Container for liquids

Abstract

This design improves usability by giving the bag-shaped container self-supporting while making it easier to dispense liquids. [Solution] The liquid container 10 is a container for a liquid M and comprises a bag-shaped container 20 having a filling section 21 into which the liquid M is filled as content, and a discharge section 22 for discharging the liquid M filled in the filling section 21, and a holder 30 for housing the filling section 21 of the bag-shaped container 20. The holder 30 has a lid 40 that has an engagement section 41 into which the bag-shaped container 20 can be attached and detached and which engages airtightly with the discharge section 22 when the bag-shaped container 20 is attached, a body 50 that has a fitting section into which the lid 40 can be attached and detached and which engages airtightly with the lid 40 when the lid 40 is attached to the fitting section, and a pressurizing means 60 that increases the internal pressure of the holder 30 when the lid 40 with the bag-shaped container 20 attached is attached to the body 50.

Description

Technical Field

[0001] The present invention relates to a liquid container for containing a liquid such as liquid food.

Background Art

[0002] Bag-shaped containers such as pouched containers are used as containers for suppressing oxidation of liquid foods such as soy sauce that are prone to oxidative degradation when exposed to air (see, for example, Patent Document 1). As such a bag-shaped container, there is also used one provided with a check valve at the discharge outlet of the liquid (the liquid filled in the container is hereinafter also referred to as "liquid content") in the upper part of the bag (for example, a cap) to prevent air from entering the inside of the container. Furthermore, holders that hold the bag-shaped container to improve self-standing performance have also been proposed (see, for example, Patent Document 2).

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when using a bag-shaped container provided with a check valve as described above, simply tilting the bag-shaped container will block the replacement of the liquid content with air by the check valve, and the liquid content cannot be discharged by its own weight. Therefore, a user has to manually press the bag-shaped container from the outside and apply pressure to discharge the liquid content. When the user directly presses and applies pressure to the bag-shaped container from the outside in this manner, the user has to use both hands, and it is difficult to adjust the force even when trying to adjust to discharge an appropriate amount, which causes troublesomeness and inconvenience, resulting in poor usability.

[0005] Another problem was that as the amount of liquid contents decreased during use, the pouch-like container would shrink, making it difficult to maintain its self-supporting position and thus reducing its usability. One way to solve this problem is to use a holder to support the pouch-like container in order to improve its self-supporting position, but the holder can get in the way when compressing the pouch-like container by hand, making it difficult to improve usability with the holder in such cases.

[0006] Therefore, the present invention aims to provide a container and holder for liquids that improves usability by giving the bag-shaped container self-supporting properties while facilitating the dispensing of liquid contents. [Means for solving the problem]

[0007] One aspect of the present invention is a container for which a liquid is contained, A bag-shaped container having a filling section into which the liquid is filled as content, and a dispensing section for dispensing the liquid filled in the filling section, A holder for housing the filling section of a bag-shaped container, Equipped with, The holder is A lid is provided which has an engagement portion that allows the bag-shaped container to be attached and detached, and which engages airtightly with the dispensing portion when the bag-shaped container is attached, The lid is provided with a removable fitting portion, and the body engages airtightly with the lid when the lid is attached to the fitting portion, A pressurizing means that increases the internal pressure of the holder while the lid, to which a bag-shaped container is attached, is attached to the body, It is a container for liquids that has [a certain feature].

[0008] With the above-described container for liquids, the liquid contents can be dispensed by increasing the internal pressure of the holder using a pressurizing mechanism, rather than the user directly applying pressure to the bag-shaped container from the outside with their hands. This series of operations is less cumbersome and inconvenient than directly applying pressure to the bag-shaped container housed in a holder with an opening from the outside, making it easier to dispense the contents. This improves usability while still utilizing the holder, resulting in superior ease of use.

[0009] Furthermore, with the above-described container for liquids, the filling portion of the bag-shaped container can be used while it remains housed in the holder. This eliminates the problem of the bag-shaped container shrinking as the amount of liquid decreases during use, making it difficult to maintain its self-supporting position and thus reducing its usability.

