JP2004307067A - Aerosol container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a conventional aerosol device that injects a plurality of contents to keep excellent stability of the contents, to be used while allowing simultaneous and repeated mixing of the contents, and to become easy to manufacture, while retaining hitherto enjoyed advantages. <P>SOLUTION: The aerosol container 10 comprises an outer container 11, an inner container 12 housed in the outer container, a first communicating hole 36a (a first passage) that communicates with an enclosed space 14 between the outer container and the inner container, a second communicating hole 36b (a second passage) that communicates with the interior of a valve 13 and the interior of the inner container 12, and a valve 13 that encloses the opening portions of the outer container 11 and the inner container 12. The valve 13 has two stem holes, and the space between the first passage and a first stem hole 42a and the space between the second passage and a second stem hole 42b are independently formed of each other, while the first passage is provided on the line of the central axis of the outer container 11 penetrating through the inner container 12, and the contents charged in the enclosed space 14 and the inner container 12 are simultaneously injected. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

    The present invention relates to an aerosol container that simultaneously discharges contents filled in an outer container and an inner container housed in the outer container.

JP-B-49-8123 Japanese Utility Model Publication No. 51-39843 Japanese Utility Model Publication No. 5-36854

  Conventionally, as a product that discharges a plurality of contents simultaneously, two different aerosol containers are filled with different contents respectively, and they are bundled, and a discharge member such as a nozzle common to a stem of each valve is attached, and discharge is performed. 2. Description of the Related Art There are known two-liquid mixing-type aerosol products in which mixing is not performed before but is performed only when discharging. However, since the two containers are bundled, the structure of the discharge member is complicated, and the length of the discharge member is long in the connecting direction, so that it is difficult to grasp the container by hand and to operate the discharge member. In addition, this requires two containers, and the contents of each container must be separately filled, which not only increases the cost, but also tends to cause variation in the filling amount of the propellant in each container. The product pressures of the two may be different, and it is difficult to adjust the discharge amount of the contents from each aerosol container.

On the other hand, Patent Literature 1 discloses a distribution package in which an inner container is connected to a lower portion of a housing of an aerosol valve and an immersion tube having a tip extending to a bottom of a container body is provided on a side surface of the housing. Further, Patent Document 2 discloses a chemical liquid mixing / injecting apparatus in which a suction pipe extending to the bottom of a container body is mounted at the center of a housing bottom, and a storage container is suspended from an edge of the bottom. In these devices, the inner container (storage container) and the container body are respectively filled with two types of substances, and can be ejected with a common propellant, so that the discharge amount can be easily adjusted. In addition, since the injection operation is performed by one valve, a difference in the operation method by the user (such as the pressing method and the pressing amount) is less likely to occur, and the discharge member can be simplified and designed easily. Further, since a plurality of contents are stored in one container, the product can be gripped and operated in the same manner as a conventional general aerosol container. In addition, since these devices have independent passages to the stem (valve) between the inner container (storage container) and the inside of the container main body, the contents are kept separated from each other until immediately before use, and mixed during use. Can squirt.
Patent Literature 3 discloses an aerosol device for mixing a plurality of liquids, in which a part of a valve housing is an internal container, and a dip tube extending through the internal container to the bottom of the aerosol container is provided. The aerosol device is provided with a stopper in the inner container. When the housing is operated, the stopper is detached from the inner container, the contents in the inner container are mixed with the contents in the aerosol container, and the mixture is ejected.

In the devices of Patent Documents 1 and 2, since the immersion pipe and the storage container are attached from the side of the housing, the outer diameter of a set of valves to which these are attached is larger than the outer diameter of the mounting cup of the valve, so that the aerosol container can be used. Storage is difficult. In addition, since the structure is complicated and not symmetrical, the weight balance is poor, it is difficult to mechanically insert it into the aerosol container, and the production is troublesome.
Further, the device disclosed in Patent Document 3 has a simple structure and is symmetrical to the left and right, so that it is easy to manufacture.

  The present invention maintains the advantages of the conventional aerosol device in which a plurality of contents are filled in a single container and sprays them, has excellent stability of the contents, can be repeatedly used at the time of use, and can be manufactured. It is an object to provide an easy aerosol container.

The aerosol container of the present invention (Claim 1) comprises: an outer container; an inner container housed in the outer container; a first passage communicating with a closed space between the outer container and the inner container; A second passage communicating with the outer container, the outer container and a valve closing an opening of the inner container, wherein the first passage penetrates the inner container and is provided on a central axis of the outer container. The valve has two stem holes, a first passage connecting the first stem hole and the first passage, a second passage communicating the second stem hole and the second passage, and Each path is formed independently, and the contents filled in the closed space and the contents filled in the inner container are simultaneously ejected.
A second aspect of the aerosol container of the present invention (claim 2) is a first passage communicating with an outer container, an inner container housed in the outer container, and a closed space between the outer container and the inner container. And a second passage communicating with the inside of the inner container, comprising a valve closing the opening of the outer container and the inner container, wherein the first passage penetrates the inner container and has a center at the center of the outer container. The first passage and / or the second passage, which are provided on an axis, have a check valve, and simultaneously inject the contents filled in the closed space and the contents filled in the inner container; It is characterized by.
In these aerosol containers, it is preferable that the inner container has a leg supported by the bottom of the outer container (claim 3). Further, it is preferable that the inner container has a portion capable of transmitting external pressure to the inside (claim 4). In particular, it is preferable that the inner container comprises a cylinder and a piston that slides in the cylinder (Claim 5), or a flexible inner bag (Claim 6).
Further, the aerosol product of the present invention (claim 7) is characterized by comprising the above-mentioned aerosol container, contents and propellant filled in the closed space, and contents filled in the inner container. I have. In such an aerosol product, it is preferable that the content filled in the closed space contains a powder (claim 8).

