JP2003300570A - Double aerosol container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double aerosol container, which separately holds an undiluted solution and a compressed gas for jetting the undiluted solution in a sealed state, and jets the undiluted solution together with the compressed gas with mixing the solution and gas to be jetted in a foaming state. <P>SOLUTION: The double aerosol container 1 comprises an inner bag 2 filled with the undiluted solution A, an outer container 3 arranged outside the inner bag 2 to form a space S filled with the compressed gas B between the outer container and the inner bag, and a valve mechanism 10 for jetting both undiluted solution A contained in the inner bag 2 and the compressed gas B by the pressure of the compressed gas B to make the mixture of the undiluted solution A and the compressed gas B jet in a foaming state. A hair-dyeing agent, which is the undiluted solution A, is filled into the aerosol container, and the space S is filled with the compressed gas B to jet the hair-dyeing agent. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double aerosol container composed of an inner bag and an outer container, wherein the compressed gas filled in the space between the inner bag and the outer container is filled in the inner bag. The present invention relates to a double aerosol container that ejects together with a stock solution and discharges the stock solution into a foam.

[0002]

2. Description of the Related Art Foamed hair dyes have hitherto been used from the viewpoint of handling property that liquid dripping does not easily occur, it is thin, and it is easy to apply evenly.

As a foam hair dye discharger, a hand former or a squeeze container in which a liquid hair dye is contained in a normal pressure container and a discharge mechanism equipped with a mesh discharges the liquid hair dye by a pump mechanism. There is one in which a liquid hair dye is discharged from a discharge nozzle provided with a mesh. There is also a pressure-resistant container which uses an aerosol container for filling and spraying a liquid hair dye together with a propellant such as LPG and nitrogen gas.

[0004]

However, in the case of the conventional foaming hair dye discharger using the atmospheric pressure container, the agent unstable to air cannot be stored for a long period of time. There is a problem that it cannot be used for hair dyes using oxidation type dyes.

On the other hand, there is a limit to the combination of the propellant and the liquid hair dye in the foam hair dye ejector using the aerosol container.

On the other hand, the present invention solves the problem of the storability of the agent when using the atmospheric pressure container and the limitation of the combination of the propellant and the liquid hair dye when using the aerosol container. For example, an object of the present invention is to provide a new aerosol container in which a liquid hair dye containing an air-oxidizing dye is discharged with compressed air to form a foam, and the storage stability of the hair dye is not impaired. And

[0007]

Means for Solving the Problems The present inventor fills an inner bag of a double container composed of an inner bag and an outer container with a stock solution, and fills a space between the inner bag and the outer container with a compressed gas, If compressed gas is ejected at the same time as the undiluted solution, the undiluted solution can be foamed by the compressed gas ejected at the same time as the undiluted solution, and the undiluted solution and the compressed gas are stored in a separate state, so that the undiluted solution is stable in storage. Property is not impaired by compressed gas,
Therefore, it has been found that the above object can be achieved by filling the inner bag of such a double container with a liquid hair dye as a stock solution.

That is, the present invention is an inner bag filled with a stock solution,
An outer container provided outside the inner bag and filled with a compressed gas in the space between the inner bag and the undiluted solution filled in the inner bag by the pressure of the compressed gas. There is provided a double aerosol container provided with a valve mechanism for mixing and discharging the mixture in the form of foam.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings. In each drawing, the same reference numerals represent the same or equivalent constituent elements.

FIG. 2 is a schematic cross-sectional view of a double aerosol container 1 according to an embodiment of the present invention. FIG. 1 is a cross-sectional view for explaining the valve mechanism thereof. The state where the stem is not pushed, the same figure (B) shows the state where the stem is pushed.

The aerosol container 1 includes an inner bag 2 filled with the stock solution A, an outer container 3 provided outside the inner bag 2, and a valve mechanism 10.

The outer container 3 is formed of a metal material or the like, and an arbitrary compressed gas B such as air, oxygen gas, nitrogen gas, carbon dioxide gas or argon gas is provided between the outer container 3 and the inner bag 2. Is filled. The filling pressure of the compressed gas B is preferably 0.3 to 1.0 MPa from the viewpoint of stably ejecting the stock solution until the end.

