JPH08266151A - Plant rearing sheet structure for rearing plant of lawn or the like and natural lawn sheet structure - Google Patents

Abstract

PURPOSE: To provide both a sheet structure for rearing plants, capable of readily rearing plants and easily performing the control after the growth and good in installation stability and a natural lawn sheet structure capable of being simply and easily installed in a desired place and readily performing the maintenance control of lawn. CONSTITUTION: This sheet structure B for rearing plants is obtained by superposing a core material layer 1 and a cover web layer 2 in the order from the lower to the upper parts, integrally connecting the layers or further previously installing a plant seed holding layer 4. The core material layer 1 has many voids capable of providing water and air permeabilities and further shape retaining properties and the cover web layer 2 is provided with many protrusions 3 having flexibility for protecting the plants on the surface thereof. Furthermore, the natural lawn sheet structure comprises lawn reared in the structure R.

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 cultivating plants and greening, and a natural turf sheet structure obtained by growing turf with the structure.

[0002]

2. Description of the Related Art When cultivating plants such as natural grass and flowers for greening gardens of general households, river banks, parks, golf courses and other soils, various structures, roads and other planting zones ,
Usually, it is cultivated by sowing plant seeds or planting seedlings directly in those soils or planting zones. 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.

Such a natural grass sheet structure is used for laying in gardens of general households, river dikes, parks, golf courses, hills, coasts, dunes, etc., various buildings, planting zones such as roads, etc. You can also 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. And it was laid in the natural grass growing place,
Japanese Patent Laid-Open No. 62-25 / 1987, in which soil and sand, lawn runners, chemical fertilizers and water retaining materials are put in the holes to grow grass.
Japanese Patent No. 907 discloses a seeded mat in which a turf seed is mixed and held in a mat containing rock wool as a main component.
No. 91015 discloses that rock wool is integrated with aggregates having tip portions at approximately equal intervals and bottom portions formed in a lattice pattern.
Japanese Unexamined Patent Publication No. 2-104216 discloses a vegetation mat in which lawn wool is encased with grass seeds, disassembles and expands cut grass, arranges linear runners on a net having an appropriate mesh spacing, and the upper surface thereof is made of water-soluble paper. Japanese Patent Application Laid-Open No. 3-247204 discloses covering a long winding roll product by wrapping a side sheet and a lower surface of a floor material for turf growth, which is a mixture of a fertilizer and an inorganic lightweight soil member, with a lower sheet. The upper sheet is provided on the upper surface of the, and the grass seed holding member is arranged on the lower surface side of the upper sheet,
Disclosed are natural turf floors in which a mesh-like wavy net is provided in the floor material between the turf seed holding member and the lower sheet, and the upper and lower sheets are interconnected by sewing threads, staples, etc. .

[0007]

However, soils such as gardens of general households, river dikes, parks, golf courses, hills where rainwater easily flows, and windy and unstable sandy beaches,
When cultivating plants such as natural grass and flowers in sand dunes, various buildings, planting zones such as roads, sow the plant species or plant plant seedlings directly in those soils, sands, planting zones, etc. When cultivating, the seeds planted, seedlings planted, fertilizers applied, etc. are easily washed away by rain, wind, irrigation, etc.
Furthermore, there is a problem that it is not stable due to fluctuations in the underlying sand. 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 and used in gardens of general households, river banks, parks, golf courses, etc., and in various buildings and road planting zones.
Although the above problems caused by sowing seeds directly on the soil can be eliminated and it can be used for the greening of sports facilities, there are 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, when the turf is scraped or damaged, the material below appears similarly and becomes unsightly, and it is difficult to use in places such as sports facilities where there are many opportunities to be stepped on. . In addition, the natural grass sheet structures described in any of the publications are not satisfactory in installation stability, and there are difficulties in laying and using on river slopes, slopes such as hills, etc., especially when installed in sports facilities, Unstable and unsuitable to play on.

Therefore, a first object of the present invention is to provide a plant growing sheet structure for growing a plant such as grass having the following advantages. Cut as it is, or cut it to an appropriate size if necessary, such as gardens of general households, parks, river levees, golf courses, soils such as hills where rainwater easily flows, and windy and unstable sandy beaches, Can be easily and easily installed in sand dunes, various buildings, planting zones on roads, etc.
A plant-growing sheet structure capable of sprouting and cultivating plant species such as turf seeds and flowers, which can also be relocated. A plant growing sheet structure in which seeds of a plant planted and sprouts from the plant do not easily move or flow out due to wind and rain, irrigation, fluctuations in the ground, and the like, and thus the plant growing sheet management is easy. The whole is integrated and difficult to decompose, and the seeds of the sown plant and the sprouts, roots, etc. from it are protected against the load from above and the pulling load from the side. A plant-growing sheet structure that is easy to grow and maintain and to maintain after growth. A plant growing sheet structure capable of reducing unsightly before a plant grows or even when the grown plant is damaged or lost due to scraping, withering, or the like. A plant growing sheet structure that has good installation stability in the installation target location, and can be installed on a slope such as a dike or a hill, in addition to being able to be relocated. Even if there are seeds of weeds, a plant growing sheet structure that can be laid so as to hold down the weeds and suppress the growth of weeds, and that is the reason why plant growing management and maintenance management after growth are easy. A plant growing sheet structure that can be produced as a long product.

