JPH10236554A - Double aerosol container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cause no misuse of a double aerosol container by disposing a valve mechanism in an opening of the container, forming an inner bag in such a manner that a volume thereof can be reduced accompaning the decrease of contents, and having the inner bag made of a material which permits permeation of an ejection agent but permits no permeation of the contents. SOLUTION: A valve mechanism 3 is disposed in an opening 2 provided at an upper end of an outer container 1. In the valve mechanism 3, a stem 5 is vertically inserted in a slidable manner into a housing 4 disposed at a central portion of the opening 2. An upper face of the housing 4 is covered with a stem gasket 13 and a lid 14 made of metal, and the valve mechanism 3 is constituted by integrating the housing 4, the stem 5 and the stem gasket 13. A flange 15 is projected on an outer circumference of the housing 4 at its upper end, and an annular wall 16 is projected on an underface of the flange 15. An opening 18 of an inner bag 17 provided at its upper end is mounted on an outer circumference of the annular wall 16, and the inner bag 17 is connected to the valve mechanism 3. The inner bag 17 is formed so that its volume can be reduced, and is made of a material which permits permeation of an ejection agent but permits no permeation of the contents.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to hair products, cosmetics, deodorants and antiperspirants, other human products, insecticides, coating agents, cleaners, other household products, industrial products, automobile products, foods, etc. The present invention relates to a double aerosol container used by filling contents into an inner bag.

[0002]

2. Description of the Related Art Conventionally, there is an aerosol product in which a propellant and contents are mixed in one container.
On the other hand, there is an outer container in which an inner bag filled with contents is mounted inside an outer container, and the inner bag is formed so that the volume can be changed as the contents are reduced.

[0003] In the conventional example using the inner bag, the inner bag is filled with contents that are not preferably contacted with the propellant, the outer container is filled with the propellant, and the inner bag is filled with the pressure of the propellant. The contents are ejected by pressing. For example, the invention described in JP-B-49-34912, JP-A-62-2
No. 65212, JP-A-51-12991.
There is an invention described in Japanese Patent Application Publication No. 2 (JP-A) No. 2 (1994).

[0004]

In an aerosol product in which the inner bag is filled with the contents and the outer container is filled with the propellant, and the contact between the contents and the propellant is cut off, the propellant is mixed into the contents. Therefore, it is unsuitable for pulverizing the mist of the content into fine particles or for producing a foaming action.

[0005] In addition, aerosol products in which a propellant and contents are mixed in a single container and come into contact with each other are sprayed with a large amount of propellant only by improper use of the aerosol container such as tilting or inversion. Misuse that makes it impossible to inject the contents is likely to occur.

In order to solve the problems as described above, the present invention can mix and contact a propellant and a content, pulverize a mist of the content into fine particles, or generate a foaming action. The present invention is intended to prevent misuse even if the aerosol container is tilted or inverted, etc., while making it possible according to the purpose.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a valve mechanism is arranged at an opening of an outer container, and an inner bag having an upper end connected to the valve mechanism is used to form an inner bag. The inner bag is formed of a material that allows the propellant to permeate but does not allow the contents to pass through, while allowing the volume to be changed as the volume decreases.

[0008] The propellant may be filled in the inner bag together with the contents.

Further, the propellant may be filled in the outer container without filling the inner bag.

[0010] The propellant may be mixed with the contents and filled in the inner bag and also filled in the outer container.

The inner bag is made of polyethylene, polypropylene, polystyrene, vinyl chloride, polyamide, ABS
It may be formed from resin or one of polycarbonate.

The propellant may be composed of one or more of liquefied petroleum gas, dimethyl ether, carbon dioxide, nitrous oxide, chlorofluorocarbon, and compressed air.

[0013]

Since the present invention is constructed as described above, if the inner bag is filled with the contents and only the outer container is filled with the propellant, the propellant in the outer container is filled with the inner bag over time. And is mixed with the contents in the inner bag. Then, the permeation is completed when the pressures in the inner bag and the outer container are balanced.

The balance between the pressure in the inner bag and the pressure in the outer container is not limited to the case where only the outer container is filled with the propellant, but the inner bag is filled with the propellant together with the contents, and the outer container is filled with the propellant. May not be filled. Further, when both the inner bag and the outer container are filled with the propellant, the pressure is balanced by the permeation.

