JP6456008B1 - Opening and closing mechanism for filling port with check valve - Google Patents

Abstract

[PROBLEMS] To provide a check valve that can be easily opened for filling or sealed after filling without the need to use a clip for the bag at the filling port of the packing material with a check valve. A packing opening / closing mechanism for a packaging material is provided. A slit-like opening provided on one side of a film-like or sheet-like packaging material, and a soft plate integrally joined to the upper surface with the slit-like opening interposed therebetween And an adhesive sealing tape that is detachably attached to the slit portion of the soft plate on the upper surface of the slit-like opening.
[Selection] Figure 1

Description

The present invention has an opening / closing mechanism at the filling port for the contents of a deformable packaging material (for example, a soft container), and can attach a check valve at an appropriate position of the packaging material to quickly discharge the air in the packaging material. More specifically, the present invention relates to the structure of the filling port opening / closing mechanism.

The present inventor previously disclosed a packaging material made of plastic film and a tubular film outer package welded to the opening of the packaging material and stored in the packaging material in Japanese Patent No. 5633003 (see Patent Document 1). A cylinder, a housing for a check valve that is provided in the outer cylinder, and has a deaeration port protruding from the upper end of the tube for mounting a vacuum pump tube, and the valve port is arranged facing the deaeration port in the housing. A check valve provided, and a filter member connected to the opening of the check valve by an extension tube, and a separately prepared vacuum pump tube is attached to the deaeration port of the housing in the outer cylinder, When a vacuum pump is operated to discharge the air in the packaging material, a packaging material with a check valve is proposed in which the check valve prevents the outside air from flowing back into the packaging material.

On the other hand, in Japanese Patent No. 5468174 (see Patent Document 2), the outer fixed frame having a tapered V-shaped inner surface narrowing downward and the tapered V-shaped inner surface of the outer fixed frame are arranged. An elastic sheet, and a presser frame having a wedge-shaped cross section, which is disposed along the surface of the elastic sheet, and has a protrusion formed at the intermediate position in the width direction along the length direction on the surface of the elastic sheet, By inserting an opening of a soft sheet bag on the inner surface of the elastic sheet disposed in the outer fixed frame, and further pressing the presser frame into a wedge shape, the protrusions of the presser frame are elasticized via the bag. A bag clip has been proposed which engages with a sheet and securely seals the opening of the bag.

And as a filling port opening / closing mechanism of the packaging material with a check valve of Japanese Patent No. 5633003 (see Patent Document 1), a bag stopper clip in Japanese Patent No. 5468174 (see Patent Document 2) is adopted. We provide packaging materials to the market.

Japanese Patent No. 5633003 Japanese Patent No. 5468174

However, as the filling port opening / closing mechanism of the packaging material with a check valve disclosed in Japanese Patent No. 5633003 (see Patent Document 1), the bag stopper clip in Japanese Patent No. 5468174 (see Patent Document 2) is adopted. When a packaging material with a check valve is provided to the market, it is necessary to seal the filling port of the packaging material with a check valve by assembling a plurality of molded products, and the workability is poor. There has been a problem that a large volume is required when transporting a large number of packaging materials with valves.

Therefore, an object of the present invention is to eliminate the need to use a bag clip for the filling port of the packing material with a check valve, and to easily perform the work of opening for filling or sealing after filling. An object of the present invention is to provide a filling port opening / closing mechanism for a packaging material with a check valve.

That is, the filling port opening / closing mechanism of the packaging material with a check valve according to the present invention includes a slit-like opening provided on one side of a film-like or sheet-like packaging material, and a soft joint integrally joined to the upper surface across the slit-like opening. A plate, a hard plate integrally bonded to a position corresponding to the slit-like opening on the other surface of the film-like or sheet-like packaging material, and a soft plate on the upper surface of the slit-like opening are detachably attached. It is also characterized by comprising an adhesive sealing tape.
The film-like or sheet-like packaging material includes not only plastic film packaging materials but also paper packaging materials, aluminum foil packaging materials, and composite material packaging materials.

In the filling port opening / closing mechanism of the packaging material with a check valve of the present invention, the bonding between the film-shaped or sheet-shaped packaging material and the soft plate, and the bonding between the film-shaped or sheet-shaped packaging material and the hard plate are each made of an adhesive. It is characterized by including joining by joining and fusion.

In the filling port opening and closing mechanism of the packaging material with a check valve according to the present invention, the adhesive sealing tape that is detachably attached to the slit portion of the soft plate on the upper surface of the slit-like opening can be repeatedly attached and peeled off. It is also characterized by being.

