JP6450812B2 - Aerosol container - Google Patents

Description

The present invention relates to an aerosol container.

The aerosol container includes an outer container and an aerosol valve that closes the outer container. This aerosol container is sold as an aerosol product by filling the outer container with the contents and propellant. Also known is a double aerosol container comprising an outer container, an inner container accommodated therein, and an aerosol valve for closing the outer container and the inner container. A double aerosol container becomes a double aerosol product by filling the contents in the inner container and filling the space between the inner container and the outer container with the propellant.
As a method of filling the propellant of such an aerosol product or a double aerosol product, an under-cup filling method in which the propellant is filled from between the aerosol valve and the outer container immediately before the aerosol valve is fixed to the outer container, or A method is known in which a filling valve is provided at the bottom of the outer container and filling is performed from the filling valve.
In recent years, an aerosol container using an external container made of a synthetic resin that can be used for various purposes has been developed. For example, Patent Document 1 discloses a double aerosol container including an outer container made of a synthetic resin, an inner container accommodated in the outer container, and a valve assembly for closing them. At this time, it has been proposed to seal between the outer container and the aerosol valve with an O-ring. Patent Document 2 discloses an aerosol container in which an aerosol valve is attached to the mouth of a container body composed of an outer container and an inner bag.

Japanese Patent Application No. 2011-182055 JP 2002-205780 A

However, the double aerosol container of Patent Document 1 has a problem that the O-ring becomes an obstacle when filling the undercup. Further, in the aerosol container of Patent Document 2, the inner bag is sandwiched between the outer container and the housing, and there is a problem that the inner bag becomes an obstacle when filling the under cup. Furthermore, when an external container made of synthetic resin is used, the pressure resistance of the external container becomes weaker as the temperature rises, so that the valve assembly may be skipped when the outer container is deformed.
Therefore, an object of the present invention is to provide an aerosol container that can be easily filled with a propellant by an under-cup filling method, and the valve assembly cannot fly even if the outer container is deformed.

The aerosol container of the present invention is an aerosol container comprising an outer container and a valve assembly for closing the outer container, wherein the valve assembly is a valve holder, an aerosol valve held by the valve holder, and the valve A mountain cover for fixing the holder to the external container, the mountain cover has a cover portion that covers the valve holder and the aerosol valve, and the cover portion is provided with a notch for positioning. It is characterized by that.

Moreover, it is preferable that the said notch cuts the cylindrical cover part in the perpendicular direction. Furthermore, it is preferable that a planar shape of the cover portion is an arc shape. It is preferable that two aerosol valves are provided and one notch portion is provided.

It is preferable that the outer container has a cylindrical mouth portion, and the mountain cover is fixed by caulking to the outer periphery of the mouth portion of the outer container.

A first aspect of the aerosol container is an aerosol container comprising an outer container having a cylindrical opening and a valve assembly for closing the outer container, and the valve assembly is inserted along the inner surface of the opening. A plug portion, a flange portion formed on the upper end of the plug portion with a diameter larger than that of the plug portion, and disposed between the opening portion and a seal between the inner surface of the opening portion and the outer surface of the plug portion. And an O-ring, and the O-ring is held on the top of the stopper. Here, the upper part of the stopper is the upper part, preferably the upper end, of the cylindrical part inserted into the opening of the outer container when the valve assembly is attached to the outer container. When held slightly above the container, the O-ring is disposed on the top of the stopper so that a propellant filling passage can be secured between the inside and outside of the outer container. It is arranged so as not to contact the upper end opening.
A second aspect of the aerosol container is an aerosol container comprising an outer container having a cylindrical opening and a valve assembly for closing the outer container, and the valve assembly is inserted along the inner surface of the opening. A plug portion, a flange portion formed on the upper end of the plug portion with a diameter larger than that of the plug portion, and disposed between the opening portion and a seal between the inner surface of the opening portion and the outer surface of the plug portion. And an inner groove extending downward from the upper end to above the O-ring is formed on the inner surface of the opening of the outer container.
In the first or second aspect of the aerosol container, the stopper part or the flange part includes a support part that contacts the upper end of the opening part of the outer container and supports the valve assembly above the outer container, By deforming the support portion and inserting the plug portion into the outer container, the inner surface of the opening portion of the outer container and the outer surface of the plug portion may be sealed by an O-ring.
A third aspect of the aerosol container is an aerosol container comprising an outer container having a cylindrical opening and a valve assembly that closes the outer container, and the outer container communicates with the upper surface of the opening inside and outside. A flange having a communication passage, the valve assembly being inserted into the opening, and having a diameter larger than that of the stopper at the upper end of the stopper, and disposed on the opening And a gasket that seals between the upper surface of the opening of the outer container and the flange portion.
In the aerosol container according to the third aspect, the outer container preferably has a seal protrusion formed in an annular shape on the upper surface of the opening, and a passage that penetrates the seal protrusion in the radial direction.
It is preferable to have a flexible inner container housed in the outer container and a valve assembly for closing the inner container and the outer container.
It is preferable that the outer container has an inner groove extending downward from the upper end on the inner surface of the opening.
It is preferable that the outer container of any of the above aerosol containers has an outer groove extending downward from the upper end on the outer surface of the opening.
A method for pressurizing an aerosol product in which an aerosol container is filled with a propellant according to the first aspect, wherein a part of a stopper is inserted into an opening of an external container so that an O-ring is positioned above the opening. A step of holding the valve assembly, a step of filling the outer container with the propellant from between the outer container and the valve assembly, and lowering the valve assembly to bring the O-ring into contact with the inner surface of the opening. What consists of the process of sealing is preferable.
A method for pressurizing an aerosol product in which an aerosol container of the second form is filled with a propellant, wherein a part of a stopper is inserted into an opening of an outer container, and an O-ring is positioned above a lower end of an inner groove. A step of holding the valve assembly, a step of filling the outer container with a propellant from between the outer container and the valve assembly, and lowering the valve assembly to bring the O-ring into contact with the inner surface of the opening, What consists of the process of sealing an outer container is preferable.
A method for pressurizing an aerosol product in which an aerosol container is filled with a pressurizing agent, wherein a part of the stopper is inserted into the opening of the outer container, and the gasket is more than the communication path on the upper surface of the opening. A step of holding the valve assembly so as to be positioned above, a step of filling the outer container with a propellant from between the outer container and the valve assembly, and lowering the valve assembly to close the communication path with the gasket, What consists of the process of sealing is preferable.

The aerosol container is an aerosol container composed of an outer container having a cylindrical opening and a valve assembly for closing the outer container, and the valve assembly is inserted along the inner surface of the opening. A flange portion formed on the upper end of the plug portion having a diameter larger than that of the plug portion and disposed on the opening portion; and an O-ring for sealing between the inner surface of the opening portion and the outer surface of the plug portion. And the O-ring is held at the upper part of the stopper, so that the O-ring does not get in the way when filling the propellant. In other words, when filling the propellant, the valve assembly is held upward so that there is a gap between the outer container and the flange, and the space in the outer container is filled from between the outer container and the valve assembly. Is held on the outer periphery of the upper part or the upper end of the stopper part of the valve assembly, the O-ring and the inner surface of the opening of the outer container can be separated, and the O-ring does not interfere with the filling of the propellant. Furthermore, since the propellant can be filled with a part of the plug part of the valve assembly inserted into the opening of the outer container, the valve assembly is prevented from wobbling by the insertion part of the plug part, and the gap between the O-ring and the opening is made. It is ensured and can be reliably filled with the propellant. After filling the propellant, the O-ring can be placed between the outer container and the valve assembly by simply lowering the valve assembly, and can be sealed in a very short time. Therefore, the filling of the propellant can be performed stably.
In addition, the aerosol container is heated to 60 ° C or higher, such as in direct sunlight, in the car, or around a fan heater, so that the pressure resistance of the external container is weakened and the cylindrical opening is expanded by internal pressure. When deformed, the sealing property between the O-ring held at the upper part of the stopper and the inner surface of the outer container is weakened, and the propellant can be discharged to the outside through a path opposite to that at the time of filling. As a result, the propellant can be released before the valve assembly comes off.

A second aspect of the aerosol container is an aerosol container comprising an outer container having a cylindrical opening and a valve assembly for closing the outer container, and the valve assembly is inserted along the inner surface of the opening. A plug portion formed on the upper end of the plug portion with a diameter larger than that of the plug portion, and disposed on the opening portion; and an inner peripheral surface of the opening portion and an outer peripheral surface of the plug portion. And an inner groove extending downward from the upper end to above the O-ring is formed on the inner surface of the opening of the outer container. When the valve assembly is held upward so that there is a gap between the parts and the space S in the outer container is filled from between the outer container and the valve assembly, the O-ring is located in the inner groove, and the propellant passageway Secured by inner groove That. Therefore, the O-ring does not get in the way. In addition, since the propellant can be filled with a part of the plug part of the valve assembly inserted into the opening of the external container, the plug part insertion part prevents the valve assembly from wobbling and secures the propellant passage. The propellant can be reliably filled. After filling the propellant, the O-ring can be placed between the outer container and the valve assembly by simply lowering the valve assembly, and can be sealed in a very short time. Therefore, the filling of the propellant can be performed stably.
On the other hand, the O-ring is in contact with the lower part of the inner surface of the opening (preferably the inner surface of the neck that is thinner than the mouth), but the inner surface of the opening is the initial stage when the strength of the outer container starts to decrease. Therefore, the initial deformation changes the positional relationship between the O-ring and the inner surface (inner groove) of the opening, releases the sealing property, heats the aerosol container, and greatly reduces the strength of the container body. Before, the propellant is discharged to the outside through the inner groove.
In the first or second aspect of the aerosol container, the plug portion or the flange portion includes a support portion that contacts the upper end of the opening of the outer container and supports the valve assembly above the outer container. When the gap between the inner surface of the opening of the outer container and the outer surface of the stopper is sealed by an O-ring by deforming the support and inserting the stopper into the outer container, The propellant filling passage can be easily secured, and the productivity is high.

