Two-liquid mixing container and method of manufacturing the two-liquid mixing container

Abstract

To provide a two-liquid mixture container that prevents a content from passing through a container body exhibiting a barrier property, and to provide a manufacturing method of the two-liquid mixture container.SOLUTION: A two-liquid mixture container 100 according to the present disclosure comprises an outer container body 10 having a first storage space S1 for storing first liquid A; an inner container body 20 having a second storage space S2 for storing second liquid B, that is arranged inward in a radial direction of the outer container body 10; an inner container body inside plug 22 for fixing the inner container body 20 in a state where an opening thereof is directed on a first storage space S1 side; a press cap 30 comprising a press part 37 for downwardly pressing the inner container body 20, that closes a mouth 11 of the outer container body 10; and a breaking tool 45 for breaking a thin-walled seal member 21 by pressing the inner container body 20 with the press part 37, that is arranged opposed to the thin-walled seal member 21 for closing the opening of the inner container body 20. The inner container body 20 and the thin-walled seal member 21 each exhibit a barrier property against the second liquid B.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a two-liquid mixing container that can store two liquids in a separated state and mix them when used, and a method for manufacturing the two-liquid mixing container. [Background technology]

[0002] Some medicines, beverages, and the like that require mixing of a first liquid and a second liquid lose their effectiveness or flavor if not mixed immediately before use, and in such cases, the first liquid and the second liquid must be stored in separate containers and mixed immediately before use.As an example of a container that can be used in this way, Patent Document 1 discloses a two-liquid mixing container in which a second container body 3 is connected to the top of a first container body 2 via a first connecting member 4 and a second connecting member 5, and the first container body 2 is rotated and lowered to connect the inside of the first container body 2 to the inside of the second container body 3, thereby mixing the two liquids. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Specification of Utility Model Application Publication No. 5-51735 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the two-liquid mixing container described in Patent Document 1, when a small amount of concentrated concentrate liquid is stored as the contents, the contents gradually pass through the container body and leak to the outside, which can make it impossible to use the required amount of contents, so there is room for improvement in this regard.

[0005] The present disclosure aims to solve these problems, and its purpose is to propose a two-liquid mixing container and a method for manufacturing a two-liquid mixing container in which the container body has barrier properties and the contents do not easily pass through the container body. [Means for solving the problem]

[0006] In order to solve the above problems, the two-liquid mixing container of the present disclosure comprises: [1] an outer container body having a first storage space for storing a first liquid; an inner container body disposed radially inside the outer container body and having a second storage space for storing a second liquid; an inner-container plug for fixing the inner container in a state in which the opening of the inner container faces the first storage space; a pressure cap that closes the mouth of the outer container body and has a pressure part that presses the inner container body downward; a breaking tool disposed opposite to a thin seal member closing the opening of the inner container, the breaking tool breaking the thin seal member when the inner container is pressed by the pressing part; Equipped with The inner container and the thin sealing member have a barrier property against the second liquid. 、 The inner container stopper includes an attachment portion that fixes the inner container stopper and a holding portion that holds the inner container, and the holding portion is connected to the attachment portion via a first weakened portion. It is characterized by:

[0007] Further, the two-liquid mixing container of the present disclosure is [2] In the above configuration [1], it is preferable that the inner container and the thin sealing member are barrier members containing aluminum.

[0009] Further, the two-liquid mixing container of the present disclosure is [ 3 ] the above[ 1 In the above configuration, it is preferable that the holding portion has a deformation suppressing rib provided at a part of the circumferential direction, which suppresses deformation of the inner container in the up-down direction against the pressing force of the pressing portion.

[0010] Further, the two-liquid mixing container of the present disclosure is [ 4 ] the above[ 3 In the above configuration, it is preferable that the inner container has a spherical arc-shaped top wall formed on the opposite side of the deformation suppressing rib in the circumferential direction.

[0011] Further, the two-liquid mixing container of the present disclosure is [ 5 ] the above [1]、 [3] and [ 4 In any of the configurations described above, it is preferable that the breaking tool is fixed to the mouth of the outer container body by a breaking tool stopper, and the attachment portion of the inner container stopper is attached to the mouth of the outer container body by fitting inside the breaking tool stopper.

[0012] Further, the two-liquid mixing container of the present disclosure is [ 6 ] From [1] above to [ 5 In any of the configurations described above, it is preferable that a ring member is connected to the lower part of the outer wall of the pressing cap via a second weakened portion, and that in the initial state of the two-liquid mixing container, the lower end of the ring member abuts against the shoulder portion of the outer container body to prevent the pressing cap from being pressed downward.

