Aerosol product

Abstract

To provide an aerosol product with a simple configuration, capable of stably discharging good foam by sufficiently stirring (emulsifying) a liquid phase of liquefied gas and a foaming liquid in an actuator, and capable of stably spraying good mist by sufficiently dispersing the foaming liquid in the atmosphere of a gas phase of the liquefied gas.SOLUTION: An aerosol product 100 has an aerosol container 110 and an actuator 130, one of a plurality of storage spaces provided in the aerosol container 110 is a foaming liquid storage part 141, and the other is a propellant storage part 140. The actuator 130 has: a first flow path 134a corresponding to the foaming liquid storage part 141; a second flow path 134b corresponding to the propellant storage part 140; and an injection preparation chamber 160 and a foam formation space 173 connected to the first flow path 134a via a communication flow path 135. The second flow path 134b is connected to a middle part of the first flow path 134a.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an aerosol product having a valve unit with a stem protruding from an aerosol container and an actuator fitted to the stem, and more particularly to an aerosol product suitable for discharging the contents in a foamed state.

Background Art

[0002] Conventionally, an aerosol product having a valve unit with a stem protruding from an aerosol container and an actuator fitted to the stem is well-known, and an aerosol product that discharges the contents in the container from the actuator in a foamed state is also well-known. For example, Patent Document 1 describes a pressure-resistant aerosol container (outer container 11), a storage space (inner container 12) housed in the aerosol container (outer container 11) and provided with a volume-variable partition wall, a foaming composition filled in the storage space (inner container 12) and composed of a foaming liquid (aqueous stock solution) and a propellant (lipophilic liquefied gas), and a pressurizing agent B filled in a pressurizing chamber S between the storage space (inner container 12) and the aerosol container (outer container 11). An aerosol product (foaming aerosol product 10) is described.

[0003] In this aerosol product (foaming aerosol product 10), by setting the pressure of the pressurizing agent B to be equal to or lower than the pressure of the foaming composition and higher than the atmospheric pressure, it is possible to maintain a gas phase in the storage space (inner container 12). By shaking the aerosol container (outer container 11) up and down, the foaming composition can be emulsified into a uniform dispersion phase of a foaming liquid (aqueous stock solution) and a propellant (lipophilic liquefied gas), and a foam in a stable state can be discharged.

[0004] Further, Patent Document 2 describes an aerosol product (100) having an aerosol container (110), a foaming agent storage part (140) filled with a propellant (foaming agent LG) housed in the aerosol container (110), and a foaming liquid storage part (141) filled with a foaming liquid, and having a propellant (B) filled in the aerosol container (110) and an actuator (130). This aerosol product (100) injects a propellant (foaming agent LG) and a foamable liquid (S) into an actuator (130) under the pressure of the propellant, and by merging them in the actuator (130), it is not necessary to shake the aerosol container (110) like the aerosol product (foamable aerosol product 10) known from Patent Document 1. The propellant (foaming agent LG) and the foamable liquid (S) are sufficiently emulsified in the actuator (130) to enable stable foam discharge.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, there is still room for improvement in the aerosol products known from Patent Document 1 and Patent Document 2 above.

[0007] That is, the aerosol product known from Patent Document 2 enables stable foam discharge without shaking the aerosol container by emulsifying a low-pressure propellant and a foamable liquid in the actuator. However, when using a high-pressure liquefied gas as a foaming agent that also serves as a propellant, depending on the flow path structure in the actuator, foaming may start before sufficient emulsification with the foamable liquid, and the foaming of the foamable liquid may become unstable.

[0008] The present invention solves these problems, and an object of the present invention is to provide an aerosol product with a simple configuration that can sufficiently stir (emulsify) the liquid phase of a high-pressure liquefied gas and a foamable liquid in an actuator to stably and favorably discharge foam.

