JP2016196330A - Discharge container and discharge product manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge container having a constant discharge amount per unit time from the beginning to the end. SOLUTION: An outer bottle 11, an inner bottle 12 housed inside the outer bottle 11, a valve assembly 13 for closing the outer bottle 11 and the inner bottle 12, and a pressure adjustment housed in the inner bottle to adjust the internal pressure of the inner bottle. A discharge container 10 provided with a mechanism 14. The pressure adjusting mechanism 14 is attached to the lower end of the valve assembly 13 and is suspended in the inner bottle 12. The space between the outer bottle 11 and the inner bottle 12 of the discharge container 10 becomes the undiluted solution chamber S1, and the space inside the inner bottle 12 becomes the pressurizing chamber S2. [Selection diagram] Fig. 1

Description

  The present invention relates to a discharge container and a method for manufacturing a discharge product.

Patent Document 1 discloses an outer bottle, an inner bottle, a lid, a first fluid filled between the outer bottle and the inner bottle, and a second fluid (pressurizing agent) filled in the inner bottle. A multilayer bottle product is disclosed. In such a multilayer bottle product, when compressed gas is used as a pressurizing agent, the volume in the inner bottle increases by discharging the first fluid, so the pressure in the inner bottle decreases and the discharge state decreases. There's a problem.
In Patent Document 2, a high-pressure container is attached to the bottom of a fluid dispensing container that discharges contents, and a pressure agent is discharged from the high-pressure container when the contents are discharged and the internal pressure of the fluid dispensing container decreases. A pressure control device for replenishing is disclosed.
Patent Document 3 discloses a pressure adjusting device that is housed in a pressurized discharge container and adjusts the internal pressure of the pressurized discharge container.

JP 2011-251710 A Japanese Patent No. 4364907 Patent No. 4050703

Since the pressure control device of Patent Document 2 connects the pressure control device to the bottom of the fluid dispensing container, the connection portion is exposed to the outside, the connection is disconnected by an external force or the like, and there is a possibility that the pressurizing agent (high pressure gas) is ejected. is there. In addition, since the pressure control device has a pressurizing agent filling valve attached to the bottom, after the pressure control device is attached to the bottom of the fluid dispensing container and filled with the pressurizing agent, the dispensing valve of the upper fluid dispensing container It is necessary to confirm the leakage of the pressurizing agent from the valve at the bottom in addition to the leakage from the bottom, and two steps for confirming the leakage are required, which is troublesome.
The pressure adjustment device of Patent Document 3 is used for a single-layer pressurized discharge container, and the pressure adjustment device and the stock solution are accommodated in the same space. The liquid enters the tube and pressure adjustment is not stable.
An object of the present invention is to provide a discharge container that is easy to manufacture and can discharge with a constant discharge amount of contents from the start to the end of use.

  The discharge container of the present invention comprises an outer bottle, a flexible inner bottle accommodated in the outer bottle, a valve assembly having a valve mechanism that closes the outer bottle and the inner bottle, and the outer bottle and the inner bottle. Is a discharge container in which the stock solution chamber is filled with the contents and the pressurizing chamber in the inner bottle is filled with the pressurizing agent, and is contained in the inner bottle, and when the inner pressure of the inner bottle decreases It is characterized in that a pressure adjusting mechanism for raising the pressure is provided.

The discharge container of the present invention is preferably one in which the pressure adjusting mechanism is attached to the lower end of the valve assembly.
In the discharge container of the present invention, the pressure adjusting mechanism includes a high pressure chamber having a gas supply hole communicating with the inside of the inner bottle, a reference pressure chamber sealed at a predetermined pressure, the reference pressure chamber and the inner bottle. A piston that compresses and expands the reference pressure chamber according to the pressing force, and a valve that shuts and communicates the gas supply hole in conjunction with the piston are provided. The piston compresses the reference pressure chamber to be smaller than a predetermined volume. In this case, it is preferable that the valve shuts off the gas supply hole, and the valve communicates with the gas supply hole when the reference pressure chamber is expanded larger than a predetermined capacity by the piston. This discharge container is preferably one in which a gas container in which a high-pressure chamber and a valve are integrated is contained in an inner bottle. It is preferable that the pressure adjusting mechanism is formed at a lower portion of the valve assembly, includes a cylinder portion that houses a piston, and a gas container is attached to a lower end of the cylinder portion. It is preferable that the bottom of the gas container is placed on the bottom of the inner bottle. Further, the pressure adjustment mechanism is suspended from the opening of the inner bottle and accommodated, and includes a container holder for holding the gas container, and the container holder includes an inside of the container holder, an inside of the inner bottle, It is preferable to form a slit that communicates with each other.

  A discharge product manufacturing method for filling a discharge container in which a bottom part of a gas container is placed on a bottom part of an inner bottle with a pressurizing agent, wherein the outer bottle and the inner bottle are prepared, and the gas container is placed in the inner bottle. The pressure adjustment mechanism is operated by fixing the valve assembly to the outer bottle and the inner bottle, and the pressure bottle is filled from the gas container into the inner bottle.

  A discharge product manufacturing method for filling a discharge container provided with a container holder with a pressurizing agent, preparing the outer bottle and the inner bottle, and storing the container holder holding the gas container in the inner bottle, The pressure adjustment mechanism is operated by fixing a valve assembly to the outer bottle and the inner bottle, and a pressure agent is filled from the gas container into the inner bottle.

  The discharge container of the present invention comprises an outer bottle, a flexible inner bottle accommodated in the outer bottle, a valve assembly having a valve mechanism that closes the outer bottle and the inner bottle, and the outer bottle and the inner bottle. Is a discharge container in which the stock solution chamber is filled with the contents and the pressurizing chamber in the inner bottle is filled with the pressurizing agent, and is contained in the inner bottle, and when the inner pressure of the inner bottle decreases Since a pressure adjustment mechanism that raises the pressure is provided, even if the valve mechanism is operated and the contents are discharged, the pressure in the pressurizing chamber is kept constant, and the discharge amount per unit time is constant from the beginning to the end. Can be. Moreover, since the pressure adjustment mechanism is independently accommodated in the inner bottle, there is no contact with the contents, and a stable pressure adjustment action is obtained. Further, the content filled between the outer bottle and the inner bottle can reduce the permeation of the pressure agent filled in the inner bottle, and can reduce the leakage of the pressure agent when not in use.

  In the discharge container of the present invention, when the pressure adjusting mechanism is attached to the lower end of the valve assembly, the assembly of the discharge container is simple.

  In the discharge container of the present invention, the pressure adjusting mechanism includes a high pressure chamber having a gas supply hole communicating with the inside of the inner bottle, a reference pressure chamber sealed at a predetermined pressure, the reference pressure chamber and the inner bottle. A piston that compresses and expands the reference pressure chamber according to the pressing force, and a valve that shuts and communicates the gas supply hole in conjunction with the piston are provided. The piston compresses the reference pressure chamber to be smaller than a predetermined volume. The valve shuts off the gas supply hole, and when the reference pressure chamber is expanded larger than a predetermined capacity by the piston, the valve communicates with the gas supply hole, so that the valve is not affected by temperature changes. It becomes a pressure adjustment mechanism.

When a gas container in which the high-pressure chamber and the valve are integrated is contained in the inner bottle, it is not necessary to fill the high-pressure chamber with the pressurizing agent when assembling the discharge container. Is simple.
The structure is simple when the pressure adjusting mechanism is formed in the lower part of the valve assembly and includes a cylinder part that accommodates the piston, and a gas container is attached to the lower end of the cylinder part.
When the bottom part of the gas container is placed on the bottom part of the inner bottle, the bottom part of the gas container is supported by the inner bottle. Therefore, when attaching the valve assembly, the gas container is easily connected to the lower end of the cylinder part.
The pressure adjustment mechanism is suspended from the opening of the inner bottle and accommodated, and includes a container holder for holding the gas container, and the container holder includes an interior of the container holder and an interior of the inner bottle. When a slit is formed, the position of the gas container is stable, and the bottom of the gas container is supported by the container holder, so that it is easy to connect the gas container to the lower end of the cylinder part when installing the valve assembly. . Further, the size of the outer bottle and the inner bottle can be freely selected.

