JPH071984Y2 - Weed prevention mat - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention relates to a mat which is laid on a planting ground (ground for cultivating a plant) such as a park, a street, a housing complex, the vicinity of a building, and a roof flowerbed to prevent the growth of weeds. .

[0002]

2. Description of the Related Art Straws and other things have been used for the prevention of weeds on planting grounds for a long time, but their weed-controlling effect was not sufficient and they decayed quickly and lacked durability. Recently, Japanese Utility Model Publication No. 3-91739 discloses a planting mat made of a non-woven fabric that uses hydrophilic fibers such as palm fibers and hemp fibers, but this type of mat rots in about two years. It loses its weed control effect and is poor in durability.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a weed-preventing mat having high weed-proofing effect, durability, water permeability and water retention.

[0004]

[Means for Solving the Problems] Means adopted for solving the above problems will be described below with reference to the drawings.

As the mat 1 laid on the planting ground to prevent weeds, a needle punching cloth mainly made of synthetic fiber such as polyester fiber, polyethylene fiber, polypropylene fiber is used. This needle punching cloth can be made of 100% synthetic fiber and mixed with noodles and rayon up to about 30%.

As a structure of the needle punching cloth, the point of particular use in the present invention is that the fiber density of one needle punching cloth is different between the one-sided wrinkle 2 and the other one-sided wrinkle 3. That is to have it on the cloth.

Further, in order to enhance the weed control effect, a needle punching cloth forming a mat is loaded with a herbicide.

[0008]

[Function] Since the surface of the mat having the above-mentioned density difference having a high density has almost no fluff and the fibers are very densely entangled and hard, when laid on the planting ground with this surface facing up, Even if the seeds of weeds fly and fall on the mats, there is no ground for the seeds to take root, and they die or die in the sun, or are washed away by rainwater or carried away by wind.

The less dense surface of the mat is fluffy and soft. Laying this side up gives better water retention than the opposite.

[0010]

EXAMPLE A laminate of a web of 100% polyester fibers made from spun cards is needle punched at a feed rate of 2 m for 1 minute. At this time, the number of times of needle punching from above and below is set to be, for example, 2: 1 and the number of times from the upper surface is made larger than that from the lower surface. By this method, a needle punching cloth as shown in FIG. 1 is obtained, in which the upper surface has a high density of wrinkles and the lower surface has a low density of wrinkles.

With respect to this needle-punched cloth, the thickness and mass are determined according to JIS-L-1096, and the water permeability is J
The results measured by IS-A-1218 are as follows. Apparent thickness (mm) 3.5, mass (g / m ² ) 29
5. Water permeability (cm / sec), immediately after 3.5 × 1
0 ⁻¹ , after 20 minutes 3.2 × 10 ⁻¹ .

The needle punching cloth is impregnated with a herbicide at a ratio of 75 mL of stock solution per 100 m ² . As the herbicide, for example, N- (phosphonomethyl) -glycine isopropylamine salt, 2-chloro-4,6-bis (ethylamino) -S-triazine and the like are used. It is desirable to use a binder in combination with the herbicide to provide a sustained release of the herbicide from the mat for a suitable period of time.

The needle punching cloth is cut into an appropriate size to obtain a weed prevention mat. This mat is laid on the planting ground in the state shown in FIG. 2, for example. Mat 1
Make a cross cut 6 and extend one of the cuts 7 to the mat edge. The root of the planted tree 4 can be easily covered by opening the cross cut. 5 is a stop pin.

[0014]

[Effects of the Invention] Since the mat of the present invention is made of needle-punching cloth in which fibers are closely entangled, even if weed roots or seeds exist in the soil, they cannot penetrate the mat to grow, and have a weed-preventing effect. Have. Since the mat is made mainly of synthetic fibers such as polyester fiber, it does not rot and can be used for many years. Since it is made of a needle punching cloth, it has water permeability and water retention and prevents the ground from drying. Further, by supporting a herbicide, the herbicidal effect is further enhanced.

By laying the mat with the side with the higher density facing up, the fixing and germination of the flying seeds can be prevented as described in the section of the action. When the density of the entire mat is increased to prevent flying seeds, the water permeability becomes poor, so the density is made different on one side and on the other side. If you want good water retention, use the side with the lower density as the top.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of the product of the present invention.

FIG. 2 is a perspective view showing a usage state of the product of the present invention.

[Explanation of symbols]

1 ... mat, 2 ... one side, 3 ... other side,
4 ... Planted tree, 5 ... Stopping pin, 6, 7 ... Cut.

Claims (2)

[Scope of utility model registration request] 1. A mat made of a needle-punching cloth whose main material is synthetic fiber such as polyester fiber, and the needle-punching cloth has a density difference that one fiber has different fiber density on one side and the other on one side. A mat for preventing weeds to be laid on a planting ground, characterized by having 2. The weed prevention mat according to claim 1, wherein a herbicide is carried on a needle punching cloth.