JPH10243765A - Weed suppressing net and its hooking tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject net reducing excess load applied to a worker, increasing safety of the work and a setting place and being modest for environment by forming with a resin having a prescribed size of mesh sufficient for covering exposed parts of soil and suppressing growth of weeds and having microorganism decomposability. SOLUTION: This weed suppressing net 11 has a prescribed size of mesh sufficient for covering exposed parts of soil and suppressing growth of weds. Preferably, the net has notched parts 13 respectively having a prescribed size sufficient for passing planted nursery stocks 12 and not disturbing their growth. The weed suppressing net 11 is obtained by forming a resin having microorganism decomposability (e.g. a homopolymer or a copolymer of hydroxycarboxylic acid, an ester polymer composed of diols with dicarboxylic acid or a ring opened polymer of caprolactones).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a bank, riverbed,
The present invention relates to a net for controlling weeds, which suppresses the growth of weeds on exposed portions of soil, such as a separation zone of a highway, a mountain surface on which afforestation is performed, and is decomposed by microorganisms after a certain period of time, and a fastener therefor.

[0002]

2. Description of the Related Art Generally, soil is exposed or planted in areas where soil is exposed, such as banks, riverbeds, and expressways. However, in this area, there are many sunny places, so that weeds are easy to grow. Therefore, the soil piled up by the roots of the weeds may be broken. In the case of planting, if weeds grow until the seedlings of this plantation grow to some extent, the growth of the seedlings may be hindered because the weeds have a higher degree of growth.

[0003] Also, when planting trees on the hillside after cutting down trees, since this part is generally sunny,
Weeds are easy to grow. Also in this case, if the weeds grow before the seedlings of the plantation grow to some extent, the growth of the weeds is inhibited because the weeds have a higher degree of growth.

[0004] In order to prevent these problems, an operation of cutting weeds manually is performed. However, weeding is hard work, and it is necessary to perform it in the summer, which places an excessive burden on workers.

[0005] In order to eliminate this burden, banks, riverbeds, highway separation strips, mountain hills where tree planting is performed, and the like are covered with a net made of a general-purpose resin such as polyethylene having a predetermined size. ing. By covering with the net, weeds grow from the eyes of the net, but since the weeds cannot grow to a thickness larger than the eyes of the net, they eventually die.

[0006]

However, such a net as described above is fixed by a metal fastener 1 having a sharp tip as shown in FIG. For this reason, it is necessary to be careful about injuries when setting or removing the above-mentioned net. Further, it is necessary to take measures such as prohibition of entry to the place covered with the net in order to prevent injury by the fastener 1.

[0007] When the seedlings grow to some extent or the like and the net becomes unnecessary, it is necessary to remove the net manually and to process a large amount of the removed net.

It is an object of the present invention to reduce an excessive burden on an operator, to enhance the safety of a work and an installation place, and to be environmentally friendly.

[0009]

In order to solve the above-mentioned problems, the invention concerning the weed suppression net has an eye of a predetermined size for covering an exposed portion of the soil and suppressing the growth of weeds. However, it was formed from a biodegradable resin.

[0010] Further, the plant has an eye of a predetermined size for covering a mountain surface on which planting is performed and suppressing the growth of weeds, and has a cut portion having a size through which planted seedlings can pass. It was formed from a biodegradable resin.

Further, the fastener for fixing the weed suppression net can be made of a biodegradable resin.

Since the weed suppressing net and the clasp are formed from a resin having microbial decomposability, they are decomposed after a certain period of time, so that the time and effort for recovery can be saved, and the processing of the recovery net becomes unnecessary.

[0013] Further, since the clasp is formed of a resin having microbial decomposability, injuries and the like during operation are less likely to occur.

[0014]

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

Weed control net 11 according to the present invention
As shown in FIG. 1, covers a mountain surface where tree planting is performed. The weed suppression net 11 has eyes of a predetermined size for suppressing the growth of weeds. Also,
In order to allow the planted seedlings 12 to pass through and not to hinder their growth, they have cuts 13 of a required size.

Since the weed suppressing net 11 has eyes of a predetermined size, it hardly affects the amount of sunlight radiated to the mountain skin. For this reason, planted seedlings 1
2 has little effect on the growth, and has little effect on the growth of weeds. Therefore, even if the mountain skin is covered with this weed suppression net 11, weeds grow from the eyes of the net. However, this weed cannot grow to a thickness larger than that of the net, and eventually withers.

On the other hand, when the seedlings 12 were planted,
The cut 13 is provided so as not to hinder the growth. The cut 13 may be a cut or a hole formed in the weed suppression net 11 at the position where the seedlings are planted.

The weed suppression net 11 is shown in FIG.
As shown in (1), it is possible to cover a portion where the soil is exposed, such as a bank, a riverbed, and a separation zone of a highway.

At this time, the weed suppression net 11 is
Having eyes of a given size, it has little effect on the amount of sunlight illuminating this area. Therefore, as described above, the weeds 14 will eventually wither.

The weed control net 11 is made of a resin having microbial degradability. The biodegradable resin refers to a resin that is decomposed by microorganisms, and any resin having biodegradability may be used. Examples of such resins include homopolymers and copolymers of hydroxycarboxylic acids, ester polymers composed of diols and dicarboxylic acids, and ring-opening polymers of caprolactones.

