JPH1120875A - Packaging container and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container from which a content can be easily taken out by keeping a condition where an open/close cover is kept open once the cover is opened. SOLUTION: This packaging container, comprising a bag shaped container main body 11 formed with an air tight sheet material, a fetching opening 13 which is formed by cutting and removing a cut formed in advance and provided in the container main body for taking out a stored article in the container main body, and a sheet piece having a larger area than the opening of the fetching opening, is provided with an open/close cover 14 which can be mounted on or dismounted from the periphery of the fetching opening. Also provided is a close preventive member 15 structured to partially touch the stored article being positioned between the inside of the open/close cover and the content in a condition in which the open/close cover is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a bag-like packaging container for accommodating a large number of sheet-like articles impregnated with, for example, a chemical solution.

[0002]

2. Description of the Related Art A tissue-like sheet body impregnated with a chemical solution for disinfection is widely used for napkins for wiping hands and especially for wiping the buttocks of infants when changing diapers for infants. ing. Many such sheets are folded and accommodated in a bag-like packaging container, and can be taken out one by one from the take-out opening.

FIG. 11 is a schematic sectional view showing the structure near the outlet of such a packaging container. In the figure, a packaging container 1 is formed of a bag-shaped soft packaging material 2 formed of a relatively soft resin film or the like. A take-out port 3 is formed on the upper surface of the packaging container 1, and the contents P accommodated in the soft packaging material 2 are drawn out from the take-out port 3.

[0004] The above-mentioned contents P are formed by folding a large number of sheets of non-woven fabric or the like impregnated with a chemical solution or the like. For example, each sheet P1 is folded so as to partially overlap the next sheet P2. In a state of being stacked one after another.

[0005] Such a bag-shaped packaging container 1 is made of an air-tight material so as to accommodate a wet sheet P and prevent a chemical solution or the like from drying. The opening 3 provided in the packaging container is provided with an opening / closing lid 4 for closing it after use, so that the sheet-shaped contents P may be dried,
Garbage does not adhere.

[0006] Thus, in the packaging container 1, the open / close lid 4 is opened, and the sheet-like contents P can be sequentially picked up from above like P1 and P2 one by one, and can be taken out from the take-out opening 3. It has become. Further, a pressure-sensitive adhesive is applied to the lower surface of the opening / closing lid 4, and the lower surface of the opening / closing lid 4 is closed by closing it after use, as shown by the arrow C direction.
By adhering to the periphery of the take-out port 3, it is possible to prevent the chemical solution and the like of the stored contents P from evaporating and prevent dust from entering the inside of the packaging container 1.

[0007]

By the way, in such a packaging container 1, when the opening / closing lid 4 is opened in order to take out the contents P, the opening / closing lid 4 is originally made of one sheet or film. Because of the material, the material closes in the direction of arrow C in an attempt to return to the original shape. For this reason,
The user is forced to open the lid 4 each time the lid 4 is used even during use, which is troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a packaging container in which the contents can be easily taken out by holding the opened state once the opening / closing lid is opened. .

[0009]

According to the present invention, there is provided a bag-shaped container body formed of an airtight sheet material, and the container body for taking out the contents of the container body. A take-out opening formed by cutting off a cut formed in advance, and an opening / closing lid which is made of a sheet piece having an area larger than the opening of the take-out opening and is attached to and detached from the periphery of the take-out opening. It is fixed to the inside of the opening and closing lid, and in a state where the opening and closing lid is opened, interposed between the inside of the opening and closing lid and the container,
The present invention is achieved by a packaging container including a closing prevention member, a part of which is in contact with the container.

According to the above construction, the outlet of the container main body is opened and closed by the opening / closing lid. When the opening / closing lid is opened, the closing prevention member is interposed between the stored object and the opening / closing lid, so that the opening / closing lid can be held in the open state.

