JP6628377B1 - Gas replacement type storage bag - Google Patents

Abstract

An object of the present invention is to provide a novel gas-displacement type storage bag suitable for storing, in particular, powdery or granular foods and other articles without contact with air, such as storage bags made of plastic film. And A packaging material made of a soft material having an inlet for contents that can be sealed, a vacuum suction nozzle with a built-in check valve attached to an appropriate position of the packaging material, And a gas replacement nozzle with a built-in check valve attached to the position, and a vacuum suction pump prepared separately is connected to the vacuum suction nozzle, and the vacuum suction pump is operated to discharge the air in the packaging material. A gas replacement type storage bag, characterized in that a separately prepared gas replacement pump is connected to a gas replacement nozzle, and the gas replacement pump is operated to allow the packing material to be appropriately filled with gas. . [Selection diagram] FIG.

Description

The present invention is a gas replacement type storage bag that can replace air in a storage bag made of, for example, a plastic film for storing foods and the like with an inert gas or the like so that the foods and the like do not deteriorate. It is suitable for storing powdered or granular foods and other articles without oxidation.

Conventionally, a gas filling device for gas replacement that replaces air in a plastic film storage bag containing food with an inert gas or the like so as not to oxidize powdered or granular food or other articles. Have been proposed.
However, such gas filling devices for gas replacement are all very large, and require a great deal of cost to perform gas replacement, so that air in a plastic film storage bag can be easily removed anywhere. Gas replacement was not possible.

For example, Japanese Patent Application Laid-Open No. 2006-347569 (refer to Patent Document 1) discloses a method of manufacturing a product in a container in which a liquefied gas is further filled in a container filled with the contents of a granular material and then the container is sealed. In the method, after filling the container with the granular material to be the contents, and then filling the container with the liquefied gas, the liquefied gas is caused to flow along the inner surface of the body of the container, thereby allowing the liquefied gas to flow into the container. There has been proposed a method for producing a product in a container containing a granular material, which is characterized in that the product reaches the vicinity of the bottom.

JP 2006-347569 A

However, any of the techniques merely replaces air contained in the powder or granular material, and does not oxidize the powder or granular food or other articles. However, there is a problem that the contents in the storage bag are oxidized or deteriorated during long-term storage.

The present invention has been devised to solve this problem, and is particularly suitable for storing food or other articles in the form of powder or granules, such as plastic film storage bags, without contact with air. It is another object of the present invention to provide a novel gas replacement type storage bag.

That is, the gas displacement type storage bag of the present invention is:
A packaging material made of a soft material having an inlet for a sealable content, a vacuum suction nozzle with a built-in check valve attached to an appropriate position of the packaging material, and attached to another position of the packaging material A gas replacement nozzle with a built-in check valve,
The vacuum suction nozzle with the built-in check valve is welded through a connecting member made of a tubular film housed in the packaging material, and has a deaeration port for mounting a tube of a vacuum suction pump at an upper end thereof. A check valve housing, a check valve disposed in the housing with a valve port facing the deaeration port side, and a filter member connected to an opening of the check valve by an extension tube. ,
When a separately prepared vacuum suction pump is connected to the vacuum suction nozzle and the vacuum suction pump is operated to discharge the air in the packaging material, the check valve prevents external air from flowing back into the packaging material. In a gas replacement type storage bag, a separately prepared gas replacement pump is connected to the gas replacement nozzle, and the gas replacement pump is actuated so that the packing material can be appropriately filled with gas.
The gas replacement nozzle incorporating the check valve was welded via a connecting member made of a tubular film housed in the packaging material, and was provided with an air inlet for mounting a tube of a gas replacement pump at the upper end. A housing for a check valve, a cylindrical core mounted in the housing, a cylindrical core provided with ventilation holes on both sides of the partition, and a cylindrical core arranged along an outer periphery of the cylindrical core. The gas replacement pump is provided with a check valve made of an elastic tube whose both ends are fixed with a binding band, and a separately prepared gas replacement pump is connected to the gas replacement nozzle to operate the gas replacement pump. A gas passing through one of the vents provided in the cylindrical core, between the cylindrical core and the elastic tube, and the other vent through the other vent, so that the gas can be appropriately filled into the packaging material. It is.

