JPH08228513A - Plant growing sheet structural body for growing plant such as turf, etc., and natural turf structural body - Google Patents

Abstract

PURPOSE: To provide a plant growing sheet structural body capable of easily performing the control of a plant growth and of the plant after its growth, and good in stabilities on setting up, and a natural turf sheet structural body capable of simply and easily setting up at a desired place and easily performing the control and maintenance of the turf. CONSTITUTION: This plant growing sheet structural body A is obtained by stacking a base web layer 1, a plant seed holding layer 50 for holding the plant seeds such as of turf to germinate them and a core substrate layer 2 in this order from bottom to top integrally in one unit, in which the base web layer 1 has a water holding property and the core substrate layer 2 has a number of voids imparting water permeability and ventilating properties, and also has a shape retaining property, and on which a number of plant protecting projections 3 having a flexibility are provided. The natural turf sheet structural body grows turf by using the plant seeds in the plant seed hooding layer 50 as turf seeds 5 in the structural body A.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention is for laying in gardens of general households, river dikes, parks, soils such as golf courses, various structures, planting zones such as roads, fields of various sports facilities, etc. The present invention relates to a plant growing sheet structure capable of growing grass and a natural grass sheet structure obtained by growing grass with the structure.

[0002]

2. Description of the Related Art When growing plants such as natural grass and flowers in gardens of general households, river banks, parks, soils such as golf courses, various structures, planting zones such as roads, etc. , Plant seeds directly in those soils or planting zones and plant seedlings to grow. In that case, an appropriate outflow prevention fence or the like may be provided so that seeds sowed, planted seedlings, fertilizers applied, etc. will not be washed away by rain, wind, irrigation, etc.

Looking at sports facilities, natural grass and soil have been used in the field for a long time. However, because maintenance and management of these are difficult, artificial grass is often used today. Has become. However, some sports include those that are not suitable for playing on artificial grass, such as soccer, so natural grass is still used for such competitions.

In the case of sports facilities, however, it is difficult to grow and maintain natural turf directly in the field, and when grass is damaged due to competition play, it takes time to regenerate it. However, since it may occur that continuous use is not possible, a separately cultivated natural turf may be installed on a prepared groundwork, etc. If damage occurs, that part may be replaced with a new one.

As described above, natural turf for installation in a sports facility or for replacing a part of the turf installed in the facility when the turf is damaged is cut by cutting natural turf grown in natural soil into an appropriate size. Of course, a natural turf sheet structure that can be relocated without directly using natural soil may be adopted.

Incidentally, such a natural grass sheet structure is
It can be considered to be laid and used in gardens of general households, river dikes, parks, golf courses, hills, soil such as coasts, various structures, and planting zones such as roads. As a natural grass sheet structure, for example, Japanese Patent Laid-Open No. 51-119108 discloses a rollable grass mat in which a mesh mat and an impermeable underlayment sheet are sequentially provided under a grass soil layer composed of sawdust compost. Japanese Unexamined Patent Publication No. 54-117732 discloses a lawn sheet in which soil or sand is placed on a net, and a lawn is grown on the net, and Japanese Unexamined Patent Publication No. 60-95004 discloses a perforated rubber mat or a synthetic resin plate. Japanese Patent Application Laid-Open No. Sho 62-62, which is laid at a natural grass growing place and puts soil and sand, a lawn runner, a chemical fertilizer and a water retaining material in the hole to grow grass.
No. 25907 discloses a mat with seeds in which a turf seed is mixed and held in a mat containing rock wool as a main component, and Japanese Unexamined Patent Publication No. 63-91015 discloses a rock wheel having a tip portion at substantially equal intervals. A vegetation mat in which aggregates having a bottom and formed in a lattice shape are integrated, and turf seeds are enclosed in low-kool,
Japanese Unexamined Patent Publication No. 2-104216 discloses disassembled and stretched cut grass, and lined runners are arranged on a net having an appropriate mesh interval.
A long wound roll product whose upper surface is coated with water-soluble paper, and Japanese Patent Application Laid-Open No. 3-247204 discloses a side surface and a lower surface of a lawn cultivation floor material obtained by mixing a fertilizer and an inorganic lightweight soil member. Wrapped with a lower sheet, an upper sheet is provided on the upper surface of the flooring material, a grass seed holding member is arranged on the lower surface side of the upper sheet, and a mesh shape is formed in the floor material between the grass seed holding member and the lower sheet. A wavy net is provided, and the upper and lower sheets are sewn with threads.
Each discloses a natural turf floor interconnected and integrated with staples or the like.

[0007]

[Problems to be Solved by the Invention] However, gardens for general households, river dikes, parks, golf courses, hills where rainwater flows easily, soils such as windy coasts, various structures, planting zones for roads, etc. When cultivating plants such as natural turf and flowers, when sowing plant seeds directly into those soils or planting zones or planting plant seedlings, when planting seeds, the seeds planted or seeded are given. There is a problem that fertilizers are easily washed away by rain, wind, irrigation, etc. In order to prevent this, when installing an outflow prevention fence or the like, it takes extra time and labor, and it is extremely troublesome.

