JP2004033228A - Vegetable cultivation mat and support - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vegetable cultivation mat having excellent water retainability, water absorbency, excess water-draining property and air permeability for roots and mainly applicable to greening of artificial grounds made of concrete, asphalt or the like, gardens, parks, athletic fields such as a golf course, a soccer stadium and a tennis court. <P>SOLUTION: The fibrous cubic assembly obtained by dispersing binder fibers 24 and fertilizer particles 26 in fibers 22 containing polyester synthetic fibers is heated to melt the binder fibers 24, pressed and cooled to solidify the binder fibers 24 so as to bind the fibers each other, to form many cavities among the fibers and to form a fiber mat 20. Many through holes 34 are uniformly formed on the upper surface of a support body 30. Props 36 are formed below intersection points of support parts 32. Each space between the lower ends of the props 36 and the support parts 32, except each prop 36, forms space forming areas 38. The fiber mat 20 is set on and connected to the upper surface of the support body 30 with an adhesive to make a plant grown on the fiber mat 20 stretch roots into the space forming areas 38 through the through holes 34. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a plant cultivation mat mainly used for greening the surface of an artificial ground such as concrete or asphalt, a garden, a park, a golf course, a soccer field, a tennis court or the like.

The inventor has developed a plant cultivation mat for cultivating plants such as turf on a concrete surface constructed on a rooftop or a garden (Japanese Patent Application Laid-Open No. 11-75531 [Patent Document 1]). As shown in FIG. 6, the plant cultivation mat described in this publication has a cultivation bed 9 laminated below a plant-permeable three-dimensional growth layer 8, and a water reservoir layer 10 provided below the cultivation bed 9. I have.

The three-dimensional plant growth layer 8 is a nonwoven fabric of thick and hard fibers. This non-woven fabric is deformed into a shape that curls a transparent fiber made of plastic such as polyester, nylon, polypropylene, polychlorinated chloride, polyethylene, etc., having a thickness of 0.5 to 3 mm, and this is three-dimensionally non-directional. What is collected and heat-compressed, for example, "Philtron" manufactured by Toa Boshoku.

The cultivation floor 9 is made of a synthetic resin foam 9A obtained by hot-pressing and bonding countless foamed synthetic resins formed into a short cylindrical shape into a plate shape, and a plastic foam or a non-woven fabric fitted into a through portion of the synthetic resin foam 9A. Water absorbing material 9B.

The water reservoir layer 10 is formed by shaping a plastic sheet 11 having no water permeability into a shape provided with a water reservoir 12 opening upward. Water is stored in the water reservoir 12, and water is supplied to the cultivation floor 9 and the plant-permeable three-dimensional growth layer 8.
JP-A-11-75531

植物 With the plant cultivation mat having the above structure, a turf mat 13 can be placed on the cultivation mat to grow turf. However, since the plant cultivation mat having this structure uses a unique structure for the cultivation floor, the production cost is extremely high. Furthermore, in order to realize sufficient water retention, the cultivation floor of this structure requires a complicated manufacturing process, such as providing a penetrating portion and fixing a water absorbing material such as a nonwoven fabric, and the manufacturing cost is further increased. Become. In addition, since the cultivation floor does not have sufficient water retention, it is necessary to provide a water reservoir layer on the lower surface thereof, and there is a disadvantage that the number of layers is increased as a whole and the construction cost is increased.

無機 In addition, inorganic fibers such as rock wool and glass fiber are used as a cultivation floor for hydroponics. Since the inorganic fibers themselves are durable, they can be used for several years. However, if they are used for several years, the inorganic fibers are clogged and the performance as a cultivation floor is reduced. Therefore, after several years of use, it is necessary to discard the cultivation floor and replace it with a new one. Rock wool and glass fiber cannot be incinerated, so they are dumped in fields and discarded. However, when these are discarded in the fields, they become fine fibers and scatter brilliantly, causing pollution. For this reason, the method of discarding the cultivation floor in the field is in the forbidden direction.