[0013] Further, the two-liquid mixing container of the present disclosure is [ 7 ] From [1] above to [ 6 In any one of the above configurations, it is preferable that the container further comprises a pouring cap for pouring the contents in the first storage space through a pouring hole.

[0014] In order to solve the above problems, the method for manufacturing a two-liquid mixing container according to the present disclosure includes the steps of: [ 8 ] From [1] above to [ 7 10]. The method for manufacturing a two-liquid mixing container according to any one of the preceding claims, characterized in that it includes a step of forming the inner container stopper by insert molding using the inner container as an insert material. [Effects of the Invention]

[0015] According to the present disclosure, it is possible to provide a two-liquid mixing container in which the container body has barrier properties and the contents do not easily pass through the container body, and a method for manufacturing the two-liquid mixing container. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a front cross-sectional view of a two-liquid mixing container according to an embodiment of the present disclosure. [Figure 2A] FIG. 2 is a front cross-sectional view showing the configuration of the breaking tool inner plug in FIG. [Figure 2B] 2 is a bottom view showing the configuration of the breaking tool inner plug in FIG. 1. FIG. [Figure 3] FIG. 2 is a front cross-sectional view showing a state in which the pressure cap is pressed down to press the inner container and break the thin seal member in FIG. 1. [Figure 4] FIG. 4 is a front cross-sectional view showing a state in which the pressure cap is further pressed down from the state of FIG. 3 to mix the contents (second liquid) in the inner container with the contents (first liquid) in the outer container. [Figure 5] 5 is a cross-sectional view showing the state in which a pouring cap is attached in place of the inner container inner plug, the breaking tool inner plug, and the pressure cap from the state shown in FIG. 4, and the two-liquid mixing container is tilted to pour the mixed contents from the pouring hole. [Figure 6] 1 is a flowchart showing the steps of a method for manufacturing a two-liquid mixing container according to an embodiment of the present disclosure. [Figure 7A] FIG. 2 is a bottom view of an inner container used in a method for manufacturing a two-liquid mixing container according to an embodiment of the present disclosure. [Figure 7B] FIG. 2 is a front view of an inner container used in a method for manufacturing a two-liquid mixing container according to an embodiment of the present disclosure. [Figure 8A] FIG. 10 is a bottom view of the inner container stopper formed by insert molding using the inner container as an insert material. [Figure 8B] 1 is a front cross-sectional view of an inner container stopper formed by insert molding using the inner container as an insert material. [Figure 9] 8C is a diagram showing a process of filling the second storage space of the inner container inserted into the inner container stopper of FIG. 8B with contents (second liquid) and sealing it with a thin-walled sealing member. [Figure 10]10 is a view showing the state in which the inner container inner plug of FIG. 9 is turned upside down and fitted inside the breaking tool inner plug. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present disclosure will be described in more detail below with reference to the drawings.

[0018] A two-liquid mixing container 100 according to one embodiment of the present disclosure, shown in FIG. 1, comprises an outer container body 10 having a first storage space S1 for storing a first liquid A, an inner container body 20 disposed radially inward of the outer container body 10 and having a second storage space S2 for storing a second liquid B, an inner container stopper 22 that secures the inner container body 20 to the mouth 11 of the outer container body 10 via a breaker stopper 40 with its opening facing the first storage space S1 (the lower side of FIG. 1), a pressure cap 30 that closes the mouth 11 of the outer container body 10 and has a pressing portion 37 that presses the inner container body 20 downward, and a breaking tool 45 that is disposed opposite the thin-walled sealing member 21 that closes the opening of the inner container body 20 and breaks the thin-walled sealing member 21 when the pressing portion 37 presses the inner container body 20.

[0019] In this specification, claims, abstract, and drawings, the side where the press cap 30 is located is referred to as the upper side (upper side in FIG. 1), and the side where the outer container body 10 is located is referred to as the lower side (lower side in FIG. 1). Therefore, for example, the inner container body 20 is assumed to have a top wall 20b at its upper end and a flange portion 20c at its lower end, based on the state where it is incorporated into the two-liquid mixing container 100 shown in FIG. 1. Furthermore, the radially outward direction refers to the direction away from the central axis O along a straight line passing through the central axis O of the two-liquid mixing container 100 in FIG. 1 and perpendicular to the central axis O, and the radially inward direction refers to the direction toward the central axis O along that straight line.

[0020] The outer container 10 is a container having a first storage space S1 for storing a first liquid A, and is equipped with a cylindrical mouth 11 to which an inner container 20 and a press cap 30 (described later) are fixed, a substantially cylindrical body 13 that is connected to the mouth 11 via a shoulder 17 and forms the first storage space S1, and a bottom 15 that closes the lower end of the body 13. The mouth 11 is provided on its outer peripheral surface above the approximate center height with a male thread 11a that threadably engages with a female thread 48b provided on the inner peripheral surface of an outer cylindrical wall 48 of a breaker inner plug 40 (described later) to fix the breaker inner plug 40 to the outer container 10.