Further, the closing prevention member may be constituted by a sheet piece mounted inside the opening / closing lid. In such a configuration, since the closing prevention member is present inside the opening / closing lid, even if the opening / closing lid attempts to return to the original shape, it is interposed between the storage items and securely contacts.

The closing prevention member has an upper part fixed inside the opening / closing lid and a lower end provided with a free end. When the opening / closing lid is open, the free end of the closing prevention member is hung down. Thereby, a configuration may be adopted in which the opening / closing lid is prevented from closing by contacting the storage object. In such a configuration, a structure for preventing the opening / closing lid from being closed can be easily realized only by fixing the upper portion of the closing prevention member to the opening / closing lid.

A sheet-like reinforcing member is fixed to the periphery of the take-out opening of the container body from the back side, and the cutout of the container body is cut off to expose the sheet-like reinforcing member to the outside. May be previously partitioned by cutting, and a cut piece obtained by cutting this partitioned area may constitute the closing prevention member. Thus, if the reinforcing member is fixed to the back side of the peripheral edge of the take-out opening of the container body, the closing prevention member can be easily formed simply by cutting out the previously partitioned region from the reinforcing member.

[0014] According to the present invention, a sheet-like reinforcing member is fixed to a container body formed of an airtight sheet material, and an object to be accommodated in the container body is taken out. The same cut is formed in at least a part of the container body and the reinforcing member in order to provide a take-out port, and a sheet piece having an area larger than the opening of the take-out port with respect to a periphery of the take-out port of the container body. The opening and closing lid which is attached to and detached from the periphery of the take-out opening is fixed, the upper end side is attached to the inside of the opening / closing lid, and the lower end side which is a free end can contact the container or the container main body. And a method of manufacturing a packaging container provided with a shape-like closing prevention member.

According to the above-mentioned method, after fixing the container body and the reinforcing member, the same cut for forming an outlet for taking out the contents is simultaneously formed in the container body and the reinforcing member. A closing prevention member is provided. Thereby, the cuts having the same shape can be formed in the container body and the reinforcing member, and the take-out opening and the closing prevention member can be easily formed as compared with the case where cuts are separately formed in the container body and the reinforcing member. .

According to the present invention, the above object is achieved by fixing a sheet-like reinforcing member to a container body formed of an airtight sheet material, and the same as the container body and at least a part of the reinforcing member. By forming a cut in the container body, and by cutting out the cut, a take-out opening for taking out the contents to be housed in the container body is formed. An opening / closing lid, which is made of a sheet piece having an area larger than the opening, is fixed to the periphery of the take-out opening, and the upper end of the cutout on the reinforcing member side cut along the cut is fixed inside the opening / closing lid. This is achieved by a method of manufacturing a packaging container in which a side is fixed, and a lower end side is a free end, and a closing prevention member capable of abutting on the container or the container body is provided.

According to the above-mentioned method, after fixing the container body and the reinforcing member, the same cut for forming the outlet for taking out the contents is simultaneously formed in the container body and the reinforcing member. Then, a cut piece obtained by cutting the cut on the reinforcing member side is configured as a closing prevention member. This makes it possible to easily form the closing prevention member only by cutting off the cuts in the reinforcing member.

[0018]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The embodiment described below is a preferred specific example of the present invention, and thus various technically preferable limitations are added. However, the scope of the present invention particularly limits the present invention in the following description. The embodiment is not limited to these embodiments unless otherwise stated.

FIG. 1 is a schematic perspective view of a preferred embodiment of a packaging container according to the present invention. In FIG.
Has a bag-shaped container body 11. The container body 11
For example, polyethylene, polypropylene, polyester,
Polyvinyl chloride, vinylidene chloride, cellophane, acetate or other synthetic resin film alone or composite material, or a composite material of these and aluminum foil, etc., from a so-called soft packaging material with some flexibility Is formed. Thereby, the container main body 11 accommodates the sheet-shaped container P impregnated with, for example, a chemical solution or the like,
It is airtight so that components such as the chemical solution do not evaporate.