Further, the check valve housing of the gas displacement type storage bag of the present invention has a housing body attached to an appropriate position of the packaging material and an upper end provided with an air inlet for mounting a tube of a gas displacement pump. And a cap, wherein the cylindrical core having the elastic tube disposed along the outer periphery is fitted from above the housing main body, and the cap is attached to the housing main body.

The sealing mechanism of the inlet of the contents of the packaging material made of the soft material of the gas-displacement-type storage bag of the present invention includes an outer fixed frame having a tapered inner surface that narrows downward, and a tapered shape of the outer fixed frame. An elastic sheet disposed on the inner surface of the elastic sheet, a U-shaped pressing frame having a downwardly protruding ridge on both sides disposed along the inner surface of the elastic sheet,
By inserting an insertion port for the contents of the packaging material made of a soft material into the inner surface of the elastic sheet disposed in the outer fixed frame, and pressing the U-shaped pressing frame in a wedge manner from the opening side thereof. The end of the U-shaped pressing frame is engaged with the inner surface of the elastic sheet disposed in the outer fixed frame via the packaging material, so that the charging port for the contents of the packaging material is securely sealed. It is also characterized.

The outer fixed frame of the gas-displacement type storage bag of the present invention is configured such that one end of the U-shaped press frame is rotatably mounted on one end of the outer fixed frame, and the press frame is Is pressed into the inner surface of an elastic sheet disposed in the outer fixed frame via the packaging material.

The gas-displacement type storage bag of the present invention is a packaging material made of a soft material provided with an inlet for a sealable content, a vacuum suction nozzle having a built-in check valve, and a gas replacement having a built-in check valve. Attach a nozzle and connect a separately prepared vacuum suction pump to the vacuum suction nozzle to discharge the air in the packaging material, and connect a separately prepared gas replacement pump to the gas replacement nozzle to connect the The inside is filled with gas as appropriate.
Therefore, the air contained in the powdery or granular material can be completely gas-replaced, and the powdery or granular food or other articles are not almost completely oxidized or deteriorated. This makes it possible to provide a storage bag that can withstand long-term storage.

Further, the gas displacement type storage bag of the present invention employs a vacuum suction nozzle incorporating the check valve, and a vacuum suction pump tube is attached to a deaeration port of a check valve housing. When the air in the packaging material is discharged by operating, the check valve prevents the outside air from flowing back into the packaging material. Therefore, gas replacement can be performed with substantially no air remaining, and a gas replacement type storage bag having a very high gas replacement effect can be provided.

The gas replacement type storage bag of the present invention employs a gas replacement nozzle having a built-in check valve, and the check valve has a middle partition, and ventilation holes are provided on both sides of the middle partition, respectively. A cylindrical core, disposed along the outer periphery of the cylindrical core, comprising an elastic tube fixed at both ends thereof with a binding band,
When the gas replacement pump is operated by connecting a separately prepared gas replacement pump to the gas replacement nozzle, the gas replacement pump passes through the space between the cylindrical core and the elastic tube from one of the vents provided in the cylindrical core. The gas can be easily filled into the wrapping material through the other vent.
On the other hand, even if the gas filling is interrupted or stopped, the gas does not flow backward from the storage bag because the elastic tube closes the ventilation hole of the cylindrical core.

