JPH0756145B2 - Reticulated body for greening - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a greening mesh (hereinafter referred to as a mesh) used in, for example, a slope greening method.

[0002]

2. Description of the Related Art For example, one of the methods for greening the slope is a method in which a net-like body is laid on the slope and a vegetation material composed of vegetation seeds and fertilizer is sprayed on the upper surface. According to this construction method, the net and the vegetation material prevent erosion (erosion) of the slope due to rainfall, snow melting, wind erosion, frost heave, etc., and can protect the slope by greening within a few years.

As a net-like body used in such a greening method, a net-like body made of a chemically synthesized plastic such as polyethylene (PE) or polypropylene (PP) has been widely used. That is, a net-like body was formed by weaving a plastic monofilament or flat yarn as a warp and a weft. The reason is that these plastics are strong and inexpensive, and in planting the slopes, the plant protects the slopes by rooting the plants on the slopes and growing until they grow to some extent. This is because it is essential to become a greening base material for

[0004]

However, this plastic has a characteristic that it does not deteriorate semipermanently under normal conditions. Therefore, unlike other plant-based materials or animal-based materials, this plastic has a long life. It will not be weathered or corroded by exposure to wind and rain and become homogenized with soil or soil. For this reason, in recent years, such characteristics have been regarded as a disaster.
It has become a global environmental problem as plastic pollution.

Therefore, under such a circumstance, the use of a plastic net in the slope greening method or the like contributes to environmental greening, on the other hand.
On the other hand, it also promotes plastic pollution.

In order to avoid the problems caused by the above-mentioned characteristics of the plastic material, a mesh made of a plant material such as jute has been conventionally used. Further, viscose rayon is a so-called corrosive material which is made of regenerated cellulose and which is completely corroded even after a long period of time, and can be applied to a loom relatively easily. -82
As proposed in Japanese Patent Laid-Open No. 6-66, it is attempted to be used in the case where the mesh body is partially corroded. Further, in addition to viscose rayon, a reticulate body using a biodegradable plastic as a corrosive material has been proposed in, for example, Japanese Utility Model Laid-Open No. 3-5746.

As described above, in order to corrode the reticulated body, it has been proposed to use various corrosive materials, but conventionally, these have not been used so much. The reason is as follows. That is, when a corrosive net is laid on the slope and then vegetation material is sprayed, most of these nets are corroded about two months after being laid on the slope, and the required strength is reduced. Because it will be gone. For the plants to germinate from the sprayed vegetation material, which is too short for them to grow and flourish sufficiently, such as two months, thus achieving their original purpose of slope protection and plant growth by the reticulate body. I can't.

Therefore, an ideal net-like body for use in slope protection, etc. maintains sufficient tensile strength for about 6 months to 2 years after laying, and eventually corrodes after the plant has grown to some extent. It can be said that it is homogenized in the soil.

The present invention has been made in consideration of the above-mentioned matters. The purpose of the present invention is to maintain sufficient tensile strength as a reticulated body for about two to two years after installation, and then to disassemble and It is to provide a reticulated body that corrodes.

[0010]

In order to achieve the above object, the reticulated body according to the present invention comprises members such as warp and weft constituting the reticulated body body made of a corrosive material treated with an antibacterial agent. There is.

[0011]

In the reticulated body according to the present invention, the members such as the warp and the weft constituting the reticulated body are made of a corrosive material treated with an antibacterial agent. It has the required strength for about 6 months to 2 years after installation. Then, as the effect of the antibacterial treatment weakens or disappears, corrosion begins, which is also corroded and returned to the soil.

[0012]

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

FIG. 1 shows an example of a mesh N according to the present invention. In this figure, 1 is a mesh body composed of warp yarns 2 and weft yarns 3, the size of which is, for example, width 2 m × length 100.
m, and the mesh 4 is, for example, 12 mm in length x 8 mm in width
The monofilament is knitted into a predetermined shape by a Russell loom. Reference numeral 5 denotes a reinforcing rope which is provided at both left and right ends and an intermediate portion of the net body 1 in parallel with the warp yarn 2.

Each of the warp yarn 2, the weft yarn 3 and the reinforcing rope is made of viscose rayon treated with an antibacterial agent. Therefore, the reticulated body N made of viscose rayon treated in this manner is shown in FIG.
And as shown in FIG. 4, when it is laid on the slope 6, the required strength is maintained for about 6 months to 2 years after the installation, and the slope 6
Can be protected.

Further, as shown in FIGS. 3 and 4, when the vegetation material 8 is sprayed by using, for example, a dry spraying device 7, the sprayed vegetation material 8 is repelled by the mesh N. Retained. Then, the reticulated body N maintains its strength until the plant grows from the sprayed vegetation material 8 and becomes prosperous, so that the vegetation material 8 does not run away. After that, the strength of the reticulated body N gradually decreases, gradually decomposes and corrodes into tatters, and finally,
Return to the soil.