Since this pressure equilibration is carried out over a certain period of time after filling, it can be carried out not in the manufacturing plant but in the process of transporting the product or displaying it at the store. Therefore, the work of dissolving the contents and the propellant at the time of filling is not required at all, so that the manufacturing process can be simplified and an inexpensive product can be obtained.

Further, since the propellant is mixed and coexisted in the contents, stable foams and fog can be obtained even at the beginning and end of the injection. In addition, since the volume of the inner bag can be changed as the content is reduced, misuse does not occur even if the outer container is disposed in an arbitrary direction such as inverted or sideways to eject the content.

Further, even if the pressure changes between the inner bag and the outer container due to the ejection of the contents, the vaporized gas of the propellant permeates the inner bag and maintains the pressure equilibrium after a certain period of time. I can do it.

The contents to be filled in the inner bag are as follows:
As hair products, hair spray, hair dresser conditioner, hair shampoo and conditioner, acid hair dye, two-type oxidized permanent hair dye, color spray / bleaching agent, perm, hair restorer, hair foam, hair tonic, sleeping habits It can be used for straightening spray, fragrance for hair, etc.

As cosmetics, it can be used for shaving creams, aftershave lotions, perfumes / colognes, face wash, sunscreen, foundations, depilatory / bleaching agents, bath agents, toothpastes, packs and the like.

As the deodorant / antiperspirant, it can be used for antiperspirants, deodorants, body shampoos and the like. In addition, as other human body products, it can be used as a muscle anti-inflammatory agent, a skin disease agent, an athlete's foot medicine, a pest repellent, a wiping agent, an oral agent, a wound medicine, a burn treatment agent and the like.

The insecticide can be used as a space insecticide, cockroach insecticide, horticultural insecticide, acaricide, unpleasant insecticide and the like. Further, as a coating agent, it can be used for household paints, automotive paints, undercoating and the like.

As the cleaner, it can be used for household glass cleaner, carpet cleaner, bath cleaner, floor / furniture polisher cleaner, shoes / leather cleaner, wax polisher and the like. Further, as other household goods, it can be used as an indoor deodorant, a toilet deodorant, a waterproofing agent, a laundry paste, a herbicide, an insect repellent for clothing, a flame retardant / fire extinguisher, a disinfectant, etc. .

For industrial use, it can be used as a lubricating rust preventive, adhesive, metal flaw detector, mold release agent, caulking agent and the like. For automobiles, anti-fog agents, deicing agents,
It can be used for puncture repair agents, engine cleaners and the like. In addition, it can be used for animal products, hobby entertainment products, and foods such as coffee, juice, cream, and cheese.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. (1) is an outer container, as shown in FIG.
The valve mechanism (3) is arranged in (2). This valve mechanism
(3) is a housing (4) arranged at the center of the opening (2).
The stem (5) is slidably inserted in the vertical direction, and the stem (5) is slidably inserted into the outer container (7) by a pressing ridge (7) interposed between the stem (5) and the bottom wall (6) of the housing (4). It protrudes at the top of 1). In addition, a nozzle is provided at the upper end of this stem (5).
A push button (10) having (8) is fixed.

A flow passage (11) for the contents is formed in the stem (5) from the protruding upper end surface to a position corresponding to the inside of the housing (4), and communicates with the flow passage (11). An orifice (12) is opened in the side surface of the housing (4).
This orifice (12) has a stem gasket (13)
When the stem (5) is not pressed, the housing (4)
When the stem (5) is pressed, the orifice (12) is opened so that the contents can be ejected to the outside. Then, by covering the upper surface of the housing (4) with a metal lid (14) together with the stem gasket (13), the housing (4),
The stem (5) and the stem gasket (13) are integrated to form a valve mechanism (3).

A flange (15) projects from the outer periphery of the upper end of the housing (4).
An annular wall (16) protrudes from the lower surface of (15). The upper end opening of the inner bag (17) is formed on the outer periphery of the annular wall (16).
By mounting (18), inner bag (17) and valve mechanism
(3) is connected.

The inner bag (17) is formed so that its volume can be changed as the contents are reduced, and is made of a material that transmits the propellant but does not transmit the contents.
The inner bag (17) can be formed from one of polyethylene, polypropylene, polystyrene, vinyl chloride, polyamide, ABS resin, or polycarbonate.