[0021] The material of the outer container 10 may be, for example, various thermoplastic resins such as polyolefin, polyester, polyether, or polystyrene, or glass.

[0022] The inner container 20 includes a peripheral wall 20a that defines the second storage space S2, a top wall 20b that closes the upper end of the peripheral wall 20a, and a flange 20c that extends radially outward from the lower end of the peripheral wall 20a. The inner container 20 is disposed radially inward of the opening 11 of the outer container 10. One side of the inner container 20 in the left-right direction (the left half in Fig. 1, and the right half in Figs. 7A and 7B) has a generally rectangular shape in plan view, while the other side (the right half in Fig. 1, and the left half in Figs. 7A and 7B) has a spherical top wall 20b1 and a cylindrical peripheral wall 20a1.

[0023] The inner container 20 can be formed, for example, by press-molding an aluminum plate. The thin-walled sealing member 21 that closes the opening of the inner container 20 can be made of, for example, a sheet material containing aluminum. This configuration enhances the barrier properties of the inner container 20 containing the contents (second liquid B). Therefore, even when a small amount of concentrated concentrate is contained in the second storage space S2 as the contents (second liquid B), the contents can be effectively prevented from permeating the container and leaking to the outside. However, the configuration of the inner container 20 and the thin-walled sealing member 21 is not limited to this embodiment, and they may be formed using metals other than aluminum, barrier resin materials, etc. In this embodiment, the thin-walled sealing member 21 is fixed to the retaining portion 23 of the inner container stopper 22 (described later) by thermal welding.

[0024] The inner container stopper 22, which is formed integrally with the inner container 20, comprises a disk-shaped holding portion 23 that covers the flange portion 20c from above and from the radially outer side to hold the inner container 20, and an attachment portion 25 that is attached to the opening 11 of the outer container 10 via a breaker stopper 40, which will be described later. As shown in Figure 1, the holding portion 23 is connected to the attachment portion 25 via a first weakened portion 23b. In this embodiment, the inner container stopper 22 is formed by insert molding, using the inner container 20 as an insert material.

[0025] The holder 23 is provided with a deformation-suppressing rib 23a extending upward along a portion of its periphery. As shown in Fig. 1, the deformation-suppressing rib 23a is provided toward the vicinity of the top wall 20b of the inner container 20. As will be described later, the deformation-suppressing rib 23a suppresses vertical deformation of the inner container 20 when the pressing portion 37 of the press cap 30 presses the inner container 20 downward. With this configuration, when the pressing portion 37 presses the inner container 20 downward, deformation of the peripheral wall 20a on the side having a substantially rectangular shape in plan view is suppressed, and the side having the arc-shaped top wall 20b1 and the cylindrical peripheral wall 20a1 is preferentially pressed, forcing the second liquid B contained in the second containing space S2 out and supplying it to the first containing space S1.

[0026] The mounting portion 25 of the inner container stopper 22 includes a fixing flange 25a that fits into the fitting recess 47a of the breaker stopper 40 and is thereby fixed to the mouth 11 of the outer container body 10 via the breaker stopper 40, and a mounting tubular portion 25b that hangs down from the radially inner end of the fixing flange 25a. The radially outer end of the holding portion 23 and the lower end of the mounting tubular portion 25b are connected by a first weakened portion 23b. The first weakened portion 23b is formed concentrically with the central axis O, as shown in Figures 1, 8A, and 8B.

[0027] 1, 2A, and 2B, the breaker plug 40 includes an outer cylinder wall 48 attached to the mouth 11 of the outer container body 10, a top wall 47 connected to the upper end of the outer cylinder wall 48 and extending radially inward, an inner cylinder wall 41 hanging down from the top wall 47 radially inside the outer cylinder wall 48, and breaker arms 43 extending radially inward in a cross shape from all four sides of the lower end of the inner cylinder wall 41 toward the central axis O. A breaker 45 is integrally formed at the inner end of the breaker arm 43.

[0028] As shown in FIG. 2B, arm openings 43a are formed at circumferential positions between the breaking tool arms 43 to allow the contents (second liquid B) from the inner container 20 to pass through.

[0029] As shown in Figures 1, 2A and 2B, the breaking tool 45 comprises a support base 45b formed in a cross shape when viewed in a plane, and a quadrangular pyramidal blade portion 45a provided at the upper end of the support base 45b and protruding upward.

