JPH0684173B2 - Storage container bag - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fluid (including powdered fluid) storage bag with a check valve, which is provided with a plurality of storage bag portions made of a synthetic resin film. .

(Prior Art) Conventionally, in this type of flexible synthetic resin film bag, the storage bag portion is welded to the two front and back films, and is divided into a plurality of rooms by the seal portion. It is widely known as a life jacket and a food broadcasting container.

On the other hand, as a non-return valve attached to this type of storage bag, there is known a check valve made of a synthetic resin injection molded product or a so-called valve sack made of a flat synthetic resin film tube (for example, Japanese Patent Laid-Open No. Sho 50). -2317, JP-A-51-3435
No. 1, and JP-A-51-34351).

In addition, an air bag in which several compartments are individually provided with openings with stoppers is also known from Utility Model Publication No. 55-30117.

(Problems to be solved) However, a check valve is provided at the above-mentioned known air pillow, air mat, and air inlet of the life jacket, and the storage bag is divided into a plurality of rooms. However, the air is formed so as to circulate between the compartments. Therefore, if any compartment breaks, the air in the room escapes, and the compartment cannot be used at all.

On the other hand, although there are continuous bags divided into small compartments such as food, each storage bag part is completely independent, and when filling fluid, each storage bag part must be individually filled with fluid. In addition, filling is troublesome and inefficient, and there is no continuous bag of this type with a check valve.

Also, in the above-mentioned Japanese Utility Model Publication No. 55-30117, an opening with a plug is provided but a check valve is not provided, and air must be injected into each air chamber from each opening. It must be done in one shot.

Also, there is a relatively large single bag to which a valve suck type check valve is attached as described in each of the above patent publications. As mentioned above, it is not divided, and the valve sack always requires a filling nozzle when filling the fluid,
Even if this valve sack is attached to each compartment, it cannot be filled all at once.

In addition, there is Japanese Patent Application No. Sho 62-16626 (No. Hei 1-164142) that can enclose air into several air-filled parts, but if the check valve is composed of a thin film, it will blow air. At times, there is no guarantee that they will always open, and if the valve mounting position is slightly misaligned, air may not be blown at all.

Therefore, according to the present invention, even if the fluid storage bag has a plurality of storage bag portions as described above, all the storage bag portions can be surely collectively filled from only one place at the time of filling, and after storage, each storage bag portion is filled. Independently of each other, even if some of the fluid in it is taken out or some of the storage bags are broken, the sealed state can be maintained without affecting the other storage bags. It is to be.

Further, it is to simplify the structure of the check valve provided in each fluid storage portion so as to eliminate a failure.

Another problem to be solved is to prevent the sheet from being bulky when the fluid is not filled.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a fluid introduction part having a single injection port between two front and back films, and a plurality of housings for the fluid introduction part. The bags are arranged in parallel, the front and back sides 2
The film is partitioned by a seal part that is welded to each other, and the seal part that forms the boundary line between the fluid introduction part and each storage bag part, the fluid flows only from the fluid introduction part to the storage bag part side, Check valves that do not flow in the opposite direction are provided, and each check valve is a flat tube formed by stacking two flexible synthetic resin flat films and heat sealing both sides to form a flat tube. The primary side end portion of one of the films, which is open to the fluid introduction portion, is slightly relaxed in the width direction with respect to the other side film, and only in this portion, a gap is formed between the two films. The other parts are respectively located in the storage bag part,
The flat tubes made of synthetic resin film or sheet are characterized in that the films on the front and back of the flat tube are put in close contact with each other in the film of the storage bag part.

In addition, the injection port may be provided at one of the one end and the middle of the fluid introducing portion.

Further, the fluid introducing portion may be branched.

Further, the storage bag portion may have an opening portion which is provided with the second check valve and opens to the outside of the adjustment.

As the sheet or film used in the present invention, various plastics such as polyethylene, polypropylene, nylon, polyester, polyvinyl chloride, rubber, or leather in which a backing cloth is laminated is used.

(Operation) In the present invention configured as described above, it is in a flat state when the fluid is not contained, that is, when not in use, and the storage container bag is filled with fluid (air, gas, fluid, powder particles). To fill the body), insert these discharge nozzles into the inlet of the fluid introduction part and inject with a slight pressure, the fluid first flows into the fluid introduction part, and the pressure in this is higher than the atmospheric pressure. They rise slightly and swell, push them open from the primary sides of the check valves that are open to the fluid introducing portions, and flow into the respective storage bag portions.

If the fluid can be sufficiently injected into each storage bag float, when the discharge nozzle is removed from the inlet, the pressure in the fluid introduction part decreases, and each check valve has a dynamic pressure during reverse flow and the inside of the storage bag part. Closed by the pressure ribs.

When the fluid in each storage bag is to be taken out, all the storage bags are arbitrarily ruptured and taken out, or a similar second can be directly opened directly to the outside of each storage bag.
Attach the check valve of, and insert the straw-shaped pipe into it and take it out. Furthermore, in the empty state where no fluid is stored, the thickness of the storage film and the check valve film is added, and when the fluid is injected into the fluid introduction part, the check valve made of each film is That is, on the side of the fluid introducing portion, one of the films is relaxed, and the two films of the check valve are pushed open from the part where the gap is formed, and the two films flow into each storage bag part.

