JPH061405U - Artificial grass - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a sand-containing artificial lawn in which the sand layer does not become tightly tightened even after long-term use and the desired softness can be maintained. [Structure] Synthetic resin filaments are planted so as to form a large number of lawn-like piles on the ground tissue, and a sand layer is formed between the filaments on the ground tissue with the tip of the lawn-like pile protruding from the surface. In the artificial lawn provided with,
A reinforcing pile formed of a synthetic resin filament is further implanted between the lawn-like piles on the ground structure, and the tip of the reinforcing pile is formed lower than the tip of the lawn-like pile and embedded in the sand layer. An artificial lawn characterized by being

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an artificial lawn (so-called artificial lawn containing sand) in which a sand layer is provided between lawn piles made of synthetic resin filaments and the tip of the lawn pile is projected from the surface of the sand layer.

[0002]

[Prior art and its problems]

 Artificial grasses in which a large number of grass-like piles are formed on the ground structure have been variously proposed according to their applications. In recent years, as an artificial lawn for forming a court or a ground for playing sports such as tennis, baseball, soccer, rugby, etc., a plurality of bundled flat monofilaments have been planted in the ground structure to produce a large number of lawn piles. The formed one is often used. In such an artificial lawn, an artificial lawn body having a large number of lawn-like piles on the ground structure is laid on the ground surface and appropriately fixed, and sand is put between the filaments of the lawn-like pile to place it on the ground structure. A sand layer is provided so that the tip of the lawn pile is projected from the sand layer.

However, in such a conventional sand-containing artificial lawn, the sand layer tends to be tightly tightened during repeated use due to long-term use, and a desirable softness as a coat or a ground. There was a problem that was lost.

An object of the present invention is to provide a sand-filled artificial lawn in which the sand layer is not tightly tightened and the desired softness can be maintained even after long-term use.

[0005]

[Means for solving the problem]

 In order to achieve the above-mentioned object, the present invention is a state in which synthetic resin filaments are planted so as to form a large number of grass-like piles on the ground structure, and the tips of the grass-like piles are projected from the surface. In an artificial lawn in which a sand layer is provided between filaments on the ground structure, a reinforcing pile formed of synthetic resin filaments is further planted between the lawn piles on the ground structure, and the tip of the reinforcing pile is The present invention provides an artificial turf characterized by being formed lower than the tip of the lawn-like pile and being embedded in the sand layer.

The term “filament” used in the present specification includes what is called a tape yarn, a slit yarn, a split yarn, a film yarn, etc. provided as a continuous yarn.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a sectional view showing an artificial lawn (1) according to one embodiment of the present invention. In the artificial lawn body (10) of the artificial lawn, a plurality of synthetic resin monofilaments (2) are bundled together and tufted on the surface of the ground structure (4) to form a large number of lawn-like piles (5). ) Are formed (the figure shows a cross section of the row by tufting). Further, between the rows of one lawn-like pile (5) of the man-made lawn body (10), a plurality of synthetic resin monofilaments (2) are planted in a bundled state to form one reinforcement pile (5). The row of 7) is formed. In this embodiment, the reinforcing pile (7) is a loop pile, in which case the loop shape of the loop pile provides elastic force to the reinforcing pile (7).

FIG. 2 is a sectional view showing an artificial lawn (1 ′) according to another embodiment of the present invention. In the artificial lawn body (10 ') of the artificial lawn, as in FIG. 1, a plurality of synthetic resin monofilaments (2) are bundled and tufted on the surface of the ground structure (4). Rows of grass-like piles (5) are formed, and a plurality of synthetic resin monofilaments (2) are bundled between the rows of one grass-like pile (5) of the artificial grass body. One row of reinforcement piles (7 ') is formed by being planted. In the embodiment, the reinforcing pile (7 ') is a cut pile. In this case, in order to increase the elastic force of the reinforcing pile (7'), the monofilament (2) made of synthetic resin constituting the cut pile is used. It is preferable to use those that have been twisted or shrunk by crimping.

In both of the embodiments shown in FIGS. 1 and 2, the length of the lawn pile (5) is appropriately selected to be 15, 20, 25 mm or the like depending on the application. Correspondingly to this, the height of the reinforcing piles (7) or (7 ') can be variously selected, but at any height (length), the tips of these reinforcing piles are more than the grass-like piles (5). It is formed low. Thus, the formation of rows of reinforcing piles (7) or (7 ') low between the rows of grass-like piles (5) is carried out as follows.

For example, in a tufting machine, tufting is divided into a cut pile row and a loop pile row, and the amount by which the loop pile needle descends through the base cloth is made smaller than the amount by which the cut pile needle descends. Moreover, if a cutting knife that operates in synchronization with the looper is applied only to the row of cutting pile needles, an artificial lawn (FIG. 1) having a loop pile reinforcing pile (7) can be formed. Further, if the cutting knife is also acted on the row of planted needles for the loop pile, an artificial lawn (FIG. 2) having a reinforcing pile (7 ') for the cut pile can be formed.

The back surface of the ground structure (4) is backed to prevent the lawn-like pile (5) from falling off to form a resin layer (6).

The artificial lawn body (10) or (10 ′) is laid on a ground surface on which a coat or a ground is to be formed and is appropriately fixed, and only the tip of the lawn-like pile (5) projects on the surface. As shown in the figure, the sand layer (3) is provided by putting sand to the position shown on the surface of the ground structure (4) (the position shown by the arrow A in the figure), and is used as artificial grass (1) or (1 '). It As described above, since the reinforcing pile (7) or (7 ') is formed lower than the height of the lawn-like pile (5), as shown in FIGS. 1 and 2, the sand layer () on the ground structure (4) ( 3) The entire reinforcing pile is embedded in.