An opening to be the take-out port 13 is formed on the upper surface of the container body 11, so that the sheet-like contents P can be pulled out one by one. A sheet piece 14 to be an opening / closing lid is mounted on the upper surface of the container body 11 so as to cover the outlet 13. In this embodiment, a reinforcing member 12 is mounted on the back side of the container body 11.

FIG. 2 is an exploded perspective view showing the structure near the outlet 13 of the container body 11. In the figure, a notch (not shown) is formed in advance in the container body 11 along the inner diameter of the outlet 13 as described later.
By cutting off the cut, an opening to be the take-out port 13 is formed as shown in the figure.
The opening / closing lid 14 has a shape having an area larger than at least the outlet 13 and is mounted on a sheet-like material to be the container body 11.

Specifically, as shown in FIG. 2, the opening / closing lid 14 is formed of a sheet-like material having a predetermined length, and has a certain degree of flexibility and airtightness, for example, polyvinyl chloride or polyethylene. , Polypropylene or polyethylene terephthalate (PET). In the figure of the sheet-like material to be the opening / closing lid 14, a pressure-sensitive adhesive layer made of an acrylate ester or a rubber is formed on the entire lower surface, and is repeatedly applied to the upper surface of the container body 11. It can be pasted and peeled off.

The opening / closing lid 14 is provided with cuts 14a, 14a. An area 14b, which is an area on the left side of the drawing with the cuts 14a, 14a as boundaries, is an area that does not peel off once pasted near the left end of the opening 13 of the container body 11. On the other hand, the cuts 14a,
The area 14e on the right side of the figure with the boundary 14a as the boundary is formed by folding the cuts 14a, 14a to form the container body 1
The take-out opening 13 is opened and closed by repeatedly sticking and peeling the peripheral portion of the opening 13. A protruding piece 14d is provided at the right end of the opening / closing lid 14 so that the user can easily peel it off with his / her finger.
Are integrally formed.

On the other hand, the inside of the container body 11 (FIG. 2)
In this case, the reinforcing member 12 fixed from the lower side, which is equivalent to the inner surface when the container body 11 is formed in a bag shape, is a single or composite material such as polyvinyl chloride, polyethylene, polypropylene, polyethylene terephthalate (PET), or the like. It is formed in a sheet shape by the body, and is used to reinforce the periphery (peripheral edge) of the takeout opening 13 of the container body 11 and to increase the rigidity to some extent. On the upper surface of the reinforcing member 12,
In FIG. 2, an adhesive is applied to a region 12 a on the right side of a virtual line L <b> 1 passing near the center, and is fixed from the inside of the container body 11. Alternatively, regions 12a and 12 in FIG.
The reinforcing member 12 is fixed to the container body 11 by applying an adhesive to e and 12f. The reinforcing member 12 has a cut 12b formed by a perforation or the like. The cut 12 b has substantially the same shape as the outlet 13 formed in the container body 11. The area 15 defined by the cut 12b is used as a closing prevention member as described later.

Here, as shown in the right view of FIG. 3, a part of the container body 11 is cut along the cut except for the left end side, and is cut on the back surface (inside) of the opening / closing lid 14. It is affixed and integrated with the opening / closing lid 14. On the other hand, the reinforcing member 12
As shown in FIG. 2, the region 12 a is fixed to the inside of the container body 11 so that the end 13 a of the outlet 13 and the right end 15 a of the cut 12 b are aligned. Thereby, one end side 15 a of the region 15 penetrates through the outlet 13 and is adhered to the lower surface of the opening / closing lid 14.
Therefore, when the cuts 12b are cut off in the region 15, only the upper portion 15a of the region 15 is fixed to the back side of the opening / closing lid 14 as shown in FIG. Become. As shown in the right side of FIG. 3, the region to be cut off by cutting the reinforcing member 12 may not leave the left end side as shown in FIG. Alternatively, even after the reinforcing member 12 has been cut along the cut, the remaining reinforcing member may surround the entire periphery of the outlet 13.