The present invention also provides a plant growing sheet structure for growing plants such as turf, which has previously held plant species such as turf species, and has the following advantages. This is the second issue. Cut as it is, or cut it to an appropriate size if necessary, such as gardens of general households, parks, river levees, golf courses, soils such as hills where rainwater easily flows, and windy and unstable sandy beaches, Can be easily and easily installed in sand dunes, various buildings, planting zones on roads, etc.
A plant-growing sheet structure capable of growing a plant from a plant species such as a turf species that has been held in advance and can be relocated. A plant-growing sheet structure in which seeds of a plant held in advance and sprouts from the plant are unlikely to move or flow out due to wind and rain, irrigation, fluctuations in the base, and the like, and thus the plant growth management is 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. A plant growing sheet structure that facilitates plant growing management and maintenance after growth. A plant growing sheet structure capable of reducing unsightly before a plant grows or even when the grown plant is damaged or lost due to scraping, withering, or the like. A plant growing sheet structure that has good installation stability in the installation target location, and can be installed on a slope such as a dike or a hill, in addition to being able to be relocated. Even if there are seeds of weeds, a plant growing sheet structure that can be laid so as to hold down the weeds and suppress the growth of weeds, and that is the reason why plant growing management and maintenance management after growth are easy. A plant growing sheet structure that can be produced as a long product.

Further, the present invention adopts a plant growing sheet structure of the type in which the above-mentioned plant species according to the present invention is sown later, or a plant growing sheet structure of the type in which plant species are held in advance, A third object is to provide a natural grass sheet structure obtained by cultivating natural grass from the above, which has the following advantages. 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 as it is, or cut it to an appropriate size if necessary, such as gardens of general households, parks, river levees, golf courses, soils such as hills where rainwater easily flows, and windy and unstable sandy beaches, Can be easily and easily installed in sand dunes, various buildings, planting zones on roads, etc.
A natural grass sheet structure that can also be relocated. Turf may move due to wind and rain, irrigation, fluctuations in the ground, etc.
A natural turf sheet structure that is hard to leak and that is easy 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. Natural turf sheet structure that makes turf management easy from the viewpoint. A natural turf sheet structure that can reduce unsightly compared to a conventional natural turf sheet structure even when the turf is damaged or lost due to abrasion or withering. A natural grass sheet structure that has good installation stability at the target installation location, and can be installed on a slope such as an embankment or a hill in addition to being able to be relocated. Even if there are seeds of weeds, the natural grass sheet structure can be laid so as to hold down the seeds and suppress the growth of weeds. A natural grass sheet structure that can be produced as a long product.

[0014]

A plant growing sheet structure for growing plants such as turf according to the present invention, which solves the first problem, has a core material layer and a cover web layer in this order from the bottom. The core material layer has a large number of voids that give water permeability and air permeability and has shape retention, and the cover web layer is formed on the surface of the core material layer. It is characterized in that a large number of flexible plant protection projections are provided.

Further, the plant growing sheet structure of the present invention which solves the above-mentioned second problem is a plant growing sheet structure which solves the above-mentioned first problem. A holding layer is provided.
In addition, the natural grass sheet structure of the present invention that solves the third problem is obtained by sowing seeds on the plant growing sheet structure that solves the first problem or by growing a plant that solves the second problem. It is a natural grass sheet structure obtained by growing grass from these grass seeds by, for example, changing the grass species to be held in the sheet structure.

The cover web layer in the plant-growing sheet structure of the type in which the plant species according to the present invention is sown later may be any one as long as the plant species sown thereon can germinate and the roots can enter. The cover web layer in the plant growing sheet structure of the type that previously holds the plant species according to the present invention may be one in which the held plant species germinates and can grow above the cover web layer, but any type In the plant-growing sheet structure (1) and the natural grass sheet structure (1) according to the present invention, it is desirable that the cover web layer has water retention property. As for this water retention property, it suffices to be able to absorb and retain water by pouring water, pouring water, or immersing it in water. Furthermore, it is desirable that the amount of water retention can be adjusted. If this water retention amount can be adjusted, the weight of the plant-growing sheet structure and the natural grass sheet structure of the present invention can be adjusted by that much, and the water retention amount can be adjusted so that plant species such as natural grass, sprouts, and grown plants can be adjusted. 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. Regarding the adjustment of the water retention amount, not only the adjustment by the amount of water to give, but also the compression,
It is desirable to be able to adjust by draining by squeezing or tilting.

In any of the plant growing sheet structures according to the present invention and also in the natural grass sheet structure,
As a cover web layer having water retention and an adjustable water retention amount, for example, a web layer formed by entangling various fibers (for example, a web layer formed of cotton), a woven fabric of various fibers, a knitted fabric, or a combination thereof. Can be considered. Among these, the cotton web layer has good water absorption and water retention,
Also, water can be easily discharged by compressing, squeezing, etc., and the weight can be adjusted by these, and the amount of water can be adjusted to easily control the amount of water supplied to seeds such as natural grass, sprouts, grown plants, etc. Furthermore, it is desirable to add nutrients to the retained water so that the amount of nutrients supplied can be controlled.