  A discharge product manufacturing method for filling a discharge container in which a bottom part of a gas container is placed on a bottom part of an inner bottle with a pressurizing agent, wherein the outer bottle and the inner bottle are prepared, and the gas container is placed in the inner bottle. The pressure adjustment mechanism is operated by fixing the valve assembly to the outer bottle and the inner bottle, and the inner container is filled with the pressurizing agent from the gas container. The discharge product can be assembled by the user without the need for a process. Thereby, the new refill system of an aerosol container can be constructed.

  A discharge product manufacturing method for filling a discharge container provided with a container holder with a pressurizing agent, preparing the outer bottle and the inner bottle, and storing the container holder holding the gas container in the inner bottle, By fixing the valve assembly to the outer bottle and the inner bottle, the pressure adjusting mechanism is operated and the pressurizing agent is filled from the gas container into the inner bottle, so that a special pressurizing agent filling step is required. First, the user can assemble the discharge product. Thereby, the new refill system of an aerosol container can be constructed.

It is sectional drawing which shows one Embodiment of the discharge container of this invention. 2a to 2c are sectional views showing a valve assembly, a valve holder and a cap of the discharge container of FIG. 1, respectively. 3a and 3b are sectional views showing a pre-operation state and an operation state of the pressure adjustment mechanism of the discharge container of FIG. 1, respectively. 4a and 4b are schematic views showing the assembly process of the discharge container of FIG. 5a and 5b are schematic views showing the usage state of the discharge container of FIG. 1, respectively. 6a is a schematic view showing a discharge mechanism of the pressurizing agent in the discharge container of FIG. 1, and FIG. 6b is a schematic view showing a discharge mechanism of the pressurizing agent of another embodiment of the discharge container of the present invention. 6c is a sectional view showing a refill product of the discharge container of FIG. It is sectional drawing which shows other embodiment of the discharge container of this invention. 8a to 8c are cross-sectional views showing the valve assembly, valve holder, and push button of the discharge container of FIG. 7, respectively. 9a and 9b are cross-sectional views showing the pressure adjusting mechanism of the discharge container of FIG. 7 and its operating state, respectively. 10a and 10b are schematic views showing the assembly process of the discharge container of FIG. FIG. 11a is a schematic view showing a use state of the discharge container of FIG. 7, and FIG. 11b is a schematic view showing a pressurizing agent discharging mechanism. It is sectional drawing which shows other embodiment of the discharge container of this invention. 13a and 13b are schematic views showing the assembly process of the discharge container of FIG. It is sectional drawing which shows other embodiment of the discharge container of this invention. 15a and 15b are schematic views showing the assembly process of the discharge container of FIG. FIG. 16a is a schematic view showing a use state of the discharge container of FIG. 14, and FIG. 16b is a schematic view showing a discharge mechanism of the pressurizing agent. It is sectional drawing which shows other embodiment of the discharge container of this invention.

A discharge container 10 in FIG. 1 includes an outer bottle 11, an inner bottle 12 accommodated therein, a valve assembly 13 that closes the outer bottle 11 and the inner bottle 12, and an inner bottle, And a pressure adjusting mechanism 14 for adjusting. The pressure adjustment mechanism 14 is attached to the lower end of the valve assembly 13 and is suspended from the opening of the inner bottle 12. A space between the outer bottle 11 and the inner bottle 12 of the discharge container 10 is a stock solution chamber S1, and a space in the inner bottle 12 is a pressurizing chamber S2.
The stock solution chamber S1 of the discharge container 10 is filled with the contents C, and the pressurizing agent S is filled into the pressure chamber S2 of the inner bottle 12 to form a discharge product.

The outer bottle 11 is a bottomed cylindrical pressure-resistant bottle having a cylindrical body, a tapered shoulder, and a cylindrical neck. A screw 11a is formed on the outer periphery of the neck. Below the screw 11a, a cylindrical outer seal holding portion 11b composed of an outer cylindrical portion 11b1 and an annular projection 11b2 at the lower end thereof is formed. The outer seal holding part 11b holds an annular outer seal material 16 having a circular cross section. The outer seal material 16 seals between the outer bottle 11 and the cap 23 of the valve assembly 13. The outer cylindrical portion 11b1 is a portion that compresses the outer seal material 16 radially outward, and the annular step portion 11b2 is a portion that prevents the outer seal material 16 from coming out of the outer cylindrical portion 11b1. Further, below the outer seal holding portion 11b, an annular protrusion 11c is formed for holding the outer bottle 11 when the discharge container 10 is assembled or for hanging the outer bottle 11 when the contents C are filled. It should be noted that the outer shape of the annular step portion 11c is not only circular, but may be provided with a flat surface in part to prevent the discharge container 10 from rotating, or may be rectangular or polygonal.
The outer bottle 11 is preferably transparent or translucent so that the inside can be visually recognized.

The inner bottle 12 has substantially the same shape as the inner surface of the outer bottle 11, and is a bottomed cylindrical flexible bottle having a cylindrical body, a tapered shoulder, and a cylindrical neck. It is. At the upper end of the inner bottle 12, a flange portion 12a that is disposed at the upper end of the outer bottle 11 and protrudes outward is formed. The inner surface of the neck portion of the inner bottle 12 is an inner cylindrical portion 12b that compresses the inner sealing material 17 radially outward via a container holder 43 described later. Further, the upper surface of the inner bottle 12 is a portion that compresses the plate sealing material 18 upward. The inner bottle 12 is sealed with the inner sealing material 17 and the plate sealing material 18.
In the inner bottle 12, a plurality of vertically extending longitudinal passage grooves 12c formed continuously from the lower surface of the flange portion 12a to the outer surface of the shoulder portion via the outer surface of the neck portion are annularly arranged at equal intervals. In this embodiment, for example, four vertical passage grooves 12c are provided. However, the number is not particularly limited, and 2 to 8 is preferable. This vertical passage groove 12 c serves as a passage for the contents C filled in the stock solution chamber S 1 between the outer bottle 11 and the inner bottle 12. In addition, you may make it provide the vertical channel | path groove | channel used as the path | route of the content C in the inner surface of the neck part of the outer bottle 11, or the inner surface of a neck part and a shoulder part. Further, it may be provided on both the inner surface of the outer bottle 11 and the outer surface of the inner bottle 12. In addition, it is only necessary to form a vertical passage that communicates the stock solution chamber S1 and the outside air (valve assembly 13) between the outer bottle 11 and the inner bottle 12.
The inner bottle 12 is also preferably transparent or translucent so that the inside can be visually recognized.

Such a double bottle comprising the outer bottle 11 and the inner bottle 12 is formed with an outer preform for the outer bottle having a screw 11a formed at the neck and a flange 12a, an inner cylindrical portion 12b and a vertical passage groove 12c at the neck. The inner preform for the inner bottle is individually molded by injection molding or the like, and the inner preform for the inner bottle is inserted into the outer preform for the outer bottle to prepare a two-layer preform. Next, this bilayer preform is molded simultaneously with the portions below the shoulders of the outer bottle 11 and the inner bottle 12 by biaxial stretching blow or the like. Thereby, the outer shape of the inner bottle 12 becomes a shape that contacts the inner surface of the outer bottle 11, that is, substantially the same shape as the inner surface of the outer bottle 11.
The outer bottle and the inner bottle of the present invention are not limited to the double bottle, and the outer shape of the inner bottle 12 may be different from the inner surface shape of the outer bottle 11. Also, the method of assembling the double bottle is not limited to the biaxial stretch blow of the double preform, and an inner preform for the inner bottle is inserted into the outer bottle 11 and blow molded in the outer bottle 11. After the molding, the inner bottle 12 may be folded and inserted into the outer bottle 11.
As the outer bottle 11, it is preferable to use a synthetic resin such as polyethylene terephthalate or nylon. As the inner bottle 12, it is preferable to use a synthetic resin such as polyethylene terephthalate, polyethylene, or polypropylene. The outer bottle 11 and the inner bottle 12 may use the same synthetic resin, or may use different synthetic resins. However, when the double bottles are assembled from the double preforms or the inner preforms for the inner bottles in the outer bottles are blow-molded and assembled when the different materials are used, the stock solution is filled into the stock solution chamber S1. Therefore, when the inner bottle 12 is contracted, the outer surface of the inner bottle 12 is easily separated from the inner surface of the outer bottle 11, and the inner bottle 12 is easily contracted evenly. In particular, it is preferable when polyethylene terephthalate is used as the outer bottle 11 and polypropylene is used as the inner bottle 12.

