CN113260583B - flexible container - Google Patents

Abstract

A flexible container which contains a content and which is taken out by penetrating a bag breaking tool from the outside is provided with an outer bag and an inner bag. The outer bag has a bottom surface portion. An inner bag is received within the outer bag and is internally filled with the contents. The outer bag is provided with a marking part on the outer surface of the bottom surface part. The marking portion indicates a position where the bag-breaking tool penetrates.

Description

flexible container

Technical field

The present invention relates to flexible containers.

Background technique

Flexible containers are commonly used to store and transport various contents such as powders, grains, vegetables, etc. There are various types of flexible containers, but among them there is a type of flexible container in which a content filling port is formed in the upper part and a content discharge port is formed in the lower part (see Patent Documents 1 to 3). This type of flexible container is suspended when opened, and the contents are taken out from the lower discharge port.

The flexible containers in Patent Documents 1 to 3 have a double-layer structure, and the flexible containers have an inner bag filled with contents and an outer bag accommodating the inner bag. A lower opening is formed on the bottom surface of the outer bag. The lower opening is covered by a garland-shaped cover except when it is opened. The cover is continuous with the edge defining the lower opening on the bottom surface. In addition, the garland-shaped cover is called a "lower outer cover" (16) in Patent Document 1, a "cover pressing piece" (16a-16d) in Patent Document 2, and a "cover pressing piece" (16a-16d) in Patent Document 3. It is called the "Chrysanthemum petal" (18). The garland-shaped cover includes parts corresponding to a plurality of petals, and the lower opening is closed by tying a rope passing through the center of these parts and arranging these parts radially to form a garland in the same plane as the bottom part. . On the other hand, when opening, the rope is loosened so that the part corresponding to the petal hangs downward, and the lower opening is opened. Then, the contents are taken out through the discharge port corresponding to the lower part of the inner bag pulled out from the lower opening.

Prior technical documents

patent documents

Patent Document 1: Japanese Utility Model Registration No. 3191096

Patent Document 2: Japanese Patent Application Publication No. 2004-26202

Patent Document 3: Japanese Patent Application Publication No. 2016-33022

Contents of the invention

(The problem to be solved by the invention)

The above flexible container requires the following operations: for example, when opening the bag, untie the rope that fixes the garland-shaped lid to open the lid, pull out the discharge port of the inner bag, and heat-seal the front end of the discharge port. Partially cut off and untie the rope binding the exit. However, this bag opening operation is not necessarily easy for the operator, and often becomes a burden in terms of time. Therefore, there is a demand for flexible containers that are easy to handle and have good workability.

An object of the present invention is to provide a flexible container that can improve workability.

(Technical solutions to solve problems)

One aspect of the present invention relates to a flexible container that accommodates contents and takes out the accommodated contents by penetrating a bag breaking tool from the outside. The flexible container is provided with: an outer bag having a bottom surface; and The inner bag is accommodated in the outer bag and filled with the content inside. The outer bag has a marking portion on the outer surface of the bottom portion, and the marking portion indicates the position where the bag breaking tool is inserted. .

In the flexible container according to the above aspect, the logo portion may be a pattern displayed on the outer surface of the bottom portion.

In the flexible container according to the above aspect, the identification portion may be a notch hole formed by partially cutting off the bottom portion.

According to the above configuration, since the bag breaking tool does not come into contact with the outer bag, the load placed on the bag breaking tool can be reduced. In addition, according to this configuration, fragments of the outer bag are less likely to occur when the bag is opened. Therefore, it is possible to suppress the possibility that fragments of the outer bag will be mixed as foreign matter in the contents taken out from the flexible container. Due to the above reasons, the workability of handling the flexible container is improved.

In the flexible container according to the above aspect, the flexible container may further include a sagging suppression member configured to suppress the inner bag from sagging from the notch hole.

In the flexible container according to the above aspect, the sagging suppressing member may include a covering member covering at least a part of the notch hole.

In the flexible container according to the above aspect, the covering member may include a sheet member provided between the bottom portion and the inner bag.

In the flexible container related to the above aspect, the outer bag and the inner bag may be at least partially fixed to each other.

In the flexible container according to the above aspect, the inner bag may be filled with water-absorbent resin particles as the content.

(invention effect)

According to the present invention, the flexible container can be easily and reliably broken by aligning the bag breaking tool with respect to the marking portion provided on the bottom surface of the flexible container and penetrating the marking portion, thereby shortening the bag opening operation time of the flexible container. Shortened and workability improved.