Means for Solving the Problems

[0009] The aerosol product of the present invention is an aerosol product having a valve unit with a stem protruding from an aerosol container and an actuator fitted to the stem. The aerosol container has a plurality of partitioned accommodation spaces, an inlet corresponding to the accommodation space, and one or more valve units each provided with a seal member for opening and closing the inlet. At least one of the plurality of accommodation spaces is a foaming liquid accommodation part for accommodating an accommodation containing a foaming liquid, and at least one of the other plurality of accommodation spaces is a propellant accommodation part for accommodating an accommodation containing a propellant composed of a liquefied gas. The inlet has a first inlet corresponding to the foaming liquid accommodation part and a second inlet corresponding to the propellant accommodation part. The stem has a first stem corresponding to the first inlet and a second stem corresponding to the second inlet. The actuator has a first stem fitting part fitted to the first stem, a second stem fitting part fitted to the second stem, a first flow path communicating with the first stem fitting part, a second flow path communicating with the second stem fitting part, an injection preparation chamber, a cylindrical foam formation space, a discharge port, an injection hole communicating the injection preparation chamber and the foam formation space, and a passage hole communicating the foam formation space and the discharge port. The injection preparation chamber is connected to the first flow path via a communication flow path, and the second flow path is connected to an intermediate part of the first flow path, thereby solving the above problems.

Effects of the Invention

[0010] The aerosol product of the invention according to claim 1 is such that at least one of the plurality of accommodation spaces is a foaming liquid accommodation part, and at least one of the other plurality of accommodation spaces is a propellant accommodation part. The inlet has a first inlet corresponding to the foaming liquid accommodation part and a second inlet corresponding to the propellant accommodation part. The stem has a first stem corresponding to the first inlet and a second stem corresponding to the second inlet. The actuator has a first stem fitting part fitted to the first stem, a second stem fitting part fitted to the second stem, a first flow path communicating with the first stem fitting part, a second flow path communicating with the second stem fitting part, an injection preparation chamber, and an injection hole communicating the injection preparation chamber with the outside of the actuator. The injection preparation chamber is connected to the first flow path via a communication flow path, and the second flow path is connected to an intermediate part of the first flow path. Therefore, the foaming liquid and the propellant can reach the injection preparation chamber in a state of being preliminarily stirred in the first flow path, and the foaming liquid and the propellant can be further sufficiently stirred in the injection preparation chamber. Further, by injecting from the injection hole toward the inner wall of the cylindrical foam formation space, stable and good foam discharge can be implemented. Also, since the injection preparation chamber and the foam formation space communicate with each other through the injection hole, and the foam formation space and the discharge port communicate with each other through the passage hole, foaming of the propellant in the injection preparation chamber and the first flow path can be suppressed. Therefore, the propellant and the foaming liquid can be more sufficiently stirred, and stable and good foam discharge can be implemented.

[0011] According to the configuration described in claim 2, since the cross-sectional area of the communication flow path is smaller than the sum of the cross-sectional areas of the first flow path and the second flow path, the flow path does not expand until reaching the injection preparation chamber, and vaporization of the liquefied gas, which is the propellant, can be suppressed between the aerosol container and the injection preparation chamber, and the propellant and the foaming liquid can be sufficiently stirred. According to the configuration described in claim 3, since the cross-sectional area of the communication flow path is smaller than the cross-sectional area of the first flow path, vaporization of the liquefied gas, which is the propellant, can be further suppressed between the aerosol container and the injection preparation chamber, and the propellant and the foaming liquid can be further sufficiently stirred.

[0012] According to the configuration described in claim 4, since the cross-sectional area of the second flow path is smaller than that of the first flow path, vaporization of the liquefied gas, which is the propellant, in the second flow path can be suppressed, and the propellant and the foaming liquid can be sufficiently stirred to enable stable and good foam discharge. According to the configuration described in claim 5, since the ratio of the cross-sectional area of the first flow path to the cross-sectional area of the second flow path is in the range of 3:1 to 15:1, vaporization of the liquefied gas, which is the propellant, in the second flow path can be reliably suppressed, and a sufficient amount of the propellant necessary for foaming the foaming liquid can be reliably supplied, and the propellant and the foaming liquid can be sufficiently stirred to enable stable and good foam discharge.