In FIG. 3, 9 is a vegetation material 1.
Dry spraying device main body for mixing and stirring 0 and plant seeds (not shown), 11 is a spraying nozzle provided on the tip side of the material supply hose 12 connected to the spraying device main body 9, and 13 is a spraying nozzle Reference numeral 11 is a hose for supplying water mixed in 11, a water tank 14, 15 is a water supply pump, and 16 is a conveying device for supplying the vegetation material to the stirring tank 17 of the spraying device main body. Moreover, in FIG.
Anchor bolt for fixing to.

FIG. 2 shows another structural example of the mesh N. The mesh N shown in this figure has a size of, for example, width 2 m × length 100 m, and its mesh 4 is, for example. Vertical 1
It is 2 mm × width 11 mm, and is knitted into a predetermined shape by a Russell loom using a monofilament. The reticulated body N is formed with tape portions 19 made of flat yarn at appropriate intervals in the direction of the weft yarn 3. The monofilament and the flat yarn, which are the materials of the reticulated body N, are made of viscose rayon treated with an antibacterial agent. Hereinafter, the corrosive material treated with the antibacterial agent will be described in detail.

First, the corrosive material is animal-based,
There are various things such as plant and chemical, but for example animal,
As the plant material, natural fibers such as leather, hair, cotton, hemp, and pulp are typical. In addition to chemical materials, there are polyolefin-based materials that have been easily corroded by chemicals, recycled fibers such as viscose rayon, microbial degradable plastics, and photodegradable plastics. Examples of biodegradable plastics include trade name Tone (manufactured by AMKO, USA), trade name Pullulan (manufactured by Hayashibara Co., Ltd.), and trade name Thor Phil (manufactured by Mitsubishi Rayon Co., Ltd.). And
The photodegradable plastics include, for example, trade name Polygrad (manufactured by Anvas, USA) and trade name Plastigon (manufactured by Ideamasters, USA).

Next, of the corrosive material, the procedure for treating regenerated fiber viscose rayon with an antibacterial agent will be described with reference to FIG. In this figure, 2
0 is a known viscose rayon manufacturing apparatus, 21 is a dryer, 22 is an antibacterial agent treatment tank containing an antibacterial agent 23, 24 is a pair of squeezing rollers, 25 is a dryer, 26 is a curing device, and 27 is a take-up device. It is a device. And the antibacterial agent 23
For example, lauryl, dimethyl, benzyl, ammonium, chloride ... Trade name Mailrapit V-4
3 and octadecyl dimethyl benzyl ammonium chloride ... Product name Meikabinone SMB-85
1 to 10% solution such as (manufactured by Meisei Chemical Industry Co., Ltd.) can be used.

In the thus constructed apparatus, the viscose rayon 28 fed from the viscose rayon production apparatus 20 is pre-dried at an appropriate temperature in the dryer 21. Pre-dried viscose rayon 28
Is made to evade the antibacterial agent 23 in the antibacterial agent processing tank 22. Next, viscose rayon 28 with antibacterial agent 23 hidden
Are appropriately squeezed by the squeezing roller pair 7, and the dryer 2
5, the predetermined drying process is performed. Then, the viscose rayon 28 that has undergone this drying treatment is, for example, at 150 ° C. for 3 minutes in the curing device 26, or
After being cured at 170 ° C. for 1 minute, it is wound by the winding device 27.

FIG. 7 shows the viscose rayon 29 which has been treated with the antibacterial agent as described above. In FIG. 7A, the antibacterial agent 23 is provided on the outer periphery of the viscose rayon 28.
To form a coating layer 30. In addition, the same figure (B)
In the case shown in (1), the coating layer 30 is formed on the outer circumference of the viscose rayon 28, and the permeation layer 31 in which the antibacterial agent 23 is impregnated from the surface is also formed over the entire circumference.

Further, in the step of producing viscose rayon, that is, in a viscose solution containing regenerated cellulose, an antibacterial agent such as the above-mentioned trade name Meirapit V- is used.
43, Meikavinone SMB-85, etc. are internally added at the stage of the viscose solution. In this case, as the composition of viscose rayon to which the antibacterial agent is internally added, it is preferable to add Meilapitt V-43 to the viscose solution at a ratio of 1 to 5%.

The antibacterial agent treatment of a corrosive material such as viscose rayon is not limited to that shown in FIG. 5, but may be constructed as shown in FIG. 6, for example.
That is, in this figure, the viscose rayon 28 fed from the viscose rayon manufacturing device (not shown)
Is passed through the antibacterial agent applying device 32 to apply the antibacterial agent 23 on the surface thereof, and thereafter, it is dried by the dryer 33 and further subjected to predetermined curing by a curing device (not shown), It is wound by the winding device 27.

