JP2021020685A - Flexible container - Google Patents

Abstract

To provide a flexible container capable of more stabilizing a posture of a rod-shaped member housed in a housing pocket and suppressing deterioration of the housing pocket.SOLUTION: The present invention provides a flexible container 10 that has a bag member 1 formed in a bag shape and can store an article inside the bag member 1, in which a housing pocket 9 vertically extending so as to be capable of housing a rod-shaped member 15 that supports the bag member 1 is formed inside the bag member 1, and at least a portion of a side wall of the housing pocket 9 is formed of a sheet member 12 fixed to an inner peripheral wall of the bag member 1.SELECTED DRAWING: Figure 1

Description

The present invention relates to a flexible container.

Conventionally, a bag-shaped packaging material called a flexible container has been used for storing and transporting granules such as grains, feed and earth and sand, and liquids such as water. An example of a conventional flexible container is disclosed in Patent Document 1.

The main body of the flexible container disclosed in Patent Document 1 includes a cylindrical body portion, a bottom lid fixed to the lower end of the body portion, and a mouth portion fixed to the upper end portion of the body portion. Further, when the body is constructed of the woven fabric, the body is projected outward in a vertical cylindrical shape at four positions, and the bases on the body side of the cylindrical portion are sewn along the vertical direction. At the same time, the bottom is closed by suturing to form a bottomed cylindrical housing portion.

Further, the hollow airtight body for vertical reinforcement is flexibly formed by closing both ends of the tube, and a valve is attached to one end of the tube. A reinforcing cylinder is fitted on the outer peripheral side of the hollow airtight body. Then, a member composed of a reinforcing cylinder and a hollow airtight body is housed in the housing portion. The flexible container can be made self-supporting by inflating the hollow airtight body by injecting air from the valve.

JP-A-2002-68370

However, in the one disclosed in Patent Document 1, the accommodating portion is arranged on the outside of the body portion, and the position of the rod-shaped member (member composed of the hollow airtight body and the reinforcing cylinder) accommodated in the accommodating portion is sufficient. It is hard to say that it is stable. For example, when the contents are put into the body portion, the rod-shaped member may be tilted in a V shape in front view. If the position of the rod-shaped member is not stable, it is difficult to stabilize the posture of the flexible container.

Further, what is disclosed in Patent Document 1 is a load (body) in the circumferential direction of the body, which is sewn in the vertical direction to form the body when the contents are stored in the body. There is a possibility that the sutured portion may be torn due to the application of a load in the direction in which the portion swells. Even when such deterioration of the housing portion occurs, the position of the rod-shaped member is not stable, and it is difficult to stabilize the posture of the flexible container.

In view of the above problems, an object of the present invention is to provide a flexible container capable of more stable posture by using a rod-shaped member.

In order to achieve the above object, the present invention is a flexible container having a bag-shaped member formed in a bag shape and capable of accommodating an article inside the bag member, and a rod-shaped member supporting the bag member. A storage pocket extending vertically and vertically that can be stored is formed inside the bag member, and at least a part of the side wall of the storage pocket is formed of a seat member fixed to the inner peripheral wall of the bag member. It is a flexible container (first configuration). According to this configuration, it is possible to make the posture more stable by using the rod-shaped member.

In the first configuration, the side wall may have a first portion formed by the inner peripheral wall and a second portion formed by the sheet member (second configuration). Further, in the second configuration, the first portion and the second portion may have substantially the same circumferential length (third configuration). Further, in any of the first to third configurations, the plurality of storage pockets may be formed at substantially equal intervals in the circumferential direction of the inner peripheral wall (fourth configuration).

Further, in any of the first to fourth configurations, the mouth portion provided on the upper side of the bag member is deformed inward, and the inside of the bag member is opened upward so that an article can be stored. From the state, it is possible to make the inside closed by the mouth portion, and in the open state, the upper part of the accommodating pocket is open, and the rod-shaped member is inserted into the accommodating pocket. In the closed state, the mouth portion may be located above the storage pocket to prevent the rod-shaped member housed in the storage pocket from coming off (fifth configuration).

