JP5052869B2 - Bag-like container that can be repeatedly vacuumed - Google Patents

Description

  This invention can store a granular material such as rice, a powdery material such as wheat flour and tea leaves in a vacuum state for a long period of time, and can form and maintain a vacuum state again after taking out the contents in the container after opening. The present invention relates to a vacuum storage container that can be used.

Conventionally, various containers called vacuum containers have been proposed, but most of them are for the purpose of maintaining quality from the manufacturing process to the start of use through the distribution process, such as tea leaves and coffee beans. Some are provided with a valve for excellent oxidation prevention. And the deaeration method and powder storage container in the bag as grains storage containers, such as rice, are proposed.
For example, Japanese Patent Laid-Open No. 10-114370 is a rice storage bag equipped with a check valve, and is configured to suck the air in the bag after filling the contents and maintain the vacuum state. There is no mention or suggestion regarding vacuuming. Japanese Patent Application Laid-Open No. 2003-285887 is a container that stores powder in a flexible container, and includes a check valve together with a filter. Although it is basically an invention as a container for filling toner particles, it also suggests application to powdered and granular foods, but considering the transportation from filling to opening, etc. There is no mention or suggestion about vacuuming again during use after discharging. Japanese Patent Laid-Open No. 2006-273410 can lock and release the opening valve with one touch, and uses a common vent, but does not include a check valve, so the opening valve is locked after deaeration. Must be performed manually, and it is difficult to maintain a vacuum state. In addition, in Japanese Translation of PCT International Publication No. 2006-502927, there is a check valve, which describes a configuration that allows the user to reliably control whether to maintain or release the vacuum state. There is no mention or suggestion about the means to cancel.
Since the fastener is provided in the opening of the bag, it is assumed that the vacuum release is actually performed by opening the fastener. In other words, this is nothing but a check means locking means.
JP 10-114370 A JP 2003-285887 A JP 2006-273410 A Special table 2006-502927

Bags and containers are the mainstream in large-capacity storage containers, including rice and other granular materials, flour and other powdered materials, and tea leaves. The reason is that a large opening is required for filling and discharging because of its efficiency. Because it becomes. For example, taking a bag with a capacity of 15 kg to 20 kg, which is a general conveying means such as rice or flour, as an example, when taking out the contents in units of 1 kg, the end of the bag Is generally opened or a minimum necessary opening is made and taken out therefrom. Rice, flour, etc. and tea leaves are filled by the respective manufacturers and distributors and put into circulation. Bags that contain granular items such as rice are often equipped with small holes for discharging air in the bag, considering the efficiency of stacking, etc. I don't like the oxidation by air, and nowadays many things are packed in vacuum.

Now, the vacuum state is maintained at the time of filling, and the state is maintained until the end user, but the vacuum state disappears at the same time as opening. There is no problem as long as the entire amount is consumed at the same time as opening, but there are many cases where the contents are used for dispensing. In that case, the remaining amount is kept in the container without being evacuated thereafter. Needless to say, the oxidation of the contents begins as soon as it is opened. In general, for example, in the case of a bag, it is devised so that air does not enter by pushing in the space for discharge and pushing out the internal air and folding the opening, but this can prevent oxidation is not.

  Therefore, it is conceivable to discharge the air inside the container using a suction pump or the like, and a discharge valve, a check valve, or the like has been proposed. In addition, when the contents are powdery, the contents are sucked out simultaneously with the air discharge in the container, so that the contents are separated as disclosed in JP-A-2003-285887. A filter is provided.

  However, all of the conventional proposed air discharge valves and the like are provided separately from the content outlet. In such a case, no matter how excellent the performance of the air discharge valve or the check valve is, the internal vacuum state cannot be maintained unless the air outlet of the contents is sufficiently maintained.

  Therefore, the present invention could not be achieved in the conventional bag-like container by providing a large-diameter opening so that the contents can be easily taken out, and providing the internal air outlet in the opening in a highly airtight manner. A large-capacity bag-like container capable of repeatedly maintaining a vacuum state is proposed.

