JPH0528627U - Water-permeable artificial lawn - Google Patents

Abstract

(57) [Summary] [Purpose] It has excellent water permeability and drainage. [Structure] A plate-shaped plate portion having a porosity of 20 to 80%, and a length provided on the back surface side of the plate portion is at least 2 m.
A plastic deck having a height of 5 to 20 mm and joined to the back surface of the water-permeable artificial lawn cloth. The material of the artificial grass cloth is preferably a polyolefin polymer, particularly an ethylene-propylene copolymer. Also,
3-6 gauge / knitted using a double Raschel knitting machine
Ink, 4 to 7 courses / inch knitted fabric is preferably slice-cut at the center. .. Since it has good drying and drainage properties, it can be widely used both indoors and outdoors.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water-permeable artificial lawn.

[0002]

[Prior Art]

 It has been a long time since an artificial lawn cloth made by tufting or knitting synthetic fiber slit yarn or monofilament was put into practical use, but there is still no good drainage, and it is easy for water to accumulate due to heavy rainfall or watering. Also, problems such as poor dryness have not been solved. For example, even if an artificial lawn cloth was laid on the balcony of an apartment, once it got wet in the rain, water gathered and it was inconvenient because I could not go to the balcony without outside shoes until it dried.

Conventionally, not only is a water-permeable artificial lawn cloth processed by providing through holes in the base cloth of the artificial grass cloth to make it water-permeable, but also the back surface thereof is subjected to special processing to obtain water-permeable artificial grass. Has also been provided. For example, in Japanese Examined Patent Publication No. 51-45894, a cushion layer is adhered to the protrusions of pile threads of man-made lawn cloth to maintain water permeability, but in Japanese Examined Utility Model Publication No. 51-18558, artificial lawn is disclosed. An artificial lawn in which a hard base plate provided with drainage holes is joined to a cloth and crimped filaments are filled between them is disclosed in Japanese Utility Model Publication No. 54-34077, in which an artificial grass lawn cloth is backed with a resin to provide through holes. In addition, a water-permeable artificial lawn with a three-dimensional reticulate body attached to it, and in Japanese Utility Model Publication No. 59-17924, a water-permeable artificial floor with a large number of strips arranged in parallel with each other on the back side of the artificial lawn cloth. However, JP-B-63-40494 discloses a water-permeable artificial lawn in which a cushion layer having voids and non-voids for water passage is heat-sealed on the back surface of a water-permeable artificial lawn cloth. Have been described. Apart from these, water-permeable artificial lawn tiles, which are made by integrally molding the grass part and the base plate with a large hole area in plastic, are used at poolsides and the like.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The water permeability of an artificial lawn has been considerably improved by the above inventions and devices. However, if the amount of rainfall and sprinkling is large, it takes time for draining and drying, and the inconvenience for users has not been eliminated. The present inventor examined the cause, and found that the conventional water-permeable artificial lawn had a big problem in drainage on the back side, and the drying property of the artificial lawn cloth itself was insufficient. In that respect, the water-permeable artificial grass lawn tile made of plastics has no problem of drainage, but has a problem of appearance and feel. The present invention has been completed for the purpose of providing an artificial lawn having excellent drainage and drying properties, and a pleasant feel and appearance.

[0005]

[Means for Solving the Problems]

 The present invention comprises a plate-shaped plate portion having a porosity of 20 to 80% and a leg portion provided on the back side of the plate portion and having a length of at least 2 mm. Providing a water-permeable artificial lawn by bonding the deck plate surface to the back surface of a water-permeable artificial lawn cloth. Among them, the artificial lawn cloth is made of a polyolefin-based polymer, and a water-permeable artificial lawn is used.Furthermore, the artificial lawn cloth is knitted using a double Raschel knitting machine and sliced at the center. A water-permeable artificial lawn, which is a cut artificial lawn cloth, is preferable because it has excellent drainage and drying properties.

