JP2016222256A - Double container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container capable of unsealing an inner container without directly touching the inner container.SOLUTION: In a double container comprising an outer container 10 being compressed so as to have internal pressure, an inner container 20 housed in the outer container 10 and filled with a content C1 and a compression agent P1 and a valve assembly 30 attached to the outer container 10, the valve assembly 30 is equipped with a valve 40 capable of communicating the inside of the outer container 10 with the atmosphere, and the inner container 20 is equipped with unsealing means 21a performing unsealing by relatively increasing own internal pressure caused by the pressure reduction of the inside of the outer container 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a double container that houses an inner container in an outer container.

  For example, a two-component hair dye, a two-component perm agent, and a two-component adhesive are used for aerosol products that are filled in a container in a state where a plurality of contents are isolated, and the contents are mixed with each other as necessary. It is suitable when a two-component reaction type preparation such as an agent is used as the contents, and various types have been developed.

  For example, in Patent Document 1, the inner container is stored in an inverted state in the outer container, and the stem is operated to break the sealing lid that closes the mouth of the inner container, and the contents in the inner container are transferred to the outside. An aerosol device for mixing multiple liquids is disclosed that mixes the contents by letting them flow into a container.

  Further, in Patent Document 2, the other end of the breaking stem with one end positioned in the vicinity of the top plate of the inner container is struck against the floor or the like, and the top plate of the inner container is broken at one end of the breaking stem. An apparatus for mixing the filled contents and the contents filled in an external container is disclosed.

JP 2009-106813 A Japanese Patent No. 4290297

  However, the mechanism disclosed in Patent Document 1 must break the sealing lid with a working distance of the stem of only about 2 mm, and high-precision manufacturing is necessary to achieve reliable operation. Desired.

  Further, in the mechanism disclosed in Patent Document 2, it is necessary to hit a breaking stem in use, which is not easy to use, and the container may be damaged because a strong impact is applied to the container with the hitting. .

  That is, the method of directly touching the inner container to open the inner container has various problems.

  Then, it aims at provision of the double container which can open an inner container, without touching an inner container directly.

  The double container of the present invention includes an external container that is pressurized to have an internal pressure, an internal container that is accommodated in the external container and filled with contents and a pressurizing agent, and a valve assembly that is attached to the external container. The valve assembly includes a valve capable of communicating the inside of the outer container and the atmosphere, and the inner container is provided with an opening means for opening the container by a relative increase in its internal pressure caused by the reduced pressure in the outer container. It is characterized by having.

  Moreover, it is preferable that an inner container is a pouch and an opening means is a peripheral edge bonding part.

  Moreover, it is preferable that at least two inner containers are provided and different contents are filled in the inner containers. Alternatively, it is preferable that the inner container and the outer container are filled with different contents.

  Moreover, it is preferable that the valve assembly includes a valve capable of communicating the inside of the inner container and the atmosphere.

  Moreover, it is preferable to provide a discharge valve for discharging the contents in the external container.

  Further, it is preferable that a valve capable of communicating the inside of the external container and the atmosphere also serves as a discharge valve.

  Moreover, it is preferable that the internal container is provided with the partition part which partitions off the inside of an internal container.

  In the double container of the present invention, the inner container is provided with an opening means that opens due to a relative increase in its internal pressure caused by the reduced pressure in the outer container. When the pressure is reduced, the internal pressure of the internal container is apparently increased, the internal container is opened (ruptured), and the contents and the pressure agent filled in the internal container can be released into the external container. That is, the inner container can be opened simply by operating the valve, which is convenient. In addition, because the inside of the external container is only decompressed, the container is less likely to be damaged, and the valves used for general aerosol products are sufficient, so manufacture with the same precision as general aerosol products. Can do. When the inner container is opened, the contents are released vigorously by the pressure of the pressurizing agent, so that it is easy to mix in the outer container.

  Also, if the inner container is a pouch and the opening means is a peripheral bonded portion, the pressure required for opening can be easily adjusted by adjusting the width, material, adhesive, etc. of the bonded portion. be able to.

In addition, when at least two inner containers are provided and different contents are filled in the inner containers, each can be stably stored and the two contents can be mixed in the outer container at the time of use. Furthermore, even if one of the inner containers is unintentionally opened, mixing of the contents can be prevented, and stability can be improved.
Alternatively, if the inner container and the outer container are filled with different contents, it is not always necessary to provide two inner containers, and the cost can be reduced.

