JP6649987B2 - Vacuum suction structure of the packing material with check valve - Google Patents

Description

According to the present invention, an opening / closing mechanism is provided at a filling port of contents of a deformable packaging material (for example, a soft container), and a check valve is attached to an appropriate position of the packaging material so that air in the packaging material can be quickly discharged. More particularly, the present invention relates to a vacuum suction structure for a packing material with a check valve.

The inventor has previously disclosed in Japanese Patent No. 5633063 (see Patent Document 1) a packaging material made of a plastic film and a tubular film-made outer material which is welded to an opening of the packaging material and stored in the packaging material. A cylinder, a housing for a check valve which is provided in the outer cylinder and has a vent for projecting a vacuum pump tube at an upper end thereof, and a valve in the housing facing the vent. A check valve provided, and a filter member connected to an opening of the check valve by an extension tube, and a separately prepared vacuum pump tube is attached to a deaeration port of a housing in the outer cylinder, There has been proposed a packaging material with a check valve in which when the air in the packaging material is discharged by operating a vacuum pump, the outside air does not flow back into the packaging material by the check valve.

On the other hand, in Japanese Patent No. 5468174 (see Patent Document 2), an outer fixed frame having a tapered V-shaped inner surface that narrows downward and a tapered V-shaped inner surface of the outer fixed frame are arranged. An elastic sheet, comprising a wedge-shaped holding frame that is disposed along the surface of the elastic sheet and has a cross section formed with a ridge at an intermediate position in the width direction along the length direction on the surface on the elastic sheet side, By interposing an opening of a bag made of a soft sheet on the inner surface of the elastic sheet disposed in the outer fixed frame, and further pressing the holding frame in a wedge shape, the ridges of the holding frame are elastically deformed through the bag. A bag-stopping clip that engages with a sheet and securely seals the opening of the bag is proposed.

As a mechanism for opening / closing a filling port of a packaging material with a check valve disclosed in Japanese Patent No. 5633063 (see Patent Document 1), a bag stopper clip disclosed in Japanese Patent No. 5468174 (see Patent Document 2) is employed. We provide packaging materials to the market.

Japanese Patent No. 5633063 Japanese Patent No. 5468174

However, the contents are filled in a plastic film packaging material by combining Japanese Patent No. 5633063 (see Patent Document 1) and Japanese Patent No. 5468174 (see Patent Document 2), and the contents are removed by vacuum suction. If the contents are powdery or granular, particularly when the content is powdery, there is a problem that the powdery materials are densely packed, the air permeability is reduced, and degassing becomes difficult. .

Therefore, an object of the present invention is to provide a vacuum suction structure for a check valve-equipped packaging material that can be completely degassed to the end even if the contents are powdery or granular, especially powdery. It is intended to provide.

That is, the vacuum suction structure of the check valve-equipped packaging material according to the present invention has a breathable bag for storing a content made of a powdery substance or a granular substance, and a communicating bubble built in the content stored in the breathable bag. And a breathable spacer made of foam,
While storing the breathable bag incorporating the spacer in a film-like or sheet-like packaging material,
The inside of the packaging material is vacuum-evacuated to remove air contained in the contents through a breathable bag.

The vacuum suction structure of the packaging material with a check valve according to the present invention has a breathable bag for storing contents made of a powdery substance or a granular substance, and a longitudinally extending outer periphery built in the contents stored in the breathable bag. A spacer comprising a rod-shaped or plate-shaped body having a plurality of concave grooves along the direction,
While storing the breathable bag incorporating the spacer in a film-like or sheet-like packaging material,
The invention is also characterized in that the inside of the packaging material is vacuum-evacuated and the air contained in the contents is degassed through a breathable bag.
The film-shaped or sheet-shaped packaging material includes not only a plastic film packaging material but also a paper packaging material, an aluminum foil packaging material, and a composite material packaging material.