  The aerosol container of the present invention (Claim 1) is provided with the first passage communicating the valve with the closed space, and the second passage communicating the valve with the inner container. It can be carried out. Further, since the first passage penetrates the inner container and is provided on the central axis of the outer container, the configuration from the valve to the inner container can be substantially symmetrical, and the aerosol composition can be obtained. There is no need to increase the size of the valve in the radial direction to secure a passage therethrough, so that the valve can be made compact and can be easily stored in the outer container. Therefore, accommodation of the inner container and attachment of the valve are easy, and the manufacture is simple. In addition, since it has rotational symmetry, its weight balance is good. Further, in such an aerosol container, the valve has two stem holes, a first passage connecting the first stem hole and the first passage, and a second passage connecting the second stem hole and the second passage. Since there are two paths and each path is formed independently, the contents filled in the inner container and the closed space are not mixed in the aerosol container. Therefore, those contents can be stably stored for a long time without deterioration in performance.

According to the second aspect of the aerosol container of the present invention (Claim 2), since the check valve is provided in the first passage and / or the second passage, the contents to be filled in the inner container and the sealed space are inside the housing. In the case of mixing with, the mixed contents can be prevented from flowing back to the inner container or the closed space side and coming into contact with the contents filled in the inner container or the internal space, and the performance of the contents deteriorates for a long time Can be stored stably without causing
When the inner container has a leg supported on the bottom of the outer container, the inner container may be connected to the inner container at a manufacturing stage such as when the inner container is filled with contents or when a propellant is filled in a closed space. Since the inner container is supported by the legs even when a force is applied from above, the inner container is hardly deformed in the downward direction and can be easily filled. Further, the seal structure when the valve is crimped is stable, and the sealability is high (claim 3).
Further, when the inner container can transmit the external pressure to the inside (claim 4), by adding a propellant or the like only to the closed space, the contents filled in the closed space and the inner container are simultaneously injected. be able to. In particular, when the inner container is a piston (Claim 5) and when the inner container is a flexible inner bag (Claim 6), it is preferable to inject the entire amount of the contents.

  The aerosol product of the present invention (claim 7) is an aerosol product that can be stably stored for a long period of time without contact of the two liquids and is easy to manufacture because the aerosol container described above is used. Further, in such an aerosol product, when the content to be filled in the closed space has powder, the powder in the content can be uniformly dispersed by, for example, shaking the aerosol product before spraying. Therefore, the contents including the powder can be uniformly jetted (claim 8).

  Next, the aerosol container of the present invention will be described with reference to the drawings. 1A is a cross-sectional view showing an embodiment of the aerosol container of the present invention, FIG. 1B is a cross-sectional view showing a state before filling, FIG. 2A is a cross-sectional view showing an embodiment of the aerosol valve used in FIG. 1A, and FIG. FIG. 2c is an enlarged sectional view showing a part thereof, FIG. 3 is a sectional view showing another embodiment of the aerosol container of the present invention, and FIG. 4a is still another example of the aerosol container of the present invention. FIG. 4b is a partially enlarged view showing the bottom of the inner container of FIG. 4a, FIG. 5 is a sectional view showing still another embodiment of the aerosol container of the present invention, and FIG. 6 is a sectional view showing the aerosol container of FIG. FIG. 7 is a sectional view showing another embodiment of the aerosol container of the present invention. FIG. 8a is a sectional view showing still another embodiment of the aerosol container of the present invention. FIG. It is a sectional view showing another embodiment of the aerosol valve used for azole container.

The aerosol container 10 shown in FIG. 1 includes an outer container 11 having rigidity, a flexible inner container 12 housed in the outer container, a valve 13 attached to an opening of the outer container 11 and the inner container 12, There is provided a dip tube 15 which communicates the closed space 14 between the container 11 and the inner container 12 with the inside of the valve 13.
The outer container 11 is a conventionally known one, and a metal plate such as aluminum or tin is formed into a bottomed cylindrical shape by drawing or the like, and a shoulder portion and a neck portion are formed on the upper portion thereof by necking or the like. Beads are formed by curling. In addition, the bottom protrudes inward, thereby providing strength that can withstand the pressure from the inside of the outer container. Other materials such as synthetic resin and glass may be used.

