JP5458939B2 - Seed storage medium - Google Patents

Description

  [Technical Field] The present invention is a technique related to a medium in which general seeds such as plants are stored.

Conventionally, in order to save the trouble of manually spreading seeds in the soil during farming, or to distribute seeds such as plants to a large number of people as a gift for an event, etc. It has been practiced to place seeds such as plants in a recess provided in the material and cover the surface with a thin cover film or the like that can be broken by the germination force of the seeds.
Patent literature discloses, for example, a seed storage sheet in which a recess is provided in a cloth material such as paper, cloth, and wood block that easily corrode in the soil, seeds are stored, and the recess is sealed with a coating layer or a cover film. (Patent Document 1).
Further, a message transmission medium is disclosed in which plant seeds and plant growth promoting substances are arranged on the surface of a biodegradable material such as paper and a cover film is placed on the surface (Patent Document 2).

JP 2000-106714 A JP-A-11-277952

However, because it breaks the cover film that is covered only by the ability of the plant to germinate, it cannot obtain a stable germination rate, and depending on the strength and type of the cover film, it absorbs moisture when buried in the soil. As a result, swelling and elongation strength were improved, and there were problems such as preventing the germination and growth of plants without decreasing the strength.
In addition, hydration as one of the seed germination conditions is affected by the environment of the medium, and there is a problem that a stable germination rate cannot be obtained.

  The present invention has been made in order to solve the above-mentioned problems, and the object of the present invention is to provide a seed storage medium capable of stable germination and growth regardless of the material of the cover film or the like and the environment of the culture medium. It is to provide.

  In order to solve the above-described problem, the present invention provides a base material provided with a seed storage unit, seeds and polymer absorbers stored in the seed storage unit, and a cover film covering at least the seed storage unit, The seed storage medium is characterized by comprising:

  In the present invention, the seed storage medium is characterized in that the seed storage section is a recess or a hole.

  The present invention also provides the seed storage medium, wherein the seed is adhered to the cover film.

  The present invention provides the seed storage medium, wherein the cover film is water-soluble or biodegradable.

  Further, the present invention provides the seed storage medium, wherein the cover film and the base material are bonded together with a biodegradable adhesive.

  Further, the present invention provides the seed storage medium, wherein the base material is provided with a cutout portion capable of cutting the base material in a shape including at least the seed storage portion.

  Further, according to the present invention, the base material is provided with an information recording portion made of an IC chip or a magnetic recording layer, and the cutout portion includes at least a portion including the seed storage portion and at least one of the information recording portions. The seed storage medium is characterized in that the base material can be divided into a part including the part.

  Since the present invention is configured as described above, the following effects can be obtained.

  That is, the seed storage medium in the present invention stores the seed and the polymer absorbent together in the seed storage section provided on the base material, and the seed storage section is sealed with a cover film. Or, when placed on a hydroponics sponge, the polymer absorber absorbs moisture and the volume increases, so that it is possible to reliably break the cover film and increase the germination rate of seeds. .

It is sectional drawing in one example of embodiment of the seed storage medium in this invention. It is sectional drawing explaining how to provide the contact bonding layer in the seed storage medium in this invention. It is a schematic diagram explaining the usage example of the seed storage medium in this invention.

  Hereinafter, the seed storage medium in the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a cross-sectional view of an embodiment of a seed storage medium according to the present invention. In the seed storage medium 1 according to the present invention, a recess 3 or a hole 4 is provided as a seed storage portion in a base material 2, and seeds 5 and a polymer absorbent body 6 are stored therein, and this is sealed with a cover film 7. Become. FIG. 1A is an example of a seed storage medium when the seed storage part is a recess, and FIG. 1B is an example of a seed storage medium when the seed storage part is a hole. .

  As the substrate, plastic, biodegradable resin, paper or the like can be used, and is not particularly limited. However, biodegradable resin and paper are particularly preferable because they are gradually decomposed when buried in soil. Examples of the biodegradable resin material include biodegradable aliphatic polyesters such as polylactic acid (PLA), polyhydroxyalkanoic acid (PHA), and polybutylene succinate (PBS), and resins. Examples of paper include general paper and vulcanized fiber. Further, the base material may be one that aromas the scent of flowers. For example, the user can be more entertained if the scent of a flower or a fruit attached by a plant that germinates from the stored seed is fragrant.