  As shown in FIG. 2 a, the valve assembly 13 includes a valve mechanism 21 for communicating / blocking the stock solution chamber and the outside air, a valve holder 22 for closing the outer bottle 11 and the inner bottle 12, and the valve mechanism 21 in the valve holder 22. And a cap 23 for fixing the valve holder 22 to the outer bottle 11.

  The valve mechanism 21 includes a cylindrical stem 26, a stem rubber 27 that closes a stem hole 26a of the stem 26, and a spring 28 that constantly biases the stem 26 upward.

  As shown in FIG. 2b, the valve holder 22 includes a cylindrical housing 31, a ring lid portion 32 extending outward from the side surface of the housing, and a cylindrical shape provided on the lower surface thereof coaxially below the housing 31. A plug portion 33 and a cylindrical cylinder portion 34 extending downward from the plug portion 33 are provided.

The housing 31 is a cylindrical body having an open upper end, and a communication hole 31a that communicates the inside and the outside of the housing is formed on a side surface. A rubber support portion 31 b that supports the stem rubber 27 of the valve mechanism 21 is formed at the upper end of the housing 31. An annular recess 31c is formed on the outer peripheral surface of the housing 31 above the communication hole 31a.
The ring lid portion 32 is disposed above the flange portion 12a of the outer bottle 11 and the inner bottle 12 (see FIG. 1). A plurality of lateral passage grooves 32a are radially provided on the upper surface at equal intervals. The number of the lateral passage grooves 32a is preferably the same as the number of the longitudinal passage grooves 12c of the inner bottle 12, and the arrangement thereof is preferably provided so as to overlap the longitudinal passage groove 12c in plan view.
The plug part 33 is a cylindrical part inserted along the inner surface of the container holder 43 of the pressure adjusting mechanism 14 described later (see FIG. 3a). An annular inner seal holding portion 33 a that holds the inner seal material 17 is formed on the side surface. The bottom portion of the inner seal holding portion 33a (the side wall of the plug portion 33) compresses the inner seal material 17 (see FIG. 3a). The inner seal material 17 seals between the container holder 43 and the valve holder 22.
The cylinder portion 34 extends further downward from the lower end of the plug portion 33. The cylinder part 34 constitutes a part of the pressure adjusting mechanism 14 described later. In the lower part of the cylinder part 34, a slit 34a is formed which extends upward from the lower end. A holding claw 34b is formed at the lower end to hold the piston 41 of the pressure adjusting mechanism 14 (described later) from falling before the valve assembly 20 is attached to the double container. That is, the pressure adjustment mechanism 14 is fixed to the lower end of the valve assembly 13 via the cylinder portion 34 and is suspended from the opening of the inner bottle 12 inside.

  As shown in FIG. 2 c, the cap 23 includes a disc-shaped cover portion 36 that closes the opening of the housing 31 of the valve holder 22, and an upper cylinder portion that extends downward from the edge portion and is disposed on the outer periphery of the housing 31. 37, an annular ring portion 38 extending radially outward from the lower end thereof, and a lower cylinder portion 39 extending downward from the outer end thereof.

The cover part 36 prevents the stem rubber 27 from jumping upward. A center hole 36 a through which the stem 26 passes is formed in the center of the cover portion 36.
The upper cylinder portion 37 is a portion that holds the housing 31 of the valve holder 22 and forms a passage for contents between the housing 31. An engagement protrusion 37 a that engages with the annular recess 31 c of the housing 31 is formed on the inner surface of the upper cylinder portion 37. By sandwiching the valve holder 22 (housing 31) between the cover portion 36 and the engaging protrusion 37a, the valve mechanism 21 is fixed to the valve holder 22 (housing 31) and the valve holder 22 is held (see FIG. 2a). . That is, the cap 23 and the valve holder 22 can be integrated. The lower inner surface (the inner surface below the engaging projection 37a) of the upper cylindrical portion 37 forms an annular gap 35A with the outer peripheral surface of the housing 31 (see FIG. 2a). The gap 35 </ b> A communicates with the communication hole 31 a of the housing 31 and serves as a passage for the contents C.
The ring portion 38 is a portion that covers the upper surface of the ring lid portion 32 of the valve holder 22 so that the valve holder 22 does not come off the outer bottle 11 (see FIG. 2a). Since the lateral passage groove 32 a is formed in the ring lid portion 32, a plurality of radially extending passages are formed between the ring portion 38 and the ring lid portion 32. This passage serves as a passage for the contents C and communicates with the gap 35A.
The lower cylinder part 39 is a part that is connected to the outer bottle 11 and forms a passage for the contents C between the valve holder 22. The upper inner surface of the lower cylinder portion 39 is designed such that a gap 35B is opened from the outer end of the ring lid portion 32 of the valve holder 22 (see FIG. 2a). A screw 39 a that engages with the screw 11 a of the outer bottle 11 is formed on the inner surface of the lower cylinder portion 39. An inner cylindrical portion 39b having a slightly larger diameter than the annular step portion 11b2 is formed on the lower inner surface below the screw 39a of the lower cylindrical portion 39 and at the position of the outer seal holding portion 11b of the outer bottle 11. The inner cylindrical portion 39b is a portion that compresses the outer sealing material 16 in the radial direction between the outer cylindrical portion 11b1 of the outer bottle 11 (see FIG. 1).

  The valve assembly 13 configured as described above is configured so that the stock solution chamber S1 (vertical passage groove 12c) and the outside air are placed between the lower cylindrical portion 39 of the cap 23 and the valve holder 22 as shown by a thick arrow in FIG. The gap 35B, the lateral passage groove 32a between the ring portion 38 of the cap 23 and the ring lid portion 32 of the valve holder 22, the gap 35A between the upper cylindrical portion 37 of the cap 23 and the outer peripheral surface of the housing 31, and the communication of the housing 31 The hole 31a and the stem 26 are communicated.

As shown in FIG. 3a, the pressure adjusting mechanism 14 is an aerosol container filled with the above-described cylinder portion 34, a piston 41 accommodated in the cylinder portion 34, and a high-pressure gas inserted into the lower end of the cylinder portion 34. (Gas container) 42 and a container holder 43 suspended from the opening of the inner bottle are provided. In the pressure adjustment mechanism 14, the space in the cylinder portion 34 surrounded by the lower surface of the housing 31 and the piston 41 serves as the reference pressure chamber SP, the inside of the aerosol container 42 serves as the high-pressure chamber HP, and the valve of the aerosol container 42 serves as a valve. It becomes.
The piston 41 moves up and down while being in close contact with the inner surface of the cylinder portion 34. That is, the piston 41 seals the pressurizing chamber S2 and also the reference pressure chamber SP. The reference pressure chamber SP is compressed and expanded as the piston 41 moves up and down in the cylinder portion 34. Note that, by compressing the inside of the reference pressure chamber SP, the internal air is compressed, and the piston 41 receives a reaction force.
The aerosol container 42 includes a pressure-resistant container 42a, an aerosol valve 42b for closing the opening, and a push button 42c attached to the stem 42b1 of the aerosol valve 42b. Examples of the pressure agent P filled in the pressure vessel 42a include compressed gases such as nitrogen, carbon dioxide, and compressed air, and the pressure is increased to 0.6 to 6 MPa (gauge pressure). By pressing the push button 42c and lowering the stem 42b1, the aerosol valve 42b is opened, and the pressurizing agent P in the pressure-resistant container 42a is ejected from the discharge port 42c1 of the push button 42c. The aerosol container 42 may be fixed to the cylinder portion 34 by engaging a holding claw 34b of the cylinder portion 34 with an annular recess 42d formed on the outer peripheral surface of the aerosol valve 42b. At this time, the piston 41 is disposed on the push button 42c of the aerosol container 42. In addition, if it comprises so that the stem 42b1 of the aerosol valve 42b and the piston 41 may interlock | cooperate, it is not necessary to provide the push button 42c in particular.