[0010] In addition, the holders used with the liquid containers described above can be reused regardless of the remaining amount of liquid. When the liquid is used up, only the pouch-shaped container is discarded, and a new pouch-shaped container is attached to the holder for repeated use. At this time, the pouch-shaped container can be rolled up or folded to make it smaller for disposal, which is preferable from the standpoint of minimizing the space required for disposal. Furthermore, repeatedly using the holder leads to a reduction in the total amount of resin used for the liquid containers.

[0011] In the above-described container for liquids, a check valve may be provided at the discharge portion of the bag-shaped container.

[0012] In the above-described container for liquids, the body may have a flexible portion in at least a part of the portion excluding the fitting portion, which is less rigid and more flexible than the fitting portion.

[0013] In a liquid container as described above, at least a portion of the side of the body may be a flexible portion.

[0014] In a liquid container as described above, the pressurizing means may be composed of a flexible portion.

[0015] In the liquid container as described above, the pressurizing means may be constituted by an air pump that feeds air into the holder.

[0016] In the liquid container as described above, the air pump may be provided on a side portion of the body or on the lid.

[0017] In the liquid container as described above, the engagement portion of the lid may be constituted by an engagement hole formed to have a size that allows the discharge portion to engage therewith.

[0018] In the liquid container as described above, the engagement portion of the lid may be formed on a separable mating surface of the lid.

[0019] In the liquid container as described above, an elastic sealing material may be provided in the engagement portion.

[0020] The liquid container as described above may further comprise a posture-responsive air valve that exhibits airtightness only when the holder is tilted beyond a predetermined angle.

[0021] In the liquid container as described above, the posture-responsive air valve may comprise a rolling element that moves under its own weight, and a valve port that is closed by the rolling element when the holder is tilted beyond a predetermined angle.

[0022] In the liquid container as described above, the posture-responsive air valve may be provided on the lid of the holder.

[0023] The liquid container as described above may further comprise an internal pressure-responsive air valve that closes when the internal pressure of the holder is increased to a predetermined value by the pressurizing means, and opens when pressurization stops and the internal pressure decreases.

[0024] The liquid container as described above may further comprise a posture-responsive air valve that exhibits airtightness only when the holder is tilted beyond a predetermined angle.

[0025] In the above-described container for liquids, the liquid may be a soy sauce-containing seasoning.

[0026] Another aspect of the present invention is a holder for housing the filling portion of a bag-shaped container in which a liquid substance, such as a liquid food, is filled as the contents of the filling portion, A lid is provided which has an engagement portion that allows the bag-shaped container to be attached and detached, and which engages airtightly with the liquid discharge portion of the bag-shaped container when the bag-shaped container is attached, The lid is provided with a removable fitting portion, and the body engages airtightly with the lid when the lid is attached to the fitting portion, A pressurizing means that increases the internal pressure of the holder while the lid, to which a bag-shaped container is attached, is attached to the body, It is a holder that possesses this feature. [Effects of the Invention]

[0027] According to the present invention, it is possible to improve usability by giving a bag-shaped container self-supporting properties while making it easier to dispense liquid contents. [Brief explanation of the drawing]

[0028] [Figure 1] This figure shows a container for liquid food according to one embodiment of the present invention. [Figure 2] (A) A bag-shaped container with the inner pouch (filling section) and inner cap separated, and (B) a liquid food container loaded into a holder containing the bag-shaped container. [Figure 3A] This is a plan view showing the lid with the mating surfaces open. [Figure 3B] This is a plan view showing the lid in the closed position of the mating surfaces. [Figure 4] This figure shows an example of the structure around the lid of the holder. [Figure 5] This diagram shows examples of structures such as the fitting parts of the lid and the body. [Figure 6] This diagram shows the internal structure of the inner bag cap of the inner bag pouch (filling section). [Figure 7A] This figure shows the process of pressurizing a liquid food container with an air pump while it is tilted, causing the liquid food inside the bag-shaped container to be discharged from the outlet. [Figure 7B] This diagram illustrates the airflow when the pressurization by the air pump is released, as well as the movement of the attitude-reactive air valve and the internal pressure-reactive air valve. [Figure 8] This figure shows a container for liquid food in another embodiment of the present invention. [Figure 9A] This figure shows the process of pressurizing a liquid food container, as shown in Figure 8, while it is tilted, and discharging the liquid food from the bag-shaped container through the discharge port. [Figure 9B] This diagram illustrates the airflow when the pressurization is released, as well as the movement of the posture-reactive air valve and the internal pressure-reactive air valve. [Modes for carrying out the invention]

[0029] The following describes a liquid food container according to one embodiment of the present invention, with reference to the drawings. The liquid food container 10 of this embodiment, which can be used as a container for various liquid foods including soy sauce-containing seasonings, consists of a bag-shaped container 20 and a holder 30 (see Figure 1, etc.).