When the cover 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

In any case, the cover web layer is a natural grass sheet structure before the plant grows from the seeds sowed or from the seeds of the plant seed holding layer, when the grown plants are scraped or withered, or the natural grass sheet structure. At least the surface part of the cover web layer is made to resemble the color of a plant, for example, so that the cover web layer does not become unsightly when grass is scraped or withered in (for example, green color, brown stripes and green color stripes are mixed) It may be colored in a colored state.

In any of the plant growing sheet structures according to the present invention and also in the natural grass sheet structure,
The core material layer is water-permeable, has a shape-retaining property with a large number of voids that provide air permeability, does not interfere with plant growth, and has good installation stability in the installation site such as soil and sand. Alternatively, it is desirable if it plays a role of maintaining the strength of the plant growing sheet structure or the natural grass sheet structure and ensuring the integrity during transportation. For example, a three-dimensional mesh structure formed by intertwining synthetic resin fibers. , A net-like core material layer such as a net-like cage made of synthetic resin fibers or the like, a state in which a plurality of small net cages are connected in a row, a net plate made of synthetic resin fibers or the like, or a stack of a plurality of such net plates In addition to the above, there are various conceivable types such as a net core layer loaded with a bulk material, sawdust, and wood chips. In any case, it is desirable to have flexibility as a whole to improve familiarity with the installation place of the plant growing sheet structure or the natural grass sheet structure, and even a little at the structure installation place. It is desirable to engage or bite to further increase the installation stability, and also to have appropriate elasticity in order to improve the feel of walking on such structures and sports play (especially in the case of natural grass sheet structures). It is desirable to have

From these points, the net body core layer is preferable, and in particular, from the viewpoint of flexibility, elasticity, a large number of voids, strength, and the like, it is engaged with soil, sandy land, etc. at the installation site. A three-dimensional network structure formed by intertwining synthetic resin fibers is one of the desirable ones from the viewpoint that the installation stability can be increased by, for example, cutting in, and the integrity of the structure during transportation can be ensured. . Examples of such a three-dimensional network structure include a three-dimensional network structure formed by intertwining synthetic resin fibers made of polyamide, polypropylene, vinyl chloride resin or the like and having a diameter of about 0.1 to 0.8 mm.

As such a three-dimensional mesh structure, for example, a mesh structure manufactured by Zeon Kasei Co., Ltd. (trade name: Zeomat 7020) can be used. The plant species-retaining layer in the plant growing sheet structure provided with the plant species-retaining layer according to the present invention is on the cover web layer, or in the cover web layer, or between the core material layer and the cover web layer, Alternatively, it can be provided in two or more parts of these, but from the viewpoint of ease of installation and protection of plant species, it is typically considered to be provided between the core material layer and the cover web layer.

The plant-species retaining layer may be one capable of retaining plant species such as turf species while preventing their migration and germinating, but it is preferable 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 other than the seed is flexible so that it is well adapted to the core material layer and the cover web layer. Various types of non-woven sheets and base sheets such as water resistant ones and water soluble ones can be considered. Further, the seed pressing film does not necessarily need to be water-soluble.

When the plant species-retaining layer is provided in the cover web layer, the plant species may be directly incorporated in the layer so that part of the cover web layer also serves as part of the plant species-retaining layer. In any case, in the structure according to the present invention, the cover web layer and the core material layer, or the cover web layer, the plant species holding layer and the core material layer may be connected to each other by a thread or other means. When a cover web layer made of cotton is adopted, a part of the cotton fibers constituting the cover web layer is connected to the core material layer, or the plant seed holding layer is entangled and connected to the core material layer to connect the whole. Alternatively, a thread or other connecting means may be employed together therewith.

In any case, a backing material is provided below the core material layer for the purpose of one or more of protection of the core material layer, adjustment of cushioning property of the whole structure, adjustment of structure weight and the like. It may be provided. Such backing material is obtained by sticking a sheet-shaped backing material to the lower surface of the core material layer with an adhesive, stacking the sheet-shaped backing material on the core material layer and connecting them by a connecting means such as a thread, or a combination thereof. The backing material may be provided in the lower part of the material layer by forming it in a sheet shape, or by applying the backing material to the lower surface of the core material layer.

The backing material of any of the plant-growing sheet structures according to the present invention and the natural grass sheet structure of the present invention is a so-called permanent type which is permanently installed at a certain place. Is provided so that water can pass between the core layer and the outside, and in the case of a so-called temporary type that may be moved in some cases, it is considered to be provided so as to disable such water passage. However, regardless of whether it is a permanent type or a temporary type, in order to utilize the water content 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, a core material layer and It may be provided so that water can pass between the outside. In this case, the backing material itself may or may not have water permeability. By providing the backing material having no water permeability intermittently, water can be passed between the core material layer and the outside thereof.

In any case, the backing material provided in the core layer may be made of a water-soluble material in which a part or all of the backing material contains fertilizer. In any plant-growing sheet structure according to the present invention, and also in the natural grass sheet structure, a large number of plant protection protrusions having flexibility are provided on the surface of the cover web layer. A fibrous material for forming the protective protrusions, which is made of synthetic resin, natural products, or a combination thereof, can be provided by adhering to the cover web layer, weaving, or the like, so that the protective protrusions extend from one side of the mesh body. It is also possible to attach an injection-molded product to the cover web layer, attach it by sewing or the like, or weave a fibrous material for forming protective protrusions from the cover web layer to the core material layer, and use this fibrous material. It is also possible to form plant protection protrusions on the surface of the cover web layer. In this case, a cover web layer and a core material layer, or a cover web layer, a plant seed holding layer and a core material layer are integrally formed on the fibrous material alone or together with a connecting means such as another thread. It is also possible to contribute to the connection.