  The container holder 43 stabilizes the position of the aerosol container 42 when the valve assembly 13 is attached to the double bottle and facilitates engagement with the cylinder portion 34. The container holder 43 holds the aerosol container 42 even after the valve assembly 13 is attached. This makes it easier to operate the piston 41 and the push button. Specifically, it includes a cylindrical holder main body 43a, a flange portion 43b formed at the upper end thereof, and a bottom portion 43c that closes the lower end thereof. The upper inner surface of the holder main body 43a is a cylinder, and is a portion that compresses the inner seal material 17 in the radial direction. A slit 43d that communicates between the holder main body 43a and the inner bottle 12 is formed in the lower portion of the holder main body 43a. And the positioning rib 43e for positioning the aerosol container 42 is radially formed in the lower inner surface of the holder main body 43a. In the container holder 43, the flange portion 43 b is held between the upper end of the outer bottle 11 (the flange portion 12 a of the inner bottle 12) and the ring lid portion 32 of the valve holder 22 of the valve assembly 13. The lower surface of the flange portion 43b is a portion that compresses the annular plate sealing material 18 downward.

The pressure adjustment mechanism 14 configured as described above operates according to the difference between the pressure in the reference pressure chamber SP and the pressure in the inner bottle 12 (pressure chamber S2). Specifically, as shown in FIG. 3b, when the pressure in the reference pressure chamber SP becomes larger than the pressure in the inner bottle 12, the piston 41 moves so that the reference pressure chamber SP expands, that is, the piston 41 descends. . At this time, the internal pressure of the reference pressure chamber SP decreases. Therefore, the push button 42 c of the aerosol container 42 is pushed, and the pressurizing agent P is supplied from the aerosol container 42 into the inner bottle 12. When the pressurizing agent P is sufficiently supplied into the inner bottle 12 and the pressure in the reference pressure chamber SP and the pressure in the inner bottle 12 become substantially the same, the piston 41 is moved by the spring force (return force) of the aerosol valve 42b. Moves to the original position so that the reference pressure chamber SP contracts, that is, the piston 41 rises. Therefore, the push button 42c of the aerosol container 42 is restored, and the aerosol valve 42b is also shut off.
A spring that presses the piston 41 downward may be placed in the cylinder 34. Further, a pressure position conversion device such as a diaphragm may be used instead of the piston.
The pressure at which the pressure adjusting mechanism operates can be adjusted by the pressure and volume in the reference pressure chamber SP, the spring in the aerosol valve, the aforementioned spring, and the like. For example, it is preferable to adjust so that the gauge pressure of the discharge container 10 is 0.1 to 0.5 MPa, and further 0.2 to 0.4 MPa. That is, it is preferable that the pressure adjusting mechanism is activated when the pressure becomes smaller than that.

Next, a method for assembling the discharge container 10 will be described.
First, a double bottle comprising the outer bottle 11 and the inner bottle 12 is formed. At this time, it is preferable to shrink the inner bottle 12 once in advance so that the stock solution chamber S1 is reliably formed when the contents C are filled. Next, the container holder 43 containing the aerosol container 42 is housed in the inner bottle 12. On the other hand, a cap member is prepared by fixing the cap 23 to the valve holder 22 and inserting the piston 41 into the cylinder portion 34 of the valve holder 22 (see FIG. 4a).
This lid is fixed to the double bottle. At this time, the aerosol container 42 is connected to the cylinder portion 34, and at the same time, the push button 42c of the aerosol container 42 pushes up the piston 41, so that the reference pressure chamber SP is sealed and compressed. However, since the inner bottle 12 is not yet filled with the pressurizing agent P, the piston 41 rises above the height at which the aerosol valve 42b of the aerosol container 42 is opened (a state where the push button 42c is slightly depressed). do not do. That is, as shown in FIG. 4b, the aerosol valve 42b is opened, and the pressurizing agent P is injected from the push button 42c of the aerosol container 42, and passes through the slit 34a of the cylinder portion 34 and the slit 43d of the container holder 43. It is supplied into the inner bottle 12. When the inside of the inner bottle 12 reaches a predetermined pressure, the piston 41 is pushed up to a height at which the aerosol valve 42b is closed, and the pressure in the reference pressure chamber SP and the pressure in the inner bottle 12 are substantially balanced to inject the aerosol container 42. Stops (see FIG. 1).
The discharge container 10 may be assembled by hooking the aerosol container 42 on the cylinder portion 34 of the valve holder 22. Specifically, when connecting the lid member and the double bottle, the aerosol container 42 is engaged with the holding claw 34b of the cylinder part 34 in the annular recess 42d of the aerosol container 42 below the piston 41 in the cylinder part 34. . Then, the lid member provided with the aerosol container 42 and the double bottle into which the container holder 43 is inserted are connected or fixed while the aerosol container 42 is inserted into the container holder 32. This assembly method is preferred when the double bottle is large.

Thus, the discharge container 10 can be filled with the pressurizing agent P in the inner bottle 12 only by assembling, and no special pressurizing agent filling facility is required. Moreover, after assembling the discharge container 10, the internal pressure of the inner bottle 12 can be controlled to be constant as will be described later. Discharge products using conventional compressed gas as a pressurizing agent (aerosol products) have a pressure drop of 0.6 to 1.0MP so that the entire content can be discharged because the pressure decreases as the content decreases with use.
A pressurizing agent is filled so as to be a (gauge pressure). In addition, since the pressurizing agent is filled at a pressure higher than the aforementioned product pressure, the outer bottle is required to have a high pressure resistance, and a large amount of the raw material of the outer bottle is used. Since the discharge container of the present invention can be assembled and filled with a pressurizing agent, and further, the internal pressure can be controlled within a range of, for example, 0.1 to 0.5 MPa (gauge pressure). The load is small, the outer bottle 11 can be thinned to reduce the amount of raw material used, and the load on the environment is reduced.
In addition, the filling of the contents C into the stock solution chamber S1 may be performed before the valve assembly 13 is fixed to the double bottle. Also good. In particular, when it is performed before the valve assembly 13 is fixed, the double bottle (the outer bottle 11 and the inner bottle 12), the aerosol container 42 and the container holder 43 can be refilled products. In the case of a refill product, for example, it is preferably sealed with a lid member 45 as shown in FIG. 6c. Thereby, the valve assembly 13 and the like can be reused. Further, it is possible to replace only the aerosol container 42.

Next, how to use the discharged product is shown. As shown in FIG. 5a, the contents C can be discharged by the pressure of the inner bottle 12 by depressing the stem 26 with a push button (not shown) or the like and opening the valve mechanism 21 as shown in FIG. By discharging the contents C, when the inner bottle 12 expands and the inner pressure of the inner bottle 12 decreases, the pressure adjustment mechanism 14 automatically operates as shown in FIG. Is supplied into the inner bottle 12,
When the pressure in the inner bottle 12 is balanced with the reference pressure chamber SP, the supply of the pressurizing agent P automatically stops. Each time the content C is discharged, the supply step and the supply stop step of the pressurizing agent P are automatically performed, so that the content C can be discharged at the same momentum to the end.