That is, the bag-like container of the present invention that can be repeatedly stored in vacuum (hereinafter referred to as the bag-like container of the present invention) is formed by forming the opening of the bag-like container formed of a flexible sheet with a heat-shrinkable resin sheet material and adapted to the outlet with one of the vent together comprising a discharge port formed in the hard material bonded to the opening of the bag-like container, the breathable filter for separating the contents and the air inside by gender sheet material a lid which, provided with a through-hole penetrating in the axial direction, a bolt incorporating a check valve in the through hole in series to yet control the opening and closing of the vent hole and adapted to the vent holes in the lid and it is characterized in that a clamp for holding the bolt brought into contact with the said lid into close contact with the lid member and the discharge port.

The repeated vacuum storable bag-like container of the invention, by tightening the bolt assembly all components, can degassed prepared by blocking the vent hole with pushing the lid body to the outlet at the same time, the container body If opening the inner after the vacuum state and it is characterized also in that by balancing the vessel transmembrane pressure by outside air flowing by loosening the bolt and removable lid.

  Since the bag-like container of the present invention is configured as described above, it is repeatedly discharged after discharging while using granular materials such as rice, powdered materials such as wheat flour and tea leaves that have been distributed under vacuum. A vacuum state can be formed and maintained for a long time. And by making it into a vacuum state, it is possible to prevent the deterioration of rice, flour, etc. and tea leaves, as well as the generation of insects and the like.

  Hereinafter, embodiments of the bag-like container of the present invention will be described in detail with reference to the drawings.

  1 to 13 show a first embodiment of the present invention. FIG. 1 is an overall view of a bag-like container. DESCRIPTION OF SYMBOLS 1 is a bag-shaped container of this invention, 2 is a bag-shaped container main body formed with the flexible sheet | seat, 3 is the opening part, 4 is an opening part closure means provided with the air exhaust valve provided in the opening part It is. As the flexible sheet forming the bag-like container body 2, in addition to materials such as resin, metal, cloth, and rubber, a composite sheet thereof is preferably used.

  FIG. 2 is an overall view of the opening closing means 4. The opening closing means 4 includes a discharge port 5, a lid 8, a clamp 9, and a bolt 10 with a deaeration valve made of a hard material. The discharge port 5 provided in the opening 3 of the container main body 1 is a cylindrical body, and the groove 6 (three in the figure) is provided on the outer periphery of the lower half. Reference numeral 7 denotes a rod-like body hanging from the lower end. This prevents the bag-like container main body sheet from sticking to the end of the opening, and prevents breakage due to the flexible sheet being bent at the lower end corner of the discharge port 5.

In the figure, 8 is a lid, 9 is a clamp, and 10 is a bolt with a deaeration valve. FIG. 3 is an assembly view of FIG. 2 and a partial longitudinal sectional view. The lid 8 has a cylindrical portion 12 depending from the top plate portion 11. The top plate 11 is provided with a deaeration through hole 13 at the center, and a seal member 14 with which a lower end 26 of a bolt 10 with a deaeration valve to be described later comes into contact.

A filter 15 having a ventilation characteristic is inserted in the lower cylindrical portion 12 according to the granularity of the stored contents, and the contents are separated during degassing and are not easily clogged. It is closed with a bottom lid 17 having pores 16. In order to remove or replace the air-permeable filter 15 for cleaning, it is desirable that the bottom cover 17 is engaged with the lower end of the cylindrical portion 12 with a screw.

The type and material of the breathable filter 15 are not limited as long as the air and the contents can be reliably separated from each other during degassing according to the particle size of the contents stored in the container. From foamed urethanes such as fine sponges and foamed materials such as foamed metals and ceramics, laminates of felts, non-woven fabrics, membranes such as paper and cloth, and other means commonly referred to as filters or filter media It can be appropriately selected and used.

  An O-ring 18 is provided as an airtight means for improving airtightness at a contact portion between the flange portion of the top plate portion 11 of the lid 8 and the discharge port 5. The airtight means is not limited to the O-ring, and may be on the lid 8 side or on the discharge port 5 side.