[0030] The pressing cap 30 comprises an outer peripheral wall 31 that is attached to the breaking tool inner plug 40 by threadingly engaging the female thread portion 31a with the male thread portion 48a formed on the outer surface of the outer tube wall 48 of the breaking tool inner plug 40, a top wall 33 that closes the upper end of the outer peripheral wall 31, a sealing wall 35 that hangs down from the top wall 33 radially inside the outer peripheral wall 31, a pressing portion 37 that hangs down from the radial center position of the top wall 33, and a ring member 32 that is provided at the bottom of the outer peripheral wall 31 via a second weakened portion 32a.

[0031] In the initial state (unused state) of the two-liquid mixing container 100, the ring member 32 prevents the lower end of the ring member 32 from contacting the shoulder portion 17 of the outer container body 10 and pushing the press cap 30 downward. This configuration can prevent the contents from being mixed together against the user's intention.

[0032] The ring member 32 is connected to the outer peripheral wall 31 via the second weakened portion 32a and is separated in the circumferential direction at one location in the circumferential direction so that the user can easily separate the ring member 32 from the outer peripheral wall 31 before using the two-liquid mixing container 100. As will be described later, the female thread portion 31a provided on the inside of the outer peripheral wall 31 can be used to move the pressing cap 30 downward along the central axis O by gripping the outer peripheral wall 31 and rotating it clockwise in a plan view after the ring member 32 is broken at the second weakened portion 32a and separated from the outer peripheral wall 31.

[0033] When the press cap 30 moves downward by rotation about the central axis O, the sealing wall 35 fits into the inner surface of the mounting tubular portion 25b of the inner-container stopper 22, thereby liquid-tightly sealing the space around the inner container 20 from the outside. With this configuration, the thin-walled sealing member 21 is broken by the breaking tool 45, and the content (second liquid B) forced out of the second containing space S2 can be mixed with the content (first liquid A) in the first containing space S1 without leaking outside the press cap 30.

[0034] 1, a grip portion 32b is integrally formed with the ring member 32 at a portion in the circumferential direction via a holding plate 32c that protrudes radially outward from the outer surface. When a user grips the grip portion 32b and pulls the ring member 32 radially outward and in the circumferential direction prior to using the two-liquid mixing container 100, the ring member 32 is gradually separated in the circumferential direction from the outer peripheral wall 31 while breaking the second weakened portion 32a from the circumferential cut position.

[0035] The pressing cap 30 may be made of various thermoplastic resins such as polyolefin, polyester, polyether, or polystyrene.

[0036] When using the two-liquid mixing container 100 having the above configuration, the user first grasps the body 13 of the outer container body 10 with one hand, grasps the gripping portion 32b of the press cap 30 with the other hand, and pulls the ring member 32 radially outward and circumferentially, thereby breaking the second weakened portion 32a and gradually separating it from the outer peripheral wall 31 in the circumferential direction. By separating the ring member 32 from the outer peripheral wall 31, the lower end of the outer peripheral wall 31 becomes freely movable up and down relative to the shoulder portion 17 of the outer container body 10. Next, the user grasps the body 13 of the outer container body 10 with one hand, and rotates the press cap 30 clockwise about the central axis O in a plan view with the other hand, moving the press cap 30 downward along the opening 11 of the outer container body 10.

[0037] When the pressing portion 37 of the lowered pressure cap 30 presses the inner container 20 downward as shown in Figure 3, it slightly recesses the top wall 20b and peripheral wall 20a and abuts against the upper end of the deformation-suppressing rib 23a. Because the deformation-suppressing rib 23a is formed as a rib and has a greater elastic modulus in the vertical direction than the top wall 20b and peripheral wall 20a, the deformation-suppressing rib 23a presses the holding portion 23 downward without significantly deforming. When the holding portion 23 is pressed downward, the first weakened portion 23b on the side where the deformation-suppressing rib 23a is formed (the left side in Figure 3) is cut, causing the deformation-suppressing rib 23a side to tilt significantly downward, and the thin-walled seal member 21 abuts against the blade portion 45a of the breaking tool 45 arranged opposite (see Figure 3).

