KR20250072402A - airtightness cap for the agricultural chemical bottle having multi-layered - Google Patents

Abstract

The present invention comprises a multilayer structure of an outer barrel made of polyester (PE) and an inner barrel made of ethylene vinyl alcohol (EVOH) copolymer, and a sealing cap made of ethylene vinyl alcohol (EVOH), which is the same material as the inner barrel of the pesticide bottle, is provided on the inner side of the bottle cap blocking the upper part of the pesticide bottle, so that when the bottle cap is closed by screwing, the sealing cap is pressed against the upper part of the pesticide bottle and is sealed, thereby forming a seal between the pesticide bottle and the bottle cap. In addition, since the inner barrel material of the pesticide bottle and the sealing cap are made of the same ethylene vinyl alcohol (EVOH) copolymer, when the sealing cap is pressed against the upper part of the pesticide bottle and is sealed, not only is the sealing cap not crushed when pressed, but the upper part of the inner barrel and the sealing cap are also tightly sealed. Therefore, not only is the sealing between the pesticide bottle and the bottle cap greatly improved, but also, when the bottle cap is screwed onto the top of the pesticide bottle, the sealing cap-prevention protrusion provided on the bottle cap strongly adheres to the inner surface of the sealing cap and presses the sealing cap, so that even if a strong pressing pressure is applied to the sealing cap when the bottle cap is screwed on, the central part of the sealing cap is pushed, preventing the inner surface of the sealing cap from becoming distorted and a gap from forming. A multi-layered sealing cap for pesticide bottles is disclosed.

Description

{airtightness cap for the agricultural chemical bottle having multi-layered}

The present invention relates to a sealed cap for a pesticide bottle having a multilayer structure, and more specifically, to a sealed cap for a pesticide bottle having a multilayer structure including an outer tube made of polyester (PE), an inner tube made of ethylene vinyl alcohol (EVOH) copolymer, and an adhesive portion that adhesively fixes the outer tube and the inner tube, which is provided on the inside of a bottle cap fastened to the top of a pesticide bottle and seals the pesticide bottle and the bottle cap so as to form an airtight seal, thereby preventing the pesticide contained in the pesticide bottle from evaporating or the pesticide odor from escaping.

In general, liquid or powdered substances cannot be stored on their own, so they are stored in separate storage containers. Plastic containers are mainly used as storage containers for this purpose.

These containers have a spout on one side for putting in and taking out the contents inside, and the spout is structured to be opened and closed by a lid for safe storage of the contents.

Additionally, the lid is usually made of one body and is screwed onto the spout of the container for easy opening and closing, so that the container can be opened by turning the lid counterclockwise.

However, in the case of pesticide bottles containing pesticides harmful to the human body, they are equipped with a multi-layer structure of an outer tube made of polyester (PE) material and an inner tube made of ethylene vinyl alcohol (EVOH) material. The reason for having a multi-layer pesticide bottle like this is that the ethylene vinyl alcohol (EVOH) material blocks gases and vapors to prevent oxidation of the contents, prevents the pesticide quality from deteriorating due to chemical resistance, and is resistant to impact.

That is, since the pesticides contained in pesticide bottles are made up of chemicals that are extremely harmful to the human body, they must be stored with special care. Accordingly, in order to prevent the pesticides contained in pesticide bottles from being oxidized, the containers from being deteriorated by pesticides made up of strong chemicals, or the pesticide quality from being deteriorated, the inner part of the pesticide bottles is made of ethylene vinyl alcohol (EVOH) material.

In addition, the bottle cap that is screwed onto the top of the pesticide bottle to open and close the top of the pesticide bottle containing the pesticide is used by separating the bottle cap when dispensing the pesticide from the pesticide bottle and closing the bottle cap when storing the pesticide.

However, in the case of conventional pesticide bottles, while pesticide evaporation through the inner barrel can be prevented by the outer barrel provided on the outside of the inner barrel, there is a problem in that even if the bottle cap is closed by screwing it onto the top of the pesticide bottle, a gap is created between the bottle cap and the pesticide bottle, and pesticide contained in the pesticide bottle easily evaporates through the gap created.

In addition, there is a problem that it causes respiratory diseases in workers or sellers because the pesticide odor that is harmful to the human body is released when the pesticide evaporates.