FIG. 3 is an assembled perspective view showing another embodiment of the method of manufacturing the packaging container 20. As shown in FIG. The difference from the above-described embodiment is that the container main body 11 is not formed with a notch serving as a takeout port in advance and the reinforcing member 12 is not formed with a notch. Reinforcing member 12 of FIG.
The adhesive is applied to a region 12a on the right side of a virtual line L1 passing near the center of the upper surface of the reinforcing member 12 bonded to the container body 11, and the region on the upper left side of the virtual line L1 is , No adhesive is applied. Alternatively, the reinforcing member 12 may be fixed to the container body 11 by applying an adhesive to the regions 12a, 12e, and 12f in FIG.

Such a reinforcing member 12 is provided on the container body 11.
Is positioned at the position where the take-out port 13 is to be formed, and is fixed to the back side of the container main body 11, that is, the side of the container main body 11 where the contents P are stored by the adhesive in the area 12a. Thereby, the reinforcing member 12 in FIG. 3 is fixed to the container main body only on the right side of the imaginary line L1. After the reinforcing member 12 of FIG. 3 is fixed to the container main body 11 by adhesion, a cut is made in the container main body 11 by the size of the outlet 13 to form the outlet 13. As a result, the container body 11 and the reinforcing member 1 superposed and adhered thereto are overlapped.
2, a notch serving as the outlet 13 is formed at the same time. After the cuts are made in the container body 11 and the reinforcing member 12 in FIG. 3, the opening / closing lid 14 is fixed to a position on the upper surface of the container body 11 to be the takeout opening 13.

By doing so, the container body 11
When a cut is made separately for the reinforcing member 12 and
According to the above-described method, the positions of the cutouts 1 of the container body 11 were required.
It is not necessary to match the positions of the cuts formed in the reinforcing member 12 with the cuts formed for 3. Further, the container body 1 for forming the outlet 13
Since the cuts 1 and the reinforcing member 12 can be formed simultaneously, the number of steps can be reduced. Furthermore, the cuts of the container body 11 and the reinforcing member 12 can be formed in the same shape, and the cuts of the container body 11 and the cuts of the reinforcing member 12 do not shift.

Thus, as shown in FIGS. 1 and 4, when the user opens the opening / closing lid 14, at least the front end (lower end) of the free end side 15b of the sheet-shaped closing prevention member 15 is provided. It is hung down inside the container main body 11 by an amount corresponding to the vicinity 15c, and comes into contact with the upper surface of the storage item P. Then, when the user pulls out the uppermost sheet P1 of the stored material P as shown in FIG. 4, the lower end of the closing prevention member 15 which has been in contact with the upper surface thereof becomes the next stored material P2 as shown in FIG. Abuts the upper surface of the In this state, the front end (lower end) of the closing prevention member 15 receives a force indicated by an arrow A1 by being pressed against the upper surface of the container P1 with which the closing prevention member 15 comes into contact, and this force moves the opening / closing lid 14 in the direction indicated by the arrow A2, that is, opening / closing. Acts in a direction to open the lid 14.

Therefore, in the case of the packaging container 10, when the user purchases a product (for example, “wet tissue”) in which the contents P are stored, the product is attached to the upper surface of the container body 11. The label-like opening / closing lid 14 is attached to its protruding piece 14d.
, The takeout opening 13 is exposed below. At this time, the cut 12b of the reinforcing member 12 attached from the back surface of the container body 11 is also cut off at the same time, and the cut-off portion becomes the closing prevention member 15 as it is. That is, the upper surface of the upper part of the closing prevention member 15 is in the region 1 of the reinforcing member 12.
2a, an adhesive layer is formed, and is adhered and fixed to the inside of the opening / closing lid 14 as it is.
b is a free end that is not fixed. Alternatively, an adhesive may be applied to the regions 12a, 12e, and 12f in FIG.
In this case, when the reinforcing member 12 is fixed to the container body 11, the reinforcing member 1 is
Since the second regions 12e and 12f are fixed, the vicinity of the outlet can be reliably reinforced by the reinforcing member 12, and the regions 12e and 12f of the reinforcing member 12 are not left in a peeled state.