[0038] When the user rotates the press cap 30 around the central axis O from the state shown in Figure 3 and presses it further downward, the thin-walled sealing member 21 is broken by the pushing of the blade portion 45a of the sharp breaking tool 45, as shown in Figure 4, while the inner container 20 rotates around the uncut first weakened portion 23b on the opposite side of the deformation-suppressing rib 23a (the right side in Figure 4), and the deformation-suppressing rib 23a is displaced so as to move outward beyond the outer edge of the pressing portion 37 (see Figure 4). Due to this displacement of the deformation-suppressing rib 23a, the deformation-suppressing rib 23a no longer suppresses the vertical deformation of the inner container 20. Therefore, by pressing the pressing portion 37 of the pressing cap 30 further downward, the pressing portion 37 significantly crushes the cylindrical peripheral wall 20a1 and the spherical arc-shaped top wall 20b1 (see FIGS. 7A and 7B) on the opposite side of the deformation-suppressing rib 23a (the right side of FIG. 4), thereby reducing the volume of the second containing space S2. As a result, the content (second liquid B) in the second containing space S2 is forced out of the inner container 20 through the ruptured thin-walled seal member 21, and is supplied into the first containing space S1 through the arm opening 43a of the breaker inner plug 40, as shown in FIG.

[0039] In this embodiment, the inner container 20 in Fig. 1 is configured with a spherical top wall 20b1 and a cylindrical peripheral wall 20a1 on the side opposite the deformation-reducing rib 23a (the right side in Fig. 1) (see Figs. 7A and 7B). With this configuration, when the inner container 20 rotates around the uncut first weakened portion 23b on the side opposite the deformation-reducing rib 23a (the right side in Figs. 3 and 4), as shown in Figs. 3 and 4, the pressing portion 37 abuts against the spherical top wall 20b1. This causes the pressing force from the pressing portion 37 to press the spherical top wall 20b1 downward regardless of the inclination of the inner container 20, thereby crushing the inner container 20 relatively evenly. This allows the contents in the second storage space S2 to be efficiently supplied to the first storage space S1 without waste.

[0040] When the contents in the second storage space S2 have been supplied to the first storage space S1, the user rotates the pressing cap 30 in Fig. 1 counterclockwise in plan view to remove it from the breaker inner plug 40, and then rotates the breaker inner plug 40 counterclockwise in plan view to remove it from the opening 11 of the outer container body 10. Then, as shown in Fig. 5, the user attaches the pouring cap 50 to the opening 11 of the outer container body 10 to pour out the mixed contents in the first storage space S1 to the outside.

[0041] 5, the dispensing cap 50 includes a peripheral wall 51, a top wall 53 continuous with the upper end of the peripheral wall 51, and a dispensing tube 54 formed in the radial center of the top wall 53. The dispensing cap 50 is attached to the mouth 11 of the outer container body 10 by threadingly engaging a female thread 51a formed on the inner surface of the peripheral wall 51 with a male thread 11a provided on the outer surface of the mouth 11. A dispensing hole 54a is formed on the inside of the dispensing tube 54, through which the contents in the first storage space S1 are dispensed.

[0042] The dispensing cap 50 is integrally formed with a lid body 60 connected via a hinge portion 51b at the upper end of the peripheral wall 51. The lid body 60 includes a lid body peripheral wall 61 and a lid body top wall 63 continuous with the upper end of the lid body peripheral wall 61. An inner seal tube 63a that fits onto the inner surface of the dispensing tube 54 and an outer seal tube 63b that fits onto the outer surface of the dispensing tube 54 are provided on the lower surface of the lid body top wall 63.

[0043] The user rotates the lid body 60 around the hinge portion 51b to open it, and then tilts the outer container body 10 so that the mouth portion 11 is lower than the bottom portion 15 as shown in Figure 5, and pours the mixed contents in the first storage space S1 out to the outside through the pouring hole 54a.

[0044] Next, a method for manufacturing the two-liquid mixing container 100 according to this embodiment will be described with reference to FIGS.

[0045] In manufacturing the two-component mixing container 100 according to this embodiment, first, the inner container 20 is formed by press-molding an aluminum plate (step S101 in FIG. 6). As shown in FIGS. 7A and 7B, the inner container 20 formed by press-molding has a substantially rectangular shape on the right side in plan view, while the left side of the figures has a spherical arc-shaped top wall 20b1 and a cylindrical peripheral wall 20a1. Note that the substantially rectangular peripheral wall 20a on the right side of FIG. 7A also has rounded corners.

[0046] Next, the inner container 20 prepared in step S101 is used as an insert material to form the inner container stopper 22 by insert molding (step S102 in FIG. 6). In this embodiment, as shown in FIGS. 8A and 8B, the outer diameter of the retaining portion 23 is formed to be slightly larger than the flange portion 20c of the inner container 20, and a thin-walled seal member 21 (described later) can be heat-sealed to the area of ​​the retaining portion 23 that protrudes outward from the flange portion 20c. As shown in FIG. 8B, the flange portion 20c is embedded in the underside of the retaining portion 23 (the upper surface in FIG. 8B). In this embodiment, a deformation suppression rib 23a that suppresses vertical deformation of the inner container 20 is erected on the retaining portion 23 on the side of the substantially rectangular peripheral wall 20a (the right side in FIGS. 8A and 8B). In this way, by forming the inner container stopper 22 by insert molding, it becomes easier to handle the inner container 20 and fill it with contents, and a receiving surface can be provided when the thin-walled sealing member 21 is heat-sealed.