After discharging the entire content C, as shown in FIG. 6a, the cap 23 is turned to cover the double bottle (the outer bottle 11 and the inner bottle 12) and the container holder 43 (pressure excluding the container holder 43). The adjustment mechanism 14) is slightly raised. Specifically, the lid member is formed so that the inner seal member 17 held by the inner seal holder 33a of the valve holder 22 is detached from the inner surface of the holder main body 43a of the container holder 43 while maintaining the seal structure of the outer seal member 16. To raise. Thereby, the sealing by the inner sealing material 17 is released, and the pressurizing chamber S2 and the inside of the housing 31 of the valve assembly 13 are communicated. Therefore, the pressurizing agent P in the pressurizing chamber S2 can be guided into the housing 31 without being jetted outside. Thereafter, the pressurizing agent P can be safely discharged to the outside by pushing down the stem 26 with a push button or the like (see the thick arrow in FIG. 6a). At this time, since the internal pressure of the pressurizing chamber S2 is lower than the internal pressure of the reference pressure chamber SP, the piston 41 is lowered and the aerosol container 42 is also opened. Therefore, the pressurizing agent P in the gas container (aerosol container 42) can also be discharged to the end.
When the aerosol container 42 is not fixed to the holding claw 34 a of the cylinder portion 34, the aerosol container 42 is supported by the bottom 43 c of the container holder 43 as shown in FIG. Further, the piston 41 descends and exceeds the slit 34 a of the cylinder part 34. Therefore, the reference pressure chamber SP and the pressurizing chamber S2 communicate with each other, and the pressurizing chamber S2 can be discharged without discharging the pressurizing agent P in the aerosol container 42 (see the bold arrow in FIG. 6b). In this case, the aerosol container 42 can be reused.

The discharge container 50 of FIG. 7 includes an outer bottle 11, an inner bottle 12 accommodated therein, a valve assembly 51 that closes the outer bottle 11 and the inner bottle 12, and an inner bottle, And a pressure adjusting mechanism 52 for adjusting. The pressure adjustment mechanism 52 is attached to the lower end of the valve assembly 51 and is suspended from the opening of the inner bottle 12.
In the discharge container 50, the space between the outer bottle 11 and the inner bottle 12 is the stock solution chamber S1, the space in the inner bottle 12 is the pressurizing chamber S2, the stock solution chamber S1 is filled with the stock solution C, and the inner bottle 12 The pressurizing chamber S2 is filled with a pressurizing agent to form a discharge product. The discharge product (discharge container 50) uses a push button 53 that closes the passage between the pressurizing chamber S2 and the outside air and opens the passage between the stock solution chamber S1 and the outside air.
The outer bottle 11 and the inner bottle 12 are substantially the same as the discharge container 10 of FIG.

  As shown in FIG. 8a, the valve assembly 51 includes a valve mechanism 56, an outer bottle 11 and an inner bottle 12 that allow the undiluted solution chamber S1 and the outside air and the pressurizing chamber S2 and the outside air to pass through independently and simultaneously shut off / communicate. A closing valve holder 57 and a cap 23 for fixing the valve mechanism 56 in the valve holder 57 and fixing the valve holder 57 to the outer bottle 11 are provided. The cap 23 is substantially the same as the cap 23 of the valve assembly 13 of the discharge container 10 of FIG.

  The valve mechanism 56 includes two independent first stem passages 56a to 56b and stems 61 having first and second stem holes 61a and 61b communicating with the passages, respectively. An annular first stem rubber 62a that closes the first stem hole 61a, an annular second stem rubber 62b that closes the second stem hole 61b, an elastic body 63 that constantly biases the stem 61 upward, and a first stem It is provided between the rubber 62a and the second stem rubber 62b, and includes a cylindrical support member 64 that supports them.

The stem 61 is formed by coaxially stacking an inner cylinder part 65a and an outer cylinder part 65b whose lower ends are closed, and the inner cylinder part 65a projects both above and below the outer cylinder part 65b. An annular space between the inner cylinder portion 65a and the outer cylinder portion 65b constitutes the first stem inner passage 56a, and a columnar space in the inner cylinder portion 65a coaxial with the first stem inner passage 56a is the first space. A two-stem passage 56b is formed. The first stem hole 61a is a hole formed so as to penetrate the outer cylinder portion 65a in the radial direction so as to communicate with the lower portion of the first stem inner passage 56a. The second stem hole 61b connects the inner cylinder portion 65a below the first stem hole 61a (the inner cylinder portion 65a protruding downward from the outer cylinder portion 65b) so as to communicate with the lower portion of the second stem inner passage 56b. It is a hole formed through in the radial direction.
The outer ends of the first stem rubber 62a and the second stem rubber 62b are supported by the support member 64 in the valve holder 57, respectively, and the inner ends close the first stem hole 61a and the second stem hole 61b. As the stem 61 moves downward, the first stem hole 61a and the second stem hole 61b are opened from the inner ends of the first stem rubber 62a and the second stem rubber 62b.
The elastic body 63 is formed integrally with a housing 66 of a valve holder 56 described later. Specifically, it is composed of a plurality of leaf springs 66g formed so as to protrude upward at the bottom of the housing 66 (see FIG. 8b). However, an independent spring may be disposed between the bottom of the housing 66 and the stem 61 of the valve mechanism 56.
The support member 64 is formed with a slit 64a communicating between the inside and the outside.

As shown in FIG. 8 b, the valve holder 57 includes a cylindrical housing 66, a ring lid portion 67 extending outward from the inner side surface of the housing 66, and a cylindrical shape provided on the lower surface thereof coaxially with the housing 66. And a high-pressure chamber main body 68.
The housing 66 has a first communication hole 66a that communicates the inside and the outside of the housing on the side surface, and a second communication hole 66b that communicates the inside and the outside of the housing at the lower end. A part of the housing 66 (at least a part below the first communication hole 66a) is inserted into the inner bottle 12, and the inner bottle 12 is sealed by the lower side surface of the housing 66 (see FIG. 7). An annular inner seal holding portion 66 c that holds the inner seal material 17 that seals between the inner bottle 12 and the valve holder 57 is formed on the lower side surface of the housing 66. The bottom portion of the inner seal holding portion 66c compresses the inner seal material 17.
Further, a first rubber support portion 66d that supports the first stem rubber 62a of the valve mechanism 56 is formed at the upper end of the housing 66, and is an inner side surface of the first communication hole 66a and the second communication hole 66b. A second rubber support portion 66e that supports the second stem rubber 62b of the valve mechanism 56 is formed therebetween. Furthermore, the upper outer periphery of the first communication hole 66a of the housing 66 is enlarged through the step portion 66f. The step protrusion 66f is engaged with the engagement protrusion 37a of the cap 23, and the valve holder 56 and the cap 23 are fixed (see FIG. 8a). A plurality of leaf springs 66g constituting the elastic body 63 of the valve mechanism 56 are formed on the bottom of the housing 66 as described above.

  The inside of the housing 66 is divided into two spaces by the second stem rubber 62 b of the valve mechanism 56. That is, the inside of the housing 66 is divided into a space (upper space) between the first stem rubber 62a and the second stem rubber 62b and a space (lower space) below the second stem rubber 62b (see FIG. 8a). .

The ring lid portion 67 protrudes outward from the side surface of the housing 66 between the first communication hole 66a and the second communication hole 66b, and is disposed above the upper end of the outer bottle 11 and the flange portion 12a of the inner bottle 12. The A plurality of lateral passage grooves 67 a are provided radially on the upper surface of the ring lid portion 67 at equal intervals. The number of the lateral passage grooves 67a is the same as the number of the longitudinal passage grooves 12c of the inner bottle 12, and the arrangement thereof is provided so as to overlap the longitudinal passage groove 12c in plan view.
The high-pressure chamber main body 68 extends further downward from the lower end of the housing 66. The high-pressure chamber body constitutes a part of a pressure adjustment mechanism 52 described later.

Next, a passage between the stock solution chamber S1 of the valve assembly 51 and the upper space of the housing 66, and a passage between the pressurizing chamber S2 and the lower space of the housing 66 will be described with reference to FIG.
The stock solution chamber S1 (longitudinal passage groove 12c) includes a gap 35B between the cap 23 and the valve holder 57, a lateral passage groove 67a between the cap 23 and the ring lid portion 67 of the valve holder 57, and the cap 23, as indicated by thick arrows. And the outer space of the housing 66 of the valve holder 57 and the upper space in the housing 66 through the first communication hole 66a of the housing 66.
On the other hand, the pressurizing chamber S2 communicates with the lower space in the housing 66 through the second communication hole 66b of the housing 66 and the pressure adjusting mechanism 52 described later.

