JPH0621324Y2 - Water retaining material for flower pot and water retaining container for plant - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention protects the water retaining material provided along the inner surface of the flowerpot and the roots of the plant so that water can be replenished when the soil in the flowerpot is dried. It is related to the water storage container for.

[Problems to be Solved by Conventional Techniques] In plant cultivation in a flower pot, it is necessary to supply water by irrigation or the like almost every day depending on the type of plant.
The plant will die if water is not supplied for a considerable period of time when it is absent due to a trip, forgotten, or when it is transported to a distant place in a potted state.

In recent years, in order to replenish water when water cannot be supplied for a considerable period of time as described above, a water-absorbing resin having a property of being capable of absorbing a large amount of water and retaining water by contact with water is used, and the resin absorbs water. It is considered that the water absorbed by the water-absorbent resin is gradually exuded into the soil when the soil is dried while being kept water.

As a means to mix the water-absorbent resin in the form of powder with the soil, it is difficult to mix the water-absorbent resin uniformly with the soil and the water-absorbent resin tends to agglomerate. Directly adheres, as a result, water in the water-absorbent resin is exuded into the soil, while the water-absorbent resin attached to the roots absorbs water from the plant, which is rather bad for plant growth. Become.

Therefore, it has been proposed that a water absorbent resin is provided around the inner surface of a flower pot and a plastic mesh (mesh) is placed inside the water absorbent resin (JP-A-64-39913).

However, in the case of the above proposal, since there is only a plastic mesh between the water absorbent resin and the soil, the root of the plant extends through the pores of the mesh to the portion of the water absorbent resin and directly absorbs water. Contact with the resin is unavoidable, and there is a risk of absorbing plant water from the roots as described above. Moreover, the mesh itself does not have the effect of diffusing water, water cannot be evenly dispersed in the soil, and the soil comes into contact with the water-absorbent resin through the pores of the mesh. The water will come out relatively quickly and the shelf life will not be so good.

In particular, when the flower pot is a unglazed pot, the water in the water-absorbent resin also permeates into the pot and exudes to the outside, resulting in poor water retention efficiency and even worse shelf life.

Furthermore, if a water absorbent resin is fixedly installed around the inner surface of the flowerpot,
It cannot be removed, which is inconvenient when transplanting plants.

The present invention has been made in view of the above, and its purpose is to:
It is easy to handle, can be used in any plant pot, there is no risk of water-absorbent resin adhering to the roots of plants, and it has good water absorption and diffusivity due to soil drying, so that water can be supplied to the soil. The present invention provides a water-retaining material that ensures water retention, does not let water once absorbed and retains water escape to the outside, has good water retention efficiency, and has a long shelf life.

Further, another object of the present invention is to provide a water retaining container for a plant which can be used also as a flower pot and can be used for protecting the root of the plant at the time of transportation of the plant. .

[Means for Solving the Problems] The first aspect of the present invention for solving the above problems is a water retaining material provided along the inner surface of a flowerpot, which is made by contacting a non-water-permeable sheet made of synthetic resin or the like with soil. It is characterized in that a water retaining layer made of a water absorbent resin is held between it and the fibrous non-woven fabric on the side.

A second aspect of the present invention is a water retention container for protecting roots of plants, which absorbs water between an outer water-impermeable sheet made of synthetic resin or the like and a fibrous non-woven fabric on the contact side with soil. It is characterized by having a water-retaining layer made of a hydrophilic resin.

[Operation] The water retaining material of the first invention is used by forming a water retaining structure by arranging the water impermeable sheet side on the inner surface of the flower pot so as to be in contact with the inner surface of the flower pot.

According to this, the water that has penetrated into the soil due to irrigation from above is absorbed by the non-woven fabric, and when it reaches the part of the water retentive layer held between the non-woven fabric and the flower pot, the water retentive layer absorbs water. The resin absorbs the water that contacts it and retains it.

If the water supply is cut off for a certain period of time, the soil begins to dry, and as the nonwoven fabric in contact with it begins to dry, it is absorbed by the water-absorbent resin in the water retention layer that is in contact with the nonwoven fabric and retained. Moisture exudes so as to permeate the non-woven fabric, spreads by the non-woven fabric, and gradually diffuses into the soil, so that the water is satisfactorily replenished to the soil.

Further, since the nonwoven fabric exists between the water absorbent resin of the water retaining layer and the soil, it is possible to prevent the roots of plants from entering the water retaining layer portion by the nonwoven fabric, and the water absorbent resin does not adhere to the root.

In particular, since the non-water-permeable sheet exists on the outside of the water-retaining layer made of the water-absorbent resin, the water absorbed by the water-absorbent resin is retained without seeping out to the outside, and the inner non-woven fabric is surely provided as the soil dries and The water can be reliably supplied only to the soil side, the retained water can be used without waste, and the water can be replenished into the soil for a long time.

Furthermore, according to the water retention container of the second invention, it can be used alone as a container for protecting the roots of plants and can also be used as a flowerpot, and it has the same excellent water retention and soil retention property as the above water retention material. It has a water replenishing effect and can well protect the root pots of plants at the time of transporting or transplanting the plants.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.