[0047] Next, in step S102, the second storage space S2 in the inner container 20 integrated with the inner container stopper 22 is filled with the second liquid B (step S103 in FIG. 6). In this embodiment, the concentrated concentrate side of a two-component medicine, which is used by mixing two liquids consisting of a concentrate and a diluent, is filled as the second liquid B.

[0048] Next, the opening of the inner container 20 is covered with the thin sealing member 21, and the outer edge of the thin sealing member 21 is fixed to the holding part 23 by heat welding (step S104 in FIG. 6). In this embodiment, the heat welding is performed using the area of ​​the holding part 23 outside the flange part 20c (see FIG. 9).

[0049] Next, the inner container inner plug 22 is turned upside down and attached to the breaking tool inner plug 40 (step S105 in Fig. 6). The inner container inner plug 22 is attached to the breaking tool inner plug 40 by fitting the fixing flange 25a of the inner container inner plug 22 into the fitting recess 47a on the inside of the upper part of the breaking tool inner plug 40, as shown in Fig. 10. Note that the attachment of the inner container inner plug 22 to the breaking tool inner plug 40 is not limited to the above-mentioned manner, and may be achieved by other means such as thread engagement or undercut engagement.

[0050] Next, the first storage space S1 of the outer container body 10 is filled with the first liquid A (step S106 in FIG. 6). In this embodiment, the first liquid A is filled as the diluent side of a two-component medicine that is used by mixing two liquids consisting of an undiluted liquid and a diluent.

[0051] Next, the breaker inner plug 40 is attached to the mouth 11 of the outer container body 10 (step S107 in FIG. 6). The attachment of the breaker inner plug 40 to the mouth 11 of the outer container body 10 is performed by threading the female thread portion 48b provided on the inner surface of the outer cylinder wall 48 into the male thread portion 11a provided on the mouth 11 of the outer container body 10, as shown in FIG.

[0052] Next, the pressing cap 30 is attached to the breaking tool inner plug 40 (step S108 in FIG. 6). The pressing cap 30 is attached to the breaking tool inner plug 40 by threading the female thread portion 31a provided on the inner surface of the outer peripheral wall 31 into the male thread portion 48a provided on the outer cylinder wall 48 of the breaking tool inner plug 40, as shown in FIG. 1, and abutting the lower end of the ring member 32 against the shoulder portion 17 of the outer container body 10.

[0053] By the above steps, the production of the two-liquid mixing container 100 based on the production method shown in FIG. 6 is completed.

[0054] As described above, the two-liquid mixing container 100 according to this embodiment comprises an outer container body 10 having a first storage space S1 for storing a first liquid A, an inner container body 20 arranged radially inward of the outer container body 10 and having a second storage space S2 for storing a second liquid B, an inner container stopper 22 for fixing the inner container body 20 with its opening facing the first storage space S1, a pressure cap 30 for closing the mouth 11 of the outer container body 10 and having a pressing part 37 for pressing the inner container body 20 downward, and a breaking tool 45 arranged opposite the thin-walled sealing member 21 closing the opening of the inner container body 20 and for breaking the thin-walled sealing member 21 when the pressing part 37 presses the inner container body 20, and the inner container body 20 and the thin-walled sealing member 21 are configured to have barrier properties against the second liquid B. By adopting this configuration, the second storage space S2 is formed from a material with barrier properties, so even if a small amount of concentrated concentrate is stored in the second storage space S2, it is difficult for the small amount of content to pass through the container body and escape to the outside. Furthermore, because the opening of the inner container 20 and the thin-walled seal member 21 are arranged opposite the breaking tool 45, the content in the second storage space S2 cannot be used unless the thin-walled seal member 21 is broken by pressing the pressure cap 30. This prevents the concentrate (second liquid B) in the inner container 20 from being used alone without mixing the two liquids, contrary to the manufacturer's intention.

[0055] In this embodiment, the inner container 20 and the thin seal member 21 are configured to be barrier materials containing aluminum. By adopting this configuration, the second storage space S2 is formed from a material containing aluminum that has high barrier properties, so even if a small amount of concentrated concentrate is stored in the second storage space S2, it is difficult for the small amount of content to pass through the container body and escape to the outside.