  In the figure, the clamp 9 has a downward C-shape, and a screw hole 20 is formed in the center portion to which the screw portion 21 of the bolt 10 with a deaeration valve is screwed. Is formed with a jaw portion 19 in which the discharge port 5 and the flange portion of the lid are engaged together. The clamp 9 tightens the bolt 10 with a deaeration valve to improve the airtightness of the contact surface between the discharge port 5 and the lid 8 and the contact surface between the bolt tip 25 and the seal member 14 of the through hole 13. In order to ensure, it is necessary to have a desired rigidity. The material for forming the discharge port 5, the lid 8, and the bolt 10 with the deaeration valve including the clamp is preferably a hard material typified by hard resin or metal.

4 is a front view of the bolt 10 with a deaeration valve, and FIG.
The deaeration valve bolt 10 is formed with a screw 21 in a substantially lower half, and a lower end 26 is provided with a flat portion and a protruding portion, and the shape is determined so as to fit the seal member 14. A knob 22 for rotation is provided at the upper part, and a nipple 24 for connecting a hose such as a deaeration pump for deaeration is provided at the uppermost part.

As shown in FIG. 5, the bolt 10 with the deaeration valve includes a through hole 29 in the axial direction, and a check valve 23 is built in the upper portion, and the flange portion 28 is connected to the tip of the drooping cylindrical portion 27 of the nipple 24. It is configured to be fixed with. The nipple 24 is preferably engaged with a bolt head by a screw (not shown). In the present embodiment, the check valve 23 has a bullet-like shape and has a notch at the tip. This material is preferably an elastic material such as silicon rubber.

  As shown in FIG. 6, the opening closing means 4 configured as described above is inserted into and engaged with the opening 3 of the bag-like container body 2 having the opening 3 in advance.

  FIG. 7 is a perspective view showing the configuration of the bag-like container body 2. The bag-like container body 2 is formed by superposing two flexible sheets constituting the wall surface and bonding the periphery thereof by heat welding or the like, and an opening 3 is provided on one side thereof.

  The opening 3 is constituted by a cylindrical sheet member 30 formed in a cylindrical shape as shown in FIG. The cylindrical sheet member 30 is composed of a first cylindrical sheet member 31 made of a heat-shrinkable resin sheet constituting the upper part, a non-thermal welding resin 32 on the inner side, and a heat-adhesive material 33 on the outer side. It is comprised with the 2nd cylindrical sheet member 34 which consists of a non-heat-shrinkable resin sheet. Examples of the material of the first cylindrical sheet member 31 and the second cylindrical sheet member 34 include polyethylene, polypropylene, polyester, polycarbonate, nylon resin, and the like. As a combination, for example, the outer layer 33 is polyethylene or Polypropylene is preferred, and the inner layer 32 is preferably nylon or polyester.

  As shown in FIG. 8, the inner diameter dimension of the first cylindrical sheet member 31 and the outer dimension dimension of the second cylindrical sheet member 34 are matched, and the second cylindrical sheet member 31 has the second dimension from the lower end. The cylindrical sheet member 34 is inserted to a desired position, and both are first bonded by heat welding at the arrow portions.

  As shown in FIG. 9, the bag-like container body 2 having the opening 3 is completed by being sandwiched between resin sheets constituting the container body 2 and heat-welded. At this time, the welding location is such that the resin sheet of the container main body and the first cylindrical sheet member 31 are coupled at the position A in the figure, and the resin sheet of the container main body and the second cylindrical sheet member 34 are coupled at the position B. Therefore, the strength of the welded portion is improved.

After configuring the container body 2 as described above, the discharge port 5 is inserted from the opening 3 from the rod-like body 7 side as shown in FIG. 10, and the upper end of the first cylindrical sheet member 31 is the discharge port 5. It is inserted until it reaches a position slightly above the upper stage of the groove 6 formed on the outer periphery. Then, the heat-shrinkable sheet is contracted, for example, by applying hot air to the arrow portion in the figure. The contracted first cylindrical sheet member 31 tightens the outer periphery of the discharge port 5 and bites into the groove 6 to prevent it from coming off. Thereby, the discharge port 5 is integrated with the bag-like container body 2.