When the injection nozzle is removed, the flat tube portion that constitutes each check valve in each storage bag becomes flat and closes due to the dynamic pressure and internal pressure at the time of reverse flow.

(Effect) In the unused product of the present invention, the film is flat in a close contact state with the film on the front and back of the storage container bag, and it is not bulky to store or carry during the distribution process of the product, and it is a life jacket. Perfect as an air pillow, air mat. Also, when used for air packing, the storage container bag may be inserted or sandwiched in a gap requiring packing before being filled with air.

As described above, in the invention according to claim 1 of the present application, when each check valve injects fluid from a single inlet from the fluid introducing portion side, any one of the reverse valves is accompanied by a rise in pressure in the fluid introducing portion. The stop valve is also pushed open to allow the fluid to flow into the respective storage bag portions, and all the storage bag portions are filled to the same pressure.

Next, once the storage bags are filled with fluid, backflow is blocked by the check valves provided in the storage bags independently of each other, and the fluid is stored independently in each storage bag. It is kept sealed.

Therefore, even if any one of the storage bag parts is opened, it does not affect the sealed state of the other storage bag parts, and that state is maintained.Therefore, in the life jacket and the floating bag, Even if a part of the storage bag portion is broken, the buoyancy of the remaining storage bag portion is maintained and the safety is improved.

In addition, in other liquid kneaded products and those packed with powder particles, no matter which storage bag part is opened, the other bag parts are not affected, and in these unopened storage bag parts. The sealed packaging state is maintained, and the internal fluid can be used for each storage bag unit.

Further, in the invention according to claim 1, the thickest part of the present invention in the unused state is the part with each of the above-mentioned check valves, but since the structure of each check valve is as described above, In addition to the thickness of the two films that make up the check valve,
Only the sum of the slightly loose wrinkled part and the thickness of the two films of these outer storage bags is almost the same thickness as the conventional bag with a valve sack type check valve and is extremely thin. It is not bulky during storage or product distribution process, and even when used as an air packing, it is easy to insert the unused flat product of the present invention into a gap requiring packing or sandwich it. Out.

Further, in the invention according to claim 1, even if a fluid injection nozzle is not inserted in each check valve, one film is relaxed on the primary side of each check valve that is open to the fluid introducing portion side. Therefore, a slight gap is formed, the pressure of the fluid introduction part acts on this gap part, pushes each check valve open, and due to the pressure difference between the fluid introduction part and each storage bag part,
Fluid is filled into each storage bag through each check valve, and regardless of the number of each storage bag, the fluid can be injected into each storage bag from a single inlet collectively. The labor of is simplified.

In the invention according to claim 2, wherein the fluid introducing portion is formed in a straight line, the resistance at the time of injecting the fluid is small, and the fluid can be injected in a short time.

In the invention according to claim 3 in which the fluid introducing portion is branched, the distance from the injection port to each storage bag portion is short, and the injection resistance is small.

In the invention according to claim 4, wherein each storage bag portion is provided with a second check valve opening opening directly to the outside, a straw-shaped pipe is arbitrarily inserted into this opening. A required amount of fluid can be taken out from the storage bag portion, and each storage bag portion can be repeatedly used a plurality of times.

The container bag of the present invention configured as described above and having the action and effect is suitable for a floating bag in the case of air, a life jacket, an air mat, a packing for packing, and other air bag type umbrellas. For liquids, seasonings, drinking water,
Suitable for filling other liquids, and in the case of powder, filling of sugar, salt, flour, fertilizer, detergent powder, etc.

In addition, it is also suitable for packaging small granules and grains.

(Embodiment) The present invention will now be described based on a representative embodiment shown in the drawings.

Embodiment 1 As shown in FIG. 1 to FIG. 5, A is the storage container bag of the present invention, and generally, two synthetic resin sheets,
Or, it is made of a sheet made of laminated backing cloth, or made of thin films 11 and 12, and several independent storage bag parts 14 and 14 by a sealing part 13 such as heat sealing and harmonic welding. It is partitioned from a single fluid introduction part 15, and the fluid introduction part 15 is a narrow passage, and each storage bag part 14, 14 ...
By contrast, they are formed adjacent to each other in parallel.

Of the seal portion 13, check valves 16, 16 are provided in the seal portion 13a that forms a boundary between the storage bag portions 14, 14 ... And the fluid introduction portion 15.
One is provided for each storage bag portion 14, 14 ...