The natural grass sheet structure disclosed in the above publication is cut as it is, or if necessary, cut, or after germination of grass seeds, and further after growth, cut to an appropriate size if necessary.
It can be laid on the soil of general household gardens, river banks, parks, golf courses, etc., and can also be used for planting zones of various structures and roads, etc. It can be resolved and it can be used for sports facilities, but it has the following problems.

That is, Japanese Unexamined Patent Publication No. 60-9
The perforated rubber mat and synthetic resin plate described in Japanese Patent Publication No. 5004 are for growing grass not intermittently but intermittently, and therefore it is difficult to adopt it when it is desired to grow grass entirely. Especially difficult to use in sports facilities. In addition, JP-A-3-24
Except for the natural turf floor described in Japanese Patent No. 7204, in which the upper and lower sheets are connected and integrated with sewing threads, staples, etc., the other things are easily disassembled and damaged easily, and are severe in sports facilities. It is difficult to use in places where force is applied. Also, when the grass is damaged by being scraped or the like, the material under it appears and becomes very unsightly.

Even in the case of the natural turf floor disclosed in Japanese Patent Laid-Open No. 3-247204, if the turf is damaged such as being scraped, the material below appears similarly and becomes unsightly. In addition, the natural grass sheet structures described in any of the publications have poor installation stability due to their light weight and the like, and there are difficulties in laying and using them on slopes such as river banks, hills, etc., especially when installed in sports facilities. , Unstable and unsuitable to play on it.

[0011] Therefore, it is an object of the present invention to provide a plant growing sheet structure having a plant species, which has the following advantages. That is, cut as it is, or cut into appropriate dimensions as necessary, gardens, parks, river banks, golf courses, hills where rainwater flows easily, soils such as windy coasts, various buildings, etc. It can be easily and easily installed in a planting zone on a road or in a sports facility, and plants can be grown from plant species such as turf species that have been held in advance and can be relocated. Even in the case of wind and rain, irrigation, etc., the seeds of the plant that have been held in advance and the sprouts and the like from it do not easily move or flow out, and the plant management is accordingly easy. The whole is integrated and difficult to decompose, and the seeds of the plant held and the shoots, roots, etc. from it are protected against the load from above and the pulling load from the side. It is easy to manage plant growth and maintenance after growth. Even before the plant grows, or when the grown plant is damaged or lost due to scraping, withering, etc., the unsightlyness can be reduced. Even if weed seeds are present, they can be laid so as to press them down to prevent weeds from growing, which makes it easy to grow and maintain the plants. It is possible to adjust the weight, which makes it easier to relocate by reducing the weight, and it is possible to increase the installation stability at the installation target place by making it heavy, and it is possible to obtain installation stability that can be used even in sports facilities etc. . It is possible to produce long products.

The present invention also provides a natural grass sheet structure obtained by holding a grass seed on such a plant growing sheet structure and growing natural grass from the grass seed, which has the following advantages. This is an issue. The "turf seed" is a concept that includes not only the seeds of the turf itself, but also runners obtained from cut grass and the like that can be seeds of the turf. Cut it as it is, or cut it to an appropriate size if necessary, for soil such as gardens of general households, parks, river dikes, golf courses, hills, coasts, various buildings, planting zones of roads, etc. It can be easily and easily installed in sports facilities and can be relocated. The grass does not easily move or flow out due to weather, irrigation, etc., and the grass is easier to manage. The whole is integrated and difficult to disassemble, and the shoots, roots, etc. of the turf are protected against the load from above and the hanging load from the side, so it can also be used in sports facilities. From the point of view, turf management is easy. Even if the grass is damaged or lost due to scraping or withering, its unsightlyness can be reduced compared to the conventional natural grass sheet structure.Even if there are weed seeds, weeds are laid so as to press them down. It is possible to suppress the growth of grass, and it is easy to manage the grass, and it is possible to adjust the weight, which makes it easier to relocate and reduce the weight, and it is possible to increase the stability of the installation at the installation site by making it heavy. It is possible to obtain installation stability that can be used even in sports facilities and the like. It is possible to produce long products.

[0013]

A plant growing sheet structure for growing plants such as turf according to the present invention which solves the above problems holds a base web layer and a plant species such as turf species and germinates. A plant species holding layer for and a core material layer are overlaid in this order from the bottom to the top and integrally connected, the base web layer has water retention, and the core material layer is water permeable and breathable. It is characterized by having a large number of voids for imparting properties and having a shape-retaining property, and having a large number of flexible plant protection projections on its surface.

Further, the natural grass sheet structure of the present invention which solves the above-mentioned problems is a natural grass sheet obtained by growing grass from the plant kind to be held in the plant growing sheet structure of the present invention. It is a structure. The base web layer only needs to have water retention, and regarding this water retention,
It suffices if it can absorb and retain water by pouring water, pouring it, or immersing it in water. By adjusting the water retention amount, it is possible to adjust the weight of the plant growing sheet structure and the natural grass sheet structure of the present invention, and the water retention amount is adjusted to adjust the water retention amount to plant species such as natural grass, sprouts, and grown plants. The amount of water supply can be controlled, and the amount of nutrient supply can also be controlled by making the retained water contain nutrients. For adjustment of water retention capacity,
Not only adjustment by the amount of water to give, but also compression, squeezing,
It is desirable that the water can be adjusted by draining it by tilting it. In any case, it is desirable that the base web layer has flexibility in order to improve familiarity with installation locations of the plant growing sheet structure and the natural grass sheet structure according to the present invention.