The inner container 12 has a cylindrical shape, and is provided with a seal engaging portion 17 formed in a middle portion thereof and into which the seal member 16 is fitted. Further, a cylindrical leg 19 is formed integrally with the inner container 12 at a lower portion of the inner container 12. A cutout portion 18 is formed in the leg portion 19. Others are substantially the same as the conventional inner bag for double aerosol, a shoulder is provided near the upper end, a neck is formed at the upper part of the shoulder, and an outwardly expanding flange is formed at the upper end of the neck. ing. As such an inner container, a thin flexible material such as a synthetic resin, a metal foil such as aluminum, a laminate sheet of a synthetic resin and a metal, etc. is used. Further, a material that is partially different depending on the content to be filled may be used.
The seal member 16 has a through hole 21 at the center thereof, through which the dip tube 15 can be penetrated, and a tapered and truncated cone-shaped body portion 22 which is tapered downward and protrudes from the upper surface of the body portion. 15, a cylindrical engaging portion 23 slidably fitted with the flange 15, a flange portion 24 formed in a tapered shape on the upper portion of the body portion, and two annular members provided in order on the lower side surface of the body portion. And the ridge 25. In addition, the engaging portion 23 is provided in a tapered shape so that the upper end opening is widened toward the upper end. For this reason, the tip of the dip tube 15 is easily brought into contact with the upper end opening of the engaging portion 23, and the fitting of the dip tube 15 to the seal member 16 is facilitated. Further, the outer diameter above the ridge 25 is formed slightly larger than the inner diameter of the seal engagement portion 17 of the inner container, and the outer diameter below the ridge 25 is slightly smaller than the inner diameter of the seal engagement portion 17. Is molded. Thereby, the bottom of the inner container 12 is sealed by fitting the seal member 16 into the seal engagement portion 17. In addition, the ridge 25 prevents the seal member 16 from detaching from the seal engagement portion 17 and jumping out. A seal ring is provided in the through hole 21 (not shown).

As shown in FIG. 2, the valve 13 includes a mounting cup 26 that is crimped on a bead portion of the outer container 12, a housing 27 that is held at the center of the mounting cup 26, and is vertically movably housed in the housing 27. The stem 28 has two stem holes, a spring 29 for urging the stem 28 upward, and a dip tube insertion tool 30 provided at the lower end of the valve.
The mounting cup 26 is a conventionally known one, for example, is made of metal such as aluminum or tinplate, and has a curved flange 32 which is crimped to a bead portion of the outer container 11 via a flange portion of the inner container 12 and a gasket 31. At the center, there is an opening 33 formed slightly larger than the diameter of the stem 28 and a bottomed cylindrical housing holding portion 34 for holding the housing 27.

The housing 27 is formed at the center of the bottom and is connected to the dip tube engaging portion 35 that engages with the dip tube 15, and the housing 27 communicates with the sealed space 14 via the dip tube 15. The first communication hole 36a, the second communication hole 36b formed in the upper side surface and communicating with the inner container 12, and the stem hole 41 of the stem 28 (the first stem hole 41a and the second stem hole 41b) are sealed. It comprises a stem rubber 37 (first stem rubber 37a, second stem rubber 37b) and a fixing member 38 for supporting the stem rubber 37 (see FIG. 2c). The interior of the housing 27 is divided into a first storage portion 39a and a second storage portion 39b by the stem 28 and the stem rubber 37, and the contents A introduced through the first communication hole 36a and the second storage hole 36b The contents B to be introduced are provided so as not to be mixed in the housing 27 of the valve. A gasket 40 is provided at the tip of the dip tube engaging portion 35, thereby sealing between the housing and the inner container.
The stem 28 has first and second stem holes 41a and 41b formed at the lower portion thereof, and discharge holes 42 (first and second discharge holes 42a and 42b) communicating with the stem holes 41 independently. Is formed. In addition, conventionally known ones can be adopted as the stem rubber 37 and the spring 29.

The dip tube insertion tool 30 is cylindrical, and has a body portion 45 that engages with the dip tube engagement portion 35 of the housing, and a tapered shape such that the bottom area increases downward from the lower end of the body portion. And an insertion portion 46 provided at the bottom. When the valve 13 is attached to the outer container 11 after the sealing member 16 with the dip tube 15 inserted therein is inserted into the seal engagement portion 17 of the inner container 12, the tip of the dip tube 15 is dipped. By contacting the insertion portion 46 of the tube insertion tool 30, the dip tube 15 can be guided to the dip tube engaging portion 35 of the housing, and mounting of the dip tube on the valve 13 becomes easy.
The seal member 16, the housing 27, the stem 28, and the dip tube insert 30 can all be made of a metal such as stainless steel or a synthetic resin such as Duracon or nylon, and a synthetic resin is particularly preferable.

The dip tube 15 is provided so as to penetrate the inner container 12 from the dip tube engaging portion 35 straight down to the axial center of the housing 27, and a flow path from the first communication hole 36a of the housing to the sealed space 14 is claimed. 1 corresponds to the first passage. The length of the dip tube 15 is not particularly limited as long as it penetrates the bottom of the inner container 12. However, since the end is near the bottom of the outer container 11, almost all of the content filled in the closed space 14 can be injected without remaining.
As such a dip tube 15, it is preferable to use a metal (for example, stainless steel) or a synthetic resin having high corrosion resistance and non-permeability to the contents, or to coat the surface of the metal with a synthetic resin. Thereby, the dip tube 15 does not react with the contents filled in the closed space 14 or the inner container 12. Further, the contents in the closed space 14 remaining in the dip tube and the contents in the inner container 12 outside the dip tube can be prevented from mixing and reacting by permeating the dip tube 15. .

  In the aerosol container 10, when the ejection member mounted on the stem 28 is pressed down with a finger, the stem 28 moves downward, the stem hole 41 is opened and communicates with the atmosphere, and the propellant filled in the closed space 14 is closed. The content A is sucked up from the dip tube 15 by the pressure, and is introduced into the first storage portion 39a in the valve via the first communication hole 36a. At the same time, the content B in the inner container is introduced into the second storage portion 39b in the valve from the second communication hole 36b. Further, these contents are pushed out from the first storage portion 39a to the first discharge holes 42a via the first stem holes 41a, and from the second storage portion 39b to the second discharge holes 42b via the second stem holes 41b. Are discharged from the discharge member at the same time (see FIG. 2B).