[0013] According to the configuration described in claim 6, since the communication flow path is connected to a position away from the central axis of the injection preparation chamber in the injection preparation chamber, a flow in which the foaming liquid obtained by stirring the foaming liquid and the foaming agent travels straight to the injection hole and is injected can be suppressed, and after the foaming liquid and the propellant are sufficiently stirred in the injection preparation chamber, they can pass through the injection hole and stably and satisfactorily discharge foam.

[0014] According to the configuration described in claim 7, the injection preparation chamber is provided with a main injection preparation chamber and a pre-injection preparation chamber formed at a position facing the communication flow path. Since the pre-injection preparation chamber is formed in a concave groove shape that opens in a direction facing the communication flow path, the foaming liquid and the propellant that have reached the injection preparation chamber from the communication flow path are stirred in the pre-injection preparation chamber, and then further sufficiently stirred while moving from the pre-injection preparation chamber to the main injection preparation chamber, and then pass through the injection hole to stably and satisfactorily discharge foam. According to the configuration described in claim 8, since a foam forming member is detachably provided on the actuator and a foam mist switching mechanism capable of switching the suction of the liquid phase and the gas phase of the propellant is provided in the aerosol container, good foam discharge in which the liquid phase of the propellant and the foaming liquid are stirred and discharged from the discharge port through the foam forming space, and good mist injection in which the gas phase of the propellant and the foaming liquid are stirred and injected outside the actuator from the injection hole without passing through the foam forming space can be switched and implemented with one aerosol product. Also, even when the gas phase of the liquefied gas, which is a propellant, is stirred with the foaming liquid, the foaming liquid and the gas phase of the liquefied gas can reach the injection preparation chamber in a state where they are pre-stirred in the first flow path, and the foaming liquid can be sufficiently dispersed in the atmosphere of the gas phase of the liquefied gas in the injection preparation chamber, enabling stable and good spray injection.

Brief Description of the Drawings

[0015]

Figure 1

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Mode for Carrying Out the Invention

[0016] Hereinafter, the aerosol product 100 according to an embodiment of the present invention will be described with reference to the drawings. For the sake of explanation, FIGS. 10 and 11 do not show parts other than the actuator 130 and the nozzle tip 150, and FIG. 12 does not show parts other than the nozzle tip 150.

[0017] As shown in FIGS. 1 to 8, the aerosol product 100 according to an embodiment of the present invention is a so-called dual valve type product in which two valve units 120 (first valve unit 120a, second valve unit 120b) are fixed to the mouth portion of the aerosol container 110 by a mounting cup 111, and two stems 121 (first stem 121a, second stem 121b) project upward. The accommodation space in the aerosol container 110 is partitioned into two accommodation spaces: a flexible foaming liquid accommodation portion 141 and a propellant accommodation portion 140 outside the foaming liquid accommodation portion 141. The foaming liquid S is densely accommodated inside the foaming liquid accommodation portion 141, and the propellant LG is accommodated in the propellant accommodation portion 140.

[0018] At the lower part of the valve unit 120, an inlet 122 (first inlet 122a, second inlet 122b) that communicates the inside and outside of the valve unit 120 is provided. The first valve unit 120a is connected to discharge the foaming liquid S inside the foaming liquid storage part 141 to the first inlet 122a, and the second valve unit 120b is connected to a hollow dip tube 143 at the second inlet 122b and is configured to discharge the liquid phase part of the propellant LG stored in the propellant storage part 140. The stem 121 protruding above the two valve units 120 has a seal member 123, and an actuator 130 is attached to the stem 121 via a stem fitting part 132 (first stem fitting part 132a, second stem fitting part 132b).