  Further, if the valve assembly includes a valve capable of communicating the inside of the inner container and the atmosphere, the contents and the pressurizing agent can be easily filled into the inner container.

  Moreover, if a discharge valve for discharging the contents in the outer container is provided, the mixed contents are discharged to the outside using the pressure of the pressurizing agent filled in the inner container. Can do. Further, since the contents can be mixed and discharged at a designed ratio, a desired effect can be obtained.

  Further, if a valve capable of communicating the inside of the external container and the atmosphere also serves as a discharge valve, the cost can be reduced.

Moreover, if the inner container is provided with a partition that partitions the inner container, a plurality of contents can be filled into one inner container, and versatility can be increased.

(A) which shows one Embodiment of the double container of this invention is a whole sectional view, (b) is a top view of a valve assembly, (c) is sectional drawing of upper part vicinity. (A) is an exploded end view in the vicinity of the upper part, and (b) is an enlarged end view of the valve for the inner container. It is sectional drawing of the upper part vicinity which shows the modification of embodiment shown in FIG. Furthermore, (a) which shows other embodiment is sectional drawing, (b) is a top view of a valve assembly. Furthermore, (a) which shows other embodiment is sectional drawing, (b) is a top view of a valve assembly. It is sectional drawing which shows other embodiment. It is sectional drawing which shows other embodiment.

  Next, the double container 1 of this invention is demonstrated in detail based on drawing. A double container 1 shown in FIG. 1a has a bottomed cylindrical outer container 10, two flexible inner containers 20 inserted therein, and valves for closing the outer container 10 and the inner container 20, respectively. The assembly 30 is constituted. The double container 1 separately accommodates different types of contents C1 and C2 in two inner containers 20, and mixes the contents C1 and C2 in the outer container 10 when used. It is assumed that the light is emitted inside and used as emergency lighting.

  As shown in FIG. 1a, the outer container 10 is a pressure-resistant container made of a synthetic resin having a cylindrical body part 10a, a tapered shoulder part 10b, a cylindrical neck part 10c, and a thick flange part 10d at the upper end. is there. The inner surface of the neck portion 10c and the inner surface of the flange portion 10d have a continuous cylindrical shape, and constitute an inner surface 10e of the opening. The outer container 10 is made of a light-transmitting synthetic resin made of, for example, polyethylene terephthalate, nylon, polypropylene, etc., and is expanded by blowing air into the interior while extending a cylindrical parison in the axial direction. Molded. However, it may be formed by injection molding.

  As shown in FIGS. 1a and 1c, the inner container 20 is a so-called pouch in which sheets are bonded together to form a bag, and includes a bag body 21 and a connecting member 22 attached to the opening of the bag body 21. It is configured. However, it is not particularly limited as long as it has flexibility.

  As the sheet of the bag body 21, synthetic resin sheets such as polyethylene, polypropylene, polyethylene terephthalate, nylon, and eval, vapor-deposited resin sheets obtained by vapor-depositing silica or alumina on the synthetic resin sheets, metal foil sheets such as aluminum or synthetic resin sheets, A laminated sheet in which at least two sheets selected from a vapor-deposited resin sheet and a metal foil sheet are laminated. The bag body 21 is formed by laminating a plurality of the sheets or by folding one sheet and then bonding the peripheral edge part by heat welding or adhesive. In addition, this bonding part 21a becomes an opening means. The bonding portion 21a is appropriately adjusted in width, material, adhesive, and the like so as to be peeled off (opened) by the pressure of the pressure agent P1 filled in the inner container 20 under atmospheric pressure. Further, the material of the sheet is appropriately selected according to the contents C1 and C2 to be filled, but the contents C1 and C2 can be stably stored as long as the material has a light shielding property.

The connecting member 22 is an integrally molded product of synthetic resin such as polyethylene or polypropylene.
As shown in FIG. 2a, the lower portion is provided with a sticking portion 23 for attaching the bag body 21, and the upper portion is connected to a connecting tube 41h at the lower end of the housing 41 of the inner container valve 40 described later. 24. The sticking part 23 has a substantially rhombus shape, a horizontal rib 23a extending in the horizontal direction is formed on the side surface, and a flange part 23b is formed on the upper end. The connecting portion 24 has a cylindrical shape, and a bottom portion 24a is formed at the lower end thereof. Further, an engaging portion 24b for engaging with a later-described valve holder 50 is formed at the upper end portion.

  As shown in FIG. 2 a, the valve assembly 30 covers two independent inner container valves 40, a valve holder 50 for receiving the inner container valves 40, and the inner container valve 40 and the valve holder 50. And a mountain cover 90 for fixing the inner container valve 40 to the valve holder 50.