[0056] In this embodiment, the inner container stopper 22 includes an attachment section 25 that secures the inner container stopper 22 and a holding section 23 that holds the inner container 20, and the holding section 23 is configured to be connected to the attachment section 25 via the first weakened section 23b. With this configuration, a predetermined pressing force from the press cap 30 cuts at least a portion of the first weakened section 23b, causing the breaker 45 to break the thin-walled seal member 21. Therefore, the timing at which the first liquid A and the second liquid B are mixed can be easily controlled by the pressing force applied by the user to the press cap 30.

[0057] Furthermore, in this embodiment, the retaining portion 23 is configured to have a deformation-suppressing rib 23a provided along a portion of the circumferential direction, which suppresses vertical deformation of the inner container 20 against the pressure from the pressing portion 37. This configuration makes it possible to more reliably cut at least a portion of the first weakened portion 23b and rupture the thin-walled seal member 21 before the inner container 20 is crushed by the pressure from the pressing portion 37. Therefore, after opening the opening of the inner container 20, the inner container 20 can be crushed to mix the second liquid B in the second housing space S2 with the first liquid A in the first housing space S1. This prevents the inner container 20 from bursting before the thin-walled seal member 21 is ruptured, thereby preventing unintended splashing of the second liquid B.

[0058] In this embodiment, the inner container 20 is configured so that a spherical top wall 20b1 is formed on the circumferentially opposite side of the deformation-reducing rib 23a. This configuration allows the pressing portion 37 of the pressure cap 30 to abut against the spherical top wall 20b1, and the pressing force from the pressing portion 37 presses the spherical top wall 20b1 downward regardless of the inclination of the inner container 20, crushing the inner container 20 relatively evenly. This allows the contents in the second storage space S2 to be efficiently supplied to the first storage space S1 without waste.

[0059] In this embodiment, the breaker 45 is fixed to the opening 11 of the outer container 10 by the breaker plug 40, and the attachment portion 25 of the inner container plug 22 is fitted inside the breaker plug 40 so as to be attached to the opening 11 of the outer container 10. By adopting such a configuration, the inner container plug 22 and the breaker plug 40 can be assembled into a module before being attached to the outer container 10, thereby simplifying the manufacturing process.

[0060] Furthermore, in this embodiment, the ring member 32 is connected to the lower part of the outer peripheral wall 31 of the press cap 30 via the second weakened part 32a, and in the initial state of the two-liquid mixing container 100, the lower end of the ring member 32 abuts against the shoulder part 17 of the outer container body 10 to prevent the press cap 30 from being pressed downward. By adopting such a configuration, in the initial state (unused state) of the two-liquid mixing container 100, it is possible to prevent the first liquid A and the second liquid B from being mixed due to unintentional pressing of the press cap 30.

[0061] In addition, this embodiment is configured to further include a dispensing cap 50 that dispenses the contents in the first storage space S1 through the dispensing hole 54a. By adopting such a configuration, after mixing the two liquids, the user can dispense and use the mixed medicine by simply opening and closing the lid 60.

[0062] Furthermore, the manufacturing method for the two-component mixing container 100 according to this embodiment is configured to include a step of forming the inner-container stopper 22 by insert molding using the inner container 20 as an insert material. This configuration not only makes it easier to handle the inner container 20 and fill it with the contents, but also provides a receiving surface for heat-welding the thin-walled sealing member 21.

[0063] Although the present disclosure has been described based on various drawings and examples, it should be noted that those skilled in the art can easily make various modifications and alterations based on the present disclosure. Therefore, it should be noted that these modifications and alterations are included in the scope of the present invention. For example, the functions included in each component can be rearranged so as not to cause logical inconsistencies, and multiple components can be combined into one or divided. It should be understood that these modifications and alterations are also included in the scope of the present invention.

[0064] For example, in this embodiment, the inner container 20 and the thin-walled sealing member 21 are configured to contain aluminum, but this is not limited to this embodiment, and they may be configured to contain, for example, other metal materials, metal vapor deposition films, or barrier resins such as ethylene vinyl alcohol copolymer resin (EVOH).

[0065] In addition, in this embodiment, the holding portion 23 of the inner container stopper 22 is configured to be connected to the attachment portion 25 via the first weakened portion 23b, but this is not limited to this. The holding portion 23 of the inner container stopper 22 may also be fixed to the outer container body 10 or the like without using a weakened portion.

[0066] In addition, in this embodiment, the inner container stopper 22 is configured to have the deformation suppression rib 23a, but this is not limited to this. The inner container stopper 22 may not have the deformation suppression rib 23a, and instead the inner container 20 may have appropriate rigidity.

[0067] In addition, in this embodiment, the inner container 20 is configured to have a spherical arc-shaped top wall 20b1 on the side opposite to the deformation suppression rib 23a, but is not limited to this. The inner container 20 may not have the spherical arc-shaped top wall 20b1, and may instead be configured, for example, only with a flat plate-shaped top wall.