With such a configuration, the aerosol container 10 can separately fill and store the contents in the inner container 12 and the closed space 14, and independently spray each of the contents. can do. As described above, the first passage described in claim 1 refers to a flow path from the first communication hole 36a of the housing to the closed space 14, and the second passage described in claim 1 is defined as the inner container 12. And a second communication hole 36b of the housing which directly communicates with the housing.
Further, by adjusting the size of the communication hole 36, the stem hole 41, and the discharge hole 42 of the aerosol container 10, the flow rate of the content can be controlled, and the discharge amount of each content can be adjusted at an appropriate ratio. Can be adjusted.
The inner volume of the inner container and the inner volume of the closed space can be appropriately designed depending on the type of the contents to be filled, the discharge ratio, and the like, but the inner volume ratio of the inner container and the closed space is 5:95 to 70. : 30, more preferably 10:90 to 60:40.
In the present embodiment, the two contents are not mixed in the valve, but the two contents may be mixed in the stem by using one discharge hole. In this case, even if the content mixed after the injection remains in the stem, its flow diameter is larger than that of the other flow paths.

  The contents to be filled in the aerosol container 10 may be the same contents, but are preferably different types. The different types of contents include the active ingredients of the contents (stock solution) to be filled, compounding components such as a solvent, the form of the contents such as liquid, gel, and cream, as well as homogeneous and heterogeneous systems. This means that the state of contents such as emulsion, dispersion and the like is different.

  In the aerosol container of the present invention, since the contents are filled in the inner container and the closed space, the contents do not come into contact with or mix with each other when stored. Therefore, as the contents to be filled in each of them, it is possible to use a mixture of a reaction component which reacts upon contact or mixing of the contents at the time of ejection or after ejection to exhibit an effect or to activate. In addition, since a substance whose contents are easily dissolved or mixed with each other can be used, a reaction component easily reacts at the time of discharge or after discharge, and an effect is easily obtained.

  Reactions caused by contact or mixing of the contents include neutralization reaction, hydration reaction, oxidation / reduction reaction, ion exchange reaction, dissolution, decomposition, and the like. Examples include heat generation, cooling, thickening, color development (discoloration), film formation, foaming, and antiperspirant.

  Examples of the combination of the reaction components for the neutralization reaction include a water-soluble polymer and a pH adjuster (an acidic component or an alkaline component), such as a carboxyvinyl polymer and an alkaline component, an acrylic acid / threaleth copolymer or an acrylic acid / cetes copolymer. Examples thereof include a coalescence and an alkali component, an acrylic acid / aminoacrylic acid / PEG / alkyl (C10 to C20) copolymer and an acidic component. These can be used for applications such as hair setting agents, hair dyes, anti-inflammatory analgesics, hot flashes, coolants, etc., and improve adhesion by increasing the viscosity of the discharged contents (discharged material). It is possible to obtain effects such as improvement in the sustainability of the cooling sensation.

  Examples of the combination of the reaction components that undergo the hydration reaction include polyhydric alcohols such as glycerin, diethylene glycol, and propylene glycol and water, inorganic powders such as silicic anhydride and zeolite, and water. These are used for applications such as humectants, cleansing agents, packs, and shaving foams, and can provide a warm feeling due to heat of hydration.

  Examples of the combination of the reaction components for the oxidation / reduction reaction include a dye such as paraphenylenediamine and an oxidizing agent such as hydrogen peroxide and an oxidase, sodium sulfite and hydrogen peroxide, and sodium thiosulfate and hydrogen peroxide. In the case of a combination of a dye and an oxidizing agent, the combination is used as a hair dye, and a hair dyeing effect by color development (discoloration) can be obtained. The combination of sodium sulfite, sodium thiosulfate and oxidizing agent is used for hair dyes, moisturizing creams, cleansing agents, packs, shaving foams, etc. Can be obtained.

  Examples of the combination of the reaction components for the ion exchange reaction include sodium alginate and calcium lactate. These are used for the formation of a protective film and for applications such as foods, play equipment, and ornaments, and can provide a film forming effect.

Examples of the combination of the dissolving reaction components include urea and water, (anhydrous) magnesium chloride and water, chlorohydroxyaluminum and water, and the like. In the case of a combination of urea and water, it is used for applications such as antipruritus, emollient, exfoliant, and ointment, and can provide a cooling sensation effect due to heat absorption. In the case of a combination of (anhydrous) magnesium chloride and water, it is used for moisturizing agents, cleansing agents, packs, shaving foams, and the like, and can provide a feeling of warmth. In the case of chlorohydroxyaluminum and water, it is used as an antiperspirant, and when chlorohydroxyaluminum is dissolved in water, it is ionized and exerts an antiperspirant effect.
Examples of the combination of the reaction components for the decomposition reaction include a carbonate such as sodium hydrogen carbonate, sodium carbonate, potassium hydrogen carbonate, and potassium carbonate, and an acid such as citric acid, tartaric acid, and phosphoric acid. When dissolved in an aqueous solution containing the same, carbonates are decomposed to generate carbon dioxide gas, and a foaming effect can be obtained by blending with a foaming agent such as a surfactant. These are preferred for hair cosmetics, human cosmetics, quasi-drugs, pharmaceuticals, and the like, but their uses are not particularly limited. In addition, a blood circulation promoting effect by the generated carbon dioxide gas is also obtained, and it can be suitably used as a hair restorer.

