JPH01199857A - Storage container bag - Google Patents

Abstract

PURPOSE:To fill all the storage bags from one spot simultaneously and keep the sealing condition, by arranging a check valve by which a fluid flows only from the fluid entrance part to storage bag, at the sealed part which makes a boundary line between the fluid entrance part and each storage bag. CONSTITUTION:A fluid, which has been injected in a fluid entrance part 15, acts as internal pressure to small clearance 22 on the primary side end 20 of respective check valves 16, which are arranged in a row on the right and left sides, opens the check valves 16 and flows into respective storage bags 14. When the injection is stopped, the pressure in the fluid entrance part 15 decreases, and valve films 17, 18 on the front and back mutually stick together to seal the storage bag. Since the check valve 16 is made of a film, under the unused condition, even the thickest check valve part is slightly thicker than the thickness of the film. Therefore, when stored, the bags do not become bulky, can be piled up or rolled up, and it is convenient for carrying. Also, even when a fluid is packed therein, the storage bags 14 give a flatly connected shape, and they can be stacked up under the fluid packed condition.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a fluid (including powder) storage bag equipped with a check valve and having a plurality of storage bag sections made of synthetic resin films. be.

(Prior art) Conventionally, in this type of flexible synthetic resin film bag, the storage bag section was divided into a plurality of chambers by a seal section by welding two films on the front and back sides to each other. They are generally widely known as mats, life jackets, and food packaging containers.

On the other hand, as check valves to be attached to this type of storage bag, there are known check valves made of synthetic resin injection molded products or commonly called valve sacks made of flat synthetic resin film tubes (for example, 50-2317, Japanese Patent Publication No. 51-34351, and Japanese Patent Publication No. 51-34351).

Furthermore, an air bag in which several compartments are each independently provided with an opening with a stopper is known from Utility Model Publication No. 55-30117.

(Problem to be Solved) However, although the air inlets of the above-mentioned known air pillows, air mats, and life jackets are provided with check valves, and the storage bag portion is divided into multiple rooms, Air is configured to flow between the compartments, so if any compartment is ruptured, all the air will escape, making it completely unusable, and in the case of swim bladders and life jackets, this can be life-threatening.

On the other hand, there are bags for food items that are divided into small sections and are continuous, but each storage bag section is completely independent, and when filling fluid, each storage bag section must be filled with fluid individually. First, filling is troublesome and inefficient, and none of this type of continuous bag is equipped with a check valve.

Also, the aforementioned Utility Model Publication No. 55-30117 has an opening with a stopper, but no check valve, and air must be injected into each air chamber through its own opening. Under certain circumstances, -blanket injection is not possible.

In addition, some relatively large single bags are equipped with a valve sack type check valve, as described in the above patent publications, but in these patent publications, the inside of each bag is As mentioned above, there are no compartments, and when filling a valve sack with fluid, a filling nozzle is always required.
Even if this bubble sack is installed in each compartment, -
Bulk filling is not possible.

Therefore, as mentioned above, even if the fluid storage bag has a plurality of storage bag parts, this invention allows all the storage bag parts to be filled at once from a single point during filling, and after storage, it is possible to fill all the storage bag parts at once. To be able to maintain a sealed state independently and without any influence on other storage bag parts even if some of the fluid inside is taken out or some of the storage bag parts are broken. It is.

Another problem to be solved is to prevent the device from becoming bulky in the form of a sheet when it is not filled with fluid.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a fluid introduction section having a single injection port between the front and back two films, and a plurality of storage units for this fluid introduction section. The bag portions are in parallel, as shown in Table 1 & above.
The seals are formed by welding two films to each other, and the fluid flows only from the fluid introduction part to the storage bag side through the seals that form the boundaries between the fluid source and each storage bag. A flat storage container bag made of a synthetic resin film or sheet is characterized in that it is provided with a check valve that prevents flow in the opposite direction.

Further, in order to solve the above-mentioned problems, the present invention provides each of the check valves as a flat chive by stacking two flexible synthetic resin flat films and heat-sealing both sides. The primary end of one of the films is slightly loosened in the width direction relative to the other film.
A gap is formed between the two films only in this portion, and the other portions are located within the storage bag portion, and the front and back films of the flat tube are in close contact with each other in the storage bag. This storage container bag is characterized in that it is attached to a film at the top.