[0030] [Bag-shaped container] The bag-shaped container 20 is a bag-shaped container into which liquid food (indicated by the symbol M in Figure 6, etc.) is filled as the contents. The bag-shaped container 20 of this embodiment has a filling section 21 which is the container body made of a flexible film material, a dispensing section 22, an outer casing 23, an inner bag cap 24, and a check valve 25 (see Figure 2, etc.).

[0031] The filling section 21, which is the container body, is constructed in a pouch-like manner using a film material so that it expands when filled with liquid food M, and can be folded or crushed to make it smaller after the liquid food M has been used up (hereinafter also referred to as the "inner pouch"). Preferably, the inner pouch 21 is constructed so that it expands when filled with liquid food M and becomes self-supporting. From this viewpoint, the bag-shaped container 20 may be a so-called standing pouch type BLP (bottle-like pouch) container that expands to become self-supporting when filled with liquid food M, such as having a gusset at the bottom. The film material forming the inner pouch 21 may be a single layer or may be composed of multiple layers. When the film is composed of multiple layers, for example, it may consist of a base material layer that forms the outer layer when processed into a bag shape, a sealant layer that forms the inner layer, and an adhesive layer that bonds the base material layer and the sealant layer together. From the perspective of protecting the liquid food contents M from oxidative deterioration due to exposure to air, a barrier can be provided to the film portion forming the inner pouch 21 by laminating aluminum foil or other methods to suppress gas permeation from the bag. Furthermore, from an environmental protection standpoint, the surface design of the bag-shaped container 20 is preferably applied using biomass ink or similar materials.

[0032] The dispensing section 22 is the part that dispenses the liquid food M filled in the inner pouch 21, and for example, it includes the outer casing 23 attached to the inner pouch 21 (see Figure 2, etc.). The outer casing 23 is a member provided at the mouth portion 20a of the bag-shaped container 20 (for example, the top portion), and is composed of, for example, a cap attachment portion 23a and a joint portion 23b provided below it (see Figure 2). In the bag-shaped container 20 of this embodiment, the outer casing 23 is attached to the inner pouch 21 with the cap attachment portion 23a protruding outside the inner pouch 21 by bonding the outer circumferential surface of the joint portion 23b of the outer casing 23 to the peripheral edge of the mouth portion 20a of the bag-shaped container 20 (see Figure 2, etc.). For example, a stopper-type inner bag cap 24 is attached to the cap attachment portion 23a. Alternatively, if a helical thread (screw-in part) is provided around the cap mounting portion 23a, a screw-type inner bag cap 24 can be attached to and detached from the outer casing 23 by a screw structure. As such an outer casing 23, one manufactured by injection molding or the like can be used. Examples of materials for the outer casing 23 include synthetic resins such as polyethylene and polypropylene. To weld the inner bag pouch 21 and the joint portion 23b, methods such as heat sealing, high-frequency sealing, hot air sealing, microwave heating, and ultrasonic sealing can be employed.

[0033] The inner bag cap 24 is a component attached to the mouth portion 20a of the bag-shaped container 20 via the outer casing 23. In this embodiment, as described above, a push-in type inner bag cap 24 is used, which is attached by pushing it into the cap attachment portion 23a of the outer casing 23 attached to the inner bag pouch 21. However, a screw-type inner bag cap 24 may also be attached by screwing in a threaded portion (threaded portion) on the cap side (not shown). Alternatively, the inner bag cap 24 may be attached directly to the inner bag pouch 21 without going through such an outer casing 23. The top portion 24t of the inner bag cap 24 is provided with a discharge port 24d for dispensing liquid food M (see Figure 6). The discharge port 24d is shaped and sized so that the filled liquid food M is dispensed from the discharge port 24d when the bag-shaped container 20 is tilted and pressurized. Furthermore, the discharge port 24d is formed to protrude from the top surface 24t of the inner bag cap 24. In the liquid food container 10 of this embodiment, the discharge port 24d is formed at a position approximately in the center of the inner bag cap 24 (see Figure 6), but it may be formed at a position offset from the center. The discharge port 24d may also be composed of a cylindrical part with a constant diameter, or a tapered cylindrical part that widens in diameter like a trumpet. The discharge port 24d may be formed with a pouring section that makes it easy to pour the liquid food M in a predetermined direction, for example, a pouring section that has a substantially elliptical or oblong shape with the opening of the discharge port 24d cut diagonally to make it easy to pour the liquid food M in a predetermined direction.