As such a base web layer, for example, a web layer formed by intertwining various fibers (for example, a web layer made of cotton), a woven fabric of various fibers, a knitted fabric, a combination thereof, and the like can be considered. Among these, the cotton web layer has good water absorption and water retention, and can easily discharge water by compressing, squeezing, etc. With these, it is possible to easily adjust the weight and adjust the amount of water retention to adjust the natural grass. It is desirable because the amount of water supplied to seeds, sprouts, grown plants and the like can be easily controlled, and the amount of nutrient supply can be easily controlled by making the retained water contain nutrients.

When the base web layer is a cotton web layer,
The cotton may be natural cotton, synthetic fiber cotton, or a combination thereof. However, all or part of the cotton may be water-absorbent cotton so that the water retention amount can be adjusted over a wide range. Conceivable. For example, it is possible to use a mixed cotton of synthetic fiber cotton and water absorbent cotton. Examples of the synthetic fiber cotton include cotton made of polyester fiber, acrylic fiber or the like having a denier of about 2 to 8, and as the water absorbent cotton, super absorbent fiber (trade name: Lanseal F) manufactured by Toyobo Co., Ltd. An example of the absorbent cotton is

The core material layer has a large number of voids (for example, continuous voids) that provide water permeability and air permeability so as not to prevent germination of plant seeds and subsequent growth, and also has shape retention. It is sufficient if it plays a role of maintaining the strength of the plant growing sheet structure or the natural grass sheet structure, but for example, a three-dimensional mesh structure formed by intertwining synthetic resin fibers, a synthetic resin fiber, or the like. In addition to a net core material layer such as a net-like basket made of, a plurality of small nets in a row, a net plate made of synthetic resin fiber, or a plurality of stacked nets, such a net There are various conceivable types such as a body core layer loaded with a bulk material, sawdust, wood pieces, or a structure in which a bulk material, sawdust, wood pieces, etc. are contained in a net bag or a cloth bag. In any case, it is desirable that the plant growth sheet structure or the natural turf sheet structure has flexibility as a whole in order to improve familiarity with the installation place, or further, walking on such a structure. In order to improve the feel of sports play (especially in the case of a natural grass sheet structure), it is desirable that the golf ball has appropriate elasticity.

A three-dimensional network structure formed by intertwining synthetic resin fibers is one of the desirable ones in view of flexibility, elasticity, a large number of voids, strength, etc., and particularly, for example, polyamide and polypropylene. A three-dimensional network structure formed by intertwining synthetic resin fibers made of vinyl chloride resin or the like and having a diameter of about 0.1 to 0.8 mm is one of the preferable ones.

As such a three-dimensional mesh structure, for example, a mesh structure manufactured by Zeon Kasei Co., Ltd. (trade name: Zeomat 7020) can be adopted. In any case, in the plant growing sheet structure, before the plant grows from the seed of the plant species holding layer, when the grown plant is scraped, when it withers, or when the grass is scraped in the natural grass sheet structure, it withers, etc. In order to prevent the core layer from being unsightly when colored, at least the surface part of the core layer is colored to resemble, for example, the color of a plant (for example, a green color or a state in which brown streaks and green streaks are mixed). You may keep it.

The plant species holding layer may be one capable of holding plant species such as turf species while preventing their migration and allowing them to germinate, but it is desirable that the plant species are dispersed and arranged as uniformly as possible. As such a plant species-retaining layer, for example, a non-woven sheet that does not prevent germination of plant species and subsequent growth, plant species that are uniformly dispersed and arranged on the non-woven sheet, and a plant that is coated from above the plant species, Mention may be made of those containing a water-soluble seed pressing film which does not prevent seed germination and subsequent growth. The water-soluble seed control film is considered to be a protein-based or starch-based water-soluble film, and may include germination nutrients. In addition, it is also conceivable that seeds are dispersed and arranged on a base sheet such as a nonwoven fabric sheet and the seeds are attached to the base sheet with an appropriate adhesive. In any case, it is desirable that each part except the seed is flexible so as to be well adapted to the core material layer and the base web layer. Various types of non-woven sheets and base sheets such as water resistant ones and water soluble ones can be considered.

The base web layer, the plant species holding layer and the core material layer may be connected to each other by a thread or other means. In this respect, when the base web layer made of cotton is adopted, the cotton fiber constituting the base web layer is used. May be connected by entwining and connecting some of them to the core material layer by passing them through the plant seed holding layer, or a thread or other connecting means may be employed together with them. In any case, a backing material is provided under the web layer for the purpose of one or more of protection of the base web layer, shape retention, adjustment of cushioning property of the entire structure, adjustment of structure weight, etc. May be. Such a backing material is a sheet-like backing material adhered to the lower surface of the base web layer with an adhesive, a sheet-like backing material is overlaid on the base web layer and connected by a connecting means such as a thread, a combination thereof is provided. The backing material can be provided by forming the backing material in the form of a sheet below the web layer, or by applying the backing material on the lower surface of the base web layer.