Further, the injection port may be provided at one end or in the middle of the fluid introduction section.

Further, the fluid introducing portion may be branched.

Further, the storage bag portions may each have an opening that opens directly to the outside and is equipped with a second check valve.

The sheet or film used in this invention may be made of various plastics such as polyethylene, polypropylene resin, nylon, polyester, polyvinyl chloride, rubber, or leather laminated with a backing cloth.

(Function) In the device of this invention having a ridge-like structure, when no fluid is stored, that is, when it is not in use.

It is in a flat state, and fluid (air) enters this storage container bag.

To fill the fluid (gas, liquid, powder or granular material), insert these discharge nozzles into the inlet of the fluid introduction part, apply a slight pressure and inject, and the fluid will first flow into the fluid introduction part, The pressure becomes slightly higher than the atmospheric pressure and the fluid expands, and the fluid is pushed open from the primary side of the check valve opening in each fluid introduction part, and flows into the respective storage bag part.

If enough fluid has been injected into each storage bag.

When the discharge nozzle is removed from the injection port, the pressure inside the fluid introduction section decreases, and each check valve is closed by the same pressure at the time of backflow and the pressure inside the storage bag section.

When taking out the fluid in each storage bag section, either tear any or all of the storage bag sections and take it out, or separate a similar second container that can be opened directly to the outside into each storage bag section in advance.
Install a check valve and insert a straw-shaped pipe into it to remove it.

In the second claim, in addition to the effect of the previous item, in an empty state where no fluid is stored, the thickness is approximately the sum of the thickness of the storage body film and the check valve film, and the fluid is introduced into the fluid introduction part as described above. When injected in the same manner as in the second claim,
In each film check valve, on the next side, that is, on the fluid introduction side, one of the films relaxes and the two films of the check valve are pushed open from the gap created. It flows into each storage bag section.

When the injection nozzle is removed, the flat tube portions constituting each check valve in each storage bag portion are flattened by dynamic pressure and internal pressure during backflow, and are tightly closed.

(Effects) In the unused product of this invention, the films on the front and back of the storage container bag are flat and in close contact with each other, making it easy to store, distribute, and carry around without adding bulk to the life jacket. Ideal as an air pillow, air mat. Furthermore, when used as an air backing, the storage container bag can be inserted or sandwiched into a gap that requires backing before being filled with air, and then the air can be filled.

In Claims 1 and 2 of this application as shown in the above, when fluid is injected from a single injection port from the fluid introduction part side, each check valve is operated as the pressure inside the fluid introduction part increases. ,
Both check valves are pushed open and fluid flows into each storage bag section, filling each storage bag section to the point where they are all at the same pressure.

Next, once the fluid is filled into each storage bag, the fluid in each storage bag is prevented from flowing backwards by the independently provided check valves, and the fluid is kept in a sealed state.

Therefore, even if any one of the storage bag parts is opened, it will not affect the sealed state of the other storage bag parts, and the sealed state will be maintained. Even if some of the storage bag parts break, the buoyancy of the remaining storage bag parts is maintained, increasing safety.

In addition, for other liquid pastes and powder packages, opening any storage bag section will not affect the other bag sections, and these unopened storage bag sections will The sealed packaging state is maintained, and the fluid inside each storage bag can be used as a unit.

In the invention of claim 2, the thickest part of the unused product of this invention is the part where each of the check valves is located, but since the structure of each check valve is as described above, the non-return In addition to the thickness of the two films that make up the stop valve, the sum of the slightly loosened wrinkles and the two films of the outer storage bag makes it possible to create a conventional valve sack type non-return check. This claim 2 is extremely thin with almost the same thickness as a bag with a valve, and does not take up bulk during the storage or product distribution process, and is in an unused flat state even when used as air packing.
Items can be easily inserted or sandwiched into gaps that require backing.