In the vacuum suction structure of the packaging material with a check valve according to the present invention, the breathable bag for storing the contents is made of a nonwoven fabric.

According to the vacuum suction structure of the packaging material with the check valve according to claim 1, the air permeable bag can deaerate from the entire area of the air permeable bag, and can be built into the contents stored in the air permeable bag. With the spacer thus set, the contents can be completely degassed from the inside to the end.
In particular, since the air is evacuated from the whole area in the air permeable bag by the air permeable bag and from the inside of the content by the spacer incorporated in the content stored in the air permeable bag , the vacuum suction is performed very quickly and without difficulty. Now you can do it.

According to the vacuum suction structure of the packing material with the check valve of claim 3, the breathable bag is made of a nonwoven fabric, and the vacuum suction structure of the packing material with the check valve is provided at a very low cost. Can be.

According to the vacuum suction structure of the packaging material with the check valve of the first aspect, the spacer is formed of a foam of communicating cells, and can be easily deaerated from the contents.

According to the vacuum suction structure of the packaging material with the check valve according to claim 2, the spacer is formed of a rod-shaped body or a plate-shaped body having a plurality of concave grooves on the outer periphery along the longitudinal direction , and the contents It can be easily degassed from inside.
Further, as compared with the case where the spacer is a foam of open cells, the content does not enter into the foam of open cells, so that it is less troublesome to take out and use the contents.

1A and 1B show a breathable bag constituting a vacuum suction structure of a packaging material with a check valve of the present invention and a spacer incorporated therein, wherein (a) is a foam of communicating cells as a spacer, and (b) is an outer periphery as a spacer. FIG. 2 is a schematic perspective view when a rod-shaped body (or plate-shaped body) having a plurality of concave grooves along the longitudinal direction is used. (A), (b) is a schematic sectional drawing which respectively shows a breathable bag and the spacer built in it. FIG. 3 is a schematic perspective view showing a state in which a gas-permeable bag and a spacer incorporated therein are accommodated in a film-like or sheet-like packaging material, and a filling port of the film-like or sheet-like packaging material is opened to fill contents. It is a schematic perspective view which shows the state which is going to close the filling port of a film-shaped or sheet-shaped packaging material with the clip for bag closure. FIG. 4 is a schematic perspective view of a state in which a filling port is closed by a bag stopper clip and is about to be degassed by a vacuum pump. FIG. 4 is a schematic perspective view of a state in which a filling port is closed with a bag stopper clip and a vacuum pump is attached to the degassing port in order to degas the inside of the packaging material. FIG. 3 is a schematic perspective view of a state in which a vacuum pump is used to deaerate the inside of the packaging material. It is a schematic perspective view in the state where the inside of a wrapping material was vacuum-evacuated and the inside of a breathable bag was evacuated. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic sectional drawing of the state before connection explaining one Example of the clip for bag stopper which concerns on this invention. It is a schematic sectional drawing of a coupling state. It is a schematic perspective view of the disassembled state. It is a schematic perspective view of the state which attaches the filling opening of a packaging material to the outer fixed frame of the bag fixing clip. FIG. 4 is a schematic perspective view of a state in which a filling port of a packaging material is attached to the outer fixed frame and a holding frame is pushed in. FIG. 4 is a schematic perspective view of a state where a holding frame is pushed into the outer fixed frame. It is a schematic sectional drawing of the state which is trying to prevent the deformation | transformation of the said holding frame by the U-shaped intermediate | middle stopper which was inserted between the said holding frame and the outer surface of the said outer fixed frame. It is a schematic sectional drawing of the state which inserted the U-shaped intermediate | middle stopper metal between the said holding frame and the outer surface of the said outer fixed frame. FIG. 4 is a schematic perspective view of a state in which deformation of the holding frame is to be prevented by a U-shaped intermediate stopper that is inserted between the holding frame and an outer surface of the outer fixed frame. FIG. 4 is a schematic perspective view of a state in which a U-shaped intermediate stopper is inserted between the holding frame and an outer surface of the outer fixed frame. It is a perspective view of the disassembled state of each part which comprises the holding member of the check valve of the packaging material with a check valve. It is a perspective sectional view of the disassembled state of each part. It is a perspective sectional view showing progress of assembling each of a housing of a check valve, and a filter member. It is a perspective view which shows the state which each of the housing of the check valve and the filter member were assembled. It is a perspective sectional view showing the state where each of the housing and the filter member of the check valve was assembled. 2A and 2B show a state in which a housing of a check valve and a filter member are connected, respectively, wherein FIG. 2A is a perspective view and FIG. It is a schematic front view of the state where it is going to insert the holding member of the check valve into the packaging material.