A third aspect of the aerosol container is an aerosol container comprising an outer container having a cylindrical opening and a valve assembly for closing the outer container, and the outer container communicates with the upper surface of the opening. The valve assembly is formed with a cylindrical plug portion inserted into the opening portion, an upper end of the plug portion having a diameter larger than that of the plug portion, and disposed on the opening portion. Since it has a flange and a gasket that seals between the upper surface of the opening and the flange, when filling the propellant, the valve assembly is moved upward so that a gap is formed between the outer container and the gasket. The propellant is filled through the communication path when the space S in the outer container is filled from between the outer container and the valve assembly. Furthermore, since the propellant can be filled with a part of the plug part of the valve assembly inserted into the opening of the external container, the insertion part of the plug part prevents the valve assembly from wobbling, and the gap between the plug part and the opening part is prevented. It is ensured and can be reliably filled with the propellant. After filling the propellant, the O-ring can be placed between the outer container and the valve assembly by simply lowering the valve assembly, and can be sealed in a very short time. Therefore, the filling of the propellant can be performed stably.
On the other hand, even when the aerosol container is heated and the outer container is deformed, the sealing performance of the gasket is weakened, the communication path is opened again, and the propellant can be released before the valve assembly comes off.
In this third aspect, when the outer container has a seal protrusion formed in an annular shape on the upper surface of the opening and a passage penetrating the seal protrusion in the radial direction, The protrusion improves the sealing performance of the gasket during normal operation.
When the outer container has an inner groove extending downward from the upper end on the inner surface of the upper end opening, the inner groove can guide the propellant to the passage when the aerosol container is heated and the outer container is deformed.

When the external container has an outer groove extending from the upper end downwardly to the outer surface of the top opening, when the aerosol container was deformed outer container is heated, the propellant is guided to the upper surface of the outer container It can be easily released to the outside.

It is sectional drawing which shows one Embodiment of the double aerosol container of this invention. FIG. 2a is an enlarged view of a part of the double aerosol container of FIG. 1, and FIG. 2b is an enlarged view. 3a and 3b are plan views and sectional views taken along line XX of the valve holder of FIG. 1, FIG. 3c is a sectional view of the aerosol valve, and FIGS. 3d and 3e are sectional views and planes of the mountain cover of FIG. FIG. FIG. 4A is a process diagram showing a manufacturing process of the double aerosol container of FIG. 1, and FIG. 4B is a state diagram showing a state when the outer container of the double aerosol container of FIG. 1 is deformed. 5a is a plan view showing another embodiment of the double aerosol container of the present invention, and FIGS. 5b to 5e are a plan view, a bottom view, and a front sectional view showing a valve holder used in the double aerosol container. FIG. 5f is a plan view showing still another embodiment of the double aerosol container of the present invention. 6a is a partial cross-sectional view showing another embodiment of the double aerosol container of the present invention, FIG. 6b is a partially enlarged view thereof, and FIG. 6c shows a manufacturing process of the double aerosol container of FIG. 6a. FIG. 6D is a process diagram showing a state when the outer container of the double aerosol container of FIG. 6A is deformed. FIG. 7a is a partial sectional view showing still another embodiment of the double aerosol container of the present invention, FIG. 7b is a process diagram showing the manufacturing process thereof, and FIG. 7c is a manufacturing process of the other embodiment. FIG. 7d is a process diagram showing a manufacturing process of still another embodiment. FIG. 8a is a partial cross-sectional view showing still another embodiment of the double aerosol container of the present invention, and FIG. 8b is a process drawing showing the manufacturing process thereof. FIG. 9a is a side sectional view showing still another embodiment of the double aerosol container of the present invention, and FIG. 9b is a sectional view taken along the line YY. FIGS. 10a and 10b are partial cross-sectional views showing still another embodiment of the double aerosol container of the present invention, and FIG. 10c is a partial cross-sectional view showing still another embodiment of the aerosol container of the present invention. . FIG. 11a is a partial sectional view showing an embodiment of the second aspect of the double aerosol container of the present invention, and FIG. 11b is a partially enlarged view thereof. 12a and 12b are a plan view and a side sectional view showing an outer container of the double aerosol container of FIG. 11, and FIGS. 12c and 12f are a plan view and a side sectional view in which a part thereof is enlarged, and FIG. e is a partially enlarged plan view showing another external container that can be used for the double aerosol container of FIG. 11, and FIG. 12g shows another external container that can be used for the double aerosol container of FIG. It is a partially expanded side sectional view shown. 13a and 13b are a plan view and a side sectional view showing still another external container that can be used for the double aerosol container of FIG. 11, and FIGS. 13c and 13d are used for the double aerosol container of FIG. It is the top view and side surface sectional view which show the other external container which can do. 14a and 14b are process diagrams showing the manufacturing process of the double aerosol container of FIG. 11, respectively. FIG. 14c is a state diagram showing a state when the outer container of the double aerosol container of FIG. 11 is deformed. 14d and e are process diagrams showing a manufacturing process of still another double aerosol container of the present invention. FIGS. 15a and 15b are process charts showing manufacturing steps of still another embodiment of the second aspect of the double aerosol container of the present invention. FIG. 16a is a partial cross-sectional view showing still another embodiment of the second aspect of the double aerosol container of the present invention, and FIG. 16b is a process drawing showing its production process. FIG. 17a is a partial cross-sectional view showing still another embodiment of the second aspect of the double aerosol container of the present invention, and FIG. 17b is a process drawing showing its production process. 18a is a side sectional view showing still another embodiment of the double aerosol container of the present invention, and FIG. 18b is a sectional view taken along the line ZZ. 19a and 19b are partial sectional views showing other embodiments of the second aspect of the double aerosol container of the present invention, and FIG. 19c is a partial view showing still another embodiment of the aerosol container of the present invention. It is sectional drawing. 20a is a partial cross-sectional view showing an embodiment of the third aspect of the double aerosol container of the present invention, and FIG. 20b is a partially enlarged view thereof. 21a and b are a plan view and a side sectional view showing the outer container of the double aerosol container of FIG. 20a. FIG. 22a is a process diagram showing a manufacturing process of the double aerosol container of FIG. 20, and FIG. 22b is a state diagram showing a state when the outer container of the double aerosol container of FIG. 20 is deformed. FIGS. 23a and 23b are partial sectional views showing other embodiments of the third aspect of the double aerosol container of the present invention, and FIG. 23c is a partial view showing still another embodiment of the aerosol container of the present invention. It is sectional drawing. FIG. 24a is a plan view of an embodiment of an O-ring that can be used in a double aerosol container, FIG. 24b is a side cross-sectional view of the double aerosol container using the O-ring, and FIG. FIG.

A double aerosol container 10 of FIG. 1 includes an outer container 11, a first inner container 12 and a second inner container 13 accommodated in the outer container, an outer container 11, a first inner container 12, and a second inner container. And a valve assembly 14 for closing 13. Further, an injection member 15 for discharging the contents may be attached by operating the aerosol valve of the valve assembly 14.
As shown in FIG. 2 b, the valve assembly 14 has a cylindrical plug portion 17 inserted along the inner surface 11 f of the opening of the outer container 11, and a diameter larger than that of the plug portion at the upper end of the plug portion 17. A flange portion 18 formed on the opening portion and an O-ring 19 that seals between the opening portion and the plug portion are provided. An annular recess 20 that holds an O-ring 19 is formed on the outer periphery of the upper portion or the upper end of the stopper portion 17. The O-ring 19 seals between the outer container 11 and the valve assembly 14.
Returning to FIG. 1, the first inner container 12 and the second inner container 13 of the double aerosol container 10 are filled with the first contents A and the second contents B, respectively, and between the outer container 11 and both inner containers. By filling the space S with the propellant P, a double aerosol product is obtained. Examples of the contents filled in the inner container include a two-component reactive preparation such as a two-component hair dye and a two-component perm. Examples of the propellant include compressed gas such as nitrogen gas, compressed air, carbon dioxide gas and nitrous oxide, and liquefied gas such as liquefied petroleum gas, dimethyl ether and hydrofluoroolefin.

