example has flat and thread-shaped monofilaments (2) in the cut pile laid state.
The filamentous monofilament (3) mixed with (3) has a diameter larger than the thickness of the flattened monofilament (2),
By the mutual overlapping of the thread-shaped monofilaments (3) and the flat monofilament (2),
Compared with the conventional artificial lawn having only flat monofilament (2), a surface condition with more unevenness is formed. Due to the unevenness, the player's shoe sole has an appropriate resistance against slippage, and the slipperiness of the shoe sole in the conventional artificial lawn is eliminated. The diameter of the filamentous monofilament (3) is larger than the thickness of the flat monofilament (2), and the filament monofilament (3) falls in any direction and easily rolls in the radial direction even in the lying state, so that the contact point with shoes etc. It is liable to change, and will not wear out and fall out in a short period of time. Moreover, since the flat monofilament (2) partially rests on the filamentous monofilament (3) in the fallen state, or is locked and curved,
Only the upper part of the curved surface is rubbed by the shoe sole or the like, and the curved shape changes arbitrarily depending on the lying state. Therefore, the flat monofilament (2) is not worn out in a relatively short period of time and is not lost. Therefore, based on the constitution peculiar to the present invention in which the flat monofilament (2) and the filamentous monofilament (3) are bundled to form the cut pile (5) on the surface of the ground structure (4), the artificial lawn (1) is The wear resistance of the cut pile (5) can be improved, and the artificial lawn (1) can be used for a long period of time. Here, the filamentous monofilament (3) needs to have a diameter larger than the thickness of the flat monofilament (2) and smaller than its width. If the diameter of the filamentous monofilament (3) is smaller than the thickness of the flat monofilament (2), the above effect cannot be obtained, and if it is larger than the width, an appearance like natural grass cannot be obtained.

When bundling a plurality of flat monofilaments (2) and thread-shaped monofilaments (3), each monofilament (2) and (3) is first twisted into small bundles,
It is preferable that each small bundle is put together and twisted. In addition, in order to make a good twist state and to reduce the resistance of the tufting needles when the bundled monofilaments are planted in the ground structure (4), flat and thread-shaped monofilaments (2) , (3) has a fineness
It is preferable that they are substantially the same. Furthermore, when the total fineness of the flat monofilament (2) of the bundle which is twisted is set to 1, the total fineness of the filamentous monofilament (3) of the bundle is
It is preferably in the range of 0.2 to 5, more preferably
It is 0.5 to 3. Filamentous monofilament (3) when the total fineness of the flat monofilament (2) is 1.
If the total fineness is less than 0.2, it is difficult to obtain the effect based on the combination of the filamentous monofilament (3) and the flat monofilament (2), that is, the effect of improving the wear resistance, and if it exceeds 5, the natural turf It becomes difficult to obtain such an appearance.

4 (a) and 4 (b) show an artificial lawn according to another embodiment of the present invention. As shown in the enlarged view of the pile of the artificial lawn (11) in FIG. 5, the artificial lawn (11) has a plurality of flat monofilaments (2) and filamentous monofilaments (3) in a bundle. It is implanted so as to form a large number of loop piles (15) on the surface of the tissue (4). The other points are the same as those of the artificial grass (1).
The filamentous monofilament (3) having a diameter larger than the thickness and smaller than the width of the flat monofilament (2) exhibits stronger elasticity than the flat monofilament (2).
The loop pile (15) in which the yarn upper monofilament (3) is mixed has an advantage that it has a high compression elastic modulus and is hard to fall over.

As is apparent from the above, in the artificial grass of the present invention, a plurality of flat monofilaments and filamentous monofilaments having a diameter larger than the thickness of the flat monofilaments and smaller than the width are bundled to form a large number of piles on the surface of the ground structure. Since it was planted so as to form, in the fallen state due to contact with the sole or the like, a large uneven state is formed on the artificial grass surface due to the action of the filamentous monofilament having a relatively large diameter, and the unevenness causes the sole. Etc. have an appropriate resistance against slipping, and can obtain the effect of being less slippery than conventional artificial grass. Further, in the artificial lawn of the present invention, since the area of the sliding contact portion with the shoe sole or the like in the lying state of the pile is small and the sliding contact portion is changed arbitrarily,
It is possible to obtain the effect that the monofilaments constituting the pile are not worn out in a relatively short period of time and are not lost, and the abrasion resistance is excellent.

[Brief description of drawings]

1 (a) is a vertical sectional front view showing an artificial lawn according to an embodiment of the present invention, FIG. 1 (b) is a vertical sectional side view thereof, and FIG. 2 is an enlarged perspective view of the cut pile thereof, FIG. 3 is an enlarged side view schematically showing the lying state of the cut pile,
FIG. 4 (a) is a vertical sectional front view showing an artificial lawn according to another embodiment of the present invention, FIG. 4 (b) is a vertical sectional side view thereof, and FIG. 5 is an enlarged perspective view showing the loop pile thereof. FIG. 6 is a partially longitudinal front view showing an example of a conventional artificial lawn, FIG. 7 is a longitudinal front view showing a lying state due to contact of the monofilament with the sole, and FIG. 8 is a lying state thereof. It is a side view which expands and is shown typically. (1), (11) …… Artificial grass (2) …… Flat monofilament (3) …… Thread monofilament (4) …… Ground texture (5) …… Cut pile (6) …… Resin layer (15) ...... Loop pile

Claims (3)

(57) [Scope of utility model registration request] 1. A flat monofilament and a filamentary monofilament having a diameter larger than the thickness of the flat monofilament and smaller than the width thereof are planted so as to form a large number of piles on a ground texture surface in a bundled state. An artificial lawn characterized by being 2. The artificial lawn according to claim 1, wherein the flat monofilament and the filamentous monofilament have substantially the same fineness. 3. When the total fineness of the flat monofilaments in the bundled state is 1, the total fineness of the filamentous monofilaments of the bundle is in the range of 0.2 to 5. The artificial lawn described in 2.