As shown in FIG. 9a, the pressure adjusting mechanism 52 includes a high-pressure chamber main body 68, a cylindrical cylinder portion 71 that closes the lower end thereof, and a valve that communicates / blocks between the high-pressure chamber main body 68 and the cylinder portion 71. A rod 72, a piston 73 that is interlocked with the valve rod 72 and accommodated in the cylinder portion 71, a lower lid portion 74 that closes the lower end of the cylinder portion 71, and a spring provided between the piston 73 and the lower lid portion 74. 75.
In the pressure adjusting mechanism 52, the high pressure chamber main body 68 is the high pressure chamber HP, the space between the piston 73 and the lower lid portion 74 in the cylinder portion 71 is the reference pressure chamber SP, and the valve rod 72 is a valve. The pressure in the reference pressure chamber is adjusted by the force of the spring 75 that presses the piston 73. Note that the internal pressure of the reference pressure chamber may be constant without providing the spring 75.

The cylinder portion 71 is a cylindrical body having an upper bottom for closing the lower end of the high-pressure chamber main body 68. A gas communication hole 71a is formed on the side surface. A center hole (gas supply hole) 71b is formed in the center of the upper base, and the high pressure chamber main body 68 is closed on the upper surface of the upper base, and the cylindrical engagement is tightly inserted into the high pressure chamber main body 68. A portion 71c is provided.
The valve rod 72 is a rod body that is inserted into the center hole 71b of the cylinder portion 71 so as to be movable up and down, and a disc-shaped retaining portion 72a is formed at the upper end thereof. A ring-shaped valve seal 76 is provided between the lower surface of the retaining portion 72 a and the upper bottom of the cylinder portion 71. That is, when the valve stem 72 is lowered, the retaining portion 72a of the valve stem 72 presses the upper bottom of the cylinder portion 71 via the valve seal 76, thereby closing the center hole 71b. On the other hand, when the valve stem 72 rises, the compression to the valve seal 76 by the retaining portion 72a is released, and the center hole 71b is opened.
Piston 73 is a plate-like thing which goes up and down, contacting the inner surface of cylinder part 71 closely. A valve engaging portion 73a that engages with the lower end of the rod body of the valve rod 72 is formed on the upper surface. The lower surface receives a spring 75. A ring-shaped sealing material 77 is provided on the side surface. That is, the reference pressure chamber SP is compressed / expanded by the piston 73 moving up and down in the cylinder portion 71.
The lower lid portion 74 is a member that closes the lower end of the cylinder portion 71 densely. A cylindrical engagement portion 74 a that closes the lower end opening of the cylinder portion 71 and is densely inserted into the cylinder portion 71 is formed on the upper surface. The upper surface of the lower lid portion 74 receives a spring 75.

  The pressure adjustment mechanism 52 configured as described above is a difference between the pressure applied to the piston 73 by the internal pressure of the reference pressure chamber and the spring force, and the pressure applied to the piston 73 by the pressure of the inner bottle 12 (pressure chamber S2). Operates with. Specifically, when the pressing force from the reference pressure chamber SP becomes larger than the pressing force from the inner bottle 12, the piston 73 moves so that the reference pressure chamber SP expands, that is, the piston 73 rises (see FIG. 9b). . Therefore, the valve stem 72 is raised, and the pressurizing agent P in the high pressure chamber HP is supplied into the inner bottle 12 through the center hole 71b and the gas communication hole 71a. On the other hand, when the pressurizing agent P is supplied into the inner bottle 12 and the pressing force from the inner bottle 12 becomes stronger, the piston 73 moves so that the reference pressure chamber SP contracts, that is, the piston 73 descends. . As a result, the valve stem 72 is lowered, the valve seal 76 between the retaining portion 72a of the valve stem 72 and the upper bottom of the cylinder portion 72 is compressed, and the center hole 71b is blocked (see FIG. 9a).

As shown in FIG. 8c, the push button 53 communicates a cylindrical stem engagement hole 53a formed on the lower surface, an injection hole 53b provided on the front surface, and the stem engagement hole 53a and the injection hole 53b. And an in-button passage 53c.
The stem engagement hole 53a includes a diameter-enlarged hole 81 into which the outer cylinder part 65b of the stem 61 is inserted, and a diameter-reduced hole 82 which is provided above and inserts the inner cylinder part 65a of the stem 61. The intra-button passage 53 c communicates with the upper portion of the diameter expansion hole 81. The upper end of the reduced diameter hole 82 is closed. The height of the reduced diameter hole 82 is smaller than the protruding amount of the inner cylinder portion 65a relative to the outer cylinder portion 65b (see FIG. 8a). Therefore, when the stem 61 is inserted into the stem engaging portion 53a, the upper portion of the inner cylindrical portion 65a is disposed in the reduced diameter hole 82, and the lower portion of the inner cylindrical portion 65a and the upper portion of the outer cylindrical portion 65b are enlarged. It is disposed in the hole 81. Therefore, the upper end of the inner cylindrical portion 65a is closed at the upper end of the reduced diameter hole 82, the upper portion of the outer cylindrical portion 65b communicates with the button inner passage 53c, and a space 85 surrounded by the enlarged diameter hole 81 and the inner cylindrical portion 65a is formed. (See FIG. 8a). A plug may be provided in the second stem passage 56b of the stem 61.

Next, the assembly method of the discharge container 50 is shown in FIG.
First, a double bottle comprising the outer bottle 11 and the inner bottle 12 is formed. At this time, it is preferable to shrink the inner bottle 12 once so that the stock solution chamber S1 is surely opened when the contents are filled. On the other hand, a lid member connecting the valve assembly 51 and the pressure adjusting mechanism 52 is prepared (see FIG. 10A). The connecting portions are preferably integrated by ultrasonic welding or the like.
This lid is fixed to the double bottle. Thereafter, the stem 61 is pushed down, and the pressurizing agent P is filled from the second stem passage 61b (see FIG. 10b). At this time, it is preferable to fill while closing the first stem passage 61a. That is, before the pressurizing agent P is filled, the pressurizing chamber SP has a greater force to push the piston 73 than the inner bottle 12, so that the central hole 71b is opened, and the pressurizing agent P has the central hole 71b and the central hole 71b. It is supplied into the inner bottle 12 through the gas communication hole 71a. When the inner bottle 12 is filled with the pressurizing agent P, the inner bottle 12 has a larger force to push the piston 73 than the pressurizing chamber SP, the piston 73 moves down together with the valve rod 72, and the center hole 71b is blocked. Is done. After that, the pressurized agent P is filled in the high pressure chamber HP, and the pressure in the high pressure chamber HP is expanded such that the outer surface of the inner bottle 12 is in contact with the inner surface of the outer bottle 11 (the state after the discharge of the contents C). However, it is set sufficiently high so as to be higher than the reference pressure chamber SP.
In addition, the filling of the contents into the stock solution chamber S1 may be performed before fixing the lid member connecting the valve assembly 51 and the pressure adjusting mechanism 52 to the double bottle, or after fixing to the double bottle, the stem 61. The first stem passage 61a may be filled.

Next, how to use the discharged product is shown. The usage method is that the stem 61 is pushed down by the push button 53 and the valve mechanism 56 is opened, whereby the contents C can be discharged by the pressure in the inner bottle 12 (see FIG. 11a). By discharging the contents C, when the inner bottle 12 expands and the inner pressure of the inner bottle 12 decreases, the pressure adjusting mechanism 52 operates as described above, and the pressurizing agent P is moved from the high pressure chamber HP into the inner bottle 12. To be compensated. When the pressure in the inner bottle 12 increases, the piston 73 moves downward, and the supply of the pressurizing agent P is stopped. Each time the contents C are discharged, the pressurizing agent supply process and the supply stop process are automatically performed, so that the contents C can be discharged at the same momentum.
After the contents C are discharged, as shown in FIG. 11B, the pressurizing agent 53 in the high-pressure chamber can be discharged to the outside by removing the push button 53 and pushing down the stem 61. Accordingly, since the central hole 71b of the pressure adjusting mechanism 52 is also opened, the pressurizing agent in the inner bottle 12 can be discharged from the second stem passage 61b of the stem 61 via the gas communication hole 71a and the central hole 71b. it can. Furthermore, by removing the cap 23 from the outer bottle 11, it can be separated and discarded according to the material.

