JPH06205602A - Tacky adhesive sheet for sowing - Google Patents

Abstract

PURPOSE:To provide the subject sheet composed of a specific sheet-formed substrate and a tacky adhesive applied to the substrate, capable of sowing seeds to prescribed positions in high accuracy and efficiency and having excellent workability. CONSTITUTION:The objective sheet is composed of (A) a substrate consisting of a water-insoluble paper 1, laminated with a polyethylene film 2 on the surface and having strong releasability on the surface to apply a tacky adhesive 4 compared with the other surface and (B) a tacky adhesive 4 applied to the substrate in spots or stripes.

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, the quality and germination rate of seeds have been dramatically improved due to the F ₁ conversion of seeds and the like, so that it has been strongly demanded 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 of using a seeding machine, in which case seeds of a small diameter are wrapped with a protective agent to increase the particle size and uniform the shape, and sow these at an appropriate interval, (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 made of water-insoluble paper.
In addition, it can be achieved by using a pressure-sensitive adhesive sheet for seeding, which is a support having a polyethylene film laminated on both sides thereof.

[0007]

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 the seeds that had normally germinated among the seeds mounted on the adhesive coated part were in the desired position on the nursery bed. Remains, and unsuccessful germination, ungerminated seeds and unnecessary support for raising seedlings are removed.

When the seedling pressure-sensitive adhesive sheet was used for sowing, even when the seedling raising boxes were stacked and germinated, they were sandwiched between the seedling raising mat and the upper stage raising seedling 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.

Also, 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.

As the water-insoluble material used as the support, various kinds of materials such as paper can be used as long as they are strong enough to be peeled off from the nursery mat or the nursery bed when wet. can do. Also,
Examples of the film to be laminated on the surface of the support include a polyethylene film.
The pressure-sensitive adhesive can be easily applied in the form of dots directly onto a sheet-shaped support obtained by laminating a polyethylene film. By laminating the polyethylene film on both sides of the support, the morphology of the sheet can be kept stable against changes in environmental conditions such as temperature and humidity.
Further, by subjecting the pressure-sensitive adhesive coated surface to a peeling treatment in advance, when the sheet is peeled off from the nursery mat or the nursery floor, it becomes easy to peel between the water-insoluble support and the pressure-sensitive adhesive, and the seeds are raised on the nursery mat or The rate of remaining on the nursery bed increases. Furthermore, by performing a release treatment lighter than the pressure-sensitive adhesive coated surface on the side opposite to the pressure-sensitive adhesive coated surface, the pressure-sensitive adhesive coated surface can be stacked and stored as it is without being covered with another protective paper.

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.

[0012]

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

[0013]

Example 1 FIG. 1 is a partially enlarged perspective view showing the constitution of an example of the pressure-sensitive adhesive sheet for seeding according to the present invention, in which a polyethylene film 2 is laminated on both surfaces of a water-insoluble support 1, and the polyethylene film It shows that the pressure-sensitive adhesive 4 is applied in dots on one surface 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 water-insoluble adhesive was applied to 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 an interval of 23 mm in both length and width. By sprinkling an appropriate amount of leek seeds on the pressure-sensitive adhesive coated surface of the obtained pressure-sensitive adhesive sheet, it was possible to mount an average of 2 seeds per pressure-sensitive adhesive coated site.

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 pressure-sensitive adhesive sheet for seeding was peeled off from the mat for raising seedlings. At this time, about 93% of the seeds were rooted, and about 98% of the rooted seeds remained on the seedling raising mat as normal seedlings with roots extended in the seedling raising mat.

The pressure-sensitive adhesive sheet for seeding 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.

[0017]

Example 2 Another example of the seeding pressure-sensitive adhesive sheet of the present invention will be described. In this case, the water-soluble pressure-sensitive adhesive was printed on the polyethylene film on the same water-insoluble support as in Example 1 and dried to obtain a pressure-sensitive adhesive sheet for seeding. On the water-soluble adhesive surface of this sheet, in the same manner as in Example 1,
Allium seeds were mounted 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.

[0018]

As described above, by using the pressure-sensitive adhesive sheet for sowing as the pressure-sensitive adhesive sheet having the constitution of the present invention, the problems of the prior art can be solved, and a wider variety of seed types and cultivation methods can be obtained. On the other hand, it was possible to provide a pressure-sensitive adhesive sheet for sowing, which enables a desired number of seeds to be placed and germinated on a nursery mat or a nursery bed at desired intervals with high positional accuracy and efficiency.

[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 support, 2 ... Polyethylene film, 3 ...
Release agent, 4 ... Adhesive, 5 ... Leek seed, 6 ... Nursery box, 7 ...
Nursery mat.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Susumu Kamijo 3819 Noborito, Tama-ku, Kawasaki City, Kanagawa Prefecture Sliontech Co., Ltd. (72) Tadao Kaneko 3819, Noboto, Tama-ku, Kawasaki City, Kanagawa Prefecture (72) Inventor Eiaki Kobayashi 3819 Noborito, Tama-ku, Kawasaki, Kanagawa Prefecture Sliontech Co., Ltd. (72) Inventor Shigeo Uchida 3819 Noboto, Tama-ku, Kawasaki, Kanagawa Prefecture (72) Inventor Kunihiko Murai Ten, Kaifu-gun, Aichi Prefecture Yoyama Village 1-37 Saka Nakachi M-type Hydroponic Research Institute Co., Ltd. (72) Inventor Shinji Murai 14 Akai Prefecture Kaifu District 1-chome Yamanaka Sakachuchi 1-37 M-type Hydroponic Research Co., Ltd.

Claims (3)

[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 made of water-insoluble paper, and a polyethylene film is laminated on both surfaces of the support. A pressure-sensitive adhesive sheet for sowing, which is a support. 2. The seeding pressure-sensitive adhesive sheet according to claim 1, wherein the support is a support having a peeling property in which the surface on which the pressure-sensitive adhesive is provided is heavier than the opposite surface. 3. The pressure-sensitive adhesive sheet for seeding according to claim 1, wherein the pressure-sensitive adhesive is a pressure-sensitive adhesive provided in a dot shape or a stripe shape on a support.