Of course, to prevent this, an inner stopper is installed at the top of the pesticide bottle to prevent a gap from forming between the bottle cap and the top of the pesticide bottle when the bottle cap is screwed onto the pesticide bottle to close the top of the pesticide bottle. However, since the inner stopper installed on the conventional pesticide bottle is made of polyester (PE, polyester), there is a problem that the gap-blocking effect between the bottle cap and the top of the pesticide bottle gradually decreases as the inner stopper deteriorates due to the pesticide containing strong chemicals in the process of repeatedly using and storing the pesticide contained in the pesticide bottle.

In addition, in the case of inner stoppers made of polyester (PE), the chemical resistance is significantly low, and the sealing with the inner tube of the pesticide bottle made of ethylene vinyl alcohol (EVOH) copolymer is low, so it is not possible to completely seal the top of the pesticide bottle, which has a multilayer structure of the outer tube and the inner tube.

Looking into the prior art, a sealed structure of a bottle cap, registered in Utility Model No. 20-0142703, has been devised, wherein the bottle cap is composed of an upper portion and a side portion, and a tamper-evident member having a catch as a connecting portion at the lower portion is provided, and a screw line is formed on the inner wall surface of the side portion in a conventional bottle cap, and a stopper is formed on the lower surface of the upper portion, and the stopper is formed as a spaced-out groove with a circular protrusion on the inner wall surface, so that when the upper end of the container is fitted, the circular protrusion is pushed toward the spaced-out groove, so that the upper end of the container and the bottle cap are strongly pressed against each other to form a sealed seal.

However, since the bottle neck is inserted into the inside of the protrusion and becomes tightly attached when the bottle neck is fitted into the bottle cap, it is not easy to separate the bottle cap again after it has been fitted once, and it is somewhat difficult to apply it to pesticide bottles containing pesticides, which are chemicals harmful to the human body.

As another example, a pesticide container under Registration No. 20-0307480 has been developed, which is a pesticide container having a hook portion that is joined as one body by a micro-connector at the center of the lower part of the body and a hole formed at the center side and folded and fixed to an insertion groove formed at one side of the lower part of the body, the pesticide container comprising a container body having an insertion groove formed as a narrow groove at one side of the upper part of the body, a nozzle that is fitted into the insertion groove of the container body, and a lid having a joining hole formed at the center of the upper part and a sealing paper that is tightly fixed to the bottom surface of the joining hole to seal the joining hole.

However, these conventional technologies are intended to appropriately control the amount of pesticide sprayed into the water inlet port and smoothly flow in, rather than the sealed structure between the pesticide bottle and the cap, and thus cannot solve at all the problems caused by the gap between the pesticide bottle and the cap mentioned above.

Patent Document 1: Republic of Korea Utility Model Registration No. 20-0142703 (Registered on January 16, 1999) Patent Document 2: Republic of Korea Utility Model Registration No. 20-0307480 (registered on March 4, 2003)

The purpose of the present invention is to provide a sealed cap for a pesticide bottle having a multilayer structure in which an outer tube made of polyester (PE) and an inner tube made of ethylene vinyl alcohol (EVOH) completely seals the space between the pesticide bottle and the bottle cap screwed on the top of the pesticide bottle, thereby preventing the pesticide contained in the pesticide bottle from leaking or evaporating or the odor of the pesticide from leaking out, and preventing outside air from entering the interior of the pesticide bottle through the gap between the pesticide bottle and the bottle cap, and preventing the sealing between the pesticide bottle and the bottle cap from deteriorating or falling even when repeatedly used while attaching the bottle cap to the pesticide bottle or detaching the bottle cap from the pesticide bottle.

In order to achieve the above object, the present invention provides a multilayered pesticide bottle sealing cap, which comprises an outer tube made of polyester (PE), an inner tube provided on the inside of the outer tube and made of ethylene vinyl alcohol copolymer (EVOH), and an adhesive portion that adheres and fixes the outer tube and the inner tube, wherein the sealing cap is positioned between the upper part of the pesticide bottle and a bottle cap screw-fastened to the upper part of the pesticide bottle, so as to prevent the pesticide contained in the pesticide bottle from leaking out through the gap between the upper part of the pesticide bottle and evaporating, and to prevent the pesticide odor harmful to the human body from leaking out, wherein the sealing cap is positioned on the inside of the bottle cap and the upper part of the pesticide bottle and is screw-fastened to the upper part of the pesticide bottle, thereby closely contacting the upper part of the pesticide bottle, and the material of the sealing cap is the same material as the material of the inner tube, ethylene vinyl alcohol copolymer (EVOH, It is made of ethylene vinyl alcohol (ethylene vinyl alcohol).

