JPH0734882Y2 - Sustained release pheromone formulation - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is a sustained release pheromone preparation,
In particular, the present invention relates to a pheromone preparation capable of gradually releasing a pheromone substance used for controlling pests at a constant rate for a long period of time and easily attached to trees and the like.

[0002]

2. Description of the Related Art Recently, a sex pheromone substance effective for controlling pests is enclosed in a container, which is stably installed in a predetermined place such as a field for a long period of time to gradually and continuously store the pheromone substance. There is an increasing demand for pheromone preparations to be released, and many proposals have been made to solve the technical problems. An important property required for pheromone formulations is to release the pheromone substance at a uniform rate over a long period of time and to minimize the loss of the pheromone substance remaining adsorbed in the container.

As a preparation form satisfying such requirements, it is known that a liquid pheromone substance is enclosed in a container provided with a barrier layer having appropriate permeability to the liquid pheromone substance. Formulations of this type include, for example, microencapsulation of pheromone substances (US Pat. No. 2,8,8).
No. 00,457 and No. 2,800,458) and a pheromone substance enclosed in a polyolefin capillary tube (Japanese Patent Laid-Open No. Sho.
56-142202, 57-9705, etc.) and the like. The former has not been used much because of the fact that pheromone loss during microencapsulation is not small and the release rate is too large and the life is short due to its large surface area. The latter generally uses thick tubes,
In addition, measures have been taken to increase the engagement with trees, such as by adding metal wires. This has the advantage of being excellent in sustained release and having a long life, but has the drawback that the release rate slightly decreases in the latter half of the release.

[0004]

Therefore, the present applicant has previously proposed a bag-shaped pheromone preparation comprising a thin laminated film using a polymer material having an appropriate barrier property against a pheromone substance. Since the inner surface of the barrier wall is always uniformly wet with the liquid pheromone substance in this formulation, there is no change in the release rate over time and a uniform rate can be maintained for two months or more. It has advantages such as little residual loss of pheromone substance after release. However, this has a drawback that a string or the like has to be prepared separately for installation at a desired place, which requires a great deal of labor and cost for application.
Therefore, the object of the present invention is that it can be mass-produced by industrial means, is easier to install than the conventional one, and can be easily detached not only against wind and rain but also when exposed to water pressure, wind pressure, etc. during plant cultivation. In order to provide a sustained-release pheromone preparation without a drug.

[0005]

Means for Solving the Problems The present invention has been achieved as a result of research for solving the above-mentioned problems. This sustained-release pheromone preparation has a suspension part composed of a plurality of laminated sheet pieces. A bag made of a polymer material containing a pheromone substance is continuously provided vertically, and the suspension part has a locking hole at the center, and the peripheral position thereof does not match the relative position of each sheet piece, A cutting line is provided across the sheet, and the lower portions of the respective sheet pieces are connected to each other.

The details of the present invention will be described below with reference to the accompanying drawings. 1 to 5 show a sustained release pheromone preparation according to the present invention as first to fifth different embodiments, in which 11, 21, 31, 41, and 51 are suspension parts, 12 respectively. , 22, 32, 42, 52 have lower edges 13, 23, 3 respectively
It is a bag part that is continuously provided along 3, 43, and 53. Each suspension part 1
1, 21, 31, 41, 51 have locking holes 14, 2 at their central portions.
4, 34, 44, 54 with respective lower parts 15, 25, 35, 4
It is composed of a plurality of laminated sheet pieces 16 ..., 26 ..., 36 ..., 46 ..., 56 ... which are connected to each other by 5, 55, and the peripheral edge portions 17 of the locking holes of these sheet pieces are ... , 27 ..., 37 ..., 47
…, 57…, the cutting lines 18…, 28…, 38…, that cross the sheet at locations where the relative positions do not match.
48 ..., 58 ... are provided.