According to the filling port opening / closing mechanism for the packaging material with a check valve according to claim 1, the slit-like opening portion of the film-like or sheet-like packaging material is firmly supported by the hard plate to ensure a stable filling operation. In addition, the soft plate bonded to the upper surface of the slit-shaped opening can fill the film-like or sheet-like packaging material without difficulty.
In addition, the adhesive sealing tape that is detachably attached to the slit portion of the soft plate on the upper surface of the slit-like opening can be easily opened and closed.
Furthermore, there is no need to use a clip for bag closure at the filling port of the packing material with a check valve, and when a large number of packing materials with a check valve are to be stacked and transported, a large volume is unnecessary and transported. This is a very significant advantage in costs.

According to the filling port opening / closing mechanism of the packaging material with a check valve according to claim 2 , the joining of the film-like or sheet-like packaging material and the soft plate, the joining of the film-like or sheet-like packaging material and the hard plate, Bonding by adhesive and bonding by fusion can be selected or combined as appropriate, and can be determined as appropriate in consideration of the material and thickness of each material, compatibility with the contents, and the like.

According to the filling port opening / closing mechanism of the packaging material with a check valve according to claim 3 , the adhesive sealing tape removably attached to the slit portion of the soft plate on the upper surface of the slit-like opening can be repeatedly attached and peeled off. Therefore, the opening / closing operation can be performed repeatedly, and the cost can be greatly reduced as compared with the case where the bag fastening clip is employed.

It is a front view of the packaging material provided with the filling port opening and closing mechanism of the packaging material with a check valve of the present invention. It is an expanded sectional view which shows the state before the assembly | attachment of the filling port part of the packaging material with a non-return valve. It is an expanded sectional view which shows the state which joined the soft board to the surface of the film-form or sheet-like packaging material, and the hard board to the back surface. It is an expanded sectional view which shows the state which tries to open the slit-shaped opening of a film form or a sheet-like packaging material, and to fill with the contents. It is an expanded sectional view which shows the state which closed the slit-shaped opening of a film form or a sheet-like packaging material. It is an expanded sectional view of the state where the slit-like opening of the film-like or sheet-like packaging material was closed and the adhesive sealing tape was stuck. It is a perspective view of the decomposition | disassembly state of each part which comprises the holding member of the non-return valve of the packaging material with a non-return valve. It is a perspective sectional view of the decomposition state of each part. It is a perspective sectional view showing progress of assembling each of a check valve housing and a filter member. It is a perspective view which shows the state which each assembled | attached the housing of the check valve, and the filter member. It is a perspective sectional view showing the state where each of the housing of the check valve and the filter member was assembled. The state which each connected the housing of the check valve and the filter member is shown, (a) is the perspective view, (b) is the perspective sectional view. It is a schematic front view of the state which is going to insert the holding member of a non-return valve in a packaging material. It is a schematic front view of the state which attached the tube of the vacuum pump to the deaeration port of the housing.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a filling port opening / closing mechanism for a packaging material with a check valve according to the present invention will be described below in detail with reference to the drawings.
FIG. 1 shows one embodiment of a filling port opening / closing mechanism for a packaging material with a check valve according to the present invention, and shows an overall view of the packaging material provided with the filling port opening / closing mechanism.
That is, the filling port opening / closing mechanism 11 of the packaging material with a check valve according to the present invention is integrated with a slit-like opening 13 provided on the surface of the film-like or sheet-like packaging material 12 and an upper surface thereof sandwiching the slit-like opening 13. A soft plate 14 joined together, a hard plate 15 joined integrally at a position corresponding to the slit-like opening 13 on the back surface of the film-like or sheet-like packaging material 12, and a slit-like opening 13 in the soft plate 14. And an adhesive sealing tape 16 that is detachably attached to the upper surface.
Incidentally, the film-like or sheet-like packaging material 12 includes not only a plastic film packaging material but also a paper packaging material, an aluminum foil packaging material, or a composite material packaging material thereof.
In FIG. 1, reference numeral 20 denotes a check valve holding member of the packaging material with a check valve. The check valve holding member 20 of the packaging material with a check valve is shown in FIGS. This will be described in detail.