[0019] The actuator 130 is composed of a main body part 131, a nozzle tip 150 connected to the main body part 131, and a foam forming member 170 connected to the main body part 131 so as to enclose an injection hole 152 (described later) of the nozzle tip 150 in a foam forming space 173. The main body part 131 has a first stem fitting part 132a that fits into the first stem 121a, a second stem fitting part 132b that fits into the second stem 121b, a first flow path 134a that communicates with the first stem fitting part 132a via a first connection flow path 137a, a second flow path 134b that communicates with the second stem fitting part 132b via a second connection flow path 137b, a communication flow path 135 that communicates the first flow path 134a with an injection preparation chamber 160 (described later), an injection cylinder part 133 that surrounds the injection preparation chamber 160, and a rod-shaped center post 136 that extends in the axial direction of the injection cylinder part 133 inside the injection cylinder part 133.

[0020] Note that the second flow path 134b is connected to the first flow path 134a on the side of the first connection flow path 137a closer to the communication flow path 135. Also, the second flow path 134b is formed such that the flow path cross-sectional area of the second flow path 134b is smaller than the flow path cross-sectional area of the first flow path 134a, and the communication flow path 135 is formed such that the flow path cross-sectional area of the communication flow path 135 is smaller than the sum of the flow path cross-sectional area of the first flow path 134a and the flow path cross-sectional area of the second flow path 134b.

[0021] The nozzle tip 150 has a nozzle top surface 151 in which injection holes 152 are formed, a cylindrical wall portion 153 formed in a cylindrical shape from the nozzle top surface 151, and an intermediate wall portion 154 extending from an end portion of the cylindrical wall portion 153. By inserting and fitting the cylindrical wall portion 153 and the intermediate wall portion 154 into the injection cylinder portion 133, an injection preparation chamber 160 is formed in the injection cylinder portion 133. On the surface of the nozzle top surface 151 on the injection preparation chamber 160 side, there are formed a swirling chamber 157 which is a thin disk-shaped space formed so as to surround the injection holes 152, and a swirling groove 156 extending from the tangential direction of the inner peripheral surface of the swirling chamber 157 to the cylindrical wall portion 153. Three swirling grooves 156 are connected to the inner peripheral surface of the swirling chamber 157 at equal intervals.

[0022] On the inner peripheral surface of the cylindrical wall portion 153, three fitting protrusions 155 for fitting with the center post 136 are formed at equal intervals. The intermediate wall portion 154 has the same inner diameter as the cylindrical wall portion 153 and is formed smaller than the outer diameter of the cylindrical wall portion 153.

[0023] The injection preparation chamber 160 is a space surrounded by the injection cylinder portion 133, the center post 136, and the nozzle tip 150, and has a main injection preparation chamber 161 formed around the center post 136 and a groove-shaped pre-injection preparation chamber 162 with the communication flow path 135 side opened, formed between the injection cylinder portion 133 and the intermediate wall portion 154.

[0024] The foam forming member 170 has a main body cylinder portion 171 formed in a cylindrical shape, a shielding plate 172 that shields the central portion of the main body cylinder portion 171, and a through hole 175 that communicates the front and rear of the shielding plate 172. One end of the inner peripheral surface of the main body cylinder portion 171 is configured to be fitted to the injection cylinder portion 133, and a foam forming space 173 surrounded by the injection cylinder portion 133, the nozzle tip 150, and the shielding plate 172 in the main body cylinder portion 171 is formed. A discharge port 174 is formed on the opposite side of the shielding plate 172 of the main body cylinder portion 171 from the foam forming space 173. On the inner peripheral surface of the main body cylinder portion 171 within the foam formation space 173, there is provided a straight - advance prevention piece 176 formed so as to interfere with the through - hole 175 on the axial direction side of the main body cylinder portion 171.

[0025] Next, regarding the agitation process of the foaming liquid S and the propellant LG within the actuator 130 and the spraying procedure outside the actuator 130 by the aerosol product 100 according to an embodiment of the present invention, it will be described with reference to FIGS. 9 to 12.