As a result, as shown in FIGS. 4 and 5,
When the opening / closing lid 14 is opened at the time of use, the lower end of the closing prevention member 15 contacts the upper surface of the storage item P. Then, the opening / closing lid 14 is held in an open state, and it is effectively prevented that the label-shaped opening / closing lid 14 is closed before one of the stored items P is taken out.
In addition, the closing prevention member 15 exhibiting such an action is
Since the reinforcing member 12 can be formed at the same time when it is formed, a complicated process is not required, and the manufacturing cost can be reduced. When the user lifts the opening / closing cover 14 in the direction of A3 shown in FIG. 5 and closes the opening / closing cover 14, the lower end side of the closing prevention member 15 moves in the direction of arrow A4 to make contact with the upper surface of the storage object P. Comes off. Therefore, the opening / closing lid 1
The packaging container 10 can be hermetically sealed by attaching the lower surface of the container 4 to the periphery of the outlet 13 of the container body 11.

FIG. 6 is an explanatory view showing a modified example in which the above-mentioned closing prevention member is constituted by using the reinforcing member 12.
The reinforcing member 12 is configured similarly to FIG. The cut 26 formed in the reinforcing member 12 has a different shape on the left end side. Particularly, the side edges 25e, 25e of the cut portion 26 are formed in a curved shape so that the end portion 15c corresponding to the length of L2 gradually becomes wider toward the outside. The closing prevention member 25 obtained by cutting off the cut 26 has an upper part 26a fixed to the inside of the opening / closing lid 14, and a lower part thereof is not fixed.

Thus, when the open / close lid is opened, the wide end portion 15c is held near the outlet of the container body, and the open / close lid is opened. That is, when the closing prevention member abuts on the container and holds the opening / closing lid 14 in an open state, the closing prevention member does not contact the container as the amount of the container stored in the container body decreases. In some cases, it may not be possible to hold the open / close lid 14 in the open state. In order to prevent this, the end portion 15c of the reinforcing member 14 is formed wider toward the outside, and the end portion 15c is brought into contact with the upper surface of the container body near the takeout port, so that even when the contents P are reduced. Thus, the closing prevention member can reliably hold the open / close lid 14 in the open state.

FIG. 7 shows a modification in which the reinforcing member 12 is formed in another shape. In the figure, the substantially right half region 12a of the reinforcing member 12 has an adhesive layer formed on the upper surface, and is adhered to the inside of the upper surface of the container body 11 as in FIG. No adhesive layer is provided on the upper surface of 12c, which is a substantially left half area of the reinforcing member 12. The closing prevention member is the same as that of the above-described embodiment, but this region 12c is formed in a curved shape so that the front end side is directed downward. As shown in FIG. 8, in the container body 11, the region 12 c of the reinforcing member extends downward and is in contact with the contents P. When removing the uppermost contents P facing the removal opening from the container body, the region 12C of the reinforcing member applies pressure to the entire contents P,
Only the contents P at the top can be taken out. That is, in the case where the contents P are stored in the container main body in a folded manner, not only one but also two sheets may be taken out when trying to take out the contents. At this time, by applying pressure to the entire contents P in the region 12C of the reinforcing member as shown in FIG. 8, the second and subsequent sheets can be kept in the container, and only the first sheet can be taken out from the outlet. .