The reaction components are mixed with different contents so that the reaction components do not react with each other when the contents are filled in a closed space or an inner container. Specific examples of the contents include dyes described in, for example, JP-A-10-45547, JP-A-10-287534, JP-A-2001-2537, JP-A-2001-288555, JP-A-2001-294519, and JP-A-2001-181159. Hair, enzymatic hair dyes described in JP-A-63-46313, JP-A-6-172145, cleansing described in JP-A-7-173303, JP-A-6-336413, JP-A-8-268828 And the like.
Also, preferably, the closed space 14 is filled with a liquefied petroleum gas, dimethyl ether, or a liquefied gas that is a mixture thereof, and the other, preferably, a viscous material such as a gel, cream, or paste is contained in the inner container. Is filled, and these are simultaneously ejected, the other content is cooled, and the discharged matter is frozen or solidified, and the discharge state can be changed.

  The form of the content is not particularly limited, such as a liquid, a gel, a cream, and a paste. The first content filled in the closed space can be mixed with the above-described liquefied gas together with the stock solution. Further, a compressed gas such as nitrogen gas, carbon dioxide gas, or compressed air may be filled. In this case, the vapor pressure of the liquefied gas or the compressed gas acts as a pressurizing agent for the second content.

  A method of manufacturing the aerosol product by filling the aerosol container 10 with the contents described above uses an outer container 11 in which an inner container 12 is inserted in advance, and a stock solution filling nozzle or the like is provided in a seal engagement portion 17 of the inner container. Insert and fill with stock solution A '. At this time, the stock solution moves into the outer container 11 from the notch 18 of the inner container. After filling the outer container 11 with the stock solution A ', the inner container 12 may be inserted. Thereafter, the seal member 16 having the dip tube 15 inserted therein is fitted into the seal engagement portion 17 of the inner container 12 (see FIG. 1B). At this time, since the leg 19 of the inner container 12 is supported in contact with the bottom surface of the outer container 11, the leg 19 is bent when the seal member 16 is pressed down, and the seal engaging portion 17 is bent. Are securely engaged with the sealing member 16 without being deformed. Then, the inner container 12 is filled with the undiluted solution B, and the valve 13 provided with the dip tube insertion tool 30 is placed on the opening of the outer container 11 while guiding the tip of the dip tube 15 to the dip tube engaging portion 35. Next, a propellant (a liquefied gas or a compressed gas) is filled in the closed space 14 by filling with an under cup, and the valve 13 is further pushed into the outer container 11 and crimped and fixed. At this time, it is preferable that the inner container 12 is filled so as to be filled with the contents B as shown in FIG. 1A. This is because when the inside of the inner container 12 is not filled with the contents B, a space is easily formed in the inner container 12, and the gas in the inner container 12 is first injected from the second communication hole at the start of use, and This is because the ratio of the liquid ejection differs depending on the remaining amount of the content B. In addition, since the sealed space 14 has a space of 20 to 40% by volume of the outer container full volume in a state where the contents are filled, the contents in the sealed space can be agitated by shaking the aerosol container up and down. it can. For this reason, liquefied petroleum gas is dispersed in an aqueous stock solution like an aerosol composition for foams, and non-uniform contents forming an emulsion, and powders in an aerosol composition like an aerosol composition for antiperspirants and wounds. Even in the case of non-uniform contents in which the body is dispersed, a uniform composition can be jetted by stirring the contents before jetting to make the contents uniform. In the case of an aerosol product containing powder in a stock solution, after filling the powder, a liquid component such as an oil component may be filled (two-stage filling), or a mixture of the powder and the liquid component in advance may be filled. Is also good.

  The aerosol container 10a shown in FIG. 3 has a dip tube 15 vertically divided by a seal member 16a, and other configurations are substantially the same as the aerosol container 10 of FIG. The seal member 16a has an upper engaging portion 23a that engages with the upper dip tube 15a formed on the upper surface thereof, and a lower engaging portion that engages with the lower dip tube 15b formed at a position behind the engaging portion. 23b, and the other configuration is substantially the same as the seal member 16 of FIG. Here, the lower dip tube 15b is provided to be longer than the distance from the seal member 16 to the bottom of the outer container 11, and therefore extends from the notch 18 of the inner container to the side edge of the bottom of the outer container 11. For this reason, the contents accumulated on the bottom side edge of the outer container 11 can be sent to the housing. The lower dip tube is made of a softer material than the upper dip tube, and can be bent by its own weight, so that the contents can be further used up.

  In the aerosol container 50 shown in FIG. 4, the inner container 51 has the seal engagement portion 17 for accommodating the seal member 16 at the bottom 52, and the bottom 52 does not contact the bottom of the outer container 11. . Further, a through hole 53 is formed at the center of the bottom portion 52 to facilitate filling of the closed space 14 with the contents (undiluted solution) (see FIG. 4B). Other configurations are substantially the same as the inner container 12 of FIG. The seal member 16 has elasticity, and has a hole at the center thereof, which is slightly smaller than the outer diameter of the dip tube 15. The bottom portion 52 of the inner container is sealed by engaging the seal member 16 with the seal engagement portion 17 and passing the dip tube 15 through. The aerosol container 50 is substantially the same as the valve 13 of FIG. 1 except that the valve does not include a dip tube insertion tool. Regarding the manufacturing method, the inner container 51 is housed in an outer container, and a stock solution filling nozzle or the like is inserted into the through hole 53 from the opening of the inner container 51 to fill the contents (stock solution A ′). Thereafter, the seal member 16 with the dip tube 15 inserted into the hole of the seal member 16 is inserted into the seal engagement portion 17 (see FIG. 4B). Next, the content B is filled in the inner container 51, and the valve is mounted. Further, the propellant is filled into the closed space 14 of the outer container by filling the under cup, and the valve is fixed. Note that a valve for filling the propellant may be provided at the bottom of the outer container.