Hereinafter, an embodiment of a vacuum suction structure of a packaging material with a check valve of the present invention will be described in detail with reference to the drawings.
FIGS. 1 and 2 show an embodiment of a vacuum suction structure of a packaging material with a check valve according to the present invention, and show a spacer 12 incorporated in the contents housed in a breathable bag 11 constituting the vacuum suction structure. , and the FIG. 1 (a), FIG. 2 (a) foam 12a of open cells as the spacer 12, FIG. 1 (b), the FIG. 2 (b) of the plurality in the longitudinal direction on the outer periphery as a spacer 12 This shows a case where a rod-shaped body (or plate-shaped body) 12b having a concave groove 12c is used.
1 (b) and 2 (b) illustrate a case where two rod-shaped spacers 12b are used, but they are communicated as the spacers 12 in FIGS. 1 (a) and 2 (a). Needless to say, a plurality of foam cells 12a may be used.

According to the above configuration, the entire area inside the air permeable bag 11 can be degassed by the air permeable bag 11, and the contents 13 can be evacuated by the spacer 12 incorporated in the contents stored in the air permeable bag 11. It can be completely degassed from to the end.
In particular, since the air is evacuated from the entire area in the air permeable bag 11 by the air permeable bag 11 and from the inside of the contents 13 by the spacer 12 built in the air permeable bag 11, vacuum suction can be performed very quickly and without difficulty. Is now available.
Further, since the breathable bag 11 is made of a nonwoven fabric, it is possible to provide a vacuum suction structure of a packaging material with a check valve at a very low cost.
By the way, most materials that can be processed into fibers can be used as the raw material of the nonwoven fabric. Further, by combining a plurality of raw materials or adjusting the shape such as the fiber length and thickness, it is possible to provide a function according to the purpose and application.

And when the foam 12a of the open cell is used as the spacer 12, the whole area within the contents 13 can be easily degassed.
In the case where a rod-shaped body (or plate-shaped body) 12b having a plurality of concave grooves 12c along the longitudinal direction on the outer periphery is used as the spacer 12, the air is easily degassed from the entire length of the contents 13. Now you can do it.
At this time, since the contents 13 do not enter into the foam 12a of the communicating cells as compared with the case where the spacer 12 is the foam 12a of the communicating cells, the contents 13 are not used when the contents 13 are taken out and used. The labor for separating the object 13 from the open-cell foam 12a is reduced.

FIGS. 3 to 8 show an embodiment in which the vacuum suction structure of the packing material with a check valve according to the present invention is applied to a film-like or sheet-like packing material.
Incidentally, the film-shaped or sheet-shaped packaging material includes not only a plastic film packaging material but also a paper packaging material, an aluminum foil packaging material, and a composite material packaging material.
First, as shown in FIG. 3, a breathable bag 11 containing a spacer 12 is housed in a film-like or sheet-like packaging material 14, and the contents 13 are put into the breathable bag 11.
Next, as shown in FIG. 4, a separately prepared bag stopper clip 21 is attached to the filling port 14a of the film or sheet packaging material 14 as shown in FIG.
Thereafter, as shown in FIG. 6, a vacuum pump 15 is attached to a deaeration port 42 of a holding member 40 of a check valve, which will be described later, in order to deaerate the inside of the packaging material 14, and as shown in FIG. The interior of 14 is evacuated by suction with a vacuum pump.
FIG. 8 shows a state in which the inside of the packaging material 14 is vacuum-evacuated and the inside of the air permeable bag 11 is evacuated.