  By configuring in this way, it becomes possible not only to easily provide an opening formed of a hard material in a bag-shaped container formed of a flexible sheet, but also the diameter of the opening is a maximum of only the bag-shaped container. It is possible to adapt to the maximum dimension of the opening in the case.

  The bag-like container 1 of the present invention configured as described above is used as follows.

First, the bolt 10 with a deaeration valve is loosened, the clamp 9 is removed, the lid body 8 is removed, and the contents are filled from the discharge port 5. Then, the lid 8 is fitted into the discharge port 5 and the clamp 9 is fitted. Next, the bolt 10 with a deaeration valve is tightened until the tip 26 abuts against the seal member 14 of the lid 8 and the airtightness of the part can be secured. Then, a hose from suction means such as a vacuum pump (not shown) is coupled to the nipple 24 to deaerate the air in the container body 2. The air inside the container body 2 is exhausted through the air-permeable filter → the air hole 13 in the lid 8 → the through-hole 29 in the bolt → the check valve 23 → the nipple 24.
At this time, when the internal residual air is reduced, the contents are sucked out together, but the air-permeable filter 15 is separated and prevented from being discharged to the outside. When the air is sufficiently deaerated, if the suction hose is removed, the check valve 23 functions and the outside air does not flow again.

  If the through-hole 13 is not provided in the lid 8, the lid 8 cannot be removed because it is sucked by the negative pressure inside the container even if the clamp 9 is removed here. That is, the lid cannot be opened even if the contents are to be discharged. The through-hole 13 of the lid 8 is provided for introducing outside air in such a case.

Therefore, in the bag-like container according to the present invention, when the contents are taken out, the bolt 10 with the deaeration valve is first loosened as shown in FIG. As a result, the tip 26 is separated from the sealing member 14 and ventilates, so that the outside air is drawn in by the negative pressure inside the container body 2 and approaches the normal pressure, so that the lid 8 can be easily removed. When outside air is sucked at this time passes through the breathable filter 15, so that the push back the contents powder clogged breathable filter 15 in the container body. Then, after taking out the contents, the lid 8 is again fitted into the discharge port 5, the clamp 9 is fitted, the bolt with the deaeration valve is tightened, and the internal air is deaerated with a pump or the like, thereby repeating the container The vacuum inside the body can be created and maintained again.

  As described above, when using the bag-like container of the present invention, the operation of tightening or loosening the deaeration valve-equipped bolt 10 alone controls the ventilation of the container body and the outside air. That is, first, the tightening of the bolt 10 is forgotten, or if the tightening is not sweet, the airtightness cannot be maintained, so that a vacuum state cannot be formed. In other words, the assembly of all the parts that fit the lid body 8 and the clamp 9 and tighten the bolt 10 is completed, so that the lid body 8 is simultaneously pressed against the discharge port 5 and the vent hole is closed to prepare for vacuum formation. In the process up to degassing the internal air, process mistakes such as forgetting assembly are basically impossible.

  In addition, as a form of the bag-shaped container main body 2, what is called a flat bag which overlaps two simple sheets as shown in FIG. 1, a standing pouch, a gusset bag, etc. can be selected suitably. In particular, in the case of a gusset bag, it is possible to make a considerably large capacity, and according to the form accommodated in a box with a robust frame, it can be expanded to a capacity of several tens to several hundreds of liters. Become.

  FIG. 14 is a longitudinal sectional view of a bolt 10 with a deaeration valve according to a second embodiment of the present invention. Instead of the bullet type check valve employed in the first embodiment, a check valve using a spherical valve body 35 and a spring 36 is used. In addition, the check valve is not limited as long as it restricts ventilation in one direction from the inside to the outside of the container body, such as a flap type.

  FIG. 15 is a longitudinal sectional view of an essential part showing a third embodiment of the present invention. In the first embodiment, the clamp 9 is used to fix the lid body 8. However, in this embodiment, the clamp is not used, and the check valve 23 and the nipple 24 are provided directly on the lid body. The discharge port 5 is formed in a screw cap type by providing a screw with each other.