Next, details of the filling port opening / closing mechanism 11 of the packaging material with a check valve according to the present invention will be described with reference to FIGS.
FIG. 2 shows a state before assembling the filling port opening / closing mechanism 11 part of the packing material with check valve, and FIG. 3 shows a state after assembling the filling port opening / closing mechanism 11 part of the packing material with check valve. Is.
In the figure, a slit-like opening 13 extending in the width direction of the packaging material 12 is formed on the surface side of the film-like or sheet-like packaging material 12. A soft plate 14 is integrally bonded to the upper surface of the slit-shaped opening 13. Even if a pair of soft plates 14 is joined with the slit-shaped opening 13 sandwiched between the soft plates 14, a single soft plate 14 is joined to the slit-shaped opening 13, and then the slit-shaped opening 13 is joined thereto. You may form a slit along.
In the figure, reference numeral 15 denotes a hard plate integrally joined at a position corresponding to the slit-like opening 13 on the back surface of the film-like or sheet-like packaging material 12.
The soft plate 14 is not particularly limited as long as it is a material excellent in adhesiveness with the adhesive sealing tape 16, but a polyurea resin, a urethane resin, or the like can be suitably used.
Further, the hard plate 15 is not particularly limited as long as it has hardness and is difficult to be deformed, and is compatible with the film-like or sheet-like packaging material 12.

In the filling port opening / closing mechanism 11 of the packaging material with a check valve, the film-like or sheet-like packaging material 12 and the soft plate 14 are joined, and the film-like or sheet-like packaging material 12 and the hard plate 15 are joined. Bonding by an adhesive or bonding by fusion may be used. Of course, the whole can be joined with an adhesive, and the outer edge can be fused to join firmly and integrally.
The means for joining the film-like or sheet-like wrapping material 12 to the soft plate 14 and the hard plate 15 can be appropriately determined in consideration of the material and thickness of each material, compatibility with the contents, and the like. .

Next, FIG. 4 shows a state in which the slit-like opening 13 (soft plate 14a) of the film-like or sheet-like packaging material 12 is opened to fill the contents made up of granular materials, etc. FIG. 5 shows the contents. It shows a state in which the slit-like opening 13 of the film-like or sheet-like packaging material 12 is closed after filling the object 17.
In addition, the packaging material 12 at the position of the soft plate 14b opposite to the side where the slit-shaped opening 13 opens is sealed so that the contents do not enter.

As shown in FIG. 6, after the filling of the contents 17 is completed, the filling port opening / closing mechanism 11 of the packing material 12 with a check valve adheres to the slit portion of the soft plate 14 on the upper surface of the slit-shaped opening 13. If the adhesive sealing tape 16 is detachably attached, the contents 17 can be securely stored in the packaging material 12.
The adhesive sealing tape 16 has an easily peelable adhesive force, and therefore can be repeatedly applied and peeled off.
Incidentally, after the contents 17 are filled, if the inside of the film-like or sheet-like packaging material 12 is evacuated by vacuum suction, the contents 17 can be stored for a long time while preventing deterioration without touching the air. Can be kept.

Next, FIGS. 7 to 13 are for explaining a check valve holding member disposed at an appropriate position of the film-like or sheet-like packaging material 12, and FIG. 7 shows the check valve holding member. FIG. 8 is a perspective view of the disassembled state of each part, and FIG. 8 is a perspective sectional view of the disassembled state of each part.
A check valve holding member 20 attached to a film-like or sheet-like packaging material, which will be described later, includes a check valve housing 21 provided with a deaeration port 22 for mounting a vacuum pump tube on the upper end, and the housing 21. A check valve 31 is provided with the valve port 32 facing the deaeration port 22, and a filter member 41 connected to the cylindrical end of the housing 21 with an extension tube 42. 43 is a filter case, 44 is a filter housed in the filter case 43, and 46 is an auxiliary tube for connecting the extension tube 42 to a tube mounting portion 45 protruding from the filter case 43.

The non-return valve housing 21 having a deaeration port 22 for mounting a vacuum pump tube at the upper end is appropriately mounted on the packaging material 12 by means. That is, the housing 21 is fitted in the outer cylinder 23, and a lid body 24 is attached from above the housing 21 so that the deaeration port 22 protrudes from the round hole 25 of the lid body 24. A cap 26 is detachably attached to the deaeration port 22, and 27 is a washer interposed between the lower surface of the housing 21 and the upper end of the outer cylinder 23.
Then, the packaging material 12 and the outer cylinder 23 are joined together by, for example, welding by heating between plastic films or using an adhesive.

A check valve 31 provided with the valve port 32 facing the deaeration port 22 in the housing 21 is held in a first holding cylinder 35 having a larger diameter than the check valve 31 and is It fits into the upper part of the housing 21.
That is, the check valve 31 is held by engaging an outward flange 33 provided at its cylindrical end with the lower end of the first holding cylinder 35. Reference numeral 34 denotes a cylindrical spacer that is built in the check valve 31 and prevents the check valve 31 from being deformed.
On the other hand, an outward step 36 is formed in the lower part of the housing 21, and a second holding cylinder 37 is fitted into the step 36, and an outward flange is formed from the upper part of the second holding cylinder 37. The guide tube 38 provided with is inserted through the connecting tube 39 and connected to the extension tube 42.

