JP3027458U - Small container for liquid - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a small container for liquid which has a low bulk in an empty state and can be reduced in volume in a state of containing a liquid according to the amount of the liquid inside. SOLUTION: A flexible waterproof sheet having two front and back sides is closed at its peripheral edge, and has a liquid inlet and a liquid outlet, and when liquid is not injected inside. It has a flat shape and is capable of expanding its own internal volume as the liquid is injected into the inside, and the injection port is configured to prevent backflow of the liquid after the liquid is injected.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a small liquid container, and more particularly to a small container for stockpiling water and the like in case of disaster, a small container for leisure, and a small container for selling water, juice and the like.

[0002]

[Problems to be solved by conventional techniques and devices]

 As a small container for liquids that belongs to the above technical field, there is a container formed three-dimensionally from a rigid body such as metal or synthetic resin. In addition to the liquid inlet, these containers are provided with small holes for discharging the air inside the container to the outside so that the air can be easily injected by discharging the air inside. .

Since the volume of such a rigid container is constant, the difference between the volume of the container and the volume of the filled liquid becomes a dead space when the container is not filled with the liquid. . That is, the liquid storage efficiency is poor.

In order to solve such a problem and increase or decrease the volume of the container in accordance with the increase or decrease in the volume of the contents, the narrow neck of the mouth made of a thin plastic film is used as the injection port. It is possible to use one.

However, this bag has the following problems. That is, in the case of products used for selling contents such as refill containers such as shampoo and detergent, the inlet is heat-sealed at the end of liquid injection. The air inside the bag cannot be discharged to the outside if it is sealed. Even in the case of a bag using a well-known check valve as an inlet, such as in the case of a water storage bag or a leisure bag in the event of a disaster, the air inside the bag will not flow from the check valve to the outside after the liquid is injected. I don't see it. As long as air remains inside the bag, it is impossible to change the shape of the bag according to the volume of the contents.

The present inventor can easily conform the shape of the container to the shape or volume of the liquid in the bag formed of the thin waterproof sheet by allowing the air inside to escape to the outside after the liquid is injected. The idea was to provide a small container for liquids.

[0007]

[Means for Solving the Problems]

 The small container for liquid according to claim 1 is formed by closing two flexible front and back waterproof sheets at the periphery thereof, and has an inlet for liquid and an outlet for liquid, When the liquid is not injected into the inside, it has a flat shape and can expand its own internal volume as the liquid is injected into the inside. It is configured to prevent the above.

A small container for liquid according to a second aspect is the small container for liquid according to the first aspect, wherein the inlet is sealed after the liquid is injected.

The liquid small container according to claim 3 is the liquid small container according to claim 1, wherein the inlet is a flat tubular body formed of a highly flexible waterproof sheet. The check valve is arranged so that one end side in the axial direction of the check valve is inside and the other end side of the check valve is outside.

A liquid small container according to a fourth aspect is the liquid small container according to any one of the first to third aspects, in which a liquid is not stored inside the small container. The outlet is arranged in the plane to which the container belongs. The container of this invention may be flat and square, and in that case, the outlet may be extended from one side edge thereof. At this time, the discharge port may be flattened and gently tapered so that the width becomes slightly narrower toward the front end side. By doing so, the front and back films forming the discharge port do not come into close contact with each other, and the liquid can smoothly flow out. If the long outlet is folded over the belly of the bag body and its tip is secured to the bag body with adhesive tape, the liquid will not leak. In addition, if the bags are stacked vertically in this state, the tip of the discharge port will not come off due to being pressed by the upper bag.

The bag of the present invention is premised on being formed of two waterproof sheets on the front and back sides, but a bag having gussets on the entire circumference, both sides, or one side is also included. .

[0012]

[Work]

 That is, the front and back films are in contact with each other before the liquid is poured into a completely flat shape, and the shape or bulk of the container increases as the amount of the liquid to be poured increases. After injecting the liquid, the air in the container is exhausted to the outside through the exhaust port, so that the outer shape of the container can be made to completely conform to the volume or shape of the liquid inside. That is, a storage efficiency of approximately 100% can be obtained.