[0034] The inner bag cap 24 may be equipped with an overcap (top lid) that can open and close the discharge port 24d. The inner bag cap 24 in this embodiment is equipped with a hinge-type overcap 26 that opens and closes the discharge port 24d (see Figure 6). The hinge-type overcap 26 is always connected to the inner bag cap 24 and can be opened and closed with one hand, so that a series of actions can be performed with one hand: open the overcap 26, hold the liquid food container 10, tilt it to dispense the liquid food M, and then close the overcap 26. Although not specifically shown in the figures, a screw-type overcap (an overcap that screws onto the inner bag cap 24 with a screw structure) may be used instead of the hinge-type overcap 26.

[0035] The check valve 25 is located at the discharge port 22 of the bag-shaped container 20 and is supported by a valve retainer 25h (see Figure 6). The check valve 25 is elastically deformable and is a valve for switching between communication and blocking between the inside of the inner pouch 21 and the discharge port 24d of the inner bag cap 24. When liquid food M is discharged, it bends to connect the internal space of the inner pouch 21 to the outside, and at other times returns to its original shape to prevent communication (see Figure 6).

[0036] [holder] The holder 30 is configured as a component for containing the inner pouch 21 of the bag-shaped container 20 described above in a sealed state. In this embodiment, the holder 30 has a lid 40, a body 50, a pressurizing means 60, a posture-reactive air valve 70, and an internal pressure-reactive air valve 80 (see Figures 1 and 2).

[0037] [Holder lid] The lid 40 is a component that serves as the lid of the holder 30. The lid 40 is provided with an engaging portion 41 that can be attached to and detached from the bag-shaped container 20. This engaging portion 41 is tightly fitted to the discharge portion 22 of the bag-shaped container 20 (in this embodiment, the portion of the outer casing 23) to create an airtight engagement (see Figures 2 and 3). The specific structure of such a lid 40 is not particularly limited, but as an example, in this embodiment, a substantially circular lid 40 is divided into two parts, and these separated parts are connected so as to be openable and closable, centered on a hinge portion 44 at the periphery (see Figures 3A and 3B). In this embodiment, the mating surfaces 42 of the separated parts are straight, and a semicircularly cut-out engaging portion 41 is provided in the middle of these mating surfaces 42. The engaging portion 41 is composed of an engaging hole formed to a size that engages with the discharge portion 22 of the bag-shaped container 20 (see Figure 3B, etc.). An elastic sealing material 43, such as a packing, is provided on the engaging portion 41 and the mating surface 42, so that when each of the separated lids 40 is closed, the dispensing portion 22 of the bag-shaped container 20 can be sealed in an airtight state. In addition, a lid fastener 45 is provided on the side of the lid 40 opposite the hinge portion 44 to maintain the lid 40 in a closed state. The lid fastener 45 can be made of, for example, a toggle latch (see Figures 3A and 3B). A fitting portion 46 is provided on the inner circumference of the lid 40 to fit airtightly with the body 50 (see Figure 5).

[0038] [Body of the holder] The body 50 is a bottle-shaped component capable of housing the inner pouch 21 of the bag-shaped container 20 (see Figure 2, etc.). The upper part of the body 50 is provided with an opening 51 large enough to allow the inner pouch 21 of the bag-shaped container 20 to be inserted and removed (see Figure 2(B)). The outer circumference of the opening 51 is provided with a fitting portion 52 that fits with the fitting portion 46 of the lid 40. The specific structure of this fitting portion 52 and the fitting portion 46 of the lid 40 is not particularly limited as long as the lid 40 can be attached to and removed from the body 50 and is in an airtight engagement state when attached. Examples of such structures include those with stepped portions in the engaging areas, and those with male and female threads that screw together. In this embodiment, a packing (sealing member) 49 is placed between the fitting portion 46 and the fitting portion 52 to ensure airtight engagement between the two (see Figure 5). When storing the inner pouch 21 of the bag-shaped container 20 in the body 50, the expected procedure from the standpoint of ease of handling and convenience is to place the bag-shaped container 20 in the body 50, set the lid 40 on the body 50, and secure it with the lid fastener locking member 45 so as to sandwich the dispensing part 22, thereby ensuring airtightness at two points at once.