The lawn-like pile (5) is made of synthetic resin having high weather resistance and durability such as polypropylene, polyethylene, nylon, polyester, vinylidene chloride, which are materials used for conventional artificial grass. be able to. As the material for the reinforcing piles (7) and (7 ′), natural fibers can be used in addition to the synthetic resin. As the natural fiber, hemp, jute, etc. having strong elasticity and rich elasticity are preferable. The thickness and fineness (denier) of the monofilaments that compose the lawn-like pile (5) and the reinforcing piles (7) and (7 ') may be appropriately selected and used within the range applied to conventional artificial grass. it can.

Further, in the artificial lawn (1 〃) according to another embodiment shown in FIG. 3, a reinforcing pile (7 〃) is a cut pile in which thin filaments (2 〃) of natural fibers or synthetic fibers are bundled. It is composed of and is radiated from above the ground structure (4) of the artificial lawn body (10〃). When a thin filament of synthetic fiber is used as the reinforcing pile (7 cm), a preferable elastic force can be imparted by crimping the filament in advance. The artificial lawn body (10 〃) also has the reinforcement pile (7 〃) lower than the lawn-like pile (5), and the reinforcement pile (7 〃), as in the above-mentioned embodiment (FIGS. 1 and 2). Rows are formed low between the rows of grass piles (5). Similar to the above-mentioned embodiment, sand is put into this lawn main body (10 〃) so that only the tip of the lawn-like pile (5) projects to the surface, and the sand layer (3) is located at the position indicated by arrow A in the figure. The entire reinforcement pile (7 〃) is buried in the sand layer (3).

In the artificial turf according to the embodiment of the present invention thus formed, the compressive load due to trampling is applied to the sand layer (3) and the reinforcing piles (7), (embedded in the sand layer It is also added to 7 ') and (7 〃). At this time, the sand particles in the sand layer (3) increase in density due to the compressive load, but the reinforcing piles (7), (7 '), and (7 〃) use the compressive load from the sand particles around the pile to reduce its elasticity. After receiving the deformation, and after releasing the compressive load, the elastic force of the reinforcing pile restores the shape of the pile itself and pushes back the sand layer (3). The height (A) of the sand layer shown in each figure makes effective use of the elastic force of the reinforcing piles (7), (7 '), and (7〃) so that the push-back by the reinforcing piles can be advantageously performed. In order to prevent the weight of sand added to the reinforcing pile from becoming excessive, it is preferably about 3 to 10 mm, more preferably about 3 to 10 mm, more preferably from the tip of the reinforcing pile (7), (7 '), (7 〃). It is provided about 5 mm higher.

In the artificial lawn according to the present invention having such a structure, it is possible to prevent the sand layer from being tightly tightened even after long-term use. Further, it is possible to obtain the effect of preventing a decrease in water permeability associated with the tightness of the sand layer.

Further, depending on the use of the artificial lawn, there may be a plurality of reinforcing pile rows that are planted between the lawn-like pile rows that are planted on the ground structure, or one reinforcement for each of the plurality of lawn-like pile rows. It is also possible to adjust the softness of the artificial grass with sand by providing pile rows. In this case, the artificial lawn body is manufactured by a tufting machine in which needles, loopers and knives corresponding to lawn-like pile rows and reinforcing pile rows are combined as described above.

[0018]

[Effect of device]

 In the artificial lawn according to the present invention, a row of reinforcing piles is further planted between the rows of lawn-like piles on the surface of the ground structure, the tip of the reinforcing pile is formed lower than the tip of the lawn-like pile, and the tip of the lawn-like pile is formed. It is buried in a sand layer provided with the part protruding from the surface. For this reason, the artificial lawn is prevented from being in a state where the sand layer is tightened due to the elastic force of the reinforcing pile even when it is stepped on, and maintains the desired softness for long-term use such as a coat or a ground. Can

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an artificial lawn according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an artificial lawn according to another embodiment of the present invention.

FIG. 3 is a cross-sectional view of an artificial lawn according to still another embodiment of the present invention.

[Explanation of symbols]

 1 Artificial lawn 1'Artificial lawn 1 "Artificial lawn 2 Monofilament 3 Sand layer 4 Ground texture 5 Lawn-like pile 6 Resin layer 7 Reinforcement pile 7'Reinforcement pile 7" Reinforcement pile 10 Artificial lawn body 10 'Artificial lawn body 10 "Artificial lawn body

Claims (5)

[Scope of utility model registration request] 1. Synthetic resin filaments are planted so as to form a large number of lawn-like piles on the ground tissue, and the tips of the lawn-like piles are projected from the surface between the filaments on the ground tissue. In an artificial lawn provided with a sand layer, a reinforcing pile formed of a synthetic resin filament is further planted between the lawn-like piles on the ground structure, and the tip of the reinforcing pile is lower than the lawn-like pile tip. An artificial lawn formed and embedded in the sand layer. 2. The lawn-like piles and the reinforcing piles are tufted in rows so that the rows of the reinforcing piles are formed between the rows of the lawn-like piles. The artificial lawn according to claim 1. 3. The artificial lawn according to claim 1 or 2, wherein the reinforcing pile is a filament formed of natural fibers. 4. The artificial lawn according to claim 1, wherein the reinforcing pile is a loop pile. 5. The artificial lawn according to any one of claims 1 to 3, wherein the reinforcing pile is a cut pile.