When the plant-growing sheet structure and the natural grass sheet structure according to the present invention are so-called permanent type which are permanently installed in a certain place, such a backing material is provided between the base web layer and the outside thereof. If it is a so-called temporary type that is provided so that water can pass through and may be relocated in some cases, it may be possible to install so as to disable such water passage. But
It may be provided so that water can be passed between the base web layer and the outside thereof in order to utilize the moisture of the soil or the like in which the structure according to the present invention is installed and / or to improve the drainage of the structure. . In this case, the backing material itself may or may not have water permeability. For backing materials that do not have water permeability, by installing them intermittently,
Water can be passed between the base web layer and the outside.

In any case, the backing material provided on the base web layer may be partially or entirely made of a water-soluble material containing fertilizer. In the plant growing sheet structure and the natural grass sheet structure of the present invention, a large number of flexible plant protective protrusions are provided on the surface of the core material layer. Such protective protrusions are synthetic resins, natural products, and A fibrous material for forming protective projections, which is a combination of the above, can be provided by adhering, binding, weaving, etc. to the surface portion of the core material layer. The fibrous material may be woven over the layers to form plant protection protrusions on the surface of the core material layer. In this case, the fibrous material alone or together with the connecting means such as other yarns can contribute to the integral connection of the base web layer, the plant seed holding layer and the core material layer.

When a fibrous material for forming plant protection projections is woven from the core material layer to the base web layer and the fibrous material is used to form the plant protection projections on the surface of the core material layer,
Of the fibrous material, at least a part of the portion woven into the base web layer may be retained by the backing material. In this case, the backing material is not only applied to the base web layer in order to obtain a retaining effect, but is also adhered to the lower surface of the base web layer so as to fix the fibrous material. It is conceivable that the backing material is formed into a sheet shape and provided, or the backing material is applied to the lower surface of the base web layer to form the backing material. The backing material serves to prevent the fibrous material from slipping off in this manner together with one or more of the purposes of protecting the base web layer, retaining the shape, adjusting the cushioning property of the structure, adjusting the structure weight, etc. as described above. Although it can be adopted for the purpose, even if one or more of the protection of the base web layer, the shape retention, the adjustment of the cushioning property of the structure, the adjustment of the structure weight, etc. may be achieved as a result, As an aim, a backing material may be provided in order to obtain only the effect of preventing the fibrous material from coming off.

In any case, pile yarn can be used as the fibrous material for forming the plant protection protrusions,
The protective projections are cut piles, such as in carpets,
It may be formed as a pile protrusion such as a loop pile or a pile-shaped protrusion (for example, a protrusion due to a chain stitch). Such a fibrous material, whether it is a pile thread or not, has plant protection protrusions formed on the surface of the core material layer, by which plant species in the plant species holding layer, sprouts or roots therefrom, and grown. It only needs to have enough strength (tensile strength, etc.) to protect plants, waist strength, etc., and consists of single fibers, bundles of multiple single fibers, or bundles of multiple single fibers. There are various possibilities. For example, thick denier filament yarns such as polyamide, polypropylene and polyester can be used.

In any case, in order to grow a plant, a fibrous material for forming plant protection protrusions, whether it is a pile thread or not, is selected to have a water-transporting property. May be. As a fibrous material having such a water-transporting property, a fibrous material having a water-transporting property due to a capillary phenomenon can be selected and used as a typical example from a wide range.
Also, International Publication No. WO90 / 151 based on PCT application
It is also possible to exemplify the monofilament twisted in a spiral shape in cross section, which is disclosed in Japanese Patent Publication No. 93, for artificial turf and which is excellent in water retention and water transfer.

In any case, the height of the plant protection projections from the surface of the core material layer should be selected from the viewpoint of plant protection and the like so that the grown plants can extend above the protection projections. For example, when the plant is turf, it is not limited thereto, but may be about 3 to 15 mm, more preferably about 5 to 7 mm. Further, the density of the plant protection projections on the surface of the core material layer can be appropriately selected within a range where plant protection can be achieved and plant growth is not hindered.

In any case, before the plant grows from the plant species of the plant seed holding layer in the plant growing sheet structure, when the grown plant is scraped or withers, or in the natural grass sheet structure. In order to prevent the plant protection protrusions from becoming unsightly when they are scraped or withered, the protrusions are colored to resemble, for example, the color of the plant (for example, in a green color or in a state in which brown and green streaks are mixed). You may keep it.

In any case, the plant-growing sheet structure and the natural turf sheet structure according to the present invention have a base web layer and a core material layer, and a plant-growing sheet structure in order to facilitate transportation and storage. Regarding the body, the plant species holding layer may be made flexible, so that the whole body may be provided with flexibility so that it can be rolled.