Furthermore, the sealing cap is fixed by being bonded to the inner upper part of the bottle cap by an adhesive or by high-frequency welding, and is sealed by covering both the upper surface of the outer barrel and the upper surface of the inner barrel located at the upper part of the pesticide bottle to prevent evaporation of the pesticide and leakage of the pesticide odor, and a sealing reinforcing flange made of an ethylene vinyl alcohol (EVOH) copolymer material is further extended in the outer direction of the upper part of the sealing cap.

Furthermore, when screwing the bottle cap onto the top of the pesticide bottle, a sealing cap sliding prevention protrusion is provided that extends downward from the inner top of the bottle cap and closely supports the inner surface of the sealing cap to prevent the pesticide from evaporating and the pesticide odor from leaking out due to the sealing cap made of the ethylene vinyl alcohol (EVOH) copolymer being pushed inward.

In addition, the sealing cap sliding prevention protrusion is provided with a catch portion that extends toward the inner side of the sealing cap, and the inner side of the sealing cap is provided with a catch groove portion that catches and is fixed by the catch portion.

The present invention comprises a bottle cap having a multilayer structure including an outer tube made of polyester (PE) and an inner tube made of ethylene vinyl alcohol (EVOH) copolymer, which is provided on the inside of the outer tube and is provided on the top of the pesticide bottle, and a sealing cap made of ethylene vinyl alcohol (EVOH) copolymer, which is the same material as the inner tube of the pesticide bottle, is provided on the inside of the bottle cap for blocking the top of the pesticide bottle, so that when the bottle cap is closed by screwing it on, the sealing cap is pressed against the top of the pesticide bottle and seals the pesticide bottle and the bottle cap.

In addition, since the inner material of the pesticide bottle and the sealing cap are made of the same ethylene vinyl alcohol copolymer (EVOH), when the sealing cap is pressed and adhered to the top of the pesticide bottle, not only is the sealing cap not distorted when pressed, but the top of the inner part and the sealing cap can be adhered closely, so the sealing between the pesticide bottle and the bottle cap is greatly improved.

In addition, when the bottle cap is screwed onto the top of the pesticide bottle, the sealing cap-prevention protrusion provided on the bottle cap presses the sealing cap while making strong contact with the inner surface of the sealing cap, so even if a strong pressing pressure is applied to the sealing cap when the bottle cap is screwed on, the center of the sealing cap is pushed, preventing the inner surface of the sealing cap from becoming distorted and creating a gap.

Figure 1 is a perspective view showing an example of a pesticide bottle to which a pesticide bottle sealing cap having a multilayer structure according to the present invention is applied.
Figure 2 is an exploded perspective view showing the components of a pesticide bottle sealing cap having a multilayer structure according to the present invention.
Figure 3 is a diagram showing the components of a sealed cap for a pesticide bottle having a multilayer structure according to the present invention.

Hereinafter, other purposes and features of the present invention in addition to the above will be clearly revealed through a description of embodiments with reference to the attached drawings.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms defined in commonly used dictionaries, such as those defined in common dictionaries, should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

Hereinafter, a sealing cap for a pesticide bottle having a multilayer structure according to an embodiment of the present invention will be described in more detail with reference to the attached drawings.

As described above, the present invention relates to a sealing cap (30) positioned between the upper end of an agricultural chemical bottle (10) and a bottle cap (20) screw-fastened to the upper end of the agricultural chemical bottle (10), which comprises a multilayer structure of an outer barrel (11) made of polyester (PE), an inner barrel (12) provided on the inside of the outer barrel (11) and made of ethylene vinyl alcohol (EVOH) copolymer, and an adhesive portion (13) that adhesively fixes the outer barrel (11) and the inner barrel (12).

The present invention enables the sealing of the pesticide bottle (10) and the bottle cap (20) by pressing and sealing the top of the pesticide bottle (10) when the bottle cap (20) is screwed shut, thereby preventing the pesticide contained in the pesticide bottle (10) from evaporating, the pesticide odor from escaping, or the quality of the pesticide from deteriorating.