The gas-displacement type storage bag of the present invention is characterized in that the sealing mechanism for the charging port for the contents of the packaging material made of the soft material has an outer fixed frame having a tapered inner surface that narrows downward, and a taper of the outer fixed frame. An elastic sheet disposed on the inner surface of the shape, and a pressing frame having protrusions on both sides, disposed along the inner surface of the elastic sheet,
The insertion of the contents of the packaging material made of a soft material is interposed on the inner surface of the elastic sheet disposed in the outer fixed frame, and the pressing frame is pressed in from the opening side thereof in a wedge manner, thereby forming the U-shape. The end portion of the holding frame is engaged with the inner surface of the elastic sheet disposed in the outer fixed frame via the packaging material so as to securely seal the inlet for the contents of the packaging material.
Therefore, the opening of the contents of the packaging material made of a soft material can be widened, and the contents can be easily stored or taken out.In addition, the contents can be easily sealed and sealed very easily. It is now possible to maintain a high state.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic perspective view of the state which shows one Example of the gas replacement type storage bag of this invention, and is going to store contents. It is a schematic perspective view of the state which is going to close the slot of a storage bag. FIG. 3 is a schematic perspective view of a state in which a vacuum suction pump is to be attached to a vacuum suction nozzle. FIG. 3 is a schematic perspective view of a state in which a vacuum suction pump is attached to a vacuum suction nozzle and the air is to be degassed. It is an outline perspective view of a storage bag in the state where deaeration was completed. FIG. 3 is a schematic perspective view of a state in which a gas replacement pump is to be mounted on a gas replacement nozzle. FIG. 2 is a schematic perspective view of a state in which a gas replacement pump is attached to a gas replacement nozzle and gas replacement is to be performed. It is a schematic perspective view of the storage bag in the state where gas replacement was completed. It is an outline perspective view showing other examples of a gas substitution type storage bag of the present invention. It is a disassembled perspective view of each part which shows the vacuum suction nozzle incorporating the check valve. It is an exploded perspective sectional view of each part. FIG. 6 is an exploded perspective cross-sectional view of an initial stage showing an assembling process of each part. It is an exploded perspective view of an intermediate stage. It is an exploded perspective sectional view of an intermediate stage. (A) is a schematic perspective view at the time of completion of assembly, and (b) is a schematic perspective sectional view at the time of completion of assembly. FIG. 3 is a schematic perspective view for explaining a method of attaching a vacuum suction nozzle to a packaging material. It is a disassembled perspective view of each part which shows the gas replacement nozzle incorporating the check valve. It is an exploded perspective sectional view of each part. FIG. 6 is an exploded perspective cross-sectional view of an initial stage showing an assembling process of each part. It is an exploded perspective sectional view of an intermediate stage. It is a schematic perspective sectional view at the time of completion of assembly. FIG. 4 is a schematic cross-sectional view for explaining points at the time of assembly. (A) is a schematic perspective view at the time of completion of assembly, and (b) is a schematic cross-sectional view at the time of completion of assembly. FIG. 3A is a schematic cross-sectional view of a stage in which a gas is to be injected under pressure, and FIG. 2B is a schematic cross-sectional view of a state in which the gas has been sent between a cylindrical core and an elastic tube. (A) is a schematic cross-sectional view of an initial stage in which gas is moving between the cylindrical core and the elastic tube, and (b) is a late stage in which gas is moving between the cylindrical core and the elastic tube. It is a schematic sectional drawing of a stage. (A) is a schematic sectional view of a stage in which gas is about to escape from a vent of a cylindrical core, and (b) is a schematic sectional view of a stage in which gas escapes from a cylindrical core. It is a schematic perspective view for explaining the attachment method of the gas replacement nozzle. It is a schematic perspective view of the holding frame in the bag fastening clip as a sealing mechanism of the slot of the contents used in the present invention. FIG. 4 is an exploded cross-sectional view of an outer fixed frame, a pair of tapered members, the elastic sheet, and a holding frame. It is a schematic perspective view which shows the state which is going to attach a holding frame to both ends of an outer fixed frame, respectively. It is a schematic perspective view in the state where the holding frame was attached. It is a schematic perspective view of the state which is going to attach a holding frame to an outer fixed frame. It is a schematic perspective view at the time of an assembly completion. It is a schematic perspective view in the state where it is going to attach a clip for bag fastening to a slot of a packaging material. It is a schematic perspective view of the state which inserted the input port of the packaging material by the holding frame. It is a schematic perspective view at the time of completion of the attachment of the bag stopper clip to the insertion port of the packaging material. (A) is a schematic cross-sectional view of a state where a holding frame is about to be mounted on an outer fixed frame, and (b) is a schematic cross-sectional view when mounting is completed.