The inner bag 2 is soft and flexible, and is made of a synthetic resin or the like which is substantially impermeable to at least the component of the compressed gas B which should not be mixed with the stock solution A during storage.

The valve mechanism 10 includes a housing 11, and a stem 20 and a stem 2 that move up and down in the housing 11.
Actuator 12 and stem 1 provided at the upper end of 0
A spring 13 installed between the lower end of 2 and the housing 11 for urging the stem 20 pushed into the container to the outside.
It consists of

Inside the stem 20, an internal piece 23 for partitioning the liquid flow path 21 on the inner side of the container and the gas-liquid mixing flow path 22 on the outside thereof is fixed. The internal piece 23 and the stem 20 are fixed to each other.
As shown in FIG. 1B, when the stem 20 is pushed into the container, the space S between the outer container 3 and the inner bag 2 and the gas-liquid mixing flow path in the stem 20 are formed on the peripheral wall of the stem. A vent hole 24 is provided for communicating with 22. Further, when the stem 20 is pushed into the container as shown in the figure, the liquid flow path 2 inside the inner bag 2 and inside the stem 20 is attached to the peripheral wall of the stem 20.
1 is provided with a liquid passage hole 25. Vent holes 24 and liquid passage holes 25 provided in the peripheral wall of the stem 20.
1A, the stem 20 is closed by the wall surface of the housing 11 when the stem 20 is not pushed into the container, and the space S between the outer container 3 and the inner bag 2 is
The inside of the inner bag 2 is independently sealed.

The double aerosol container 1 operates as follows. First, when the stem is not pushed in as shown in FIG. 1 (A), the stock solution A filled in the inner bag 2
And the compressed gas B filled in the space S between the outer container 3 and the inner bag 2 are hermetically stored. Therefore, the mixing of the undiluted solution A and the compressed gas B does not cause a problem that the preservability of the undiluted solution A deteriorates.

On the other hand, when the actuator 12 is pushed down and the stem 20 is pushed into the container, the inside of the inner bag 2 and the liquid flow path 21 in the stem 20 communicate with each other through the liquid passage holes 25.
Due to the pressure of the compressed gas B, the undiluted solution A filled in the inner bag 2 passes through the liquid passage hole 25 and the liquid flow path 21, and the gas-liquid mixing flow path 2
Erupt to 2. Further, at this time, the space S between the outer container 3 and the inner bag 2 and the gas-liquid mixing flow passage 22 in the stem 20 communicate with each other through the vent hole 24, and the compressed gas B has the gas-liquid mixing flow passage 22.
Gush out to. Therefore, in the gas-liquid mixing channel 22, the stock solution
And the compressed gas B are mixed, and the mixture is discharged from the discharge port 14 of the actuator 12 in the form of bubbles.

The use of this double aerosol container 1 is not particularly limited, and can be widely used for discharging a foamy substance in which the stock solution A and the compressed gas B are mixed. In particular, it is not possible to mix and store the undiluted solution A and the compressed gas B because they react with each other, but it is suitable when it is desired to mix and discharge them during use,
As a specific example thereof, the inner bag 2 is filled with a liquid hair dye, the space S between the outer container 3 and the inner bag 2 is filled with compressed air, and the jetted liquid hair dye and compressed air form a foam. It can be used as a foamy hair dye discharger for discharging a hair dye.

When the double aerosol container of the present invention is used as a foam hair dye discharger, the liquid hair dye to be filled in the inner bag is automatically oxidized by air such as indoline derivative or indole derivative as a dye. Air-oxidation type dyes, enzymes having oxidizing ability and oxidation dye intermediates that are oxidatively polymerized by the enzyme, oxidation-type dyes such as toluenediamine, direct dyes, and non-oxidation-type dyes such as pyrogallol, individually or in combination. What is contained can be used. In particular, when a liquid hair dye containing an air-oxidizing dye is used and compressed air is used as a compressed gas to eject the hair dye in the form of foam, conventional LPG, nitrogen gas or other propellant is used. Compared with the case where the hair dye is discharged in the form of foam, the contact area between the air-oxidative dye and air can be increased, and thereby the dyeing power can be enhanced, which is preferable.