FIG. 9 shows a second embodiment of the present invention. Since the container body 11 and the opening / closing lid 14 have substantially the same configuration as those of the first embodiment and its modified example, a duplicate description will be omitted, and differences will be mainly described. In this packaging container 30, the reinforcing member is not applied to the container body 11. For this reason, the opening / closing lid 14 is formed and fixed with the closing prevention member 35 alone. Specifically, the closing prevention member 35 is formed from a sheet-like member into a shape as shown in the figure, and is fixed to the opening / closing lid 14. This closing prevention member 35
The upper part 35a fixed to the opening / closing lid 14 is formed thin, so that it does not easily interfere with the peripheral edge of the outlet 13. Further, since the vicinity of the upper end of the closing prevention member 35 is formed to have a large area in a circular shape, it is securely adhered to the opening / closing lid 14. Further, the lower end 35b, which is the free end side of the closing prevention member 35, becomes wider toward the distal end side, and is formed, for example, in a semicircular or semielliptical shape. For this reason, it comes into contact with the outside of the outlet 13, and the opening / closing lid 14 is securely held in the open state.

Alternatively, the lower end 35b, which is the free end side of the closing prevention member 35, may be in a state of entering the inside of the outlet 13, and in this case, the lower end 35b of the closing preventing member 35 is moved from the outlet 13 to the container body. 11 does not fall outside. In this case, since the lower end 35b of the closing prevention member 35 surely comes into contact with the upper surface of the storage material P, stable performance is exhibited. Therefore, in the second embodiment, as in the first embodiment, when the opening / closing cover 14 is opened, the lower end 35b of the tip of the closing prevention member 35 abuts on the upper surface of the storage object P, and the opening / closing cover 14 Never close. In addition, the packaging container 30 of the second embodiment does not use a reinforcing member, so that the raw material cost required for manufacturing is low.

The packaging container 40 shown in FIG. 10 is a modified example of the packaging container 30 shown in FIG. 9, and is different only in that the shape of the closing prevention member 45 is different from that in FIG. This closing prevention member 45
, The lower end 45b is formed in a bar shape extending substantially horizontally. Accordingly, the lower end 45b of the closing prevention member 45 comes out of the outlet 13 and comes into contact with the upper surface of the container main body as in the case of the packaging container 30 of FIG.

As described above, according to the packaging container of each of the above-described embodiments, the lower end of the closing prevention member 15 contacts the upper surface of the storage object P or the upper surface of the container body 11 with the opening / closing lid 14 opened. In contact therewith, the open / close lid 14 can be kept open. Thus, the opening / closing lid 14 can be kept open by a simple operation, and it is not necessary to open the opening / closing lid 14 every time the contents P are pulled out one by one, so that the usability of the packaging container 10 is improved. Further, when the closing preventing member 15 is provided, it can be formed at the same time as the step of forming the reinforcing member 12, or when not forming simultaneously with the reinforcing member 12, the closing preventing member 3 can be formed.
Since it can be manufactured only by preparing a sheet-like member formed according to the shape of 5, 45 or the like, many steps are not required and the manufacturing cost is low.

In the above embodiment, the closing prevention member is attached to the inner surface of the opening / closing lid. However, the present invention is not limited to this. For example, the closing preventing member may be formed in advance integrally with the opening / closing lid. . Further, an urging means is arranged between the container accommodated in the container body and the container bottom so that the upper surface of the container is relatively raised as the remaining amount of the container decreases. Thus, the operation of the closing prevention member may be configured to be more reliable. In the above-described embodiment, the stored items P are stored in such a manner that each sheet P1 of the stored items P is folded back so as to partially overlap with the next sheet P2, and is sequentially overlapped. Each sheet may be accommodated so as not to overlap. In each of the above-described embodiments, the cutout serving as the takeout port 13 is provided in the container body 11 and the reinforcing member 12, and all the cutouts are cut off to provide the takeout port 13. However, the cutout serving as the takeout port 13 is provided. May be cut off to provide the outlet 13. For example, in FIG. 2, a cut is not provided in the region of L2 of the reinforcing member 12, but a cut is made only in the left side of the region L2,
The take-out port 13 may be configured by deleting this cut.

[0040]

As described above, according to the present invention, it is possible to provide a packaging container in which the contents can be easily taken out by holding the open state once the open / close lid is opened.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of a packaging container according to the present invention.