In the aerosol container 60 shown in FIG. 5, the valve housing 27 has an annular protrusion 61 on its outer peripheral surface, and the inner container 62 engaged with the protrusion 61 acts as a cylinder. Other configurations are substantially the same as the aerosol container 10 of FIG.
The inner container 62 has an inner diameter substantially the same as the outer diameter of the valve housing 27, and has a body 65 having an upper end opening 63 engaged with the housing 27, and an inner peripheral surface of the body 65 vertically. And a piston member 66 slidable in the direction. A cylindrical leg 64 having a notch 64a is formed integrally with a lower portion of the inner container 62. It is preferable to provide a sealing material such as a gasket between the upper end opening 63 and the housing 27.
The outer diameter of the body portion 65 is smaller than the inner diameter of the outer container opening (bead portion), and the lower end is in contact with the bottom of the outer container, and is provided on the inner periphery of the middle portion in an annular shape protruding radially inward. It has a locking portion 67. The cutout portion 64a of the leg is provided below the locking portion 67.
The body 65, the leg 64, and the locking portion 67 may be integrally formed of synthetic resin or the like, or may be separately formed. When molded separately, for example, the trunk 65 and the leg 64 are molded of synthetic resin or the like, the locking member 67 is molded of a material having a sealing action, and the locking member 67 is placed between the trunk and the leg. By forming so as to sandwich it, the space between the closed space 14 and the inner container 62 can be more firmly sealed.
The piston member 66 has a circular shape provided with a through hole 68 at the center thereof for passing the dip tube 15, and has a flange 69 on an outer peripheral edge thereof. Seal rings 70a and 70b are provided at the outer peripheral edge and the inner peripheral edge of the piston member 66, respectively, so that the piston member 66 and the inner container 62 and the piston member 66 and the dip tube are respectively provided. 15 and seal. As a result, the piston member 66 can be slid up and down in an airtight manner on the inner surface of the body 65 of the inner container, and when the contents B are densely filled in the cylinder, the contents are locked by the locking portion 67. It is locked in the container 62. As the piston member 66 slides up and down in the body 65, the volume in the inner container 62 changes.

  As shown in FIG. 6, the valve 13 has a second communication hole 36b provided in a lower part of the side surface of the housing, and communicates with the second storage portion 39b. Further, an annular projection 61 is formed on the second communication hole 36b. Thereby, the upper end opening 63 of the inner container can be securely locked. The other configuration is substantially the same as the valve 13 shown in FIG.

  When the stem 28 of the aerosol container 60 is pushed down, the propellant filled in the closed space 14 between the outer container 11 and the inner container 62 pushes up the bottom surface of the piston member 66 from the cutout portion 64a of the leg, and The contents B of the container 62 are introduced into the second storage portion 39b from the second communication hole 36b (second passage) of the valve. At the same time, the contents A of the closed space 14 are introduced from the dip tube 15 into the first storage portion 39a of the valve through the first communication hole 36a (first passage). Here, by changing the position of the protrusion 56 of the inner container, the filling amount of the inner container 51 can be changed.

The aerosol container 80 shown in FIG. 7 is provided with a valve 81 and an inner container 82 having a piston function integrally, and the inner container 82 does not have a leg.
This valve 81 is provided with a second communication hole 36b communicating with the second storage portion 39b on the bottom surface of the valve 81, and other than that, is substantially the same as the housing 28 of the valve in FIG.
The inner container 82 is formed integrally with the body portion 83 at the lower end of the housing 28 so that the outer diameter is larger than the outer diameter of the housing. This size is not particularly limited, and may be the same as or smaller than the outer diameter of the housing 28, and can be appropriately determined according to the contents. Further, a cylindrical piston locking member 84 protruding inward in the radial direction is fitted into the lower end of the body portion 83. Further, a piston member 85 and a spring 86 are provided in the inner container 82. With this spring 86, the injection amount of the content B in the inner container 81 can be adjusted. The piston member 85 has a through hole 87 at the center thereof, which penetrates the dip tube 15, a concave seal engaging portion 89 which engages with a seal material 88 placed on the through hole 87, and has a constant A spring locking portion 90 for locking the spring 86 biased downward is provided. The top surface inside the inner container 82 also has a similar spring locking portion 90. The other structure is substantially the same as the aerosol container 60 shown in FIG. 5, and has the same effect.