[0026] First, as shown in FIG. 9, by pressing the actuator 130 downward, the sealing of the inlet 122 by the seal member 123 and the flow path within the stem 121 is released, and the valve unit 120 (the first valve unit 120a, the second valve unit 120b) is opened. Due to the pressure of the gas phase portion of the propellant LG stored in the propellant storage portion 140, the liquid phase portion of the propellant LG is discharged from the second stem 121b through the dip tube 143, and at the same time, the foaming liquid storage portion 141 also receives pressure and the foaming liquid S is discharged from the first stem 121a. The foaming liquid S discharged from the first stem 121a flows into the first flow path 134a through the first connection flow path 137a as shown in FIG. 10, and the liquid phase of the propellant LG discharged from the second stem 121b flows into the second flow path 134b through the second connection flow path 137b. In this embodiment, a remaining - amount reduction member 142 is attached to the first inlet 122a within the foaming liquid storage portion 141, and it is configured to stabilize the discharge amount of the foaming liquid S and reduce the remaining amount until the end.

[0027] The liquid phase of the propellant LG flows through the second flow path 134b and into the first flow path 134a, and merges with the foaming liquid S. At this time, since the second flow path 134b is connected to the first flow path 134a on the side of the first connection flow path 137a rather than the communication flow path 135 within the first flow path 134a, the foaming liquid S and the liquid phase of the propellant LG violently collide within the first flow path 134a and are preliminarily agitated (emulsified) to become the foaming liquid M before reaching the spraying preparation chamber 160.

[0028] As shown in FIG. 11, the foam liquid M in the first flow path 134a flows into the injection preparation chamber 160 through the communication flow path 135. At this time, a part of the foam liquid M flows into the pre-injection preparation chamber 162 formed in a groove shape with the communication flow path 135 side open. The foam liquid M that has flowed into the pre-injection preparation chamber 162 can further stir (emulsify) the foamable liquid S and the liquid phase of the propellant LG by disturbing and stirring the flow of the foam liquid M in the pre-injection preparation chamber 162, and merges with another part of the foam liquid M that has flowed into the injection preparation chamber 160 from the communication flow path 135 and moves into the main injection preparation chamber 161.

[0029] As shown in FIG. 12, the foam liquid M that has moved into the main injection preparation chamber 161 reaches the swirling groove 156 while further finely stirring (emulsifying) the foamable liquid S and the liquid phase of the propellant LG, and flows into the swirling chamber 157 from the swirling groove 156. At this time, in the foam liquid M passing through the main injection preparation chamber 161, the liquid phase of the propellant LG has gradually started to slightly vaporize and expand, and has begun to form fine foam. Since the swirling groove 156 allows the foam liquid M to flow into the swirling chamber 157 from the tangential direction of the inner peripheral surface of the swirling chamber 157, the foamable liquid S and the propellant LG that make up the foam liquid M create a vortex in the swirling chamber 157 and are sprayed in a mist form from the injection hole 152 into the foam formation space 173 while being further finely stirred.

[0030] The foam liquid M sprayed into the foam formation space 173 violently foams while colliding with the inner peripheral surface of the main body cylinder portion 171 by the momentum of the injection to form foam, passes through the through hole 175, and is discharged out of the actuator 130 from the discharge port 174. At this time, on the inner peripheral surface of the main body cylinder portion 171 in the foam formation space 173, a straight-ahead prevention piece 176 is provided so as to interfere with the through hole 175 on the axial side of the main body cylinder portion 171. Therefore, it is possible to prevent the foam liquid M sprayed from the injection hole 152 from directly reaching the through hole 175, and it is possible to surely foam sufficiently in the foam formation space 173.