  The internal container valve 40 is used for filling the internal container 20 with the contents C1 and C2 and the pressurizing agent P1, and the contents C1 and C2 and the pressurizing agent filled in the internal container 20 are used. It is a check valve that prevents the discharge of P1 to the outside. Specifically, as shown in FIG. 2b, the inner container valve 40 includes a cylindrical housing 41 to which the inner container 20 is coupled at the lower portion, and a valve body 42 that is inserted into the housing 41 so as to be movable up and down. An annular rubber 43 that closes between the housing 41 and the valve body 42, a spring 44 that constantly biases the valve body 42 upward, and a cover 45 that fixes the valve body 42 and the annular rubber 43 to the housing 41, It is composed of This is a conventionally known general valve.

  As shown in FIG. 2b, the housing 41 includes a cylindrical space 41a formed at the center. Further, the housing 41 has a communication hole 41 b communicating with the inner container 20 at the center of the bottom surface, and a rubber holding portion 41 c that holds the annular rubber 43 at the upper end. A flange portion 41d protruding outward is formed on the outer periphery of the upper end of the housing 41, and a first step portion 41e having a diameter decreasing downward is formed on the outer periphery of the middle portion of the housing 41. Furthermore, the 2nd step part 41f which diameter-reduces below is formed under the 1st step part 41e. Between the 1st step part 41e and the 2nd step part 41f, the ring-shaped valve gasket 41g which seals the valve 40 for internal containers and the valve holder 50 is provided. A cylindrical connecting cylinder 41 h that protrudes downward is formed at the lower end of the housing 41 in order to attach the connecting portion 24 (the dip tube 110 in other embodiments) of the inner container 20.

  As shown in FIG. 2b, the valve body 42 is a cylindrical body having a bottom, and an annular step 42a is formed at the upper end, and an annular rubber 43 is in contact with the annular step 42a. The valve body 42 has a length that does not protrude to the outside.

  The ring-shaped rubber 43 has a ring shape whose inner circumferential surface abuts on the annular step 42 a of the valve element 42, and the outer circumferential surface is held by a rubber holding portion 41 c at the upper end of the housing 41.

  The spring 44 is a metal helical spring, for example, and is supported by the lower end of the valve body 42 and the bottom surface of the housing 41.

  The cover 45 has a cup shape having an upper base 45a, and a central hole 45b through which the valve element 42 is passed is formed in the upper base 45a. The cover 45 is held by an upper bottom 45 a so that the annular rubber 43 does not protrude from the housing 41.

In this method of assembling the inner container valve 40, the valve body 42, the annular rubber 43 and the spring 44 are inserted into the housing 41 and fixed with a cover 45 so as to cover them. That is, while pressing the cover 45 in the direction toward the housing 41 (downward), the side surface 45c of the cover 45 located at the lower portion of the flange portion 41d of the housing 41 is annularly moved toward the housing 41 at several places or around the entire circumference. It is crimped (reduced in diameter) and fixed to the housing 41. As a result, the annular rubber 43 and the valve body 42 connected to the annular rubber 43 are fixed in the housing 41 in a state of being pressed against the cover 45 by the elastic force of the spring 44. It becomes a sealed state. The lower end 45d of the cover 45 is in a state of facing straight downward.

  The inner container valve 40 is configured such that, for example, the filling nozzle of the content filling device is pressed against the valve body 42 and the valve body 42 is lowered with respect to the housing 41, whereby the seal by the annular rubber 43 is released. 41 communicates with the atmosphere. In the present embodiment, since the contents C1 and C2 are not discharged from the inner container valve 40, the lowering of the valve body 42 is limited to the time when the contents C1 and C2 and the pressure agent P1 are filled. become. As the inner container valve 40, another check valve structure may be adopted.

  As shown in FIGS. 1c and 2a, the valve holder 50 includes a columnar base portion 60, a filling portion 70 formed so as to vertically penetrate the base portion 60, and the base portion 60 so as to penetrate vertically. It has two cylindrical holder parts 80 formed.

  As shown in FIG. 1 c, the base 60 includes a main body (lid portion) 61 and a seal portion (plug portion) 62. The upper surface 61a of the main body 61 includes a ring portion 61b whose peripheral edge rises upward. That is, the upper surface 61a of the main body 61 is slightly recessed from the ring portion 61b. The main body 61 includes a flange portion 61 c at the lower portion, and a gasket (O-ring) 62 b is used for the annular recess 62 a of the seal portion 62.