In FIGS. 1 to 8 for explaining the present invention, a gas-replacement type storage bag 11 is provided with a packaging material 12 made of a soft material having an inlet 13 for a sealable content, and an appropriate position of the packaging material 12. A vacuum suction nozzle 14 having a built-in check valve 51 attached thereto, and a gas replacement nozzle 16 having a built-in check valve 17 attached to another position of the packaging material 12.
As shown in FIG. 1, the contents M (a sphere is used in place of a powdery or granular material for convenience of explanation) is supplied from a large input port 13 of the packaging material 12.
In the figure, B is a bottom plate, and C is a case for storing the contents M.

Examples of the packaging material 12 made of a soft material include a film material such as polyvinylidene chloride having a gas barrier property, and a laminated material of a film material and a metal foil.
In any case, the material can be appropriately selected according to the contents, the degree of gas barrier performance required, and the like.

Next, as shown in FIG. 2, a bag stopper clip 81 as a sealing mechanism for the content input port is attached to the large input port 13 of the packaging material 12 and sealed. The details of the bag stopper clip 81 will be described later.
Then, as shown in FIG. 3, a separately prepared vacuum suction pump 31 is connected to the deaeration port 14a of the vacuum suction nozzle 14, and as shown in FIG. The air inside is exhausted. FIG. 5 shows a state in which the air inside the packaging material 12 has been exhausted.

Further, as shown in FIG. 6, a gas replacement pump 32 that can separately supply gas at a high pressure is connected to the gas replacement nozzle 16, and the gas replacement pump 32 is operated as shown in FIG. Then, the gas is appropriately filled in the packaging material 12. FIG. 8 shows a state in which the gas is filled in the packaging material 12 and the gas replacement is completed.

FIG. 9 shows a state in which input ports 13a and 13b are provided on both sides of the packaging material 12a, and clips 81a and 81b for fastening bags are respectively attached to the input ports 13a and 13b. In this example, the contents M are respectively stored in a plurality of storage recesses 12c provided in a holding plate 12b having a slightly smaller area than the packaging material 12a, and are held at predetermined intervals.
Incidentally, in the figure, reference numeral 18 denotes a handle provided above the packaging material 12.

Next, FIGS. 10 to 15 are views for explaining a vacuum suction nozzle 14 having a built-in check valve disposed at an appropriate position of a packaging material 12 made of a soft material. FIG. 10 shows the check valve. FIG. 11 is a perspective view of an exploded state of each part constituting the built-in vacuum suction nozzle 14, and FIG. 11 is a perspective sectional view of an exploded state of each part.
The vacuum suction nozzle 14 having a built-in check valve attached to the packaging material 12 is provided with a housing 41 for a check valve having a degassing port 14a for projecting a tube of a vacuum suction pump 31 at an upper end, and a housing 41 for the check valve. The housing 41 includes a check valve 51 disposed with the valve port 52 facing the deaeration port 14a side, and a filter member 61 connected to the cylindrical end of the housing 41 by an extension tube 62. 63 is a filter case, 64 is a filter housed in the filter case 63, and 66 is an auxiliary tube for connecting the extension tube 62 to a tube mounting portion 65 protruding from the filter case 63.