The present invention has been made in view of the above-described problems in the prior art, and has as its object to have excellent water retention and water absorption, as well as drainage of excess water and roots. An object of the present invention is to provide a plant cultivation mat which is excellent in air permeability and can grow a plant in a comfortable environment, and a support which can easily form the plant cultivation mat.

The plant cultivation mat of the present invention that achieves the above object,
A plant cultivation mat in which a fiber mat portion is laminated and bonded on a support portion forming an upper surface portion of the slender shape portion in a support having a slender shape portion,
In the fiber mat portion, fibers including synthetic fibers are three-dimensionally aggregated, pressed at a predetermined pressure to form an infinite number of voids between the fibers, and intersections of the fibers are bonded with a binder. Yes,
The scalloped portion of the support has a through hole of an upper opening through which the roots of the plants grown in the fiber mat portion can be inserted over substantially the entire upper surface of the support portion, and a space forming portion below the support portion. Has,
The space forming portion is configured such that, in a state where the support is placed on a mounting surface, the roots of the plants extending below the support portion can be stretched through the through-holes, and the support is formed through the adjacent through-holes. The roots of the plants that extend below the part can be interlaced by stretching to the side, and open to the outside of the support so that air and water can flow between them and the outside of the support. The through hole communicates with a side outside of the support through a space forming portion.

(4) In this plant cultivation mat, a support is placed on a placement surface, and plants are grown in a fiber mat portion laminated and bonded on the support portion. The mounting surface is generally a flat surface, but may be an inclined surface. For the growth of plants, for example, seedlings such as turf seedlings can be grown on fiber mats, or plant seeds can be sown or embedded in plant cultivation mats and germinated to grow. When seeds are sown directly on the fiber mat portion, it is preferable to germinate the seeds by placing soil, paper, and the like on the seeds and then watering the seeds.

The fiber mat portion is formed by combining fibers including synthetic fibers in a three-dimensional manner, pressing the fibers under a predetermined pressure to form an infinite number of voids between the waste fibers, and bonding the intersections of the waste fibers with a binder. Therefore, it is possible to realize excellent water retention and water absorption by providing countless voids inside, so that plants can be grown in a comfortable environment.

The fiber mat portion is laminated and bonded on the support portion of the saw-shaped portion of the support, and extends through almost the entire upper surface portion of the support portion, through the upper opening through which the roots of the plants grown in the fiber mat portion can be inserted. Have. A space forming part is provided below the supporting part, and the space forming part is a state in which the root of the plant that extends below the supporting part through the through hole extends in a state where the support is placed on the mounting surface. The roots of the plants extending below the support through the adjacent through-holes can cross each other by stretching laterally. Therefore, it is possible for the roots of the plants that have started to grow in the fiber mat portion to extend vertically and horizontally in the space forming portion below the support portion through the through-hole, and as the plant grows, the fiber mat portion and the support Gradually strengthens the connection with the body.

In addition, excess water in the fiber mat portion flows down to the space forming portion through the through hole of the upper opening that covers almost the entire upper surface portion of the support portion of the support, and the space forming portion places the support on the mounting surface. In the placed state, it opens to the outside of the side of the support so that air and water can flow between the side of the support and the outside of the support. It communicates with the outside of the side. Therefore, the water can be drained to the outside of the side of the support, and the space forming part maintains the ventilation, so that the roots stretched vertically and horizontally in the space forming part are prevented from root rot and the plant An environment suitable for the growth of A. can be obtained.

{(1)} The main material constituting the fiber mat portion is a fiber containing a synthetic fiber. A mixture of synthetic fibers and natural fibers may be used, or only synthetic fibers may be used. As the synthetic fiber, a polyester synthetic fiber, for example, Tetron (registered trademark) is suitable. Polyester synthetic fibers are tough and durable and have excellent chemical resistance, so that they can be used stably for a long period of time. Therefore, it is preferable to include 50% by weight or more of the polyester synthetic fiber. It is more preferably at least 70% by weight, and most preferably at least 80% by weight. However, other types of synthetic fibers such as polyamide synthetic fibers and polyacrylic synthetic fibers may be used.