[0030]

The plant growing sheet structure and the natural grass sheet structure according to the present invention are cut as they are, or cut into appropriate sizes as needed, and are used for gardens, parks, river banks, golf courses, hills of general households, It can be easily and easily installed on soil such as the coast, various buildings, planting zones on roads, etc., and can be relocated if necessary.

Regarding the plant-growing sheet structure, if water or water containing plant-growing nutrients is supplied to the plant-growing sheet structure under appropriate temperature conditions, the base web layer absorbs and retains water, and the plant species germinate. Then, the plant grows. Also for the natural grass sheet structure, water or water containing grass growing nutrients is supplied to this, the base web layer absorbs and retains water, and grass is maintained,
It will also grow anew.

For both the plant growing sheet structure and the natural grass sheet structure, when a plurality of sheets of appropriate size are arranged side by side, if necessary, adjacent ones may be sewn together, for example, at the base web layer. , Can be integrated with each other by using sheet fasteners. This integration provides installation stability. The planar fastener is a fastener formed by a combination of a planar female member provided with a large number of loops and a planar male member provided with a plurality of engaging protrusions that can be engaged with and disengaged from the loop, and has a constant width, for example. Attach the strip-shaped (tape-shaped) male member (or female member) to the lower edge of the base web layer on the edge facing the adjacent base web layer by sewing, bonding, or the like.
In adjacent structures, these male members (or female members) at the bottom edge of the base web layer are arranged so as to abut against each other, and have a width that is about twice the width of the strip-shaped male members (or female members). It is conceivable that a strip-shaped female member (or male member) is brought into contact with these two male members (or female members) to interconnect adjacent structures.

In addition, when a plurality of sheets of appropriate size are placed side by side so that adjacent ones are in contact with each other, even if water or water containing growth nutrients is locally supplied to all of them, the base The web layer acts as a water flow path,
Water and nutrients are supplied uniformly throughout. Further, the roots of the growing plant reach the base web layer, from which water, or further water and nutrients dissolved therein can be absorbed.

In the plant-growing sheet structure, the plant species are stably retained in the plant-species retaining layer, and the germinated and extending roots from the species are also stably retained at substantially that position. However, it is difficult for seeds, sprouts, roots, etc. to move or flow out. Also in the natural grass sheet structure, the grass roots enter between the core material layer, the base web layer, or the plant protection protrusions, and the grass moves due to weather, irrigation, etc.
Hard to leak.

In both the plant-growing sheet structure and the natural grass sheet structure, the entire structure is integrated, so that it is difficult to decompose even when an external force is applied, and a plant protection protrusion is provided on the surface of the core material layer. Therefore, in the plant growth sheet structure, the seeds of the plant species holding layer and the sprouts therefrom, roots and the like are protected against the load from above and the lateral pulling load by the core material layer and the plant protection protrusions, Also in the natural grass sheet structure, the shoots, roots and the like of the grass are protected by the core material layer and the plant protection projections against a load from above and a pulling load from the side.

Further, a plant protection protrusion provided on the surface of the core material layer,
Alternatively, at least the surface portion of the core material layer can be colored, and by appropriately coloring, in the plant-growing sheet structure, before the plant grows from the seed, or the grown plant is scraped or damaged by withering, etc. , Even if it is lost, the unsightly can be reduced. Even in the natural grass sheet structure, even if the grass is damaged or lost due to scraping, withering, etc. Can be reduced than the body.

In both the plant-growing sheet structure and the natural turf sheet structure, the base web layer can be laid so as to press down the weed seeds even if the seeds are under the base web layer. It can suppress the growth of weeds. In both the plant growing sheet structure and the natural grass sheet structure, the weight of the entire structure can be adjusted by adjusting the amount of water retained, such as adjusting the amount of water supplied to the base web layer. By adjusting the weight, the weight can be reduced as a whole to facilitate the relocation, and the installation stability at the structure installation location can be increased, and the installation stability can be obtained that can be used even in a sports facility or the like.

Further, both the plant-growing sheet structure and the natural grass sheet structure can be produced as long products.

[0039]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic cross-sectional view of an example of a plant growing sheet structure according to the present invention, showing a state in which turf seeds are held. FIG. 2 is a schematic sectional view of an example of the natural grass sheet structure according to the present invention. The natural grass sheet structure shown in FIG. 2 is shown in FIG.
In the plant growing sheet structure shown in (1), the turf seed germinated and grew.

In the plant-growing sheet structure A shown in FIG. 1, the base web layer 1, the plant-species retaining layer 50, and the core material layer 2 are superposed in this order from bottom to top, and are integrally connected, A large number of flexible plant protection protrusions 3 are provided on the surface of the core layer 2. The base web layer 1 is made by mixing 50% synthetic fiber cotton made of 6 denier polyester fiber and 50% water absorbent cotton made of 5 denier water-absorbing acrylic fiber (Lanseal F manufactured by Toyobo Co., Ltd.) to give a basis weight of 30.
A cotton web layer having a weight of 0 g / m ² .

The core material layer 2 is a three-dimensional network structure formed by intertwining synthetic resin fibers. Here, Zeomat 7020 manufactured by ZEON Corporation is intertwined with polyamide filaments having a diameter of 0.5 mm. Unit weight 420g /
m ² and total thickness 20 mm. There are irregularities on both the upper and lower sides, and there are many continuous voids inside, which provides sufficient air permeability and water permeability. It is also flexible and elastic as a whole, and has shape retention and proper strength.