Further, in any of the first to fifth configurations, the seat member may be fixed to the inner peripheral wall by suturing (sixth configuration). Further, the flexible container according to the present invention is a flexible container having a bag-shaped formed bag member and capable of accommodating an article inside the bag member, and can accommodate a rod-shaped member supporting the bag member. A storage pocket extending vertically is formed, and the storage pocket is formed by projecting a part of the bag member inward and joining the protruding bases to each other (seventh configuration). ) May be used. The "inner side" in the present application refers to the inward direction of the bag shape formed by the bag member. Further, in any of the first to seventh configurations, the rod-shaped member may already be accommodated in the accommodating pocket (eighth configuration).

According to the flexible container of the present invention, it is possible to make the posture more stable by using the rod-shaped member.

It is an overall perspective view of the flexible container which concerns on one Embodiment of this invention. It is explanatory drawing about the flexible container in the state which pulled out the outlet. It is a bottom view of the flexible container which concerns on one Embodiment of this invention. It is a top sectional view of the flexible container which concerns on one Embodiment of this invention. It is a schematic top sectional view of the flexible container which concerns on 1st comparative example. It is a schematic top sectional view of the flexible container which concerns on 1st Example. It is a schematic top sectional view of the flexible container which concerns on 2nd Example. It is a schematic top sectional view of the flexible container which concerns on 3rd Example. It is a schematic top sectional view of the flexible container which concerns on 4th Example. It is a schematic diagram which shows the stacking test method.

An embodiment of the present invention will be described below with reference to the drawings. In the drawings referred to below, the upper part is shown as X1 and the lower part is shown as X2.

<1. Overall configuration of flexible container>
FIG. 1 is an overall perspective view of the flexible container 10 according to an embodiment of the present invention. The flexible container 10 shown in FIG. 1 mainly has a bag-shaped bag member 1 and a mouth portion 2 provided on the upper side of the bag member 1.

The bag member 1 has a shape in which the lower end of a square tubular shape (in the present embodiment, as an example, a square tubular shape having a horizontal cross section of 830 mm on a side) is covered with a bottom portion 1A, and the bag member 1 is made of polypropylene. It is composed of sheets and fiber fabrics made of plastic materials such as polyethylene and polyvinyl chloride. The bag member 1 is not limited to a square cylinder shape, and may have a tubular shape such as a triangle or a pentagon, or may have a cylindrical shape.

The mouth portion 2 has a square tubular shape that is open vertically including the upper opening 2A, and is made of a sheet or a fiber cloth using a plastic material such as polypropylene, polyethylene, or polyvinyl chloride. The opening of the mouth portion 2 and the opening of the bag member 1 when viewed from above have the same shape and size, and the positions of the edges of the respective openings are substantially the same when viewed from above. The lower end portion 2B of the mouth portion 2 is fitted inside the upper end portion 1B of the bag member 1 and is fixed to the upper end portion 1B by suturing or the like. The bag member 1 and the mouth portion 2 may be made of the same single sheet.

According to the flexible container 10, in a state where the opening 2A is open, an article can be thrown into the bag member 1 from the outside through the opening 2A, and the article can be accommodated inside the bag member 1. The article may be directly housed inside the bag member 1, or may be housed in an inner bag (for example, a bag made of an aluminum sheet) arranged inside the bag member 1. In addition, the article can be, for example, a granular material such as grain, feed, or earth and sand, or a liquid such as water.

After the article is housed in the bag member 1, the mouth portion 2 is deformed inward so as to crush the mouth portion 2, and the constriction of the mouth portion 2 formed thereby is bound by the tape 4. As a result, the flexible container 10 can be changed from an open state in which the inside of the bag member 1 is opened upward to accommodate articles to a closed state in which the inside of the bag member 1 is closed by the mouth portion 2.

Further, the flexible container 10 has hanging belts 3 provided corresponding to the four corners of the bag member 1. One end of the suspension belt 3 is fixed to one side surface sandwiching one corner of the upper portion of the bag member 1 from both sides, and the other end portion of the suspension belt 3 is fixed to the other side surface. The suspension belt 3 may be extended to the bottom portion 1A and fixed at two points, the side surface and the bottom portion 1A. By hooking the hanging belt 3 on a protrusion or the like, the flexible container 10 can be hung at a desired position. Further, a body-wrapping belt that limits the swelling of the bag member 1 may be provided on the outer peripheral surface of the bag member 1.

