JP7611570B2 - Ant poison bait storage container - Google Patents

Description

The present invention relates to a container for storing ant poison bait.

One method of controlling ants is to attract and consume poison bait stored in a poison bait storage container.

In order to efficiently control ants, efforts have been made to develop poison bait with excellent attractant and control performance (e.g., Patent Document 1) and the structure of containers for storing poison bait for ants (e.g., Patent Document 2).

JP 2017-8015 A JP 2013-138669 A

Ant poison bait storage containers are used by storing poison bait and setting it up in places where you want to control ants, such as gardens and parking lots. In addition to efficiently controlling ants, users also want to be able to check the inside of the container to see if ants have settled in the container and how much of the poison bait they have consumed.
The present invention focuses on and studies the composition of ant poison bait storage containers, and aims to provide an ant poison bait storage container that is suitable for ant control and allows the interior of the container to be visually observed.

The present inventors have conducted extensive research to solve the above problems and have arrived at the present invention.
This ant poison bait storage container comprises a lower lid provided with an ant poison bait storage section and an upper lid arranged so as to face the lower lid, and is characterized in that the upper lid contains 0.005 to 0.05% by weight of carbon black.
to provide.

By storing poison bait in the ant poison bait storage container of the present invention, excellent ant control effects can be achieved. In addition, because the inside of the ant poison bait storage container can be seen, it is easy to check whether ants have settled and how much of the poison bait they are consuming.

FIG. 2 is a perspective view showing an example of an ant poison bait storage container. FIG. 2 is a plan view showing an example of an ant poison bait storage container. FIG. 2 is a bottom view showing an example of an ant poison bait storage container. FIG. 2 is a front view showing an example of an ant poison bait storage container. 3 is a cross-sectional view taken along line AA in FIG. 2. 5 is a cross-sectional view taken along line BB in FIG. 4. FIG. 2 is a perspective view of the ant poison bait storage containers in a connected state.

The top lid of the ant poison bait storage container of the present invention contains 0.005 to 0.05% by weight of carbon black. If the content is less than 0.005% by weight, the ability to attract the ants stored therein decreases. If the content exceeds 0.05% by weight, the visibility of the inside of the storage container decreases.

The components in the top cover other than the carbon black are usually resin components. As the resin component, it is preferable to use a styrene-based resin, for example, general-purpose polystyrene (GPPS), high impact polystyrene (HIPS), styrene-acrylonitrile copolymer (SAN), acrylonitrile-butadiene-styrene copolymer (ABS), and other styrene-based resins can be used. In addition to the resin component, antistatic agents, antioxidants, ultraviolet absorbers, etc. may also be added.

The top cover can usually be manufactured by melting and kneading raw materials such as carbon black and resin components in a known kneading machine such as a pressure kneader to obtain resin pellets, and then feeding the resin pellets into an injection molding machine.

For ease of manufacture and cost reasons, the bottom cover is usually manufactured using the same materials as the top cover, but this may be changed as appropriate without impairing the effects of the present invention.

The shape of the ant poison bait storage container of the present invention is not particularly limited as long as it has a bottom lid with an ant poison bait storage section and an top lid arranged opposite the bottom lid, and examples include a cube, rectangular prism, cylinder, polygonal pyramid, cone, etc. Among these, a preferred shape for the ant poison bait storage container is the ant poison bait storage container shown in Figure 1 (hereinafter sometimes referred to as container 1).

Examples of the internal configuration of the ant poison bait storage container include containers having the configurations shown in Figures 1 to 6. The details are described below.

The container 1 is equipped with a bottom lid 10 provided with an ant poison bait storage surface 12, a top lid 20 arranged to face the bottom lid, first to fourth connecting parts 31 to 34 that connect the bottom lid and the top lid with a gap between them, and first to fourth protruding parts 41 to 44 for fixing the poison bait inside the container.

The bottom cover 10 is made of a resin material, is generally flat, and has an octagonal shape when viewed from the bottom of the container 1 as shown in FIG. 3.

