JPH1018A - Plant growing aid and method for producing the same - Google Patents

Abstract

(57) [Abstract] [Problem] To provide a plant growth promoting material that can play a role in organizing (greening) a cityscape, restoring a landscape, promoting return to a natural state, and preventing ecosystem collapse. thing. SOLUTION: The plant growth promoting material (A) of the present invention is provided with a net-like sheet (10) (16) in which natural fibers are entangled on both front and back sides of a sheet-like water absorbing portion (14). It is attached to the outer wall surface of a building or a building to help grow a vine plant such as an ivy or a crane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant growth promoting material and a method for producing the same, and more particularly, to ivy, Tsurusaki,
A plant growing aid for helping to grow a plant such as tessen, morning glory, wisteria, etc. that wraps around and adheres to other objects (hereinafter referred to as "vine plant");
And its manufacturing method.

[0002]

2. Description of the Related Art Conventionally, construction of buildings and towers, construction of embankments and bridges, etc., have been completed only in pursuit of user's convenience. Little attention was paid to ecosystems.

[0003] As a result, serious problems such as the mineralization of the streets, the deterioration of the landscape, the destruction of the surrounding natural environment, and the partial destruction of the ecosystem have occurred as a price, and have been addressed by the media and the like. .

[0004] The inventors of the present invention have repeatedly studied whether the above problem can be solved at all, and as a result, one of the causes of the above problem has been found.
Finally, plants growing in contact with the surface of the structure (i.e., vines) are applied to ceramics, metal, and other outer surfaces of tiles and concrete mortar that constitute the outermost layers of modern buildings. It has been found that, in many cases, repellency is exhibited with respect to the applied high-hardness coating film and the like, and the present invention has been achieved.

[0005] The object of the present invention is to promote plant growth, which plays a role in organizing the streets (greening), restoring the landscape, promoting the return to the natural environment, and preventing the collapse of the ecosystem. And a method for producing the same.

[0006]

Means for Solving the Problems The plant growth promoting material of the present invention is provided with a net-like sheet formed by entanglement (including "weaving") of natural fibers on both front and back sides of a sheet-shaped water absorbing portion. It is.

The method for producing a plant growth promoting material of the present invention comprises the following steps (1) to (3). (1) A water-absorbing material is adhered to one side of a net-like sheet formed by entanglement (including “weaving”) of natural fibers via a resin-based binder.

(2) After the other net-like sheet made of natural fibers entangled with the surface of the net-like sheet on which the water-absorbing material is attached, a resin-based binder is attached to the other net-like sheet. And stick it through this.

(3) The two mesh sheets combined with each other are subjected to a heating roll treatment or a hot plate press treatment to be compressed and formed into a desired thickness.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The plant growth promoting material of the present invention is applied, for example, to the outer surface of a building wall, a vertical surface of a building, a vertical surface of a civil engineering structure (such as a dike), or a columnar structure (a steel tower, a telegraph pole). Attach using an appropriate fixing means such as a screw or an adhesive.
Then, a vine plant is planted in the vicinity thereof.

As is well known, the crane plant has a habit of growing while extending the crane around and searching for a starting point, so that it gradually grows and grows with the attached plant growing aid of the present invention as a clue. I will do it.

As a result, greenery can be increased in the city, and the restoration of the landscape, the promotion of returning to a multi-natural state, and the prevention of collapse of the ecosystem can be achieved.

At the same time, buildings and buildings that are originally different in the natural environment can exist while maintaining harmony with the environment.

Since the plant growing aid of the present invention is provided with a water-absorbing portion made of a water-absorbing material as an intermediate layer, it protects the root attached to the vine plant, the whisker or the aerial root from drying, and the aerial root has a water-absorbing portion. Water, such as rainwater and dew, held in the water. In addition, by covering the surface of the building with the material of the present invention that retains a suitable amount of water, rapid changes in the temperature of the building surface due to sunlight and fluctuations in the outside air can be alleviated, and the environment near the plants can be maintained in a favorable state.

[0015] The outer layers on both sides of the plant growing aid are
Since it is made of a net-like sheet made of natural fibers and has a wood-like shape, it has good affinity with plants, and the tip of a vine of a vine plant can be easily caught. Furthermore, due to the natural fiber, it will be reduced to nutrients and humus in the soil by microbial decomposition in the future.

Since the water-absorbing material in the water-absorbing section is attached to both the front and back layers (both mesh sheets) by the resin binder, it is further subjected to a heating roll treatment or a hot plate pressing treatment as a final step. As a result, the surface layer, the intermediate layer, and the back layer are firmly fixed, and are not easily peeled off by an external impact such as wind and rain.

The natural fibers used in the present invention include, for example, coconut fiber, hemp fiber, and cotton fiber, but are not limited thereto. Note that palm fiber is preferably used in view of appropriate rigidity, roughness, and durability.