FIG. 2 is a partially exploded perspective view schematically showing a structure near an outlet of the packaging container of FIG.

FIG. 3 is an assembled perspective view showing an embodiment of the method for manufacturing a packaging container of the present invention.

4 is a schematic partial cross-sectional view showing, in an enlarged manner, the vicinity of an outlet of a container body of the packaging container of FIG.

5 is a schematic partial cross-sectional view showing, in an enlarged manner, the vicinity of an outlet of a container body of the packaging container of FIG. 1;

FIG. 6 is a schematic perspective view showing a modified example of a reinforcing member fixed to the container body of the packaging container of FIG.

FIG. 7 is a schematic perspective view showing another modification of the reinforcing member fixed to the container body of the packaging container of FIG.

8 is a schematic partial cross-sectional view showing, in an enlarged manner, the vicinity of a take-out opening of a container main body to which the reinforcing member of FIG. 7 is fixed.

FIG. 9 is a schematic perspective view showing a second embodiment of the packaging container according to the present invention.

FIG. 10 is a schematic perspective view showing a modification of the packaging container of FIG. 9;

FIG. 11 is a schematic partial sectional view showing, in an enlarged manner, the vicinity of a take-out opening of a conventional packaging container.

[Explanation of symbols]

10: packaging container, 11: container body, 12:
Reinforcement member, 13 ... take-out port, 14 ... open / close lid,
15: Closing prevention member, P: Contents.

Claims (6)

[Claims] 1. A bag-shaped container main body made of an airtight sheet material, and at least a part of a cut formed in advance is provided in the container main body for taking out the contents of the container main body. And an opening / closing lid which is made of a sheet piece having an area larger than the opening of the opening and which is attached to and detached from a peripheral edge of the opening, and is fixed inside the opening / closing lid. A closing prevention member interposed between the inside of the opening / closing lid and the container in a state where the opening / closing lid is opened and a part of which abuts on the container or the container body. A packaging container. 2. The packaging container according to claim 1, wherein the closing prevention member is constituted by a sheet piece mounted inside the opening / closing lid. 3. The closing prevention member has an upper part fixed to the inside of the opening / closing lid and a lower part having a free end. When the opening / closing lid is open, the free end of the closing prevention member hangs down. 2. The packaging container according to claim 1, wherein the packaging container is configured to abut on the container or the container body to prevent the opening / closing lid from closing. 3. 4. A peripheral portion of an outlet of the container body,
A sheet-like reinforcing member is fixed from the back side, and by cutting off the cut of the container body, a region where the sheet-like reinforcing member is exposed to the outside is previously partitioned by a cut, and this partitioned region is cut off. 2. The packaging container according to claim 1, wherein a cut piece obtained by performing the cutting constitutes the closing prevention member. 5. A container for fixing a sheet-like reinforcing member to a container body formed of an airtight sheet material, and for providing a take-out port for taking out an object to be housed in the container body. The same cut is formed in at least a part of the main body and the reinforcing member, and the periphery of the outlet of the container body is a sheet piece having an area larger than the opening of the outlet. Fixing the opening / closing lid to be detached, and providing a sheet-shaped closing prevention member so that an upper end side is attached to the inside of the opening / closing lid and a lower end side which is a free end can contact the container or the container body. A method for producing a packaging container, comprising: 6. A sheet-like reinforcing member is fixed to a container main body formed of an airtight sheet material, and the same cut is formed in at least a part of the container main body and the reinforcing member. By cutting off the sheet, a takeout opening for taking out the contents to be housed in the container body is formed, and a sheet piece having an area larger than the opening of the takeout opening with respect to the periphery of the takeout opening of the container body. The opening / closing lid which is detachably attached to the periphery of the take-out opening is fixed. Inside the opening / closing lid, the upper end side of the cut piece on the reinforcing member side cut along the cut is fixed, and the lower end side is fixed. A method for manufacturing a packaging container, wherein a closing prevention member is provided as a free end that can abut on the container or the container body.