JPH0779569B2 - Seeding adhesive sheet - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seeding pressure-sensitive adhesive sheet used for sowing and raising seedlings of hydroponic vegetables, and in particular, sowing seeds at a desired position with high position accuracy and efficient workability of sowing. The present invention relates to a pressure-sensitive adhesive sheet for seeding, which can be remarkably improved.

[0002]

2. Description of the Related Art In hydroponics, usually, a method is employed in which seedlings are once sown on a small-area seedling-growing mat, germinated and raised, and then the seedlings are planted. Conventionally, in this work,
Sowing was done by hand, but with the decrease in the number of agricultural engineers and the aging of the population in recent years, improvement in workability is becoming more important. Further, in the past, since the quality of seeds was heterogeneous, it was unavoidable to sow seeds in excess of the required number, germinate and raise seedlings, and then leave high-quality seedlings and thin other seedlings. However, in recent years, due to the dramatic improvement in seed quality and germination rate due to seed F ₁ conversion and the like, there has been a strong demand to significantly reduce the sowing amount. The following methods have been proposed for the purpose of improving the workability and reducing the seeding amount. That is, (1) a method using a seeding machine, in which case seeds with a small diameter are wrapped with a protective agent to increase the particle size and uniform the shape, and sow these at appropriate intervals, (2) sowing sheet A method of seeding using
And so on.

Here, in the seeding method of (2) above, a pressure-sensitive adhesive sheet is obtained by applying a pressure-sensitive adhesive in a dot form on one surface of a water-soluble sheet-like support, and attaching seeds to the pressure-sensitive adhesive-coated site. A method (disclosed in Japanese Patent Laid-Open No. 1-296909) has been developed in which the seedlings are placed on a seedling mat. When this adhesive sheet is used, many kinds of seeds can be easily mounted at a desired position in a desired number, but a thick root such as a leek seed is rooted and a seedling mat is formed. This seeding sheet cannot be applied if it is difficult to grow, and the seeds are pushed into the urethane mat one by one, or the seeds are placed on the urethane mat and the seedling boxes are stacked and germinated by applying pressure. The germination method is adopted. When a conventional seeding sheet is applied to this and the seed is placed on a urethane mat, the base material of the seeding sheet absorbs water to form a gel, and the seed forms a gel-like paper base material by the stacked seedling raising boxes. It has been recognized that there are problems such as burial inside, insufficient oxygen supply to seeds, and uneven germination.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As described above, the conventional seeding sheet cannot be applied to the seedlings having thick roots and difficult to grow in the seedling raising mat, and labor saving such as seeding cannot be promoted. , This solution was strongly desired.

The object of the present invention is to solve the above-mentioned problems of the prior art and to provide hydroponically grown vegetables whose rooting is difficult only by sowing on the germination floor surface at desired intervals on a nursery mat. It is an object of the present invention to provide a pressure-sensitive adhesive sheet for sowing, which allows a desired number of seeds to be placed and germinated with high positional accuracy and efficiency.

[0006]

Means for Solving the Problems The above object is to provide a seeding pressure-sensitive adhesive sheet comprising a sheet-shaped support and an adhesive provided on the support, wherein the support is coated on both sides of a water-insoluble paper. This can be achieved by a pressure-sensitive adhesive sheet for seeding, which is a support obtained by laminating a polyethylene film.

In this case, the adhesive is applied on the support.
Shape or streaks.

[0008]

First, the method of using the pressure-sensitive adhesive sheet for seeding according to the present invention will be described. First , the pressure-sensitive adhesive sheet for seeding of the present invention, on which seeds are mounted, is placed on the nursery bed which has sufficiently absorbed water with the seed mounting surface facing down. A few days later, when the roots of the seeds grew in the nursery bed, when the support was peeled from the nursery bed, only seeds normally germinated among the seeds mounted on the adhesive-coated part were in the desired position on the nursery bed. Remaining, poorly germinated, ungerminated seeds
And the seed coat after germination is removed together with the support
It

When the seedling adhesive sheet was used for sowing, even when the seedling raising boxes were stacked and germinated, the seedling raising mat was sandwiched between the seedling raising mat and the upper seedling raising box as in the case of using the water-soluble support. There is no risk of germination damage due to lack of oxygen due to seeds being buried in the gel-like water-soluble support. It never happens.

Further, by using the pressure-sensitive adhesive sheet for sowing of the present invention, regardless of the size, shape, etc. of seeds,
A desired number of seeds can be easily mounted at a desired position on the sheet. That is, when it is desired to mount the seeds in a dot shape on the pressure-sensitive adhesive sheet, a pressure-sensitive adhesive having a desired size and shape is applied to a desired site on the support, and the seed is applied to the pressure-sensitive adhesive-coated site. do it. At this time, the size of the seed to be loaded,
The size and shape of the pressure-sensitive adhesive coated portion are determined in advance according to the shape. To mount the seeds on the adhesive sheet, the seeds may be spread over the entire surface by appropriately spraying the seeds on the adhesive-coated surface, and then tilting the adhesive sheet to remove the excess seeds.