Description of drawings

FIG. 1 is a side view showing a state in which a flexible container according to an embodiment of the present invention is deployed.

Figure 2 is a perspective view of the inner bag.

Figure 3 is a top view of the flexible container.

Figure 4 is a bottom view of the flexible container.

FIG. 5 is a diagram showing a state in which a flexible container is suspended from above using a suspension tool.

Fig. 6 is a diagram explaining the bag opening operation of the flexible container.

FIG. 7A is a bottom view according to a modified example.

FIG. 7B is a bottom view according to another modification example.

FIG. 7C is a bottom view according to yet another modification example.

FIG. 8A is a perspective view of the inside of the outer bag according to the modified example.

8B is a cross-sectional view of the vicinity of the bottom portion of the outer bag according to another modification.

FIG. 8C is a bottom view of the outer bag according to another modified example.

FIG. 9A is a cross-sectional view of a sheet member according to a modified example.

FIG. 9B is a cross-sectional view of a sheet member according to another modification example.

10 is a cross-sectional view showing the structure near the lower end portion of the side portion of the outer bag.

Detailed ways

Hereinafter, a flexible container according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a side view of a flexible container (hereinafter, may be simply referred to as a container) 1 according to this embodiment. Hereinafter, for convenience of explanation, the up-down direction in FIG. 1 will be referred to as "up-down", and the description will be based on this.

(1. Overall composition of flexible container)

The flexible container 1 is a container for containing contents, and is used for storing and transporting the contents. As the name suggests, the flexible container 1 is made of soft material. Therefore, the container 1 expands three-dimensionally when filled with contents, but can be folded flatly when empty.

The type of content filled in the container 1 is not particularly limited, and is usually powder, grains, vegetables, etc. These contents may be items whose performance is easily affected by moisture in the air. Among them, water-absorbent resin particles are particularly preferred.

The flexible container 1 has a double-layer structure and is provided with an outer bag 2 and an inner bag 3. The inner bag 3 is accommodated in the outer bag 2. The content is filled inside the inner bag 3 . The outer bag 2 is mainly made of material using high-strength cloth. The outer bag 2 has a main body 20 that covers most of the inner bag 3 . The main body 20 has a top surface 21 , a bottom surface 22 , and a side surface 23 . In this embodiment, the top surface part 21 and the bottom surface part 22 are square shapes. That is, the main body portion 20 of the outer bag 2 has a substantially rectangular parallelepiped shape, and the side portion 23 includes four side surfaces of a rectangular shape. The side portion 23 is provided with a pocket 23 a formed of a transparent material into which labels and the like are inserted. An opening (hereinafter referred to as an upper opening) 21a is formed in the center of the top surface portion 21 . In addition, the outer bag 2 has a marking portion 22a on the outer surface of the bottom portion 22 of the outer bag. In this embodiment, a cutout hole is used as the marking portion 22a. Hereinafter, the notch hole is given the same reference numeral as the marking portion, and is called notch hole 22a. The detailed structure of the notch hole 22a will be described below.

The inner bag 3 is mainly made of a material such as a resin film, has a bottom portion 32 and a side portion 33, and has a substantially rectangular parallelepiped shape with an upper portion open. The upper part of the inner bag 3 extends upward above the top surface 21 through the upper opening 21a, and forms a filling opening 31 for contents. The contents are filled into the inner bag 3 through the filling mouth 31 . That is, the filling port 31 forms the insertion path R1 for filling the inner bag 3 with contents.

The entire length of the inner bag 3 in the vertical direction is longer than the entire length of the outer bag 2 in the vertical direction. As shown in FIG. 2 , the bottom portion 32 of the inner bag 3 has a rectangular shape, and the extended end portions 32 a respectively extend from two opposite sides of the bottom portion 32 toward the outside of the inner bag 3 . The extended end portion 32a can be fixed by fixing means such as sewing while being sandwiched between the bottom portion 22 and the side portion 23 of the outer bag 2 . That is, the outer bag 2 and the inner bag 3 may be fixed to each other at least partially. By fixing the outer bag 2 and the inner bag 3 (especially the bottom portion 32 and/or the side portions 33 near the bottom portion 32 of the outer bag 2 and the inner bag 3 are fixed), the inner bag 3 can be easily prevented from sagging from the notch hole 22a. In addition, when the bottom portion 32 of the inner bag 3 is filled with content, the bottom portion 32 of the inner bag 3 is appropriately tightened, so that the bag breaking tool 90 can be easily penetrated. Furthermore, "the inner bag 3 hangs down from the notch hole 22a" means that when the container 1 is lifted, the bottom surface portion 32 of the inner bag 3 protrudes downward from the bottom surface portion 22 of the outer bag 2 through the notch hole 22a, and "sag is suppressed" means This means not only completely preventing sagging, but also suppressing the protrusion of the bottom surface 32 of the inner bag 3 below the bottom surface 22 of the outer bag 2 to an extent that does not affect the actual use of the flexible container 1 .

