JP3008608U - Sheet for seeding and raising seedlings - Google Patents

Abstract

(57) [Summary] [Purpose] Seeds can be firmly fixed at any interval and number of grains so that they can be easily handled without fear of falling off, and are used for sowing and raising seedlings of various vegetables and flowers. To provide a sheet for sowing and raising seeds that can flexibly cope with spoilage without spoiling germination. [Structure] The above-mentioned objects are: a first water-soluble or water-dispersible layer, a dot-shaped adhesive layer, a seed layer, a water-soluble adhesive layer, a second
Of a water-soluble or water-dispersible layer are sequentially laminated, and the water-soluble pressure-sensitive adhesive layer adheres to the first water-soluble or water-dispersible layer in the seed-absent portion. And a seed-fixing type seeding and raising sheet for preventing movement and loss of seeds, wherein the water-soluble adhesive layer and the second
The water-soluble or water-dispersible layer of (1) forms a laminated structure only in the peripheral portion of the seed, which can be achieved by a sheet for raising seeds.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seed-fixing type seeding and raising sheet for seeding and raising seedlings of vegetables, flowers, etc. on fields and nursery beds, and in particular, seeds are mounted at an arbitrary interval and number of seeds and dropped. The present invention relates to a seedling-growing sheet that can be firmly fixed so that it can be easily handled without fear of damage.

[0002]

[Prior art]

 Conventionally, the sowing work is generally carried out by hand in general, and in some cases, mechanical sowing is also carried out. There are also seed tapes in which seeds are enclosed in a water-soluble tape, seed papers in which the seeds are fixed on a water-soluble non-woven fabric with an adhesive, etc., are placed on the nursery bed to germinate and raise seedlings. Among them, the seed tape is one in which seeds are physically contained in a tape made of a water-soluble film so as not to fall off, but it is difficult to keep the positions between the seeds at an appropriate distance. , It may damage the seedlings. Further, the seed paper is excellent in fixing the seed and setting the position, but since the position where the adhesive and the seed are dropped is mechanically determined, it is difficult to create a pattern in which the seed interval is close, It is difficult to apply to very small seeds.

[0003] Also, a seeding and seedling-growing sheet has been developed which allows a predetermined number of seeds to be simply mounted at predetermined intervals, but this sheet is not intended to firmly fix the seeds. Therefore, it is not suitable for carrying out work such as carrying the sheet with seeds loaded. Furthermore, a seed-growing sheet has also been developed in recent years in which seeds are mounted on the sheet, and then the whole surface is covered with a water-soluble polymer using a water-soluble adhesive to fix the seeds. If the agent does not dissolve quickly when sprinkled, water will accumulate on the sheet, making it impossible to evenly sprinkle it, or because the adhesion to the soil will deteriorate and the sheet will easily dry, Some products will have a negative impact on germination.

[0004]

[Problems to be solved by the device]

 As described above, when the conventional seed-loaded sheet was used, labor saving for seeding and raising seedlings was achieved depending on the purpose of use, but seeds did not fall off during transportation and other work, and It was extremely difficult to sow a predetermined number of seeds at a predetermined position. The object of the present invention is to solve the problems of the above-mentioned prior art and to fix the seeds at an arbitrary interval and number of grains so that they can be easily handled without fear of falling off. It is possible to provide a sheet for sowing and raising seedlings which can be flexibly dealt with sowing and raising seedlings of various vegetables and flowers without impairing germination and can contribute to labor saving of sowing.

[0005]

[Means for Solving the Problems]

 The above-mentioned object is a multilayer structure in which a first water-soluble or water-dispersible layer, a dot-shaped pressure-sensitive adhesive layer, a seed layer, a water-soluble pressure-sensitive adhesive layer, and a second water-soluble or water-dispersible layer are sequentially laminated. And a water-soluble pressure-sensitive adhesive layer that adheres to the first water-soluble or water-dispersible layer in the seed-absent portion to prevent seed migration and drop, for seed-fixing type seedling raising seedlings In a sheet, the above-mentioned water-soluble pressure-sensitive adhesive layer and the second water-soluble or water-dispersible layer form a laminated structure only around the seeds. can do.

[0006]

[Action]

 In the above, as the water-soluble or water-dispersible substrate, water-soluble paper (dissolvo manufactured by Mishima Paper Co., Ltd.), water-soluble nonwoven fabric (quinocloth manufactured by Honshu Paper Co., Ltd.), polyvinyl alcohol, sodium carboxymethyl cellulose sodium salt, etc. , Water-soluble polymers such as hydroxyethyl cellulose, starch, dextrin and sodium acrylate. Among the water-soluble polymers, partially saponified polyvinyl alcohol having a saponification degree of 70 to 90% is particularly effective in view of economy, solubility in water, strength and the like. The first water-soluble or water-dispersible layer is preferably water-soluble paper or water-soluble non-woven cloth having a certain strength in consideration of curl due to moisture absorption, ease of handling, and the like. For the water-soluble or water-dispersible layer, it is preferable to use a transparent water-soluble polymer so that the fixing state of the seed can be visually observed at a glance.