[0031] As described above, the foaming liquid S and the propellant LG are preliminarily stirred (emulsified) into the foaming liquid M before flowing into the injection preparation chamber 160 in the actuator 130, and while being further finely stirred (emulsified) in the injection preparation chamber 160, the foaming liquid M can be surely stirred to an emulsified state suitable for foaming, and the foaming liquid M can be sufficiently foamed in the foam formation space 173 to stably perform good foam discharge. In addition, since the communication flow path 135 is formed such that the flow path cross-sectional area of the communication flow path 135 is smaller than the sum of the flow path cross-sectional areas of the first flow path 134a and the second flow path 134b, there is no place where the flow path cross-sectional area expands until reaching the injection preparation chamber 160, and the pressure in the flow path is not easily released from the aerosol container 110 until reaching the injection preparation chamber 160, so that the vaporization of the propellant LG can be suppressed, and the propellant LG and the foaming liquid S can be sufficiently stirred (emulsified). Further, since the injection preparation chamber 160 communicates with the injection hole 152 via the swirling groove 156 and the swirling chamber 157, the foaming liquid M passes through a more complex flow path compared to the case where the injection preparation chamber 160 directly communicates with the injection hole 152, and the stirring (emulsification) of the foaming liquid S and the propellant LG can be further advanced.

[0032] In addition, since the second flow path 134b is formed such that the flow path cross-sectional area of the second flow path 134b is smaller than the flow path cross-sectional area of the first flow path 134a, the force of the liquid phase of the propellant LG to vaporize and expand can be suppressed, and it can be prevented that the foaming liquid M (foaming liquid S) freezes in the actuator 130 due to the heat of vaporization of the propellant LG, which hinders good foam discharge.

[0033] Note that for the aerosol product 100 according to an embodiment of the present invention, when the aerosol container 110 is ejected in an upright state, the liquid phase portion of the propellant LG is discharged into the actuator 130 through the dip tube 143, and the foaming liquid S is discharged as foam. However, by detaching the foam forming member 170 from 133 and directly opening the injection hole 152 outside the actuator 130, and ejecting the aerosol container 110 in an inverted state, the dip tube 143 constituting the foam / mist switching mechanism sucks up the gas phase portion of the propellant LG and discharges it into the actuator 130, and the foaming liquid S is dispersed in the gas phase of the propellant LG and ejected from the injection hole 152, so that good spray injection can also be carried out.

[0034] Here, Table 1 shows the experimental results regarding the influence of the difference in the flow path cross-sectional area ratio between the first flow path 134a and the second flow path 134b of the actuator 130 according to an embodiment of the present invention on foam discharge and spray injection, in the shape of the present invention. Also, as a comparative object, as shown in FIGS. 13 and 14, Table 1 shows the experimental results using an actuator 230 configured in a comparative shape in which the first flow path 234a and the second flow path 234b directly flow into the injection preparation chamber 260, respectively. In the comparative-shaped actuator 230, a nozzle tip 150 is attached to an injection cylinder portion 233 facing upward of the main body portion 231, and the first flow path 234a and the second flow path 234b are separately connected to the injection preparation chamber 260 via communication flow paths 235 (first communication flow path 235a, second communication flow path 235b), respectively. In addition, the description of the same configuration as that of the actuator 130 is omitted.

[0035] The compositions of the foaming liquid and the propellant used in the experiment are as follows. Foaming liquid: 2% aqueous solution of Mydol 12 (Kao Corporation) Propellant: LPG (0.25 MPa) Note that the specifications of the foaming liquid S are not limited to the foaming liquid used in the above experiment. As an example, there are facial cleansers, cleansing agents, shaving agents, hair growth agents, hand soaps, styling agents, etc. as described in Tables 2 to 7. However, as long as it is used for general foam discharge applications, the uses and compositions of the foaming liquids that can be used in the present invention are not limited to this. Also, the pressure of the propellant LG is not limited to 0.25 MPa. Examples of the type of propellant LG include propane, butane, pentane, or liquefied petroleum gas containing these, dimethyl ether, hydrofluoroolefin, hydrofluorocarbon, etc. A mixture of multiple types of these may also be used.