In addition, by fixing the extended end portion 32a of the inner bag 3 to the outer bag 2, the inner bag 3 becomes less likely to be broken, and the airtightness of the inner bag 3 can be further ensured. Therefore, the inner bag 3 may preferably be filled with contents whose properties are easily affected by moisture in the air (for example, water-absorbent resin particles).

In this embodiment, as shown in the cross-sectional view of FIG. 10 , the side portion 23 of the outer bag 2 is folded inward, and the bottom portion 22 of the outer bag 2 and the extended end portion 32 a of the inner bag 3 are sandwiched together at the folded portion. Then sew these parts together at the positions shown by the dotted lines, thereby fixing the outer bag 2 and the inner bag 3 to each other. Furthermore, the end of the sheet member 50 described later may be disposed between the extended end 32a and the bottom surface 22, and may be fixed together with other parts. In this way, by sharing the fixing means (sewing in this embodiment) of the outer bag 2, the inner bag 3, and the sheet member 50, the fixed portions are made stronger and less likely to deform, and the fixed portion of the sheet member 50 becomes Hard to break. In addition, by covering the bottom surface 32 of the inner bag 3 with the sheet member 50, the bottom surface of the flexible container 1 after filling with contents is kept smoother, and the bag breaking tool 90 described later can be easily penetrated at a target position.

The outer bag 2 has a cylindrical filling flap 25 extending upward from the upper opening 21 a of the top portion 21 . The filling port cover 25 is a cover that covers the filling port 31 protruding from the top surface portion 21 through the upper opening 21 a from the outside. The filling flap 25 is fixed to the top portion 21 by sewing or the like, and is configured to stand up from the vicinity of the edge defining the upper opening 21a. The cross-sectional shape of the filling cap 25 is a circle having approximately the same size as the upper opening 21a.

The opening area of the upper part of the inner bag 3 (filling port 31) is larger than the opening area of the filling port lid 25. Therefore, when the filling opening 31 is contained in the outer bag 2, the filling opening is wrinkled and squeezed. As described above, since the filling port 31 and the filling port cap 25 together form a filling port, the filling port 31 and the filling port cap 25 may be collectively referred to as the filling port P1 below.

(1-1. Structure near the filling port)

The structure near the filling port P1 will be described below. The filling port P1 is closed by a closing bag member that closes the input path R1. An example of the bag-closing member is a binding tool 45 for binding the filling port P1. In this embodiment, as shown in FIG. 1 , the binding tool 45 is fixed on the outer surface of the filling cap 25 . The binding tool 45 is a rope-like member. The binding tool 45 is attached near the center of the filling port cover 25 in the vertical direction by sewing or the like so as to extend in the horizontal direction without binding the filling port P1.

When closing the input path R1, first, the filling port 31 and the filling port cover 25 covering the filling port are pressed together to close the input path R1. Thereafter, the binding tool 45 is wound around the filling port P1 to maintain this squeezed state. At this time, the binding tool 45 is tied with a bow tie or the like. More specifically, it may be configured such that the filling port 25 and the filling port 31 are tied together in a knot, and the filling port 31 protrudes from the filling port 31 so that the tip of the filling port 31 faces downward. Fold back to one side, and tie the folded portion of the filling opening 31 and the filling opening cover 25 with a bow tie.

The outer bag 2 has a garland-shaped cover (hereinafter referred to as a garland cover) 24 for opening and closing the upper opening 21a. FIG. 3 is a top view of the outer bag 2 with the wreath cover 24 closed. The garland cover 24 includes a plurality of petal-shaped parts (hereinafter referred to as petal parts) 24a. These petals 24a are arranged radially around the central axis A1 in the closed state of the garland cover 24, and cover the upper opening 21a except for the central portion of the upper opening. The petal portions 24a have the same shape as each other, each having a substantially trapezoidal shape, but the bottom edge thereof is an arc shape corresponding to the outline of the upper opening 21a. That is, the bottom edge of the petal portion 24a is continuous at a portion outside the top portion 21 and the edge defining the upper opening 21a.