As shown in FIGS. 1, 2a, and b, the outer container 11 has a bottom 11a, a cylindrical body 11b, a tapered shoulder 11c, a cylindrical neck 11d, and a thick mouth 11e at its upper end. A pressure vessel made of synthetic resin. The neck portion 11d and the mouth portion 11e are arranged coaxially and have the same inner diameter. That is, the outer peripheral surface of the mouth portion 11e protrudes radially outward from the outer peripheral surface of the neck portion 11d. In this embodiment, the inner surfaces of the neck portion 11 d and the mouth portion 11 e constitute the inner surface 11 f of the cylindrical opening of the outer container 11. The O-ring 19 comes into contact with the inner surface 11f of the opening.
The outer container 11 is formed by biaxial stretch blow molding in which air is blown into the inside while expanding a bottomed cylindrical parison made of a light-transmitting synthetic resin such as polyethylene terephthalate, nylon, and polypropylene in the axial direction. ing. However, a cylindrical parison may be molded by direct blow molding. The outer container 11 may be translucent, and in that case, the remaining amount and state of the contents can be confirmed, which is preferable. Further, carbon or silica may be deposited on the inner surface and / or outer surface of the outer container 11 in order to prevent the permeation of the propellant. Furthermore, in order to prevent deterioration of the inner container due to sunlight, an ultraviolet absorber may be added to the synthetic resin and molded.

As shown in FIG. 1, the first inner container 12 includes a flexible first bag body 12 a and a connecting member 16 attached to the opening. The second inner container 13 includes a flexible second bag 13a and a connecting member 16 attached to the opening.
The first bag body 12a and the second bag body 13a are formed by laminating two sheets or folding one sheet, and then bonding the peripheral edges together by heat welding or adhesion. The first bag body 12a and the second bag body 13a may be made of the same material or different materials. In that case, each may have translucency. It is determined appropriately according to the contents filled in each inner container or according to its use.
As the sheets of the first bag body 12a and the second bag body 13a, a single layer or a laminated resin made of polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), nylon (NY), eval (EVOH), etc. Sheet, colored resin sheet obtained by coloring the resin sheet, vapor-deposited resin sheet obtained by vapor-depositing silica (Si), alumina (Al ₂ O ₃ ), carbon (C), etc. on the resin sheet, metal foil such as aluminum (Al foil) Examples thereof include a sheet or a laminated sheet obtained by laminating at least two sheets selected from a resin sheet, a colored resin sheet, a vapor deposition resin sheet, and a metal foil sheet. As an opaque laminated sheet, what laminated | stacked metal foil sheets with the resin sheet or the vapor deposition resin sheet, such as PE / Al foil / PE, PE / Al foil / PET, PE / Al foil / PET / PE, is preferable. Moreover, as a transparent laminated sheet, PE / EVOH / PE, PE / NY / PE, and PE / EVOH / Si / PE are preferable.

  The connecting member 16 is common to the first inner container 12 and the second inner container 13. The connecting member 16 has a sticking portion 16a for sticking the opening of each bag body in the lower portion, and is a cylindrical member having a connecting portion 16b for connecting to the valve assembly in the upper portion. Examples of the material of the connecting member 16 include synthetic resins such as polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, nylon, and polyacetal, and metals such as stainless steel.

  As shown in FIG. 2a, the valve assembly 14 includes a valve holder 21 that closes the outer container 11, two independent aerosol valves 22 that are held by the valve holder 21 and each close the inner container 12, and the valve holder 21 and the aerosol. The aerosol valve 22 is fixed to the valve holder 21 so as to cover the valve 22, and the mountain cover 23 is configured to fix the valve holder 21 to the opening of the external container 11. The valve assembly 14 is preferably used in an integrated manner, for example, by fitting the valve holder 21 to the mountain cover 23 or by caulking the side surface of the mountain cover 23 in the direction of the valve holder 21.

As shown in FIGS. 3a and 3b, the valve holder 21 includes a cylindrical base portion 26, two cylindrical holder portions 27 formed so as to vertically penetrate the base portion, and an upper end surface of the base portion. And one positioning protrusion 28 extending toward.
The base portion 26 is provided with the plug portion 17, the flange portion 18, and the O-ring 19 described above. Specifically, the base portion 26 is provided between the cylindrical plug portion 17 inserted along the inner surface 11 f of the opening of the outer container 11, the columnar lid portion 30 disposed on the upper portion of the outer container 11, and the gap therebetween. And a flange portion 18 projecting radially outward. And the flange part 18 is arrange | positioned on the opening | mouth part 11e of the outer container 11 (refer FIG. 2). An annular recess 20 that holds an O-ring 19 is formed on the outer periphery of the upper end of the stopper portion 17. The upper surface of the annular recess 20 and the lower surface of the flange portion 18 are continuous. In this embodiment, the annular recess 20 is provided on the outer periphery of the upper end of the stopper, but the outer peripheral surface of the stopper 17 is positioned so that the O-ring 19 is positioned above the upper end of the outer container 11 when filling the undercup described later. What is necessary is just to be formed in the upper part. Preferably, the bottom of the annular recess 20 is formed within 8 mm, particularly within 5 mm from the upper end of the stopper. If it is within 8 mm, the holding of the valve assembly is not complicated when the under cup is filled, and after filling the propellant, the valve assembly 14 can be easily attached to the external container 11 and the propellant is lost. Can be reduced.

  The holder portion 27 has a central hole 31 that passes through the base portion 26 (the plug portion 17 and the lid portion 30), an annular locking groove 32 provided on the outside thereof, and a diameter that decreases downward in the central hole 31. And an annular stepped portion 33 provided on the surface.

  The protrusion 28 is a protrusion whose outer shape protrudes from the upper surface of the lid portion 30 of the base portion 26. This protrusion 28 is a direction (position) alignment means and a direction confirmation means of the valve assembly and the aerosol container.

The aerosol valves 22 are respectively connected to the connecting members 16 of the first inner container 12 and the second inner container 13, and control the flow of contents sent out from the respective inner containers. Specifically, as shown in FIG. 3c, the aerosol valve 22 includes a cylindrical housing 35 having a connecting member 21 connected to a lower portion thereof, a stem 36 inserted into the housing 35 so as to be movable up and down, and the stem. A stem rubber 37 that closes the stem hole 36a, a spring 38 that constantly biases the stem 36 upward, and a cover 39 that covers the entire housing 35.
In the aerosol valve 22, the stem 36 and the stem rubber 37 are fixed to the housing 35 by caulking the upper side surface 39 a of the cover 39 in the direction of the housing 35, and the stem hole 36 a is always sealed by the stem rubber 37. The lower end 39b of the cover extends straight downward. An annular recess 35 a that holds the ring-shaped seal member 29 is formed on the outer periphery of the housing 35. The seal member 29 seals between the aerosol valve 22 and the valve holder 21. The sealing material 29 has a rectangular cross section, but an O-ring having a circular cross section can be used as shown in FIG.
The aerosol valve 22 is inserted into the center hole 31 of the holder portion 27 of the valve holder 21. At that time, the lower end 39b of the cover 39 of the aerosol valve 22 is inserted into the locking groove 32, the seal member 29 of the aerosol valve 22 is brought into contact with the step 33, and the space between the center hole 31 and the aerosol valve 22 is sealed. .

As shown in FIGS. 3d and 3e, the mountain cover 23 fixes the cylindrical cover portion 23a that covers the valve holder 21 and the aerosol valve 22, the flange portion 18 of the valve holder 21, and the mouth portion 11e of the outer container 11. And a cylindrical fixing portion 23b having a diameter larger than that of the cover portion 23a.
The cover part 23a has three insertion holes 23c through which the stem of the aerosol valve and the positioning projection are passed on the upper bottom. The cover portion 23a is pressed downward so that the lower surface of the upper base and the upper surface of the cover 39 of the aerosol valve 22, and the lower surface of the upper base and the upper surface of the base portion 26 in the vicinity of the protrusion 28 are in contact with each other. The dent 23d is formed on the upper surface.

The double aerosol container 10 configured in this manner facilitates filling of the propellant into the space S between the outer container 11 and both inner containers. Specifically, as shown in FIG. 4 a, the valve assembly is held upward so that a gap is formed between the outer container 11 and the flange portion 18, and between the mouth portion 11 e of the outer container 11 and the mountain cover 23, the outer container 11 is filled with propellant through the opening 11e of the valve 11 and the flange 18 of the valve assembly 14 and between the inner surface 11f of the outer container 11 and the outer surface of the plug 17 of the valve assembly 14 (under cup filling). In the direction of the arrow in FIG. At this time, since the O-ring 19 is held on the upper outer periphery or the upper end outer periphery of the plug portion 17 of the valve assembly 14, the O-ring 19 and the inner surface 11f of the outer container can be separated from each other. Does not interfere with filling. Further, even if the filling pressure of the propellant is applied to the O-ring, the O-ring is pressed against the annular recess 20, so that the propellant flow is not hindered. After filling with the propellant, the O-ring 19 is disposed between the inner surface 11f of the outer container 11 and the plug portion 17 of the valve assembly 14 by slightly lowering the valve assembly 14, and the gap can be sealed. Therefore, the filled propellant can be filled with high accuracy without escaping outside. The mountain cover 23 can be fixed by caulking the lower end of the mountain cover 23 to the outer periphery of the lower end of the mouth portion 11e of the external container after filling with the propellant, and the fixing operation can be facilitated. Examples of the method for holding the valve assembly include holding the integrated valve assembly with the holder of the filling device and holding it with the lower end of the inner container.
After the valve assembly 14 is fixed to the outer container 11, each stem 36 is pushed down to discharge air remaining in the first inner container 12 and the second inner container 13, and the contents are discharged from each stem. By filling the 12 and the second inner container 13, a double aerosol product is obtained.