繊 維 It is desirable that the fibers constituting the fiber mat portion be waste fibers separated from waste waste of a woven fabric braided with fibers including synthetic fibers. It is possible to effectively reuse and manufacture woven fabric waste generated in a large amount in a sewing factory or the like, and to reduce raw material costs. As such a waste fiber, a fiber obtained by opening the waste of the woven fabric and processing it into a fibrous form can be used. Spreading can be performed, for example, by scraping the waste of the woven fabric with a needle from the surface and processing it into a fibrous form, but is not limited thereto. Methods for processing waste into waste fibers can utilize all methods currently in use or to be developed.

In the fiber mat portion of the present invention, such fibers are aggregated three-dimensionally (that is, aggregated without direction so that the directions of the fibers are not aligned), and a binder (bonding the fibers together) is included in the aggregated fibers. Are arranged in an appropriately dispersed state, and pressed at a predetermined pressure in a certain direction to form an infinite number of voids between the fibers, and the intersections of the fibers are bonded with a binder. Can be. In addition, as such a fiber mat portion, it is also possible to use a fiber mat obtained by entanglement of fibers collected three-dimensionally as described above with a needle punch.

繊 維 As the binder, it is preferable to use a fiber having a lower melting point than a fiber as a main material constituting the fiber mat portion. As such a fiber, it is preferable to use a low melting point synthetic fiber such as a low melting point polyester fiber, but it is not limited to this.

用 い る When low-melting fibers are used as binder fibers, for example, a fiber mat portion can be obtained as follows.

(4) That is, a binder fiber for bonding the fibers is mixed with the fiber as a main material constituting the fiber mat portion. It is desirable that the binder fibers be dispersed as uniformly as possible in other fibers. The addition amount of the binder fiber can be, for example, 5 to 30% by weight of the whole. If the amount of the binder fiber is small, the fibers may not be sufficiently bonded. If the amount of the binder fiber is too large, the porosity between the fibers may decrease.

After the fibers to which the binder fibers are added and dispersed are three-dimensionally aggregated to a predetermined thickness without any direction, the fibers are heated to a temperature at which only the binder fibers are melted and pressurized, and the intersection of the fibers other than the binder fibers is heated. Bond with the melted binder fibers. The ratio of pressing the fibers collected to a predetermined thickness to reduce the thickness is set to an optimum value depending on the application. For example, the ratio is 10 to 50%, preferably about 25% to the thickness of the collected state. I do.

す る と Pressing the aggregate of fibers thinly reduces the space between the fibers, improving water retention and reducing drainage. If the aggregate of the same amount of fibers is pressed thickly, drainage is improved but water retention is reduced. Therefore, it is desirable that the degree of pressing the aggregate of fibers be an optimum value for the plant to be cultivated in consideration of water retention and drainage.

The thickness of the fiber mat portion can be 1 to 5 cm when, for example, a lawn seedling is put on a concrete surface for growth, or when a seed such as a flower is sown on the concrete surface to grow it. Preferably it is 1.5 to 3 cm.

The plant cultivation mat used for the hydroponic cultivation floor has a preferred thickness of 5 to 50 cm, preferably 10 to 30 cm, and is pressed to assemble fibers added with binder fibers so as to have this thickness. I do.