As shown in FIGS. 9 to 11, the bag stopper clip 21 includes an outer fixed frame 22 having a tapered V-shaped inner surface that narrows downward.
An elastic sheet 23 is disposed on the tapered V-shaped inner surface of the outer fixed frame 22. It is preferable that the elastic sheet 23 has a certain thickness, has an appropriate repulsive force, and is in close contact with a rib 24c described later.
Further, the bag stopper clip 21 is provided with a pressing frame 24 having a wedge-shaped cross section disposed along the surface of the elastic sheet 23. The pressing frame 24 is located at an intermediate position in the width direction and has a length corresponding to the length thereof. A rib 24c is formed along the direction.

The holding frame 24 having a wedge-shaped cross section is tapered so as to gradually increase in thickness from a thin portion 24a at the tip, and flanges 24e project along both sides of the thick portion 24b in the longitudinal direction. Has been established.
Due to the formation of the flange 24e, the pressing frame 24, which tends to be generated when the pressing frame 24 is pressed in a wedge shape between a pair of elastic sheets 23 arranged along the inner surface of the outer fixed frame 22, is positioned at a central portion. This solves the problem of deforming so as to bulge rearward, and the basic function of closing the opening of the bag can be reliably achieved.

12 to 14 are perspective views showing the state of use.
First, as shown in FIG. 12, an elastic sheet 23 is arranged in advance along the tapered inner surface of the outer fixed frame 22, and the film-like or sheet-like packing material 14 is filled on the inner surface of the elastic sheet 23. Fit 14a. Reference numeral 24c denotes a rib provided on the holding frame 24.
By pressing the holding frame 24 between the elastic sheets 23 in a wedge shape as shown in FIG. 13, the holding frame 24 is securely stored in the outer fixed frame 22 as shown in FIG. .
At this time, the ribs 24c of the holding frame 24 are engaged with the elastic sheet 23 via the packaging material 14, and the filling port 14a of the packaging material 14 is securely sealed.

By operating in this manner, as shown in FIG. 14, the rib 24 c formed at the intermediate position in the width direction along the longitudinal direction on the surface of the holding frame 24 on the elastic sheet 23 side, via the packaging material 14. Engaging with the elastic sheet 23, the filling port 14a of the packaging material 14 is securely sealed.
It is desirable that the rib 24c formed on the surface of the pressing frame 24 on the elastic sheet 23 side in the longitudinal direction at an intermediate position in the width direction has a V-shaped cross section. The angle and size of the V-shape, whether the rib 24c is continuous or discontinuous, and the like can be appropriately determined in consideration of the size, purpose of use, and the like.

As shown in FIGS. 12 to 18, the outer fixing frame 22 has one end thereof to which the holding frame 24 is rotatably mounted via a shaft screw 26. At one end of the outer fixed frame 22, by the way, at the other end in the drawing, a mounting hole 27 for a locking pin is provided, and a communication hole 28 provided at the tip of the holding frame 24 is connected to the mounting hole 27. The presser frame 24 is pushed into the outer fixed frame 22 so as to come to a position that matches Then, the retaining pin 29 is fitted into the mounting hole 27 and the communication hole 28 so that the holding frame 24 is securely held in the outer fixed frame 22.
At this time, since the holding frame 24 is formed with a flange 24e, the holding frame 24, which is likely to be generated when the holding frame 24 is pressed in a wedge shape between the outer fixed frames 22, moves rearward at a central portion. The problem of deformation to expand does not occur.