[0013]

[Embodiment of device]

 Reference numeral 10 denotes a structure in which two front and back plastic films 10a and 10b are heat-welded on the periphery of the plastic films 10a and 10b at locations indicated by hatching.

In the portion demarcated by the heat-welded portions 12, 14, 16, 18, 20, and 22, between the two front and back sheets 10a and 10b forming the bag body, another two front and back sheets are provided. 11a and 11b are inserted. The welding parts 12 and 22 are formed by integrally heat-sealing four films. In the welding portion 14, the two films 10a and 11a on the front side of the paper surface are welded, and apart from this, the other two films 11b and 10b on the back side of the paper surface are welded together. . Then, in the welded portions 16, 18, 20, the front and back sheets 11a, 11b inserted into the bag body are heat-welded. Also in the other two welding lines 24 and 26, the two sheets 11a and 11b inserted in the bag are welded.

Further, four sheets are welded together in the welding portion 30, and two films 10a and 11a on the front side of the paper surface are welded to each other in the welding portion 32. Two films 11b and 10b on the back side are welded. Similarly, in the welded portion 34, a total of four films 10a, 11a, 11b, 10b are welded together.

Because of this, the portion 28 defined by the welded portions 14, 32, 34 functions as a funnel when pouring water. Further, the subsequent portion demarcated by the welded portions 24, 26, 18 constitutes a flat tubular injection valve 36. In the vicinity of the welded portion 18 at the tip of the injection valve 36, a notch 38 is provided in the film 11a on the front side of the paper forming the injection valve 36. When the portion 28 is inserted into a tap of a water supply and the water is injected, the water passes through the valve body 36 and is injected into the bag through the notch 38. Then, when the bag is filled with water and the water reaches above the notch 38 in the posture of FIG. 1, the front and back sheets 11a and 11b forming the valve body 36 are caused by the internal pressure in the bag, that is, the water pressure. They are crimped together to prevent backflow of water.

The portion demarcated by the welded portions 16, 26, 30 constitutes a sheet-shaped surplus portion 40. The portion defined by the welded portions 20, 22, 24 constitutes another sheet-shaped surplus portion 42. Sheet-shaped surplus portions 40 and 42 are continuously provided on both left and right sides of the injection valve 36, and these sheet-shaped surplus portions 40 and 42 are integrally welded to the bag body 10 at the welding portions 12, 22, and 30.

With such a configuration, the portions 36, 40, 42 are wide in the longitudinal direction and the width direction as a whole and have a large area, and at least the two sides thereof are welded at the periphery of the bag body. It is welded at the part. Therefore, even if the force to bend the tip side of the injection valve 36 acts, the portions 36, 40, 42 having a large area resist as a whole and prevent the bending. Moreover, even if the whole body is bent, it is easy to restore the original posture, that is, the flat posture.

As shown in detail in FIG. 6, the injection valve 36 is not opened at the tip 38 thereof in the lower right direction in FIG. 1, but a cut 38 is provided in the seat 11 a on the surface side of the injection valve 36. The left and right sides of the cut 38 in FIG. 6 form a step, so that an opening is formed in the cut 38, and water is injected into the bag from this portion. In this way, since one sheet is originally forced to generate a step, it is easy to quickly return to the original state, that is, a completely flat state, by eliminating the pressure of water injection. Therefore, there is no risk of backflow of water from this opening.

Reference numeral 54 is a discharge port provided on the right shoulder of the bag body. The discharge port 54 is elongated and extends upward. A male member 56 of a surface fastener (trademark: Velcro fastener) is provided on one surface of the tip side (the back surface side in FIG. 5), and another male member 56 is provided on the base side of the same surface with a slight gap. A member 58 is provided. Further on the base side, the female member 60 is arranged on the other surface (the front surface side in FIG. 5). A male member 62 is arranged below this with a slight interval. An extension piece 64 extends laterally from the side edge of the bag body 10 at the location where the female member 60 and the male member 62 are provided. Two other female members 66 and 68 are attached above and below the extension piece 64.