The housing 41 for the check valve, which is provided with a deaeration port 14a for mounting a tube of a vacuum suction pump at the upper end, is housed in the packaging material 12 by appropriate means. That is, after the housing 41 is fitted into the outer cylinder 43, the lid 44 is attached from above, and the deaeration port 14a is projected from the round hole 45 of the lid 44. 46 is a cap removably attached to the deaeration port 14a, and 47 is a washer interposed between the lower surface of the housing 41 and the upper end of the outer cylinder 43.
Then, the packaging material 12 and the outer cylinder 43 are joined together, for example, by welding between plastic films by heating or using an adhesive.

In the housing 41, a check valve 51 disposed with the valve port 52 facing the deaeration port 14a is held in a first holding cylinder 55 having a larger diameter than the check valve 51, and It is fitted into the upper part in the housing 41.
That is, the check valve 51 is held by engaging an outward flange 53 provided at the cylindrical end with the lower end of the first holding cylinder 55. Reference numeral 54 denotes a cylindrical spacer which is provided inside the check valve 51 to prevent the check valve 51 from being deformed.
On the other hand, an outward step 56 is formed in the lower part of the housing 41, and a second holding cylinder 57 is fitted into the step 56, and an outward flange is formed from the upper part of the second holding cylinder 57. And is connected to the extension tube 62 via a connecting tube 59.

In the housing 41, the check valve 51 disposed with the valve port 52 facing the deaeration port 14a side is an arch-shaped valve port 52 part made of an elastic material such as rubber or resin. And a minus or plus slit is formed as a valve port 52 at the top.

Next, a process of assembling the parts constituting the vacuum suction nozzle 14 having the check valve 15 therein will be described with reference to FIGS.
FIG. 12 shows a process of assembling each of the housing 41 of the check valve 51 and the filter member 61, and the space between the housing 41 of the check valve 51 and the packaging material 12, such as the outer cylinder 43, It is desirable to interpose a fusible connecting member for firmly joining the two.
First, the check valve 51 is fitted upward into the first holding cylinder 55, and a spacer 54 is attached to the check valve 51. On the other hand, a guide cylinder 58 having an outward flange is inserted through the upper part of the second holding cylinder 57, and a connecting cylinder 59 is attached to the lower end thereof.
Further, an extension tube 62 is connected to an upper end of the filter case 63 of the filter member 61.

Next, as shown in FIGS. 13 and 14, a first holding cylinder 55 equipped with a check valve 51 is press-fitted into the housing 41, and the check valve 51 is inserted into the housing 41 together with the first holding cylinder 55. Hold it inside. Then, the second holding cylinder 57 into which the guide cylinder 58 is inserted is fitted into a step 56 provided at a lower part in the housing 41.
Further, the filter 64 is mounted in the filter case 63 of the filter member 61.
In this state, the check valve 51 is connected to the filter member 61 via the connection tube 59, and the check valve housing 41 is fitted into the outer tube 43.
15A and 15B are a perspective view and a perspective sectional view of a completed state, respectively, and FIG. 16 is a schematic perspective view of a state where a vacuum suction nozzle having a built-in check valve is to be inserted into a packaging material.

The air in the packaging material 12 made of a soft material is deaerated using the vacuum suction pump 31 via the check valve 51.
That is, as shown in FIGS. 3 to 5, the tube of the vacuum suction pump 31 is attached to the deaeration port 14a.
Thereafter, when the vacuum suction pump 31 is operated, the air in the packaging material 12 is discharged, but the outside air does not flow back into the packaging material 12 by the check valve 51.

17 to 27 illustrate a gas replacement nozzle 16 having a built-in check valve 17 disposed at an appropriate position of the packaging material 12 made of a soft material. FIG. 17 illustrates the check valve 17. FIG. 18 is a perspective view of the disassembled state of each part constituting the built-in gas replacement nozzle 16, and FIG. 18 is a perspective sectional view of the disassembled state of each part.
The gas replacement nozzle 16 with the built-in check valve 17 is mounted inside the housing 71 for the check valve, which is provided with a gas inlet 72 for mounting the tube of the gas replacement pump 32 at the upper end. , A cylindrical core 73 provided with ventilation holes 75, 75 on both sides of the partition 74, and disposed along the outer periphery of the cylindrical core 73, A check valve 17 comprising an elastic tube 77 fixed by binding bands 76, 76 is incorporated. Reference numeral 78 denotes a hermetic plug attached to the air inlet 72 when not in use.
As a material of the elastic tube 77, a material having an appropriate property can be selected from a rubber-based or resin-based elastic material.