The garland cover is provided with an opening and closing member. In the present embodiment, the opening and closing member is composed of a rope threading channel and a rope inserted into the rope threading channel. Specifically, a cord passage extending in the circumferential direction with respect to the central axis A1 is formed near the inner end of the petal portion 24a, and the cord 24b is inserted into these passages. Both ends of the rope 24b that are not inserted into the rope passage are wound around the sliding body 24c. Then, the garland cover 24 is opened and closed by moving the sliding body 24c along the bundle of the two ropes 24b. Specifically, when the sliding body 24c is moved to make the loop formed by the rope 24b smaller, that is, when the rope 24b is tied, the petal portion 24a is tilted to expand in the same plane as the top surface portion 21, becoming as shown in Fig. 3 Disabled. On the other hand, when the sliding body 24c is moved to enlarge the loop formed by the rope 24b, that is, when the rope 24b is loosened, as shown in FIG. 1, the petal part 24a can stand upright in the up-down direction.

As shown in FIG. 1 , the filling cap 25 is arranged inside the wreath cover 24 . That is, the garland cover 24 is fixed to the top surface part 21 so as to surround the filling opening cover 25 from the outside. In addition, the inner cover 4 is arranged outside the filling cap 25 and inside the wreath cover 24 . The inner cover 4 is also surrounded from the outside by the garland cover 24 . The filling port P1 bound by the binding tool 45 is appropriately folded and accommodated inside the garland cover 24, and then the garland cover 24 is closed. At this time, the inner cover 4 covers the filling port P1 from above inside the garland cover 24 . Furthermore, the garland cover 24 does not have to be completely closed as shown in FIG. 3 . That is, the filling port P1 may partially protrude from the opening 24d formed in the center part of the garland cover 24.

(1-2. Structure near the bottom surface)

Next, the structure near the bottom surface of the container 1 will be described. The bottom surface of the container 1 is configured such that when the container 1 is opened, the bag breaking tool 90 disposed below the container 1 penetrates the bottom surface of the container 1 . FIG. 4 shows a bottom view of the container 1 according to this embodiment. The outer bag 2 has a logo portion 22a on the outer surface of the bottom portion 22 . The mark portion 22a indicates the position where the bag breaking tool 90 penetrates. Therefore, the logo portion 22 a is formed to be distinguished from other portions of the outer surface of the bottom portion 22 . In the present embodiment, the index portion 22a is an opening (notch hole) formed by cutting out the central portion of the bottom portion 22 . In this embodiment, the notch hole 22a is circular. Incidentally, although the upper opening 21a and the cutout hole 22a do not originally appear in the side view of FIG. 1, their positions are hatched for reference. The main body part 20, the top surface part 21, the bottom surface part 22, the upper opening 21a, and the notch hole 22a are coaxially arrange|positioned, and their common central axis is denoted by the code|symbol A1 below.

The container 1 of this embodiment is provided with a sagging suppression member for preventing the inner bag 3 filled with contents from sagging from the notch hole 22 a and damaging the inner bag 3 . The sagging suppressing member may include, for example, a covering member covering at least a part of the notch hole 22a. The locations where the covering member is provided are the outer surface and the inner surface of the bottom portion 22 of the outer bag 2, the outer surface and the inner surface of the side portion 23, the outer surface of the inner bag 3, and between the outer bag 2 and the inner bag 3, etc. appropriately selected according to the implementation. In this embodiment, the sheet member 50 is used as the covering member (sag suppressing member). Specifically, the container 1 according to this embodiment further includes a sheet member 50 provided between the bottom portion 22 of the outer bag 2 and the bottom portion 32 of the inner bag 3 and covering the notch hole 22a. In the present embodiment, the sheet member 50 has a rectangular shape slightly smaller than the bottom portion 22 and covers the entire notch hole 22 a from the inside of the outer bag 2 . That is, in FIG. 4 , what is exposed from the notch hole 22 a is not the inner bag 3 but the sheet member 50 . In this way, since the notch hole 22a is covered with the sheet member 50, the inner bag 3 is not exposed from the notch hole 22a and becomes difficult to hang down. Furthermore, although the sagging can be reduced by fixing the outer bag 2 and the inner bag 3 around the bottom portion 32 as described above, the inner bag 3 is required to be soft, so its thickness is limited and it is easy to stretch. It is difficult to adequately suppress sagging with this method. Therefore, even if the outer bag 2 and the inner bag 3 are fixed, it is preferable to provide a sagging suppressing member such as the sheet member 50 .