The discharge container 90 of FIG. 12 is different from the discharge container 10 of FIG. 1 in that the container holder is omitted and the aerosol container 42 (gas container) is placed on the bottom of the inner bottle 12. Specifically, the outer bottle 11, the inner bottle 12 accommodated therein, the valve assembly 13 that closes the outer bottle 11 and the inner bottle 12, and the pressure adjustment mechanism that is accommodated in the inner bottle and adjusts the inner pressure of the inner bottle. 91. The pressure adjustment mechanism 91 is attached to the lower end of the valve assembly 13. The outer bottle 11 and the inner bottle 12 are substantially the same as the discharge container 10 of FIG. The space between the outer bottle 11 and the inner bottle 12 of the discharge container 90 becomes the stock solution chamber S1, and the space inside the inner bottle 12 becomes the pressurizing chamber S2.
The valve assembly 13 is substantially the same as the valve assembly 13 of the discharge container 10 of FIG. 1 except that the cylinder part 34 is longer than the cylinder part 34 of the valve assembly 13 of the discharge container 10 of FIG. is there. The length of the cylinder part 34 in FIG. 12 may be the same as that of the cylinder part 34 in FIG.
The inner seal material 17 held by the inner seal holding part 33a of the plug part 33 of the valve assembly 13 is compressed between the bottom part of the inner seal holding part 33a (side wall of the plug part 33) and the inner surface of the neck part of the inner bottle 12. Then, the space between the pressurizing chamber S2 and the valve assembly 13 is sealed.

The pressure adjustment mechanism 91 includes the above-described cylinder part 34, the piston 41 accommodated in the cylinder part 34, and an aerosol container (gas container) 42 filled with high-pressure gas inserted into the lower end of the cylinder part 34. The aerosol container 42 is placed on the bottom of the inner bottle 12. The piston 41 and the aerosol container (gas container) 42 are substantially the same as the pressure adjustment mechanism 14 of FIG. In the pressure adjusting mechanism 91, the space in the cylinder portion 34 becomes the reference pressure chamber SP, the inside of the aerosol container 42 becomes the high pressure chamber HP, and the valve of the aerosol container 42 becomes the valve.
The pressure adjusting mechanism 91 is also operated by the pressure difference between the reference pressure chamber SP and the pressure in the inner bottle 12 (pressurizing chamber S2), similarly to the pressure adjusting mechanism 14 of the discharge container in FIG. In order to place the aerosol container 42 on the inner bottle 12, it can be assembled by placing the aerosol container 42 on the inner bottle 42 and then attaching the valve assembly 13 as described later. And the aerosol container 42 are easily connected.

A method for assembling the discharge container 90 will be described below.
First, a double bottle comprising the outer bottle 11 and the inner bottle 12 is formed. Next, the aerosol container 42 is stored in the inner bottle 12. On the other hand, a cap member is prepared by fixing the cap 23 to the valve holder 22 and inserting the piston 41 into the cylinder portion 34 of the valve holder 22 (see FIG. 13a).
This lid is fixed to the double bottle. At this time, the aerosol container 42 is connected to the cylinder portion 34, and at the same time, the push button 42c of the aerosol container 42 pushes up the piston 41, so that the reference pressure chamber SP is sealed and compressed (see FIG. 13b). Similarly to the discharge container 10 of FIG. 1, at the same time, the aerosol valve 42b of the aerosol container 42 is opened, and the pressurizing agent P is supplied into the inner bottle 12 from the push button 42c of the aerosol container 42. When the inside of the inner bottle 12 reaches a predetermined pressure, the piston 41 is pushed up to a height at which the aerosol valve 42b is closed, and the pressure in the reference pressure chamber SP and the pressure in the inner bottle 12 are substantially balanced to inject the aerosol container 42. Stops.
The discharge container 90 may be assembled by hooking the aerosol container 42 on the cylinder portion 34 of the valve holder 22. Specifically, when connecting the lid member and the double bottle, the aerosol container 42 is engaged with the holding claw 34b of the cylinder part 34 in the annular recess 42d of the aerosol container 42 below the piston 41 in the cylinder part 34. . And the lid | cover material provided with this aerosol container 42 and a double bottle are connected, accommodating the aerosol container 42 in the inner bottle 12. FIG. This assembly method is preferred when the double bottle is large.

As described above, the discharge container 90 can be filled with the pressurizing agent P in the inner bottle 12 only by assembling, similarly to the discharge container 10 of FIG. 1, and no special pressurizing agent filling facility is required. Moreover, after assembling the discharge container 10, the internal pressure of the inner bottle 12 can be controlled to be constant as will be described later.
The filling of the contents C into the stock solution chamber S1 may be performed either before or after the valve assembly 13 is fixed to the double bottle. The discharge container 90 can also use the contents C filled in the outer bottle 11, the inner bottle 12, the aerosol container 42 and the stock solution chamber S1 as a refill product. In the case of a refill product, it is preferable to seal with a lid material 45 as shown in FIG. 5 as in the case of the discharge container 10 of FIG.
In the discharge container 90 of FIG. 12, the aerosol container 42 is placed on the bottom of the inner bottle 12, but the aerosol container 42 may be suspended in the inner bottle 12 without being supported on the bottom.

In the discharge container 100 of FIG. 14, the outer shape of the inner bottle 102 is not the same as the inner shape of the outer bottle 11, and the inner bottle 102 is made of an elastic material. Specifically, the outer bottle 11, the inner bottle 102 accommodated therein, the valve assembly 13 that closes the outer bottle 11 and the inner bottle 102, and the pressure adjustment mechanism that is accommodated in the inner bottle and adjusts the inner pressure of the inner bottle. 14. A push button 105 having a mechanical breakup mechanism is attached to the stem of the valve assembly 13.
The outer bottle 11 and the pressure adjustment mechanism 14 are substantially the same as the discharge container 10 of FIG. The valve assembly 13 is substantially the same as the discharge container of FIG. 1 except that the holding claw 34 b of the cylinder portion 34 of the valve holder 22 does not engage with the aerosol container 42.

The inner bottle 102 is a bottomed cylindrical elastic bottle provided with a cylindrical main body 102a. At the upper end of the inner bottle 102, a flange portion 102b that is disposed at the upper end of the outer bottle 11 and protrudes outward is formed. A plurality of grooves 102b1 extending radially inward from the outer edge are formed on the lower surface of the flange portion 102b. The inner surface of the main body 102 a of the inner bottle 102 is configured to fit into the holder main body 43 a of the container holder 43 of the valve assembly 13. A gap serving as a passage for contents is provided between the outer surface of the main body 102 a of the inner bottle 12 and the inner surface of the neck portion of the outer bottle 11.
The flange portion 102b of the inner bottle 102 is disposed between the upper end of the outer bottle 11 and the flange portion 43b of the container holder 43, and is elastically deformed. Therefore, the gap between the inner bottle 102 and the container holder 43 is sealed by the flange portion 102 b of the inner bottle 102. However, an annular sealing material may be separately provided between them.
Examples of the inner bottle 102 having such elasticity include rubbers such as silicone rubber, urethane rubber, isoprene rubber, ethylene propylene rubber, ethylene propylene diene rubber, and styrene butadiene rubber, urethane type, ester type, styrene type, olefin type, and butadiene. And synthetic elastomers such as polyethylene, nylon and eval, and mixed materials thereof. The inner bottle 102 is formed separately from the outer bottle 11.