As long as the relative positions of the laminated sheet pieces do not coincide with each other, the cutting lines are provided along the peripheral edges 17, 37, 47 along the straight lines 18, 38, as shown in FIGS. 1, 3 and 4. Even if it crosses at 48, as shown in FIG. 2 and FIG.
27, 57 may be crossed by polygonal lines 28, 58, and FIG.
~ Even at positions (18, 28, 38) distant from each other at the peripheral edges 17, 27, 37 as shown in Fig. 3, even at the peripheral edges 47, 57 as shown in Figs. Positions where they intersect each other (48,
58), but it is preferable that they are symmetrical to each other with respect to the line passing through the center of the locking hole, because they are easy to attach to the branches of this pheromone formulation, which will be described later, and are hard to come off. It is not preferable to be in the positional relationship of.

Each sheet piece is shown in FIGS. 1 and 2 below the locking holes 14, 24 or cut lines 18, 28, and in FIGS. 3-5 the locking holes 34, 44 ,. 54
Or below the cut lines 38, 48, 58 or in the locking holes 34, 4
They are connected to each other at the part where there is no cutting line on the opposite side to 4, 54. As shown in FIG. 1, the sheet pieces may be formed by cutting out the corner portions 19 of the upper edge so that the relative positions thereof are not coincident with each other, and the sheet pieces are preferably laminated at positions symmetrical to each other. The attachment of the present pheromone preparation to a tree branch or the like can be further facilitated (as described below). The shape of the locking hole provided in the center of the sheet piece is a circle, an ellipse, a semicircle, a triangle, a square, a rhombus,
In addition to polygons such as trapezoids, fan-shaped, eye-shaped, star-shaped, etc. can be selected arbitrarily. The sheet piece is preferably made of a polyolefin such as polyethylene or polypropylene, a polymer material such as polyester or polyamide, and a material having appropriate flexibility, strength and water resistance such as cardboard, a thin plate and a metal sheet. In addition to the square ring shown in the figure, triangular ring, polygonal ring of five or more pentagons, circular ring, elliptical ring, semi-circular ring, and fan, eyebrows, star, etc. with a locking hole of the above shape in the center And so on.

The other bag portions 12, 22, 32, 42, 52 are two polymer films 61, as shown in FIG. 6 as a cross-sectional view of the bag portion 12 of the first embodiment. , 61 are overlapped with each other, and they are bonded to each other at the four edges 62, 62 by heat or ultrasonic waves, or by an adhesive, or a piece of a polymer material film (not shown) is attached. Fold and stack, and join the remaining three edges in the same way, or cut a tubular film (not shown) made of polymer material in the width direction to flatten it,
A bag body is formed by joining the opening edges before and after it with the same means, and the liquid pheromone substance 63 is contained inside.
Is enclosed. The shape of these bag parts 12 ...
Similar to the illustrated quadrilateral shape, it may be replaced by a semicircular shape, a circular shape, a polygonal shape or the like, and may be formed by connecting several bags like a powder medicine container. it can.

The film 61 made of a polymer material used for the bag portion 12 has a proper barrier property against the pheromone substance, and includes, for example, polyolefin, ethylene-vinyl acetate copolymer, polyvinyl chloride, polyester, If necessary, a plasticizer, a stabilizer, and various processing aids are added to polyvinylidene chloride and a copolymer thereof, and two or more obtained by a commonly known inflation method, T-die molding method or the like. It can be easily obtained by laminating the film. The total thickness of this film is preferably 10 to 200 μm. This film thickness is 10μ
If it is less than m, the strength as a preparation is insufficient, and 200 μm
If it exceeds, the processability in forming a bag is remarkably poor, and the advantage that the inner surface of the preparation, which is characteristic of the bag-like preparation, is always wet with the liquid pheromone substance, may be lost due to its rigidity.

The size of the bag portion 12 has a great influence on the evaporation rate of the pheromone substance as well as the selection of the material and the film thickness, so it is necessary to make it appropriate, but the ease of filling and bag making and the economical practicality. Therefore, as the actual surface area of the release, that is, the area of the part that is wet with the pheromone substance,
It is desirable to be within the range of 000 mm ² . The width of the seal portion is preferably at least 3 mm or more in order to prevent leakage of the pheromone substance and maintain sufficient seal strength. The liquid pheromone substance 63 filled and used in the bag portion 12 is an active pheromone substance composed of a compound such as unsaturated acetate, aldehyde, ketone, or alcohol having 10 to 23 carbon atoms. These are used as one kind or as a mixture of two or more kinds, but an antioxidant, an ultraviolet absorber, a colorant and the like may be added if necessary.