In the aerosol container 100 shown in FIG. 8, the contents filled in the inner container and the closed space in the housing are mixed, and the valve allows the flow from each passage to the inside of the housing, and allows the valve to flow from the inside of the housing to each passage. A check valve is provided to block the flow.
The valve 101 has a protruding portion 102 which is fitted into the dip tube insertion tool 30 a and communicates the inner container 12 and the closed space 14 with the inside of the housing 27. The protruding portion 102 is formed at the lower end thereof, and communicates with the sealed space 14 via the dip tube insertion tool 30a. The first communication hole 36a is formed on the side surface of the first communication hole 36a. And a second communication hole 36b communicating with the second communication hole 36b.
The dip tube insertion tool 30a is a cylindrical one in which the introduction holes 104 (the first introduction holes 104a and the second introduction holes 104b) respectively communicating with the first communication holes 36a and the second communication holes 36b are formed. A check valve 105 is provided in these introduction holes 104. Other configurations are substantially the same as those of the dip tube insert 30 of FIG. The check valve 105 includes a ball 106 installed at the opening of each of the introduction holes 104, and a spring 107 for pressing the ball 106 against the introduction hole 104 so as to close it.
As a result, the contents introduced from the respective introduction holes 104 are mixed in the housing 27 including the protruding portion 102 of the valve, and the mixed contents can be jetted without backflow. In particular, when the physical properties, properties, etc. of the respective contents change by mixing these contents, the mixed contents or one of the contents flows back into the other space, so that the aerosol product as a whole. Can be stably stored for a long period of time without lowering the effect.

  Although not described in the present embodiment, the inner container need not be deformable. In that case, it is necessary to fill both the inner container and the closed space with a propellant or the like.

Next, an aerosol product was prepared by filling the content A (stock solution A ′ + propellant) and the content B into the aerosol container 10 shown in FIG.
According to the method for producing the aerosol product, the sealed space 14 of the outer container is filled with the undiluted solution A ′, the seal member 16 into which the dip tube 15 is inserted is fitted into the seal engagement portion 17, and the contents B are contained in the inner container. Fill. Thereafter, a dip tube engaging portion 35 of the valve was placed on the tip of the dip tube 15, the propellant was filled in the sealed space 14 of the outer container, and the valve 13 was fixed.

[Example 1]
5 g of the stock solution A '(powder dispersion) shown in Table 1 and 10 g of purified water as the content B were charged, and 45 g of liquefied petroleum gas (vapor pressure at 20 ° C. 0.20 MPa) was charged as a propellant. An aerosol product for sweat was manufactured.

When the aerosol product was sprayed on the skin, it became a mist and adhered to the skin in a state where chlorohydroxyaluminum was dissolved in water, immediately exhibiting a high antiperspirant effect.

[Example 2]
50 g of the gel-like stock solution A ′ shown in Table 2 and 50 g of the paste-like content B shown in Table 3 were filled, and further, nitrogen gas was charged into the closed space 14 so that the pressure was adjusted to 0.8 MPa. Manufactured aerosol products for hand creams.

When the aerosol product was discharged onto the skin, anhydrous magnesium chloride dissolved in the water and generated heat, resulting in a warm cream that could be applied to the skin.

[Example 3]
40 g of the gel stock solution A ′ shown in Table 4 and 40 g of the gel content B shown in Table 5 were filled, and nitrogen gas was further filled into the closed space 14 to adjust the pressure to 0.8 MPa. Manufactured aerosol products for hair dyes.

When the aerosol product was ejected to the hair, it turned into a gel. When the gel was mixed, the oxidation dye reacted with the hydrogen peroxide solution to dye the hair.

[Example 4]
30 g of the gel content B shown in Table 6 and 50 g of dimethyl ether (content A) as a propellant were charged to produce a cooling aerosol product.

When the aerosol product was sprayed, the gel was cooled by the heat of vaporization of dimethyl ether and hardened into an ice-like mass. When the mass was rolled with a finger, it gradually became a gel.

[Example 5]
47.5 g of a creamy undiluted solution A ′ shown in Table 7 was filled in the closed space of the outer container, 50 g of a paste-like content B shown in Table 8 was filled in an inner container, and liquefied petroleum gas (20 2.5 g of a vapor pressure (0.34 MPa) at 0 ° C. was filled in the closed space of the outer container to produce an aerosol product for a shaving foam capable of providing a warm feeling.

  When the aerosol product was ejected, the zeolite reacted with water and generated heat, forming a warm foam that could be spread on the skin.

[Example 6]
42.5 g of the liquid stock solution A ′ shown in Table 9 was filled in the sealed space of the outer container, 50 g of the gel-like content B shown in Table 10 was filled in the inner container, and liquefied petroleum gas (20 ° C.) was used as a propellant. 7.5 g) was filled in the closed space of the outer container to produce an aerosol product for foam.

  When the aerosol product was discharged, a foam having elasticity enough to be picked by hand was obtained. When both ends of the foam were picked with fingers and the foam was bent and cut, a gel appeared in the foam.

[Example 7]
46.5 g of the liquid stock solution A 'shown in Table 11 was filled in the closed space of the outer container, 50 g of the viscous liquid content B shown in Table 12 was filled in the inner container, and liquefied petroleum gas (20 3.5 g of a vapor pressure (0.39 MPa) at 0 ° C.) was filled in the closed space of the outer container to produce an aerosol product for skin (wrinkles).

  When the aerosol product was discharged, a foam having a wrinkle removing effect was obtained. In this form, retinol (vitamin A) and ascorbic acid (vitamin C) can be filled without contacting water, so that retinol and ascorbic acid could be stably stored for a long time without being decomposed.

Example 8
47.5 g of the liquid stock solution A ′ shown in Table 13 was filled in the closed space of the outer container, 50 g of the liquid content B shown in Table 14 was filled in the inner container, and liquefied petroleum gas (at 20 ° C.) was used as a propellant. Was filled in the closed space of the outer container to produce an aerosol product for an antipruritic agent.