The check valve housing 71 has a housing main body 71a holding the check valve 17 and a cap formed with an air inlet 72 for mounting a tube of the gas displacement pump 32 at an upper end attached via a packing 71c. 71b.
Then, the upper binding band 76 for fixing the elastic tube 77 is engaged with a step 71d having a downwardly inclined surface formed on the inner wall of the housing body 71a.

Next, a process of assembling the parts constituting the gas replacement nozzle 16 incorporating the check valve 17 will be described with reference to FIGS.
First, as shown in FIG. 19, an elastic tube 77 is provided along the outer periphery of a cylindrical core 73, and binding bands 76, 76 are attached to both ends thereof.
Next, as shown in FIG. 20, the check valve 17 is dropped from above the housing main body 71a, and the upper binding band 76 is engaged with a step 71d having an inclined surface of a lower vault formed on the inner wall of the housing main body 71a. And fix it.
Then, as shown in FIG. 21, a cap 71b is attached to the upper end of the housing body 71a.
At this time, as shown in FIG. 22, the upper end of the tubular core 73 is projected above the binding band 76, and the cap 71b is screwed in a state where the binding band 76 is engaged with the step 71d. As shown in FIG. 23, the tubular core 73 slides while being held at the upper portion by the binding band 76, and is held at an appropriate position.

24 to 26 show a state in which a separately prepared gas replacement pump 32 is connected to the gas replacement nozzle 16 and the gas replacement pump 32 is operated.
That is, when the gas replacement pump 32 is operated, the gas reaches the partition 74 from the air inlet 72 as shown in FIG.
When the gas is further sent, as shown in FIG. 24 (b), the gas is sent between the cylindrical core 73 and the elastic tube 77 through one of the ventilation holes 75 provided in the cylindrical core 73 at the gas pressure. .
Further, the fed gas moves through between the tubular core 73 and the elastic tube 77 as shown in FIGS. 25 (a) and 25 (b).
Thereafter, the gas is filled into the packaging material 12 through the other ventilation port 75 as shown in FIGS. 26 (a) and 26 (b).
FIG. 27 is a view for explaining a method of attaching the gas replacement nozzle 16.

FIGS. 28 to 37 show a bag-stopping clip as a mechanism for sealing a content input port used in the present invention.
The bag fastening clip 81 includes a wedge-shaped pressing frame 82 arranged along the inner surface of the elastic sheet 104.
As shown in FIG. 28, the pressing frame 82 having a U-shaped cross section provided with a downward opening in this example has a shaft hole 82 a communicating with a shaft hole 102 a formed at an end of the outer fixed frame 102 at one end thereof. I have.
A cylindrical stopper 82b is fixed to the outer periphery of the other end of the holding frame 82 having a U-shaped cross section.
FIG. 29 shows an exploded state of the outer fixed frame 102, the pair of tapered members 103, the elastic sheet 104, and the pressing frame 82.

FIG. 30 shows a pair of left and right tapered members 103 incorporated into the outer fixed frame 102, and furthermore, the elastic sheet 104 is disposed along the tapered inner surface of the outer fixed frame 102, and both ends of the outer fixed frame 102. 1 shows a state in which the holding frames 83 and 84 are to be mounted respectively.
The holding frame 83 on the side of the shaft hole 102a formed at the end of the outer fixed frame 102 basically includes a U-shaped side wall 83a and a bottom wall 83b fitted outside the end of the outer fixed frame 102, Further, on the wall surface in the length direction, a guide portion 83c is provided so as to fit a portion of the holding frame 82 projecting from the outer fixed frame 102. 83d is a screw hole for fixing to the end of the outer fixed frame 102.