The suspension 11 and the bag 12 are used at their respective edges as shown in the drawing when they are in line contact with each other and at their contact points when they are in point contact. Heat seal, ultrasonic, depending on the type of material
It is joined by an adhesive or mechanical means such as a stapler or eyelet punch. Further, when the suspension portion 11 and the bag portion 12 are made of the same material, both can be formed integrally.

[0013]

Next, the procedure for attaching to the resin or the like of the present invention will be described first with reference to FIG. 7 in which the pheromone preparation of the first embodiment is taken as an example. In order to attach this pheromone preparation to a tree branch or the like, since the corner portion 19b of the sheet piece 16b is lacking, if the sheet piece 16a of this portion is pressed against the tip of the tree branch 20 or the like, a gap with the sheet piece 16b is widened. It is possible (see FIG. A). Next, between the sheet pieces 16a and 16b, a tree branch 20
When the front ends of the sheet pieces 16a are pushed in (see Fig. B) and are inserted into the locking holes 14a through the cutting line 18a of the sheet piece 16a, and the rear portion is inserted into the locking holes 14b through the cutting line 18b of the sheet piece 16b, both sheet pieces 16a , 16b can be quickly restored to their original shape due to their proper flexibility and strength, and can be completely attached (see FIG. C).

On the other hand, regarding the pheromone preparations of the second to fifth embodiments in which the corners of the sheet pieces are not chipped, the second embodiment will be described as an example. By pressing the upper end of the sheet piece 26 first, the gap between the sheet pieces 26, 26 can be widened at the cutting line 28, so that the sheet pieces 26 can be easily attached in the same manner as described above. The pheromone formulation of the present invention also has a cutting line that crosses the periphery of the suspension portion from the central locking hole toward the peripheral edge at a position where the relative positions of the sheets do not match. Therefore, it is possible to attach with one touch by pressing the edge of the cutting line openly against the tip of a tree or the like.

As described above, the sustained-release pheromone preparation of the present invention can be attached to a tree branch or the like very easily. Also, since each sheet piece 16 has overlapping parts, it is easy not only against wind and rain but also against water pressure when spraying or spraying chemicals, wind pressure by a harvester, etc. There is an advantage that it does not come off.

[0016]

[Advantage of the Invention] The sustained-release pheromone preparation according to the present invention can be mass-produced by industrial means, is easier to install than conventional ones, and is not only against wind and rain, but also under pressure and wind pressure during plant cultivation. It has the advantage that it does not easily come off even if it is exposed to

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of the pheromone preparation according to the present invention.

FIG. 2 is a front view showing a second embodiment of the pheromone preparation according to the present invention.

FIG. 3 is a front view showing a third embodiment of the pheromone preparation according to the present invention.

FIG. 4 is a front view showing a fourth embodiment of the pheromone preparation according to the present invention.

FIG. 5 is a front view showing a fifth embodiment of the pheromone preparation according to the present invention.

FIG. 6 is a transverse cross-sectional view of the bag portion taken along the line AA in the first embodiment.

FIG. 7 shows the attachment of the first embodiment to a tree branch,
It is a perspective view shown in order with a figure of (a)-(c).

[Explanation of symbols]

11, 21, 31, 41, 51 ... Suspended parts, 12, 22, 32, 42, 52
… Bag, 14, 24, 34, 44, 54… Locking holes, 15, 25, 3
5, 45, 55 ... Bottom, 16, 26, 36, 46, 56 ... Sheet piece, 1
7, 27, 37, 47, 57 ... peripheral part, 18, 28, 38, 48, 58 ... cutting line, 63 ... pheromone substance.

Claims (1)

[Scope of utility model registration request] 1. A suspending portion composed of a plurality of laminated sheet pieces and a bag portion made of a polymer material containing a pheromone substance are vertically arranged in series, and the suspending portion has a locking hole at the center. A sustained-release pheromone preparation in which a cutting line is provided across the periphery of the sheet pieces at positions where the relative positions of the sheet pieces do not match, and the lower portions of the sheet pieces are connected to each other.