The inner surface 10a of the bottom lid 10 located on the inside of the container 1 may be embossed over its entire surface.

The inner surface 10a of the lower cover 10 is formed with a protrusion 11 that protrudes toward the upper cover 20 and extends in the circumferential direction. As shown in FIG. 6, the protrusion 11 is continuous to form a ring, and its center is approximately aligned with the center of the lower cover 10.

The inner portion of the protrusion 11 serves as a poison bait storage surface 12 for storing poison bait.

The thickness of the bottom cover 10 is preferably 0.5 mm to 3 mm.

As shown in FIG. 5, the inner surface 10a of the lower cover 10 has first to fourth connection receiving portions 31a to 34a that are integrally molded with the lower cover 10 to form the first to fourth connection portions. The connection receiving portions 31a to 34a each have a recess so that the connection insertion portions 31b to 34b can be inserted.

The top lid 20 is made of a resin material and has an octagonal shape when viewed from the top of the container 1 as shown in Figure 2.

The inner surface 20a of the top lid 20 located inside the container 1 has first to fourth protrusions 41 to 44 for fixing the poison bait stored in the container 1 to the poison bait storage surface 12. The tips of these protrusions are steeply shaped.

As shown in FIG. 5, the cover 20 has first to fourth connecting inserts 31b to 34b that are molded integrally with the cover 20. The connecting inserts 31b to 34b are inserted into the connecting receivers 31a to 34a to form the connecting sections 31 to 34.

The top lid 20 has a flat surface 20b and an inclined surface 20c on its outer periphery that approaches the bottom lid 10 as it approaches the outer periphery, and the center of the flat surface 20b approximately coincides with the center of the top lid 20. In addition, an end surface 20d is provided on the outer periphery of the inclined surface 20c so as to be perpendicular to the bottom lid, thereby preventing rainwater and dust from entering the container 1.

The outer dimension W1 of the lower cover 10 and the upper cover 20 is preferably 30 mm to 50 mm, and the outer dimension W2 of the flat surface 20b is preferably 10 to 20 mm. In addition, the inclination angle θ of the inclined surface 20c shown in FIG. 4 is preferably 3 to 7°. The outer dimension W3 of the end surface 20d is preferably 1 to 3 mm.

The dimension h between the bottom lid 10 and the top lid 20 is designed to accommodate the poison bait.

As shown in FIG. 7, before use, the container 1 may be integrated into, for example, six pieces connected together. A connecting piece 60 is formed on the outer periphery of the bottom lid 10 of the container 1, which connects to the outer periphery of the bottom lid 10 of an adjacent container 1, and a connecting piece 61 is similarly formed on the outer periphery of the inclined surface 20c of the top lid 20. The connecting pieces 60 and 61 can be broken by applying force in the bending direction, allowing the containers to be separated.

To connect six containers 1, the six bottom lids 10 are first integrally molded so that they are lined up two vertically and three horizontally and are connected by connecting pieces 60. Similarly, the six top lids 20 are also integrally molded so that they are connected by connecting pieces 61.

Then, the top lid 20 is placed over the bottom lid 10, and the bottom lid 10 and the top lid 20 are fitted together as shown in FIG. 5, resulting in six containers 1 being connected together as shown in FIG. 7.

Poison bait is produced by mixing insecticides such as fipronil, attractants such as animal protein powder, grain flour, starch, sugar, and vegetable oil, thickeners such as carboxymethylcellulose, viscosity regulators such as glycerin, preservatives, and water.

The ant poison bait storage container of the present invention stores poison bait and is installed in a location where you want to control ants such as Argentine ants, brown ants, yellow ants, and house ants.