The above natural fibers are irregularly or regularly entangled and stacked to form a sheet (including a mat) by piercing (needle punching) or resin bonding, or a combination thereof. Is 1-10m
m (more preferably 2 to 5 mm) and a porosity of preferably 90 to 98%. When the thickness is less than 1 mm or when the porosity exceeds 98%, it is difficult to sufficiently adhere the water-absorbing material in the next step.
If it exceeds 0 mm, and if the porosity is less than 90%,
Not only is the compression process in the final step difficult, but in the compressed state, the mesh of the mesh sheet is likely to be clogged, which hinders the movement of water from the water-absorbing section through the mesh. Possibilities arise.

A water-absorbing material is attached to the mesh sheet via a resin binder. The resin-based binder used in the present invention is not particularly limited, but is preferably made of a resin having excellent adhesiveness after drying since the water-absorbing material is attached as described above. Examples of such a resin include acrylate resin emulsions (polymethyl methacrylate, polyethyl methacrylate, polypropyl methacrylate, polybutyl methacrylate, polymethyl acrylate, polyethyl acrylate, methyl methacrylate-acrylic) Alkyl (meth) acrylate compounds such as methyl acrylate copolymer, methyl methacrylate-ethyl methacrylate copolymer, methyl methacrylate-butyl methacrylate copolymer, methyl methacrylate-ethyl acrylate copolymer Homopolymer or copolymer emulsions) or other thermoplastic resin emulsions are preferred. The viscosity of the binder is 300 to 10,000 cp.
It is preferably s. In addition, conventionally well-known tackifiers can also be appropriately added.

The resin binder is used for the net-like sheet.
For example, by a method such as roll coating or spray coating, 300 to 600 g per m ² (15
0-250 g). After application, 10
Drying is performed at 0 to 150 ° C. for 3 to 10 minutes.

The water-absorbing material only needs to have excellent properties of water absorption and water retention, and examples thereof include a water-absorbing synthetic resin, a natural organic material, and a combination (mixture) thereof.

As the water-absorbing synthetic resin, any known resin can be used and is not particularly limited. Specific examples thereof include polyacrylate, acrylonitrile derivative, polyvinylpyrrolidone, polyvinyl alcohol, polyacrylamide, starch-acrylonitrile polymer or hydrolyzate thereof, starch-acrylic acid (salt) graft copolymer, Examples include carboxydimethylcellulose, a hydrolyzate of methyl (meth) acrylate-vinyl acetate copolymer, and a crosslinked product such as cellulose-sodium acrylate-graft copolymer. The resin is made of a water-absorbing material (eg, glycol, water-soluble). Use of a composite material to which an inorganic substance, starch or the like is added does not impede the present invention. These may be used alone or in combination of two or more. In addition, among these, in terms of high water absorption and high water absorption speed,
It is preferable to use a crosslinked product of polyacrylate.

Examples of the natural organic material include sawdust, bark, pulp powder, rice husk, straw and the like.

It is preferable to use a water-absorbing synthetic resin in combination with a natural organic material to form a mixture from the viewpoint that sufficient water absorption can be obtained without increasing the cost. In this case, the blending ratio is preferably from 1:99 to 30:70 in terms of weight ratio of the water-absorbing synthetic resin: natural organic material. Then, the mixture obtained by mixing and stirring the mixture is placed in a press or an extruder, and is heated and compressed at 200 to 300 ° C. to obtain a molded body, which is pulverized by a pulverizer to have a bulk density of 0.4 to
A powder having a particle size of 0.9 g / cm ³ and a particle diameter of 5 mm or less is obtained.

As a commercially available water-absorbing material comprising a mixture of a water-absorbing synthetic resin and a natural organic material, a sawdust obtained from softwood (toga) and a crosslinked product of polyacrylate (trade name: Aqua) Mate AQ-200, manufactured by Sekisui Plastics Co., Ltd. in a weight ratio of 90:10 (Aqua Wood Lactry AQ-1)
0, manufactured by Sekisui Plastics Co., Ltd., bulk density 0.75 g / c
m ³ , powder having a particle diameter of 5 mm or less).

[0026] The water absorbent material, net-like sheets 1 m ² per at a rate of 100 to 400 g, are sheet surface evenly spread, thereby, the water absorption portion which forms a sheet at one side of the net-like sheets are formed. When the amount of spray per 1 m ^{2 of the} net-like sheet is less than 100 g, the amount of water absorption decreases,
Insufficient water supply to plants is a concern. On the other hand, when the amount exceeds 400 g, the water absorption increases, so that the strength of the plant growing aid decreases. The preferred range is 200 to 3
00 g / m ² .

As the other net-like sheet to be bonded to the net-like sheet to which the water-absorbing material is adhered, and the same resin-based binder as described above, are used. It should be noted that both mesh sheets or both resin binders may be the same, or different ones may be used.

The two net-like sheets thus joined together are subjected to a heating roll treatment or a hot plate press treatment, compressed and formed into a desired thickness.

The thickness of the finally obtained plant growth promoting material of the present invention is preferably 1 to 5 mm. 1
If it is less than 5 mm, there is a possibility that a problem that the density is excessively increased and the water absorption rate is reduced may occur. If it is more than 5 mm, there is a possibility that the bonding between the front and back surfaces becomes insufficient and a problem occurs that the film is peeled off during use.

