JPH04124301A - Artificial lawn - Google Patents

Abstract

PURPOSE:To provide an artifical lawn wherein, even if earth and sand are placed on the surface of grass, the earth and sand are hindered by an upper cloth so that a lower cloth is hardened by forming a base cloth wherein rachis strings are tufted, in 3 layers an upper cloth, elastic layer with void and lower cloth. CONSTITUTION:A base cloth 12, wherein rachis strings 11 are tufted, has a three-layer structure composed of an upper cloth 13, elastic layer with void 14 and lower cloth 15. The upper cloth 15 and the lower cloth 15 are connected by connecting strings 16 which are woven into the cloths 13, 15. The strings 16 are extended from the cloth 15 to the cloth 13 so that the upstanding parts 17 of the strings 16 fill the space 14 between the cloths 15, 15 so as to form an elastic layer 14 having voids. The upper cloth 13 is woven so that it has a texture looser than that of the cloth 15 to form voids 18 all over the cloth 15, wherein the rachis strings 11 are tufted from the side of the cloth 15 to form grass 19 on the surface of cloth 13.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an artificial lawn whose grass is a pile formed by tufting pile yarns as axone yarns onto a base fabric using a tufting machine.

[Conventional technology]

Artificial lawns installed in outdoor sports fields are required to have enough water permeability to allow rainwater to flow underground instead of collecting on the grass surface.

The present inventor has made an invention relating to this kind of water-permeable artificial lawn, the gist of which is tufting leaf axoneme to a coarse base fabric.
21') and Japanese Patent Publication No. 59-14812 (Special Publication No. 6l
-27510).

Another method of obtaining a water-permeable artificial lawn is to emboss grooves on the back side of the artificial lawn that will serve as waterways (1983-
46736, Japanese Utility Model Publication No. 57-133374), a method of lining the artificial lawn with a thick material that forms voids on the back side (Japanese Patent Publication No. 59-103617, Japanese Patent Publication No. 63-14)
122, Jitsugyo 60-8702, Jitsugyo 63-404
94), a method of forming voids by overlapping a fiber web on the back side of the base fabric (Utility Model Publication No. 54-32357, Utility Model Application Publication No. 57-611)
31) A method in which soluble particles are blended with a buffing agent and applied so that through holes are formed in the coating film of the puffing agent, and then dissolved and removed after the coating film is formed (JP-A-60-2332).
09 ・Kaikōhei 1-57203') A method of breaking the coating film of a backing agent by spraying a high-pressure air stream onto the coated surface of the backing agent to close the mesh of the base fabric (Japanese Patent Application Laid-open No. 57-95370, Japanese Patent Application Laid-Open No. 63-227896) ), a method of punching holes in the base fabric by inserting a needle from the back side of the artificial lawn (1986-45)
480, Utsukko Sho 53-37093), etc.

[Problem that the invention seeks to solve]

Earth and sand naturally get into the artificial grass laid in outdoor sports fields.
As shown in No. 401), artificial lawns are sometimes covered with earth and sand to make them resemble natural grass, and this earth and sand gradually penetrates deeper and hardens the base fabric.

Since earth and sand from the ground also adhere to the base cloth, the base cloth is hardened with earth and sand from above and below (front and back).

However, in golf course teeing grounds, tees are inserted from time to time, and if the base fabric is hardened with earth and sand from below, it becomes difficult to insert the tee. It can also lead to being beaten up.

[Purpose of the invention]

Therefore, the first object of the present invention is to obtain an artificial lawn that can be installed on a golf course and is easy to tee up.

A second object of the invention is to obtain an artificial lawn whose water permeability is not impaired during use.

Another object of the present invention is to obtain an artificial lawn that is resistant to sagging and does not allow turf grass to be set as it is trampled.

[Structure of the invention]

The artificial lawn 20 according to the present invention is characterized in that the base fabric 12 of the leaf axoneme 1 to be tufted is composed of three layers: an upper fabric 13, a porous elastic layer 14, and a lower fabric 15. It is something to do.

The base fabric 12 can also be constructed by stacking conventional base fabrics one above the other and sandwiching a cushioning material such as polyurethane foam between them.

However, as a method, tufted pile fabric or turf grass (pile), which is made by tufting pile on a conventional base fabric, is used.
Another method is to overlay a new base fabric on the pile (turf grass) side of a short tufted artificial grass base fabric, and then tuft it by inserting a needle with the new overlapping base fabric facing the bank stitch side. be.