  Further, the double aerosol container 10 releases the propellant to the outside without the valve assembly 14 coming off when the aerosol container is heated due to an increase in ambient temperature or the like and the pressure resistance of the outer container 11 becomes weak and deforms. be able to. Specifically, as shown in FIG. 4b, when the mouth portion 11e is deformed so as to bulge outward due to heat and pressure of the propellant from the shoulder portion 11c of the outer container 11, O held by the upper end of the plug portion 17 is retained. The sealing performance between the ring 19 and the inner surface 11f of the outer container 11 is weakened, and the propellant is likely to be discharged to the outside through a path opposite to that at the time of filling. As a result, the propellant can be released before the valve assembly 14 comes off. 2b and 4b, an outer surface of the mouth portion 11e of the outer container 11 may be provided with a vertical groove 11h extending downward from the upper end. This further promotes the release of the propellant. A plurality of such vertical grooves 11h may be provided in an annular shape. The vertical groove 11h also serves as a filling passage for the filler when filling the undercup.

The double aerosol container 10a of FIG. 5a is obtained by notching a part of the valve assembly 14 in place of the positioning protrusion. That is, the positioning projection 28 of the aerosol container 10 of FIG. 1 and the positioning projection hole 23c of the mountain cover 23 are not provided, and the cylindrical lid portion 30 of the base portion 26 of the valve holder 21 (see FIGS. 5b to 5e). The cylindrical cover portion 23a of the mountain cover is notched by notches 24a and 24b extending in the vertical direction, and each has a circular arc shape in plan view. That is, the valve holder 21 includes a base portion 26 and a holder portion 27.
Thus, by providing the notches 24a and 24b, the manufacturing apparatus can easily recognize the orientation of the double aerosol container 10a. For example, the positions of the respective stems communicating with the first inner container 12 and the second inner container 13 are recognized by the single notches 24a and 24b, and the first inner container 12 and the second inner container are connected to each stem. 13 can be filled with the first content and the second content without making a mistake.
Further, six slits 17a are formed from the lower end of the stopper portion 17 of the valve holder 21 to a portion below the annular recess 20 so as to promote the filling of the propellant in the undercup filling method.
In the double aerosol container 10 b of FIG. 5 f, an air vent hole 25 is formed on the upper surface of the cover portion 23 a of the mountain cover 23. When the propellant is filled by the under cup filling method, the mountain cover 23 and the valve assembly 14 (valve holder 21) (upper) other than the gap (in the direction of the arrow in FIG. 4) between the outer container 11 and the valve assembly 14 (valve holder 21) In the direction), the pressurized propellant may enter. The air vent hole 25 is used to reliably discharge the propellant that has entered, and after filling the propellant and fixing the mountain cover 23, the aerosol container is immersed in warm water or water to prevent the propellant from leaking. By discharging the propellant that has entered before moving to the leakage inspection process for confirming that there is no false leakage, it is possible to eliminate false leakage, prevent erroneous determination in the leakage inspection process, and improve production efficiency. The location of the air vent hole 25 is not particularly limited as long as the propellant that has entered the upper portion of the valve assembly 14 can be discharged. However, the mountain cover 23 is formed with two holes 23c through which the stem 36 of the aerosol valve 22 is passed, and in order to accurately inspect that there is no leakage of the propellant in the container from the holes 23c, these holes 23c are used. It is preferable to provide them at equal intervals. In the double aerosol container 10b, two are formed at equal intervals with the hole 23c.

As shown in FIG. 6B, the double aerosol container 40 of FIG. 6A has an inner circumferential groove 42 (annular notch) extending downward from the upper end on the inner surface of the mouth portion 41e of the outer container 41. . The other configuration is substantially the same as the double aerosol 10 of FIG. 1, and includes a first inner container 12, a second inner container 13, and a valve assembly 14. The outer container 41 is also substantially the same as the outer container 11 of FIG.
The depth of the inner circumferential groove 42 is set to such an extent that the O-ring 19 can seal between the outer container 41 and the valve assembly 14 when the plug part 17 of the valve assembly 14 is inserted into the opening of the outer container 41. .
Since it is configured in this manner, as shown in FIG. 6c, when filling the under cup, a filling passage for the propellant can be easily secured, and the filling of the propellant is further facilitated. Further, as shown in FIG. 6d, a propellant discharge passage is easily formed when the outer container 41 is deformed due to a temperature rise or the like, and the propellant can be discharged to the outside more easily.

The embodiment of the double aerosol container shown in FIGS. 7 to 9 is provided with means for securely holding the valve assembly above the outer container when the under cup is filled.
As shown in FIG. 7b, the double aerosol container 40a of FIG. 7 protrudes radially outwardly below the annular recess 20 that holds the O-ring 19 on the outer periphery of the plug portion 17 of the valve holder 21 of the valve assembly 14. One honey 44a (support portion) is formed. Further, as shown in FIG. 5a, the valve holder 21 may be formed with notches 24a and 24b for positioning. Further, a slit 17a may be formed in the plug portion 17 of the valve holder 21 (see FIG. 5e), and an air vent hole 25 may be formed in the mountain cover 23 (see FIG. 5f). The other configuration is substantially the same as the double aerosol container 10 of FIG.
By providing the honey 44a in this manner, as shown in FIG. 7b, when filling the propellant by the undercup filling method, the valve holder 21 can be tilted and placed on the external container 11, and the filling passage is formed. It can be secured more reliably. The number of the honey 44a is not particularly limited as long as the valve holder 21 can be tilted, and a plurality of honey 44a may be provided on one side. Moreover, when the slit 17a is provided, it becomes easier to fill the propellant. After filling the propellant, as shown in FIG. 7 a, the valve assembly 14 is lowered to compress and seal the O-ring 19, and the honey 44 a is bent or cut to remove the valve holder 21. It is made to fit between the outer periphery of the stopper part 17 and the inner surface of the outer container 11. However, it may be cut and dropped into the outer container 11. Therefore, the seal between the valve holder 21 and the inner surface of the outer container 11 by the O-ring 19 is not hindered.
In addition, as shown in the double aerosol container 40b of FIG. 7c, a plurality of honey 44a may be provided in an annular shape so that the valve assembly 14 can be held above the outer container 11. In this case, the valve assembly is held in a stable position and posture without tilting, and the O-ring 19 is held above the outer container 11 by the honey 44a, so that a propellant filling passage is ensured. Further, in this embodiment, since the annular recess and the honey 44a are provided above the plug portion 17, the vertical length of the plug portion 17 inserted into the outer container 11 can be increased, and injection is performed when the propellant is filled. Even if the filling pressure of the agent is received, the filling passage can be secured without the valve holder 21 (valve assembly 14) wobbling. Therefore, the double aerosol container 40b can be easily filled with the propellant.
If the honey 44 a is provided below the annular recess 20 that holds the O-ring 19, the honey 44 a is simply placed on the upper end of the outer container 11, and the propellant is filled between the inside and the outside of the outer container 11. A passage can be secured. Therefore, the position of the O-ring 19 is not particularly limited. That is, if the honey 44a is formed below the O-ring 19, the O-ring is disposed at the upper part of the plug part to such an extent that a filling passage can be secured, which can be said to be substantially the upper part of the plug part.

In the double aerosol container 40c of FIG. 7d, one honey 44b (support part) protruding downward is formed on the lower surface of the flange part 18 of the base part 26 of the valve holder 21 of the valve assembly 14. The other configuration is substantially the same as the double aerosol container 40a of FIG. 7a.
By providing the honey 44b in this manner, the valve holder 21 can be tilted and placed on the external container 11 in the same manner as the double aerosol container 40a of FIG. In addition, after filling the propellant, the valve assembly 14 is lowered, and the honey 44b is bent or cut to be held between the flange portion 18 of the valve holder and the upper surface of the external container 11. A plurality of honey 44b may be provided in an annular shape so that the valve assembly 14 can be held above the outer container 11 as shown in FIG. 7c.
The height of the honey 44b is not particularly limited as long as the O-ring 19 can be held upward from the outer container 11. Similarly, if the O-ring 19 is held upward from the outer container 11, the O-ring 19 may be held at the upper portion, not the upper end of the plug portion 17.