By the way, seeds are attached to the surface of the support.
If the adhesive force between the adhesive and the support surface is too strong, the support will
When seedlings are removed from the nursery bed, they germinate normally and become a nursery bed.
Part of the seedlings with extended roots were also pulled out of the nursery bed and peeled off.
It is removed together with the scraped support. However, on both sides of the paper
Use a polyethylene film laminated support
Adhesion weakens the adhesive force between the support and the adhesive,
In the case of normal seedlings that have grown into the nursery bed,
Polyethylene film and adhesive are better for holding the floor
It becomes stronger than the adhesive force between the support and peels the support from the nursery bed.
When the adhesive is
As a result, the adhesive remains with the seedlings on the nursery bed. Therefore, on
Laminate the polyethylene film on both sides of the paper as
Using a support that has been treated with a tooth ensures that normal shoots will grow.
Can be left on the floor.

Further, the pressure-sensitive adhesive can be easily and directly applied in the form of dots on a sheet-like support obtained by laminating polyethylene films on both sides of paper . Also, as mentioned above
In terms of the effect of various cultivation conditions, polyethylene film is not
If it is laminated only on the adhesive coated surface of water-soluble paper
Good, but laminated polyethylene film on both sides of the paper
Using the treated support makes it easier to manufacture and use.
Even if environmental conditions such as temperature and humidity change,
It is possible to prevent deformation due to curling of the holding body,
Can be kept stable.

The adhesive will be briefly described below.
The pressure-sensitive adhesive is generally present as a solvent system or an emulsion system, and can be applied to a base material and dried to develop a pressure-sensitive adhesive property capable of easily capturing seeds. There are also pressure sensitive adhesives that are applied at high temperatures. Many adhesives dissolve in organic solvents, but adhesives that dissolve or disperse in water can also be used.

[0014]

EXAMPLES Hereinafter, the pressure-sensitive adhesive sheet for seeding of the present invention will be specifically described with reference to Examples.

(Example 1) FIG. 1 is a partially enlarged perspective view showing the constitution of an example of the pressure-sensitive adhesive sheet for sowing of the present invention. A polyethylene film 2 is laminated on both surfaces of a water-insoluble paper 1 and the polyethylene It is shown that the adhesive 4 is applied in a dot shape on one surface of the film 2 and the release agent 3 is applied on the other surface.

FIG. 2 is a view showing a cross section taken along the line AA ′ of FIG. 1 when the seed 5 is mounted on the adhesive coated portion of the adhesive sheet of FIG. First, an acrylic non-water-soluble pressure-sensitive adhesive 4 was applied on the non-release treated surface of a single-sided release paper having polyethylene laminated on both sides in a dot shape with a diameter of 1.2 mm and a vertical and horizontal spacing of 23 mm. By sprinkling an appropriate amount of leek seeds on the coated surface of the pressure-sensitive adhesive 4 of the obtained pressure-sensitive adhesive sheet, an average of 2 seeds could be mounted per coated site of the pressure-sensitive adhesive 4 .

As shown in FIG. 3, this seed-loading seeding pressure-sensitive adhesive sheet is placed on the seedling-mounting mat 7 in a seedling-raising box 6 with sufficient water absorption, with the seed-loading side facing down, as shown in FIG. After stacking as described above and germinated for 5 days, the seeding pressure-sensitive adhesive sheet was peeled off from the seedling-growing mat 7. At this time, application of adhesive 4
Of the seeds 5 mounted on the site, those that germinated normally
Only remains at the desired position on the seedling mat 7 and does not germinate badly.
Germination seeds and seed coats after germination are
Was removed. And about 93% of the seeds are rooted,
About 98% of the rooted seeds were left on nursery mat 7 as a normal seedlings obtained by extending the roots in seedling mat 7.

