JPH0941382A - Vegetation sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the execution of works, and to improve the growth of seeds. SOLUTION: A thin sheet 2 formed by treating natural fibers by a card machine and a water-soluble polyvinyl alcohol(PVA) film 3 are superposed, and these films are unitied by a needle punching method. The mixture 4 of seeds 4a, fertilizers 4b, soil amendment agents 4c, etc., is mounted on the surface of the water-soluble polyvinyl alcohol film 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation sheet for vegetation such as flowers, grass, grass and woods on slopes, shoulders, mountains, golf courses, soccer fields and the like.

[0002]

2. Description of the Related Art Conventional vegetation sheets are made of non-woven fabric and non-woven fabric.
Laminate non-woven fabric with paper or paper with paper, and put seed,
A mixture of fertilizer and soil improver is used. These vegetation sheets are spread on the slope, and a net is hung on the slope to fix them with a skewer.

[0003]

The above vegetation sheet has the following problems. 1. The non-woven fabric has high strength because it is bonded with an adhesive. Therefore, when a plant germinates, it is difficult for the bud to penetrate through the gaps in the nonwoven fabric and project upward. In this case, the sprouts are spoiled even under the nonwoven fabric and die. 2.Since the non-woven fabric has high rigidity, it is difficult to fit in unevenness,
There is a place floating from the ground, and the germination state varies. 3. When the ground becomes dry, the vegetation sheet expands and contracts, and the distance from the ground becomes uneven. 4. When paper is used for the vegetation sheet, it easily tears and has little water retention. 5, The amount of mixture of seeds, fertilizers, soil conditioners, etc. is small.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a vegetation sheet which is easy to construct and has good seed growth.

[0005]

According to a first aspect of the present invention, a thin sheet formed by treating natural fibers with a card machine and a water-soluble polyvinyl alcohol (PVA) film are superposed, and these are laminated by a needle punch method. It is characterized in that a mixture of seeds, fertilizers, soil conditioners and the like is attached to the surface of the water-soluble polyvinyl alcohol film after bonding.

According to a second aspect of the present invention, a thin upper sheet and a lower sheet formed by treating natural fibers with a card machine are stacked on and under a water-soluble polyvinyl alcohol (PVA) film. It is characterized in that a mixture of seeds, fertilizers, soil improvers and the like is interposed between the lower surface sheet and the upper surface sheet, the water-soluble polyvinyl alcohol film and the lower surface sheet are bonded by a needle punch method.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the invention according to claim 1 will be described below with reference to FIG. The vegetation sheet 1 includes a thin top sheet 2 formed by treating natural fibers such as cotton and hemp with a card machine and a film 3 made of water-soluble polyvinyl alcohol (PVA), and the top sheet 2 and the film 3 are stacked. 1 square c by the needle punch method
Bond at a rate of 20 to 30 points per m.

Next, the film 3 is sprayed with mist, and the mixture 4 of seeds 4a, fertilizer 4b, soil improver 4c and the like is sprayed on the surface of the jelly-like film 3. Then, if the fast-dissolving Japanese paper 5 is placed on top of it and the surface is pressed down, the Japanese paper 5 will become
The mixture 4 is adhered to the film 3, and the mixture 4 is held so that a part thereof is embedded in the film 3. This vegetation sheet 1
Is subjected to a drying process and then wound and stored in a roll shape.

The upper surface sheet 2 is an ultrathin sheet obtained by fluffing natural fibers such as cotton (the length of the fluff is 2 to 10 cm) and applying the hair to a card machine to adjust the hair.
It is 5 to 20 g per square meter. No adhesive is used in this manufacturing process. The film 3 is made of water-soluble polyvinyl alcohol (PVA), has air permeability, and has a thickness of 15 to 20 microns.

The mixture 4 contains seeds 4a, fertilizer 4b, and soil conditioner 4c. In this embodiment, the following specifications are used. 4a Seeds (selected according to purpose) 2 to 20 g per square meter 4b Organic fertilizer and slow-release fertilizer 40 to 100 g 4c Soil conditioner, heat retaining material 100 to 300 g Other PH adjuster Trace amount water retaining agent 10 to 20 g

FIG. 2 shows a second embodiment according to claim 2. The vegetation sheet 11 comprises a film 3 made of water-soluble polyvinyl alcohol (PVA) and an upper surface sheet 2 superposed on the upper surface of the film 3. The lower surface sheet 12 having the same specifications as the upper surface sheet 2 is overlaid on the lower surface of the film, and the film 3 and the lower surface sheet 1
The mixture 4 is evenly disposed between the upper and lower layers 2, and finally, the upper sheet 2, the film 3 and the lower sheet 12 are joined by a needle punch method.

As shown in FIG. 3, the vegetation sheet 1 or 11 wound into a roll 6 is laid on the slope G with the mixture 4 positioned below. In this case, since the film 3 is dry, the vegetation sheet 1 or 11 can sufficiently withstand the strength to be spread while being stretched. Then, it is temporarily fastened with 1 to 2 skewers per square meter or partial soil covering. Next, the surface of the vegetation sheet 1 or 11 is watered (or covered with soil). The moisture is absorbed by the upper surface sheet 2 and the lower surface sheet 12 to retain water, and is supplied to the film 3. The vegetation sheet 1 or 11 becomes flexible and sticks to the ground.

According to this embodiment, the vegetation sheet 1 or 1
In No. 1, since the upper sheet 2 and the lower sheet 12 are bonded to the film 3 to retain the strength when they are spread on the slope, the spread work is surely performed. If water is sprinkled on this, the film 3 absorbs water and softens, and the vegetation sheet 1 or 11 adheres to the ground.

