JP5633063B1 - Packaging material with check valve - Google Patents

Abstract

An object of the present invention is to store a check valve in a packaging material so as not to obstruct handling of the packaging material and to make the packaging material very hygienic because the check valve is not exposed to the outside. A packaging material with a check valve is provided. A plastic film packaging material, a cylindrical film outer tube welded to the opening of the packaging material, and a deaeration port that is built in the outer tube and is fitted with a vacuum pump tube at the upper end. A protruding check valve housing, a check valve disposed in the housing with the valve port facing the deaeration port, and a filter connected to the opening of the check valve by an extension tube In the case where a vacuum pump tube prepared separately is attached to the deaeration port of the housing in the outer cylinder and the vacuum pump is operated to discharge the air in the packaging material, the check valve A packaging material with a check valve, characterized in that outside air does not flow back into the packaging material. [Selection] Figure 7

Description

TECHNICAL FIELD The present invention relates to a packaging material with a check valve, and more particularly, a reverse valve in which a check valve is attached to an opening of a deformable packaging material (for example, a soft container) so that air in the packaging material can be quickly discharged. It relates to a packaging material with a stop valve.

Conventionally, as a vacuum pump mechanism that is used to quickly exhaust the air in the packaging material, a check valve is arranged in a suitable position by sealing the space between the inner cylinder and the outer cylinder. On the contrary, a vacuum pump mechanism with a check valve is well known in which air pressure is released when the inner cylinder is pushed into the outer cylinder, and air in the packaging material is also drawn when the inner cylinder is pulled out. .

As an example, there is a vacuum pump mechanism of Japanese Patent Application No. 2012-218947 according to the invention of the present inventor.
The vacuum pump mechanism is composed of a fixed member having a cylinder and a movable member having an inner cylinder that is movably mounted in the cylinder and has an operation handle attached to the tip thereof. By operating the handle for retreating the movable member, the air in the packaging material is sucked into the cylinder, and then the air in the cylinder is discharged via the inner cylinder by pushing the movable member. Therefore, the air in the packaging material is sucked and discharged by repeating the piston movement of the movable member.

Japanese Patent Application No. 2012-218947

However, in the prior art according to the invention of the present inventor, each member of the fixed member and the movable member is attached so as to protrude outside the packaging material, which hinders handling of the packaging material. It was easy and hygienic because it was exposed to the outside.

Accordingly, an object of the present invention is to prevent the handling of the packaging material from being disturbed by storing the check valve in the packaging material, and since the check valve is not exposed to the outside, the packaging material is very hygienic. It is intended to provide a packaging material with a check valve.

The packaging material with a check valve of the present invention is for achieving the above-described problem, and is a plastic film packaging material and a tubular shape that is welded to the opening of the packaging material and accommodated in the packaging material A film-made outer cylinder, a housing for a check valve provided in the outer cylinder and projecting a deaeration port to which a vacuum pump tube is attached at the upper end, and the valve port in the housing is connected to the deaeration port side And a filter member connected to the cylindrical end of the check valve with an extension tube,
When a vacuum pump tube prepared separately is attached to the deaeration port of the housing in the outer cylinder, and the vacuum pump is operated and the air in the packaging material is discharged, the outside air is wrapped by the check valve. It is characterized in that it does not flow backward.

In the packaging material with a check valve according to the present invention, the check valve disposed in the housing with the valve port facing the deaeration port is held at its cylindrical end by a holding tube, and the holding tube Is mounted in the housing by packing disposed on the side and bottom surfaces thereof, and a through hole for inserting the extension tube of the filter member into the cylindrical end portion of the check valve is formed in the packing on the bottom surface. It is also characterized by that.

In the packaging material with a check valve according to the present invention, the check valve is formed in an inward direction at a corresponding portion of the holding cylinder by forming a mounting groove on an outer periphery of an outward flange provided at the cylindrical end portion. It is also characterized in that the mounting groove is fitted and connected to the flange.

In the packing material with a check valve according to the present invention, the check valve disposed in the housing with the valve port facing the deaeration port side is formed in an outward arch shape by an elastic material. In addition, a minus or plus slit is formed as a valve opening at the top.

The packaging material with a check valve of the present invention is welded to the opening of the packaging material and stored in the packaging material, and the outer cylinder made of a cylindrical film is welded to the outer packaging material in the welding portion, A connecting member made of a tubular film that is not welded to the inner surface is also attached.