Considering the convenience of positioning the bag breaking tool 90, the area of the notch hole 22a is preferably 5% or more, 10% or 15% of the area of the bottom portion 22 of the outer bag 2 (including the area of the notch hole 22a). In addition, the area of the notched hole 22a is preferably 30% or less, 25% or less, or 20% or less of the area of the bottom portion 22 of the outer bag 2 (including the area of the notched hole 22a), so that sagging of the inner bag 3 can be easily suppressed.

The sheet member 50 not only prevents the inner bag 3 from sagging from the notch hole 22a due to the mass of the contents when the container 1 is transported or suspended, but also prevents the inner bag 3 from being exposed from the notch hole 22a. The sheet-like member 50 is preferably made of a material that has a degree of flexibility that does not hinder the flexibility of the outer bag 2 and does not undergo greater deformation than the inner bag 3 . In addition, when the container 1 is opened, the sheet member 50 is cut by the bag breaking tool 90 together with the inner bag 3 . Therefore, the sheet member 50 is formed from a material that can be cut by the bag breaking tool 90 .

The material constituting the sheet member 50 can be appropriately changed depending on the contents of the container 1 and the selected inner bag 3, but it is preferably used when the contents are water-absorbent resin particles and can be easily cut with the bag breaking tool 90. A material that has a certain degree of impermeability underneath so that the physical properties of the contents do not change. Examples of such materials include synthetic resins, specifically polyolefin resins such as polyethylene, polypropylene, cyclic olefins, copolymers including polyethylene, etc.; polyester resins such as polyterephthalene. Ethylene glycol formate and polylactic acid, etc.; polyamide resin; polystyrene resin, etc. As the material of the sheet member 50, polyolefin resin is preferable, and polyethylene or polypropylene is more preferable. When the sheet member 50 is made of an easily tearable material, there is a possibility that a large hole may be accidentally formed in the sheet member 50 due to damage from the outside, and as a result, the inner bag 3 exposed from the hole may be broken. However, if If the sheet member 50 is made of polyethylene or polypropylene (especially polyethylene), even if a small damage occurs on the sheet member 50, it will not cause a large hole, and the inner bag 3 can be prevented from being broken.

In addition, the thickness of the sheet member 50 can be appropriately selected according to the contents of the container 1 . When the content is water-absorbent resin particles, the thickness of the sheet-like member 50 is preferably within the following range: it can be easily cut by the bag breaking tool 90 , the sagging of the inner bag 3 can be sufficiently suppressed, and the physical stability of the water-absorbent resin particles can be ensured. A certain degree of impermeability that does not change the property. In view of these considerations, the lower limit of the specific thickness of the sheet-like member 50 is, for example, 50 μm, preferably 80 μm, more preferably 100 μm, particularly preferably 120 μm, and the upper limit of the thickness is, for example, 500 μm, preferably 300 μm, more preferably 200 μm. .

(1-3. Other components)

The container 1 further includes a plurality of hooked parts 35b fixed to the outer bag 2 . The hooked member 35b is a member for being hooked on the suspension tool 7 that suspends the flexible container 1 from above. The hooked member 35 b corresponds to the upper portion of a rope-like member (hereinafter referred to as a frame rope) 35 arranged near the center in the width direction of the side portion 23 of the outer bag 2 . More specifically, as shown in FIG. 1 , the end portions 35 a of the two frame cords 35 are overlapped with each other and fixed by sewing or the like at the upper portion of the pocket 23 a near the center in the width direction of the side portion 23 . The upper part of one frame rope 35 spans the four corners of the top surface part 21, and the end part 35a is fixed to the adjacent side part 23 (refer FIG. 3). Therefore, the upper part of the frame rope 35 is formed to maintain a loop shape, and this upper part becomes the hooked member 35b.

FIG. 5 shows the state of the container 1 suspended from above by hooking the hooked member 35 b to the hanging tool 7 . As shown in FIG. 5 , for example, the flexible container 1 can be suspended from above by hooking each of the hooking parts 35 b on the four suspension tools 7 lowered from above. Furthermore, the hanging tool 7 is usually a hook.

(2. How to use flexible containers)

Next, a method of using the above-mentioned flexible container 1 will be described. Hereinafter, a method of filling the empty flexible container 1 with contents and a method of opening the flexible container 1 will be described in sequence.