[0036] [Table 1] [Table 2] [Table 3] [Table 4] [Table 5] [Table 6] [Table 7]

[0037] As shown in Table 1, when the ratio of the flow path cross-sectional areas of the first flow path 134a and the second flow path 134b was 1:1, the foaming liquid M was likely to freeze and good foam discharge was not achieved. Also, when the ratio of the flow path cross-sectional areas of the first flow path 134a and the second flow path 134b was 20:1, the foaming liquid S could not be sufficiently foamed. When the ratio of the flow path cross-sectional areas of the first flow path 134a and the second flow path 134b was 3:1, 5:1, 8:1, or 15:1, the foaming liquid M did not freeze, and it was possible to supply the propellant LG in an amount sufficient to sufficiently foam the foaming liquid S in the foaming liquid M, and stable and good foam discharge could be carried out. Regarding the atomizing injection, good results were shown for any ratio of the flow path cross-sectional areas.

[0038] In the comparative shape, atomizing injection showed good results for any ratio of the flow path cross-sectional areas, but in the case of foam discharge, the foaming liquid S could not be sufficiently foamed.

[0039] From the above experimental results, it was found that the suitable range of the ratio of the flow path cross-sectional areas of the first flow path 134a and the second flow path 134b for carrying out good foam discharge is within the range from 3:1 to 15:1.

[0040] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims.

[0041] In the above-described embodiment, the aerosol product has been described as a so-called dual valve type having two valve units in one aerosol container. However, the configuration of the present invention is not limited to this. For example, the number of valve units may be three or more, a plurality of storage spaces may be configured with a plurality of aerosol containers each having one valve unit, or a plurality of inlets and a seal member corresponding to each of the plurality of inlets may be provided in one valve unit. Also, in the above-described embodiment, it has been described that a remaining amount reducing member is attached to the first inlet and a dip tube is attached to the second inlet. However, the configurations inside the foaming liquid storage portion and the propellant storage portion are not limited to this. For example, it is not necessary to attach a remaining amount reducing member or a dip tube to the inlet.

[0042] In the above-described embodiment, it has been described that a center post is provided inside the injection cylinder portion, and three fitting protrusions that can be fitted to the center post are provided on the cylindrical wall portion of the nozzle tip. However, the configuration of the actuator is not limited to this. For example, the center post and the fitting protrusions may not be provided, or four or more fitting protrusions may be provided. In the above-described embodiment, it has been described that the nozzle tip has an intermediate wall portion extending from the end of the cylindrical wall portion, and the injection preparation chamber has a main injection preparation chamber formed around the center post and a groove-shaped pre-injection preparation chamber formed between the injection cylinder portion and the intermediate wall portion with the communication flow path side open. However, the configuration of the injection preparation chamber is not limited to this. For example, the intermediate wall portion may not be provided, and the pre-injection preparation chamber may not be formed.

[0043] In the above-described embodiment, it has been described that the nozzle tip is provided with a turning groove and a turning chamber on the nozzle top surface. However, the configuration of the nozzle top surface is not limited to this. For example, the turning groove may be provided in a cross shape intersecting the central axis of the injection hole without providing the turning chamber, or the turning groove and the turning chamber may not be provided. In the above-described embodiment, it has been described that the foam forming member has a shielding plate and a straight - advancing prevention piece inside the cylindrical main body cylinder portion. However, the configuration of the foam forming member is not limited to this. For example, the straight - advancing prevention piece may not be provided, or a mesh - shaped foam forming portion may be provided without providing the shielding plate, and the foaming liquid may be configured to be atomized and sprayed toward the foam forming portion. As long as it is a configuration for foaming the foaming liquid containing the foamable liquid, a known configuration can be used.