However, a preferable base fabric 12 is such that the upper fabric 13 and the lower fabric 15 are joined by connecting threads 16 connected thereto, and the upper fabric 1
3 and the lower cloth 15, the connecting thread I6 is connected to one cloth 13
(1, 5) stands up and continues toward the other cloth 15 (13), and the standing portion I7 of the connecting thread 16 fills the gap (14) between the upper cloth 13 and the lower cloth 15. A forest of porous elastic layers 14 are formed.

In that case, one or several plastic monofilaments with a thickness of 100 deniers or more are used as the connecting thread 16, and the upper fabric 13 is made coarser than the lower fabric 15 so that the entire surface has an opening area of 1.
mn? The above voids 18 are formed, and the leaf axoneme 11 is placed on the lower cloth side (
Grass grass 1 is tufted from 15) to the upper fabric surface (13).
It is even better to form 9.

Such base fabric 12 can be formed by a double rough shell warp knitting machine or a moquette loom, and a cushion material consisting of a double fabric disclosed by the present inventor in JP-A-61-37214 can be used therefor.

Next, to explain in detail with reference to the drawings, the base fabric 12 has a three-layer structure of an upper fabric 13, a porous elastic layer 14, and a lower fabric 15, and the upper fabric 13 and the lower fabric 15 are woven into them. The connecting thread 16 is connected to the lower fabric 15.
The connecting threads 16 stand up and continue from the upper cloth 13 toward the upper cloth 13, and the standing portions 17 of the connecting threads 16 fill the gap (14) between the upper cloth 13 and the lower cloth 15 to form a porous elastic layer 14. The upper cloth 13 is woven more coarsely than the lower cloth 15, and the entire surface has an opening area of 1 rnn? It has the above voids 18, and the leaf axoneme 1
1 is tufted from the lower fabric side (15) to the upper fabric surface (
13), turfgrass 19 is formed.

In addition, when knitting the base fabric 12 using a double raschel warp knitting machine, the upper fabric 13 and the lower fabric 15 are knitted at the same time.
The upper fabric 3 and the lower fabric 15 are joined by knitting one or more connecting yarns 16 made of monofilaments of 100 denier or more, and the connecting yarn 16 is connected between them by knitting one of the connecting yarns 16 made of monofilaments of 100 deniers or more.
) to the other fabric 15 (13) and connect them, forming a porous elastic layer 14 in which a series of standing sections 17 stand between the upper fabric 13 and the lower fabric 15. 13 is a chain-stitched net knitted fabric having an opening (18) with an opening area of 20 mm or more, and the lower fabric 15 is a plain knitted fabric in which the chain-stitched rows that continue in the wale direction are connected with insertion yarns, and the chain-stitched rows are connected. Opening area surrounded by insertion thread 1ma? The above gaps shall be formed continuously in the wale direction and the course direction,
The leaf axoneme 11 is tufted from the lower fabric side 15 to form a grass 19 on the upper fabric surface (13).
, Utility Model Application No. 64-30389, or Utility Model Application No. 1-1452
The three-dimensional warp knitted fabric disclosed in No. 62 can also be used for the base fabric 12.

In carrying out the present invention, the conventional techniques described in the [Prior Art] column are used, for example, by making the lower cloth coarser, or by
It is also possible to break the coating film of the buffing agent that forms on the grains of the lower fabric using high-pressure air current, or to create irregularities by bonding a synthetic resin member (dowel) 21 to the back surface after backing with the backing agent.

〔Effect of the invention〕

In the artificial lawn 20 according to the present invention, the base fabric 12 on which the leaf axonemes 11 are tufted has an upper fabric 13 and a porous elasticity [14 and a lower fabric 1].
5, even when the lawn grass is covered with soil from the surface side, the soil is blocked by the upper cloth 13 and does not directly harden the lower cloth 15, so that it is easy to insert the tee, and the tee can be easily inserted. Since the base of the tee is supported vertically by the upper cloth 13 and the lower cloth 15, it is difficult to tilt and the tee is held up stably.

Furthermore, it is difficult for dirt to enter the porous elastic layer 14 between the upper fabric 13 and the lower fabric 15, and the porous elastic layer 14 forms a waterway, so an artificial lawn 20 with good water permeability and drainage properties can be obtained. .

In particular, the upper cloth 13 and the lower cloth 15 are joined by the connecting thread 16 connected thereto, and the upper cloth 13 and the lower cloth 1 are connected by the standing portion 17 of the connecting thread 16 between the upper cloth 13 and the lower cloth 15
A porous elastic layer 14 that fills the gap (14) between 5 and stands in a forest.
When forming the gap elastic layer 14, the upper fabric 13 is supported by the standing portions 17 of the connecting threads 16, resembling an underdrain, and its drainage effect as a waterway is enhanced.