The binder fiber is mixed with the fiber as the main material constituting the fiber mat portion, and the three-dimensionally aggregated fibers (without directionality so that the directions of the fibers are not aligned) are pressed in a heated state to melt the binder fibers. By combining the fibers with each other, the fibers are compressed to a predetermined thickness and bonded without reducing the voids between the fibers (that is, without lowering the water retention and drainage), and the fiber mat portion is formed. Obtainable. In order to press the aggregate of fibers in a heated state and melt the binder fibers to bond the fibers together, for example, the aggregate of fibers is heated to a temperature at which the binder fibers melt, and then pressed, and the binder fibers are cooled. -A method of curing and bonding the fibers can be adopted. According to this method, the fiber mat portion can be manufactured efficiently by pressing the aggregate of the fibers with a cold press. Further, it is also possible to adopt a hot pressing method in which the aggregate of fibers is pressurized while being heated by a hot plate, and the fibers are bonded by melting the binder fibers.

As another example of the binder, a liquid or paste-like binder in an uncured state can be cited. In this case, for example, when assembling the fibers constituting the fiber mat portion, a liquid or paste-like binder is sprayed on the fibers, and then the fibers are cured by pressing the aggregate of fibers to cure the binder. By bonding, a fiber mat portion can be obtained.

繊 維 Furthermore, the fiber mat portion may be formed by adding fertilizer particles to the voids of the fibers. According to this fiber mat portion, fertilizer is supplied from fertilizer grains when growing a plant. In this case, it is desirable that the fertilizer granules have a size that does not move from the gap between the fibers. In this fiber mat portion, in a state in which fertilizer particles are dispersed in an aggregate of fibers, press it at a predetermined pressure, and bond the intersections of the fibers with a binder in a state where countless voids are formed between the fibers. Can be obtained by

種子 Also, seeds can be buried in advance in the fiber mat section. In this case, the trouble of sowing the seed can be omitted, and the seed can be easily germinated by watering. The seeds may be buried before or after pressing the aggregate of fibers and bonding the fibers with the binder. Further, if the fertilizer granules are added to the voids of the fibers as described above, the labor for applying the fertilizer can be omitted.

(2) す The saw-shaped portion of the support, the through-hole of the upper opening through which the roots of the plants grown in the fiber mat portion laminated and bonded on the support portion forming the upper surface portion of the saw-shaped portion can be inserted. It has over substantially the entire upper surface of the support.

ほ か The support may be entirely in the shape of a saw blade, or may have a portion that is not a saw blade.

The top surface of the pen-shaped portion may have a substantially constant height except for the through hole, and may have, for example, both or one of a convex portion and a concave portion.

(4) The through hole in the upper opening allows the root of a plant grown in the fiber mat portion laminated and bonded on the support portion to pass therethrough. It is preferable that the tapered portion has a large number of through holes of the upper opening uniformly on the upper surface portion. In plan view, the ratio of the total area of the through holes to the area of the upper surface of the scoop-shaped portion can be, for example, 35 to 95%, preferably 70 to 95%, and more preferably 80 to 95%. . It is desirable that the through holes are evenly and evenly formed on the upper surface.

す The saw-shaped portion of the support has a space forming portion below the support portion that forms the upper surface of the saw-shaped portion.

The space forming portion, in a state where the support is placed on the mounting surface, (i) plant roots extending below the support portion through the through hole can be stretched, (ii) adjacent through holes The roots of the plants that extend below the support part through each can intersect by stretching laterally, and (iii) support so that air and water can flow between the lateral sides of the support. (Iv) The through-hole is open to the side outside of the body, and the through hole communicates with the side outside of the support through the space forming portion.

高 The height of the space forming portion can be, for example, 5 to 100 mm, but is preferably 10 to 60 mm, and more preferably 15 to 40 mm. The porosity of the lower part of the support part forming the upper surface part of the tapered part can be, for example, 50 to 95%, but is preferably 70 to 95%, and more preferably 80. To 95%.

The space forming portion is preferably opened downward, including a portion opened to the side outside of the support so that air and water can flow between the space and the outside of the support. In this case, the drainage from the space forming portion to the side outside is excellent.