According to the first aspect of the present invention, the check valve can be accommodated in the packaging material with a simple structure, and a separately prepared vacuum pump tube can be attached to the housing in the outer cylinder holding the check valve. It is possible to provide a packaging material with a check valve that can quickly discharge the air in the packaging material when the vacuum pump is operated by attaching it to the mouth.
According to the second aspect of the present invention, the check valve can be reliably held in an airtight state, and the check valve is held so as not to cause a deformation that impairs the function. It has become possible to provide a packaging material with a check valve.
According to the invention of claim 3, a mounting groove is formed in the outer periphery of the outward flange provided at the cylindrical end of the check valve, and the mounting is performed on the inward flange provided at the corresponding portion of the holding cylinder. Since the check valve is connected by inserting the groove, it is possible to provide a packaging material with a check valve that can attach the check valve to the holding cylinder with a very simple structure.
According to the invention of claim 4, the check valve disposed with the valve port facing the deaeration port in the housing is formed in an outward arch shape by an elastic material, And since the minus or plus-like slit is formed as the valve port at the top, the airtightness of the check valve becomes more reliable.
According to the invention of claim 5, the outer cylinder made of a cylindrical film welded to the opening of the packaging material is a connecting film material that is welded to the outer packaging material at the welded portion and the inner surfaces are not welded to each other. Since it is attached, the outer cylinder can be welded to the packaging material while keeping the opening of the opening of the packaging material.

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 of this invention. 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 an outer cylinder, a check valve housing, and a filter member. It is a perspective view which shows the state which each assembled | attached the outer cylinder, the housing of the non-return valve, and the filter member. It is a perspective sectional view showing the state where the outer cylinder, the housing of the check valve, and the filter member are assembled. It is a perspective sectional view in the state where it is going to connect each of an outer cylinder, a housing of a check valve, and a filter member. The state which each connected the outer cylinder, the housing of the non-return valve, and the filter member is shown, (a) is the perspective view, (b) is the perspective sectional view. It is each a perspective view of the holding member of a packaging material and a non-return valve. It is a perspective view of the state which is going to insert the holding member of a non-return valve in a packaging material. It is a perspective view of the state which inserted the holding member of the non-return valve in the packaging material. It is a principal part expansion perspective view which is going to weld the outer cylinder of the holding member of a non-return valve to a packaging material. It is a principal part expansion perspective view of the state which welded the outer cylinder of the holding member of the non-return valve to the packaging material. It is a perspective view which welds the outer cylinder of the holding member of a non-return valve to a packaging material, and is going to mount | wear a connection tube with the deaeration port of a housing. It is a principal part expansion perspective view which shows the state which is going to mount | wear with a connection tube. It is a principal part expansion perspective view which shows the state which mounted | wore the connection tube. It is a perspective view of the completed state which attached the holding member of the non-return valve to the packaging material. It is sectional drawing of the state which is going to mount | wear with the tube of a vacuum pump to the connection tube of the holding member of the non-return valve attached to the packaging material. It is a perspective view of the state which is going to store a stored item in a packaging material. It is a perspective view which shows the state which tries to assemble | attach the clip for a bag stop to the large opening part of a packaging material. It is a perspective view which shows the state which assembled | attached the clip for a bag stop on the large opening part of the packaging material. It is a perspective view which shows the state which attached the tube of the vacuum pump to the connection tube of the holding member of the non-return valve of the packaging material sealed with the clip for bag fastening. It is the schematic of the state which act | operates a vacuum pump and deaerates the air in a packaging material. It is the schematic of the state which finished deaerating the air in a packaging material.

Hereinafter, embodiments of a packaging material with a check valve according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of an exploded state of each part constituting a check valve holding member of a packaging material with a check valve according to the present invention, and FIG. 2 is a perspective sectional view of an exploded state of each part.
A check valve holding member 10 attached to a packaging material made of plastic film, which will be described later, has an outer cylinder 11 made of a cylindrical film welded to an opening of the packaging material and housed in the packaging material, and the outer cylinder 11. The check valve housing 21 is provided with a deaeration port 22 projecting from the upper end of the vacuum pump tube, and the valve port 32 is disposed in the housing 21 facing the deaeration port 22 side. And a filter member 41 connected to the cylindrical end of the check valve 31 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.