Explanation of Reference Numerals

[0044] 100 ··· Aerosol product 110 ··· Aerosol container 111 ··· Mounting cup 120 ··· Valve unit 120a ··· First valve unit 120b ··· Second valve unit 121 ··· Stem 121a ··· First stem 121b ··· Second stem 122 ··· Inlet 122a ··· First inlet 122b ··· Second inlet 123 ··· Sealing member 130, 230 ··· Actuator 131 ··· Body part 132 ··· Stem fitting part 132a ··· First stem fitting part 132b ··· Second stem fitting part 133 ··· Injection cylinder part 134 ··· Flow path 134a ··· First flow path 134b ··· Second flow path 135 ··· Communication flow path 136 ··· Center post 137 ··· Connection flow path 137a ··· First connection flow path 137b ··· Second connection flow path 140 ··· Propellant storage part 141 ··· Foaming liquid storage part 142 ··· Remaining amount reduction member 143 ··· Dip tube 150 ··· Nozzle tip 151 ··· Nozzle top surface 152 ··· Injection hole 153 ··· Cylindrical wall part 154 ··· Intermediate wall part 155 ··· Fitting protrusion 156 ··· Swivel groove 157 ··· Swivel chamber 160 ··· Injection preparation chamber 161 ··· Main injection preparation chamber 162 ··· Pre-injection preparation chamber 170 ··· Foam forming member 171 ··· Body cylinder part 172 ··· Shielding plate 173 ··· Foam forming space 174 ··· Outlet 175 ··· Through hole 176 ··· Straight - advance prevention piece LG ··· Propellant S ··· Foaming liquid M ··· Foaming solution

Claims

1. An aerosol product comprising a valve unit having a stem protruding from an aerosol container, and an actuator fitted to the stem, The aerosol container has a plurality of partitioned storage spaces, inlets corresponding to the storage spaces, and one or more valve units each having a seal member for opening and closing the inlet, At least one of the plurality of storage spaces is a foamable liquid storage section that stores an object including a foamable liquid, At least one other of the plurality of storage spaces is a propellant storage section that stores an object including a propellant constituted by a liquefied gas, the inlet includes a first inlet corresponding to the foamable liquid containing section and a second inlet corresponding to the propellant containing section, The stem includes a first stem corresponding to the first inlet and a second stem corresponding to the second inlet, the actuator has a first stem fitting portion that fits into the first stem, a second stem fitting portion that fits into the second stem, a first flow path that communicates with the first stem fitting portion, a second flow path that communicates with the second stem fitting portion, an injection preparation chamber, a cylindrical foam formation space, a discharge port, an injection hole that communicates between the injection preparation chamber and the foam formation space, and a through hole that communicates between the foam formation space and the discharge port, The injection preparation chamber is connected to the first flow passage via a communication passage, An aerosol product, characterized in that the second flow path is connected to an intermediate portion of the first flow path.

2. 2. The aerosol product according to claim 1, wherein the cross-sectional area of ​​the communication flow passage is smaller than the sum of the cross-sectional areas of the first flow passage and the second flow passage.

3. 2. The aerosol product according to claim 1, wherein the cross-sectional area of ​​the communication flow passage is smaller than the cross-sectional area of ​​the first flow passage.

4. 2. The aerosol product of claim 1, wherein a cross-sectional area of ​​the second flow passage is smaller than a cross-sectional area of ​​the first flow passage.

5. 5. The aerosol product of claim 4, wherein a ratio of a cross-sectional area of ​​the first flow passage to a cross-sectional area of ​​the second flow passage is in the range of 3:1 to 15:

1.

6. 2. The aerosol product according to claim 1, wherein the communication flow passage is connected to the ejection preparation chamber at a position away from a central axis of the ejection preparation chamber.

7. The injection preparation chamber includes a main injection preparation chamber formed to communicate between the communication passage and the injection hole, and a pre-injection preparation chamber formed at a position opposite to the communication passage, The aerosol product according to claim 1, wherein the pre-injection preparation chamber is formed in a recessed groove shape that is open in a direction facing the communication flow passage.

8. 8. The aerosol product according to any one of claims 1 to 7, a foam-forming member having the foam-forming space, the discharge port, and the passage hole is detachably provided on the actuator; The aerosol product is characterized in that the aerosol container is provided with a foam mist switching mechanism that can switch between sucking up the liquid phase and the gas phase of the propellant.

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