When a fibrous material for forming plant protection projections is woven from the cover web layer to the core material layer to form the plant protection projections on the surface of the cover web layer with the fibrous material, among the fibrous materials, At least a part of the portion woven in the core material layer may be retained by the backing material. In this case, the backing material is not only applied to the core material layer in order to obtain a retaining effect, but is also attached to the lower surface of the core material layer so as to fix the fibrous material. It is conceivable that the backing material is formed in a sheet shape and provided, or the backing material is applied to the lower surface of the core material layer to form the backing material. The backing material is used for one or more of the purpose of protecting the core layer, adjusting the cushioning property of the structure, adjusting the weight of the structure as described above, and also for preventing the fibrous material from coming off. However, even if one or more of the protection of the core layer, the adjustment of the cushioning property of the structure, the adjustment of the structure weight, etc. may be achieved as a result, the initial aim is to simply use fibrous materials. It is also possible to provide a backing material in order to obtain only the retaining effect of the material.

In any case, pile yarn can be adopted 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 by a loop pile, a pile-shaped protrusion (for example, a protrusion by a chain stitch), or a combination of two or more of these. Loop pile is preferable from the viewpoint of improving the protection strength and cushioning property of plant species and the like. Further, when the cut pile is adopted in the plant-growing sheet structure in which the plant seed is later sown, the sown seed is likely to enter between the plant protection protrusions, and thus the scattering and outflow of the seed due to the wind or the like can be well prevented. Two or more types of piles may be adopted to combine these effects.

Such a fibrous material, whether or not it is a pile thread, has plant protection projections formed on the surface of the cover web layer, thereby plant species to be sown thereon, sprouts or roots thereof. , A plant species that can protect grown plants or plant species in a pre-established plant species holding layer, sprouts and roots from it, strength (tensile strength etc.) that can protect grown plants, waist strength, etc. There may be various types, such as a single fiber, a bundle of a plurality of single fibers, and a bundle of a plurality of single fibers. For example, a single thick denier filament yarn such as polyamide, polypropylene, or polyester, or a yarn composed of a plurality of these yarns can be mentioned. In any case, the cross-sectional shape of the filament used for forming the plant protection protrusion may be various, such as a circular cross-section or a rectangular cross-section. In any case, for the growth of the plant, as the fibrous material for forming the plant protection protrusions, whether it is a pile thread or not, a material having a water-transporting property may be adopted. . 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. For example, when a filament is used as the fibrous material, the filament may have a hollow cross section partially or wholly, or may be twisted in a spiral or spiral shape.
An example is one having water retention and water transferability, and P
It is also possible to exemplify a monofilament twisted in a spiral shape in section, which is disclosed in International Publication No. WO90 / 15193 based on a CT application and has excellent water retention and water transfer properties for artificial turf.

In any case, the height of the plant protection projections from the surface of the cover web layer should be selected from the viewpoint of plant protection and the like so that the grown plant 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 protrusions on the surface of the cover web layer can be appropriately selected within a range where plant protection can be achieved and plant growth is not hindered.

In any case, in the plant-growing sheet structure, before the plant grows from the sown seed, or before the plant grows from the plant seed of the plant seed holding layer provided in advance, the grown plant is To prevent plant protection protrusions from becoming unsightly when shaving, withering, etc., or when turf is scraping or withering in a natural turf sheet structure,
For example, to make the projections resemble the color of a plant (for example, in a green color, or in a state where brown streaks and green streaks are mixed)
You may color it. In any case, the plant-growing sheet structure and the natural grass sheet structure according to the present invention have a cover web layer and a core material layer, or a cover web layer and a plant species holding layer, in order to facilitate transportation and storage. Each of the layers and the core layer may be flexible so that the whole can be rolled.

[0033]

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 necessary, and are used for gardens of general households, parks, river banks, golf courses, hills, etc. It can be easily and easily installed on soils, beaches and dunes, various buildings, road planting zones, etc., and even relocated if necessary.

Regarding the plant-growing sheet structure of the type in which plant species are later sown, plant species such as turf species and flowers are sown, and they are sown under an appropriate temperature condition or further with water or By supplying water containing plant-growing nutrients, the plant species germinate and the desired plant grows. For the plant growing sheet structure provided with a plant species holding layer in advance,
Under appropriate temperature conditions, or additionally, water or water containing plant-growing nutrients is supplied, and the plant species in the plant species holding layer germinate and the plants grow.

Also for the natural grass sheet structure, water or water containing turf growing nutrients is supplied to the natural grass sheet structure, so that the grass is maintained and also newly grown. For any of the plant-growing sheet structures, and also for the natural grass sheet structure, when arranging a plurality of those having appropriate dimensions side by side, if necessary, adjoining ones, for example, a cover web layer portion, or a core. In the material layer portion, or both of them, they can be integrated by being joined to each other by a thread, sewing with a sewing machine, a surface fastener or the like. This integration provides installation stability.