(2-1. How to fill flexible containers)

First, the outer bag 2, the inner bag 3, and the sheet member 50 are prepared. The sheet member 50 is accommodated in the outer bag 2 along the bottom surface 22 and covers the notch hole 22 a from the inside. Next, the inner bag 3 is accommodated in the outer bag 2 . The inner bag 3 is accommodated with the bottom portion 32 along the upper surface of the sheet member 50 and the side portion 33 along the inner surface of the side portion 23 . Then, the upper filling opening 31 of the inner bag 3 is inserted into the upper opening 21 a of the top surface 21 of the outer bag 2 and the filling opening 25 , and is pulled out so as to be slightly exposed from the upper end of the filling opening 25 . Thereby, the filling port P1 is formed by the filling port 31 and the filling port cover 25 which protrude upward from the top surface part 21 through the upper opening 21a.

Then, as described above, the prepared empty flexible container 1 is filled with the contents. First, the empty flexible container 1 is placed under a device such as a hopper for supplying the contents (hereinafter referred to as a "supply device") with the top portion 21 facing upward. Next, each of the hooked parts 35b of the outer bag 2 is hooked on a hanging tool such as a hook of the supply device, and the flexible container 1 is suspended from above. Then, the sliding body 24c is released, the garland cover 24 is opened, the inner cover 4 is also opened, and the filling port P1 is opened into a cylindrical shape as large as possible. Next, the discharge port of the supply device is inserted into the input path R1. At this time, the filling port P1 can be fixed on the supply device using a clamp or the like so as to cover the discharge port of the supply device. Thereby, the input path R1 is widely opened upward, that is, toward the discharge port for discharging the contents in the supply device. Then, by opening the discharge port of the supply device, the contents are injected from the supply device into the inner bag 3 via the input path R1.

After filling the contents, the filling port P1 is closed. Specifically, the filling port P1 is contracted to close the input path R1 formed inside the filling port 31 . Then, the binding tool 45 is tightly wrapped around the filling port so as to surround the elongated filling port P1 from the outside, and then the binding tool 45 is tied to lock the wrapping state. Next, fold the filling port P1, place the inner cover 4 on the filling port, and then close the garland cover 24. Thereby, the upper opening 21a is closed, and the filling port P1 is accommodated inside the garland cover 24. Through the above operations, the flexible container 1 containing the contents is manufactured.

Flexible containers containing the contents are kept in appropriate storage locations and transported as necessary. When moving the flexible container 1, the flexible container can be placed on a pallet and transported by a transport device such as a forklift. In addition, a transport device such as a crane having a suspension tool such as a hook may be used. That is, the flexible container 1 can be moved easily by driving the conveyance device with the hooked member 35b hooked on the suspension tool of the conveyance device.

(2-2. How to open flexible containers)

Next, a method of opening the flexible container 1 containing contents will be described with reference to the example shown in FIG. 6 . First, the flexible container 1 containing the content is placed above a device such as a hopper to which the content is supplied (hereinafter referred to as the supplied device 91 ) with the bottom portion 22 facing downward. The configuration method of container 1 is not particularly limited. For example, the container 1 can be lifted up while the hooked parts 35b of the container 1 are respectively hooked on four movable hanging tools 7a lowered from above, and then the hanging tools 7a can be moved, and the container 1 can be supplied. The container 1 is arranged above the device 91 . In the example shown in FIG. 6 , the hanging tool 7 a can move in the vertical direction, the left-right direction and the paper direction of FIG. 6 .

The bag breaking tool 90 is fixed above the center part of the supplied device 91 shown in FIG. 6 . The bag breaking tool 90 is usually a blade and is fixed with the blade tip facing upward. The bag breaking tool 90 is configured to penetrate both the logo portion of the outer bag 2 and the bottom portion 32 of the inner bag 3 . In this embodiment, the bag breaking tool 90 is configured to penetrate the sheet member 50 and the bottom portion 32 of the inner bag 3 together. Therefore, the container 1 is positioned so that the tip of the bag breaking tool 90 is located inside the circular peripheral edge of the bottom portion 22 of the outer bag 2 that defines the notch hole 22 a (for reference, the position of the notch hole 22 a is Indicated by shading in Figure 6). In other words, the container 1 is positioned so that the bag breaking tool 90 penetrates the portion of the sheet member 50 exposed from the notch hole 22 a. The positioning of the container 1 can be performed visually by an operator while confirming the position of the notch hole 22a as the marking portion, for example. In addition, it may be performed while confirming the image captured by the camera installed near the bag breaking tool 90 using a remote monitor.

Next, all the hanging tools 7 a are moved downward in FIG. 6 so that the bottom surface 32 of the inner bag 3 of the container 1 is located below the tip of the bag breaking tool 90 . At this time, the blade tip of the bag breaking tool 90 penetrates the sheet member 50 exposed from the notch hole 22 a and the bottom surface 32 of the inner bag 3 . Therefore, the contents filled in the inner bag 3 are discharged to the supplied device 91 through the periphery of the bag breaking tool 90 .