In the double aerosol container 40d of FIG. 8, ribs 17d (supporting portions) projecting radially outward are formed in a plurality of locations at the lower end of the plug portion 17 of the base portion 26 of the valve holder 21 of the valve assembly 14. Further, an O-ring 29a is used as a sealing material that is held in the annular recess 35a of the aerosol valve 22 and seals between the aerosol valve 22 and the valve holder 21. The other configuration is substantially the same as the double aerosol container 40a of FIG. 7a.
By providing the rib 17d in this manner, the valve assembly 14 can be held above the outer container 11 in the same manner as the double aerosol container 40c of FIG. 7c, and a space between the rib 17d and the rib 17d is filled with a propellant. Thus, filling of the propellant becomes easy. Further, as shown in FIG. 5e, by using the plug portion provided with the slit 17a and forming the rib 17b in the portion where the slit 17a is not provided, the filling of the propellant is facilitated and the valve assembly 14 is lowered. Sometimes the rib 17d bends inward and is easy to insert. After filling the propellant, the rib assembly 17d is deformed inward to lower the valve assembly 14 and to be fixed to the outer container 11. The rib 17d may be provided at a part of the lower end of the plug portion 17, and the valve holder 21 of the valve assembly 14 may be inclined to fill the propellant.
When the rib 17d is provided at the lower end of the plug portion 17 as described above, the O-ring 19 is positioned above the rib 17d of the plug portion 17, and the rib 17d is disposed at the upper end of the outer container 11 so that the inside of the outer container A propellant filling passage can be secured between the outside and the outside. Therefore, the position of the O-ring 19 is not particularly limited. That is, if the rib 17d is formed below the O-ring 19, the O-ring is disposed on the top of the plug portion to such an extent that a filling passage can be secured, which can be said to be substantially the upper portion of the plug portion.

A double aerosol container 40e in FIG. 9 holds the valve assembly 14 above the outer container 11 with the bag bodies 12a and 13a of the first inner container 12 and the second inner container 13. That is, the valve assembly 14 is held above the outer container 11 when the bag bodies 12 a and 13 a are disposed on the bottom 11 a of the outer container 11. In addition, the bag bodies 12a and 13a are bent over the entire upper and lower sides with the upper and lower lines parallel to the axis being the folding lines 12b and 13b. And the bag bodies 12a and 13a are arrange | positioned so that it may become mirror symmetry.
By folding the bag bodies 12a and 13a in this way, the bent portions are given strength so that the valve assembly 14 can be held as ribs. Further, the valve assembly 14 can be stably held using the pair of bag bodies 12a and 13a as one support body by being arranged so as to be mirror-symmetrical. For example, as shown in FIG. 9b, the two bag bodies 12a and 13a are arranged in a substantially cylindrical shape, whereby the valve assembly 14 can be supported by using the two bag bodies 12a and 13a as one cylindrical support body.

The double aerosol container 45 in FIG. 10a includes an outer container 41, a first inner container 12 accommodated in the outer container, and a valve assembly 46 that closes the outer container 41 and the first inner container 12. Unlike the double aerosol container 10 of FIG. 1, this double aerosol container 45 has only one inner container. The outer container 41 and the first inner container 12 are substantially the same as the double aerosol container 40 of FIG.
This double aerosol container 45 is also formed with a plug part 17 into which the valve assembly 46 is inserted along the inner surface 11f of the opening part of the outer container 41, and a diameter larger than the plug part at the upper end of the plug part 17, The flange part 18 arrange | positioned on an opening part and the O-ring 19 which seals between an opening part and a stopper part are provided. An annular recess 20 that holds an O-ring 19 is formed on the outer periphery of the upper portion or the upper end of the stopper portion 17.

The valve assembly 46 includes a holder member 51 that closes the outer container 41, a housing 52 that is held at the center of the holder member 51, a stem 53 that is inserted into the housing so as to be movable up and down, and a stem hole 53a of the stem. The stem rubber 54 closes, the spring 55 that constantly biases the stem 53 upward, and the cover 56 that covers the entire holder member 51 and fixes the holder member 51 to the external container 41. In the valve assembly 46, unlike the valve assembly 14 of FIG. 1, the holder member 51, the housing 52, the stem 53, the stem rubber 54, the spring 55, and the cover 56 all function as one aerosol valve.
The holder member 51 is formed with a cylindrical plug portion 17 inserted along the inner surface 11f of the opening of the outer container 41, and has a diameter larger than that of the plug portion 17 at the upper end of the plug portion 17, and is formed in the mouth portion 11e. A flange portion 18 disposed above and an O-ring 19 which is held in an annular recess 20 formed on the outer periphery of the upper portion or the upper end of the stopper portion 17 and seals between the stopper portion and the external container. That is, it has the same structure as the base portion 26 of the double aerosol container of FIG. 1 except that the positioning protrusion 28 is not provided.

Since it is configured in this manner, as with the aerosol container 10 in FIG. 1, when filling the under cup, a filling passage for the propellant can be secured and the filling of the propellant can be facilitated. Further, a propellant discharge passage is formed when the outer container 41 is deformed due to a temperature rise or the like, and the propellant can be discharged to the outside before the valve assembly 46 escapes.
In the double aerosol container 58 of FIG. 10b, the valve assembly 59 includes a housing 59a in which the holder member 51 and the housing 52 of FIG. 10a are integrated. The other structure is the same as that of the double aerosol container 45 of FIG. 10 a, and includes an outer container 41 and a first inner container 12.
The aerosol container 45a of FIG. 10c is the same as the double aerosol container 45 of FIG. 10a except that it does not include an inner container and that a screw mechanism 47 is provided on the outer peripheral side surface of the cover 56 and the mouth portion 11e of the outer container. . That is, the valve assembly is fixed to the outer container by screwing the outer peripheral side surface of the cover 56 to the outer peripheral side surface of the mouth portion 11e of the outer container. And this aerosol container 45a is filled with the contents and a propellant in an external container, and becomes an aerosol product. In this embodiment, the cover 56 is turned so that a gap is formed between the outer container 41 and the flange portion, and the valve assembly is held upward, whereby a filling passage for the propellant can be secured during filling of the undercup, and the propellant Can be easily filled. After filling the propellant, the cover 56 is further turned and screwed. Further, a propellant discharge passage is formed when the outer container 41 is deformed due to a temperature rise or the like, and the propellant can be discharged to the outside before the valve assembly 46 escapes.

The double aerosol container 60 of FIG. 11 includes an outer container 61, a first inner container 12 and a second inner container 13 accommodated in the outer container, an outer container 61, a first inner container 12 and a second inner container. 13 is a valve assembly 62 that closes 13.
As shown in FIG. 11 b, the valve assembly 62 is formed with a plug portion 63 inserted along the inner surface 61 f of the opening of the outer container 61 and a diameter larger than the plug portion at the upper end of the plug portion 63. A flange portion 18 disposed on the opening and an O-ring 19 that seals between the opening and the plug are provided. An inner groove 65 extending downward from the upper end to above the O-ring is formed on the inner surface 61 f of the opening of the outer container 61.
This double aerosol container 60 is different from the double aerosol container 10 of FIG. 1 in the seal structure between the outer container 61 and the valve assembly 62.

As shown in FIGS. 1 and 12a, b, the outer container 61 includes a bottom portion 11a, a cylindrical body portion 11b, a tapered shoulder portion 11c, a cylindrical neck portion 61d, and a thick mouth portion 61e at its upper end. A pressure vessel made of synthetic resin. The outer peripheral surface of the mouth portion 61e protrudes radially outward from the outer peripheral surface of the neck portion 61d. Eight inner grooves 65 extending in the vertical direction from the upper end are arranged in an annular shape on the inner surfaces of the neck 61d and the mouth 61e constituting the inner surface 61f of the opening of the outer container. The inner groove 65 has a substantially rectangular cross section (see FIG. 12c), and is inclined so that the bottom surface is reduced in diameter downward (see FIG. 12f).
The inner groove 65 may have a substantially trapezoidal or substantially triangular cross section as shown in FIGS. Thus, by forming a substantially trapezoidal shape or a substantially triangular shape, the inner groove 65 can be easily molded. Further, as shown in FIG. 12g, the entire inner groove 65 may be inclined so as to reduce the diameter downward.
The number of the inner grooves 65 is not particularly limited, and it is preferable to provide 2 to 8 equiangular. However, as shown in FIGS. 13a and 13b, an annular inner groove 65a may be used. Furthermore, as shown in FIGS. 13c and 13d, a plurality of ribs 65b may be provided on the inner surface 61f. In this case, the space between the rib 65b and the rib 65b substantially acts as an inner groove as will be described later. 13c and 13d, eight ribs 65b are formed in the annular inner groove 65a shown in FIGS. 13a and 13b. However, the number of the ribs 65b and the shape of the inner surface 61 on which the ribs are formed are not particularly limited.
The length of the inner groove in the vertical direction is such that when the valve assembly 62 is fixed to the outer container 61, the O-ring 19 fixed to the valve holder contacts the inner surface 61 f of the opening located below the inner groove 65. It suffices to be configured.