  In the figure, 37 is an air hole and 38 is a handle insertion hole. When the lid body 8 is tightened or loosened, a rod-like body such as a driver (not shown) is inserted into the insertion hole to form a handle, which is rotated. With such a configuration, there is no risk of component loss during operation due to a reduction in the number of components, and there is a merit in terms of cost. Furthermore, there is a merit that operability is improved by releasing the operation of fitting the clamp.

  In the air hole 37, outside air was introduced by loosening the bolt 10 with the deaeration valve at the time of opening in the first embodiment, whereas air was introduced through the air hole by loosening the lid body 8. However, since the air passage is secured by loosening the screw of the lid 8, it is auxiliary.

  Since the bag-like container of the present invention is configured as described above, it is repeatedly discharged after discharging while using granular materials such as rice, powdered materials such as wheat flour and tea leaves that have been distributed under vacuum. A vacuum state can be formed and maintained for a long time.

  And by making it into a vacuum state, it is possible to prevent the deterioration of rice, flour, etc. and tea leaves, as well as the generation of insects and the like.

  In addition, depending on the configuration of the present invention, it is possible to join a large-diameter discharge port to a bag-like container, which has been impossible in the past, and furthermore, it can be applied to a large-capacity container.

It is a general view of a bag-like container. It is a whole view of an opening part obstruction | occlusion means. It is a principal part longitudinal cross-sectional view which shows the structure of an opening part obstruction | occlusion means. It is a front view of a bolt with a deaeration valve. It is a longitudinal cross-sectional view which shows the assembly-like body of a bolt with a deaeration valve. It is a conceptual diagram which shows the insertion state to the bag-shaped container main body of an opening part obstruction | occlusion means. It is a perspective view which shows the structure of an opening part and a bag-shaped container main body. It is a longitudinal cross-sectional view which shows the structure of an opening part. It is a conceptual diagram which shows the engagement state of an opening part and a container main body. It is principal part sectional drawing which shows the engagement state to the container main body of an opening part closing means. It is principal part sectional drawing which shows the engagement state to the container main body of an opening part closing means. It is a conceptual diagram which shows a deaeration state. It is a conceptual diagram which shows an inhalation state. It is a longitudinal cross-sectional view of the bolt with a deaeration valve used as the 2nd example. It is a principal part longitudinal cross-sectional view of the opening part obstruction | occlusion means which shows a 3rd Example.

DESCRIPTION OF SYMBOLS 1 Bag-shaped container 2 Bag-shaped container main body 3 Opening part 4 Opening part obstruction | occlusion means 5 Outlet 6 Strip groove 7 Rod-like body 8 Lid body 9 Clamp 10 Bolt 11 with a deaeration valve Top plate part 12 Lower cylindrical part 13 Through-hole 14 Seal member 15 Breathable filter 16 Vent hole 17 Bottom lid 18 O-ring 19 Jaw part 20 Screw hole 21 Screw part 22 Knob part 23 Check part 24 Nipple 25 Bolt tip 26 Lower end 27 Drooping cylindrical part 28 Flange part 29 Through hole 30 Tube Sheet member 31 First tubular sheet member 32 Inner layer 33 Heat-weldable material 34 Second tubular sheet member 35 Spherical valve 36 Spring 37 Air hole 38 Handle insertion hole

Claims (2)

While forming the opening of the bag-like container formed of a flexible sheet with a heat-shrinkable resin sheet material, the discharge port formed of a hard material joined to the opening of the bag-like container with the heat-shrinkable sheet material, lid and body conforming to the outlet with one of the vents provided with a breathable filter for separating the contents and the air therein with a through hole penetrating in the axial direction, the through hole opposite to the series a built-in check valve, yet adhered to the bolt for controlling the opening and closing of the vent holes compatible with the vent hole of the lid, and the lid body contact against the lid to hold the bolt and an outlet Repeat vacuum storable bag-like container, characterized in that a clamp for causing. Components by tightening all assembled the bolt, degassing prepared by blocking the vent hole with pushing the lid in the outlet can simultaneously, to open the container body after the vacuum state, the bolt The bag-like container capable of repeated vacuum storage according to claim 1, wherein the lid can be removed by balancing the pressure inside and outside the container by allowing the outside air to flow by loosening the container.

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