[0039] [Means of pressurizing the holder] The pressurizing means 60 is a means for increasing the internal pressure in the space within the holder 30 (the space between the inner pouch 21 of the bag-shaped container 20, the lid 40, and the body 50) to create a positive pressure state, with the lid 40, which sandwiches the bag-shaped container 20, attached to the body 50. In this embodiment, a manual air pump 61 is used as an example of such a pressurizing means 60 (see Figure 1, etc.). The air pump 61 is positioned in a location easily accessible to the user, for example, on the side of the abdomen 53 of the body 50, and each time the user performs a pushing operation, it draws in air from the intake port 61c and sends it into the interior of the body 50 through the exhaust port 61e (see Figures 1 and 7A). The air pump 61 may have a structure that circulates around the abdomen 53, or it may have a single pump or a set of two pumps arranged opposite each other (see Figure 1). When the liquid food container 10 is tilted and pressurized to create positive pressure inside, the pressurized air acts to cause the liquid food M inside the bag-shaped container 20 to be discharged from the discharge port 24d (see Figure 7A).

[0040] [Holder's posture-reactive air valve] The posture-reactive air valve 70 is a valve that switches between a state in which the inside of the holder 30 can be pressurized (in other words, a state in which airtightness is achieved) and a state in which it cannot be pressurized (in other words, a state in which airtightness is not achieved) depending on the posture of the holder 30. In this embodiment, the posture-reactive air valve 70, which consists of a valve opening 71 and a rolling element 72, is provided on the lid 40 (see Figure 4). The valve opening 71 is made up of a frustoconical cylinder whose inner diameter gradually decreases as it extends upward. The rolling element 72 consists of a spherical body (for example, a resin sphere) installed inside the valve opening 71 so as to move by its own weight, and when the holder 30 is tilted beyond a predetermined angle, it moves to the upper end of the valve opening 71 and closes the valve opening 71 (see Figures 4 and 5). In a holder 30 equipped with such a posture-reactive air valve 70, when the holder 30 is tilted so that the discharge port 24d faces downward to discharge liquid food M, the rolling element 72 moves under its own weight and closes the valve port 71 (see Figure 7A). When the rolling element 72 closes the valve port 71, the internal space of the holder 30 is isolated from the outside, and the inside of the holder 30 becomes pressurized (exhibiting airtightness). In this state, when the user pushes in the air pump 61, the air in the internal space is pressurized, causing the liquid food M in the bag-shaped container 20 to be discharged from the discharge port 24d (see Figure 7A).

[0041] As described above, the posture-reactive air valve 70 makes it possible to prevent the liquid food M from unexpectedly spraying out. In other words, since the posture-reactive air valve 70 is open and in a state where it cannot be pressurized (not airtight) except when the liquid food M is being used (when it is desired to be dispensed), even if the air pump 61 is accidentally pressed in or the air pump 61 is pressurized by something, no external pressure acts on the inner pouch 21, so even if the overcap 26 is open, the liquid food M will not spray out. This is also true when a flexible and easily deformable container is used as the body 50.

[0042] [Holder's internal pressure-reactive air valve] The internal pressure-reactive air valve 80 is a valve that closes when the internal pressure of the holder 30 is increased to a predetermined value and opens when pressurization stops and the internal pressure drops. In this embodiment, the lid 40 is provided with an internal pressure-reactive air valve 80, which is a so-called swing check valve consisting of a valve port 81 and a valve body 82 (see Figure 4, etc.). The valve port 81 is configured, for example, in a roughly rectangular cylindrical shape. The valve body 82 has a flexible plate-shaped member 82t, and is provided at the opening of the valve port 81 such that the plate-shaped member 82t moves only toward the body 50 side (see Figure 4, etc.).