(3.Modification)

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present invention. In addition, the gist of the following modification examples can be combined appropriately.

(3-1)

In the above embodiment, the main body 20 of the outer bag 2 and the inner bag 3 have a substantially rectangular parallelepiped shape, but they are not limited to this. For example, they may also have a cylindrical shape.

(3-2)

The form of the marking portion 22a is not limited to the notch hole. For example, as shown in FIG. 7A , a pattern displayed on the outer surface of the bottom portion 22 may be used. The pattern forming method can be appropriately selected depending on the embodiment. For example, the pattern can be formed by drawing with ink or the like on the bottom portion 22 or by changing the knitting method of materials such as cloth constituting the outer bag 2 on a part of the bottom portion 22 .

(3-3)

The structure of the notch hole 22a is not limited to the above-mentioned structure (one through hole). For example, as shown in FIG. 7B , two substantially semicircular through holes may be formed in the bottom portion 22 . In such a structure, the band-shaped portion 22d dividing the two through holes (defining the boundary) can function as a sagging suppressing member that suppresses the inner bag 3 from sagging from the notch hole 22a. The strip 22d may be a part of the bottom portion 22 remaining when two through holes are made (in this case, the material of the strip 22d must be the same as the material of the bottom portion 22), or may be formed by forming one through hole Then, a strip-shaped member separate from the outer bag 2 is installed to cover part of the through hole (in this case, the strip-shaped portion 22d may be made of the same material as the bottom portion 22 or may be different).

(3-4)

The sagging suppressing member that suppresses sagging of the inner bag 3 from the notch hole 22a is not limited to the above-mentioned sheet member 50, and can be appropriately selected depending on the embodiment. For example, as shown in FIG. 7C , the container 1 may be provided with a string-shaped member 51 that covers a part of the notch hole 22 a as a covering member. The string-like member 51 can be fixed to the side portion 23 of the outer bag 2 along the outer surface of the bottom portion 22 by fixing means such as sewing. According to this configuration, the strength of the bottom portion 22 can be improved. In addition, other fixing means such as suturing can also be used to fix around the notch hole 22a. According to this configuration, even if the string-shaped member 51 is cut by the bag breaking tool 90, fragments of the string-shaped member 51 can be prevented from being separated from the bottom portion 22 and mixed into the taken-out contents. The above configuration is just an example, and the material, quantity, fixing means, fixing position, etc. of the rope-like member 51 can be appropriately selected.

In addition, FIG. 8A shows an example of the sagging suppressing member. FIG. 8A shows a state in which the inner surface of the bottom portion 22 of the outer bag 2 is seen through. In the example shown in FIG. 8A , an annular convex portion 22 b protruding toward the bottom portion 32 of the inner bag 3 is formed on the inner surface of the bottom portion 22 along the circumference defining the notch hole 22 a. The convex portion 22b resists the force of the contents filled in the inner bag 3 entering the notch hole 22a together with the inner bag 3. The convex portion 22b may be formed integrally with the bottom surface 22 of the outer bag 2, or may be formed separately from the outer bag 2 and then fixed to the bottom surface 22. In addition, the convex portion 22b is not necessarily formed to surround the entire periphery of the notch hole 22a. That is, the convex part 22b may be formed partially along the periphery of the notch hole 22a.

In addition, FIGS. 8B and C show an example of the sagging suppressing member. FIG. 8B is a cross-sectional view of the bottom portion 22 of the outer bag 2 , and FIG. 8C is a bottom view of the outer bag 2 . In the example shown in FIGS. 8B and 8C , a plurality of receiving portions 22 c are formed on the outer surface of the bottom portion 22 along the periphery that defines the notch hole 22 a. When a part of the inner bag 3 hangs down from the notch hole 22a, the receiving portion 22c plays a role of receiving the inner bag 3. The receiving portion 22 c may be formed integrally with the bottom surface 22 of the outer bag 2 , or may be formed separately from the outer bag 2 and then fixed to the bottom surface 22 . In addition, the receiving portion 22c is not necessarily formed to surround the entire periphery of the notch hole 22a. That is, the receiving portion 22c may be formed partially along the periphery of the notch hole 22a.

(3-5)

In the above-described embodiment, the container 1 is provided with the sheet member 50 . However, according to different embodiments, the sheet component 50 may be appropriately omitted.