[0030]

EXAMPLES Production Example 1 (Production of Plant Growth Promoting Material (A)) A plant growing promoting material was produced as follows (see FIG. 1). That is, a large number of coconut fibers are piled up, entangled with each other irregularly by needle punching, and bonded with SBR latex to have a thickness of 5 mm and a basis weight of 25.
A net-like sheet (10) having 0 g / m ² and a porosity of 96% was obtained.

On one side of the sheet (10), a binder (12) composed of an acrylate resin emulsion to which a tackifier was added was applied at a rate of 200 g / m ² (dry weight) by a roll coating method. 2 at ℃
Dry for 0 minutes.

Thereafter, a water-absorbing material (sawdust: polyacrylate-based water-absorbing resin = 90: 10 (weight ratio)) was evenly sprayed at 250 g / m ² on one side of the mesh sheet (10). A sheet-shaped water absorbing portion (14) is formed.

Separately, the thickness is 3 mm and the basis weight is 200 g.
/ M ² , 95% porosity, mesh sheet (16) (obtained by entanglement of many palm fibers with each other irregularly by needle punching and bonding with SBR latex) to one side A binder (18) made of an acrylate resin emulsion to which a tackifier was added was applied by roll coating at 200 g / m ² (dry weight), and dried at 100 ° C. for 20 minutes.

The two reticulated sheets (10) and (16) were overlapped on the side to which the resin binders (12) and (18) had been applied, and the two were bonded together. Thereafter, the two mesh sheets combined with each other were subjected to hot plate pressing and compression to obtain a plant growth promoting material (A) having a thickness of 1.8 mm.

Production Example 2 (Production of plant growth promoting material (B)) A plant growth promoting material (B) was prepared in the same manner as in Production Example 1 except that the amount of the water-absorbing material applied was 500 g / m ^2. Obtained.

Production Example 3 (Manufacture of coconut mat (X)) A large number of coconut fibers are piled up, irregularly entangled with each other by needle punching, and bonded with SBR latex to a thickness of 10 mm and a basis weight of 670 g / m2. ^2. A coconut mat (X) having a porosity of 93% was obtained.

Wall Greening Experiment Plant growth promoting materials A and B obtained in Production Examples 1 to 3 above
A wall greening experiment was performed using the coconut mat X.
Details are as follows.

The block wall having a height of 1.5 m and a width of 4 m was divided into sections A, B, C and D at intervals of 1 m in the horizontal direction (see FIG. 2).

The wall of the section A was coated with the plant growing aid A, the wall of the section B was coated with the plant growing aid B, and the wall of the section C was coated with coconut mat X (the fixing method was a butyl rubber-based material). The four sides were bonded with double-sided tape, and the upper two parts were fixed with metal fittings). The wall of the section D was left uncovered without any coating.

Four planters were planted with a crane plant (Hedera helix “Pittsburgh” of the family Rugaceae), and were placed so as to be in close contact with the wall surfaces of the sections A to D, respectively. The plants were watered once every three days. The evaluation after 60 days is shown in the following [Table 1].

[0041]

[Table 1] .

Water retention test Relationship between time and water retention in the plant growth promoting material A obtained in Production Example 1, the plant growth promoting material B obtained in Production Example 2, and the palm mat X obtained in Production Example 3 ( Changes in water content over time) were measured. The measuring method was 10 cm × 10 cm for the plant growth promoting materials A and B and palm mat X.
cm, and a total of 9 samples of 3 samples each were used. Each sample was separately immersed in an acrylic container filled with water at a water temperature of 18 ° C. After 1 hour, it was taken out and left at room temperature (20 ° C.) on a wire mesh to remove excess water. After 5 minutes, the weight measurement was started and the measurement was performed until the water retention reached 0%. The results are shown in FIG. The reason why the water retention rate of the plant growth promoting material B rapidly decreased after 2 hours has elapsed is as follows.
It is considered that the peeling of the layer caused the drying speed to increase and that the water-absorbing material partially dropped off.

[0043]

According to the present invention, the organic transformation (greening) of the streets,
The present invention has provided a plant growth promoting material that plays a role in restoring landscapes, promoting return to a multi-natural state, and preventing collapse of an ecosystem, and a method for producing the same.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view schematically showing a production process of a plant growth promoting material of the present invention.

FIG. 2 is an explanatory diagram relating to a wall greening experiment.

FIG. 3 is a graph showing the results of a water retention test.

[Explanation of symbols]

 A: Plant growth promoting material 10, 16: Reticulated sheet 12, 18, Binder 14: Water absorbing part

Claims (2)

[Claims] 1. A plant growth promoting material comprising a sheet-like water-absorbing portion and a net-like sheet formed by entanglement of natural fibers on both front and back sides. 2. A method for producing a plant growing aid comprising the following steps (1) to (3). (1) A water-absorbing material is attached to one side of a net-like sheet formed by entanglement of natural fibers via a resin-based binder. (2) On the side of the net-like sheet on which the water-absorbing material is attached, another net-like sheet in which natural fibers are entangled, and after attaching a resin binder to the other net-like sheet, Paste through. (3) For the two mesh sheets combined with each other,
A hot roll process or a hot plate press process is performed to compress and form into a desired thickness.