The space forming part intersects when the support is placed on the mounting surface, and the roots of the plants extending below the support through the respective adjacent through holes are stretched sideways. It is desirable to obtain it. It is desirable for the growth of the plant that the roots of the plant extending below the support portion through the through hole extend in multiple directions in the space forming portion and can be stretched as freely as possible, and the connection between the fiber mat portion and the support is also strengthened. Is done.

A plurality of the plant cultivation mats of the present invention can be arranged adjacent to each other on the mounting surface. At this time, the adjacent plants are opened through the openings to the lateral outside of the space forming portions in the support of each plant cultivation mat. It is desirable that the root can be formed in the space forming part of the cultivation mat.

As a specific example of the support, a plurality of support portions that support the support portion in the pan-shaped portion in a state where the support is mounted on the mounting surface are dispersedly arranged, and the lower end position of each support portion and the support portion In the space between the two, a portion excluding each pillar portion is a space forming portion. In this support, the space forming portion may be open to the outside of the side of the support at a portion other than each of the pillar portions. In this case, the drainage and air permeability of the space forming portion are more excellent.

It is desirable that the saw-shaped portion has rigidity and strength capable of supporting at least an adult on the support portion without causing substantial bending or breakage. The term "substantially bending" refers to a degree of bending that damages a root extending to a space forming portion through a through hole provided in the supporting portion when at least the adult is supported on the supporting portion. In this case, walking on the plant cultivation mat does not hinder the growth of the plant because the roots stretched to the space forming portion through the through holes are not damaged, and the walking property when walking on the plant cultivation mat is also improved. good.

植物 The plant cultivation mat can also move in a state where the plant has grown in the fiber mat portion or in a state where the plant has grown in the fiber mat portion and the roots of the plant are stretched through the through holes into the space forming portion. If the rigidity of the support is sufficiently high, the plant cultivation mat can be easily moved.

支持 The support in the plant cultivation mat may be provided with a connecting portion on an outer peripheral portion thereof, which can connect the supports to each other adjacently. In the case where the support has the connecting portion as described above, by positioning the supports adjacent to each other, the positioning of each plant cultivation mat on the mounting surface becomes easy.

Further, a plurality of struts supporting the supporting portion in the pan-shaped portion are arranged in a distributed manner in a state where the support is placed on the placing surface, and a space between the lower end position of each strut and the supporting portion is formed. In a case where the portion excluding each pillar portion is a space forming portion, and the support has such a connecting portion, the space forming portion is formed at a portion outside the supporting portion and / or the side portion of the support body except for the connecting portion. Can be opened at In this case, the drainage and air permeability of the space forming portion are more excellent.

In addition, as an example including such a connecting portion, when the support body has a square shape, fitting protrusions are respectively provided on two adjacent sides, and fitting protrusions are respectively provided on the remaining two adjacent sides. One having a fitting annular portion that can be fitted can be given.

繊 維 A fiber mat portion is laminated on the support portion forming the upper surface portion of the scoop-shaped portion of the support.

As means for laminating and bonding the fiber mat portion on the support portion, in addition to the means described below, lamination and bonding using a hot melt adhesive, and lamination and bonding using a thread, string, or other tightening device In any case, the root of the plant grown in the fiber mat portion extends downward through the through hole of the upper opening in the support portion, and means that does not prevent the root from growing in the space forming portion. I need to be there.

Examples of the plant cultivation mat laminated and bonded by such means include, for example, a plant cultivation mat formed by laminating and bonding a fiber mat portion on a support portion of a saw-shaped portion with a water-soluble adhesive substance. it can. Before being placed on the placement surface and starting to be used, the fiber mat portion is laminated and bonded to the support portion forming the upper surface portion of the tape-like portion with a water-soluble adhesive substance. When the plant is started to grow and water is supplied to the fiber mat, such as by watering, the water-soluble adhesive substance dissolves and the adhesive force is eventually dissolved, but the roots of the grown plant extend downward through the through holes. By stretching in the space forming portion, the fiber mat portion and the support portion are joined.