Also, in the second aspect of the present invention, even if a fluid injection nozzle is not inserted into each check valve, each check valve is opened due to the pressure difference between the fluid introduction part and each storage bag, and each storage bag is opened. The fluid can be injected into each storage bag part from a single injection port at once regardless of the number of storage bag parts, and the effort for injection is simplified.

According to the third aspect of the present invention, the fluid introducing portion is formed in a straight line, so that there is little resistance during injection of the fluid, and the injection can be performed in a short time.

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

In the bag according to claim 5, each storage bag is provided with an opening with a second check valve that opens directly to the outside, and a straw-shaped pipe can be inserted into the opening to allow arbitrary storage. A required amount of fluid can be taken out from the bag, and each storage bag can be used multiple times.

The storage container bag of the present invention having the above-mentioned structure, operation, and effects is suitable for air bladders, life jackets, air mats, packing backings, and other air bag-type umbrellas when the object stored inside is air. In liquid form, it can be used to fill seasonings, drinking water, and other liquids; in powder form, it can be used to fill sugar, salt,
Suitable for filling flour, fertilizer, powdered detergent, etc.

It is also suitable for packaging small granules, grains, etc.

(Embodiments) The present invention will now be described based on representative embodiments shown in the drawings.

Example 1 In the figure shown in FIGS. 1 to 5, A is a storage container bag of the present invention, which is generally made of two synthetic resin sheets,
Alternatively, it is made of a sheet or thin film 11, 12 with a lining cloth pasted to it, and these are mutually sealed by heat sealing, high frequency welding, etc. into several independent storage bag parts 14, 14, etc. ... and a single fluid introduction part 15, the fluid introduction part 15 is a narrow passage, and each storage bag part 14, 14...
. . are formed symmetrically in parallel and adjacent to the fluid introduction portion 15 on both sides.

Among the seal portions 13, each storage bag portion 14, 14...
. . . and a seal portion 13a forming a boundary between the fluid introduction portion 15 and
One check valve 16, 16, . . . is provided for each storage bag portion 14, 14, .

The specific structure of the check valves 16, 16, . . . is as shown in FIG. On the other hand, at the -next side end 20, the films 17 and 18 are sealed by the valve seal parts 19 on both side edges by slightly loosening in the width direction, and only at the -next side end 20, the two films 17 and 18 are sealed. A gap 22 is formed between them, and two films 17 are formed near the secondary side 21.
and 18 are formed so that they can be brought into close contact with each other, and these check valves 16, 16, . The secondary side 21 is made to protrude slightly, and most of the secondary side 21 is located in the storage bag part 14, and as shown in FIGS. 3 to 5, one film 17 is longer than the other film 18. These are formed so that they are in a close contact state (see FIG. 5) and a separated state (see FIG. 4).

Only one end of the fluid introducing portion 15 described above is an inlet 23 that is open to the outside air.

Embodiment 2 This is shown in FIG. 6, and the first point is that each storage bag section 14 is provided in parallel on one side of the fluid introduction section 15, and the inlet 23 is provided at an intermediate position of the fluid introduction section 15. In contrast to Embodiment 1, the same reference numerals as in Embodiment 1 indicate each component having the same configuration.

Embodiment 3 The same reference numerals as in Embodiment 1.2 indicate the same components.

The difference is that the fluid introduction path 15 is bifurcated (see FIG. 7).

Embodiment 4 This is shown in FIG. 8, where the same reference numerals as in Embodiment 1 indicate the same components.

The difference is that each storage bag unit 4 is provided with an opening 25 with a second check valve 24 that opens directly to the outside.

Embodiment 5 This embodiment is shown in FIG. 9, and the structure of the check valve 16 is completely different from that of the other embodiments. It is not entirely made of film, but is made of a flexible film-like synthetic resin tube 31 airtightly connected to an elastic injection- or extrusion-molded pipe 30 with a perfect circular or elliptical cross section (see Fig. 10). The pipe 30 is the primary end 20.

The rest is the same as the other embodiments.

In each of the embodiments, when a fluid made of small granules or grains is contained, it goes without saying that each storage/draining section 14 is provided with a degassing gap where only the air can be degassed without spilling these small fluids. be.