[0043] As described above, the internal pressure-reactive air valve 80 makes it possible to improve the liquid drainage after dispensing the liquid food M (the property that when dispensing is complete, the liquid food M quickly flows back from the discharge port 24d, and dripping from the discharge port 24d is suppressed). In other words, in a liquid food container 10 like this embodiment, which uses an air pump 61 as the pressurizing means 60, the pressurized state inside the holder 30 is relieved only by the dispensing of the liquid (liquid food M), so there may be problems with liquid drainage when dispensing is complete. In this regard, by providing the internal pressure-reactive air valve 80 as described above, when dispensing is complete, more specifically when the user who has finished dispensing the desired amount of liquid food M releases the pressurization to the air pump 61, the valve body 82 moves and opens in response to the instantaneous change (decrease) in internal pressure, and air flows into the holder 30 from the outside through the internal pressure-reactive air valve 80 (see Figures 7A and 7B). The air flowing into the holder 30 instantly relieves the pressurized state inside the holder 30, so the magnitude of the external pressure acting on the bag-shaped pouch 20 instantly decreases, causing the liquid food M to quickly flow back out from the discharge port 24d. This series of actions improves the liquid drainage after the liquid food M has been discharged.

[0044] With the liquid food container 10 of this embodiment as described above, the user does not need to directly press the bag-shaped container 20 from the outside with their hands to apply pressure, but can instead operate the pressurizing means 60, which is an air pump 61, to increase the internal pressure of the holder 30 and dispense the liquid food M (see Figure 7A). In this case, the series of operations is less troublesome and inconvenient than when the bag-shaped container 20 housed in a holder (not shown) with an opening is directly pressed from the outside to apply pressure, and it is easier to dispense the liquid food M. Furthermore, with the liquid food container 10 of this embodiment, since the inner pouch 21 of the bag-shaped container 20 can be used while it is housed in the holder 30, the problem of the bag-shaped container 20 shrinking as the amount of liquid decreases during use, making it difficult to maintain its self-supporting position and reducing ease of use can be resolved. In addition, the holder 30 used in the liquid food container 10 described above can be reused regardless of the remaining amount of liquid food M. When the liquid food M is used up, only the bag-shaped container 20 is discarded, and a new bag-shaped container 20 is attached to the holder 30 for repeated use. At this time, the bag-shaped container 20 can be rolled up or folded to make it smaller for disposal, which is preferable from the standpoint of minimizing the space required for disposal. Furthermore, repeatedly using the holder 30 leads to a reduction in the total amount of resin used in the liquid food container 10.

[0045] The above-described embodiment is merely one example of a preferred implementation of the present invention, and is not limited thereto. Various modifications are possible without departing from the spirit of the present invention. For example, the above-described embodiment utilized an air pump 61, but this is merely one preferred example of a configuration forming the pressurizing means 60. Another example of the pressurizing means 60 will be described below as another embodiment of the present invention (see Figures 8 to 9B).

[0046] [Another embodiment] In the liquid food container 10 of this embodiment, the body 50 constituting the holder 30 has a flexible portion 54 that is less rigid and more flexible than the fitting portion 52 in at least a part of the body excluding the fitting portion 52 (see Figures 8 and 9A). In this case, it is preferable that at least a part of the side (belly 53) of the body 50 be the flexible portion 54. Such a body 50 can be made of a soft material such as silicone, and the part including the fitting portion 52 is hardened (molded thicker, embedded with a metal ring, etc.). In such a liquid food container 10, the user can simply grip (squeeze) the flexible portion 54, which then functions as a pressurizing means, pressurizing the inside of the holder 30 and allowing the liquid food M to be dispensed (see Figure 9A). Furthermore, the structure and function of the posture-reactive air valve 70 and the internal pressure-reactive air valve 80 are the same as those in the embodiments described above, preventing the liquid food M from unexpectedly spurting out and improving the liquid drainage after the liquid food M has been dispensed (see Figure 9B).

[0047] Alternatively, although not specifically shown in the figures, a flexible portion may be provided in the lid 40, and the manual air pump 61 may be configured so that small amounts of liquid food M can be dispensed in accordance with the deflection caused when the portion is pressed with a finger.