The above-mentioned sheet fastener is a fastener formed by a combination of a sheet female member provided with a large number of loops and a sheet male member provided upright with a plurality of engaging projections that can be engaged with and disengaged from the loop. A band-shaped (tape-shaped) male member (or female member) having a constant width is attached to the lower edge of the core material layer on the edge facing the adjacent core material layer by sewing, bonding, or the like, and in a structure adjacent to each other, The male member (or female member) at the lower edge portion of the lower surface of the core material layer is arranged so as to abut against each other, and the belt-shaped female member (or the female member) has a width about twice the width of the male member (or female member). It is conceivable that the male member) is brought into contact with these two male members (or female members) to interconnect adjacent structures.

Also, a plurality of structural bodies having appropriate sizes are
When adjacent ones are brought into contact with each other, particularly when the cover web layers are brought into contact with each other and arranged side by side, the cover web layer is provided even when, for example, locally supplying water or water containing growth nutrients to them as a whole. It plays the role of a water channel, and it is easy to uniformly supply water and nutrients. In addition, the roots of growing plants usually reach the core material layer or even below the core material layer, and can absorb necessary water or even water and nutrients.

In the plant growing sheet structure of the type in which plant seeds are later sown, the seeds sowed enter between the plant protection protrusions on the surface of the cover web layer or reach the cover web layer, and from that position. It is difficult to move and is stably held at that position, and germination from the seed and the roots that are extended are also stably held at that position, so even if the wind and rain, irrigation, fluctuation of the ground, etc. It is difficult for the shoots, roots, etc. to move and flow out.

In a plant-growing sheet structure provided with a plant species holding layer in advance, the plant species are stably held in the plant species holding layer, and germination and extending roots from the seed are also held substantially at that position. Therefore, it is difficult for the seeds, sprouts and roots from them to move and flow out due to wind and rain, watering, and changes in the ground.
Even in the natural grass sheet structure, the grass roots usually enter the core material layer, the cover web layer, or the like, so that wind, rain, irrigation,
It is difficult for the grass to move or flow out even if the base material changes.

All of the plant-growing sheet structures and the natural turf sheet structure are wholly integrated, and therefore are not easily decomposed even when an external force is applied, and the plant protection protrusions are formed on the surface of the cover web layer. In the plant growing sheet structure of the type to be used by sowing the plant species later, the seeds of the plant sowed and the sprouts from it,
The roots and the like are protected against the load from above and the lateral loading load by the protective protrusions, and in the plant growing sheet structure in which the plant species holding layer is provided in advance, seeds of the plant species holding layer and sprouts from it , The roots and the like are protected against a load from above or a lateral pulling load by one or more of the plant protection protrusion, the cover web layer and the core material layer, and even in the natural grass sheet structure, the grass roots, One or more of the core material layer, the cover web layer, and the plant protection protrusions protect the turf shoots and the like against a load from above or a pulling load from the side.

Further, the plant protection projections provided on the surface of the cover web layer, or at least the surface portion of the cover web layer can be colored, and by appropriately coloring, in the plant growing sheet structure, from the seed to the plant. Before the plant grows, the plant that has grown is scraped, 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. It can be further reduced.

For any of the plant-growing sheet structures and also for the natural grass sheet structure, the core material layer can be laid so as to press down the weed seed even if the seed layer is under the core material layer. By doing so, weed growth can be suppressed. For both the plant growing sheet structure and the natural grass sheet structure, the core material layer is stably installed on the soil, sandy land, etc. of the structure installation location, so it can be relocated as a whole structure Good installation stability in place.

In both the plant growing sheet structure and the natural grass sheet structure, when the cover web layer has water retention, the water retention amount is adjusted by adjusting the amount of water supplied to the cover web layer. As a result, the weight of the entire structure can be adjusted, and the weight adjustment can reduce the weight of the entire structure to facilitate relocation and increase the installation stability at the installation location of the structure.

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

[0045]

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 for use in sowing seeds according to the present invention, which is shown in the state of sowing seeds. FIG. 2 is a schematic cross-sectional view of an example of a plant growing sheet structure having a plant species holding layer according to the present invention, showing a state in which turf seeds are held. FIG. 3 is a schematic sectional view of an example of a natural grass sheet structure according to the present invention. The natural grass sheet structure shown in FIG. 3 is in a state in which grass seeds have germinated and grown in the plant growing sheet structure shown in FIG. 1 or 2.

In the plant growing sheet structure A shown in FIG. 1, the core material layer 1 and the cover web layer 2 are superposed in this order from the bottom to the top and are integrally connected to each other. A large number of flexible plant protection projections 3 are provided. The plant growing sheet structure B shown in FIG. 2 is the same as the structure shown in FIG. 1 except that the core material layer 1 and the cover web layer 2 are provided.
And the plant species holding layer 4 is sandwiched between and.

In both of the plant growing sheet structures shown in FIGS. 1 and 2, the core material layer 1 is a three-dimensional mesh structure formed by intertwining synthetic resin fibers, which is manufactured by Zeon Corporation. Zeomat 7020 is made by intertwining polyamide filaments with a diameter of 0.5 mm.
The thickness is 20 g / m ² and the total thickness is 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. Furthermore, it also contributes to ensuring the integrity of the structure during transportation of the structure.