The valve assembly 62 covers the valve holder 66 that closes the outer container 61, two independent aerosol valves 22 that are held by the valve holder 66 and close the inner containers 12 and 13, and covers the valve holder 66 and the aerosol valve 22. The aerosol valve 22 is fixed to the valve holder 66, and the mountain cover 23 is fixed to the opening of the external container 61. The aerosol valve 22 and the mountain cover 23 are substantially the same as the aerosol valve 22 and the mountain cover 23 of the double aerosol container of FIG.
The valve holder 66 includes a cylindrical base 67, two cylindrical holders 27 formed so as to penetrate the base vertically, and one positioning projection 28 extending upward at the upper end of the base. Have The holder part 27 and the protrusion 28 are substantially the same as the holder part 27 and the protrusion 28 of the double aerosol container 10 of FIG.
The base 67 is provided between the cylindrical plug 63 inserted along the inner surface 61f of the opening of the outer container 61, the cylindrical lid 30 disposed on the upper part of the outer container 61, and has a radius. And a flange portion 18 protruding outward in the direction. The flange portion 18 is disposed on the mouth portion 61 e of the outer container 61. An annular recess 69 for holding the O-ring 19 is formed at a position lower than the lower end of the inner groove 65 on the outer periphery of the plug portion 63 with the valve assembly 62 attached to the outer container 61. The lid portion 30 and the flange portion 18 are substantially the same as the lid portion 30 and the flange portion 18 of the double aerosol container of FIG.

The double aerosol container 60 configured as described above facilitates filling of the propellant into the space S between the outer container 61 and both inner containers. That is, as shown in FIG. 12a, since the inner groove 65 is provided on the inner surface of the opening of the outer container 61, the O-ring 19 can be externally held without holding the valve assembly 62 above the outer container 61 by a holding mechanism or the like. A passage filling the propellant can be secured in a state of being placed on the inner peripheral edge (between inner grooves or ribs 65b) of the opening 61f of the container 61 (see FIG. 14a). The propellant can be filled even if the valve assembly 62 is held so that the O-ring 19 is positioned above the upper end surface of the outer container 61. In this case, the propellant filling passage is formed by the inner groove 65. Since it becomes large, filling becomes easy.
Further, in the case of the outer container 61 having the annular inner groove 65a as shown in FIG. 13a, the injection is performed with the valve assembly 62 inserted into the outer container 61 until the O-ring 19 is accommodated in the inner groove 65. Since the propellant can be filled, the valve assembly 62 can be fixed in a short time with a short distance for pushing down the valve assembly after filling the propellant, and the propellant can be filled more accurately (FIG. 14b). reference).
After the O-ring 19 is positioned on the upper end surface or the inner groove 65 of the outer container 61 and filled with the propellant as described above, the O-ring 19 is below the lower end of the inner groove 65 and the outer container 61 The valve assembly 62 is lowered so that the valve assembly 62 is disposed between the inner surface 61f and the plug portion 63, and the valve assembly 62 is fixed.
After the valve assembly 62 is fixed to the outer container 61, each stem 36 is pushed down to discharge the air remaining in the first inner container 12 and the second inner container 13, and the contents are discharged from each stem. By filling the 12 and the second inner container 13, a double aerosol product is obtained.

Further, the double aerosol container 60 releases the propellant to the outside without the valve assembly 62 coming off when the aerosol container is heated due to an increase in ambient temperature or the like and the pressure resistance of the outer container 61 becomes weak and deforms. Can be made. Specifically, as shown in FIG. 14c, when the neck of the outer container 61 is deformed so as to expand, the lower end of the inner groove 65 is shifted downward, and the contact between the O-ring 19 and the inner surface 61f of the outer container 61 is released. The propellant is likely to be discharged to the outside through a path opposite to that at the time of filling, and the propellant can be discharged before the valve assembly 62 comes off. In particular, when the O-ring 19 is sealed by contacting the inner surface 61f of the neck portion 61d, the inner surface 61f at the initial stage where the pressure is not abnormally high before the strength of the outer container 61 is greatly reduced. And the seal between the plug portion 63 can be released. Moreover, you may provide the vertical groove extended below from an upper end in the outer surface of the opening part 61e of the outer container 61 like FIG. This further promotes the release of the propellant.

The double aerosol container 60a of FIG. 14e uses an outer container 61 having an annular inner groove 65a as shown in FIG. 13a, and is a side surface of the plug portion 17 of the valve holder 21 as shown in FIG. A thin plate-shaped honey 64 (support portion) is formed so as to protrude radially outward above the annular recess 69 that holds the ring. It is preferable that a plurality (preferably six) of the honeycombs 64 are formed at equal intervals.
By providing the honey 64 in this way, when filling the propellant by the under-cup filling method, the honey 64 is brought into contact with the upper end surface of the outer container 61 so that the valve holder 21 (valve assembly 14) is in a stable position. Since the O-ring is held in the inner groove so as not to be compressed, a propellant filling passage can be secured. Furthermore, as shown in FIG. 5e, one or more slits may be provided from the lower end of the stopper portion to the lower portion of the annular recess 20. Further, it is possible to stabilize the valve holder 21 so that the valve holder 21 does not wobble when the lower end of the plug portion 17 is lengthened to be filled with the propellant. After filling with the propellant, the valve holder 21 (valve assembly) 14 is pushed downward, so that the O-ring moves downward from the inner groove and is compressed by the inner surface to be sealed. And is accommodated in the inner groove 65. In this embodiment, since the O-ring 19 is provided below the honey 64, the honey 64 after being bent does not affect the sealing performance even if it is inserted into the gap between the outer container 61 and the valve holder 21.
15a and 15b, as shown in FIGS. 15a and 15b, one or a plurality of honeycombs 64 are provided on one side of the outer periphery of the stopper portion of the valve holder 21 or the lower surface of the flange portion, so that the valve assembly is an outer container. You may provide so that it may incline, when it mounts in the opening part. Thereby, a filling channel | path can be ensured reliably. After filling with the propellant, the honeycomb 64 is bent or cut by pushing the valve assembly 14 times. Therefore, the seal between the valve holder and the inner surface of the outer container by the O-ring is not obstructed.

The double aerosol container 60d in FIG. 16 is arranged radially outwardly above the outer container 61 having the annular inner groove 65a and the annular recess 69 holding the O-ring 19 like the double aerosol container 60a in FIG. 14e. A plug portion 17 of the valve holder 21 in which a projecting honey 64 is formed is provided. A guide wall 17e extending downward is formed at the lower end of the plug portion 17. Further, the guide wall 17e has a notch formed in an annular shape upward from the lower end in order to facilitate filling with the propellant.
With this configuration, the honey 64 is disposed on the upper end surface of the outer container 61 simply by placing the valve assembly 62 on the outer container 61. At that time, since the O-ring 19 is located in the inner groove 65a, a propellant filling passage is secured. Further, since the guide wall 17e is provided, the entire valve assembly 62 is prevented from wobbling when the propellant is filled.

In the double aerosol container 60e of FIG. 17, a rib 17d (support portion) protruding radially outward is formed in an annular shape at the lower end of the plug portion 17 of the base portion 26 of the valve holder 21 of the valve assembly 62. The other configuration is substantially the same as the double aerosol container 60 of FIG. 11a.
By providing the ribs 17d in this manner, the valve assembly 62 can be placed above the outer container 61 when the propellant is filled, similarly to the double aerosol container 40d of FIG. Further, since the groove 65 is provided in the outer container 61, a large filling passage is secured by the rib 17d, and the filling of the propellant is further facilitated. After filling the propellant, the rib assembly 17d is deformed inward to lower the valve assembly 62 and to be fixed to the outer container 61. The rib 17d may be provided at a part of the lower end of the plug portion 17, and the valve holder 21 of the valve assembly 62 may be inclined to fill the propellant.

The double aerosol container 60f of FIG. 18 is similar to the double aerosol container 40e of FIG. 9 in that the valve assembly 62 is filled with the propellant in the bag body 12a of the first inner container 12 and the bag body 13a of the second inner container 13. And the O-ring 19 is positioned in the groove 65. The other configuration is substantially the same as the double aerosol container 60 of FIG. 11a.
The bag bodies 12a and 13a are bent in the same manner as the bag bodies 12a and 13a in FIG. Moreover, it is preferable to arrange each so that it may become mirror-symmetrical. Also in this case, for example, as shown in FIG. 18b, the two bag bodies 12a and 13a are arranged in a substantially cylindrical shape to support the valve assembly 62 with the two bag bodies 12a and 13a serving as one cylindrical support body. It is preferable.

The double aerosol containers 70a and 70b in FIGS. 19a and 19b have the sealing structure of the double aerosol container 60 in FIG. 11 and have a single inner container.
The double aerosol container 70 a includes an outer container 61, a first inner container 12 accommodated in the outer container, and a valve assembly 71 that closes the outer container 61 and the first inner container 12. The outer container 61 is substantially the same as the outer container 61 of the double aerosol container 60 of FIG. 11, and the first inner container 12 is substantially the same as the inner containers 12 and 13 of the double aerosol container 10 of FIG. The same.
The valve assembly 71 covers the holder member 72 that closes the outer container 61, the housing 52 that is held at the center of the holder member 72, the stem 53, the stem rubber 54, the spring 55, and the holder member 72, It comprises a cover 56 that fixes the holder member 72 to the outer container 61. The holder member 72, the housing 52, the stem 53, the stem rubber 54, the spring 55, and the cover 56 all function as a single aerosol valve. The housing 52, the stem 53, the stem rubber 54, the spring 55, and the cover 56 are substantially the same as the housing 52, the stem 53, the stem rubber 54, the spring 55, and the cover 56 of the double aerosol container 45 of FIG.
The holder member 72 is formed with a cylindrical plug portion 63 inserted along the inner surface 61f of the opening of the outer container 61, and has a diameter larger than that of the plug portion 63 at the upper end of the plug portion 63. It consists of the flange part 18 arrange | positioned on the top. An annular recess 73 that holds the O-ring 19 is formed on the outer periphery of the plug portion 63 at a position lower than the lower end of the inner groove 65.