The bottom 1A of the flexible container 10 is normally closed, but as shown in FIG. 2, the discharge port 5 can be appropriately pulled out from the bottom 1A, and the article can be discharged to the outside through the discharge port 5. Note that FIG. 1 described above shows a state in which the discharge port 5 is not pulled out and the bottom portion 1A is closed (a state in which the discharge port 5 is not used). FIG. 3 shows a state in which the flexible container 10 is viewed from below with the bottom portion 1A closed.

As shown in FIG. 3, in the bottom portion 1A, notches C1 are provided so as to extend radially from each of the four corners of the square hole H1 located at the center. As a result, four tongue-shaped portions 1A1 sandwiched by the notches C1 on both sides are formed. Inside these tongue-shaped portions 1A1, the discharge port 5 is folded inside the bottom portion 1A.

When using the discharge port 5, it is possible to bend all the tongue-shaped portions 1A1 downward and pull out the discharge port 5 downward. The discharge port 5 in this state extends downward in a cylindrical shape from the central region of the bottom portion 1A, and the inside of the discharge port 5 communicates with the inside of the bag member 1, so that the discharge port 5 is housed in the bag member 1. It is possible to discharge the article through the discharge port 5. The discharge port 5 is provided with a rope 6 and a rope slider 7 (knots 6A at both ends of the rope 6 prevent the rope from falling off) that can adjust the opening state, and also for binding the discharge port 5. A tape 8 is also provided.

<2. Storage pocket configuration>
As shown in FIG. 1, the flexible container 10 according to the present embodiment has storage pockets 9 provided at locations corresponding to the four corners of the bag member 1 inside the bag member 1. The storage pocket 9 is formed in a tubular shape extending in the vertical direction from the vicinity of the lower end 2B of the mouth 2 to the vicinity of the bottom 1A, the lower side is closed by the bottom 1A, and the upper side is open. A rod-shaped member (not shown in FIG. 1) is housed inside the storage pocket 9. As a result, the article can be put into the bag-shaped member 1 in a state where the flexible container 10 is self-supporting, and it is possible to prevent the shape of the flexible container 10 from being deformed even when the flexible container 10 is stored after the article is stored.

FIG. 4 shows a state (top cross-sectional view) of the flexible container 10 in a state where the bag member 1 is horizontally cut at an intermediate position in the vertical direction, as viewed from above. As shown in FIG. 4, the four storage pockets 9 are formed at substantially equal intervals in the circumferential direction along the inner peripheral wall of the bag member 1, and the four rod-shaped members 15 extending vertically can be arranged in a well-balanced manner. It is possible. For example, the lower left storage pocket 9 shown in FIG. 4 includes a part including the corners of the first side L1 and the second side L2 of the bag member 1 sandwiching the corners of the bag member 1 from both sides, and the inner peripheral wall of the bag member 1. It has a seat member 12 fixed to and. One end of the sheet member 12 is fixed to the first side L1 and the other end is fixed to the second side L2 by suturing or the like. As a result, as shown in FIG. 4, the storage pocket 9 is formed in the shape of a square cylinder extending in the vertical direction. The sheet member 12 is made of a sheet or fiber fabric using a plastic material such as polypropylene, polyethylene, or polyvinyl chloride.

As an example, a paper tube member (paper tube) can be used as the rod-shaped member 15 housed in the storage pocket 9. As a result, the rod-shaped member 15 can be made relatively light, and the cost of the rod-shaped member 15 can be suppressed. However, the rod-shaped member 15 may be a pipe member made of a material other than paper, and may be not limited to the pipe member but may be a member having no hollow.

As described above, in the present embodiment, the storage pocket 9 is formed inside the bag member 1 by using the seat member 12. By accommodating the rod-shaped member 15 in such an accommodating pocket 9, the rod-shaped member 15 is made difficult to move in the circumferential direction of the bag member 1 (see the colored arrow in FIG. 5), and the position of the rod-shaped member 15 is stabilized. be able to. Further, when the article is housed inside the bag member 1, the rod-shaped member 15 is pushed outward (pressed toward the bag member 1 side) via the sheet member 12 by the article, and the rod-shaped member 15 is also pushed by this principle. The position of can be stabilized.