Furthermore, since the grass 19 is supported halfway by the upper cloth 13, it is difficult to tilt, and the part 22 between the upper cloth 13 and the lower cloth 15
Unlike the backstitch part located on the lower side of the conventional base fabric, it has a cushioning effect.
It is possible to obtain an artificial lawn 20 in which the grass 9 is hard to buckle and has excellent cushioning properties.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway enlarged perspective view of an artificial lawn according to the present invention. 11... Leaf axoneme, 12... Base fabric, 13...
・Upper fabric, 14... Porous elastic layer, 15... Lower fabric,
16... Connecting thread, 17... Standing part, 18...
void, 19...turf grass, 20...artificial lawn, 2
1... Dowel, 22... Part.

Claims (5)

[Claims] (1) An artificial lawn characterized in that the base fabric 12 on which the leaf axonemes 11 are tufted has three layers: an upper fabric 13, a porous elastic layer 14, and a lower fabric 15. (2) The base fabric 12 to which the leaf axoneme 11 is tufted has three layers: an upper fabric 13, a porous elastic layer 14, and a lower fabric 15, and the upper fabric 1
3 and the lower cloth 15 are joined by a connecting thread 16 connected thereto, and between the upper cloth 13 and the lower cloth 15, the connecting thread 16 connects from one cloth 13 (15) to the other cloth 15 (13
), and the standing portions 17 of the connecting threads 16 fill the gap (14) between the upper fabric 13 and the lower fabric 15 to form a porous elastic layer 14. An artificial lawn characterized by: (3) The base fabric 12 on which the leaf axoneme 11 is tufted has three layers: an upper fabric 13, a porous elastic layer 14, and a lower fabric 15, and the upper fabric 1
3 and the lower cloth 15 are connected by a connecting thread 16 made of one or several plastic monofilaments having a thickness of 100 deniers or more, and the upper cloth 1
3 and the lower cloth 15, the connecting thread 16 connects one cloth 13 (
15) to the other fabric 15 (13), standing up and continuing at a substantially right angle, and the standing portion 17 of the connecting thread 16 is the gap between the multifilaments of the upper fabric 13 and the lower fabric 15 (14).
The upper fabric 13 is formed more coarsely than the lower fabric 15 and has voids 18 with an opening area of 1 mm^2 or more on the entire surface, and the leaf axoneme 11 is tufted from the lower fabric side (15) to form turf grass 19 on the upper fabric surface (13). (4) The connecting thread 1 in which the base fabric 12 to which the leaf axes 11 are tufted becomes one or several monofilaments of 100 deniers or more while simultaneously weaving the upper fabric 13 and the lower fabric 15.
6 is woven to join the upper cloth 13 and the lower cloth 15, and the connecting thread 16 connects from one cloth 13 (15) to the other cloth 1.
5 (13) and connects the raised portion 17 to the upper cloth 13 and the lower cloth 15.
It is a double-woven fabric in which a porous elastic layer 14 with a forest of 7 is formed, and the upper fabric 13 is woven more coarsely than the lower fabric 15, and has voids 18 with an opening area of 1 mm^2 or more on the entire surface. Axle thread 11
is tufted from the lower fabric side 15 to the upper fabric surface (13)
An artificial lawn characterized by having turf grass 19 formed therein. (5) The base fabric 12 to which the leaf axis yarns 11 are tufted is made by simultaneously knitting the upper fabric 13 and the lower fabric 15 and knitting one or several connecting yarns 16 made of monofilaments of 100 deniers or more into the upper fabric. 13 and the lower fabric 15 are joined, and the connecting thread 16 stands up and connects the upper fabric 13 at a substantially right angle from one fabric 13 (15) to the other fabric 15 (13) between them. It is a double warp knitted fabric in which a porous elastic layer 14 is formed in which the standing portions 17 stand between the upper cloth 15 and the lower cloth 15, and the upper cloth 13 has an opening (18) with an opening area of 20 mm^2 or more. It is a chain knitted net fabric,
The lower fabric 15 is a plain knitted fabric in which the chain stitch rows that continue in the wale direction are connected by insertion yarns, and a gap with an opening area of 1 mm^2 or more surrounded by the chain stitch rows and the insertion yarns is continuously formed in the wale direction and the course direction. An artificial lawn characterized in that leaf axonemes 11 are tufted from the lower fabric side (15) to form turf grass 19 on the upper fabric surface (13).