The cover web layer 2 is made of synthetic fiber of 6 denier polyester fiber 50% cotton and water absorbent acrylic fiber of 5 denier (Lanseal F manufactured by Toyobo Co., Ltd.).
Mixed with 50% water absorbent cotton consisting of 100 g / m ²
And a cotton web layer. In the plant-growing sheet structure B, the plant-species retaining layer 4 has the grass species S uniformly dispersed and arranged on a flexible thin breathable non-woven sheet 41, from which a protein-based flexible water-soluble turf is placed. Seed holding film 42
It is a laminated sheet of turf that does not interfere with the germination of turf seeds and their subsequent growth. The turf seed S is turf seed here, but it may be a runner obtained from cut turf or the like.

In both of the plant-growing sheet structures shown in FIGS. 1 and 2, pile yarns 5 are woven from the cover web layer 2 to the core material layer 1, whereby the cover web layer 2 and the core material layer 1 are formed. (FIG. 1), or the cover web layer 1, the plant species holding layer 4, and the core material layer 1 (FIG. 2) are integrally connected in a state that is difficult to decompose. In addition, a large number of loop piles 51 are erected substantially evenly on the surface of the cover web layer 2 by the pile yarns 5, and the loop piles 51 form the flexible plant protection protrusions 3 described above. .

The pile yarn 5 is 3000d / 39f (d:
Denier, f: Filament) polyamide bulk processed filaments (generally called BCF nylon yarn)
The green filament and the brown filament are mixed to give a color similar to that of natural grass, and it has a water transfer property by a capillary phenomenon, and is woven with 5/16 inch gauge and 4 stitches. The height of the pile (protective protrusion) from the cover web layer 2 is about 5 to 6 mm.

In this example, the backing material is not provided below the core material layer 1, but when the pile 51 is formed into a cut pile, it is shown by a chain double-dashed line in FIG. 1 and FIG. 2 or further FIG. Thus, the backing material 6 is formed on the lower surface of the core material layer 1 to prevent the pile yarn 5 from coming off. When the backing material 6 is provided, a water-insoluble but water-permeable backing material, for example, 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 structures A and B described above
Is mass-produced in the factory at a long size. 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 (or B) cut into an appropriate size is used in the garden of a general household,
It will be installed in soils such as parks, river banks, golf courses, hills, coasts and dunes, various buildings, road planting zones, and 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 location is sown with the turf seed S here, and under appropriate temperature conditions, or in addition, water or water containing plant-growing nutrients. Is supplied, the turf seeds germinate and grow into natural turf 7 as shown in FIG. Further, the plant-growing sheet structure B installed at a predetermined location is supplied with water or water containing plant-growing nutrients under appropriate temperature conditions, whereby the turf seed S Grow into natural grass 7 as shown in FIG.

In any of the plant-growing sheet structures A and B, when the grass species S grows on the natural grass 7, it becomes a natural grass sheet structure C. The natural grass sheet structure C is also supplied with water or water containing turf growing nutrients to maintain the grass and also grow new. The roots 71 of the growing grass 7 usually penetrate into the core material layer 1 or further extend to the bottom of the core material layer 1 to absorb necessary water or further water and nutrients dissolved therein. Further, the cover web layer 2 can hold water or the water and the nutrients dissolved therein.

Further, the pile yarn 5 woven from the cover web layer 2 to the core material layer 1 and having a water-retaining property and a water-transporting property can contribute to the absorption of the moisture or the nutrient together with the moisture from the ground such as soil or the like. It is possible to retain the water supplied from or the nutrient supplied together with the water. Even when the backing material 6 is provided, this is used as the core material layer 1
If it is provided so that water can pass between it and the outside below it, it is possible to suck up moisture such as the soil where the structure is laid,
On the contrary, excess water can be released to the soil or the like. Further, when the backing material 6 is formed of a water-soluble material and at least a part thereof contains 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.

Regarding the plant growing sheet structures A and B and the natural grass sheet structure C, when a plurality of sheets of appropriate size are arranged side by side, if necessary, the adjacent ones may be arranged, for example, the cover web layer. 2, or the core material layer 1, or both of them, with a thread or the like, sewing with a sewing machine,
It can be integrated with each other by using sheet fasteners. 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 with each other in contact with each other, especially with the cover web layers in contact with each other, water or water containing growth nutrients is locally applied to the whole of them. Even when supplying, the cover web layer 2 plays a role of a water flow path, and it is easy to uniformly supply water and nutrients as a whole. In the plant-growing sheet structure A, the seeds S sowed enter between the plant protection protrusions 3 on the surface of the cover web layer 2 or reach the cover web layer 2 and are hard to move from that position, and stable at that position. The seeds sown, the sprouts, roots, etc. from the seeds move due to wind and rain, irrigation, fluctuations in the ground, etc. Hard to leak.

In the plant growing sheet structure B, the turf seed S is present between the cover web layer 2 and the core layer 1, and the plant protecting protrusions 3 are formed on the surface of the cover web layer 2. Since it is difficult to move from that position, and it is stably held at that position, germination from this seed, the roots that extend are also stably held at that position, due to wind and rain, irrigation, fluctuations in the ground, etc. However, it is difficult for the turf seed S and the sprouts and roots from it to move and flow out.