  As shown in FIG. 1c, the filling portion 70 is formed with a stem rubber holding portion 70a at the upper end. Further, the stem 71 is inserted, the stem rubber 72 is disposed in the stem rubber holding portion 70a, and the spring 73 is disposed so as to urge the stem 71 upward, so that the inside of the outer container 10 and the atmosphere can be communicated with each other. In addition, a valve (general aerosol valve: hereinafter referred to as a mixing operation valve) for discharging the pressurizing agent P2 filled between the outer container 10 and the inner container 20 to the outside is configured. This mixing operation valve 70 is for filling the external container 10 with the pressurizing agent P2, and discharges the pressurizing agent P2 filled in the external container 10 to the outside when not in use. It is a check valve, that is, a check valve. By providing the mixing operation valve 70, the filling operation of the pressurizing agent P2 between the outer container 10 and the inner container 20 and the release of the pressurizing agent P2 in the outer container 10 to the outside are facilitated. The stem rubber 72 is fixed by a mountain cover 90 as will be described later. At this time, the upper surface of the stem rubber 72 is positioned below the ring portion 61 b of the base portion 60.

As shown in FIG. 2a, the holder portion 80 is formed so as to penetrate the base portion 60 in the vertical direction, and is a portion that receives and holds the inner container valve 40, and includes an upper tube portion 81 and an upper tube portion thereof. A lower cylindrical portion 82 having a diameter reduced from that of 81, an annular step portion 83 in which the lower end of the upper cylindrical portion 81 and the upper end of the lower cylindrical portion 82 are continuous, and a cylinder protruding from the annular step portion 83 toward the upper cylindrical portion 81 A seal portion 84 having a shape. An annular groove 85 is formed between the upper cylinder portion 81 and the seal portion 84. The seal portion 84 is further composed of a cylindrical upper portion 84a and a cylindrical lower portion 84b having a diameter reduced from the upper portion, and the upper portion 84a and the lower portion 84b are continuous by a first taper step portion 84c.
Further, the seal portion 84 and the inner surface of the lower cylinder portion 82 are continuous by the second taper step portion 84d (annular step portion). An annular engagement portion 86 that engages with the engagement portion 24 b of the coupling portion 24 of the coupling member 22 is formed on the lower inner surface of the lower cylinder portion 82.

  The upper part of the inner container valve 40 is inserted into the upper cylinder part 81 and the lower part of the inner container valve 40 is inserted into the lower cylinder part 82 with respect to the holder part 80 configured as described above. Specifically, a portion below the second step portion 41 f of the inner container valve 40 is inserted into the lower cylinder portion 82. On the other hand, the gasket 41 g of the inner container valve 40 abuts on the first tapered step 84 c of the seal portion 84 to seal the holder portion 80. Further, the lower end 45 d of the cover 45 of the inner container valve 40 is inserted into the annular groove 85.

  The valve holder 50 is configured such that when the inner container valve 40 is inserted, the upper surface of the cover 45 of the inner container valve 40 is located slightly below the upper end of the ring portion 61 b of the base 60.

  As shown in FIG. 1c, the outer shape of the valve holder 50 is partially cut away, and a cutout surface 50a is formed on the side surface. In addition, the shape of the planar cross section of the mountain cover 90 fitted to the valve holder 50 is also a circle with a part cut away in accordance with the shape of the valve holder 50 as shown in FIG. A notch surface 90 a is formed corresponding to the notch surface 50 a of the valve holder 50. This notch surface 90a is a direction (position) alignment means and a direction confirmation means of the valve assembly 30 and the double container 1.

  As shown in FIGS. 1 c and 2 a, the mountain cover 90 fixes a cylindrical cover portion 91 that covers the inner container valve 40 and the valve holder 50, a flange portion 61 c of the valve holder 50, and the outer container 10. And a cylindrical fixing portion 92 having a diameter larger than that of the cover portion 91.