From the ejection posture in which the ejection port 54 extends in FIG. 5, bend the tip end side of the ejection port 54 to the side opposite to the side where the male member 56 is provided (the front side of the paper surface in FIG. 5). Fold it on the base side of the outlet (Fig. 4). Next, the thus folded pieces are further folded on the base side. At this time, the male member 56 on the front end side is superposed on the female member 60, and both are entangled (FIG. 3).

From this state, the extension side 64 is folded on the bag body side. As a result, the two female members 66 and 68 above and below the extended side engage with the male member 60 and the male member 62, and the sealing of the discharge outlet 54 is completed (FIGS. 1 and 2).

By providing the surface fastener at the discharge port as described above, it is possible to prevent water from leaking from the discharge port. At that time, as shown in FIG. 3, even if the outlet 54 is bent twice, there is some effect in preventing water from leaking out. However, by stacking the extension piece 64 on top, as shown in FIG. Since the extension piece 64 can hold the wound state of the discharge port, leakage of water can be prevented more reliably.

Extension pieces 70, 72, 74 are provided on three sides of the bag body 10 excluding the upper end portion. Holes 76 are provided in these extension pieces and the portions defined by the welded portions 12, 30, 34. When carrying this bag in an appropriate posture, it is sufficient to put a finger through the appropriate hole 76 and lower it.

The position at which the discharge port is provided and the shape thereof are arbitrary. However, the entire bag 10 must be located within the main plane formed by the two front and back sheets 10a and 10b that form the main body of the bag or located in another plane close to and parallel to this plane. It is preferable because it is flat.

When the air inside the bag (FIG. 8) is discharged to the outside from the outlet by manually compressing the bag after injecting the liquid, the volume or shape of the bag is low because it follows that of the liquid inside. (Fig. 9).

FIG. 10 shows another embodiment. This is also one in which two front and back plastic films 10a and 10b are heat-welded at their peripheral edges. The upper end of the narrow mouth / neck portion 81 is opened. A portion defined by the welded portions 82 and 83 and the peripheral edge of the bag body is composed of four sheets similar to those in the above-described embodiment. The two sheets 11a and 11b in the bag body are welded by the welding portions 80 and 82 to form a valve body 84 defined by the two. At the position of the bag body peripheral edge 86 of the valve body 84, the front side sheet 10a constituting the bag body and the front side sheet 11a of the valve body 84 are welded together, and the back side of the bag body at the back side of the valve body 84. The side sheet 11b and the backside sheet 10b forming the bag body are welded together. As a result, the valve element 84 opens outward at the bag-side edge portion 86. Adjacent to the valve body 84, a sheet-shaped surplus portion 88 defined by the welded portions 80 and 83 is provided. Since the valve body 84 and the sheet-shaped surplus portion 88 are integrally formed, the valve body 84 is wide as a whole and has a large area. The upper end of the sheet-like surplus portion 88 is welded to the bag body. With this configuration, the tip end side 90 of the valve element 84 does not easily bend and overlap.

In this embodiment, a gusset 92 is provided on the left side of the mouth / neck 81 in the drawing. The lower end 93 of the gusset 92 is heat-welded. As a result, when the water in the container is tilted and discharged from the mouth / neck portion 81, the gusset 92 in the mouth / neck portion 98 spreads, and the mouth / neck portion 81 has a substantially triangular cross section. become.

An oval bottom member 94 is provided at the bottom of the container 10. When the bag body is flat as shown in the drawing, the bottom member 94 is folded back along the center line 95. The sheet piece on the front side of the sheet folded back in this manner is welded to the sheet 10a on the front side constituting the bag body at the welding portion 96, and the sheet piece on the side opposite to the paper surface is attached to the sheet 10b on the side opposite to the paper surface of the bag body. It is welded. In this way, when the bag is filled with the liquid, the bottom member 94 expands in the direction perpendicular to the paper surface to form a substantially flat bottom.

Reference numeral 97 denotes a handle, which has a hole 98 for carrying it.