In FIG. 30, the other holding frame 84 also basically has a U-shaped side wall 84a and a bottom wall 84b which are fitted outside the ends of the outer fixed frame 102, and furthermore, a holding frame is provided on the wall surface in the longitudinal direction. A U-shaped retaining portion 84c into which a portion 82 protruding from the outer fixed frame 102 is fitted protrudes.
FIG. 31 shows a state in which holding frames 83 and 84 are attached to both ends of the outer fixed frame 102, respectively, and FIG. 32 shows a state in which a holding frame 82 is about to be mounted on the outer fixed frame 102. Things. 33, the shaft pin 85 is inserted into the shaft hole 102a formed at the end of the outer fixed frame 102 and the shaft hole 82a of the holding frame 82 from the shaft mounting defect 83e provided in the holding frame 83. And wear it on the shaft.

Then, as shown in FIGS. 34 and 37 (a), the sheet-shaped opening of the bag 91 is fitted into the opening 102a of the outer fixed frame 102, and the holding frame 82 is swung from above. Push it. FIG. 35 shows this state, in which a retaining pin 86 is about to be fitted into a through hole 84d provided above the U-shaped retaining portion 84c.
FIGS. 36 and 37 (b) show a state in which the holding frame 82 is pressed into the inner surface of the elastic sheet 104 disposed in the outer fixed frame 102 via the bag 91.
That is, the end of the U-shaped pressing frame 82 engages with the inner surface of the elastic sheet 104 disposed in the outer fixed frame 102 via the bag 91 so that the opening of the bag 91 is securely sealed. Has become.
At this time, the retaining stopper 82b attached to the tip of the holding frame 82 engages with the retaining pin 86 attached to the U-shaped retaining portion 84c, so that the retaining frame 82 can be reliably prevented from being removed. .

As the material of the outer fixing frame, the holding frame, the tapered member, and the like used in the above-described embodiment, a metal such as aluminum or a plastic material such as high-density polyethylene, polypropylene, or ABS resin is preferably used. It can be appropriately determined according to the size of the opening, the purpose of use (contents, etc.), and the like.
The material of the elastic sheet is also appropriately selected from plastic foams such as synthetic rubber, silicon rubber, urethane rubber and the like, and the material of the bag 91, the size of the opening thereof, the purpose of use (contents and others), the holding frame and the blade It can be determined according to the compatibility with the plate and the like.

According to experiments performed by the inventor, grains such as rice and beans, tea leaves and shiitake mushrooms, fresh foods such as seafood and their dried products, flour, etc. are packed in a bag 91 and deaerated by a vacuum suction pump mechanism. After gas filling, cereals such as rice and beans, fresh foods such as tea leaves, shiitake mushrooms, fish and shellfish, dried foods, flour, etc. remain fresh and airtight even after one year or more. The properties were not impaired, and no discoloration or the like was observed in the filler.

As described above, the present invention proposes a novel gas-displacement-type storage bag suitable for storing powdered or granular foods and other articles without contacting the air. It goes without saying that the present invention can be applied to other uses as long as the purpose of the present invention is not changed.