Further, as another example of a plant cultivation mat laminated and connected by the above-described means, a saw-shaped portion includes a large number of small hook portions on an upper surface portion, and a fiber mat portion of the small hook portion. Plant cultivation mats that are entangled and joined at the bottom can be mentioned. In this case, it is possible to easily form a plant cultivation mat by laminating and bonding the fiber mat portion to the upper surface of the saw-shaped portion.

In this case, the support is a support having a saw-shaped portion, and covers almost the entire upper surface portion of the support portion forming the upper portion of the saw-shaped portion, and a through-hole of an upper opening through which plant roots can be inserted. Having a space forming part below the support part,
The space forming portion is configured such that, in a state where the support is placed on the mounting surface, the roots of the plants extending below the support portion can be stretched through the through-holes, and the support is provided through the adjacent through-holes. The roots of the plants that extend below the part can be interlaced by stretching to the side, and open to the outside of the support so that air and water can flow between them and the outside of the support. The through hole communicates with a side outside of the support via a space forming portion,
A plurality of small hook portions which can be entangled with and bond with felt-like fibers are provided on the upper surface of the saw-shaped portion.

Since this support is provided with a large number of small hooks on the upper surface of the saw-shaped portion, which can be entangled with the felt-like fibers and bonded, the fiber mats can be easily laminated and connected on the support by the small hooks. Thus, the plant cultivation mat of the present invention can be easily formed.

It is desirable that any of the above-mentioned supports can be integrally molded by injection molding or the like using a molding material such as a synthetic resin.

The plant cultivation mat of the present invention, the fiber mat portion laminated and bonded on the support portion of the scoop-shaped portion of the support, has an infinite number of voids inside to achieve excellent water retention and water absorption, the fiber It is possible for the roots of the plants that have started to grow on the mat portion to extend vertically and horizontally in the space forming portion below the support portion through the through hole. Excess water in the fiber mat part can be drained to the outside of the side of the support, and since the space forming part maintains air permeability, roots stretched vertically and horizontally in the space forming part are prevented from root rot. To provide an environment suitable for plant growth. Further, as the growth of the plant progresses, the bond between the fiber mat portion and the support is gradually strengthened.

In addition, since the support of the present invention is provided with a large number of small hooks that can be entangled with and bond with felt-shaped fibers on the upper surface of the saw-shaped part, the fiber mat can be easily formed on the support by the small hooks. The plant cultivation mat of the present invention can be easily formed by stacking and bonding.

An embodiment of the present invention will be described with reference to FIGS.

FIGS. 1 to 4 relate to a plant cultivation mat as an example of an embodiment of the present invention, and FIG. Then, a plant cultivation mat M formed by laminating and bonding the fiber mat portions 20 using an adhesive is placed on a concrete mounting surface C, and a lawn seedling G is placed on the fiber mat portion 20. It is sectional drawing. 2 is a plan view of the support 30, FIG. 3 is an enlarged front view of a main part of the support 30, and FIG. 4 is an enlarged cross-sectional view of a main part taken along line IV-IV in FIG.

The fiber mat portion 20 is mainly made of a material obtained by opening waste fibers of a woven fabric braided with fibers 22 containing about 80% of a polyester-based synthetic fiber and processing the waste into a fibrous form. It is produced by mixing and dispersing low-melting polyester fibers of weight% as binder fibers 24 and further dispersing fertilizer particles 26 in an aggregate of fibers. That is, a state in which the fertilizer grains 26 are dispersed in an aggregate of fibers in which these fibers are three-dimensionally aggregated to a predetermined thickness in a non-directional manner is heated to a temperature at which the binder fibers 24 melt, and then the aggregated state is obtained. Is pressed to a thickness of about 25% with respect to the thickness of the fertilizer, and the binder fibers 24 are cooled and hardened to bond the fibers together to form countless voids between the fibers. The fiber mat portion 20 to which 26 was added was obtained.

