JP2003081369A - Corrosion-resistant two-chamber aerosol vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corrosion-resistant two-chamber aerosol vessel with an inner cylinder and a conduit integrated with each other. SOLUTION: In the corrosion-resistant two-chamber aerosol vessel in which a first agent is filled in a vessel body 1, a second agent is filled in the inner cylinder 3, and the first and second agents are mixed and sprayed, the conduit 4 is fixed to a side surface of the inner cylinder 3, and a synthetic resin inner bag 2 to prevent corrosion by the first agent is fitted to an inner surface of the vessel body in a tightly-fitting condition to the vessel body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrosion-resistant two-chamber aerosol container, and more particularly to a corrosion-resistant two-chamber aerosol in which an inner cylinder and a conduit are integrated, a filling volume is large, and corrosion by the filling is prevented. Regarding the container.

[0002]

2. Description of the Related Art A conventional two-chamber aerosol container is disclosed in Japanese Patent Publication No. 58-30282 as shown in FIG. In the figure, reference numeral 50 denotes a metal container body, and the container body 50 is filled with one agent containing a dye as a main component. On the other hand, an inner cylinder 52 and a conduit 53 are connected to the injection valve 51, and the inner cylinder 52 and the conduit 53 are connected to the container body 5.
0 and is suspended in the container body 50,
The injection valve 51 is clinched and fixed to the opening of the container body 50. The inner cylinder 52 is filled with two agents containing an oxidizing agent as a main component, and the first agent and the second agent separately filled in such two chambers are simultaneously injected into the injection valve 51.
It is guided inside, is extruded into the stem 54, and is jetted out from the nozzle 55 while being mixed.

[0003]

However, such a conventional two-chamber aerosol container has the following drawbacks. (1) Since the inner cylinder 52 connected to the injection valve 51 and the conduit 53 are separately separated, during insertion work into the container body 50, the long conduit is inserted into the opening of the container body. It was difficult to insert because it was caught by the mouth. (2) Conventionally, a coating agent such as a polyolefin-based, polyamide-based, epoxyphenol-based, or epoxyurea-based coating agent is spray-coated on the inner surface of the container body 50 shown in FIG. 8 to prevent corrosion by one agent. However, since there are coating spots and pinholes, there is a drawback that one agent penetrates from that portion and corrodes the container body 50. (3) Since the material of the inner cylinder 52 shown in FIG. 8 is a single-layer resin material such as polyethylene, polypropylene, or vinyl chloride, the two agents filled in the inner cylinder 52 are oxidizers such as hydrogen peroxide. In the case of the content containing, oxygen has a drawback that oxygen generated by decomposition with time passes through the inner cylinder 52 and mixes into one agent on the outside, and the dye is already oxidized before being injected to the outside. There was a problem of doing.

The present invention has been made in view of such a conventional problem, and has a sufficient volume for facilitating the work of inserting the inner cylinder and the conduit into the container body and storing one agent. In addition, while preventing corrosion of the inner surface of the container body,
An object of the present invention is to provide a corrosion-resistant two-chamber aerosol container in which mixing of one agent and two agents before use is prevented.

[0005]

In order to solve this problem, the solution means corresponding to the invention of claim 1 is to fill one agent in the container body and two agents in the inner cylinder. In an aerosol container in which one agent and two agents are mixed and injected, a conduit is fixed to a side surface of an inner cylinder, and a synthetic resin inner bag for preventing corrosion due to one agent is provided on an inner surface of a container body. A corrosion-resistant two-chamber aerosol container, which is mounted in close contact with the container body.

According to a second aspect of the invention, there is provided a corrosion-resistant two-chamber aerosol container characterized in that a recess having an inner diameter corresponding to the outer diameter of the conduit is formed on the side surface of the inner cylinder. .

According to a third aspect of the present invention, there is provided a corrosion-resistant two-chamber chamber characterized in that the inner cylinder is composed of an inner layer and an outer layer of a polyolefin resin, and the intermediate layer is composed of a gas barrier resin and an adhesive layer. It is an aerosol container.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described with reference to the drawings. 1 to 6 are drawings showing a first embodiment according to the present invention. 1 is aluminum,
The container body is made of a metal material such as steel. Inside the container body 1, an inner cylinder 3 connected to an injection valve 5 and a conduit 4 are suspended. Then, as shown in FIG. 5 and FIG. 6, the conduit 4 is in close contact with the recess 3a formed on the side surface of the body of the inner cylinder 3 so that the conduit 4 is in contact with approximately half the circumference. When the inner cylinder 3 and the conduit 4 are connected to the injection valve 5 in this close contact state, the recess 3a of the inner cylinder 3 and the conduit 4 are
It is inseparably integrated and suspended in the container body 1.