Also in the natural grass sheet structure C, the grass root 6
1 usually enters the core material layer 1 and is protected by the core material layer 1, the cover web layer 2 and the plant protection protrusions 3 thereon,
Even if the wind and rain, irrigation, changes in the ground, etc., the turf is difficult to move or flow out. Therefore, the plant growing sheet structures A and B are also suitable for growing plants on slopes where rainwater or irrigation flows easily, windy winds, or beaches where sandy grounds are liable to change, sand dunes, or their vicinity. The natural grass sheet structure C is also suitable for maintaining and growing natural grass in the same place. From this point of view, it is easy to manage the growth of grass and the management after growth.

All of the plant-growing sheet structures A and B and the natural grass sheet structure C are integrated as a whole, so that they are difficult to decompose even when an external force is applied, and the surface of the cover web layer 2 is not easily decomposed. Since the plant protection projection 3 is provided, in the plant growing sheet structure A, the sown grass seed S
And the new shoots, roots, and the like are protected by the protective projections 3 against a load from above or a lateral pulling load, and in the plant growing sheet structure B, the grass seed S of the plant seed holding layer 4 or The new shoots, roots, etc. of the turf are protected by the cover web layer 2 and the plant protection projections 3 against a load from above or a lateral pulling load. One or more of the material layer 1, the cover web layer 2 and the plant protection protrusions 3 provide protection against a load from above or a lateral load. Therefore, structures A, B,
C can withstand use even if it is laid in a place where a load is applied as a person walks or the like, and in these respects, turf cultivation and maintenance after growth are easy.

In each of the plant-growing sheet structures A and B and the natural turf sheet structure C, the core material layer 1 is partially engaged with or cut into the soil, sandy land or the like where the structure is installed. Since it is installed with good stability, it can be relocated as a whole structure, and it has good installation stability at the installation target site and can be used not only on sports facilities but also on slopes such as embankments and hills. Installation stability can be obtained.

Further, the pile yarns 5 are colored so as to resemble the color of the grass, and therefore the plant protection protrusions 3 on the surface of the structure are also colored. Therefore, the plant growing sheet structures A and B are formed.
In the above, even before the grass 7 grows from the grass kind S, or even if the grown grass 7 is partially damaged or lost due to chipping or withering, the unsightlyness is reduced to that extent, and the natural grass sheet structure Even in the body C, even if the lawn 7 is scraped, partially damaged or lost due to withering or the like, the color of the protection protrusion 3 similar to that of the surrounding lawn 7 appears, and thus the unsightlyness is reduced accordingly. .

Further, in any of the plant growing sheet structures A and B and the natural turf sheet structure C, even when there are seeds of weeds in the installation target place, they can be installed so as to press them down, so that weeds grow. It is possible to reduce the amount of time and labor required for the treatment of weeds, and in this respect as well, turf growth management and maintenance after growth are easy.

In any of the plant-growing sheet structures A and B and the natural grass sheet structure C, the cover web layer 2 can supply water to absorb water, retain water, or compress the water for drainage. The water retention amount can be easily adjusted, and the weight of the entire structure can be adjusted by adjusting the water retention amount.This weight adjustment reduces the weight of the entire structure and facilitates relocation, The installation stability at the body installation location can be increased. Further, by adjusting the water retention amount of the cover web layer 2, it is possible to easily control the water supply or the water supply as well as the nutrient supply, and thus the grass maintenance management and the maintenance management after the growth can be easily performed.

[0065]

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 as it is, or cut it to an appropriate size if necessary, such as gardens of general households, parks, river levees, golf courses, soils such as hills where rainwater easily flows, and windy and unstable sandy beaches, Can be easily and easily installed in sand dunes, various buildings, planting zones on roads, etc.
Plant seeds such as turf seeds and flowers can be sown and germinated, and can be reared. Due to wind and rain, irrigation, changes in the ground, etc., the planted seeds and sprouts from them are unlikely to move or flow out, which facilitates plant growth management. The whole is integrated and difficult to decompose, and the seeds of the sown plant and the sprouts, roots, etc. from it are protected against the load from above and the pulling load from the side. Fostering and maintenance after growth are easy. 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 it can be relocated, it has good installation stability at the installation target site, and it can be installed on a sloping surface such as an embankment or a hill in addition to sports facilities. 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 produce long products.

Further, according to the present invention, there is provided a plant growing sheet structure for growing plants such as turf, which has previously held plant species such as turf species, and has the following advantages. You can Cut as it is, or cut it to an appropriate size if necessary, such as gardens of general households, parks, river levees, golf courses, soils such as hills where rainwater easily flows, and windy and unstable sandy beaches, Can be easily and easily installed in sand dunes, various buildings, planting zones on roads, etc.
Plants can be grown from plant species such as turf species that have been held in advance, and can be relocated. The seeds of the plant held in advance and the sprouts from the plant do not easily move or flow out due to wind and rain, irrigation, fluctuations in the ground, and the like, which facilitates plant growth management. 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 it can be relocated, it has good installation stability at the installation target site, and it can be installed on a sloping surface such as an embankment or a hill in addition to sports facilities. 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 produce long products.

