JP4465692B2 - Artificial grass - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an artificial lawn in which a cut pile constituted by a plurality of pile pieces constituting a synthetic fiber monofilament protrudes from a base fabric.
[0002]
[Prior art]
This type of artificial lawn has a ball resilience on the surface that resembles the ground of the soil, a feeling that resembles that of a natural lawn, and that makes it difficult to shave cut piles. After laying on the ground, spread particles such as sand and granular rubber on the surface, spray water between the piles and push the particles between the pile pieces of the cut pile, and the particles in the pile layer Used for filling. The artificial lawn in which the pile layer is filled with granules in this manner is referred to as “sand-filled artificial lawn”, and the operation of filling the pile layer with granules is referred to as “sand-filling work”.
[0003]
[Problems to be solved by the invention]
In the sanding operation of the artificial lawn, the cut pile is pushed down by the lamination of the granules and the pile layer becomes dense, so that the granules are difficult to enter between the pile pieces. For this reason, after spraying and laminating particles, the pushed-up pile is scraped to the surface of the particle stack, and the particles, pile pieces and water are mixed together, and the particles are dropped between the pile pieces. In this way, the pile layer is filled. However, this work takes a lot of labor and time and is inefficient. Therefore, it is conceivable to increase the pile density of the artificial lawn so that the gap necessary for the particles to enter is increased between the pile pieces. However, the pile pieces are pushed more and more into the lamination of the particles. Because it becomes easy to be done, the special effect is not expected.
[0004]
In order not to push the particles deeply into the pile layer, pile yarn is inserted from the back side of the base fabric in which the resin foam layer is laminated on the surface that becomes the pile surface side, and the resin foam layer and the pile layer are integrally formed. It is also possible However, such a resin foam layer must be softly laminated with a high foaming ratio so as not to hinder the insertion (puffing) of the pile yarn when planting the pile. Even if the amount of granules pushed into the layer is reduced, the resin foam layer is crushed and reduced in volume in subsequent use, and the piles must be refilled into the pile layer by spraying and replenishing the granules accordingly. In that case, the degree of crushing of the resin foam layer must be monitored by the degree of sinking of the granules into the pile layer, and no special effect is expected.
[0005]
OBJECT OF THE INVENTION
Therefore, an object of the present invention is to provide an artificial sand lawn that makes sanding work easier and does not require replenishment of special particles (sand) after the construction.
[0006]
[Means for Solving the Problems]
Artificial lawn 15 according to the present invention, cut pile 11 of the single yarn fineness of 50 to 1500 denier and foam paint 13 to the pile surface of the pile fabric projecting from the base fabric 12 is applied, the foam coating of the foam coating 13 The pile piece 14 is covered with the front and back, and a part of the pile piece 14 of the adjacent cut pile and a part of the pile piece 14 are joined by the foamed coating of the foam coating 13 so that the whole pile layer has a three-dimensional network structure. It is characterized by forming .
[0007]
[Action]
In the artificial lawn of the present invention, some pile pieces of adjacent cut piles and a part of the pile pieces are joined through a paint film, and the other pile pieces and the other pieces of the pile pieces are made of paint. It remains as a gap that is not bonded to the film, and the entire pile layer has a three-dimensional network structure similar to that of a resin foam in which large open cells are formed. For this reason, even if particles are spread and laminated on the surface of the artificial lawn, the pile layer is not easily crushed by the weight of the particles, and the particles of the spread and laminated particles are coated with the coating 13 so that they pass through the sieve meshes. It becomes easy to fall into the gap between the pile piece 14 and the pile piece 14 covered with the coating, and as a result, it is not necessary to spray water after spraying and laminating particles, and sanding work becomes easy.
[0008]
In the case where the paint is foamed, the foamed film (13) is adhered to the surface of the pile piece 14, and the pile piece 14 protrudes from the base fabric 12, so that the foamed film (13) is high. Even if it is a flexible film that is highly foamed at the expansion ratio, the particles only rub against the foamed film (13) and fall toward the base fabric, and the foamed film (13) is crushed by the weight of the particles. Don't say Therefore, even if the paint 13 is foamed, there is no need to respread and replenish the granules during use after sanding.
[0009]
In particular, if the paint 13 is foamed and the pile pieces 14 and 14 are connected by a foamed film, the cushioning property of the pile layer forming a three-dimensional network structure is further enhanced. The pile layer having a three-dimensional network structure is not as strong as the base fabric 12 in which the warps and wefts are continuous in the vertical and horizontal directions, and is stretchable in the vertical and horizontal directions compared to the base fabric 12, so that the artificial lawn to be rolled up When there is a difference between the outer diameter and the inner diameter corresponding to the thickness of the pile layer on the front and back, the pile layer expands and contracts according to the difference. Therefore, even if the paint 13 is applied to the cut pile 11, it does not make it difficult to wind the artificial lawn into a roll.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an enlarged view of a part of an artificial lawn according to the present invention. In the artificial lawn 15 according to the present invention, a part of the pile pieces 14 of the adjacent cut piles 11 and a part of the pile pieces 14 are joined by the paint, so that as shown in FIG. In this case, a cross-joined portion 17 where the pile pieces and the pile pieces are cross-joined and a non-cross-joint portion 18 which is not crossed and whose front and back are only covered with the paint appear.
[0011]