  The size and shape of the substrate are not particularly limited, but the short side is 53.92 to 54.03 mm, the long side is 85.47 to 85.72 mm, and the thickness is 0.76, as defined in JIS standards. You may use the card | curd base material of +/- 0.08mm. However, the shape of the base material in the present invention is not particularly limited to this, and may be designed in a rectangular shape, a square shape, a trapezoidal shape, a star shape, a heart shape, and other free shapes. Further, the substrate may have a single layer structure or a plurality of layers.

  The seed storage unit is a space for storing seeds and a polymer absorbent. Examples of the structure of the seed storage unit include a recess and a hole. The recess can be formed by counterboring the substrate. In addition, when a base material consists of multiple layers, it is also possible to form a recessed part by overlapping the base material which has a through-hole, and the base material without a through-hole. The hole can be formed by punching the base material. However, even if the seed storage portion has a structure other than the concave portion and the hole portion, the seed storage portion is not particularly limited as long as it can store the seed and the polymer absorbent. Further, the size and shape of the seed storage part may be appropriately set depending on the size and amount of the seed and the polymer absorbent to be stored, and are not particularly limited. A plurality of seed storage units may be formed for one seed storage medium.

  The seeds in the present invention refer to seeds or fragments thereof in all plants such as flowers, grass, vegetables, fruits and trees, or mycelial spores, lichen spore, etc., which are stored in the seed storage section. There is no particular limitation as long as it has a possible size, shape, and properties.

  A polymer absorber is a material that absorbs and retains moisture and expands. Stable water supply to the seeds is possible due to the function of retaining the moisture of the polymer absorbent. Further, due to the function of swelling, it has an effect of supplying moisture to the cover film by contacting the cover film and promoting swelling and softening of the cover film. In addition, by applying pressure to the cover film and pushing it out, it also has an effect of helping to destroy and decompose the cover film that cannot be completely destroyed by the seed germination force alone. The amount of the polymer absorbent to be stored may be appropriately determined according to the size, amount, ratio, seed size, etc. of the seed.

  Specific examples of the material for the polymer absorber include polyacrylic acid polymers, starch polymers, and carboxymethyl cellulose polymers.

The polymer absorbent generally expands to the volume of the absorbed water amount. Moreover, although the amount of moisture absorption varies depending on the material, it is several tens to several hundreds times its own weight. In this experiment, Magic Crystal (manufactured by Matsuno Kogyo Co., Ltd.) was used as a polymer absorber, and when it was buried in the soil, 50 g (about 50 cm ³ ) or more of moisture per gram was absorbed and expanded. Was confirmed.

  The amount of the polymer absorber varies depending on the material and the environment in the soil to be buried, but it is stored in the seed storage part and buried in the soil to absorb moisture, so that it exceeds the thickness of the base material. It is desirable that the amount be expanded. Thereby, it becomes possible to surely help the destruction of the cover film.

  Of course, the cover film needs to be provided on one side of the base material in order to seal the concave part when the seed storage part is a concave part, and when the seed storage part is a hole, It is necessary to provide on both sides.

In addition, the cover film normally needs to have a certain burst strength in order to reliably seal the seed. However, when buried in soil or placed in a sponge for hydroponics, the material needs to be easily broken in order to improve the germination rate of seeds. Therefore, paper, starch, biodegradable resin, etc. that can be decomposed and dissolved by water or microorganisms are included. Although it does not specifically limit as a material of a cover film, Since biodegradable resin and paper are gradually decomposed | disassembled when it embeds in soil from an environmental problem viewpoint, it is preferable. Moreover, although the thickness of a cover film changes also with the materials, it is desirable to set it as several micrometers-200 micrometers.

When paper is used as the material for the cover film, the burst strength (kgf / cm ³ {kPa} (10 sheets)) is 0.8 {78} or more (reference: JIS P8112 paper and paperboard mullen low-pressure tester It is desirable that the burst strength test method is used.

  As the paper having the bursting strength, for example, toilet paper can be used. However, use those that do not have defects in usage such as unevenness, tearing, and holes. The toilet paper has a water absorption of about 20 (mm) (test time: 1 minute, water temperature: 20 ± 5 ° C., reference: JIS P8141 water absorption test method by paper Krem method), absorbs water, Since it has the property of being easily loosened, it is suitable as a cover film.

  In addition, when a biodegradable resin is used as a material for the cover film, it has biodegradability such as polylactic acid (PLA), polyhydroxyalkanoic acid (PHA), polybutylene succinate (PBS), etc. as in the case of the base material. Aliphatic polyesters and resins can be mentioned.