<3. About each example and comparative example of this invention>
Here, with respect to the storage pocket 9 for accommodating the rod-shaped member 15, each embodiment and comparative example of the present invention will be described with reference to FIGS. 5 to 9. It should be noted that each of FIGS. 5 to 9 is a top sectional view from the same viewpoint as in FIG. 4 (however, the illustration of the discharge port 5 is omitted). The top sectional views of FIGS. 5 to 9 are substantially the same regardless of the vertical position within the range including the storage pocket 9.

FIG. 5 is a schematic top sectional view of the flexible container according to the first comparative example. As shown in FIG. 5, in the first comparative example, the protruding portion T1 protruding outward is formed by a part of the bag member 1, and the protruding bases of the protruding portions T1 are sewn together in the entire vertical direction. The storage pocket 9 is formed by joining to form the joint portion CN1 by joining with or the like.

The first comparative example also has a configuration corresponding to the above-mentioned Patent Document 1, and the rod-shaped member 15 housed in the storage pocket 9 may easily move in the direction of the colored arrow, for example, so that the position of the rod-shaped member 15 is stable. Degree tends to be a problem. Further, in the first comparative example, if an article housed inside the bag member 1 applies an outward load (load in the direction in which the bag member 1 expands) to the inner surface of the bag member 1, the joint portion CN1 may be torn. There is. Therefore, if sufficient care is not taken so that the joint portion CN1 does not tear, the rod-shaped member 15 may deviate from the crack, for example, and the position may become unstable.

FIG. 6 is a schematic top sectional view of the flexible container according to the first embodiment. As shown in FIG. 6, in the first embodiment, the protruding portion T2 protruding inward is formed by a part of the bag member 1, and the protruding bases (root portions) of the protruding portions T2 are vertically oriented. The accommodating pocket 9 is formed by joining the joint portion CN2 by suturing or the like over the entire surface. As described above, the storage pocket 9 in the first embodiment is formed by projecting a part of the bag member 1 inward and joining the projecting bases to each other.

In the first embodiment, the protruding portion T2 plays a role similar to that of the seat member 12, and the position of the rod-shaped member 15 can be stabilized by the above-mentioned principle. Therefore, as compared with the first comparative example, the stability of the position of the rod-shaped member 15 housed in the storage pocket 9 is improved. In the first embodiment, even when an article housed in the bag member 1 applies an outward load (a load in the direction in which the bag member 1 expands) to the inner surface of the bag member 1, the joint portion CN2 is torn. It is desirable to be careful not to (for example, make the suture strength sufficiently high).

FIG. 7 is a schematic top sectional view of the flexible container according to the second embodiment. In this embodiment, the storage pocket 9 is formed by joining the corners of the bag member 1 with both ends of the sheet member 12 aligned from the inside of the bag member 1 by suturing or the like.

Further, FIG. 8 is a schematic top sectional view of the flexible container according to the third embodiment. In this embodiment, the storage pocket 9 is fixed to a part of the bag member 1 that sandwiches the corners of the bag member 1 from both sides, including the corners of the first side L1 and the second side L2, and the inner peripheral wall of the bag member 1. It has the seat member 12 and the seat member 12. One end of the sheet member 12 is fixed to the first side L1 and the other end is fixed to the second side L2 by suturing or the like.

Further, FIG. 9 is a schematic top sectional view of the flexible container according to the fourth embodiment, which is equivalent to that shown in FIG. The difference between the configuration shown in FIG. 8 and the configuration shown in FIG. 9 is the first portion 91 and the second portion 92 that form the side wall of the storage pocket 9. The first portion 91 includes the inner peripheral wall of the part of the first side L1 and the inner peripheral wall of the part of the second side L2. The second portion 92 is formed by the sheet member 12. Then, in the configuration of FIG. 8, the circumferential length of the second portion 92 is longer than the circumferential length of the first portion 91. On the other hand, in the configuration of FIG. 9, the circumferential length of the second portion 92 is substantially the same as the circumferential length of the first portion 91.