The specific structure of the check valves 16, 16 ... Is as shown in FIG. 2, and is composed of a flat tube made of a flexible synthetic resin film, one film 17 of which is the primary film with respect to the other film 18. At the side end 20, the films 17 and 18 are sealed by valve seal portions 19 on both side edges while being slightly relaxed in the width direction, and only the primary side end 20 has two films 17 and 18.
A gap 22 is formed between 18 and the two films 17 and 18 are formed so that they can be completely adhered to each other near the secondary side 21, and the check valves 16, 16 ... The primary side end 21 of the check valve 16 is slightly projected into the fluid introducing part 15, and the secondary side 21 part is located almost in the accommodating bag part 14 from FIG. 3 to FIG. As shown in Fig. 1, one film 17 is longer than the other film 18, and these films are in close contact with each other (see Fig. 5) and separated from each other (Fig. 4).
It is formed as a reference.

Only one end of the above-mentioned fluid introduction part 15 is the injection port 3 which is open to the outside air.

Embodiment 2 As shown in FIG. 6, each storage bag portion 14 is provided in parallel on one side of the fluid introducing portion 15, and the inlet 23 is the fluid introducing portion 15.
1 is different from the first embodiment in that it is provided at an intermediate position, and other parts having the same reference numerals as those in the first embodiment show the respective components having the same structure.

Third Embodiment The same reference numerals as those in the first and second embodiments indicate the same components.

The difference is that the fluid introduction path 15 is branched into two branches (see FIG. 7).

Embodiment 4 As shown in FIG. 8, the same reference numerals as those in the embodiment are the same components.

The difference is that each storage bag portion 14 is provided with an opening 25 with a second check valve 24 that is directly opened to the outside.

In each of the embodiments, when a fluid consisting of small-sized granules or cereals is put in, each storage dew unit 14 is, of course, provided with a deaeration gap where only the air can be deaerated without spilling these small-sized fluids. is there.

(Operations and Effects of Embodiments) Of course, in all the embodiments, the same operations and effects as those of the invention of the present application can be obtained, but in the embodiment 1, the fluid is introduced into the fluid introducing portion 15. The fluid acts as an internal pressure on a slight gap 22 at the primary side end 20 of each check valve 16 arranged on the left and right of the fluid introducing portion 15, and pushes the check valves 16 wide as shown in FIG. It flows into each storage unit 14. When the injection is stopped, the pressure in the fluid introduction part 15 is reduced, and the valve films 17 and 18 on the front and back sides thereof are in close contact with each other and are completely sealed.

In Examples 1 to 4, the check valve 16 is made of film as described above, and therefore, in the unused state, even if the check valve portion is thickest, all the films and sheets are Even if it is stored, it can be stacked or rolled up in a roll shape, and is convenient to carry, as it only slightly increases the thickness.

In addition, when filled with fluid, the entire storage bag 14
Since it has a planarly connected shape, it is possible to stack it while filling it with fluid.

In the embodiments and 3, the fluid introducing portion 14 is branched from the inlet 23 into two hands, so that the passage dimension of the fluid introducing portion 15 to the storage bag portion 14 of the terminal is short, and the pressure loss at the time of injection is small. There is no need to increase the injection pressure.

In the fourth embodiment, since each storage bag portion 14 has the opening 25 with the second check valve 24 that directly opens to the outside, any of the storage bag portions 14 is not broken. Storage bag
The required amount of fluid can be taken out from 14. Also, this embodiment can be used several times.

[Brief description of drawings]

1 shows a plan view of the first embodiment, FIG. 2 is a perspective view of a check valve, and FIG. 3 is a partially omitted view of an unused state. -3 line vertical sectional side view, FIG. 4 FIG. 3 vertical sectional side view during partial fluid injection, FIG.
Fig. 6 is a vertical sectional side view of Fig. 3 after the fluid is injected,
7 is a plan view of the second embodiment, FIG. 7 is a plan view of the third embodiment, and FIG. 8 is a plan view of the fourth embodiment. Main symbols A in the figure: A storage bag, 13 seal part, 14 storage bag, 15 fluid introduction part, 16 check valve.

Claims (4)

[Claims] 1. A fluid introduction part having a single injection port between two front and back films, and a plurality of storage bag parts arranged in parallel to the fluid introduction part, and the two front and back films are welded to each other. The seal part is defined by the sealed seal part and forms a boundary line between the fluid introduction part and each storage bag part. The fluid flows only from the fluid introduction part to the storage bag part and does not flow in the opposite direction. One stop valve is provided for each storage bag, and each check valve is a flat tube formed by stacking two flexible synthetic resin flat films and heat sealing both sides. The primary side end portion of one of the two films, which is open to the fluid introduction portion, is slightly relaxed in the width direction with respect to the film on the other side, and only at this portion is the space between the two films. There is a gap in the Respectively it is positioned in the storage bag portion,
A flat storage container bag made of a synthetic resin film or a sheet, characterized in that the films on the front and back of the flat tube are attached to the film of the storage bag part so that they are in close contact with each other. 2. The storage container bag according to claim 1, wherein the inlet is provided at one of the one end and the middle of the fluid introducing portion. 3. The storage container bag according to claim 1, wherein the fluid introducing portion is branched. 4. The storage container bag according to claim 1, wherein each of the storage bag portions has an opening portion provided with a second check valve and opening directly to the outside.