  The shape of the cover film is not particularly limited as long as it has an area sufficient to cover at least the opening of the seed storage portion provided on the base material. For example, when the seed storage portion is a recess, a cover film having an area slightly larger than the area of the opening of the recess may be used as shown in FIG. As shown to a) -2, you may use the cover film which covers the whole surface of a base material.

  When the seed storage part is a hole, as shown in FIG. 1 (b) -1, two cover films having an area slightly larger than the area of the opening of the hole may be used. As shown in FIGS. 1 (b) -2 and (b) -3, either one is a cover film having an area slightly larger than the area of the hole, and the other is a cover film having an area covering the entire surface of the substrate. May be used. Furthermore, as shown in FIG. 1 (b) -4, a cover film having an area following the entire surface of the substrate may be used on both sides. The shape of the cover film in this invention is not limited to the shape mentioned above, and can be designed suitably.

  In order to seal the seed storage part of a base material, it is necessary to provide the adhesive film 8 in the part which overlaps the peripheral part of a seed storage part at least. Since the adhesive layer contains the seeds and the polymer absorber, it is required that the adhesive layer has an adhesive force that does not peel off from the base material at a normal time before being buried in the soil. Examples of the material for the adhesive layer include starch-based, rubber-based, acrylic-based, urethane-based, and silicone-based materials. Although it does not specifically limit as a material of an adhesive agent, From a viewpoint of an environmental problem, especially biodegradable resin and paper are preferable since they decompose gradually when buried in the soil.

  A method of providing the adhesive layer will be described with reference to FIG. FIG. 2 shows only the case where the cover film has an area slightly larger than the area of the opening of the seed storage unit, but this is the case where the cover film is provided on the entire surface of the substrate. Even if it is provided in any other shape, the same applies.

  First, about the case where a seed storage part is a recessed part, Fig.2 (a) showed some embodiment examples. When sealing the seed and the polymer absorbent housed in the recess with a cover film from one side of the base material, for example, as shown in FIG. Cover film can be used. In this case, after accommodating the seed and the polymer absorbent body in the recess, the cover film may be bonded to the base material by aligning the positions.

  Further, as shown in FIG. 2A-2, the adhesive layer may be provided on the entire surface of the cover film. In this case, as shown in the figure, when the cover film is bonded to the base material, seeds and / or polymer absorbers are temporarily fixed to the adhesive layer corresponding to the concave portions in advance, You may make it stick this on a base material. By doing so, it is possible to save the trouble of filling the concave portions with seeds, it is possible to improve the production efficiency, and there is also an effect that seeds and polymer absorbers are not sprayed at the time of bonding. Have. Furthermore, even when the seed interval is fixed and the seed storage medium is installed obliquely, it is possible to prevent the seeds from being biased toward the corners of the seed storage unit.

  Next, some embodiments are shown in FIG. 2B for the case where the seed storage part is a hole. When sealing the seeds and polymer absorbent housed in the hole with cover films from both sides of the substrate, for example, as shown in FIG. 2 (b) -1, both sides correspond to the periphery of the hole A cover film provided with an adhesive layer can be used. In this case, a cover film is first bonded to one side of the base material, one side of the hole is sealed, and seeds and polymer absorbers are stored in the hole, and then a cover film is applied to the other side of the base material. It can be sealed by combining them.

  Further, as shown in FIG. 2B-2, the cover film on one side is provided with an adhesive layer on the part corresponding to the periphery of the hole, and the other cover film is provided with an adhesive layer on the entire surface. You can also leave. Also in this case, as in FIG. 2 (a) -2, seeds and / or polymer absorbers are temporarily fixed in advance in the portions corresponding to the holes of the cover film provided with an adhesive layer on the entire surface. In addition, this may be bonded to the base material.

  Or, after attaching a cover film having an adhesive layer on the entire surface to the base material first, and temporarily fixing the seed or polymer absorber on the adhesive layer from the opposite side of the base material, A cover film may be bonded. By doing so, it is possible to prevent the seeds and polymer absorber from scattering during the manufacturing process. At this time, as shown in FIG. 2 (b) -3, a polymer absorber layer is formed by spreading and temporarily fixing the polymer absorber on the adhesive layer, and seeds are placed on this layer. It may be arranged.