[0006]

[Example embodiment]

 The present invention will be described in detail with reference to the drawings showing exemplary embodiments. FIG. 1 is a perspective view showing an artificial lawn cloth portion and a deck portion of a water-permeable artificial lawn of the present invention separately. That is, the water-permeable artificial lawn of the present invention is composed of a water-permeable artificial lawn cloth and a plastic deck which is laminated and joined to the back surface thereof.

First, the water-permeable artificial lawn cloth 2 will be described. In the present invention, the artificial lawn cloth 2 is composed of a portion 8 corresponding to grass and a base cloth 7 for fixing the grass portion 8 to artificially form a grass body, and to provide a feel and an appearance as grass. Have. The artificial lawn cloth 2 is usually manufactured by tufting or knitting, but when it is manufactured by tufting, the base cloth 7 and the turf 8 have different configurations and are manufactured by knitting. If so, both are usually knitted together. For example, split yarns such as polypropylene and polyethylene, plain weaves using polyester filaments, etc., and base fabrics 7 such as knitted fabrics can be obtained by implanting split yarns such as polyamide, polypropylene, and polyvinylidene chloride and cut piles of mono-flats. Cut to length, lined with a backing material such as rubber or synthetic resin, and permeable artificial grass with perforated holes, or apply backing material only to the protruding parts 9 of the pile thread on the back. An example is a water-permeable artificial lawn cloth that ensures the water permeability of the part.

In any case, the artificial lawn cloth 2 is not limited as long as the noble cloth 7 is provided with a water permeable function, but one having a quick water permeable function equivalent to the drainage of the plastic deck 1 is used. preferable. This is because one of them becomes a bottleneck and it is not possible to fully exert its function. As a specific example of such a preferable artificial lawn cloth 2, there is an artificial lawn cloth produced by slice-cutting a knitted fabric using a double Raschel knitting machine at the center. In particular, in order to ensure appropriate water permeability, this knitted fabric preferably has a range of 3 to 6 gauge / inch and 4 to 7 courses / inch. Normally, the yarn used for this knitted fabric has a total fineness of 2000 to 7,000 denier.

It is important and important for the material used for the artificial grass cloth 2 to have both a low water absorption rate and a low solid surface tension in order to accelerate drying. As such a material, a polyolefin-based material, especially polypropylene, and particularly a propylene-ethylene copolymer is preferably used. When polypropylene is used alone, the texture may be too stiff, but by copolymerizing ethylene, a more suitable artificial lawn cloth can be obtained. The propylene: ethylene copolymerization ratio of the propylene-ethylene copolymer is preferably in the range of 90:10 to 50:50.

Next, the plastic deck will be described. In conventional water-permeable artificial lawns, the artificial lawn cloth itself or a cushioning material attached to the back side of the artificial lawn cloth provides sufficient drainage even when water permeates from the front to the back of the artificial lawn. First, it caused poor drainage. Also, because the artificial lawn is thin, even if there was a small pool of water on the back side, the surface was immediately flooded. The plastic deck 1 used for the water-permeable artificial lawn of the present invention has an action of improving drainage of water that has permeated the artificial lawn cloth 2 and preventing the artificial lawn cloth 2 from being easily submerged in a puddle.

The plastic deck 1 is composed of a plate portion 3 and leg portions 4, and the plate portion 3 is manufactured so that the open area ratio is about 20 to 80%. The porosity of the plastic deck 1 is for the holes 5 that do not include closed cells and have a cross-sectional area of about 1 mm ² or more and that communicate with each other in the thickness direction. Closed cells and pores with a cross-sectional area of less than about 1 mm ² are not included because they do not contribute to the quick permeation of water. This is also to prevent the plate portion 3 from becoming a neck for water permeation.