The antibacterial agent-treated viscose rayon 29 as shown in FIGS. 7A and 7B can be obtained by any of the antibacterial agent treatments shown in FIGS.
Unlike the conventional viscose rayon 29, the viscose rayon 29 has a characteristic that the strength is less reduced by decomposition and corrosion by microorganisms. Then, by using the Russell weaving machine using such an antibacterial agent-treated viscose rayon 29, for example, a mesh body shown in FIGS. 1 and 2 can be formed, and a so-called antibacterial agent-treated mesh body is formed. Can be obtained.

The reticulate body treated with the antibacterial agent is, as in the above-mentioned embodiment, the material before being woven on the loom, that is, at the stage of monofilament or flat yarn.
You may configure the reticulated body by using this treated with an antibacterial agent on a loom, or, after knitting or weaving into a reticulated body of a predetermined shape using a monofilament or flat yarn,
This may be immersed in the antibacterial agent, or the antibacterial agent may be applied by means such as showering or spraying.

By the way, the following experiment was conducted in order to examine the degree of corrosion and the tensile strength of the reticulate body treated with the antibacterial agent. That is, two strands of 2000 denier viscose rayon (tape shape) were prepared, one of which was impregnated with a 5% solution of the above-mentioned Meila Pit V-43 as an antibacterial agent, and the other of which was not treated, and these were flattened. 1 in the field
When it was laid in April 992 and the degree of corrosion and the tensile strength after laying were examined, the results shown in Table 1 were obtained.

[0027]

[Table 1]

From Table 1 above, it can be seen that the wire treated with the antibacterial agent is hardly corroded even after half a year and the tensile strength is maintained at about 79% of the initial value. . Therefore, if the tensile strength of the reticulate body is 0.6 or more, the function as the reticulate body is sufficiently satisfied. Therefore, the reticulated body woven with the strands of the viscose rayon treated with the antibacterial agent is about two years after the laying. Is considered to have the same effect as the conventional mesh. In addition, in the above test, it is added that the net-like body was covered with vegetation half a year after the installation.

As can be understood from the above description, by applying the antibacterial agent treatment to the mesh body made of a corrosive material, it is possible to maintain a desired strength within a predetermined period after laying. By the way, the decomposition / corrosion of the mesh made of corrosive material is because there are bacteria that decompose / corrode the corrosive material. Therefore, if the activity of bacteria can be suppressed, the decomposition / corrosion of the mesh made of corrosive material will occur. Can be delayed for a certain period.

The mesh N according to the present invention is shown in FIGS.
Not only used in the dry spraying method shown in
It can also be used in a wet spraying method using a hydrocedar or gunki. Also, as the vegetation material to be sprayed, a material such as PM C material (registered trademark owned by Jomo Ryokusan Kogyo Co., Ltd.), which is sludge converted into vegetation material, is used.
This may be sprayed by a spraying machine using a mini cleat pump. Alternatively, the mesh N may be simply laid on the slope 6 and used for the purpose of preventing erosion of the slope 6.

[0031]

As described in detail above, the reticulated body according to the present invention can maintain a desired strength within a predetermined period after being laid on a slope or the like, and is gradually decomposed after the lapse of the period. , It will be corroded, so after laying a net on the slope,
When vegetation material is sprayed from above, the erosion of the slope is prevented by the mesh. And
The net is a plant grown from sprayed vegetation material,
Since it maintains its strength until it becomes overgrown, the vegetation material does not run away, and the slope is planted all over. On the other hand, the reticulate body gradually decreases in strength, is gradually decomposed, and is corroded to become tattered, and finally is attributed to soil. Therefore, unlike conventional methods, it is possible to promote greening without promoting plastic pollution.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a mesh body according to the present invention.

FIG. 2 is a plan view showing another example of a mesh body according to the present invention.

FIG. 3 is a diagram showing an example of a dry spraying method.

FIG. 4 is an enlarged view showing a main part of the dry spraying method.

FIG. 5 is a diagram showing an example of a step of applying an antibacterial agent treatment to a corrosive material.

FIG. 6 is a diagram showing another example of a step of applying an antibacterial agent treatment to a corrosive material.

7 (A) and 7 (B) are diagrams showing a cross section of a corrosive material treated with an antibacterial agent.

[Explanation of symbols]

 1 ... Net body, 2 ... Warp, 3 ... Weft.

Claims (2)

[Claims] 1. A reticulated body for greening, characterized in that members such as warp threads and weft threads constituting the reticulated body main body are made of a corrosive material treated with an antibacterial agent. 2. The antibacterial agent contains dimethyl benzyl ammonium chloride as an active ingredient.
The reticulated body for greening according to.