The present invention can also provide a natural grass sheet structure having the following advantages. Cut as it is, or cut it to an appropriate size if necessary, such as gardens of general households, parks, river levees, golf courses, soils such as hills where rainwater easily flows, and windy and unstable sandy beaches, Can be easily and easily installed in sand dunes, various buildings, planting zones on roads, etc.
It can also be relocated. Turf may move due to wind and rain, irrigation, fluctuations in the ground, etc.
It is hard to leak and the grass is easy 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 abrasion or withering, the unsightly appearance can be reduced as compared with the conventional natural grass sheet structure. Even if it can be relocated, it has good installation stability at the installation target site, and it can be installed on a sloping surface such as an embankment or a hill in addition to sports facilities. Even if weed seeds are present, they can be laid so as to press them down to prevent weeds from growing, and that is why grass management is easy. 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 By adjoining adjacent members by means of a connecting means such as thread, sewing with a sewing machine, surface fasteners, etc., the installation stability as a whole can be obtained in this respect as well. In the case where the cover web layer has water retention property, when a plurality of those having an appropriate size are placed side by side with adjacent ones, particularly cover water web layers having water retention property being in contact with each other, they are locally applied to the whole. Even when water or water containing plant-growing nutrients is supplied, the cover web layer serves as a water flow path, and it is easy to uniformly supply water and nutrients. 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 core material layer, one or more of protection of the core material layer, adjustment of cushioning property of the structure, adjustment of structure weight, etc. are achieved as necessary. It becomes possible. Further, when the backing material is provided so that water can pass between the cover web layer and the outside thereof, the plant absorbs moisture or the like in the soil in which the structure is installed, or releases excess moisture in the structure to the soil or the like. 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 protrusions is woven from a cover web layer to a core material layer, and when the fibrous material forms a plant protection protrusion in the cover web layer, the fibrous material is covered with a cover web layer. And the core material layer, or the cover web layer, the plant species holding layer, and the core material layer can be integrally connected, and the entire structure can be simplified accordingly. In this case, at least a part of the fibrous material woven into the core material layer can be prevented by a backing material provided below the core material layer. In that case, the structure The whole becomes more difficult to disassemble.

When the fibrous material for forming plant protection protrusions has a water-transporting property, the management of growing and post-growing of the plant becomes easier. When the pile yarn is adopted as the fibrous material for forming the plant protection protrusion, and the plant protection protrusion is in the form of a pile protrusion or a pile protrusion formed from the pile yarn, the plant protection protrusion is formed on the cover web layer surface. It can be easily installed.

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. Moreover, the installation stability of the structure is improved by the engagement or biting action of the net body core material layer with respect to the structure-installed soil or the like. Further, when the cover web layer is a web layer made of cotton including water absorbent cotton made of water absorbent fibers, the water retention amount of the cover web layer and therefore the weight can be easily adjusted in 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 cross-sectional view of an example of a plant growing sheet structure of a type in which a plant species is sown later according to the present invention.

FIG. 2 is a schematic cross-sectional view of an example of a plant growing sheet structure of the type in which plant species are held in advance according to the present invention.

FIG. 3 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 plant growing sheet structure C natural grass sheet structure 1 core material layer 2 cover web layer 3 plant protection protrusions on the surface of cover web layer 4 plant seed holding layer 41 non-woven sheet 42 seed pressing film S grass seed 5 Pile thread 51 Loop pile 6 Backing material 7 Turf 71 Turf root

Claims (15)

[Claims] 1. A core material layer and a cover web layer are superposed in this order from the bottom to the top and integrally connected, and the core material layer has a large number of voids for imparting water permeability and air permeability, and shape retention. A plant-growing sheet structure for growing plants such as grass, characterized in that the cover web layer is provided with a large number of flexible plant protection protrusions on its surface. 2. The plant-growing sheet structure according to claim 1, further comprising a plant-species retaining layer for retaining a plant species and germinating it. 3. The plant growing sheet structure according to claim 1, wherein a backing material is provided below the core material layer so that water can pass between the core material layer and the outside thereof. 4. The plant growing sheet structure according to claim 3, wherein a part or all of the backing material is made of a water-soluble material containing fertilizer. 5. The plant growing sheet structure according to claim 3, wherein the weight of the plant growing sheet structure is adjusted by the backing material. 6. The plant growing sheet structure according to claim 3, 4 or 5, wherein the cushioning property of the plant growing sheet structure is adjusted by the backing material. 7. The plant protection protrusions are formed on the surface of the cover web layer by at least the cover web layer being woven with a fibrous material for forming the plant protection protrusions. A plant-growing sheet structure according to any one of 1. 8. The plant growing sheet structure according to claim 7, wherein the fibrous material for forming the plant protection protrusions is woven from the cover web layer to the core material layer. 9. The plant protection protrusion forming fibrous material is woven from the cover web layer to the core material layer, and the plant protection protrusion is formed on the cover web layer surface by the fibrous material, The plant growing sheet structure according to any one of claims 3 to 6, wherein at least a part of the fibrous material woven into the core material layer is retained by the backing material. 10. The plant growing sheet structure according to claim 7, 8 or 9, wherein the fibrous material has a water-transporting property. 11. The plant growing sheet structure according to claim 7, wherein the fibrous material is a pile yarn, and the plant protection protrusions are pile protrusions or pile-like protrusions. 12. The core material layer is a net body core material layer.
11. The plant growing sheet structure according to any one of 1 to 11. 13. The plant growing sheet structure according to claim 1, wherein the cover web layer is cotton containing water absorbent cotton made of water absorbent fibers. 14. The plant growing sheet structure according to claim 1, which is flexible enough to be wound into a roll. 15. A natural grass sheet structure obtained by growing grass with the plant growing sheet structure according to claim 1.