The inner bag (17) is made of the above-mentioned material and has a thickness in the range of 0.1 mm to 0.6 mm so that the volume can be changed as the content decreases. Also, inner bag
(17) is pleats in the vertical direction as shown in FIGS.
Forming (20) facilitates changing the volume. And, when the thickness of the inner bag (17) is less than 0.1 mm,
If the thickness exceeds 0.6 mm, it will be difficult to fold the pleat (20), and the remaining amount of the content liquid will be large. And, the thickness of the inner bag (17) is preferably formed in the range of 0.2 mm to 0.4 mm.

In the above configuration, the inner bag (1
7) Fill the contents with the outer container (1) or inner bag
(17) Alternatively, if both the outer container (1) and the inner bag (17) are filled with propellant, the propellant in the outer container (1) and / or the inner bag (17) or the propellant in both of them will become high From the side to the low pressure side through the inner bag (17). Then, when the pressures in the inner bag (17) and the outer container (1) are balanced, the permeation is completed.

Since this pressure equilibration is performed over a certain period of time after the propellant is charged, it is not a manufacturing plant, but
It can be carried out in the process of transporting products, displaying in stores, etc. Therefore, for example, shaking for dissolving carbon dioxide in the liquid content is not required at all, and the manufacturing process can be simplified and a low-cost product can be obtained.

In order to fill the inner bag (17) with the propellant, a filling nozzle (21) is connected to the stem (5) of the valve mechanism (3) as shown in FIG. The inner bag (17) is filled with the propellant via the inner bag (17). In addition, in order to fill the propellant into the outer container (1), as shown in FIG.
A filling nozzle (24) is connected to the filling hole (23) opened in 2), and the propellant is filled through the filling hole (23). And
After the completion of this filling, it was attached to the filling nozzle (24),
A grommet (25) made of a soft elastic material is protruded by a push rod (26) and fits tightly into a filling hole (23) as shown in FIG.

The injection of the contents is performed by pressing the push button (10) and depressing the stem (5), whereby the orifice is ejected.
(12) is released from the stem gasket (13), and the contents are sprayed through the nozzle (11) through the flow passage (11) by the pressure of the propellant.
Injected from (8). In this injection, since the propellant is mixed and coexisted in the contents, it is possible to obtain a stable foam, fog or the like at the beginning and at the end of the injection if necessary.
In addition, since the inner bag (17) can be changed in volume as the content decreases, the outer container (1) can be misused even if the content is injected by arranging the outer container (1) in an arbitrary direction such as inverting or turning over. Does not occur.

Even if the pressure changes between the inner bag (17) and the outer container (1) due to the injection of the contents, the vaporized gas of the propellant is released by the elapse of a certain time after the inner bag (17). Through which the pressure balance can be maintained.

Example 1 Filling method of propellant Filling contents and propellant in inner bag Product name Hair foam Contents 95% denatured ethanol 10.0 wt% Cetyl alcohol 0.2 wt% Stearyl alcohol 0.2 wt% Methylpolysiloxane poly Oxyalkylene copolymer 0.2 wt% Polyoxyethylene stearyl ether 0.6 wt% Cationized cellulose 5.0 wt% Polyoxyethylene sorbitan monolaurate 2.0 wt% Hydrolyzed collagen 0.5 wt% Glycerin 5.0 wt% Stearyltrimethylammonium chloride 0.3 wt% Fragrance 0.1 wt% Purified water 75.9 wt% Total 100.0 wt% Outer container 45 mm in diameter, aluminum can with inner volume 200 ml Inner bag Inner volume 120 ml, formed using low-density polyethylene (LDPE), as a comparative example, ethylene vinyl alcohol ( EVOH) laminated with low density polyethylene (LDPE) on both sides And aluminum were used as follows.

Then, 70 g of the above contents and a propellant
(LPG) 7 kg of 4.0 kg / cm 2 G at 20 ° C. was filled and left for one week to obtain the following results. The equilibrium pressure was 5.0 kg / cm2G at 20 ° C.