Since it is configured in this manner, as with the aerosol container 60 in FIG. 11, a filling passage for the propellant can be secured during filling of the under cup, and the filling of the propellant can be facilitated. Further, a propellant discharge passage is formed when the outer container 61 is deformed due to a temperature rise or the like, and the propellant can be discharged to the outside before the valve assembly 71 escapes.
On the other hand, in the double aerosol container 70b of FIG. 19B, the valve assembly 76 includes a housing 77 in which the holder member 72 and the housing 52 of the valve assembly 71 of FIG. 19A are integrated. The other configuration is the same as that of the double aerosol container 70a of FIG. 19a, and includes an outer container 61 and a first inner container 12.
The aerosol container 70c of FIG. 19c is the same as the double aerosol container 70a of FIG. 19a except that the inner container is not provided and the screw mechanism 78 is provided on the outer peripheral side surface of the cover 56 and the mouth 61e of the outer container. . That is, the valve assembly is fixed to the outer container by screwing the outer peripheral side surface of the cover 56 to the outer peripheral side surface of the mouth portion 61e of the outer container. And this aerosol container 70c is filled with the contents and a propellant in an external container, and becomes an aerosol product. In this embodiment, the cover 56 is rotated so that a gap is formed between the outer container 61 and the flange portion, and the valve assembly is held upward, whereby a filling passage for the propellant can be secured during filling of the undercup, and the propellant Can be easily filled. After filling the propellant, the cover 56 is further turned and screwed. Further, a propellant discharge passage is formed when the outer container 41 is deformed due to a temperature rise or the like, and the propellant can be discharged to the outside before the valve assembly 71 escapes.

The double aerosol container 80 of FIG. 20 includes an outer container 81, a first inner container 12 and a second inner container 13 accommodated in the outer container, an outer container 81, a first inner container 12 and a second inner container. 13 is a valve assembly 82 for closing 13.
As shown in FIG. 20 b, the double aerosol container 80 includes a gasket 84 between the upper surface of the outer container 81 and the flange portion 18 of the valve assembly 82. In addition, a communication passage 85 is provided on the upper surface of the outer container 81 to communicate the inside and outside of the outer container 81 that is normally closed by the gasket 84.
This double aerosol container 80 is different from the double aerosol container 10 in FIG. 1 or the double aerosol container 60 in FIG. 11 in the sealing structure between the outer container 81 and the valve assembly 82.

  As shown in FIGS. 21a and 21b, the outer container 81 is composed of a bottom portion 11a, a cylindrical body portion 11b, a tapered shoulder portion 11c, a cylindrical neck portion 81d, and a thick mouth portion 81e at its upper end. It is a pressure vessel made of resin. The outer peripheral surface of the mouth portion 81e protrudes radially outward from the outer peripheral surface of the neck portion 81d. A plurality of seal protrusions 86 are formed coaxially on the upper end surface 81k of the opening of the outer container (two in this embodiment). Further, radial slits 87 are formed in the seal protrusion 86 at equal intervals so as to penetrate the seal protrusion. Further, a plurality of inner grooves 88 extending downward from the upper end are arranged in an annular shape on the inner surfaces of the neck portion 81d and the mouth portion 81e constituting the inner surface 81f. As shown in FIGS. 12 and 13, the inner groove 88 may have a substantially trapezoidal shape or a substantially triangular cross section, and the lower surface of the inner groove 88 or the entire inner groove may be an inclined surface. It may be formed. Further, ribs may be formed on the inner surface 81f, and the same effect as the inner groove 88 may be provided between the ribs. Furthermore, a plurality of outer grooves 89 extending downward from the upper end are arranged in an annular shape on the outer surface of the mouth portion 81e. The gasket 84 is provided so as to cover the seal protrusion 86, and the slit 87 serves as the communication path 85 described above. Therefore, the inner groove 88 and the outer groove 89 are preferably positioned on the same radius.

The valve assembly 82 covers the valve holder 91 that closes the outer container 81, two independent aerosol valves 22 that are held by the valve holder 91 and respectively close the inner containers 12 and 13, and covers the valve holder 91 and the aerosol valve 22. The aerosol valve 22 is fixed to the valve holder 91 and the mountain cover 23 is fixed to the opening of the external container 81. The aerosol valve 22 and the mountain cover 23 are substantially the same as the aerosol valve 22 and the mountain cover 23 of the double aerosol container of FIG.
The valve holder 91 includes a cylindrical base 92, two cylindrical holders 27 formed so as to vertically penetrate the base, and one positioning protrusion 28 extending upward at the upper end of the base. Have The holder part 27 and the protrusion 28 are substantially the same as the holder part 27 and the protrusion 28 of the double aerosol container 10 of FIG.
The base 92 is provided between the columnar plug portion 93 inserted along the inner surface 81f of the opening of the outer container 81, the columnar lid portion 30 disposed above the outer container 81, and has a radius. And a flange portion 18 protruding outward in the direction. The flange portion 18 is disposed on the upper portion of the mouth portion 81 e of the outer container 81 via a gasket 84. An O-ring or the like is not fixed to the outer periphery of the plug portion 93. The lid portion 30 and the flange portion 18 are substantially the same as the lid portion 30 and the flange portion 18 of the double aerosol container of FIG.

The double aerosol container 80 configured in this way can easily fill the space S between the outer container 81 and both inner containers with the propellant. That is, as shown in FIG. 22a, the valve assembly 82 is held upward so that a gap is formed between the outer container 81 and the gasket 84, and the seal between the mouth portion 81e of the outer container 81 and the gasket 84 is released. The slit 87 becomes the propellant communication path 85 on the upper end surface of the outer container 81. Therefore, between the outer groove 89 of the mouth part 81e of the outer container 81 and the mountain cover 23, between the outer container 81 and the gasket 84 (slit 87 (communication path 85)), and between the outer container 81 and the plug holder 93 of the valve holder. The space S can be filled with the propellant through the space (inner groove 88). Gasket 84 and seal projection 86 do not interfere with propellant filling. After filling the propellant, the gasket 84 seals the upper end surface 81k of the outer container 81 only by lowering the valve assembly 82 slightly.
After the valve assembly 82 is fixed to the outer container 81, each stem 36 is pushed down to discharge the air remaining in the first inner container 12 and the second inner container 13, and the contents are discharged from each stem. By filling the 12 and the second inner container 13, a double aerosol product is obtained.

Further, the double aerosol container 80 can release the propellant to the outside without the valve assembly 82 flying away when the pressure resistance of the outer container 81 becomes weak and deforms due to an increase in ambient temperature or the like. Specifically, as shown in FIG. 22b, when the outer container 81 is deformed, the seal between the upper end surface 81k and the gasket 84 is slightly weakened, and accordingly, a path opposite to that at the time of filling is formed by the slit 87. As a result, the propellant can be released before the valve assembly 62 jumps. By providing the inner groove 88 from the mouth portion 81e to the neck portion 81d, the neck portion 81d is deformed in the initial stage of temperature rise, and the gap between the inner groove 88 and the plug portion 93 is increased, so that the propellant can be easily discharged to the outside. Become.
In this embodiment, the inner groove 88 and the outer groove 89 are formed in the outer container 81, but these may be omitted. If the upper end surface 81k of the outer container 81 is formed with a passage (slit 87) that communicates the inside and outside of the outer container 81, filling before injection and discharging of the propellant during deformation of the outer container are possible. Further, instead of the slit 87, the height of the through hole penetrating the inside and the outside of the mouth portion 81e or the seal protrusion 86 may be partially lowered. The slit 87 may be provided in the mouth portion of the external container shown in FIGS. 1 to 9. In that case, the propellant is easily filled, and when the container body is deformed by heat, the propellant is easily discharged to the outside.

The double aerosol containers 95a and b shown in FIGS. 23a and 23b have the sealing structure of the double aerosol container 80 shown in FIG. 20 and have a single inner container.
The double aerosol container 95a includes an outer container 81, a first inner container 12 accommodated in the outer container, and a valve assembly 96 that closes the outer container 81 and the first inner container 12. The outer container 81 is substantially the same as the outer container 81 of the double aerosol container 80 of FIG. 20, and the first inner container 12 is substantially the same as the inner containers 12 and 13 of the double aerosol container 10 of FIG. The same.
The valve assembly 96 covers the holder member 97 that closes the outer container 81, the housing 52 that is held in the center of the holder member 97, the stem 53, the stem rubber 54, the spring 55, and the holder member 97, It comprises a cover 56 for fixing the holder member 97 to the outer container 81. The holder member 97, the housing 52, the stem 53, the stem rubber 54, the spring 55, and the cover 56 all function as one aerosol valve. The housing 52, the stem 53, the stem rubber 54, the spring 55, and the cover 56 are substantially the same as the housing 52, the stem 53, the stem rubber 54, the spring 55, and the cover 56 of the double aerosol container 45 of FIG.
The holder member 97 is formed with a cylindrical plug portion 98 inserted along the inner surface 81f of the opening of the outer container 81, and has a diameter larger than that of the plug portion at the upper end of the plug portion 98. And a flange portion 18 disposed thereon. The flange portion 18 is disposed on the upper portion of the mouth portion 81 e of the outer container 81 via a gasket 84. An O-ring or the like is not fixed to the outer periphery of the plug portion 98. The lid portion 30 and the flange portion 18 are substantially the same as the lid portion 30 and the flange portion 18 of the double aerosol container of FIG.