The film 3 of water-soluble polyvinyl alcohol is sequentially dissolved when it rains or absorbs water in the ground, and it is infiltrated into the ground to promote the agglomeration of the soil, so that the seed root Good tension. Further, when the film 3 is dissolved, the upper sheet 2 is in a state where fibers are arranged. Therefore, if the seeds 4a germinate, the upper sheet 2 penetrates between the upper sheets 2 and pulls out the neck. Is significantly improved, and unlike the conventional case, the lower side of the nonwoven fabric does not become a spoiled state. Also, the top sheet 2, the bottom sheet 12, and the Japanese paper 5
Is also returned to the soil, so it does not damage the natural landscape.

The vegetation sheet 1 or 11 can also be applied to grass vegetation. Conventionally, when vegetating wild grass on a golf course, a soccer field, etc., the first method is to cut grass grown on a vast farm such as the foot of Mt. Fuji into a size of about 30 cm square,
This is transported to golf courses, soccer fields, etc. for vegetation. In the second method, seeds are directly sprayed. In order to grow wild grass, it is absolutely necessary to keep a suitable temperature and a suitable humidity, so a mulching sheet (polyethylene sheet with holes) is covered on the upper surface of the grass and fixed with a skewer. And when the lawn was rooted, I was removing the mulching sheet.

However, in the first construction method, once cut grass requires a time of about 6 months to re-veget, so there is a problem that a large number of grasses cannot be immediately responded to at one time. Moreover, transportation costs for transportation are high. Further, in the second construction method, the work of mounting or removing the mulching sheet is troublesome, and there is also the problem of stepping on the field grass that has grown to remove the mulching sheet. By vegetating wild grass according to the present invention, a vast farm for growing wild grass is not required,
Moreover, the transportation cost can be saved, and since the mulching sheet is not required, the construction can be remarkably simplified. According to the applicant's example, the facility cost could be reduced to about half. In addition, when constructing on a windy coast or a mountainous area with a high slope, the probability of flowering can be further increased by hanging and fixing the vegetation sheet 1 or 11 with a net or guacocomo depending on the purpose.

According to the above embodiment, the following effects can be obtained. 1, sheets 2 and 12 made from natural fibers and film 3
Since and are connected by the needle punching method, when they are spread on the construction surface, the strength is high, the construction is easy, and when sprinkled, they soften and adhere to the ground, so there is no unevenness of germination. Since the sheets 2 and 12 are made of natural fibers, they have a high water retention capacity.

3, when the rainwater is supplied to the film 3,
The seeds are well rooted because they are gradually dissolved and promote the aggregation of soil. 4, When the film 3 is melted, the sheets 2 and 12 lose the binding force and the fibers are arranged, so that the germinated buds grow by freely raising their necks from these gaps. The probability of growing will be significantly higher, and it will not die as in the past.

5, the upper sheet 2, the lower sheet 12, and the Japanese paper 5 are corroded and returned to the soil, so that the natural landscape is not spoiled. It can also be applied to mowing. 6, the mixture 4 such as the seed 4a has a large holding force because it is adhered in a large area so as to be buried in the film 3, and a large amount per unit area can be obtained as compared with the conventional method in which the point contact is used. A quantity of mixture 4 can be fitted. 7. Since the upper sheet 2 and the lower sheet 12 are not coated with the adhesive, the adhesive force to the ground becomes large when the sheet contains water, and the number of skewers for fixing the vegetation sheet is 1 compared with the conventional one. It can be reduced to / 4 to 1/5 and the construction work becomes simple. 8, the holding power of the mixture 4 such as the seeds 4a is large, so that the construction of the steep slope can be easily performed without being washed away by wind and rain.

[0020]

INDUSTRIAL APPLICABILITY According to the present invention, a thin sheet formed by treating natural fibers with a card machine and a water-soluble polyvinyl alcohol (PVA) film are superposed, and these are bonded by a needle punching method to form a water-soluble polyvinyl alcohol. Since a mixture of seeds, fertilizers, soil conditioners, etc. is attached to the surface of the alcohol film, the strength is great at the time of construction, and if sprinkled, it softens and adheres to the ground, so construction is easy. In addition, since the seed is in close contact with the ground, it has an excellent effect that there is no unevenness in germination and the probability that the seed grows remarkably increases.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment.

FIG. 2 is a sectional view of a second embodiment.

FIG. 3 is a diagram showing a state in which construction is performed on a slope.

[Explanation of symbols]

 1 Vegetation Sheet 2 Top Sheet 3 Water-Soluble Polyvinyl Alcohol Film 4 Mixture 4a Seed 4b Fertilizer 4c Soil Conditioner 11 Vegetation Sheet 12 Bottom Sheet

Claims (2)

[Claims] 1. A thin sheet formed by treating natural fibers with a card machine and water-soluble polyvinyl alcohol (PV
A) A vegetation sheet, characterized in that a film is laminated with a film, these are combined by a needle punching method, and a mixture of seeds, fertilizers, soil improvers and the like is attached to the surface of a water-soluble polyvinyl alcohol film. 2. A water-soluble polyvinyl alcohol (PV
A) A thin upper sheet and a lower sheet formed by treating natural fibers with a card machine are stacked on the upper and lower sides of the film, and a mixture of seeds, fertilizers, soil improvers, etc. between the water-soluble polyvinyl alcohol film and the lower sheet. A vegetation sheet characterized in that a top sheet, a water-soluble polyvinyl alcohol film, and a bottom sheet are joined together by a needle punching method.