The plant seed holding layer 50 comprises a flexible thin air-permeable non-woven sheet 52 on which grass seeds 5 are uniformly dispersed, and a protein-based flexible water-soluble grass seed holding film 51 is placed thereon. Laminated, germination of turf seeds,
It will not hinder the subsequent training. Although the turf seed 5 is a turf seed here, it may be a runner obtained from cut grass or the like.

The pile yarns 30 are woven from the core material layer 2 to the base web layer 1, so that the base web layer 1, the plant seed holding layer 50 and the core material layer 2 are integrally connected in a state in which they are difficult to disassemble. ing. Also, this pile thread 3
0, a large number of loop piles 30a are erected substantially evenly on the surface of the core material layer 2.
Form the flexible plant protection protrusion 3 described above.

The pile yarn 30 is 3000d / 39f
(D: denier, f: filament) polyamide bulk processed long fibers (commonly referred to as BCF nylon yarn), which are colored to look like natural grass by mixing green filaments and brown filaments, It has a water transfer property due to the capillary phenomenon and is woven with 5/16 inch gauge and 4 stitches. Core layer 2
The height of the pile (protective protrusion) is about 5 to 6 mm.

In this example, no backing material is provided below the base web layer 1, but when the pile 30a is formed into a cut pile, as shown by the two-dot chain line in FIG. 1 and FIG. The backing material 4 is applied and formed on the lower surface of 1 to prevent the pile yarn 30 from coming off. When the backing material 4 is provided, a water-insoluble but water-permeable backing material, for example, a mechanically foamed SBR latex is thinly applied to form the backing material, or a water-soluble backing material, For example, it may be formed by applying water-soluble polyvinyl alcohol, vinyl acetate emulsion or the like. When using a water-soluble backing material, fertilizer may be contained in at least a part thereof.

The plant growing sheet structure A described above is
Mass-produced into long products at the factory. It has flexibility as a whole and can be wound into a roll shape for storage, transportation and the like. When used, it is cut to an appropriate size. The structure A cut to an appropriate size is used for gardens, parks, river levees, golf courses, hills, coasts, and other soils of general households, and various buildings.
It will be installed in road planting zones, etc., and in sports facilities. This installation is easy and easy. It can also be relocated after installation. The plant-growing sheet structure A installed at a predetermined place is supplied with water or water containing turf-growing nutrients, the base web layer 1 absorbs and retains water, and the turf seeds 5 germinate, as shown in FIG. It grows to natural grass 6. At this stage, the structure A becomes the natural grass sheet structure B. The natural grass sheet structure B is also supplied with water or water containing turf growing nutrients, the base web layer 1 absorbs and retains water, the grass is maintained, and new growth occurs.

The roots 61 of the growing grass 6 reach the base web layer 1 through the residual non-woven sheet 52 in the plant seed holding layer 50, and from there, water or further water and nutrients dissolved therein are supplied. In addition, the pile yarn 30 woven from the core material layer 2 to the base web layer 1 and having water retention and water transfer properties absorbs water from the base web layer 1, or water and nutrients together, or water supplied from above, or Holds nutrients supplied with water.

Even when the backing material 4 is provided, if the backing material 4 is provided so that water can pass between the base web layer 1 and the outside below the base web layer 1, the base web layer 1 can absorb water such as the soil on which it is laid. On the contrary, it is also possible to release excess water to the soil or the like. Further, when the backing material 4 is formed of a water-soluble material and at least a part of the backing material is made to contain fertilizer, the backing material is dissolved as the structure is used, and the nutrients are also supplied from here. When there is a portion containing fertilizer, it is not always necessary to include nutrients in the water supply. It is also possible hereby to omit external nutrient supply.

For both the plant-growing sheet structure A and the natural grass sheet structure B, when a plurality of sheets having appropriate dimensions are arranged side by side, if necessary, those adjacent to each other, for example, the base web layer 1 part thereof With sewing machine sewing, surface fasteners, etc. can be connected and integrated. This integration brings about installation stability and is preferable in sports facilities and the like.

Further, when a plurality of sheets of appropriate size are placed side by side in contact with each other, even if the water or water containing growth nutrients is locally supplied to all of them, the base The web layer 1 serves as a water flow path, and water and nutrients are uniformly supplied as a whole. In the plant-growing sheet structure A, the turf seed 5 is between the core material layer 2 and the base web layer 1, and the plant protection protrusions 3 are formed on the surface of the core material layer 2. Since it is difficult to move from the position and is stably held at that position, germination from the seed, the roots that extend are also stably held at that position, and even if the weather, irrigation, etc. It is difficult for shoots and roots to move and leak. In the natural grass sheet structure B as well, since the grass roots 61 enter the core material layer 2 and the base web layer 1 or between the plant protection protrusions 3,
The turf is hard to move or flow out even by irrigation. Therefore, the plant growing sheet structure A is also suitable for growing plants on an inclined surface where rainwater or irrigation flows easily, or on a windy coast or in the vicinity thereof, and the natural grass sheet structure B also flows rainwater or irrigation water. It is also suitable for maintaining and cultivating natural grass on easy slopes, on windy coasts or in the vicinity. From these points, it is easy to manage the growth of grass and the management after growth.

