JPH0349143Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a covering material for vegetation.

(Prior Art) Conventionally, various methods have been proposed for greening slopes and the like.

For example, as disclosed in Japanese Utility Model Publication No. 51-37282, seeds, fertilizers, etc. are sandwiched between two water-degradable sheets, and then a covering material with straw, etc. There is a method of laying a vegetation belt on the slope.

(Problems to be solved by the invention) However, when straw is used as a covering material as mentioned above, this straw becomes humus and becomes a soil improvement material and fertilizer, but humus takes a long time. do.

Therefore, it takes time for humus to become effective for plant growth, and during the humus process, nitrogen necessary for plant growth is absorbed from the surroundings. Therefore, especially when the above-mentioned vegetation zone is constructed on a cut surface with a low fertilizer content, most of the nitrogen fertilizer in the vegetation zone is absorbed, and the nitrogen content necessary for plant growth may be insufficient. To prevent this, it may be possible to introduce a large amount of nitrogen fertilizer into the vegetation zone, but in this case, there is a problem that there is a risk of concentration disturbance due to nitrogen fertilizer during germination.

By the way, organic soil improvers such as peat moss and bark can store large amounts of fertilizer, alleviate concentration problems caused by fertilizers, do not require nitrogen for humus, and are said to humus more quickly than straw. Has excellent functionality.

Therefore, the above-mentioned problems can be solved by forming a covering material using this peat moss or the like.

However, these plant-based organic soil amendments have a high moisture content.
It must be in a wet state of 40 to 80%, and if it is dried in that state, the fibers will shrink and lose their water absorbency, and the above effect will not be achieved.

In addition, in the above-mentioned humid conditions, it is difficult to process this plant-based organic soil improvement material into shapes, and even if it is processed, the vegetation zone will germinate during storage when attached to a water-degradable sheet, making it difficult to put into practical use. It is difficult to change.

As a result of various studies, the inventors of the present invention found that by beating fibers such as peat moss, the surface area becomes larger, and even when dried, it has sufficient water absorbency, and its original function can be reproduced.

(Means to Solve the Problems) The present invention was made based on the above-mentioned knowledge. A water-decomposable paper-like thin sheet made by plowing and drying wood is cut, and the cut pieces are knitted into a rathe shape.

(Function) Since the covering material according to the present invention has the above-mentioned structure, if it is applied to a slope, etc., it will gradually decompose over time without absorbing nitrogen, and will become a part of the soil as a soil improvement material. It comes to constitute a department.

(Example) Next, the present invention will be explained with reference to the drawings which are one example.

Fig. 1 shows a vegetation covering material 1 according to the present invention, which is made by soaking 30 to 60% of fibrillated peat moss or bark as a vegetable organic soil conditioner into pulp, as described below. Cut pieces 2 obtained by cutting a thin paper-like vegetation sheet A are formed into a shape by heat setting or other known means.

Preferably, the vegetation sheet A is manufactured by the process shown in FIG. 2.

That is, the pulp 3 is mixed with an organic soil conditioner 4 made of plant fibers such as peat moss or bark, and this mixture 5 is beaten in a beating step 6, and the raw material is fibrillated. And for example,
The paper stock liquid 7 is prepared by adjusting the conditions necessary for papermaking, such as adding internal additives such as a paper strength enhancer such as polyvinyl alcohol.

This stock liquid 7 is supplied to a conventionally known paper making machine 8 to make paper. Then, as the case may be, they are pressed together and then dehydrated and dried in a drying step 9 to obtain a vegetation sheet A as a sheet-like product.

In the above example, the vegetable organic soil improvement material 4 was beaten together with the pulp 3, but it is also possible to make paper by beating the material in advance. It is inexpensive because it does not need to be beaten.

Further, in the above description, water-soluble polyvinyl alcohol was used as the paper strength enhancing material, but the present invention is not limited to this. However, vegetation sheet A
Since the cut pieces 2 must be decomposed by rainwater, etc., the amount added may be adjusted to the extent that they are water decomposable.

Furthermore, a granular soil improvement material such as vermiculite may be added as an additive, and long fibers of synthetic resin may be mixed into the pulp 3 in order to increase the tensile strength of the sheet. .

The vegetation sheet A obtained as described above is cut into pieces 2 of a certain width.

Next, this cut piece 2 is loosely twisted, for example, and the covering material 1 is made by knitting the cut piece 2 in a conventional manner using the cut piece as a raw material.

In the above-mentioned vegetation sheet manufacturing process, a fibrous or powdered thermoplastic resin may be added to the pulp 3 to heat set the intersection of the covering material, and the cut pieces 2 may be used as the weft threads 2' using a known method. A string obtained by a twisting machine may be used, or the weft may be thermally bonded as a string made of synthetic resin.

(Effects of the invention) As is clear from the above explanation, the vegetation covering material according to the present invention has the cut pieces constituting the covering material made of either peat moss or bark that has been beaten into pulp and fibrillated. Since it is made of a paper-like thin layer of vegetation sheet made by inserting a vegetable organic soil improvement material into the paper, it can be used not only when covering a slope with just the covering material, but also when seeds, etc. are placed between two water-degradable sheets. When integrating it into a sandwiched vegetation belt, it can be done in the same way as in the past, and this vegetation belt can be constructed on a slope.

As time passes after construction, peat moss and bark organic soil improvers become fibrillated and have a large surface area, so they have sufficient water absorption properties and can be used as covering materials due to rainfall. The fibers are loosened and each fiber is fixed to the soil particles on the ground, creating a state similar to that of spraying a plant-based organic soil amendment onto the soil. In addition, this covering material can alleviate concentration disturbances that inhibit plant growth, so when installed in a vegetation zone, it can be used to put a large amount of fertilizer into the vegetation zone, making it possible to eliminate the need for additional fertilization. It has a positive effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the vegetation covering material according to the present invention, FIG. 2 is a process diagram showing a method of manufacturing the vegetation sheet, and FIG. 3 is an enlarged sectional view of the vegetation sheet. A... Sheet for vegetation, 1... Covering material, 2... Cut pieces, 3... Pulp, 4... Vegetable organic soil improvement material.

Claims (1)

[Scope of utility model registration request] Organic soil improvers such as peat moss or bark, which have been beaten and fibrillated, are poured into the pulp, and then dried to cut a water-degradable paper-like thin sheet, and the cut pieces are shaped into grass. A covering material for vegetation characterized by being organized.