Next, a method for assembling the discharge container 100 will be described.
First, the contents C are filled into the outer bottle 11 (see FIG. 15a). Next, the inner bottle 102 is fitted into the holder main body 43a of the container holder 43, the aerosol container 42 is accommodated in the container holder 43, and a double bottle is prepared. On the other hand, a cap member is prepared by fixing the cap 23 to the valve holder 22 and inserting the piston 41 into the cylinder portion 34 of the valve holder 22 (see FIG. 15b).
This lid is fixed to the double bottle. Thereby, similarly to the discharge container 10 of FIG. 1, the pressure adjustment mechanism 14 operates and the inside bottle 102 becomes a predetermined pressure (see FIG. 14).
Next, the method of using the discharge container 100 is the same as that of the discharge container 10 shown in FIG. 1. As shown in FIG. 16 a, the push button 105 attached to the stem is pushed down, and the contents C are discharged by the internal pressure of the inner bottle 102. . When the contents C are discharged here, the inner bottle 102 having elasticity expands and the internal pressure decreases. However, the pressure adjusting mechanism 14 is automatically operated accordingly, and the pressure in the inner bottle 102 is adjusted. The discharge container 100 is also automatically supplied with the pressurizing agent P every time the content C is discharged, so that the content C can be discharged at the same moment until the end.
After the contents C are discharged, the pressurizing agent P can be safely discharged in the same manner as the discharge container 10 of FIG. Specifically, as shown in FIG. 16 b, the cap 23 is turned and the lid (the pressure adjusting mechanism 14 excluding the container holder 43) is slightly attached to the double bottle (the outer bottle 11 and the inner bottle 102) and the container holder 43. Raise. Accordingly, the seal structure (compression of the inner seal material 17) between the container holder 43 and the cylinder portion 34 can be released while the seal structure of the outer seal material 16 is maintained. As a result, the inner bottle 102 (pressurizing chamber S2) communicates with the inside of the housing 31 of the valve assembly 13. Therefore, by operating the push button 105, the pressurizing agent P can be safely discharged to the outside. Since the aerosol container 42 is not connected to the holding claw 34b of the cylinder portion 34 of the valve holder 22, the aerosol container 42 is not opened when the pressurizing agent P is discharged. Therefore, the aerosol container 42 can be reused.

The discharge container 110 in FIG. 17 uses a metal outer bottle 111, and the other configuration is substantially the same as the discharge container 100 in FIG. Specifically, the outer bottle 111, the inner bottle 102 accommodated therein, the valve assembly 13 that closes the outer bottle 111 and the inner bottle 102, and the pressure adjustment mechanism that is accommodated in the inner bottle and adjusts the inner pressure of the inner bottle. 14, and a push button 105 having a mechanical breakup mechanism is attached to the stem of the valve assembly 13.
The outer bottle 111 is a bottomed cylindrical pressure-resistant bottle having a cylindrical body, a tapered shoulder, and a cylindrical neck. A screw 111a is formed on the outer periphery of the neck, and a bead 111b is formed on the upper end of the neck. The outer sealing material 16 is disposed in a cylindrical portion below the neck screw 111a.
The outer bottle 111 is integrally formed by forming a body part by impact processing of metal slag, squeezing the upper part to form a shoulder part and a neck part, and finally forming a curl part and a screw. It is a can.
Such a metal can can be employed in other embodiments in which the outer shape of the inner bottle is substantially the same as the inner diameter of the outer bottle. In that case, a double bottle of the outer bottle 111 and the inner bottle 12 can be assembled by inserting a preform for the inner bottle into the outer bottle 111 and blow-molding the preform for the inner bottle in the outer bottle 111. The inner bottle 12 may be folded and inserted into the outer bottle 111. This discharge container 110 also has the same effect as the discharge container 100 of FIG.

S1 Stock solution chamber S2 Pressurization chamber SP Reference pressure chamber HP High pressure chamber 10 Discharge container 11 Outer bottle 11a Screw 11b Outer seal holding portion 11b1 Outer cylindrical portion 11b2 Annular step portion 11c Annular projection 12 Inner bottle 12a Flange portion 12b Inner cylindrical portion 12c Vertical Passage groove 13 Valve assembly 14 Pressure adjustment mechanism 16 Outer seal material 17 Inner seal material 21 Valve mechanism 22 Valve holder 23 Cap 26 Stem 26a Stem hole 27 Stem rubber 28 Spring 31 Housing 31a Communication hole 31b Rubber support portion 31c Annular recess 32 Ring Lid portion 32a Horizontal passage groove 33 Plug portion 33a Inner seal holding portion 34 Cylinder portion 34a Slit 34b Holding claws 35A, 35B Clearance 36 Cover portion 36a Center hole 37 Upper tube portion 37a Engagement projection 38 Ring portion 39 Lower tube portion 39a Screw 9b Inner cylindrical part 41 Piston 42 Aerosol container 42a Pressure-resistant container 42b Aerosol valve 42b1 Stem 42c Push button 42c1 Discharge port 42d Annular recess 43 Container holder 43a Holder body 43b Flange part 43c Bottom 43d Slit 43e Positioning rib 45 Container 50 Assembly 52 Pressure adjusting mechanism 53 Push button 53a Stem engagement portion 53b Injection hole 53c Button passage 56 Valve mechanism 56a First stem passage 56b Second stem passage 57 Valve holder 61 Stem 61a First stem hole 61b Second stem hole 62a First stem rubber 62b Second stem rubber 63 Elastic body 64 Support member 64a Slit 65a Inner cylinder part 65b Outer cylinder part 66 Housing 66a First communication hole 66b Second connection Hole 66c Inner seal holding part 66d First rubber support part 66e Second rubber support part 66f Step part 66g Leaf spring 67 Ring cover part 67a Horizontal passage groove 68 High pressure chamber body 71 Cylinder part 71a Gas communication hole 71b Central hole 71c Cylindrical Engaging portion 72 Valve rod 72a Fastening portion 73 Piston 73a Valve engaging portion 74 Lower lid portion 74a Engaging portion 75 Spring 76 Valve seal 77 Side seal material 81 Expanded hole 82 Reduced diameter hole 85 Clearance 90 Discharge container 91 Pressure adjusting device DESCRIPTION OF SYMBOLS 100 Discharge container 102 Inner bottle 102a Main body 102b Flange part 105 Push button 110 Discharge container 111 Outer bottle 111a Screw 111b Bead part

Claims (9)

An outer bottle, a flexible inner bottle accommodated therein, and a valve assembly having a valve mechanism that closes the outer bottle and the inner bottle,
A discharge container in which the stock solution chamber between the outer bottle and the inner bottle is filled with contents, and the pressurizing chamber in the inner bottle is filled with a pressurizing agent,
A pressure adjustment mechanism is provided that is housed in the inner bottle and raises to a predetermined pressure when the inner pressure of the inner bottle decreases,
Discharge container. The pressure adjusting mechanism is attached to the lower end of the valve assembly;
The discharge container according to claim 1. The pressure adjusting mechanism includes a high pressure chamber having a gas supply hole communicating with the inside of the inner bottle, a reference pressure chamber sealed at a predetermined pressure, and a reference pressure chamber according to the pressing pressure of the reference pressure chamber and the inner bottle. A piston that compresses and expands, and a valve that blocks and communicates with the gas supply hole in conjunction with the piston;
When the reference pressure chamber is compressed to be smaller than a predetermined volume by the piston, the valve blocks the gas supply hole,
The valve communicates with the gas supply hole when the reference pressure chamber is expanded by the piston to be larger than a predetermined volume;
The discharge container according to claim 1 or 2. The discharge container according to claim 3, wherein a gas container in which the high-pressure chamber and the valve are integrated is accommodated in the inner bottle. The pressure adjusting mechanism is formed at a lower part of the valve assembly, and includes a cylinder part that accommodates a piston, and a gas container is attached to a lower end of the cylinder part.
The discharge container according to claim 4. The bottom of the gas container is placed on the bottom of the inner bottle,
The discharge container according to claim 5. The pressure adjusting mechanism is housed suspended from the opening of the inner bottle, and includes a container holder for holding the gas container;
The container holder is formed with a slit that communicates the inside of the container holder with the inside of the inner bottle.
The discharge container according to claim 5. A discharge product manufacturing method for filling a discharge container according to claim 6 with a pressure agent,
Preparing the outer bottle and the inner bottle;
Storing the gas container in an inner bottle;
The pressure adjustment mechanism is operated by fixing a valve assembly to the outer bottle and the inner bottle, and the inner bottle is filled with a pressurizing agent from the gas container.
Manufacturing method of discharge products. A discharge product manufacturing method for filling a discharge container according to claim 7 with a pressure agent,
Preparing the outer bottle and the inner bottle;
A container holder holding the gas container is accommodated in the inner bottle,
The pressure adjustment mechanism is operated by fixing a valve assembly to the outer bottle and the inner bottle, and a pressure agent is filled into the inner bottle from the gas container.
Manufacturing method of discharge products.