  Furthermore, as shown to FIG.2 (b) -4, the contact bonding layer can also be provided in the whole surface of the cover film of both surfaces. In this case, seeds and / or polymer absorbers may be temporarily fixed in advance to the portions corresponding to the holes of the cover films on both sides, and this may be bonded to the substrate. In addition, the manufacturing process may be arranged as long as seeds are temporarily fixed to one cover film and a polymer absorber is temporarily fixed to the other cover film.

  FIG. 3 shows an example of how the seed storage medium is used in the present invention. As shown in FIG. 3, the seed storage medium in the present invention can be effectively used for a SIM card, a mini IC card, a mini magnetic card, and the like that are used by cutting a specific portion from a card-shaped medium.

  In order to cut out the base material, it is necessary to provide a cut-out portion that can be cut out on the base material. The cut-out portion is obtained by half-cutting from one side or both sides, or partially punching out in a broken line shape or the like.

  FIG. 3A shows an example in which the seed storage medium is used for a SIM card. The SIM card has a contact IC module 10 and has the same shape as a normal contact IC card as a whole. By providing a cut-out portion around the contact-type IC module, it is possible to obtain a SIM card that can be inserted into a mobile phone, a USB adapter of a personal computer, or the like. And a seed storage part is provided in a part other than the part cut out as this SIM card, a seed is stored, and it becomes a seed storage medium.

  FIG. 3B shows an example in which the seed storage medium is used for a mini IC card. The mini IC card shown in the figure includes a non-contact type IC chip 11 and a communication antenna 12 and has the same shape as a normal non-contact type IC card as a whole, but a non-contact type IC chip. Instead of this, a contact type IC module may be provided. By providing a cutout portion around the portion including the IC chip and the antenna, it is possible to obtain mini IC cards having various shapes. In the figure, the mini IC card has a rectangular shape, but is not limited to this. Then, a seed storage unit is provided in a portion other than the portion cut out as the mini IC card, and seeds are stored to become a seed storage medium.

  FIG. 3C shows an example in which the seed storage medium is used for a mini magnetic card. The mini magnetic card has a magnetic recording unit 13 and has the same shape as a normal magnetic card as a whole. A mini-magnetic card can be obtained by providing a cutout portion in a shape including at least a part of the magnetic recording portion so that it has at least an area capable of communicating with an external magnetic reading device. Further, the shape of the mini magnetic card is not limited to the illustrated one. And a seed storage part is provided in a part other than the part cut out as this mini-magnetic card, and seeds are stored to become a seed storage medium.

  In other words, because SIM cards, mini IC cards, mini magnetic cards, etc. use the conventional production line, some of the normal cards are cut out during use and the rest are discarded. It was a problem from the point of view. Conventionally, it is possible to effectively utilize the seed by storing the seed in a portion to be discarded.

  A vulcanized fiber (manufactured by Toyo Fiber Co., Ltd.) having a thickness of 0.75 to 0.81 mm was used as a base material, and a contact type IC module and a cutout part capable of being cut into a SIM card shape were provided on a part of the base material. In addition, a concave portion having a direct line of 5 mm and a depth of 0.7 mm is provided in a portion other than the portion cut by the SIM card, seeds and magic crystal having a particle size of about 0.2 to 0.8 mm (Matsuno Kogyo Co., Ltd.) ) Manufactured) (the amount of the polymer absorbent is about the same as the seed), 0.065 mm thick water-soluble paper 30MDP (Nippon Paper Papillia) with starch paste with both sides of the hole as an adhesive layer The seed storage medium having the shape shown in FIG. 3A was obtained. The storage amount of the polymer absorbent was approximately the same as the seed. Samples 1-1, 1-2, 1-3, and 1-4 were prepared by changing the seeds stored in the seed storage medium to sweet basil, rose gypsophila, forget-me-not, and peppermint.

Samples 1-1 to 1-4 are dried in a place where they are not exposed to direct sunlight for one day, then the SIM card part is cut out and the remaining part is buried in the soil in a room with a room temperature of about 23 ° C and a humidity of about 40%. Water was added regularly to prevent the soil from drying out. The number of days required for germination varies depending on the type of seed, so it cannot be clearly specified how many days later. However, after the number of days required for each seed to germinate sufficiently, the germination rate of each sample was measured. Results were obtained. This germination rate was determined by preparing five samples containing about 10 seeds for each sample.