Regarding the loading of seeds, an adhesive having an adhesiveness sufficient to capture the seeds to be sown should be applied accurately at a predetermined position on the first water-soluble or water-dispersible substrate. For example, by sprinkling seeds on this, seeds can be mounted at predetermined positions on the base material at predetermined intervals. The pressure-sensitive adhesive can be applied in any form such as linear or dot-like, but the dot-like application is superior for controlling the number of seeds loaded. In order to mount one seed in one place, the coating area of the adhesive must be sufficiently small compared to the size of the target seed. Screen printing is suitable as a method for applying a dot-shaped adhesive having a small area and arbitrary shapes and intervals. As the type of adhesive, a commercially available adhesive can be arbitrarily selected and used as long as it has no inhibitory effect on the germination of seeds, the growth of seedlings and the like. In addition, when the screen printing method is applied, the adhesive must naturally have excellent printability.

Regarding the pressure-sensitive adhesive used in the above water-soluble pressure-sensitive adhesive layer, a commercially available pressure-sensitive adhesive may be arbitrarily selected as long as it has excellent water solubility and does not inhibit seed germination, seedling growth, etc. You can When water-soluble paper or water-soluble non-woven fabric is used as a water-soluble or water-dispersible substrate, a water-soluble binder that exhibits alkalinity is often used in the molding process, so the water-soluble adhesive is acidic. I would like to use. The thickness of the water-soluble pressure-sensitive adhesive layer should be such that the adhesive strength to the water-soluble or water-dispersible substrate is sufficient and the seeds do not move or fall off and the water solubility is not extremely disturbed. If it is within the range, there is no particular requirement.

The seeding and seedling-raising sheet of the present invention having the above-mentioned configuration can fix any seeds on the base material without dropping off at a predetermined interval and pattern regardless of the size of the seeds. And, when applied on a nursery bed, seeds can be rapidly sown at a predetermined position by a predetermined number of grains, and the constituent materials are water-soluble or water-dispersible and have high adhesion to soil. It dissolves easily and does not interfere with seed germination or seedling growth.

[0010]

【Example】

 Hereinafter, the constitution of the sheet for seeding and raising seedlings of the present invention will be specifically described by way of Examples.

[0011]

Example 1 On a commercially available 300 mm × 600 mm water-soluble paper, a dot of acrylic adhesive having a diameter of 0.3 mm, 5 dots per block, 200 blocks in total (block center interval 27 mm, dot interval; center dot) (7 mm) was screen-printed, and onion seeds were sprinkled on it to mount one seed per dot. Separately, apply a water-soluble adhesive to a commercially available polyvinyl alcohol film using a comma coater, dry it, cut it into 20 mm × 20 mm, and then cut it into blocks on each of the above-mentioned leek seed mounting sheets so as to cover the leek seeds. Pasted together.

FIG. 1 is a plan view of a seed-fixing type seedling raising seedling sheet produced as described above, and FIG. 2 is a cross-sectional view of the seed mounting portion of FIG. 1, where 1 is a water-soluble paper and 2 is a water-soluble paper 1. Adhesive coated on 3 is seed, 4 is water-soluble adhesive, and 5 is polyvinyl alcohol. At this time, the leek seeds were firmly fixed by the water-soluble adhesive, and no problems such as migration and dropout occurred.

The above-mentioned sheet for seeding seedlings of the present invention and a sheet having substantially the same structure as the sheet but having a water-soluble pressure-sensitive adhesive layer and a polyvinyl alcohol layer bonded to the entire surface rather than intermittently are used under the same conditions. They were placed on a nursery bed made of peat moss and subjected to a comparative test of watering, germination, and growth. As a result, when the above-mentioned sheet of the present invention was used, water did not collect on the surface of the sheet at the time of watering, and the adhesion to soil was good. The germination rate was 84% in the latter case, whereas the germination rate was 96% in the case of the sheet of the present invention, indicating an improvement effect.