(3-6)

The sheet member 50 may be fixed to either one of the outer bag 2 and the inner bag 3 , or may be at least partially fixed relative to both the outer bag 2 and the inner bag 3 . According to this configuration, it is possible to prevent the sheet member 50 from being displaced within the outer bag 2 or from being deflected in one direction. When the sheet member 50 is fixed to both the outer bag 2 and the inner bag 3 at the same time, for example, after arranging the ends of the sheet member 50 as shown in FIG. 10 as described above, the sheet member 50 can be fixed by sewing or other means. to fix.

(3-7)

The structure of the sheet member 50 is not limited to the above. For example, the shape of the sheet member 50 is not limited to a rectangular shape, but may be appropriately selected such as a circular shape, a cross shape, etc. In addition, the sheet member 50 may have a concave and convex surface 50a formed with concavities and convexities. By arranging the sheet member 50 so that the concave and convex surface 50a faces the bottom surface 32 of the inner bag 3, friction is generated between the inner bag 3 and the sheet member 50, thereby preventing the inner bag 3 from moving or deflecting in one direction within the outer bag 2. direction. For example, as shown in FIGS. 9A and 9B , the uneven cross-sectional shape can be appropriately selected.

(3-8)

In the above embodiment, when the container 1 is opened, the marking part (notch hole 22a) of the container 1 is aligned with the tip of the bag breaking tool 90, and the bottom surface 32 of the inner bag 3 is located at the edge of the bag breaking tool 90. The bag breaking tool 90 penetrates the container 1 with the knife tip downward. However, the method of opening the container 1 is not limited to this. For example, the container 1 may be arranged above the supplied device 91 and the blade tip of the bag breaking tool 90 may be aligned with the marking portion of the container 1 . Alternatively, the bag breaking tool 90 may be moved upward relative to the container 1 and penetrate the container 1 so that the tip of the bag breaking tool 90 is positioned above the bottom surface 32 of the inner bag 3 .

(3-9)

The means for fixing the outer bag 2 and the inner bag 3 are not limited to the above-mentioned means, and can be appropriately selected according to the implementation form. For example, as another method of sewing, the corners of the side surfaces of the inner bag 3 can be sewn between the side portions 23 of the inner bag 3 and the suture lines of the side portions 23 for fixation. In addition, fixation methods other than suturing can also be used. For example, a convex part of the buckle is installed on one of the outer bag 2 and the inner bag 3, and a concave part is installed on the other, so that the two are fixed using the buckle. Furthermore, the two can be secured with hook and loop fasteners. In other words, the fixing means can be buckles, hook-and-loop fasteners, etc.

In addition, the container 1 of the present invention is not limited to the above-described embodiments and modifications, and appropriate design changes such as combining the configurations of the respective embodiments can be made within the intended scope of the present invention.

For example, as the sagging suppressing member, the sheet member 50 and at least one selected from the string member 51, the annular convex portion 22b, and the receiving portion 22c shown in (3-4) may be used in combination. In addition, two substantially semicircular-shaped through holes shown in FIG. 7B can be used as the marking portion 22a, and the sheet-like member 50, the rope-shaped member 51 shown in (3-4), and the annular convex portion can be used. At least one selected from the receiving portion 22b and the receiving portion 22c serves as the sagging restraining member.

(label description)

1 Flexible container

2 outer bags

3 inner bags

21 top face

21a upper opening

22 bottom surface

22a notch hole

25 filler cap

31 Fill the mouth

32 bottom surface

35b hooked piece

45 bundled tools

50 sheet parts

90 bag breaking tool

R1 input path.

Claims (3)

1. A flexible container, characterized by: an outer bag having a bottom surface; and an inner bag contained within said outer bag and filled with contents, The flexible container is configured to remove the filled content by penetrating the inner bag with a bag breaking tool from the outside, The outer bag has a logo portion on the outer surface of the bottom portion, The identification part indicates the position where the bag breaking tool is inserted, The identification portion is a notch hole formed by partially cutting off the bottom portion, The flexible container further includes a sagging suppression member configured to suppress the inner bag from sagging from the notch hole, The sagging suppressing member includes a sheet member disposed between the bottom portion and the inner bag and covering at least part of the notch hole, The sheet member has a concave and convex surface formed with concavities and convexities toward the inner bag. 2. The flexible container of claim 1, wherein, The outer bag and the inner bag are at least partially fixed to each other. 3. Flexible container according to claim 1 or 2, wherein, The inner bag is filled with water-absorbent resin particles as the content.