As shown in FIGS. 15 to 18, the pressing frame 24 is deformed by a U-shaped intermediate stopper 31 inserted between the pressing frame 24 and the outer surface of the outer fixing frame 22 at an appropriate position in the longitudinal direction. Can be prevented.
That is, a hole 31a for a metal fitting is provided at an appropriate position of the thin rear end 24d at the upper end of the wedge-shaped holding frame 24, and is displaced from the tapered V-shaped inner surface of the outer fixed frame 22, for example, a pair of left and right downwards. A hole 31b is provided in a portion of the flange 22a corresponding to the hole 31a in the longitudinal direction . Then, the U-shaped intermediate stopper 31 is pushed into the holes 31 a and 31 b at the horizontal portions on both ends thereof, so that the holding frame 24 is securely held in the outer fixed frame 22.
Of course, the U-shaped intermediate stopper 31 and the flange 24e of the holding frame 24 may be combined.

As a material of the outer fixed frame and the holding frame used in each of the above embodiments, 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 filling port 14a, the purpose of use (contents and the like), and the like.
Also, the material of the elastic sheet is appropriately selected from plastic foam such as synthetic rubber, silicon rubber, urethane rubber, etc., and the material of the packaging material 14, the size of the filling port 14a, the purpose of use (contents and others), Can be determined according to the compatibility with the above.

Incidentally, the bag-stopping clip 21 is used by being attached to the filling port 14a of the packaging material 14 made of a material having improved airtightness, and a check valve is provided at a position different from the filling port 14a of the packaging material 14. By attaching the provided vent plug, powdered food and other articles can be stored without being exposed to air.
In addition, as a vent plug provided with the said check valve, the vacuum pump mechanism of Unexamined-Japanese-Patent No. 2009-190775 and Japanese Patent Application No. 2012-218947 which the inventor proposed can be employ | adopted.
Then, the packaging material 14 is filled with powdered foods and other articles, the filling port 14a is sealed with the bag fastening clip 21, and then the air in the packaging material 14 is sucked using the vacuum pump mechanism. If degassing is performed, the interior of the packaging material 14 can be maintained in an oxygen-free state for a long period of time.
According to experiments conducted by the present inventors, cereals such as rice and beans, fresh foods such as tea leaves and shiitake mushrooms, dry matter, flour and the like were packed in a packaging material 14 and deaerated by a vacuum pump mechanism. Becomes a hardened state with the filler, remains in the hardened state of the ticks even after one year or more, does not impair airtightness at all, and does not show discoloration etc. in the filler Was.

19 to 25 are views for explaining a holding member of a check valve disposed at an appropriate position of the film-like or sheet-like packaging material 14, and FIG. 19 shows a holding member of the check valve. FIG. 20 is a perspective view of a disassembled state of each constituent part, and FIG. 20 is a perspective sectional view of a disassembled state of each part.
A check valve holding member 40 attached to a film-like or sheet-like packaging material to be described later includes a check valve housing 41 having a degassing opening 42 for mounting a vacuum pump tube at an upper end thereof, and a housing 41 for the check valve. A check valve 51 provided with a valve port 52 facing the deaeration port 42 side therein, and a filter member 61 connected to an end of the check valve 51 at a cylindrical end by an extension tube 62. I have. Reference numeral 63 denotes a filter case, 64 denotes a filter housed in the filter case 63, and 66 denotes an auxiliary tube for connecting the extension tube 62 to a tube mounting portion 65 protruding from the filter case 63.

The check valve housing 41 having a degas port 42 for mounting a vacuum pump tube at the upper end thereof is housed in the packaging material 14 by appropriate means. That is, the packaging material 14 and the outer cylinder 43 are joined by, for example, welding between plastic films by heating or using an adhesive. Then, the housing 41 is fitted into the outer cylinder 43, and a lid 44 is attached from above, so that the deaeration port 42 is projected from the round hole 45 of the lid 44. Reference numeral 46 denotes a cap which is detachably attached to the air vent 42.