In the housing 21, the check valve 31 disposed with the valve port 32 facing the deaeration port 22 is formed in an outward arch shape by an elastic material, and A minus or plus slit is formed as a valve port 32 at the top.

Next, an assembling process of each part constituting the check valve holding member 20 will be described with reference to FIGS.
FIG. 9 shows a process of assembling the housing 21 and the filter member 41 of the check valve 31, and the outer cylinder 23 is disposed between the housing 21 of the check valve 31 and the packaging material 12. It is desirable to interpose a fusing connection member that firmly joins the two.
First, the check valve 31 is fitted upward into the first holding cylinder 35, and a spacer 34 is attached to the check valve 31. On the other hand, a guide cylinder 38 having an outward flange is inserted from the upper part of the second holding cylinder 37, and a connecting cylinder 39 is attached to the lower end thereof.
Further, an extension tube 42 is connected to the upper end of the filter case 43 of the filter member 41.

Next, as shown in FIGS. 10 and 11, a first holding cylinder 35 fitted with a check valve 31 is press-fitted into the housing 21, and the check valve 31 is inserted into the housing 21 together with the first holding cylinder 35. Install and hold inside. Then, the second holding cylinder 37 inserted through the guide cylinder 38 is fitted into a step 36 provided in the lower part of the housing 21.
A filter 44 is attached in the filter case 43 of the filter member 41.
In this state, the check valve 31 is connected to the filter member 41 via the connecting cylinder 39, and the check valve housing 21 is fitted into the outer cylinder 23.
FIGS. 12A and 12B are a perspective view and a perspective sectional view of a completed state, respectively, and FIG. 13 is a schematic front view of a state in which a check valve holding member is to be inserted into the packaging material.

The air in the film-like or sheet-like packaging material 12 is deaerated using a vacuum pump via the check valve 31.
That is, as shown in FIG. 4 to FIG. 6, the contents 17 are put through the slit-shaped opening 13 of the packaging material 12, and the adhesive sealing tape 16 is pasted on the slit portion of the soft plate 14 on the upper surface of the slit-shaped opening 13. To do.

Then, the tube of the vacuum pump 51 is attached to the deaeration port 22 as shown in FIG.
After that, if the vacuum pump 51 is operated, the air in the packaging material 12 is discharged, but the check valve 31 does not allow the outside air to flow back into the packaging material 12.

The filling port opening / closing mechanism of the packaging material with a check valve according to the present invention can be used to fill various contents in the packaging material, and can be used to fill the packaging material with various contents. It can be suitably applied as a mechanism.

DESCRIPTION OF SYMBOLS 11 Filling port opening / closing mechanism of packaging material with check valve 12 Film-like or sheet-like packaging material 13 Slit-like opening 14 Soft plate 14a, 14b Soft plate 15 Hard plate 16 Adhesive sealing tape 17 Contents 20 Holding check valve Member 21 Housing 22 Deaeration port 23 Outer tube 24 Cover body 25 Round hole 26 Cap 27 Washer 31 Check valve 32 Valve port 33 Flange 34 Cylindrical spacer 35 First holding tube 36 Step 37 Second holding tube 38 Guide tube 39 Connecting cylinder 41 Filter member 42 Extension tube 43 Filter case 44 Filter 45 Tube mounting portion 46 Auxiliary tube 51 Vacuum pump

Claims (3)

A slit-like opening provided on one side of the film-like or sheet-like packaging material, a soft plate integrally joined to the upper surface across the slit-like opening, and the slit on the other side of the film-like or sheet-like packaging material A check valve comprising: a hard plate integrally joined at a position corresponding to the opening, and an adhesive sealing tape removably attached to a slit portion of the soft plate on the upper surface of the slit opening. Opening and closing mechanism for packing material. The bonding between the film-shaped or sheet-shaped packaging material and the soft plate, and the bonding between the film-shaped or sheet-shaped packaging material and the hard plate include bonding by an adhesive and bonding by fusion, respectively. The filling port opening / closing mechanism of the packaging material with a check valve according to 1. The check according to claim 1 or 2, wherein the adhesive sealing tape detachably attached to the slit portion of the soft plate on the upper surface of the slit-like opening is capable of being repeatedly attached and peeled off. Filling opening and closing mechanism for valved packaging.

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