  A vulcanized fiber (manufactured by Toyo Fiber Co., Ltd.) having a thickness of 0.75 to 0.81 mm was used as a base material, and a magnetic recording layer and a cutout portion that could be cut into a mini magnetic card shape were provided on a part thereof. In addition, a hole of direct line 5mm is provided in the part other than the cut out in the shape of a mini magnetic card, and a seed and a magic crystal having a particle size of about 0.2 to 0.8 mm (manufactured by Matsuno Kogyo Co., Ltd.) are provided therein. 3) and sealed on both sides with 0.065 mm thick water-soluble paper 30MDP (manufactured by Nippon Paper Papillia Co., Ltd.) with starch paste as an adhesive layer, and shown in FIG. 3 (c). A shaped seed storage medium was obtained. The storage amount of the polymer absorbent was approximately the same as the seed. The seeds stored in the seed storage medium were changed to sweet basil, rose gypsophila, forget-me-not, and peppermint to give samples 2-1, 2-2, 2-3, 2-4.

Samples 2-1 to 2-4 were dried in a place where they were not exposed to direct sunlight for one day, then the mini-magnetic card part was cut out, and the remaining part was hydroponically cultivated at room temperature of about 23 ° C and humidity of about 40%. It was left to stand on the sponge for cultivation and watered, and water was regularly given so that a sponge might not dry completely after that. Then, after a sufficient number of days had elapsed for each seed to germinate, the germination rate of each sample was measured, and the results shown in Table 2 were obtained. This germination rate was determined by preparing five samples containing about 10 seeds for each sample.

[Comparative Example 1]
A seed storage medium was obtained in the same manner as in Example 1 except that the polymer absorbent was not stored in the concave portion of the base material and only the seed was stored. Samples 3-1, 3-2, 3-3 and 3-4 were obtained by changing the seeds stored in the seed storage medium to sweet basil, rose gypsophila, forget-me-not and peppermint.

After drying samples 3-1 to 3-4 in a place where they were not exposed to direct sunlight for one day, the SIM card part was cut out and the remaining part was placed in the soil at room temperature of about 23 ° C and humidity of about 40%. Water was buried and water was given regularly to prevent the soil from drying out. The number of days required for germination varies depending on the type of seed, so it cannot be clearly specified how many days later. However, after the number of days required for each seed to germinate sufficiently, the germination rate of each sample was measured. Results were obtained. This germination rate was determined by preparing five samples containing about 10 seeds for each sample.

  When Examples 1 and 2 and Comparative Example 1 are compared, in Examples 1 and 2 that satisfy the configuration of the seed storage medium in the present invention, the polymer absorbent housed in the seed storage part absorbs moisture and expands. It was found that the germination rate was improved as compared with Comparative Example 1 in all types of seeds. Further, in Examples 1 and 2, although there was variation depending on the kind of seeds, a stable germination rate was obtained and the growth was smooth. It was germinated by falling into the soil from the end of the film, the stem portion in the soil was white like bean sprouts, and the leaves were more yellowish green than in the examples, and poor growth was observed.

  Furthermore, in Examples 1 and 2, since both the base material and the cover film have biodegradability or water solubility, after being buried in soil or left on a hydroponics sponge, gradually. It was found that it was highly decomposed or dissolved, and was also suitable for ecology.

DESCRIPTION OF SYMBOLS 1 ... Seed storage medium 2 ... Base material 3 ... Recessed part 4 ... Hole part 5 ... Seed 6 ... Polymer absorber 7 ... Cover film 8 ... Adhesive layer 9 ... Cut-off part 10 ... Contact IC module 11 ... IC chip 12 ... Antenna 13 ... Magnetic recording part

Claims (7)

A base material provided with a seed storage unit;
Seeds and polymer absorbers stored in the seed storage unit;
A seed storage medium comprising: a cover film covering at least the seed storage unit.   The seed storage medium according to claim 1, wherein the seed storage unit is a recess or a hole.   The seed storage medium according to claim 1 or 2, wherein the seed is adhered to the cover film.   The seed storage medium according to any one of claims 1 to 3, wherein the cover film is water-soluble or biodegradable.   The seed storage medium according to any one of claims 1 to 4, wherein the cover film and the base material are bonded together with a biodegradable adhesive.   The seed storage medium according to any one of claims 1 to 5, wherein the base material is provided with a cutout part capable of cutting the base material into a shape including at least the seed storage part. . The base material is provided with an information recording part consisting of an IC chip or a magnetic recording layer,
The seed storage medium according to claim 6, wherein the cutting unit is capable of dividing the base material into a part including at least the seed storage part and a part including at least a part of the information recording part.

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