The cover portion 91 has three insertion holes 91 a through which the valve body 42 of the inner container valve 40 and the stem 71 of the mixing operation valve 70 pass. Further, the cover portion 91 is pressed downward so that the lower surface of the upper bottom and the upper surface of the cover 45 of the inner container valve 40, the lower surface of the upper bottom, and the upper surface of the stem rubber 72 of the mixing operation valve 70 are in contact. And four dents 91b are formed on the upper surface. The recess 91b is for firmly pressing the stem rubber 72 of the mixing operation valve 70, and can improve the sealing performance. Further, the inner container valve 40 can be firmly pressed and fixed to the valve holder 50, and the sealing performance of the gasket 41g and the stem rubber 72 can be enhanced. Further, the rib action of the mountain cover 90 is exerted, the strength against the internal pressure of the double container 1 is improved, and the mountain cover 90 is prevented from bulging outward and the overall sealing performance is deteriorated. In this embodiment, four isosceles triangular recesses 91 b are formed, and each vertex is formed so as to face the axis of the double container 1. That is, when the mountain cover 90 is viewed from above as shown in FIG. 1b, the ring-shaped and cross-shaped protrusions 91c are formed.
As shown in FIG. 2a, the fixing portion 92 has an upper collar portion 92a that comes into contact with the upper surface of the flange portion 61c of the valve holder 50, and when the valve assembly 30 is attached to the outer container 10, the lower end is caulked. A lower collar portion 92b is formed.

The double container 1 having the above configuration is filled with the pressurizing agent P2 between the outer container 10 and the inner container 20, and the two inner containers 20 are filled with the contents C1 and C2 different from the pressurizing agent P1. Is done. The pressurizing agent P2 filled between the outer container 10 and the inner container 20 pressurizes the inner container 20 so as not to actuate the opening means 21a during storage, and the apparent inside of the inner container 20 during use. This is for causing the upper pressure fluctuation (pressure difference between the internal pressure of the external container 10 and the internal pressure of the internal container 20) to operate the opening means 21a. That is, by filling the pressurizing agent P2, the internal pressure of the internal container 20 generated by the pressurizing agent P1 filled in the internal container 20 is Pi, and the pressurizing agent filled between the external container 10 and the internal container 20 is used. When the internal pressure of the outer container 10 generated by P2 is Po and the allowable pressure of the opening means 21a of the inner container 20 is Pa, Pi-Po is less than Pa during storage, and Pi (gauge pressure by the pressure agent P1) is used during storage. ) Is set to be equal to or higher than Pa.

The pressurizing agents P1 and P2 and the contents C1 and C2 are usually filled after the assembly of the double container 1 is completed. In order to prevent the inner container 20 from bursting, it is preferable to first fill the pressurizing agent P <b> 2 between the outer container 10 and the inner container 20. The space between the outer container 10 and the inner container 20 is filled from the stem 71 of the mixing operation valve 70. However, with the mountain cover 90 and the valve holder 50 integrated, the valve assembly 30 is slightly lifted, and the pressurizing agent P2 is filled between the outer container 10 and the inner container 20 from the gap generated by the lifting. good. In this case, the valve assembly 30 is attached by caulking the lower flange portion 92b of the mountain cover 90.
Examples of the pressurizing agent P2 include nitrogen, compressed air, carbon dioxide gas, nitrous oxide and other compressed gas, liquefied petroleum gas, liquefied gas such as hydrofluoroolefin, and the like. The pressure in the outer container is, for example, 0.2 to 0.6 MPa.

In a state where the pressurizing agent P2 is filled (pressurized) between the outer container 10 and the inner container 20, one of the two inner containers 20 is filled with the contents C1 and the pressurizing agent P1. The other side is filled with the contents C2 and the pressurizing agent P1. Filling is performed from the inner container valve 40. However, the contents C1 and C2 may be filled before the pressurizing agent P2 is filled between the outer container 10 and the inner container 20.
Examples of the contents C1 and C2 include a two-component reaction formulation that exhibits an effect by being mixed. In particular, the double container 1 of the present invention allows two components to be contained in the external container 10 without touching the two-component reaction formulation. Since they can be mixed, a two-component luminescent agent containing an organic solvent that is irritating to the skin can be used. When the two-component luminescent agent is used, it is preferable that one of the two inner containers 20 is filled with the active oxalate ester solution and the other is filled with hydrogen peroxide.
As the pressurizing agent P1, the same one as that filled between the outer container 10 and the inner container 20 is used, but is not limited to this, and various ones can be used. The pressure is determined by the balance between the pressure required to open the opening means 21a of the internal container 20 and the pressure of the pressurizing agent P2 filled between the external container 10 and the internal container 20, but at least the external In a state where the pressurizing agent P2 filled between the container 10 and the inner container 20 is no longer pressurized, the pressure exceeds the operating pressure (allowable pressure) of the opening means 21a. Specifically, for example, the pressure is set to 0.1 to 0.5 MPa. In addition, when the operating pressure of the opening means 21a is 0.05 MPa or less, there is a possibility of opening due to an impact or the like at the time of filling with the content C or the pressure agent P or at the time of transportation. In order to generate a pressure difference, a large amount of pressurizing agents P1 and P2 are required, so 0.05 to 0.4 MPa is preferable.