In the examples of FIGS. 1 to 3, (1) is a water retaining material that is attached to the inner surface of the flower pot (10) to form a water retaining structure, (20) is soil for plant cultivation, and (30) is It is a plant that is cultivated.

As shown in the figure, the water-retaining material (1) is a non-water-permeable sheet (2) made of a relatively flexible synthetic resin film such as polyethylene resin, etc., and a fibrous non-woven fabric on the contact side with the soil (20). Water-holding layer (4) with powdery granular water absorbent resin (4a) between (3)
To hold.

The fibrous non-woven fabric (3) is formed by aggregating a large number of fine fibers such as synthetic fibers and bonding them at their contacting portions, and is made of a material having appropriate water absorption. Among them, when it is a thermoplastic synthetic fiber non-woven fabric, as shown in the figure, the non-water-permeable sheet (2) made of a synthetic resin film and the required parts are heat-sealed, and the water retention layer (4) can be reliably held inside, Also, it has good corrosion resistance and is suitable. The thickness, fiber density, etc. of the non-woven fabric (3) can be appropriately set according to the usage mode, and a relatively thick non-woven fabric can be used as one layer, or a relatively thin non-woven fabric can be formed into a plurality of layers as shown in the figure. It can also be used in layers.

The water-absorbent resin (4a) used in the water-retaining layer (4) is composed of acrylic acid-grafted starch, vinyl alcohol-acrylic acid block copolymer, crosslinked polyacrylic acid, modified polyvinyl alcohol, etc., and is almost insoluble in water. It has a property of absorbing and retaining a large amount of water by contact with, and forming a hydrogel, preferably having a water absorption function of about 10 times or more water absorption capacity. These water absorbent resins (4a) are used in the form of powder.

As the water retention layer (4), the water-absorbent resin powder (4a),
For example, it is mixed with a hot-melt type synthetic resin and attached to a non-water-permeable sheet (2) such as a synthetic resin film, and directly held between the non-water-permeable sheet (2) and the non-woven fabric (3). . In addition, as shown in FIG. 4, it may be held inside a water-absorbent thin paper (5) such as one to several sheets of tissue,
Alternatively, it is mixed and held between the fibers of a non-woven fabric or cotton-like member having a large porosity, and this is mixed with the non-water-permeable sheet (2) and the non-woven fabric.
It can also be held by being interposed between (3). In this case, water absorption and water retention are further improved. In either case, the non-water-permeable sheet (2) and the non-woven fabric (3) may be integrated with each other by heat-sealing means or the like in places such as the peripheral portion within a range not impairing water absorption and water retention. desirable. (6) shows the fusion point.

The water-retaining material (1) having the above-mentioned configuration is used in the flowerpot (1
According to the form of (0), it is formed in a shape corresponding to the attachment portion such as the bottom portion (excluding the drain hole portion) and the inner surface of the side wall, or is cut during use and is shown in FIG. In this way, the non-woven fabric (3) is attached to the inside along the inner surface of the flower pot (10), and the soil (20) is put inside the non-woven fabric (3) for use. Make up the structure. In some cases, the water retention material (1) may be provided on only one of the inner surface of the side wall or the inner surface of the bottom.

And by water supply to the soil (20) by irrigation from above, the water that has penetrated into the soil is absorbed by the fibrous nonwoven fabric (3), and when it reaches the water retention layer (4), the water retention layer (Four)
The water-absorbent resin (4a) absorbs the water coming into contact therewith and retains the water.

When the water supply is cut off, when the soil (20) and the non-woven fabric (3) are dried, the water absorbed and retained by the water-absorbent resin (4a) of the water retention layer (4) that is in contact with the non-woven fabric (3). However, it is exuded so that it penetrates into the non-woven fabric (3), spreads out by this non-woven fabric (3), and gradually diffuses into the soil, thereby hydrating the soil and drying the soil (20). And the death of plants (30) is prevented.

Further, since the nonwoven fabric (3) exists between the water retention layer (4) and the soil (20), the nonwoven fabric (3) prevents the roots (31) of the plant (30) from entering the water retention layer (4). Made, water absorbent resin (4a) is root (31)
There is no possibility of absorbing water of the plant (30) without adhering to the plant.

Further, in the above case, since the non-water-permeable sheet (2) exists on the outer side of the water retention layer (4) made of the water absorbent resin (4a), the water retention does not exude to the outside of the water absorbed by the water absorbent resin. Therefore, even if the flowerpot (10) is made of unglazed clay, the water retention efficiency is good, the retained water can be used without waste, and the water can be replenished into the soil for that long.

When the non-water-permeable sheet (2) and the non-woven fabric (3) are made of a thermoplastic resin, a water-retaining material having a water-absorbent resin (4a) held between them by a hot-melt adhesive or the like.
(1) can be further molded into a flowerpot shape as shown in FIG. 5, that is, a container shape to form a container. (7) indicates a drainage hole.