More specifically, a connecting member 12 made of a tubular film welded to the outer packaging material in the welded portion and not welded to the inner surface at the welded portion of the tubular film made of the outer tube 11. The connecting member 12 is previously welded to the inner side of the outer cylinder 11.
As the connecting member 12 made of a cylindrical film in which the inner surfaces are not welded to each other, a plastic composite film in which film materials having different properties are laminated, or a film material whose inner surfaces are roughened in advance can be used. By roughening the surface, it is possible to obtain the connecting member 12 in which the inner surfaces are not welded to each other at a normal welding temperature.

The check valve housing 21 having a deaeration port 22 for mounting a vacuum pump tube at the upper end is mounted in the outer cylinder 11 by appropriate means. For example, it may be welding by heating between plastic films, or connecting using an adhesive.

The check valve 31 disposed in the housing 21 with the valve port 32 facing the deaeration port 22 is held in a holding cylinder 35 having a larger diameter than the check valve 31.
That is, a mounting groove 34 is formed on the outer periphery of the outward flange 33 provided at the cylindrical end of the check valve 31, and the mounting groove 34 is formed in the inward flange 36 provided at a corresponding position of the holding cylinder 35. It is held by fitting and connecting.
The housing 21 and the holding cylinder 35 are attached to the housing 21 in an airtight state through packings 37 and 38 disposed on the side and bottom surfaces of the holding cylinder 35, respectively.
The bottom packing 38 is formed with a through hole 39 for inserting the extension tube 42 of the filter member 41 into the cylindrical end of the check valve 31.

The check valve 31 provided with the valve port 32 facing the deaeration port 22 in the housing 21 has a valve port 32 formed in an outward arch shape by an elastic material, and its top portion. In addition, a negative or positive slit is formed as the valve port 32.

Next, an assembling process of each part constituting the check valve holding member will be described with reference to FIGS.
FIG. 3 shows a process of assembling the outer cylinder 11, the housing 21 of the check valve 31, and the filter member 41. The connecting member 12 is welded to the inner side of the outer cylinder 11.
Further, a side packing 37 is inserted into the housing 21, and the check valve 31 is fitted with a holding cylinder 35 by fitting an inward flange 36 provided at a corresponding position of the holding cylinder 35 into its mounting groove 34. It is connected.
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. 4 and 5, the holding cylinder 35 is press-fitted into the packing 37 mounted in the housing 21, and the check valve 31 is attached and held together with the holding cylinder 35 in the housing 21. Then, the bottom packing 38 is attached to the bottom of the housing 21.
A filter 44 is attached in the filter case 43 of the filter member 41.
In this state, the outer cylinder 11, the check valve housing 21, and the filter member 41 are connected by the arrangement shown in FIG.
FIGS. 7A and 7B show a completed state in which the check valve housing 21 is attached into the outer cylinder 11 and the extension tube 42 of the filter member 41 is inserted into the cylindrical end of the check valve 31. It is a perspective view and a perspective sectional view.

Next, an example of a process of attaching the check valve holding member 10 to the packaging material 51 will be described with reference to FIGS.
As shown in FIG. 8, an end opening 53 to which the holding member 10 of the check valve is attached is arranged at a side end of the large opening 52 of the packaging material 51 with a lower step than the large opening 52. Yes.
Reference numeral 23 denotes a connection tube for fitting in a deaeration port 22 in the housing 21 and mounting a separately prepared vacuum pump tube.
Then, as shown in FIG. 9, the end opening 53 of the packaging material 51 is opened, and the check valve holding member 10 is sequentially inserted from the filter member 41 side.

FIG. 10 shows a state in which the check valve holding member 10 has been inserted, and FIG.
Next, by applying heat and pressure in the direction of the arrow in FIG. 11, as shown in FIG. 12, the contact portion with the packaging material 51 of the outer tube 11 made of the tubular film is welded by the connecting member 12 made of the tubular film. Is done.
At that time, the inner surfaces of the connecting members 12 are not welded to each other, and the open state of the inner surfaces of the connecting members 12 is maintained.

13 and 14 show a state in which the inner surface of the connecting member 12 is opened and the connecting tube 23 is to be fitted into the deaeration port 22 in the housing 21, and the connecting tube 23 is prepared separately. A vacuum pump tube is attached.
FIG. 15 shows a state where the connecting tube 23 is fitted in the deaeration port 22 of the housing 21.
FIG. 16 shows a completed state in which the packaging material 51 and the check valve holding member 10 are assembled.
Further, FIG. 17 shows a state in which a separately prepared tube 62 of a vacuum pump 61 is attached to the connecting tube 23 attached to the deaeration port 22 of the housing 21.