The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

[Example 1]
100 parts by weight of general-purpose polystyrene, 20 parts by weight of impact-resistant polystyrene, and 0.024 parts by weight of carbon black were melt-kneaded in a pressure kneader, and the kneaded product was put into an injection molding machine to obtain a poison bait storage container for ant control of the present invention, which is equipped with a lower lid provided with an ant poison bait storage section and an upper lid arranged so as to face the lower lid, as shown in Figure 1. The outer dimensions of the lower lid 10 and upper lid 20 of the container were 36 mm, the outer dimension W1 of the flat surface 20b was 15 mm, the inclination angle 31d of the inclined surface 31c was 20°, the outer dimension W2 of the end surface 31 was 2 mm, and the dimension h in the direction of separation between the lower lid 10 and the upper lid 20 was 4 mm.
[Example 2]
In Example 1, the amount of carbon black was changed to 0.036 parts by weight to obtain a poison bait storage container for controlling ants according to the present invention.
[Example 3]
In Example 1, the amount of carbon black was changed to 0.012 parts by weight to obtain a poison bait storage container for controlling ants according to the present invention.
[Example 4]
In Example 1, the amount of carbon black was changed to 0.006 parts by weight to obtain a poison bait storage container for controlling ants according to the present invention.

Comparative Example

[Comparative Example 1]
In Example 3, the carbon black was changed to copper phthalocyanine green to obtain a comparative poison bait storage container for controlling ants.
[Comparative Example 2]
In Example 1, the amount of carbon black was changed to 0.0012 parts by weight to obtain a comparative poison bait storage container for controlling ants.

[Creating poison bait]
The poison bait was prepared by mixing 2.5 parts by weight of sodium carboxymethylcellulose (Kanto Chemical Co., Ltd.), 20 parts by weight of sugar (Mitsui Sugar Co., Ltd.), 20 parts by weight of potato starch (Kanto Chemical Co., Ltd.), 15 parts by weight of pupa powder (Marukyu Co., Ltd.), 0.25 parts by weight of thiabendazole (Kanto Chemical Co., Ltd., hereinafter referred to as TBZ), 5 parts by weight of peanut oil (Kanto Chemical Co., Ltd.), and 10 parts by weight of glycerin (Kanto Chemical Co., Ltd.), to which 0.01 parts by weight of 3-iodo-2-propynyl butylcarbamate was added and mixed, and then 0.02 parts by weight of fipronil (Tokyo Chemical Industry Co., Ltd.) and 0.1 parts by weight of pyriproxyfen (Sumitomo Chemical Co., Ltd.) were added and kneaded as control components, and 1 g of the kneaded product was molded into a sphere to prepare a poison bait. The poison bait was then placed on the poison bait storage surface of the poison bait storage container for controlling ants of the present invention and the poison bait storage container for comparison (Poison bait containers 1 to 4, comparative poison bait containers 1 and 2, respectively).

[Efficacy Testing]
Two circular plastic cups with a bottom diameter of 80 mm and a height of 40 mm were prepared by laying filter paper on the bottom surface, placing absorbent cotton on top of the filter paper, and then coating the inside of the plastic cups with Fluon to prevent ants from escaping. In each plastic cup, a container for storing poison bait for ant control according to the present invention or a comparative container for storing poison bait for ant control was placed, and 20 Argentine ants bred for successive generations at Sumitomo Chemical Co., Ltd. were released.
24 hours after the release of the Argentine ants, the number of dead Argentine ants in each plastic cup was counted.

The mortality rate was calculated using the following formula:
Mortality rate (%) = Number of dead insects/20 x 100

The above efficacy test was repeated twice and the average mortality rate is shown in the table.

[table]

As explained above, the poison bait container for ants of the present invention is suitable for attracting and controlling ants.

10 Lower cover 11 Protrusion 12 Poison bait storage surface 20 Upper cover 20b Flat surface 20c Inclined surface 20d End surface 31-34 Connecting portions 41-44 Protruding portions 60, 61 Connecting pieces

Claims (1)

A lower lid provided with an ant poison bait storage section;
An ant poison bait storage container having an upper lid arranged opposite the lower lid,
The ant poison bait storage container is characterized in that the top lid contains 0.005 to 0.05% by weight of carbon black.

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