  The product formed by filling the double container 1 with the pressurizing agents P1 and P2 and the contents C1 and C2 is used by pushing the operation button 74 attached to the stem 71 of the mixing operation valve 70. That is, as shown in FIG. 1 c, the operation button 74 has a passage 74 a that communicates the stem hole 71 a of the stem 71 and the outside air. Therefore, when the operation button 74 is pushed in, the operation of the stem hole 71 a by the stem rubber 72 is performed. The blockage is released, and the pressurizing agent P2 filled in the external container 10 is released to the outside. Then, the pressure in the external container 10 decreases, and the internal pressure of the internal container 20 apparently increases (the pressure difference between the internal pressure of the external container 10 and the internal pressure of the internal container 20 increases). As a result, the inner container 20 that cannot withstand the internal pressure is ruptured so as to be peeled off from the bonding portion 21a as the opening means, and the contents C1 and C2 are vigorously moved into the outer container 10 by the pressure of the pressure agent P1. It flows out and mixes in the outer container 10. In the present embodiment, since the active oxalate ester solution and the hydrogen peroxide solution are used as the contents C1 and C2, the mixed contents emit fluorescence by chemiluminescence in the external container 10. Since the entire outer container 10 emits light, the surroundings can be brightened, and since it is easy to recognize from a distance, it is useful as an emergency light.

  As described above, in the double container 1 of the present embodiment, since the sealing of the inner container 20 is broken by the pressure difference and the contents C1 and C2 are mixed together, only the operation button 74 is pushed in. It can be used and is easy to use. In addition, since there is no need to strike the container, there is little risk of the container being damaged during use. Furthermore, since it is comprised with the valve | bulb used for a general aerosol product, it can manufacture with the precision equivalent to a general aerosol product.

  Further, since the opening means is formed by the pouch bonding portion 21a, the pressure required for opening can be easily adjusted.

  Moreover, since two inner containers 20 are provided and filled with different contents C1 and C2, respectively, even if one of the inner containers 20 is unintentionally opened, the contents C1 and C2 are prevented from being mixed with each other. And has high stability.

  As shown in FIG. 3, a normal stem 42A (stem in which a stem hole 42b is formed) is used as the valve body of the inner container valve 40, and a cap 100 is separately attached so that the stem 42A cannot be operated. Thus, the double container 1A may be configured. In this case, since common parts can be used, cost reduction can be achieved.

  Next, a different embodiment of the present invention will be described in detail with reference to FIG. In addition, after FIG. 4, it is also a discharge container which discharges the mixed content. In the double container 2 according to this embodiment, the inner container 20 is not attached to one of the two inner container valves 40, and the dip tube 110 is attached instead. In the internal container valve (discharge valve) 40A to which the dip tube 110 is attached, a normal stem 42A is used as a stem, and a discharge button 120 is attached to the upper end of the stem.

  The inner container 20 is filled with the contents C1, and the outer container 10 is filled with different contents C2. Examples of the contents C1 and C2 include one liquid of a two-component reactive preparation, such as a two-component hair dye, a two-component permanent agent, and a two-component adhesive. Similar to the previous embodiment, the double container 2 of the present embodiment can also mix two liquids in the external container 10 without touching the two-liquid reaction formulation, and is a combination of acid and alkali. It is suitable for filling a two-component hair dye made of When filling a two-component hair dye, it is preferable to fill the inner container 20 with an alkaline oxidation dye. This is because oxygen can be shut off by the pouch that is the inner container 20 and can be stably stored.

  Further, the inner container 20 is filled with the pressurizing agent P 1, and the pressurizing agent P 2 is filled between the outer container 10 and the inner container 20. The pressurizing agent P2 filled between the outer container 10 and the inner container 20 has a role of causing a pressure fluctuation in the outer container 10 (apparently increasing the pressure in the outer container 10). The pressurizing agent P1 filled in the container 20 has a role as a propellant for discharging the mixed contents to the outside in addition to the role of operating the opening means 21a.