To apply paint so that the pile pieces of adjacent cut piles are not completely joined, leaving a gap between them, and covering all the pile pieces, Prepare the paint so that it is lower than the elastic recovery force of the pile piece, press the pile layer after applying the paint, then scrape or squeeze out the excess paint and adjust the amount of paint applied, the coating film Solidify. In order to enhance the elasticity of the coating film (13), the coating is stirred and foamed mechanically, or a foaming agent is added to the coating and chemically foamed. The preferred foaming method for the coating film (13) is the latter, the foaming ratio of the coating film (13) can be made uniform, and the front and back of the pile piece 14 can be covered with a certain thick foam coating film (13). It is possible to obtain an artificial lawn that is rich in properties and that the pile layer can easily expand and contract and can be easily rolled up.
[0012]
The foamed film has a lower film strength than the non-foamed film and easily wears, and therefore is easily peeled off from the pile piece. However, even after sandboxing, even if the tip 19 of the pile piece 14 protruding from between the filled particles is rubbed and the coating film (13) of the tip part peels off, the subsequent state is As with a conventional sand-filled artificial lawn that is not covered with the paint film (13), the tip of the monofilament pile piece only protrudes from the surface of the granule to the surface. The appearance and utility of the are not impaired. In addition, the paint debris peeled off from the tip of the pile piece (monofilament) fills the pile layer as a part of the particles to be spread and laminated, and thus causes no inconvenience.
[0013]
The cut pile 11 has a single yarn fineness of 50 to 1500 denier and a plurality of monofilaments having a maximum cross-sectional dimension of less than 5 mm, particularly synthetic fibers such as nylon, polyester, and polypropylene, which have low adhesion to paint. Filament, especially polyester monofilament or polypropylene monofilament. This monofilament may be in the form of a split yarn with slits in a tape yarn, and in such a split yarn, the filament between the slits opened like a monofilament and the slit. The maximum dimension in the cross section of is less than 5 mm.
The thickness of the coating film (13) is preferably thicker than the minimum dimension in the cross section of the monofilament. For this purpose, the coating film is formed into a foamed coating film (13).
[0014]
The paint 13 in the present invention is a kind of adhesive that joins the crossing portion 17 of the pile piece 14 and the pile piece 14, and does not need to be prepared as a coloring agent for coloring the pile piece 14. It should also be expressed as “agent”. However, as described above, the paint 13 in the present invention has no inconvenience even if it is peeled off after sanding, and the pile pieces are temporarily joined until the sanding is finished. The adhesive strength may be weak enough that the bonding between the pieces may be released. And although the paint 13 in this invention does not need to prepare as a coloring agent which colors the pile piece 14, it may be tinged with the color of the grade which does not impair the color similar to the natural lawn of the pile piece 14. desirable. Therefore, in the present invention, the composition that covers the pile piece 14 and joins the pile piece 14 and a part of the pile piece 14 is not expressed as “adhesive” or “coloring agent” but as “paint”. Yes.
[0015]
Therefore, the “paint” referred to in the present invention means a resin composition having some adhesive force. The paints include vinyl chloride resin paste sol, acrylic resin paste sol, two-component polyurethane resin, other water-resistant polyethylene / vinyl acetate copolymer resin emulsion, acrylic resin emulsion, polyurethane resin emulsion, etc. A compound (resin composition) may be used. The paint is not limited to one type. First, a vinyl chloride resin-based or polyethylene / vinyl acetate copolymer resin-based paint with good adhesion to the pile pieces is applied, and the coating has good elasticity. A polyurethane resin-based paint is applied, and furthermore, an acrylic resin-based paint with a good coloring property that contains a pigment on the film is applied. It is preferable to form a laminate in which the film overlaps the surface of the pile piece in double or triple and multiple layers. The pile fabric used as the base of the artificial lawn is any of tufting (tufted pile fabric), weaving (moquette, towel, Wilton pile fabric), knitting (Rasiel pile warp knitted fabric, pile weft knitted fabric), needle punching It may be a thing.
[0016]
【The invention's effect】
According to the present invention, the pile pieces are partially joined to the paint, the pile layer has a three-dimensional network structure, and the cut pile is difficult to be pushed down on the particles to be laminated. An artificial lawn can be economically obtained by increasing the pile density to such an extent that the tips of the pile pieces are sparsely exposed between the particles and the particles (the surface of the particle laminate). Further, since the pile layer has a three-dimensional network structure and each pile piece is covered with a coating film and reinforced, an artificial lawn having a high cushioning property can be obtained even if the pile density is rough. In particular, when the coating film of the paint is a foamed film, the cushioning property is further increased. In that case, even if the foamed or non-foamed paint film covering the pile piece is rubbed during use and peeled off, the broken piece of the peeled paint film is the same as the granule of sand-filled artificial lawn. It will not cause any inconvenience.
[0017]
When a pigment having a color similar to that of a natural lawn is blended in a paint, an artificial lawn having a cushioning property that can be used without being sanded is provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an artificial lawn according to the present invention, a part of which is enlarged by enclosing it with a circle.
[Explanation of symbols]
11 Cut pile 12 Base cloth 13 Paint 14 Pile piece 15 Artificial lawn 16 Back stitch 17 Cross joint 18 Non-cross joint 19 Tip

Claims (1)

Single yarn fineness is 50 to 1500 denier cut pile (11) has a pile surface of the pile fabric projecting from the base fabric (12) foamed coating (13) is applied by foaming the coating of the foamed coating (13) front and back of the pile element (14) is covered, adjacent part of the pile piece cut pile (14) and the pile layer being joined by foam coating of a portion of the pile piece (14) is foamed coating (13) An artificial lawn that forms a three-dimensional network structure.

Images