The support 30 is integrally formed by injection molding of a synthetic resin. The support 30 is formed as a whole, and has a grid-like shape connecting diagonal lines of each of the grids. Make a shape. The through-holes 34 of the upper opening formed uniformly over the entire upper surface of the support portion 32 allow the roots of the plants grown in the fiber mat portion 20 laminated and connected on the support portion 32 to pass therethrough. Also has a substantially right-angled isosceles triangle shape in plan view. The upper surface of the support portion 32 has a substantially constant height except for the through hole 34. A column 36 is formed below the intersection of the grids in the support 32. The support portions 36 support the support portions 32 in a state where the support 30 is mounted on the mounting surface, and are provided between the lower end positions (mounting surface positions) of the support portions 36 and the support portions 32. A portion of the space except for the support portions 36 is a space forming portion 38.

As the growth of the turf seedling placed on the fiber mat portion 20 progresses, its roots are stretched to the fiber mat portion 20 and further extend below the support portions 32 through the through holes 34 so that the roots are also formed in the space forming portions 38. I will stretch. The roots extending below the support portion 32 through the respective adjacent through holes 34 can be interlaced by being stretched laterally in the space forming portion 38. Each of the through holes 34 communicates with the outside of the support 30 via the space forming portion 38. Since the roots extending below the support portions 32 through the through holes 34 extend in multiple directions in the space forming portion 38 and can be stretched as freely as possible, it is desirable for the growth of turf. Bonding is also strengthened.

The space forming portion 38 is opened downward, and is open to the outside of the side of the support 30 except for the column portion 36. Therefore, air and water can flow between the side of the support 30 and the outside, and the drainage from the space forming portion 38 to the side outside is excellent. In addition, when a plurality of the plant cultivation mats M are arranged adjacent to each other on the mounting surface, the adjacent plant cultivation mats M are opened via the openings to the lateral outside of the space forming portion 38 in the support 30 of each plant cultivation mat M. It is possible for the space forming part 38 to take root.

The support 30 has rigidity and strength capable of supporting at least an adult on the support portion 32 without causing substantial bending or breakage. Accordingly, walking on the plant cultivation mat M does not hinder the growth of plants such as turf and the like, and does not hinder the roots of the space forming portion 38 through the through holes 34 by walking on the plant cultivation mat M. Good walking ability.

In this example, an adhesive is applied to the upper surface (lattice-like portion) of the support 30 to laminate and bond the fiber mat portion 20. However, the fiber mat portion 20 is dissolved on the lower surface of the fiber mat portion 20 by watering after use. The fiber mat portion 20 can be laminated and bonded to the upper surface of the support 30 by applying a water-soluble adhesive material. Further, as shown in FIG. 5 which is an enlarged plan view of a main part of another example of the support 30, the support 30 having a large number of small hook portions 40 on the upper surface is obtained by integral molding of a synthetic resin. The fiber mat portion 20 can be easily laminated and joined by being entangled with the lower portion of the fiber mat portion 20 at the small hook portion 40.

Further, as shown by a two-dot chain line in FIG. 2, fitting protrusions 42 are provided on two adjacent sides of the support 30, and the fitting protrusions 42 can be fitted on the remaining two adjacent sides, respectively. By providing the combined annular portion 44, it is possible to connect the supports 30 adjacent to each other, so that the positioning of each plant cultivation mat M on the mounting surface can be facilitated.

The vertical positional relationship in the description of the above embodiment is merely for convenience of description based on the drawings, and does not limit an actual use state or the like. The scope of the present invention is limited to the dimensions, the number, the materials, the shapes, the relative arrangements, and the like of the components in the description of the above embodiments unless otherwise specified. It is not intended to be a mere explanation, but merely a description example.