In any of the configurations of FIGS. 6 to 9, the storage pocket 9 is formed inside the bag member 1, and the movement of the rod-shaped member 15 as shown by the colored arrow in FIG. 5 is suppressed. Further, when the article is housed inside the bag member 1, the rod-shaped member 15 is pressed against the bag member 1 side via the sheet member 12 or the protruding portion T2 by the article, and the movement of the rod-shaped member 15 is further suppressed. To. Therefore, the position of the rod-shaped member 15 is stable, and it is easy to stabilize the posture of the flexible container.

Further, in any of the configurations of FIGS. 7 to 9, the seat member 12 is fixed to the inner peripheral wall of the bag member 1 to form the storage pocket 9. Therefore, even if an article housed in the bag member 1 applies an outward load (load in the direction in which the bag member 1 expands) to the inner surface of the bag member 1, a portion corresponding to the joint portion in Comparative Example 1 (the load). Since there is no portion (part that is considered to be easily torn), it is possible to prevent the rod-shaped member 15 from deviating from the crevice and becoming unstable in position.

In each of the configurations shown in FIGS. 7 to 9, at least a part of the side wall of the storage pocket 9 is formed by the seat member 12 fixed to the inner peripheral wall of the bag member 1. In the configuration of FIG. 7, the entire side wall of the storage pocket 9 is formed by the seat member 12. Further, the configuration of FIGS. 8 and 9 is such that the side wall of the accommodating pocket 9 has a first portion 91 formed of the inner peripheral wall of the bag member 1 and a second portion 92 formed of the seat member 12. is there.

In particular, in the configuration of FIG. 9, the circumferential lengths of the first portion 91 and the second portion 92 are substantially the same. In other words, approximately half the area of the side wall of the accommodating pocket 9 is composed of the first portion 91 (inner peripheral wall of the bag member 1). As a result, as shown in FIG. 1, the storage pocket 9 can be easily opened with the bag member 1 opened, and the rod-shaped member 15 can be easily inserted into the storage pocket 9. Further, the rod-shaped member 15 can be brought into contact with the inner peripheral wall of the bag member 1 as much as possible to make it difficult to move freely, and the position of the rod-shaped member 15 can be made more stable. Further, since the amount of the seat member 12 required for forming the accommodation pocket 9 for accommodating the rod-shaped member 15 having the same size can be further reduced, it is advantageous in terms of cost reduction and weight reduction.

<4. Prevention of rod-shaped members coming off>
In each of the above-described embodiments of the present invention, the following can be said about the prevention of the rod-shaped member 15 from coming off. As shown in FIG. 1, the flexible container 10 is in an open state in which the inside of the bag member 1 is opened upward and can accommodate articles when the opening 2A is open. In this open state, the upper part of the accommodating pocket 9 is open, and the rod-shaped member 15 can be inserted into the accommodating pocket 9 from above. Then, the flexible container 10 is in a closed state in which the inside of the bag member 1 is closed by the mouth portion 2 by crushing (deforming inwardly) the mouth portion 2 as described above. In this closed state, the crushed mouth portion 2 is located above the storage pocket 9, and the rod-shaped member 15 housed in the storage pocket 9 is prevented from coming out. That is, in the present embodiment, when the article is housed and the bag member 1 is closed, the rod-shaped member 15 can be prevented from coming off at the same time.

In this respect, for example, when the configuration shown in FIG. 5 is adopted, since the storage pocket 9 is outside the mouth portion 2 when viewed upward, the inside of the bag member 1 is closed by the mouth portion 2 as a closed state. However, the upper part of the storage pocket 9 is not blocked by the mouth portion 2. Therefore, in this case, in order to prevent the rod-shaped member 15 from coming out of the storage pocket 9, it is necessary to close the upper part of the storage pocket 9 by another means. In the present embodiment, as described above, since the storage pocket 9 can be closed only by closing the bag member 1, such another means is unnecessary, and the storage pocket 9 may be forgotten to be closed. hard.

<5. Usefulness confirmation test>
Further, the applicant of the present application conducted the test described below in order to confirm the usefulness of the flexible container of the present invention.