The check valve 51 disposed in the housing 41 with the valve port 52 facing the deaeration port 42 side is held in a first holding cylinder 55 having a diameter larger than that of 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 provided with the valve port 52 facing the deaeration port 42 side has a valve port 52 portion formed in an outwardly facing arch shape by an elastic material. A negative or positive slit is formed as a valve port 52 at the top.

Next, a process of assembling the parts constituting the check valve holding member 40 will be described with reference to FIGS.
FIG. 21 shows a process of assembling each of the housing 41 of the check valve 51 and the filter member 61. A space between the housing 41 of the check valve 51 and the packaging material 14, such as the outer cylinder 43, is shown. 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 its lower end.
Further, an extension tube 62 is connected to the upper end of the filter case 63 of the filter member 61.

Next, as shown in FIGS. 22 and 23, a first holding cylinder 55 having a check valve 51 mounted therein is press-fitted into the housing 41, and the check valve 51 and the first holding cylinder 55 are connected to 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 portion 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.
24A and 24B are a perspective view and a perspective sectional view of a completed state, respectively, and FIG. 25 is a schematic front view of a state where a holding member of a check valve is to be inserted into a packaging material.

The air in the film-shaped or sheet-shaped packaging material 14 is degassed by using a vacuum pump via the check valve 51.

Then, as shown in FIGS. 5 to 7, the tube of the vacuum pump 15 is attached to the deaeration port 42 of the housing 41.
Thereafter, when the vacuum pump 15 is operated, the air inside the packaging material 14 is exhausted, but the outside air does not flow back into the packaging material 14 by the check valve 51.

The vacuum suction structure of the packing material with a check valve of the present invention can be used for filling various contents in the packing material, and for filling various contents into the packing material and evacuation. It can be suitably applied as a vacuum suction structure.

DESCRIPTION OF SYMBOLS 11 Breathable bag 12 Spacer 12a Open-cell foam 12b Rod (or plate)
12c Concave groove 13 Contents 14 Film or sheet-like packaging material 14a Filling port 15 Vacuum pump 21 Bag fastening clip 22 Outer fixed frame 22a Flange 23 Elastic sheet 24 Holding frame 24a Thin portion 24b Thick portion 24c Rib 24d Rear end 24e Flange 25 Protrusion 26 Shaft screw 27 Mounting hole 28 for stop pin Communication hole 29 Stop pin 31 Intermediate stop 31a Hole 31b for stop 40 Hole for check 40 Holding member 41 for check valve Housing 42 Deaeration opening 43 Outer cylinder 44 lid 45 round hole 46 cap 47 washer 51 check valve 52 valve opening 53 flange 54 cylindrical spacer 55 first holding cylinder 56 step 57 second holding cylinder 58 guide cylinder 59 connecting cylinder 61 filter member 62 extension tube 63 Filter case 64 Filter 65 Tube mounting part 66 Auxiliary tube

Claims (3)

A breathable bag for storing contents made of powdery or granular materials, and a gas-permeable spacer made of open-cell foam, which is contained in the contents stored in the breathable bag,
While storing the breathable bag incorporating the spacer in a film-like or sheet-like packaging material,
A vacuum suction structure for a packaging material with a check valve, characterized in that the interior of the packaging material is vacuum-evacuated and air contained in the contents is degassed through a breathable bag. A gas-permeable bag for storing contents made of powdery or granular material, and a rod-shaped body or plate provided with a plurality of concave grooves along the longitudinal direction on the outer periphery, built in the contents stored in the gas-permeable bag. And a spacer made of a state body,
While storing the breathable bag incorporating the spacer in a film-like or sheet-like packaging material,
A vacuum suction structure for a packaging material with a check valve, characterized in that the interior of the packaging material is vacuum-evacuated and air contained in the contents is degassed through a breathable bag. The vacuum suction structure for a packaging material with a check valve according to claim 1 or 2, wherein the breathable bag for storing the contents is made of a nonwoven fabric.

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