[0036]

[Table 1]

Example 2 Filling Method of Propellant Filling the inner bag with the contents and the propellant and filling the outer container with the propellant Product name Body shampoo Contents Sodium lauryl sulfate 8.00 wt% Sodium lauryl sulfosuccinate 22.00 wt% Lauryl diethanolamide 5.00 wt% Propylene glycol 5.00 wt% Preservative / disinfectant 0.10 wt% Pigment 0.05.wt% PH adjuster 0.05 wt% Purified water 59.80 wt% Total 100.00 wt% Outer container In an aluminum can with a diameter of 45 mm and a capacity of 200 ml A bag having a capacity of 120 ml was formed using low-density polyethylene (LDPE), and as a comparative example, a material obtained by laminating low-density polyethylene (LDPE) on both surfaces of ethylene vinyl alcohol (EVOH) and aluminum were used as follows.

In the inner bag, 90 g of the above contents and a propellant
(LPG) 4.0 g / cm 2 G at 20 ° C. was filled with 10 g and allowed to stand for one week to obtain the following results. Equilibrium pressure is 5.0Kg / cm2G ・ 20 ℃
Met.

[0039]

[Table 2]

Example 3 Filling method of propellant Filling propellant into both inner bag and outer container Product name Hair tonic Contents Pantothenyl ethyl ether 0.20 wt% Hinokitiol 0.05 wt% 1,3 butylene glycol 3.00 wt% Activator 0.20 wt% Fungicide 0.10 wt% Ethanol 55.00 wt% Purified water 41.45 wt% Total 100.0 wt% Outer container Aluminum can with 45mm diameter, 200ml inner volume Inner bag Inner volume 120ml, the material is low density polyethylene
Two examples were carried out, one using (LDPE) and the other using high-density polyethylene. In addition, in the inner bag as a comparative example,
Aluminum vinyl alcohol (EVOH) laminated on both sides with low density polyethylene (LDPE) and aluminum were used.

Then, the inner bag is filled with 109 g of the above contents, and the propellant (carbon dioxide) is applied only to the outer container at 15 kg / cm 2 G at 20 ° C.
Was charged to 7 g.

[0042]

[Table 3]

[0043]

Since the present invention is constructed as described above, the inner bag is filled with the contents, and at least one of the inner bag and the outer container is filled with the propellant, or both of them are filled with the propellant. When filled, the propellant permeates the inner bag over time, and the permeation is completed when the pressures in the inner bag and the outer container are balanced.

Since this pressure equilibration is carried out for a certain period of time after filling, it can be carried out not in the manufacturing plant but in the process of transporting the product or displaying it at the store. For this reason, the work of dissolving the contents and the propellant at the time of filling, which has been conventionally performed, such as shaking, is not required at all, so that the manufacturing process can be simplified and an inexpensive product can be obtained.

Further, since the propellant is mixed and coexisted in the contents, stable foams, fogs and the like can be obtained even at the beginning and end of the injection. In addition, since the volume of the inner bag can be changed as the content is reduced, misuse does not occur even if the outer container is disposed in an arbitrary direction such as inverted or sideways to eject the content.

Even if the pressure changes between the inner bag and the outer container due to the injection of the contents, the vaporized gas of the propellant can pass through the inner bag and maintain the pressure equilibrium after a certain period of time. I can do it.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a valve mechanism.

FIG. 2 is a sectional view showing one embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state in which an inner bag is filled with a propellant.

FIG. 4 is a sectional view showing a state in which an outer container is filled with a propellant.

FIG. 5 is a sectional view showing a state where the grommet is fitted to the outer container.

[Explanation of symbols]

 Reference Signs List 1 outer container 2 opening 3 valve mechanism 17 inner bag

Claims (6)

[Claims] 1. A valve mechanism is arranged at an opening of an outer container,
The inner bag whose upper end is connected to this valve mechanism is formed so that the volume can be changed along with the decrease in the contents, and the inner bag is
A double aerosol container formed of a material that transmits a propellant but does not transmit contents. 2. The double aerosol container according to claim 1, wherein the propellant is filled in the inner bag together with the contents. 3. The double aerosol container according to claim 1, wherein the propellant is not filled in the inner bag but filled in the outer container. 4. The double aerosol container according to claim 1, wherein the propellant is mixed with the contents and filled in the inner bag and also in the outer container. 5. The double bag according to claim 1, wherein the inner bag is formed of one of polyethylene, polypropylene, polystyrene, vinyl chloride, polyamide, ABS resin, and polycarbonate. Aerosol container. 6. A propellant comprising one or more of liquefied petroleum gas, dimethyl ether, carbon dioxide, nitrous oxide gas, chlorofluorocarbon, and compressed air. 4. Double aerosol container.