[0014]

Example 2 On a commercially available 300 mm × 600 mm water-soluble paper, dots of acrylic adhesive having a diameter of 0.2 mm were used, 54 dots per row, 15 rows (block center interval 40 mm, dot interval; 5 mm from center dot). Screen printing was performed, and lisianthus seeds were sprinkled on the screen to mount one seed for each dot of the adhesive. Separately, an aqueous polyvinyl alcohol solution having a saponification degree of 88% (concentration: about 15%) was applied on the polyester film in stripes at intervals corresponding to the above-mentioned acrylic adhesive dots, and dried. This was laminated on the above-mentioned lisianthus seed mounting sheet at a position where polyvinyl alcohol and a water-soluble pressure-sensitive adhesive coated on the lisianthus seeds were covered.

FIG. 3 is a plan view of the seed-fixing type seedling raising seedling sheet produced as described above, and FIG. 4 is a cross-sectional view of the seed mounting portion of FIG. 3, where 1 is a water-soluble paper and 2 is a water-soluble paper 1. A dot-shaped adhesive, 3 is a seed, 4 is a water-soluble adhesive, 5 is polyvinyl alcohol, and 6 is a polyester film used as an auxiliary material. When the polyester film was peeled off, it could be easily peeled off from the polyvinyl alcohol layer, and the fixed state of the eustoma seeds was not impaired.

The above-mentioned sheet for seeding and raising seeds of the present invention and a sheet having substantially the same structure as the sheet but having a water-soluble pressure-sensitive adhesive layer and a polyvinyl alcohol layer bonded to the entire surface rather than intermittently are used under the same conditions. Then, they were placed on a nursery bed made of peat moss, and comparative tests of watering, germination and growth were conducted. As a result, when the above-mentioned sheet of the present invention was used, water did not collect on the surface of the sheet during sprinkling, and the adhesion to soil was good. The germination rate was 52% in the latter case, whereas it was 85% in the case of the sheet of the present invention, showing a significant improvement effect.

[0017]

[Effect of device]

 As described above, the use of the seeding and seedling raising sheet as the sheet of the present invention solves the problems of the above-mentioned conventional techniques, and the seeds may fall off at an arbitrary interval and number of grains. It can be firmly fixed so that it can be easily handled without any damage, and it can flexibly respond to sowing and seedling of various vegetables and flowers without spoiling germination, and can contribute to labor saving of seeding I was able to provide a sheet.

[Brief description of drawings]

FIG. 1 is a plan view showing a schematic configuration of a seeding and seedling raising sheet of Example 1. FIG.

FIG. 2 is a cross-sectional view of the sheet of FIG. 1 cut at a seed mounting portion.

FIG. 3 is a plan view showing a schematic configuration of a seeding and seedling raising sheet of Example 2.

FIG. 4 is a cross-sectional view of the sheet of FIG. 3 cut at a seed mounting portion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Water soluble paper, 2 ... Dot-shaped adhesive, 3 ... Seed, 4 ... Water-soluble adhesive, 5 ... Polyvinyl alcohol, 6
… Polyester film.

Claims (5)

[Scope of utility model registration request] 1. A multilayer structure in which a first water-soluble or water-dispersible layer, a dot-shaped pressure-sensitive adhesive layer, a seed layer, a water-soluble pressure-sensitive adhesive layer, and a second water-soluble or water-dispersible layer are sequentially laminated. Have a structure,
And, the water-soluble pressure-sensitive adhesive layer, in the seed-absent portion adheres to the first water-soluble or water-dispersible layer, the seed fixed type seeding and raising seedling sheet for preventing seed migration and dropout, A sheet for sowing and raising seedlings, wherein the water-soluble pressure-sensitive adhesive layer and the second water-soluble or water-dispersible layer of (3) form a laminated structure only in the peripheral portion of the seed. 2. A multilayer structure in which a first water-soluble or water-dispersible layer, a dot-shaped pressure-sensitive adhesive layer, a seed layer, a water-soluble pressure-sensitive adhesive layer, and a second water-soluble or water-dispersible layer are sequentially laminated. Have a structure,
And, the water-soluble pressure-sensitive adhesive layer, in the seed-absent portion adheres to the first water-soluble or water-dispersible layer, the seed fixed type seeding and raising seedling sheet for preventing seed migration and dropout, The water-soluble pressure-sensitive adhesive layer and the second water-soluble or water-dispersible layer each of which are composed of a multilayer structure forming a laminated structure only in the peripheral portion of the seed, and the polymer on one surface or both surfaces of the multilayer structure. A seeding and nursery sheet comprising a protective layer of a film. 3. The seedling-growing sheet according to claim 1, wherein the water-soluble or water-dispersible layer comprises a water-soluble polymer film or water-soluble or water-dispersible paper. 4. The above water-soluble polymer film has a saponification degree.
The seeding and raising seedling sheet according to claim 3, wherein the sheet comprises 70 to 90% of polyvinyl alcohol. 5. The seeding and seedling raising sheet according to claim 1, wherein the water-soluble adhesive is an acidic adhesive.