Since it is configured in this way, as with the aerosol container 80 of FIG. 20, a filling passage for the propellant can be secured during filling of the undercup, and the filling of the propellant can be facilitated. Further, a propellant discharge passage is formed when the outer container 81 is deformed due to a temperature rise or the like, and the propellant can be discharged to the outside before the valve assembly 96 escapes.
In the double aerosol container 95b of FIG. 23b, the valve assembly 99 includes a housing 99a in which the holder member 97 and the housing 52 of the valve assembly 96 of FIG. 23a are integrated. The other configuration is the same as that of the double aerosol container 90a of FIG. 23a, and includes an outer container 81 and a first inner container 12.
The aerosol container 95c of FIG. 23c is the same as the double aerosol container 95a of FIG. 23a except that the inner container is not provided and a screw mechanism 99b is provided on the outer peripheral side surface of the cover 56 and the mouth portion 81e of the outer container. . That is, the valve assembly is fixed to the outer container by screwing the outer peripheral side surface of the cover 56 to the outer peripheral side surface of the mouth portion 81e of the outer container. And this aerosol container 95c is filled with the contents and a propellant in an external container, and becomes an aerosol product. In this embodiment, the cover 56 is turned so that a gap is formed between the outer container 81 and the flange portion, and the valve assembly is held upward, so that a filling passage for the propellant can be secured at the time of filling the undercup. Can be easily filled. After filling the propellant, the cover 56 is further turned and screwed. Further, a propellant discharge passage is formed when the outer container 81 is deformed due to a temperature rise or the like, and the propellant can be discharged to the outside before the valve assembly 96 escapes.

The double aerosol container 100 of FIG. 24 includes an outer container 101, a first inner container 102 and a second inner container 103 accommodated in the outer container, an outer container 101, a first inner container 102, and a second inner container. And a valve assembly 104 for closing 103. An injection member may be attached to the valve assembly 104.
The first inner container 102 and the second inner container 103 of the double aerosol container 100 are filled with the first content A and the second content B, respectively, and the propellant P is placed in the space S between the outer container 101 and both inner containers. Filling with a double aerosol product.
In the double aerosol container 100, the outer container 101 and the valve assembly are sealed with an O-ring 105 as shown in FIG. 19b.

The outer container 101 is substantially the same as the outer container 11 of FIG. 1, and includes a bottom part, a cylindrical body part, a tapered shoulder part, a cylindrical neck part 101d, and a thick mouth part 101e at its upper end. A pressure vessel made of synthetic resin. The neck portion 101d and the mouth portion 101e arranged in the same axis have the same inner diameter, and the inner surface constitutes the inner surface 101f of the cylindrical opening of the outer container 101. Further, the outer peripheral surface of the mouth part 101e protrudes radially outward from the outer peripheral surface of the neck part 101d.
The first inner container 102 and the second inner container 103 are also substantially the same as the first inner container 12 and the second inner container 13 in FIG. 1, and are composed of a flexible bag and a connecting member, and are connected to each other. It is connected to the aerosol container of the valve assembly via a member.
On the other hand, the valve assembly 104 is substantially the same as the valve assembly 62 of FIG. 11, and includes a valve holder 66, an aerosol valve 22, and a mountain cover 23. The O-ring 105 is held in an annular recess 69 formed on the outer periphery of the base of the valve holder.

The O-ring 105 as a whole has a non-uniform diameter and is non-uniform. Specifically, the enlarged diameter portion 105a having a partially enlarged diameter is formed, and the enlarged diameter portion 105a and the reduced diameter portion 105b are annularly connected alternately. A tapered portion 105c is provided between the enlarged diameter portion 105a and the reduced diameter portion 105b so that the diameter is continuously reduced. However, the enlarged diameter portion 105a and the reduced diameter portion 105b may be directly connected. The enlarged diameter portion 105a and the reduced diameter portion 105b are preferably arranged at equal intervals. For the enlarged diameter portion 105a and the reduced diameter portion 105b, a larger ratio of the enlarged diameter portion 105a is preferable because the sealing performance can be strengthened.

In this double aerosol container 100, as shown in FIG. 24c, the O-ring 105 is in light contact with the inner surface 101f of the outer container 101 (or the O-ring 105 is lightly inserted into the opening of the outer container 101). Then, the valve assembly 104 is held upward, and the space between the outer container 101 and the inner cover 102 is filled with the propellant from between the outer container 101 and the mountain cover 23. At this time, since the diameter of the O-ring 105 is not uniform, even if the enlarged diameter portion 105a forms a sealing property between the outer container 101 and the valve assembly 104, the reduced diameter portion 105b does not sufficiently secure the sealing property. . Therefore, the reduced diameter portion 105b becomes a propellant filling passage, and the O-ring 105 does not hinder the flow of the propellant. By inserting the valve assembly 104 after filling the propellant, the reduced diameter portion 105b is also sufficiently compressed, so that the space between the outer container 101 and the valve assembly 104 can be sealed.
This O-ring 105 can be used in place of the O-ring 19 of the double aerosol container 10 of FIG. 1 or the O-ring 19 of the double aerosol container 60 of FIG. The propellant filling efficiency is further increased.

A 1st content B 2nd content P Propellant S Space 10, 10a, 10b Double aerosol container 11 External container 11a Bottom part 11b Body part 11c Shoulder part 11d Neck part 11e Mouth part 11f Inner surface 11h length of external container Groove 12 First inner container 12a First bag body 12b Folding line 13 Second inner container 13a Second bag body 13b Folding line 14 Valve assembly 15 Injection member 16 Connecting member 16a Adhering portion 16b Connecting portion 17 Plug portion 17a Slit 17b Rib 17e Guide wall 18 Flange portion 19 O-ring 20 Annular recess 21 Valve holder 22 Aerosol valve 23 Mountain cover 23a Cover portion 23b Fixing portion 23c Insertion hole 23d Recesses 24a and 24b Notch portion 25 Air vent hole 26 Base portion 27 Holder portion 28 Projection 29 Seal Member 30 Part 31 center hole 32 locking groove 33 annular step part 35 housing 35a annular recess 36 stem 36a stem hole 37 stem rubber 38 spring 39 cover 39a upper side surface 39b lower end 40, 40a, 40b, 40c, 40d, 40e double Aerosol container 41 External container 41e Mouth part 42 Inner circumferential groove 44a, 44b Honey 45 Double aerosol container 45a Aerosol container 46 Valve assembly 47 Screw mechanism 51 Holder member 52 Housing 53 Stem 53a Stem hole 54 Stem rubber 55 Spring 56 Cover 58 Double Aerosol container 59 Valve assembly 59a Housing 60, 60a, 60b, 60c, 60d, 60e, 60f Double aerosol container 61 External container 61d Neck 61e Mouth 61f Inner surface 62 Valve assembly Inner part 63 Plug part 64 Honey 65, 65a Inner groove 65b Rib 66 Valve holder 67 Base 69 Annular recess 70a, b Double aerosol container 70c Aerosol container 71 Valve assembly 72 Holder member 73 Annular recess 76 Valve assembly 77 Housing 78 Screw mechanism 80 Two Heavy aerosol container 81 External container 81d Neck part 81e Mouth part 81f Inner surface 81k Upper surface 82 Valve assembly 84 Gasket 85 Communication path 86 Seal projection 87 Slit 88 Inner groove 89 Outer groove 91 Valve holder 92 Base part 93 Plug part 95a, b Double aerosol container 95c Aerosol container 96 Valve assembly 97 Holder member 98 Plug part 99 Valve assembly 99a Housing 99b Screw mechanism 100 Double aerosol container 101 External volume Vessel 101d neck 101e mouth 101f inner surface 102 first inner container 103 second inner container 104 valve assembly 105 O-ring 105a enlarged diameter part 105b reduced diameter part 105c tapered part

Claims (3)

An external container;
An aerosol container having a valve assembly for closing the outer container,
The valve assembly is
A valve holder,
Two aerosol valves held in the valve holder;
A mountain cover for fixing the valve holder to the external container;
The mountain cover has a cover portion that covers the valve holder and the aerosol valve,
An aerosol container, wherein the cover portion is provided with one positioning notch portion having a shape in which a cylindrical cover portion is notched in a vertical direction . The cover portion has a circular shape in plan view.
Aerosol container according to claim 1 Symbol placement. The outer container has a cylindrical mouth,
The aerosol container according to claim 1 or 2 , wherein the mountain cover is fixed by caulking to an outer periphery of a mouth portion of the external container.

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