  When the aerosol product was discharged, urea dissolved in water to obtain a cold foam and an antipruritic effect. In this embodiment, urea can be filled without contacting water, so that urea could be stably stored for a long time without being decomposed.

[Example 9]
A small amount of fragrance is filled in the closed space of the outer container as the content A ', 40 g of the liquid content B shown in Table 15 is filled in the inner container, and liquefied petroleum gas (vapor pressure at 20 ° C. .34 MPa) was filled into the closed space of the outer container to produce an aerosol product for styling.

  When the aerosol product was sprayed, the setting agent component (synthetic resin) was sprayed together with the liquefied petroleum gas to form a mist, which adhered to the hair and provided a styling effect. In the conventional hair spray, the content B containing the setting agent component was dissolved in the propellant, but if the setting agent component was blended at a high concentration, it would be difficult to dissolve in the propellant, so the setting agent component was converted to a solid content. It could not be blended at a high concentration of 5% or more. In this embodiment, since it is not necessary to dissolve the setting agent component in the propellant, it is possible to mix the setting agent component at a high concentration, and it is possible to spray in the form of a mist and obtain a high styling effect.

FIG. 1a is a cross-sectional view showing one embodiment of the aerosol container of the present invention, and FIG. 1b is a cross-sectional view showing the state before filling. 2A is a cross-sectional view showing an embodiment of an aerosol valve used in the aerosol container of FIG. 1A, FIG. 2B is a cross-sectional view showing a state at the time of injection, and FIG. 2C is an enlarged cross-sectional view showing a part thereof. . It is sectional drawing which shows other embodiment of the aerosol container of this invention. FIG. 4a is a cross-sectional view showing still another embodiment of the aerosol container of the present invention, and FIG. 4b is a partially enlarged view showing the bottom of the inner container of FIG. 4a. It is sectional drawing which shows other embodiment of the aerosol container of this invention. It is sectional drawing which shows one Embodiment of the aerosol valve used for FIG. It is sectional drawing which shows other embodiment of the aerosol container of this invention. FIG. 8A is a sectional view showing still another embodiment of the aerosol container of the present invention, and FIG. 8B is a sectional view showing an embodiment of an aerosol valve used in the aerosol container.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 10, 10a Aerosol container 11 Outer container 12 Inner container 13 Valve 14 Sealed space 15 Dip tube 15a Upper dip tube 15b Lower dip tube 16, 16a Seal member 17 Seal engaging portion 18 Notch portion 19 Leg portion 21 Through hole 22 Seal member Body 23 engaging portion 23a upper engaging portion 23b lower engaging portion 24 flange portion 25 ridge 26 mounting cup 27 housing 28 stem 29 spring 30 dip tube insertion portion 31 gasket 32 curved flange 33 opening 34 housing holding portion 35 Dip tube engaging portion 36a First communication hole 36b Second communication hole 37 Stem rubber 37a First stem rubber 37b Second stem rubber 38 Fixing member 39a First storage portion 39b Second storage portion 40 Gasket 41 Stem 41a first stem hole 41b second stem hole 42 discharge hole 42a first discharge hole 42b second discharge hole 45 trunk 46 insertion section 50 aerosol container 51 inner container 52 bottom 53 through hole 60 aerosol container 61 protrusion 62 inner container 63 Upper end opening 64 Leg 64a Notch 65 Body 66 Piston member 67 Locking part 68 Through hole 69 Flange 70a, 70b Seal ring 80 Aerosol container 81 Valve 82 Inner container 83 Body 84 Piston locking member 85 Piston member 86 Spring 87 Through hole 88 Sealing material 89 Seal engaging portion 90 Spring engaging portion 95 Aerosol container 100 Aerosol container 101 Valve 102 Projecting portion 104 Introducing hole 104a First introducing hole 104b Second introducing hole 105 Check valve 106 Ball 107 Spring

Claims (8)

An outer container,
An inner container stored in the outer container,
A first passage communicating with a sealed space between the outer container and the inner container, and a valve having a second passage communicating with the inside of the inner container, and closing an opening of the outer container and the inner container. ,
The first passage extends through the inner container and is provided on a central axis of the outer container;
The valve has two stem holes, a first passage communicating the first stem hole with the first passage, a second passage communicating the second stem hole with the second passage, and Each path is formed independently,
An aerosol container for simultaneously ejecting the contents to be filled in the closed space and the contents to be filled in the inner container. An outer container,
An inner container stored in the outer container,
A first passage communicating with a sealed space between the outer container and the inner container, and a valve having a second passage communicating with the inside of the inner container, and closing an opening of the outer container and the inner container. ,
The first passage extends through the inner container and is provided on a central axis of the outer container;
The first passage and / or the second passage has a check valve;
An aerosol container for simultaneously ejecting the contents to be filled in the closed space and the contents to be filled in the inner container. The aerosol container according to claim 1, wherein the inner container has a leg supported on a bottom of the outer container. The aerosol container according to claim 1 or 2, wherein the inner container has a portion capable of transmitting external pressure to the inside. The aerosol container according to claim 4, wherein the inner container includes a cylinder and a piston that slides in the cylinder. The aerosol container according to claim 4, wherein the inner container is a flexible inner bag. An aerosol container according to any one of claims 1 to 6,
Contents and a propellant filled in the closed space,
An aerosol product comprising contents filled in the inner container. The aerosol product according to claim 7, wherein the content filled in the closed space contains powder.