To this end, the sealing cap (30) of the present invention is positioned on the inside of the bottle cap (20) and the top of the pesticide bottle (10), and is tightly attached to the top of the pesticide bottle (10) by screwing the bottle cap (20) to the top of the pesticide bottle (10).

In addition, the material of the sealing cap (30) is made of ethylene vinyl alcohol copolymer (EVOH), which is the same material as the material of the inner tube (12).

Of course, the sealing cap (30) may be bonded to the inner upper part of the bottle cap (20) by an adhesive or fixed by high-frequency welding so that when the bottle cap (20) is separated from the upper part of the pesticide bottle (10), the sealing cap (30) is separated together, thereby greatly improving usability.

The present invention, which is made in this way, can prevent pesticides contained in pesticide bottles (10) from leaking out and evaporating through the gap between the top of the pesticide bottle (10) and the bottle cap (20), and can prevent pesticide odors harmful to the human body from leaking out.

The reason why the material of the above-mentioned sealing cap (30) is made of ethylene vinyl alcohol copolymer (EVOH), which is the same as the material of the inner barrel (12) of the pesticide bottle (10), is to prevent the pesticide contained in the pesticide bottle (10) from evaporating or leaking out through the sealing cap (30) due to the material characteristic of ethylene vinyl alcohol copolymer (EVOH), which blocks gas and vapor and prevents oxidation of the contents.

In addition, since the sealing cap (30) is strongly pressed by the bottle cap (20) during the process of screwing the bottle cap (20) onto the pesticide bottle (10) and is pressed against the top of the pesticide bottle (10), no gap is created between the bottle cap (20) and the top of the pesticide bottle (10), and thus the pesticide contained in the pesticide bottle (10) can be reliably prevented from evaporating or the odor of the pesticide from escaping.

In order to more reliably prevent pesticides contained in pesticide bottles (10) from evaporating and pesticide odors from leaking out, the upper surface (11a) of the outer barrel (11) and the upper surface (12a) of the inner barrel (12) located at the upper end of the pesticide bottle (10) are both covered and sealed, and a sealing reinforcing flange (31) made of ethylene vinyl alcohol (EVOH) copolymer material is further extended in the upper outer direction of the sealing cap (30).

The above-mentioned sealing reinforcement flange (31) is integrally extended with the sealing cap (30) in the upper outer direction of the sealing cap (30), and since the material of the sealing reinforcement flange (31) is also made of ethylene vinyl alcohol copolymer (EVOH) which is the same as the material of the sealing cap (30), the adhesion with the upper surface (12a) of the inner tube (12) covered by the sealing reinforcement flange (31) can be further improved, thereby preventing the pesticide contained in the pesticide bottle (10) from evaporating or the pesticide odor from leaking out through the bottle cap (20) and the upper end of the pesticide bottle (10) as well as the sealing cap (30).

In addition, the present invention is provided with a sealing cap sliding prevention protrusion (33) that extends downward from the inner upper portion of the bottle cap (20) and closely supports the inner surface (32) of the sealing cap (30).

Accordingly, when the bottle cap (20) is screwed onto the top of the pesticide bottle (10), the sealing cap (30) made of ethylene vinyl alcohol (EVOH) material is pushed inward, thereby creating a gap, thereby preventing the pesticide from evaporating and the pesticide odor from escaping.

That is, when the bottle cap (20) is screwed onto the top of the pesticide bottle (10), the inner surface (32) of the sealing cap (30) is pushed toward the center of the sealing cap (30) by the strong pressure applied by the bottle cap (20) in the process of the sealing cap (30) being pressed and pressed against the top of the pesticide bottle (10). Therefore, the sealing cap sliding prevention protrusion (33) extending downwardly on the inside of the bottle cap (20) is positioned toward the inside of the sealing cap (20), and when the bottle cap (20) is screwed onto the top of the pesticide bottle (10), it is drawn into the inside of the sealing cap (20) and tightly supports the inner surface (32) of the sealing cap (30). As a result, the sealing cap (30) can be prevented from being pushed inward, thereby preventing the pesticide from evaporating and the pesticide odor from escaping due to the gap being created when the sealing cap (30) is pushed inward.