Such a container-shaped product can be easily attached to the inner surface of the flowerpot (10), and can be taken out from the flowerpot as it is at the time of transplantation and used as a water retention container for protecting the root pot. When transporting a plant, it can be used alone as a water retaining container that also serves as a flower pot and protects the root pot.

In particular, when the water-impermeable sheet (2) made of a thermoplastic resin has a small thickness and flexibility, a water-retaining container that can be used by squeezing the opening like a bag can be used. By increasing the thickness of the sheet (2) so that it has shape-retaining strength, the sheet (2) can be configured as a water-retaining container that also functions as a flowerpot having shape-retaining properties.

In order to investigate the effect of using the above water retention material, a heliotrope (1
The following comparative tests were carried out in the cultivation of seeds).

As an example of the present invention, a water retaining material (1) in which a water absorbent resin (4a) is held together with several layers of thin paper between a water impermeable sheet (2) made of a synthetic resin film and a synthetic fiber nonwoven fabric (3). After using the above water-retaining material to sufficiently contain water, the water-retaining material was attached to the inner surface of the side wall of the flower pot so as to be wound around the soil. Further, after adding the soil and planting the cultivated plant, the soil was made to contain water until the water was drained from the drainage hole at the bottom. Then, the plant was allowed to stand in a place where it was not exposed to water without being supplied with water, and the shelf life of the plant was examined.

In addition, as Comparative Example 1, a water-absorbent resin was used by mixing it with about 0.05% in soil for cultivation, and a cultivated plant similar to the above was planted, and the soil was drained from the drainage hole in the same manner as above. After soaking it in water, it was left in the same place without water supply.

As Comparative Example 2, without using a water retaining material made of a water absorbent resin,
The soil was put in a flowerpot to plant plants, and water was added to the soil until the water drained from the drainage hole at the bottom, and then left at the same place without replenishing water.

According to the above-mentioned comparative test, in the case of the example, there was almost no change until about the 7th day and no wilting was observed, and the wilting started from about the 8th day.

On the other hand, in the case of Comparative Example 1, the wilting began to stand out from the third day, the wilting started completely on the sixth day, and the wilting started from the seventh day. Further, in the case of Comparative Example 2, wilting started from around 5 days and almost wilted on 6th day.

As described above, according to the present invention, it has been found that the water retention is good, and even if the water supply is cut off, it is possible to replenish the water of the plant for a considerably long time and prevent the death.

[Advantage of the Invention] As described above, according to the water retention material of the present invention, the water retention layer made of the water absorbent resin is provided between the non-water-permeable sheet made of synthetic resin or the like and the non-woven fabric. Not only is it easy to use in various flower pots, it also has an extremely excellent water retention property, and can gradually diffuse and replenish water as the soil dries, leaving it for a long time, or during transportation to a distant place. However, even if the water supply is cut off, there is no risk of dying the plant because it has a long shelf life.

In particular, since the fibrous non-woven fabric is interposed between the water retention layer made of the water-absorbent resin and the soil, the water absorbed by the water-absorbent resin is diffused through the non-woven fabric and gradually and throughout the soil. It surely penetrates and hydrates the plant, and the non-woven fabric can prevent the root of the plant from entering the water retaining layer, and the water-absorbent resin does not adhere to the root. There is no danger of being absorbed into, and the plant has a good shelf life.

Furthermore, since the non-water-permeable sheet is present on the outside, the water absorbed by the water-absorbent resin is retained without oozing to the outside, and the water retention efficiency is good, and the retained water is not wasted to the soil. It can be used for hydration, and it will last longer.

Further, in the above-mentioned water-retaining material configured as a water-retaining container, it can be used alone as a container for protecting the roots of plants, and has the same excellent water-retaining property as the above-mentioned water-retaining material and water replenishing action to soil. Therefore, the root pot of the plant can be well protected when the plant is transported or transplanted.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention in use, FIG. 2 is a partially cutaway perspective view showing an embodiment of the water retaining material of the present invention, and FIG. 3 is an enlarged sectional view of the same portion. FIG. 4 is a partially enlarged sectional view showing another embodiment, and FIG. 5 is a sectional view showing yet another embodiment. (1) …… Water retention material, (2) …… Non-water permeable sheet, (3) …… Nonwoven fabric, (4) …… Water retention layer, (4a) …… Water absorbent resin, (5) …… Thin paper, ( 10) …… flower pot, (20) …… soil, (30) …… plant.

Claims (2)

[Scope of utility model registration request] 1. A water-retaining material provided along the inner surface of a flower pot, which comprises a non-water-permeable sheet made of synthetic resin or the like and a fibrous non-woven fabric on the side in contact with the soil, which is made of a water-absorbing resin. A water retention material for flowerpots, characterized by holding layers. 2. A water retaining container for protecting roots of plants, comprising a water absorbent resin between an outer water-impermeable sheet made of synthetic resin or the like and a fibrous non-woven fabric on the contact side with soil. A water retention container for plants, which has a water retention layer.