(Operations and effects of the embodiments) It goes without saying that all the embodiments have the same operations and effects as those of the present invention, but in the embodiment 1, the fluid injected into the fluid introduction part 15 The fluid is supplied to the primary end 20 of each check valve 16 arranged on the left and right sides of this fluid introduction part 15.
This check valve 16 acts as an internal pressure in the small gap 22 of
are pushed open wide as shown in FIG. 4, and flow into each storage bag portion 14. When the injection is stopped, the fluid introduction part 1
The pressure in 5 decreases, and the valve film on the front and back 17.18
are in close contact with each other and each is completely sealed.

In Examples 1 to 4, each check valve 16
As mentioned above, since it is made of film, even the thickest part of the check valve when unused, increases in thickness by a very small amount compared to the thickness of all the films or sheets, so when stored, They can be stacked without taking up much space or rolled up for storage, and are convenient to carry.

Also, when filled with fluid, the storage bag portion 1 as a whole
4 has a planar shape, so it is possible to stack them while filling them with fluid.

In Examples 2 and 3, the fluid introduction section 14 is connected to the inlet 2.
3 branches into 2 hands, so the device storage bag part 1
The passage size consisting of up to 4 fluid introduction parts 15 is short, pressure loss during injection is small, and there is no need to increase injection pressure.

In the fourth embodiment, since each storage bag part 14 has an opening 25 with a second check valve 24 that opens directly to the outside, it is not necessary to break each storage bag part 14. A necessary amount of fluid can also be taken out from the storage bag portion 14. Also, this embodiment can be used several times.

In the fifth embodiment, an extruded or injection molded pipe 30 is used as the structure of the check valve 16, so the check valve 1
6 is easily opened by the internal pressure of the fluid introduction part, but it is undeniable that the thickness increases when it is not in use.

4. Brief description of the drawings The drawings show an embodiment according to the present invention. Fig. 1 is a plan view of Embodiment 1, Fig. 2 is a perspective view of the check valve, and Fig. 3 is an unused one. A partially omitted side view taken along the line 3-3, FIG. 4 is a longitudinal side view of the portion shown in FIG. 3 when fluid is injected, and FIG. 5 is a longitudinal side view of the portion shown in FIG. 3 after fluid injection. , FIG. 6 is a plan view of the second embodiment, FIG. 7 is a plan view of the second embodiment, and FIG.
The figure is a plan view of Embodiment 3, FIG. 8 is a plan view of Embodiment 4, FIG. 9 is a partially omitted longitudinal side view of Embodiment 5, and FIG. 10 is a reverse view of the storage container bag shown in FIG. 9. It is a perspective view of a stop valve.

Upper symbol A in the figure...Storage container bag body, 13...
...Seal part, 14...Storage bag part, 1
5...Fluid introduction part, 16...Check valve.

No. q Iris

Claims (1)

[Claims] 1) A fluid introduction section having a single injection port between the front and back two films, and a plurality of storage bag sections arranged in parallel to the fluid introduction section, and the front and back two films are connected to each other in parallel. The seals are defined by mutually welded seals, and in the seals that form the boundaries between the fluid introduction section and each storage bag, fluid flows only from the fluid introduction section toward the storage bag, and in the opposite direction. A flat storage container bag made of a synthetic resin film or sheet, characterized in that one check valve to prevent flow is provided for each storage bag portion. 2) Each of the above check valves is made of two flexible synthetic resin flat films stacked together and heat-sealed on both sides to form a flat tube. The film on the side is slightly loosened in the width direction so that a gap is formed between the two films only in this part, and the other parts are located in the storage bag part, and the flat tube is 2. The storage container bag according to claim 1, wherein the front and back films are attached to the film of the storage bag portion in substantially close contact with each other. 3) The storage container bag according to claim 1, wherein the inlet is provided at one of one end and intermediate position of the fluid introduction section. 4) The storage container bag according to claim 1, wherein the fluid introduction portion is branched. 5) The storage container bag according to claim 1, wherein each of the storage bag portions has an opening that opens directly to the outside and is equipped with a second check valve.