The sealing cap sliding prevention projection (33) of the present invention is provided with a catch (34) that extends and protrudes toward the inner surface of the sealing cap (30), and the inner surface (32) of the sealing cap (30) is provided with a catch groove (35) that catches and is fixed by the catch (34).

The present invention, which is made in this way, when the bottle cap (20) is screwed onto the top of the pesticide bottle (10), the inner surface (32) of the sealing cap (30) is closely supported while being drawn into the inside of the sealing cap (20), and when the bottle cap (20) is completely screwed onto the top of the pesticide bottle (10), the engaging portion (34) of the sealing cap sliding prevention projection (33) is caught in the engaging groove (35) provided on the inner surface (32) of the sealing cap (30) and fixed, thereby more reliably preventing the sealing cap (20) from sliding.

In addition, when the bottle cap (20) is opened from the top of the pesticide bottle (10), the sealing cap (30) can be separated from the pesticide bottle (10) together with the bottle cap (20), so that the bottle cap (20) and the sealing cap (30) do not have to be separated separately in order to open the top of the pesticide bottle (10) and discharge the pesticide, and thus the usability and convenience of the pesticide contained in the pesticide bottle (10) are greatly improved.

Although the present invention has been described with specific details such as specific components and limited examples and drawings, these have been provided only to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and those with common knowledge in the technical field to which the present invention pertains can make various modifications and variations from this description.

Therefore, the idea of the present invention should not be limited to the described embodiments, and all things that are equivalent or equivalent to the claims described below as well as the same shall fall within the scope of the idea of the present invention.

10: pesticide bottle 11: external tube
11a: Top surface of outer tube 12: Inner tube
12a: Top surface of inner tube 13: Adhesive
20 : Bottle cap
30: Sealing cap 31: Sealing reinforcement flange
32: Sealing cap inner surface 33: Sealing cap anti-slip protrusion
34: Hook 35: Hook home

Claims (4)

In a sealing cap (30) positioned between the top of an agricultural chemical bottle (10) and a bottle cap (20) screw-fastened to the top of the agricultural chemical bottle (10), which is made of a multilayer structure of an outer tube (11) made of polyester (PE), an inner tube (12) provided on the inside of the outer tube (11) and made of ethylene vinyl alcohol (EVOH) copolymer, and an adhesive (13) that adhesively fixes the outer tube (11) and the inner tube (12),
To prevent the pesticide contained in the pesticide bottle (10) from leaking out and evaporating through the gap between the top of the pesticide bottle (10) and the bottle cap (20), and to prevent the pesticide odor harmful to the human body from leaking out,
The above sealing cap (30) is
The bottle cap (20) is positioned on the inside of the bottle cap (20) and the top of the pesticide bottle (10), and is secured by screwing the bottle cap (20) to the top of the pesticide bottle (10), thereby coming into close contact with the top of the pesticide bottle (10).
The material of the above sealing cap (30) is made of ethylene vinyl alcohol copolymer (EVOH), which is the same material as the material of the inner tube (12).
In the first paragraph,
The above sealing cap (30) is fixed by bonding with an adhesive or by high-frequency welding to the inner upper part of the bottle cap (20).
To prevent evaporation of pesticides and leakage of pesticide odor,
The upper surface (11a) of the outer tube (11) and the upper surface (12a) of the inner tube (12) located at the upper end of the pesticide bottle (10) are both covered and sealed, and a sealing reinforcing flange (31) made of ethylene vinyl alcohol (EVOH) material is further extended in the upper outer direction of the sealing cap (30).
In the first paragraph,
When screwing the bottle cap (20) onto the top of the pesticide bottle (10), the sealing cap (30) made of ethylene vinyl alcohol (EVOH) material is pushed inward, thereby creating a gap and preventing the pesticide from evaporating and the pesticide odor from escaping.
A sealing cap sliding prevention protrusion (33) is provided that extends downward from the inner upper portion of the bottle cap (20) and closely supports the inner surface (32) of the sealing cap (30).
In the third paragraph,
The above sealing cap sliding prevention protrusion (33) is provided with a catch (34) that extends to the inner side of the sealing cap (30).
The inner surface (32) of the above-mentioned sealing cap (30) is provided with a hooking groove (35) that is hooked and fixed to the hooking portion (34).