On the back surface side of the plate portion 3, leg portions 4 having an area ratio to the area of the plate portion 3 of 5 to 50% and a height of at least 2 mm are provided. The water that has passed through the holes 5 is drained from the space between the legs 4. Since the legs 4 are independent and only occupy an area of 5 to 50%, the permeated water is not dammed and can flow in any direction. The height of the deck 1 is preferably about 5 to 20 mm because it is easy to use and drainage is maintained. In addition, even if the base surface on which the artificial lawn is laid is uneven, it can be contacted without rising. The cross-sectional shape of the leg 4 is not particularly limited, and may be a circle, a polygon, or the like. However, band-shaped projections, for example, projections such as strips that are continuous in one direction, are not preferable because they do not always secure drainage in each direction and are easily lifted from the base surface. The legs 4 may be hollow in order to lighten the artificial grass and save material. Further, in order to facilitate the joining with the adjacent artificial grass, for example, a joining ring 6 may be provided at the end so that it can be fitted with the leg portion 4 of the adjacent artificial grass.

The material of the plastic deck 1 is preferably a flexible ethylene / vinyl acetate copolymer so as to adapt to unevenness of the base surface and soften the feel, but plastics such as polypropylene, ABS and polyethylene are also used. can do. The plastic deck 1 can be manufactured using a known injection molding method or the like.

The plastic deck 1 and the artificial lawn cloth 2 may be joined with an adhesive, but it is preferable to fix them with a plastic nail or a plastic hook 10. Reference numeral 11 is a hook hole provided in the plate portion. When using an adhesive, it is easy to peel it off, so it is necessary to select it carefully depending on the material used.

The plane shape of the water-permeable artificial lawn of the present invention is usually formed in a tile shape. Generally, the shape is a square, but the shape is not limited to this, and may be a rectangle, a hexagon, or the like. The size can be adjusted to be easy to handle according to the purpose of use. Further, the plastic deck 1 can be flexibly constructed, formed into an endless band, and cut into an appropriate size for use.

[0016]

[Effect of the device]

 The water-permeable artificial lawn according to the present invention has an artificial lawn cloth that has an excellent feel, appearance, and water permeability as an artificial lawn, and a plastic deck that does not float even with excellent water permeability, drainage, and uneven base surface. It is a water-permeable artificial lawn that is placed on the back side and laminated to take advantage of both. In particular, Raschel knitted artificial lawn cloth does not require a base cloth and has a stitch structure with many voids in the part to be joined to the plate part, so it has excellent water permeability, dries quickly, and has the water-permeable artificial lawn of the present invention. Moss and other materials propagate on the laid ground and concrete surface without causing a bad appearance. Also, since it is a knitted fabric, it does not require backing like artificial tufted cloth manufactured by tufting, and it has the effect of making it difficult for the grass to come off. Furthermore, by using double Raschel knitting, an economically advantageous artificial grass cloth can be manufactured.

Furthermore, by forming the water-permeable artificial lawn according to the present invention in the shape of a tile, the work is extremely easy, and only the soiled or damaged part can be replaced. And maintenance becomes advantageous. It is possible to combine various things according to taste. In this way, the water-permeable artificial lawn of the present invention is preferably used in many places where it is easy to get wet, places where water is easily accumulated, places where good drainage is required, such as balconies, poolsides, and outdoor playgrounds. can do.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an example of a water-permeable artificial lawn of the present invention.

[Explanation of symbols]

1: Plastic deck 2: Artificial grass cloth 3:
Plate part 4: Leg part 5: Hole 6: Joining ring 7: Base cloth 8: Grass part 9: Pile thread protrusion part 10: Hook 11: Hook hole

Claims (3)

[Scope of utility model registration request] 1. A plate-shaped plate portion having a porosity of 20 to 80% and a length provided on the back surface side of the plate portion of at least 2 m.
A water-permeable artificial lawn in which the plate surface of a plastic deck having a height of 5 to 20 mm and consisting of m legs is joined to the back surface of a water-permeable artificial lawn cloth. 2. The water-permeable artificial lawn according to claim 1, wherein the artificial lawn cloth is made of a polyolefin polymer. 3. The water-permeable material according to claim 1, wherein the artificial lawn cloth is an artificial lawn cloth obtained by slice-cutting a knitted fabric using a double Raschel knitting machine at the center. Artificial grass.