[0068] In addition, in this embodiment, the attachment portion 25 of the inner container stopper 22 is configured to be attached to the mouth portion 11 of the outer container body 10 by fitting it inside the breaker stopper 40, but this is not limited to this form, and for example, the attachment portion 25 of the inner container stopper 22 may be attached directly to the mouth portion 11 of the outer container body 10.

[0069] In addition, in this embodiment, the pressing cap 30 is configured to be attached directly to the breaker inner plug 40, but this is not limited to this form, and for example, the pressing cap 30 may be attached directly to the outer container body 10.

[0070] In addition, in this embodiment, a ring member 32 is provided at the lower part of the outer wall 31 of the pressing cap 30 via a second weakened portion 32a, but this is not limited to this form, and the pressing cap 30 may not be provided with a ring member 32, and the pressing of the pressing cap 30 may be limited by a separate member.

[0071] In addition, in this embodiment, the inner container stopper 22 is configured to be formed by insert molding using the inner container 20 as an insert material, but this is not limited to this form, and the inner container stopper 22 may be formed separately from the inner container 20. [Explanation of symbols]

[0072] 10 Outer container body 11 Mouth 11a Male thread 13 Torso 15 Bottom 17 Shoulder 20 Inner container body 20a Peripheral wall 20a1 Cylindrical wall 20b Ceiling wall 20b1 Spherical ceiling wall 20c flange 21 Thin-walled sealing material 22 Inner container body stopper 23 Holding part 23a Deformation suppression rib 23b 1st weakened part 25 Mounting part 25a Fixed flange 25b Mounting tube 30 Pressing cap 31 Outer wall 31a Female thread 32 Ring member 32a 2nd weakened part 32b Grip part 32c retaining plate 33 Ceiling wall 35 Seal Wall 37 Pressing section 40 Breaker plug 41 Inner cylinder wall 43 Breaking tool arm 43a Arm opening 45 Breaking Tool 45a Blade 45b Support stand 47 Ceiling wall 47a Fitting recess 48 Outer barrel wall 48a Male thread 48b female thread 47a Fitting recess 50 dispensing caps 51 Peripheral wall 51a Female thread 51b Hinge part 53 Top Wall 54 Pour tube 54a Pour hole 60 Lid 61 Lid body peripheral wall 63 Top wall of lid 63a Inner seal tube 63b Outer seal tube 100 Two-liquid mixing container A 1st liquid B 2nd liquid O center axis S1 First Storage Space S2 Second storage space

Claims

1. an outer container body having a first storage space for storing a first liquid; an inner container body disposed radially inside the outer container body and having a second storage space for storing a second liquid; an inner-container plug for fixing the inner container in a state in which the opening of the inner container faces the first storage space; a pressure cap that closes the mouth of the outer container body and has a pressure part that presses the inner container body downward; a breaking tool disposed opposite to a thin seal member closing the opening of the inner container, the breaking tool breaking the thin seal member when the inner container is pressed by the pressing part; Equipped with the inner container and the thin-walled sealing member have a barrier property against the second liquid, a two-liquid mixing container, the inner container stopper comprising an attachment portion for fixing the inner container stopper and a holding portion for holding the inner container, the holding portion being connected to the attachment portion via a first weakened portion.

2. 2. The two-component mixing container according to claim 1, wherein the inner container and the thin-walled sealing member are barrier members containing aluminum.

3. 2. The two-liquid mixing container according to claim 1, wherein the holding portion has a deformation suppressing rib provided at a part of the circumferential direction, the deformation suppressing rib suppressing deformation of the inner container in the up-down direction against the pressing force of the pressing portion.

4. 4. The two-component mixing container according to claim 3, wherein the inner container has a spherical arc-shaped top wall formed on a side opposite to the deformation suppressing rib in the circumferential direction.

5. 2. The two-liquid mixing container according to claim 1, wherein the breaking tool is fixed to the mouth of the outer container body by a breaking tool stopper, and the attachment portion of the inner container stopper is attached to the mouth of the outer container body by fitting inside the breaking tool stopper.

6. 3. A two-liquid mixing container according to claim 1 or 2, wherein a ring member is connected to the lower part of the outer wall of the press cap via a second weakened portion, and in the initial state of the two-liquid mixing container, the lower end of the ring member abuts against a shoulder portion of the outer container body to prevent the press cap from being pressed downward.

7. The two-liquid mixing container according to claim 1 or 2, further comprising a pouring cap for pouring the contents in the first storage space through a pouring hole.

8. 3. A method for manufacturing a two-component mixing container according to claim 1, further comprising the step of forming the inner container stopper by insert molding using the inner container as an insert material.

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