FIG. 4 is a cross-sectional view of a state in which a plant cultivation mat formed by lamination and bonding on a top surface of a support is placed on a placement surface, and a lawn seedling is placed on a fiber mat to grow. It is a top view of a support. It is a principal part enlarged front view of a support body. FIG. 4 is an enlarged cross-sectional view of a main part taken along line IV-IV in FIG. 2. It is a principal part enlarged plan view about another example of a support. It is sectional drawing of the plant cultivation mat which the inventor developed earlier.

Explanation of reference numerals

M Plant cultivation mat C Placement surface G Turf seedling 20 Fiber mat part 22 Fiber 24 Binder fiber 26 Fertilizer grain 30 Support body 32 Support part 34 Through-hole 36 Support column part 38 Space forming part 40 Small hook part 42 Fitting protrusion part 44 Fitting Joint ring

Claims (11)

A plant cultivation mat in which a fiber mat portion is laminated and bonded on a support portion forming an upper surface portion of the slender shape portion in a support having a slender shape portion,
In the fiber mat portion, fibers including synthetic fibers are three-dimensionally aggregated, pressed at a predetermined pressure to form an infinite number of voids between the fibers, and intersections of the fibers are bonded with a binder. Yes,
The scalloped portion of the support has a through hole of an upper opening through which the roots of the plants grown in the fiber mat portion can be inserted over substantially the entire upper surface of the support portion, and a space forming portion below the support portion. Has,
The space forming portion is configured such that, in a state where the support is placed on a mounting surface, the roots of the plants extending below the support portion can be stretched through the through-holes, and the support is formed through the adjacent through-holes. The roots of the plants that extend below the part can be interlaced by stretching to the side, and open to the outside of the support so that air and water can flow between them and the outside of the support. The plant cultivation mat, wherein the through-hole communicates with a lateral outside of the support through a space forming portion. In the fiber mat portion, low-melting polyester synthetic fibers are mixed as a binder with the fibers, and the three-dimensionally assembled fibers are pressed in a heated state, and the fibers are bonded together by melting the low-melting polyester synthetic fibers. The plant cultivation mat according to claim 1, wherein the mat is prepared. (3) The plant cultivation mat according to (1) or (2), wherein fertilizer grains are added to voids of fibers in the fiber mat portion. 4. The plant cultivation mat according to claim 1, wherein the fibers constituting the fiber mat portion are waste fibers separated from waste waste of a woven fabric braided with fibers including synthetic fibers. (5) The plant cultivation mat according to any one of (1) to (4), wherein the glass-shaped portion has a large number of through holes having upper openings uniformly on the upper surface. The space forming portion is configured such that, in a state where the support is placed on a mounting surface, the roots of the plants extending below the support portion through arbitrary adjacent through holes are stretched side by side to cross each other. The plant cultivation mat according to any one of claims 1 to 5, which is capable of binding each other. In the state where the support is mounted on the mounting surface, a plurality of support portions for supporting the support portion in the pan-shaped portion are dispersedly arranged, and a space between the lower end position of each support portion and the support portion is provided. The plant cultivation mat according to any one of claims 1 to 6, wherein a portion excluding each support portion is a space forming portion. (8) The plant cultivation mat according to (7), wherein the space forming portion opens to the side outside of the support at a portion other than the support portion. (8) The plant cultivation mat according to any one of (1) to (7), further comprising a connecting portion on an outer peripheral portion of the support so as to connect the supports to each other. The outer peripheral portion of the support is provided with a connecting portion capable of connecting the supports to each other adjacently, and in a state where the support is placed on a mounting surface, the space forming portion is provided with the support portion and / or 8. The plant cultivation mat according to claim 7, wherein the portion excluding the connecting portion is opened to the side outside of the support. 9. (11) The plant cultivation mat according to any one of (1) to (10), wherein the glass-like portion has rigidity and strength capable of supporting at least an adult on the support portion without causing substantial bending or destruction.

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