In both the plant-growing sheet structure A and the natural grass sheet structure B, the whole is integrated, and therefore, it is difficult to decompose even when an external force is applied, and the plant-protecting projections are formed on the surface of the core material layer 2. In the plant growing sheet structure A, seeds 5 of the plant seed holding layer 50 and sprouts, roots and the like from the plant seed holding layer 50 are loaded by the core material layer 2 and the plant protection protrusions 3 from above or from the side. Protected against hooked loads,
Also in the natural grass sheet structure B, the shoots of the grass 6, roots 61
And the like are protected by the core material layer 2 and the plant protection protrusions 3 against a load from above and a pulling load from the side. Therefore, it can withstand use even when laid in a sports facility, and
From these points as well, it is easy to grow grass and maintain it after growth.

Further, the pile yarn 30 is colored in a color similar to that of grass, and therefore the plant protection protrusions 3 on the surface of the structure are also colored. Therefore, in the plant growing sheet structure A, grass seeds 5 are used. Before the turf 6 grows, or even if the grown turf 6 is partially damaged or lost due to scraping, withering, etc., the unsightlyness is reduced to that extent. Even if there is some damage or loss due to chipping or withering of the grass 6, the color of the protective projection 3 similar to that of the surrounding grass 6 appears, and the unsightlyness is reduced accordingly.

Further, in both the plant-growing sheet structure A and the natural grass sheet structure B, even when seeds of weeds are present in the installation target places, the base web layer 1 and other parts which are heavy due to water retention Since it can be installed so that it can be pressed down by the weight of the weeds, weeds can be suppressed so much that the labor required for the treatment of weeds can be saved, and in this respect also grass cultivation management and maintenance management after growth are easy. .

In both the plant-growing sheet structure A and the natural grass sheet structure B, the base web layer 1 can supply water to absorb water, retain water, or compress the water to drain it. The amount of water retention can be easily adjusted, and by adjusting the amount of water retention, water supply or even water supply and nutrient supplementation can be easily controlled, and turf growth management and maintenance management after growth can be easily performed.

Since the base web layer 1 can be adjusted in weight by adjusting the amount of water retained, the weight adjustment can reduce the weight of the structures A and B as a whole to facilitate the transfer or to increase the weight to the place where the structure is installed. The installation stability can be increased, and even when installed in a place where a strong force is applied by the player's play such as a sports facility, the installation stability that can be used can be obtained.

[0056]

According to the present invention, it is possible to provide a plant growing sheet structure for growing plants such as grass having the following advantages. Cut the size as it is, or cut it to an appropriate size as necessary, to the soil of general household gardens, parks, river dikes, golf courses, hills where rainwater flows easily, windy coasts, and various buildings and roads. It can be easily and easily installed in a planting zone or in a sports facility, and plants can be grown from plant species such as turf species that have been held in advance and can be relocated. Even in the case of wind and rain, irrigation, etc., the seeds of the plant that have been held in advance and the sprouts and the like from it do not easily move or flow out, and the plant management is accordingly easy. The whole is integrated and difficult to decompose, and the seeds of the plant held and the shoots, roots, etc. from it are protected against the load from above and the pulling load from the side. It is easy to manage plant growth and maintenance after growth. Even before the plant grows, or when the grown plant is damaged or lost due to scraping, withering, etc., the unsightlyness can be reduced. Even if weed seeds are present, they can be laid so as to press them down to prevent weeds from growing, which makes it easy to grow and maintain the plants. It is possible to adjust the weight, which makes it easier to relocate by reducing the weight, and it is possible to increase the installation stability at the installation target place by making it heavy, and it is possible to obtain installation stability that can be used even in sports facilities etc. . It is possible to produce long products.

Further, according to the present invention, it is possible to provide a natural grass sheet structure having the following advantages. Cut it as it is, or cut it to an appropriate size if necessary, for soil such as gardens of general households, parks, river dikes, golf courses, hills, coasts, various buildings, planting zones of roads, etc. It can be easily and easily installed in sports facilities and can be relocated. The grass does not easily move or flow out due to weather, irrigation, etc., and the grass is easier to manage. The whole is integrated and difficult to disassemble, and the shoots, roots, etc. of the turf are protected against the load from above and the hanging load from the side, so it can also be used in sports facilities. From the point of view, turf management is easy. Even if the grass is damaged or lost due to scraping or withering, its unsightlyness can be reduced compared to the conventional natural grass sheet structure.Even if there are weed seeds, weeds are laid so as to press them down. It is possible to suppress the growth of grass, and it is easy to manage the grass, and it is possible to adjust the weight, which makes it easier to relocate and reduce the weight, and it is possible to increase the stability of the installation at the installation site by making it heavy. It is possible to obtain installation stability that can be used even in sports facilities and the like. It is possible to produce long products.