As shown in FIG. 4, the material of the inner cylinder 3 is composed of a polyethylene resin 3a, an adhesive layer 3b, and a gas barrier resin 3c such as saponified ethylene-vinyl acetate copolymer or nylon. The adhesive layer 3b and the innermost layer have a multilayer structure of polyethylene resin 3a (see FIG. 4, which is an enlarged cross-sectional view taken along the arrow A in FIG. 3).

An inner bag 2 is mounted inside the container body 1 in close contact with the inner surface of the container body 1. Due to this adhesion, the filling volume of one agent can be sufficiently secured. The material forming the inner bag 2 is a polyolefin-based material,
Polyamide-based resin materials are suitable. One agent is composed of oxidative dye, alkali agent, surfactant and solvent.
A propellant such as dimethyl ether is mixed with the agent. The two agents are hydrogen peroxide solution and a stabilizer. In addition to the hair dye, the corrosion-resistant two-chamber aerosol container according to the present invention may be filled with shaving, a cosmetic such as a face pack, which is used by mixing one agent and two agents at the time of use, an adhesive agent, and the like. . FIG. 7 is a cross-sectional view showing a second embodiment in which the inner cylinder 13 and the conduit 14 are suspended via the injection valve 15 in the container body 11 of the small aerosol container. It has the same function as that of the first embodiment.

Next, the operation of the present invention will be described.
When using the hair dye, when the push button on the upper part of the injection nozzle 5a is pressed to open the injection valve 5, as shown in FIG. As described above, the two agents in the inner cylinder 3 are similarly guided into the injection valve 5 while being guided into the injection valve 5. Then, the first agent and the second agent are mixed in the housing of the injection valve 5, and the mixture is injected from the injection nozzle 5a in a foam state. At this time, one dye is oxidized by the two oxidizing agents to develop a color.

When the inner cylinder 3 and the conduit 4 are inserted into the container body 1 according to the present invention, since the inner cylinder 3 and the conduit 4 are integrated, the insertion work can be performed smoothly. Further, it is possible to completely prevent the corrosion of the inner peripheral surface of the container body 1 due to one agent, and to secure a sufficient filling volume for one agent. Furthermore, since the inner cylinder 3 is composed of multiple layers having a gas barrier resin, it is possible to completely prevent the one agent and the two agents from mixing in the container body 1 before injection.

[0013]

As described above, according to the present invention, the insertion work of the inner cylinder and the conduit can be facilitated, the container body can be prevented from being corroded, and a sufficient storage volume for one agent can be secured. Furthermore, it has the effect of completely preventing mixing of the first and second agents before use.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a first embodiment of a corrosion-resistant two-chamber aerosol container according to the present invention.

FIG. 2 is an exploded cross-sectional view showing a first embodiment of a corrosion-resistant two-chamber aerosol container according to the present invention.

FIG. 3 is a partially enlarged sectional view showing a first embodiment of a corrosion resistant two-chamber aerosol container according to the present invention.

FIG. 4 is an enlarged cross-sectional view of an arrow A portion of FIG.

FIG. 5 is a front sectional view in which an inner cylinder and a conduit are integrated.

6 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 7 is a front sectional view showing a second embodiment of the corrosion resistant two-chamber aerosol container according to the present invention.

FIG. 8 is a front sectional view showing a conventional two-chamber aerosol container.

[Explanation of symbols]

1 11 Container body 2 inner bag 3 13 inner cylinder 3a Polyolefin resin 3b adhesive layer 3c Gas barrier resin 4 14 conduit

Claims (3)

[Claims] 1. An aerosol container in which a container body is filled with one agent and an inner cylinder is filled with two agents, and the one agent and the two agents are mixed and injected, and a side surface of the inner tube is provided. The conduit is fixed, and the inside of the container body is provided with the above-mentioned 1
Corrosion resistance characterized by a synthetic resin inner bag attached to the container body in close contact with it to prevent corrosion due to chemicals 2
Room aerosol container. 2. A recess having an inner diameter corresponding to the outer diameter of the conduit is formed on the side surface of the inner cylinder.
Corrosion-resistant two-chamber aerosol container described. 3. The corrosion-resistant two-chamber aerosol container according to claim 1, wherein the inner cylinder is composed of a polyolefin-based resin for the inner layer and the outer layer, and a multi-layer including a gas barrier resin and an adhesive layer for the intermediate layer.