  In use, first, the operation button 74 is pushed to release the pressurizing agent P2 filled in the external container 10 to the outside. Then, as in the previous embodiment, the pressure inside the internal container 20 apparently rises, the internal container 20 that cannot withstand the internal pressure bursts from the opening means 21a, and the contents C1 flow out vigorously by the pressurizing agent P1. Then, the contents C2 in the outer container 10 are mixed. Thereafter, the discharge button 120 is pushed in, and the mixed contents are discharged for use. The contents are discharged by the pressure of the pressurizing agent P1 filled in the inner container 20.

  In this method, since the two contents are mixed in advance in the external container 10 at the designed mixing ratio, the contents can be mixed more uniformly than in the case where the contents are mixed in the nozzle. Therefore, when the content is a two-component hair dye, even if the object to be ejected is hair that cannot be directly viewed by the user, hair can be dyed more easily.

  FIG. 5 shows another embodiment for discharging mixed contents. Unlike the double container 2 shown in FIG. 4, the double container 3 shown in FIG. 5 does not have a dip tube attached to the valve 40A for discharging the contents, and the discharge valve 40A is in an upright state. The lower end (the connecting cylinder 41h) is not in contact with the surface of the content C2, that is, is located above the surface of the content C2.

  With such a configuration, the pressurizing agent P2 in the external container 10 can be discharged to the outside by the discharge valve 40A, that is, the mixing operation valve and the discharge valve can be used together. It is not necessary to provide a mixing operation valve, and the cost can be reduced.

  In use, the inside of the outer container 10 is depressurized and the contents C1 and C2 are mixed by depressing the discharge button (combining button for discharging / mixing operation) 120 to rupture the inner container 20. Thereafter, if the discharge button 120 is pressed in a state where the container is turned upside down, the contents can be discharged by the pressure of the pressurizing agent P1 filled in the inner container 20.

  FIG. 6 shows yet another embodiment. Compared with the double container 3 shown in FIG. 5, the double container 4 shown in FIG. 6 is not filled with the contents in the outer container 10, and instead the inner container 20 is vertically moved by the partition wall 130. This is characterized in that it is partitioned and the contents C1 and C2 are filled in the partitioned space.

  The partition wall 130 is formed by bonding a pouch at a substantially central portion in the vertical direction. As shown in FIG. 6, since the space formed below is not filled with the pressure agent, the partition wall 130 is eliminated by the pressure of the pressure agent P1 before the opening means 21a of the inner container 20 is activated. To be peeled off. This can be achieved, for example, by making the width to be bonded shorter for the partition wall 130 than for the opening means 21a. That is, by operating the discharge button 120 so that the relative pressure of the upper space of the inner container 20 with respect to the outer space becomes equal to or higher than the operating pressure, the bonding portion 21a and the partition wall portion 130 start to peel off simultaneously. Therefore, the narrow partition wall portion 130 is opened first, and then the bonding portion 21a is opened. The inner container 20 is filled with, for example, a pressure agent P1 in the upper section and an acidic aqueous solution containing a thickener as the contents C1, and an alkaline aqueous solution as the contents C2 in the lower section. It is possible to do. In this case, when two liquids are mixed, it changes into a gel form. However, the present invention is not limited to this, and various contents can be filled.

  FIG. 7 shows yet another embodiment. The double container 5 shown in FIG. 7 is characterized in that a hard cylindrical body is used as the inner container 140 instead of a flexible pouch. The lower end of the cylindrical body 140 is closed by an opening means (lid body) 141 made of an aluminum foil, a resin, or the like that is released (broken) by a change in pressure. In the cylindrical body 140, powdered contents C1 and a pressurizing agent P1 for pressurizing the inside of the cylindrical body 140 are stored. The outer container 10 is filled with a liquid content C2 and a pressurizing agent P2.

In use, as in the previous embodiment, the discharge button 120 is pushed in, the pressurizing agent P2 filled in the outer container 10 is released to the outside, and the pressure in the outer container 10 is reduced, so that the cylinder The lid 141 is removed (breaked) using the pressure of the pressurizing agent P1 filled in the body 140, the contents C1 stored in the cylindrical body 140, the contents C2 in the outer container 10, and Mix. The content C1 stored in the cylindrical body 140 includes a foaming agent such as carbonate that reacts with the content C2 in the outer container 10 to generate gas, and generates gas by mixing. The contents can be discharged to the outside by gas pressure.