In addition to the above, when the plant growing sheet structure and the natural grass sheet structure of the present invention are cut to an appropriate size or formed from the beginning to an appropriate size and a plurality of sheets are combined and arranged side by side. , Sew adjacent ones with a sewing machine,
It can be easily joined by using a sheet fastener or the like, and the installation stability as a whole can be obtained in this respect as well. When installing a plurality of sheets of appropriate size, adjacent ones, especially when placing the base web layers having water-retaining properties side by side, place water or water containing plant growth nutrients locally on them. Even when supplying, the base web layer functions as a water flow path,
Water and nutrients are supplied uniformly throughout. Therefore, in this respect as well, it is easy to manage plant growth and maintenance after growth.

When a backing material is provided below the base web layer, one or more of protection of the base web layer, shape retention, adjustment of the cushioning property of the structure, adjustment of the weight of the structure, etc. are required. Can be achieved.
Further, when the backing material is provided so that water can pass between the base web layer and the outside thereof, the base web layer absorbs the moisture of the soil in which the structure is installed, or the excess moisture of the web is discharged to the soil. Can't be prevented.

When a part or all of the backing material is made of a water-soluble material containing fertilizer, it may be necessary to reduce the supply of nutrients from the outside, depending on the amount and type of the fertilizer. It can be omitted, and it saves the trouble. A fibrous material for forming plant protection projections is woven from the core material layer to the base web layer, and when the plant protection projections are formed on the surface of the core material layer by this fibrous material, the base web is formed on the fibrous material. Layer and the core material layer can be contributed to the integrated connection, and for the plant growing sheet structure, the plant species holding layer can also be contributed to their integrated connection, and the overall structure can be simplified accordingly. Can be converted. In this case, at least a part of the fibrous material woven into the base web layer can be prevented by a backing material provided under the base web layer. The whole becomes more difficult to disassemble.

When the fibrous material for forming plant protection projections has water-transporting property, the management of growing and post-growing of the plant becomes easier. Pile yarn is adopted as a fibrous material for forming plant protection projections, and when the plant protection projections are in the form of pile projections or pile-like projections formed from the pile threads, such plant protection projections are formed on the core material layer surface. Can be provided easily and easily.

When the net body core material layer is adopted as the core material layer, the air permeability and water permeability to the plant roots can be made sufficient. Further, when the base web layer is a web layer made of cotton including water absorbent cotton made of water-absorbent fibers, the water retention amount of the base web layer, and thus the weight thereof, can be easily adjusted in such a wide range.

When the entire structure is flexible enough to be wound in a roll, it can be easily transported by rolling in a roll.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an example of a plant growing sheet structure according to the present invention.

FIG. 2 is a schematic sectional view of an example of a natural grass sheet structure according to the present invention.

[Explanation of symbols]

 A plant growing sheet structure B natural grass sheet structure 1 base web layer 2 core material layer 3 core material layer 1 surface plant protection protrusion 30 pile yarn 30a loop pile 4 backing material 50 plant seed holding layer 5 grass seed 51 grass seed Pressing film 52 Nonwoven sheet 6 Turf 61 Turf root

Claims (12)

[Claims] 1. A base web layer, a plant seed holding layer for holding and germinating plant seeds such as turf seeds, and a core material layer are stacked in this order from bottom to top and integrally connected. , The base web layer has water retention, the core layer has a large number of voids that give water permeability, breathability and shape retention, and a large number of flexible plant protection protrusions on its surface. A plant-growing sheet structure for growing plants such as turf, which is provided. 2. The plant growing sheet structure according to claim 1, wherein a backing material is provided below the base web layer so that water can pass between the base web layer and the outside thereof. 3. The plant growing sheet structure according to claim 2, wherein a part or all of the backing material is made of a water-soluble material containing fertilizer. 4. The plant protection protrusion-forming fibrous material is woven from the core layer to the base web layer, and the plant protection protrusion is formed on the surface of the core layer by the fibrous material. Item 4. A plant growing sheet structure according to any one of items 1 to 3. 5. The plant protection protrusion-forming fibrous material is woven from the core material layer to the base web layer, and the plant protection protrusion is formed on the surface of the core material layer by the fibrous material. 4. The plant growing sheet structure according to claim 2, wherein at least a part of the fibrous material woven into the base web layer is retained by the backing material. 6. The plant growing sheet structure according to claim 4, wherein the fibrous material has a water-transporting property. 7. The plant growing sheet structure according to claim 4, wherein the fibrous material is a pile yarn, and the plant protection protrusions are pile protrusions or pile-like protrusions. 8. The core material layer is a net core material layer.
7. The plant growing sheet structure according to any one of 1 to 7. 9. The plant growing sheet structure according to claim 1, wherein the base web layer is cotton containing water absorbent cotton made of water absorbent fibers. 10. The plant growing sheet structure according to any one of claims 1 to 9, which is flexible enough to be wound in a roll shape as a whole. 11. The plant growing sheet structure according to claim 1, wherein the plant seed holding layer holds grass seeds. 12. A natural grass sheet structure obtained by growing grass from the grass seed in the plant growing sheet structure according to claim 11.