FIG. 11 shows another embodiment of the present invention, which is a modification of FIG. Differences from the case of FIG. 1 are as follows. The injection valve 36 extends in the lower left direction from the opening 14 at the upper right in the figure. In this case, the sheet-shaped surplus portion 42 is provided only on the left side in the drawing of the injection valve 36, and is not provided on the right side.

The surface fasteners on the right shoulder are as follows. A male member 57 of a hook-and-loop fastener is provided on the upper end of the discharge port 54 in a substantially square shape, and a vertically long male member 59 is arranged on the slightly left side of the base of the discharge port 54. On the other hand, the same vertical female member 65 corresponding to the vertically long male member is arranged at the right end of the extension piece 64 in the figure, and another substantially square female member 67 is arranged on the upper left side of the female member 65. It is being touched. This is intertwined with the male member 57 at the tip of the outlet 54. The vertically-extending male member 59 and female member 65 are intertwined with each other. That is, the discharge port 54 is folded in two at an intermediate position in the direction above, and is folded over the portion 69 in this state, and at this time, the male member 57 is directed to the front side of the paper surface and above it. The long piece 64 is folded over.

Instead of the check valve as described above as the injection port, a simple opening may be provided at the peripheral edge of the bag body, and the opening may be heat-sealed after the liquid is injected. Also in this case, the air inside the bag can be discharged to the outside after the sealing and the volume of the bag can be reduced.

In the above embodiment, the plastic film is heat-welded to form the bag, but instead of this, the film is formed by high-frequency welding, ultrasonic bonding, adhesive bonding, or any other suitable means. The bag may be joined to form a bag, or the bag may be integrally formed.

Further, the discharge port or the mouth / neck part may be made of another material and joined to the bag body part by heat welding or the like. In this way, the bag body can be formed of a thick film and the outlet or mouth / neck can be formed of a thin film, and the outlet or mouth / neck can be easily folded to prevent water leakage. Prevention can be made more reliable.

[0036]

[Effect of device]

 Since it has a completely flat shape before liquid injection, it has good loading efficiency during transportation from the manufacturer of the container to users and storage efficiency during storage. In addition, the shape or bulk increases as the amount of liquid to be injected increases, and the air inside the container is discharged to the outside after the liquid has been injected, so that the outer shape of the container is completely adjusted to the volume or shape of the liquid inside. Since the liquid storage efficiency can be adjusted, the liquid storage efficiency of almost 100% can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view showing a bag according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where liquid is injected into the bag shown in the previous figure.

FIG. 3 is an enlarged front view showing a first state in the process of deploying the discharge port.

FIG. 4 is a diagram showing a state following the previous figure.

FIG. 5 is a diagram showing a state in which a discharge port is completely extended and discharge is possible.

FIG. 6 is an enlarged view of a main part of an injection valve.

FIG. 7 is a sectional view of an injection valve.

FIG. 8 is a sectional view of FIG. However, it shows the state before the air is discharged.

FIG. 9 is a sectional view of FIG. However, it shows the state after the air is discharged.

FIG. 10 is a plan view showing a bag according to another embodiment of the present invention.

FIG. 11 is a plan view showing still another embodiment.

[Explanation of symbols]

 10 ... Bag body 36,84 ... Injection valve 40,42,88 ... Excessive portion in sheet form

Claims (4)

[Scope of utility model registration request] 1. A front and back two highly flexible waterproof sheet is formed by closing its peripheral edge, and has a liquid inlet and a liquid outlet, and no liquid is injected inside. Sometimes it has a flat shape and can expand its own internal volume as the liquid is injected into the inside, and the injection port is configured to prevent backflow of the liquid after the liquid is injected. A small container for liquids that is characterized by 2. The small container for liquid according to claim 1, wherein the injection port is sealed after the liquid is injected. 3. The small container for liquid according to claim 1, wherein the inlet has a flat cylindrical check valve formed of a highly flexible waterproof sheet, and one end side in an axial direction thereof. A small container for liquids, characterized in that the other end is arranged inside the container as desired. 4. The small container for liquid according to any one of claims 1 to 3, wherein the inlet and the outlet are within a plane to which the container belongs when the liquid is not stored inside. A small container for liquids that is distributed.