The content of the dye in the liquid hair dye depends on the type of the dye and the like. For example, in the case of an oxidation type dye,
0.01 to 5% by weight, particularly 0.1 to 4% by weight is preferable, and in the case of direct dyes, 0.001 to 5% by weight, especially 0.1.
01 to 4% by weight is preferable.

The liquid hair dye may contain a surfactant as a foam stabilizer or a leveling agent, and preferably a thickener as a viscosity modifier.

As the surfactant, polyoxyethylene alkyl ether such as polyoxyethylene oleyl ether and polyoxyethylene stearyl ether; polyoxyethylene alkyl such as polyoxyethylene nonyl phenyl ether and polyoxyethylene octyl phenyl ether. Phenyl ether; nonionic surfactants such as polyoxyethylene sorbitan fatty acid ester, fatty acid alkylolamide, and polyoxyethylene-sec-tetradecyl ether can be used. In addition to these, anionic, cationic and amphoteric surfactants can also be used. The content of the surfactant in the liquid hair dye depends on the type of the surfactant and the dye used, and for example, 0.01 to 5 in the case of a nonionic surfactant.
It can be wt%.

Examples of the thickener include hydroxyethyl cellulose, ethers of hydroxyethyl cellulose and glycidyl trimethyl ammonium chloride, cellulose derivatives such as methyl cellulose and carboxymethyl cellulose; natural gums such as xanthan gum and guar gum; polyvinylpyrrolidone, crosslinked polyacrylic acid or Its salt,
Examples thereof include polyacrylic acid or its salt, and synthetic polymers such as polyacrylamide. The content of the thickening agent in the liquid hair dye depends on the type of the thickening agent and the dye used, and, for example, in the case of xanthan gum, 0.01 to
It can be 5% by weight.

In addition, p may be added to the liquid hair dye as needed.
An H regulator, an antioxidant, a stabilizer, a buffer, a chelating agent, a solubilizing agent, an antiseptic, a perfume, a texture improving agent and the like can be added.

When the double aerosol container of the present invention is used for discharging a foam hair dye, the foam specific volume (volume of foam hair dye / weight of foam hair dye) is By appropriately setting the ratio of the diameter of the liquid passage hole 25, which is the ejection hole of the liquid hair dye, to the diameter of the ventilation hole 24, which is the ejection hole of the compressed gas, 1 to 5 can be obtained.
Widely adjustable to 0 mL / g.

If a comb-like material is connected to the discharge port of the double aerosol container of the present invention, it can be used as a coating tool.

[0027]

According to the double aerosol container of the present invention,
The stock solution and the compressed gas for ejecting the stock solution are separately sealed and stored, and the compressed gas is also ejected when the stock solution is ejected.
They can be mixed and discharged in the form of bubbles.

Therefore, the double aerosol container of the present invention is useful when the stock solution and the compressed gas cannot be mixed and stored.

In particular, when a liquid hair dye containing an air oxidation type dye is filled as the stock solution and compressed air is used as the compressed gas, the air oxidation type dye and the air are discharged in a foam state in which they are sufficiently mixed. Therefore, high dyeing power can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of a valve mechanism of an aerosol container of the present invention.

FIG. 2 is a schematic cross-sectional view of the aerosol container of the present invention.

[Explanation of symbols]

1 ... Double aerosol container, 2 ... Inner bag, 3 ... Outer container,
10 ... Valve mechanism, A ... Undiluted solution, B ... Compressed gas

Claims (3)

[Claims] 1. An inner bag filled with an undiluted solution, an outer container provided outside the inner bag and filled with a compressed gas in a space between the inner bag and the inner bag,
A double aerosol container provided with a valve mechanism for ejecting the undiluted solution filled in the inner bag by the pressure of the compressed gas and also ejecting the compressed gas, mixing the undiluted solution and the compressed gas, and ejecting them in the form of foam. 2. The double aerosol container according to claim 1, wherein the stock solution is a liquid hair dye and the compressed gas is compressed air. 3. The double aerosol container according to claim 2, wherein the liquid hair dye contains an air oxidation type dye.