11 storage bag 12 packaging material 12a packaging material 12b holding plate 12c storage recess 13 input ports 13a, 13b input port 14 vacuum suction nozzle 14a deaeration port 15 check valve 16 gas replacement nozzle 17 check valve 18 handle 31 vacuum suction Pump 32 Gas replacement pump 41 Check valve housing 43 Outer cylinder 44 Lid 45 Round hole 46 Cap 47 Washer 51 Check valve 52 Valve port 53 Flange 54 Cylindrical spacer 55 First holding cylinder 56 Step 57 Second Holder 58 Guide tube 59 Connecting tube 61 Filter member 62 Extension tube 63 Filter case 64 Filter 65 Tube mounting part 66 Auxiliary tube 71 Check valve housing 71a Housing body 71b Cap 71c Packing 71d Step 72 Air inlet 73 Tubular Core 74 Partition 75, 75 Vent 76, 76 Binding band 77 Sex tube 78 Seal plug 81 Bag stopper clip 81a, 81b Bag stopper clip 82 Holding frame 82a Shaft hole 82b Stopper stopper 83 Holding frame 83a Side wall 83b Bottom wall 83c Guide part 83d Screw hole 83e Missing part 84 Holding frame 84a Side wall 84b Bottom Wall 84c U-shaped retaining portion 84d Through hole 85 Shaft pin 86 Retaining pin 91 Bag 102 Outer fixed frame 102a Shaft hole 102b Opening 103 Tapered member 104 Elastic sheet M Contents B Bottom plate C Case

Claims (4)

A packaging material made of a soft material having an inlet for a sealable content, a vacuum suction nozzle with a built-in check valve attached to an appropriate position of the packaging material, and attached to another position of the packaging material A gas replacement nozzle with a built-in check valve,
The vacuum suction nozzle with the built-in check valve is welded through a connecting member made of a tubular film housed in the packaging material, and has a deaeration port for mounting a tube of a vacuum suction pump at an upper end thereof. A check valve housing, a check valve disposed in the housing with a valve port facing the deaeration port side, and a filter member connected to an opening of the check valve by an extension tube. ,
When a separately prepared vacuum suction pump is connected to the vacuum suction nozzle and the vacuum suction pump is operated to discharge the air in the packaging material, the check valve prevents external air from flowing back into the packaging material. In a gas replacement type storage bag, a separately prepared gas replacement pump is connected to the gas replacement nozzle, and the gas replacement pump is actuated so that the packing material can be appropriately filled with gas.
The gas replacement nozzle incorporating the check valve was welded via a connecting member made of a tubular film housed in the packaging material, and was provided with an air inlet for mounting a tube of a gas replacement pump at the upper end. A housing for a check valve, a cylindrical core mounted in the housing, a cylindrical core provided with ventilation holes on both sides of the partition, and a cylindrical core arranged along an outer periphery of the cylindrical core. The gas replacement pump is provided with a check valve made of an elastic tube whose both ends are fixed with a binding band, and a separately prepared gas replacement pump is connected to the gas replacement nozzle to operate the gas replacement pump. A gas characterized in that the gas can be appropriately filled in the packaging material from one vent provided in the cylindrical core, between the cylindrical core and the elastic tube, and through the other vent. Replaceable storage bag. The check valve housing includes a housing body attached to an appropriate position of the packaging material, and a cap having an upper end provided with an air inlet for mounting a tube of a gas displacement pump. 2. The gas displacement type storage bag according to claim 1, wherein the cylindrical core arranged in the above manner is fitted over the housing main body so that the cap is attached to the housing main body. The sealing mechanism of the inlet of the contents of the packaging material made of the soft material, an outer fixed frame having a tapered inner surface narrowing downward, and an elastic sheet disposed on the tapered inner surface of the outer fixed frame, A U-shaped pressing frame having a downwardly protruding ridge on both sides, disposed along the inner surface of the elastic sheet,
By inserting an insertion port for the contents of the packaging material made of a soft material into the inner surface of the elastic sheet disposed in the outer fixed frame, and pressing the U-shaped pressing frame in a wedge manner from the opening side thereof. The end of the U-shaped pressing frame is engaged with the inner surface of the elastic sheet disposed in the outer fixed frame via the packaging material, so that the charging port for the contents of the packaging material is securely sealed. The gas-displacement-type storage bag according to claim 1 or 2, wherein: In the outer fixed frame, one end of the U-shaped pressing frame is rotatably mounted on one end of the outer fixing frame, and the pressing frame is fixed to the outside via the packaging material. 4. The gas displacement type storage bag according to claim 3, wherein the storage bag is press-fitted into an inner surface of an elastic sheet disposed in the frame.

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