  As mentioned above, although typical embodiment of this invention was described, this invention is not limited to the said embodiment, It can be implemented in various changes within the scope of this invention. For example, in the double container of FIGS. 1 to 6, it is not always necessary to fill the external container 10 with the pressurizing agent P <b> 2, and the contents C <b> 1 and pressurization are contained in the internal container 20 in a state where the external container 10 is sealed. The pressure increase in the outer container 10 caused by filling the agent P1 and expanding the inner container 20 may be regarded as the pressure by the pressurizing agent and used. Even in this case, since the inside of the outer container 10 is at least atmospheric pressure or higher, the operation of the opening means 21a of the inner container 20 can be prevented. That is, under atmospheric pressure, Pi (internal pressure of the inner container 20)> Pa (allowable pressure of the opening means 21a) and the opening means 21a operates. This is because Po <Pa, and the operation of the opening means 21a can be prevented.

  Further, in order to ensure the outflow of the contents C1 and C2 from the inner container 20 to the outer container 10, a sharp protrusion or the like is disposed around the inner container 20 and the protrusion is formed when the inner container 20 expands. A method of opening a hole in the inner container 20 in contact with an object and allowing the contents C1 and C2 to flow out may be used in combination.

  Moreover, in the said embodiment, although two types of different contents C1 and C2 were filled in the inner container 20 or the outer container 10, you may only fill one type of content in the inner container 20. FIG. Even in this case, if the inner container 20 is light-shielding or non-transmissive, the contents can be stably stored even if the outer container 10 is light-transmissive or transmissive. There are advantages.

1, 1A, 2, 3, 4, 5 ··· Double container 10 · · Outer container 10a · · Body 10b · · Shoulder portion 10c · · Neck portion 10d · · Flange portion 10e · · Inner surface 20 of the opening · · · Inner container 21 ·· Bag 21a ·· Lamination portion 22 ·· Connection member 23 ·· Adhesion portion 23a ·· Horizontal rib 23b ·· Flange portion 24 ·· Connection portion 24a ·· Bottom portion 24b ·· Engagement portion 30 ..Valve assembly 40..Valve 40A for inner container..Valve 41..Housing 41a..Column space 41b..Communication hole 41c..Rubber holding portion 41d. Flange portion 41e. Part 41f, second step part 41g, gasket 41h, connecting cylinder 42, valve element 42a, annular step part 42A, stem 42b, stem hole 43, annular rubber 44, spring 45, Cover 45a ... Upper base 45 · The center hole 45 c ... side 45d · bottom 50 .. bulb holder 50a ... cut-away surface 60 ... base 61 ... main body (lid)
61a ··· Upper surface 61b · · Ring portion 61c · · Flange portion 62 · · Seal portion 62a · · Annular recess 62b · · Gasket 70 · · Filling portion (valve for mixing operation)
70a. Stem rubber holder 71 Stem 71a Stem hole 72 Stem rubber 73 Spring 74 Operation button 74a Path 80 Holder part 81 Upper cylinder part 82 Lower cylinder Part 83 .. annular step part 84 .. seal part 84 a .. upper part 84 b .. lower part 84 c .. first taper step part 84 d .. second taper step part 85 .. groove part 86. Mountain cover 90a ··· Notch surface 91 · · Cover portion 91a · · Insertion hole 91b · · Indentation portion 91c · · projection portion 92 · · fixing portion 92a · · upper collar portion 92b · · lower collar portion 100 · · cap 110 · · Dip tube 120 · · Discharge button 130 · · Bulkhead portion 140 · · Cylindrical body 141 · · Lids C1 and C2 · · Contents P1 and P2 · · Pressurizing agent

Claims (8)

An external container that is pressurized to have an internal pressure;
An inner container housed in an outer container and filled with the contents and the pressure agent;
A valve assembly attached to an external container,
The valve assembly is equipped with a valve that allows communication between the outside container and the atmosphere.
A double container, characterized in that the inner container is provided with an opening means that opens due to a relative increase in its internal pressure caused by the reduced pressure in the outer container.   The double container according to claim 1, wherein the inner container is a pouch, and the unsealing means is a bonded portion at the peripheral edge.   The double container according to claim 1 or 2, comprising at least two inner containers, each of which is filled with different contents.   The double container according to any one of claims 1 to 3, wherein the inner container and the outer container are filled with different contents.   The double container according to any one of claims 1 to 4, wherein the valve assembly includes a valve capable of communicating the inside of the inner container and the atmosphere.   The double container according to any one of claims 1 to 5, further comprising a discharge valve for discharging the contents in the external container.   The double container according to claim 6, wherein the valve capable of communicating the inside of the external container and the atmosphere also serves as a discharge valve.   The double container according to any one of claims 1 to 7, wherein the inner container includes a partition wall that partitions the inner container.

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