[0048] Up to this point, the present invention has been described using a container containing liquid food as an example of a preferred embodiment. However, considering its structure, characteristics, and effects, it goes without saying that the contents are not limited to liquid food. For example, the present invention can naturally be applied to containers for liquids used in cosmetics, toiletries, and the like. [Explanation of symbols]

[0049] 10…Containers for liquid foods (containers for liquid substances) 20...Bag-shaped container 20a...mouth 21…Inner pouch (filling section) 22...Discharge part 23... Exterior 23a...Cap mounting part 23b…Joint part 24...Inner bag cap 24d…Discharge port 24t...Top section 25... Check valve 25h... Valve hold 26… Overcap 30…holder 40... Lid 41…Engagement part (with bag-shaped container) 42… mating surface 43… Gasket (sealing material) 44...Hinge section 45...Lid fastener locking member 46…Matching part 49… Gasket (sealing material) 50... Torso 51…Opening 52…Matching part 53...Abdomen 54...Flexible part 60...Method of pressurization 61... Air pump 61c... Air intake 61e... Exhaust port 70…Posture-responsive air valve 71… Valve opening 72... Rolling element 80... Internal pressure-reactive air valve 81... Valve opening 82... Valve body 82t...plate-shaped member M... Liquid food (liquid substance)

Claims

1. A container whose contents are a liquid, A bag-shaped container having a filling section into which the liquid is filled as its contents, and a dispensing section for dispensing the liquid filled in the filling section, A holder for housing the filling portion of the bag-shaped container, Equipped with, The aforementioned holder is The bag-shaped container is provided with a removable engaging portion, and the lid engages airtightly with the discharge portion when the bag-shaped container is attached, The lid is provided with a removable fitting portion, and the lid engages airtightly with the body when the lid is attached to the fitting portion, A pressurizing means for increasing the internal pressure of the holder while the lid to which the bag-shaped container is attached is attached to the body, A container for liquids that has [a certain feature].

2. The liquid container according to claim 1, wherein a check valve is provided at the discharge portion of the bag-shaped container.

3. The container for liquids according to claim 1, wherein the body has a flexible portion in at least a part of the portion excluding the fitting portion that is less rigid and more flexible than the fitting portion.

4. The liquid container according to claim 3, wherein at least a portion of the side of the body is the flexible portion.

5. The liquid container according to claim 4, wherein the pressurizing means is composed of the flexible portion.

6. The liquid container according to claim 1, wherein the pressurizing means is comprised of an air pump that sends air into the holder.

7. The liquid container according to claim 6, wherein the air pump is provided on the side of the body or on the lid.

8. The container for liquids according to claim 1, wherein the engaging portion of the lid is composed of an engaging hole formed to a size that engages with the dispensing portion.

9. The container for liquids according to claim 8, wherein the engaging portion of the lid is formed on the mating surface of the detachable lid.

10. The liquid container according to claim 9, wherein an elastic sealing material is provided in the engagement portion.

11. A container for liquids according to any one of claims 1 to 10, further comprising a posture-reactive air valve that provides airtightness only when the holder is tilted beyond a predetermined angle.

12. The container for liquids according to claim 11, wherein the posture-reactive air valve has a rolling element that moves under its own weight and a valve opening that is closed by the rolling element when the holder is tilted beyond a predetermined angle.

13. The container for liquids according to claim 12, wherein the attitude-sensitive air valve is provided on the lid of the holder.

14. A container for liquids according to any one of claims 1 to 10, further comprising an internal pressure-reactive air valve that closes when the internal pressure of the holder is increased to a predetermined value by the pressurizing means, and opens when the pressurization stops and the internal pressure decreases.

15. The liquid container according to claim 14, further comprising a posture-reactive air valve that provides airtightness only when the holder is tilted beyond a predetermined angle.

16. A container for a liquid substance according to any one of claims 1 to 10, wherein the liquid substance is a soy sauce-containing seasoning.

17. A holder for containing the filling portion of a bag-shaped container in which a liquid substance, such as liquid food, is filled as the contents, The bag-shaped container is provided with a removable engaging portion, and when the bag-shaped container is attached, it has a lid that engages airtightly with the liquid discharge portion of the bag-shaped container, The lid is provided with a removable fitting portion, and the lid engages airtightly with the body when the lid is attached to the fitting portion, A pressurizing means for increasing the internal pressure of the holder while the lid to which the bag-shaped container is attached is attached to the body, A holder that has

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