The monomers and dimers used for the homopolymers and copolymers of the hydroxycarboxylic acids include glycolic acid, lactic acid, glycolide, lactide, 3-hydroxybutyric acid, 4-hydroxybutyric acid, 4-hydroxyvaleric acid, -Hydroxyvaleric acid, 6-hydroxycaproic acid and the like. The diols used in the ester polymer include ethylene glycol,
Examples thereof include 1,3-propanediol and 1,4-butanediol, and examples of the dicarboxylic acid include succinic acid and fumaric acid. Further, examples of the monomer used for the ring-opening polymer of caprolactones include ε-caprolactone.

Examples of commercially available biodegradable resins include polylactic acid ("LACEA" manufactured by Mitsui Toatsu Chemicals, Inc.),
3-hydroxybutyric acid / 4-hydroxyvaleric acid copolymer ("Biopol" manufactured by Zeneca UK), polybutylene succinate ("Bionole" manufactured by Showa Polymer Co., Ltd.), polycaprolactone ("Tone" manufactured by Nippon Unicar, "Placcel" manufactured by Daicel Chemical Industries, Ltd.).

These biodegradable resins have the same tensile strength and impact strength as general-purpose resins such as polyethylene resins, and can be used as substitutes for these general-purpose resins.

As the above-mentioned biodegradable resin, for example,
When using a polylactic acid resin, although there is a change in the environment of the place where it is used, for example, wind, rain, humidity, etc., about 5 to 5
Decomposes in about 10 years. In addition, polylactic acid resin is superior in weather resistance as compared with general-purpose resin, and thus hardly causes cutting or the like due to deterioration.

As the weed suppression net 11, various types of nets can be used. For example, a net formed by knitting, a net formed by weaving, a net formed by arranging warps and wefts at predetermined intervals, and heat-sealing the intersections thereof can be given.

The knitting method of the net formed by knitting may be any knitting method. Examples of weft knitting include flat knitting, rubber knitting, pearl knitting, and the like. . Further, examples of the warp knitting include a circular knitting and a raschel knitting. As shown in FIG. 3, the raschel knit is formed by knitting a loop-shaped warp 21 and a weft 22 under predetermined conditions. With this knitting method, it has elasticity in the warp direction. For this reason, even when there is a protrusion such as a stone or a structure in a place covered by the weed suppression net 11, a predetermined place including the protrusion can be easily set by utilizing the above-mentioned elasticity. Can be covered.

The size of the eyes of the weed suppression net 11 may be determined according to the type of weeds whose growth is to be suppressed. In general, to control tall weeds,
The size of the eye is preferably 2 mm or less, and more preferably 0.5 mm or more in order to sufficiently receive sunlight.

To fix the weed suppression net 11, a fastener 15 is used as shown in FIGS.
The material of the fastener 15 is preferably a microbial degradable resin as described above. The use of this resin makes it easier to prevent injuries and the like as compared with conventional metal products.

The shape of the fastener 15 is not particularly limited. For example, the shape shown in FIGS. This is one in which teeth 17 are arranged side by side on the side surface of one rod-like body 16 in the longitudinal direction, and the height of the teeth 17 on the front end side is lower than the height of the teeth 17 on the rear end side. By taking the shape of the teeth 17, the fastener 15 can be easily driven into the soil, and on the contrary, it is difficult to pull it out. For this reason, it is possible to prevent the fastener 15 once driven in from being pulled out.

[0030]

According to the present invention, a net for weed suppression and a clasp are formed from a resin having biodegradability.
After a certain period of time, it can be disassembled, eliminating the need for collection,
There is no need to process the collection net.

Further, since the clasp is formed of a resin having biodegradability, injuries and the like during operation are less likely to occur.

Further, the weed suppression net is not limited to the exposed soil, such as a bank, a riverbed, or a highway separation zone, or the mountain surface where tree planting is performed. It can also be used for controlling, weeds in the ridges of rice fields and fields, and around flower beds.

Further, the present invention is not limited to weed suppression but can be used as a net buried in soil such as a bottom net of a flowerpot.

In addition, as a result of using this net for suppressing weeds, dead weeds are turned into fertilizers by leaving them as they are, so that when planting trees or the like, the labor required to apply fertilizers can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where a mountain skin is covered with a weed suppression net according to the present invention.

FIG. 2 is a sectional view showing a state in which a bank is covered with a weed suppression net according to the present invention.

FIG. 3 is a partially enlarged front view of the weed suppression net according to the present invention.

FIG. 4 is a perspective view showing an example of a clasp according to the present invention.

5A is a front view of FIG. 4; FIG.

FIG. 6 is a perspective view showing an example of a conventional clasp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Weed suppression net 12 Seedling 13 Notch 14 Weed 15 Fastener 16 Bar-shaped body 17 Teeth 21 Warp 22 Weft

Claims (3)

[Claims] 1. A weed control net formed of a resin having an eye of a predetermined size for covering an exposed portion of soil and having a predetermined size for suppressing the growth of weeds, and made of a biodegradable resin. 2. It has an eye of a predetermined size for covering a mountain surface on which afforestation is performed, and suppressing growth of weeds, and has a cut portion having a size through which the planted seedlings can pass. Weed control net formed from biodegradable resin. 3. A fastener made of a biodegradable resin used for fixing the net according to claim 1 or 2.