Based on FIG. 18 thru | or FIG. 23, the operation | work process which deaerates the air in the packaging material 51 using the vacuum pump 61 through the non-return valve 31 is demonstrated.
First, as shown in FIG. 18, the contents M are introduced through the large opening 52 of the packaging material 51.
Next, as shown in FIG. 19 and FIG. 20, a bag fastening clip 71 is attached to the large opening 52 of the packaging material 51. The details of the clip 71 for bag fastening are described in Japanese Patent Application No. 2013-222836 (Japanese Patent No. 5441203) according to the inventor's invention.

The outline of the clip for holding the bag includes an outer fixing frame having a tapered inner surface that narrows downward, an elastic sheet disposed on the tapered inner surface of the outer fixing frame, and a surface along the surface of the elastic sheet. A blade plate formed with a protrusion on the surface on the elastic sheet side along the length direction at a middle position in the width direction, and a presser frame having a wedge-shaped cross section disposed along the inner surface of the blade plate. Provided with an opening of a flexible sheet bag interposed on the inner surface of the elastic sheet disposed in the outer fixed frame, and further disposed with a blade plate, and by pressing the retainer frame into a wedge shape, The protrusion is engaged with the elastic sheet via the bag, and the opening of the bag is surely sealed.

19 is a perspective view before attaching the bag fastening clip 71 to the large opening 52 of the packaging material 51, and FIG. 20 is a perspective view after the attachment. Note that 61 is a vacuum pump prepared separately, and 62 is a tube attached to the vacuum tube 61.

Then, as shown in FIG. 21, the tube of the vacuum pump 61 is attached to the deaeration port 22 of the housing 21 in the outer cylinder 11 via the connection tube 23.
After that, if the vacuum pump 61 is operated by operating the handle 63 of the vacuum pump 61 as shown in FIG. 22, the air in the packaging material 51 is discharged, but the check valve 31 allows the outside air to flow to the packaging material 51. There is no backflow inside.
FIG. 23 is a front view showing a state where the air in the packaging material 51 is finally discharged.

The packaging material with a check valve of the present invention can be used to prevent various contents stored in the packaging material from being oxidized or altered by contact with air. It can be suitably applied as a packaging material for.

DESCRIPTION OF SYMBOLS 10 Check valve holding member 11 Outer cylinder 12 Connecting member 21 Housing 22 Deaeration port 23 Connecting tube 31 Check valve 32 Valve port 33 Flange 34 Mounting groove 35 Holding tube 36 Flange 37, 38 Packing 39 Through hole 41 Filter member 42 Extension tube 43 Filter case 44 Filter 45 Tube mounting part 46 Auxiliary tube 51 Packaging material 52 Large opening 53 End opening 61 Vacuum pump 62 Tube M Contents

Claims (5)

A packaging material made of plastic film, an outer cylinder made of a cylindrical film welded to the opening of the packaging material and housed in the packaging material, and a vacuum pump tube attached to the upper end of the packaging material. A non-return valve housing having a deaeration port protruding therein, a check valve disposed in the housing with the valve port facing the deaeration port side, and an extension tube at an opening of the check valve A coupled filter member;
When a vacuum pump tube prepared separately is attached to the deaeration port of the housing in the outer cylinder, and the vacuum pump is operated and the air in the packaging material is discharged, the outside air is wrapped by the check valve. A packaging material with a check valve, characterized in that it does not flow backward. A check valve disposed in the housing with the valve port facing the deaeration port is held at its cylindrical end by a holding cylinder, and the holding cylinder is arranged by packing disposed on the side surface and bottom surface thereof. 2. The reverse according to claim 1, wherein the reverse hole is mounted in the housing, and a through hole for inserting an extension tube of a filter member into an opening of the check valve is formed in the packing of the bottom surface. Packaging material with stop valve. The check valve has a connection groove formed on an outer periphery of an outward flange provided at the cylindrical end portion, and the connection groove is fitted and connected to an inward flange provided at a corresponding portion of the holding cylinder. The packaging material with a check valve according to claim 2. The check valve disposed in the housing with the valve port facing toward the deaeration port has a valve port portion formed in an outward arch shape by an elastic material, and has a minus or plus shape at the top. The packaging material with a check valve according to any one of claims 1 to 3, wherein the slit is formed as a valve port. The tubular film outer cylinder welded to the opening of the packaging material and housed in the packaging material is connected to the outer packaging material at the welded portion, and the tubular film connection is not welded to the inner surface. The packaging material with a check valve according to any one of claims 1 to 4, wherein a member is attached.

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