As the first test, in the flexible container according to the comparative example of the configuration corresponding to the configuration of FIG. 5 described above and the flexible container according to the present invention having the configuration corresponding to the configuration of FIG. 9 described above, the bag member is preliminarily used. A test was conducted in which the contained inner bag was filled with water. When filling with water, a paper tube (rod-shaped member) was stored in the storage pocket in advance.

As a result, in the flexible container according to the comparative example, when the paper tube was filled with water, the paper tube became a V shape in front view, and the paper tube popped out from the storage pocket. On the other hand, in the flexible container according to the present invention, the posture of the paper tube was stable even when filled with water, and the paper tube did not pop out.

Further, as a second test, as outlined in FIG. 10, the first table D1 is placed on the ground G, and the first flexible container 101 is placed on the first table D1. A stacking test was conducted in which the second stand D2 was placed on the flexible container 101 of 1 and the second flexible container 102 was placed on the second stand D2. In this test, a comparison was made between the case where the first flexible container 101 and the second flexible container 102 were the flexible container according to the above comparative example and the case where the flexible container according to the present invention was used. The flexible container was filled with water.

As a result, in the case of the flexible container according to the comparative example, both the first flexible container 101 and the second flexible container 102 wobbled even if the second table D2 was touched slightly in the horizontal direction. In the case of the flexible container, even if the second base D2 was moved in the horizontal direction, the first flexible container 101 and the second flexible container 102 did not move as if they were integrated. From the above results, it can be said that the flexible container according to the present invention has a high effect of stabilizing the posture by using the rod-shaped member.

<6. Others>
In addition to the above embodiments, the configuration of the present invention can be modified in various ways without departing from the gist of the invention. That is, it should be considered that the above-described embodiment is exemplary in all respects and is not restrictive, and the technical scope of the present invention is shown by the scope of claims rather than the description of the above-described embodiment. It should be understood that it includes all changes that fall within the meaning and scope of the claims.

The flexible container of the present invention may be distributed in a state where the rod-shaped member is not housed, or may be distributed in a state where the rod-shaped member is housed. The work of accommodating the rod-shaped member in the accommodating pocket can be performed at any time until the article is accommodating in the flexible container.

1 Bag member 1A Bottom 2 Mouth 2A Opening 3 Suspended belt 4 Tape 5 Discharge port 6 Rope 7 Rope slider 8 Tape 9 Storage pocket 91 1st part 92 2nd part 10 Flexible container 12 Sheet member 15 Rod-shaped member T1, T2 Part CN1, CN2 Joint 101 First flexible container 102 Second flexible container D1 First stand D2 Second stand G Ground

Claims (8)

A flexible container having a bag-shaped bag member and capable of accommodating articles inside the bag member.
Vertically extending storage pockets capable of accommodating the rod-shaped member supporting the bag member are formed inside the bag member.
A flexible container in which at least a part of the side wall of the storage pocket is formed of a seat member fixed to the inner peripheral wall of the bag member. The flexible container according to claim 1, wherein the side wall has a first portion formed of the inner peripheral wall and a second portion formed of the sheet member. The flexible container according to claim 2, wherein the first portion and the second portion have substantially the same circumferential length. The flexible container according to any one of claims 1 to 3, wherein the plurality of storage pockets are formed at substantially equal intervals in the circumferential direction of the inner peripheral wall. The mouth portion provided on the upper side of the bag member is deformed inward, and the inside of the bag member is opened upward from an open state in which an article can be accommodated, to a closed state in which the inside is closed by the mouth portion. It is possible to
In the open state, the upper part of the storage pocket is open, and the rod-shaped member can be inserted into the storage pocket.
The method according to any one of claims 1 to 4, wherein in the closed state, the mouth portion is located above the storage pocket to prevent the rod-shaped member housed in the storage pocket from coming off. Flexible container. The flexible container according to any one of claims 1 to 5, wherein the sheet member is fixed to the inner peripheral wall by suturing. A flexible container having a bag-shaped bag member and capable of accommodating articles inside the bag member.
An vertically extending storage pocket that can accommodate a rod-shaped member that supports the bag member is formed.
The storage pocket
A flexible container formed by projecting a part of the bag member inward and joining the projecting bases to each other. The flexible container according to any one of claims 1 to 7, wherein the rod-shaped member is already stored in the storage pocket.