Seed using this pressure-sensitive adhesive sheet for seeding
And even when the seedling raising boxes 6 are stacked and germinated,
Raising seedling mat 7 and upper row seedlings as if using a support
The seeds are placed in the gel-like water-soluble support sandwiched between the box 6 and
Buried due to lack of oxygen etc.
There is no fear, and like when using a water-soluble support
In the process of raising seedlings, there is no risk of damage due to substrate drying.
Yes. In addition, the dot-shaped sticking substance that attaches the seed 5 to the support surface is used.
If the adhesive force between the adhesive 4 and the surface of the support is too strong, the support will be
When the seedlings are removed from the seedling mat 7, they germinate and grow normally.
Some of the seedlings whose roots have grown on the seedling mat 7 are also seedling mats 7.
And removed with the peeled backing. Shi
On the other hand, laminating the polyethylene film 2 on both sides of the paper 1.
When the support treated with a coating is used, the support and the adhesive 4
Adhesion between is weakened, roots not extend to the nursery Ma Tsu door 7
In the case of normal seedlings, the retention between the root and the seedling mat 7
The force is between the polyethylene film 2 and the adhesive 4.
It became stronger than the adhesive strength and the support was peeled off from the seedling raising mat 7.
From the side of the polyethylene film 2, the adhesive 4
The adhesive 4 remains on the seedling raising mat 7 together with the seedlings. did
Laminate the polyethylene film 2 on both sides of the paper 1.
Using a support that has been treated with a tooth ensures that normal shoots will grow.
Can be left on the mat 7. Also, cultivation as described above
From the viewpoint of the above effect, the polyethylene film 2 is non-water.
Laminate only on the coated surface of adhesive 4 of soluble paper 1
You can use polyethylene film 2 on both sides of paper 1
Using the minated support, manufacturing process and use
If environmental conditions such as temperature and humidity have changed during the process,
However, it is possible to prevent deformation due to curling of the support.
The shape can be kept stable. Therefore more
On a seedling mat 7 for a wide range of seed types and cultivation methods
The desired number of seeds at a desired interval can be positioned accurately, and
Can be placed and germinated efficiently.

The seeding pressure-sensitive adhesive sheet produced in this example did not require protection of the pressure-sensitive adhesive coated portion with another release paper, and could be stacked and handled as it was.

(Example 2) Another example of the pressure-sensitive adhesive sheet for seeding according to the present invention will be described.
It In this case, the water-soluble adhesive is printed on a polyethylene film on the paper of the same water-insoluble as in Example 1 to obtain a seeded adhesive sheet and dried. Onion seeds were mounted on the water-soluble pressure-sensitive adhesive surface of this sheet in the same manner as in Example 1 and germinated. In this case, 95% of seeds remained on the nursery mat from which the adhesive sheet was removed, and only 5% of the seeds adhered to the adhesive sheet and removed.

[0021]

As described above, the use of the pressure-sensitive adhesive sheet for sowing as the pressure-sensitive adhesive sheet of the present invention allows germination.
There is no risk of damage, and the base material is dried during the seedling raising process.
The seedbed that ensures normal buds without causing damage
Can be left on and can be deformed due to curling of the support
Can be prevented and keep the form stable?
Et al., Provides more for a wide range of seed types and cultivation method, positional accuracy of the desired number of seeds at desired intervals in nursery mat or seedling bed, yet efficiently placed, sowing adhesive sheet capable of germinating We were able to.

[Brief description of drawings]

FIG. 1 is a partially enlarged perspective view showing a schematic configuration of an embodiment of a pressure-sensitive adhesive sheet for seeding according to the present invention.

FIG. 2 is a cross-sectional view taken along the line AA ′ of FIG. 1 in a state where seeds are mounted on the adhesive sheet of FIG.

FIG. 3 is a cross-sectional view showing a state in which the seed-carrying adhesive sheet of FIG. 2 is placed on a seedling-growing mat in a seedling-growing box.

FIG. 4 is a cross-sectional view showing a state in which the nursery boxes having the configuration of FIG. 3 are stacked.

[Explanation of symbols]

1 ... Water-insoluble paper , 2 ... Polyethylene film, 3 ... Release agent, 4 ... Adhesive, 5 ... Leek seed, 6 ... Nursery box, 7 ... Raising mat.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadao Kaneko 3819 Noborito, Tama-ku, Kawasaki City, Kanagawa Prefecture, Sliontech Co., Ltd. ) Inventor Shigeo Uchida 3819 Noborito, Tama-ku, Kawasaki City, Kanagawa Prefecture Sliontech Co., Ltd. (72) Inventor Kunihiko Murai 1-37, Sakachuchi, 14 Yamamura, Kaifu-gun, Aichi Prefecture ) Inventor Shinji Murai 1-37, Sakachuchi, 14 Yamamura, Kaifu-gun, Aichi Prefecture, M-type hydroponic research institute

Claims (2)

[Claims] 1. A seeding pressure-sensitive adhesive sheet comprising a sheet-shaped support and a pressure-sensitive adhesive provided on the support, wherein the support is a water-insoluble paper laminated with polyethylene films on both sides. An adhesive sheet for seeding, which is characterized in that 2. A method according to claim said adhesive, characterized in that it is a pressure-sensitive adhesive provided on the dot-like or stripe-like on the support 1
The pressure-sensitive adhesive sheet for seeding according to.