CN113260583A - Flexible container - Google Patents

Abstract

A flexible container which contains contents and takes out the contained contents by inserting a bag-breaking tool from the outside, the flexible container comprising 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 has a logo portion on an outer surface of the bottom surface portion. The marking part indicates a position through which the bag-breaking tool penetrates.

Description

Flexible container

Technical Field

The present invention relates to flexible containers.

Background

Flexible containers are commonly used to store and transport various contents such as powders, grains, vegetables, and the like. Although there are various types of flexible containers, there is one type of flexible container in which a filling port for contents is formed in an upper portion and a discharge port for contents is formed in a lower portion (see patent documents 1 to 3). Flexible containers of this type are suspended when opened and the contents are removed from a lower discharge opening.

The flexible containers disclosed in patent documents 1 to 3 have a two-layer structure, and each have an inner bag filled with a content and an outer bag accommodating the inner bag. The outer bag has a lower opening formed in a bottom surface portion thereof, the lower opening being covered with a ring-shaped cover which is continuous with a rim defining the lower opening in the bottom surface portion except when opened. The annular flower-shaped cap is referred to as a "lower outer cap" (16) in patent document 1, a "cap pressing piece" (16a to 16d) in patent document 2, and a "petal portion" (18) in patent document 3. The flower-ring-shaped cover includes portions corresponding to the plurality of petals, and the portions are radially arranged by binding a rope passing through the centers of the portions to form a flower ring just like in the same plane as the bottom surface portion, thereby closing the lower opening. On the other hand, when the flower is opened, the portion corresponding to the petal is made to droop downward by loosening the rope, and the lower opening is opened. Then, the contents are taken out through the discharge port portion corresponding to the lower portion of the inner bag pulled out from the lower opening.

Prior art documents

Patent document

Patent document 1: japanese Utility model registration No. 3191096

Patent document 2: japanese patent laid-open publication No. 2004-26202

Patent document 3: japanese patent laid-open publication No. 2016-33022

Disclosure of Invention

(problems to be solved by the invention)

In the above flexible container, the following operations are required: for example, when opening the bag, the cord for fixing the garland-shaped lid is unfastened to open the lid, the discharge port portion of the inner bag is pulled out, the heat-sealed portion at the front end of the discharge port portion is cut, and the cord for binding the discharge port portion is unfastened. However, such bag opening work is not always easy for the operator, and is often a burden in terms of time. Therefore, a flexible container which is easy to handle and has good workability is desired.

The invention aims to provide a flexible container capable of improving workability.

(means for solving the problems)

A flexible container according to an aspect of the present invention is a flexible container that contains a content and takes out the contained content by externally penetrating a bag-breaking tool, the flexible container including: an outer bag having a bottom surface portion; and an inner bag that is housed in the outer bag and filled with the content, wherein the outer bag has a mark portion on an outer surface of the bottom surface portion, the mark portion indicating a position through which the bag breaking tool is inserted.

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

According to the above configuration, the bag breaking tool does not contact the outer bag, and therefore the load applied to the bag breaking tool can be reduced. Further, according to this configuration, it is difficult to generate pieces of the outer bag when opening the bag. Therefore, the possibility of the content taken out of the flexible container being mixed as foreign matter into the pieces of the outer bag can be suppressed. For this reason, the workability of the work for handling the flexible container is improved.

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

In the flexible container relating to the above-described one aspect, it may be that the sagging prevention member includes a covering member that covers at least a part of the cutout hole.

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

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

(effect of the invention)

According to the present invention, the flexible container can be easily and reliably cut by positioning the cutting tool with respect to the indicator provided on the bottom surface of the flexible container and inserting the cutting tool through the indicator, so that the time required for opening the flexible container is shortened and the workability is improved.

Drawings

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

Fig. 2 is a perspective view of the inner bag.

Fig. 3 is a top view of a flexible container.

Fig. 4 is a bottom view of the flexible container.

Fig. 5 is a view showing a state in which the flexible container is suspended from above by the suspending tool.

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

Fig. 7A is a bottom view according to a modification.

Fig. 7B is a bottom view according to another modification.

Fig. 7C is a bottom view according to still another modification.

Fig. 8A is a perspective view of the inside of the outer bag according to the modification.

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

Fig. 8C is a bottom view of the outer bag according to another modification.

Fig. 9A is a cross-sectional view of a sheet member according to a modification.

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

Fig. 10 is a cross-sectional view showing a structure in the vicinity of a lower end portion of a side surface portion of an outer bag.

Detailed Description

A flexible container according to an embodiment of the present invention will be described with reference to the accompanying drawings. Fig. 1 shows a side view of a flexible container (hereinafter, may be simply referred to as a container) 1 according to the present embodiment. Hereinafter, for convenience of explanation, the vertical direction in fig. 1 will be referred to as "vertical" and will be explained with reference to this.

(1. integral construction of Flexible Container)

The flexible container 1 is a container for containing contents for storing and delivering the contents. As the name implies, the flexible container 1 is made of a soft material. Therefore, the container 1 is three-dimensionally expanded in a state filled with the content, but can be folded flat in an empty state.

The type of the contents filled in the container 1 is not particularly limited, and is usually powder, grains, vegetables, or the like. These contents may be articles whose performance is easily affected by moisture in the air, and among them, water-absorbent resin particles are particularly preferable.

The flexible container 1 has a double-layer structure, and includes an outer bag 2 and an inner bag 3, and the inner bag 3 is accommodated in the outer bag 2. The contents are filled in the inner bag 3. The outer bag 2 is mainly made of a material using a high-strength cloth. The outer bag 2 has a body portion 20 that covers most of the inner bag 3, and the body portion 20 has a top surface portion 21, a bottom surface portion 22, and side surface portions 23. In the present embodiment, the top surface portion 21 and the bottom surface portion 22 are square. That is, the main body portion 20 of the outer bag 2 has a substantially rectangular parallelepiped shape, and the side surface portion 23 includes four rectangular side surfaces. A pocket 23a made of a transparent material into which a label or the like is inserted is attached to the side surface portion 23. An opening (hereinafter referred to as an upper opening) 21a is formed in the center of the top surface portion 21. The outer bag 2 has a mark 22a on the outer surface of the bottom surface 22 of the outer bag, and in the present embodiment, a notch hole is used as the mark 22 a. Hereinafter, the notch hole is denoted by the same reference numeral as the mark portion and is referred to as a notch hole 22 a. The detailed constitution 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 surface portion 32 and a side surface portion 33, and has a substantially rectangular parallelepiped shape with an upper portion opened. The upper portion of the inner bag 3 extends above the top surface portion 21 through the upper opening 21a, and forms a filling port portion 31 for the contents. The contents are filled into the inner bag 3 through the filling port 31. That is, the filling port 31 forms a feed path R1 for filling the inner bag 3 with the contents.

The inner bag 3 is configured to have a vertically longer overall length than the outer bag 2. As shown in fig. 2, the bottom surface portion 32 of the inner bag 3 has a rectangular shape, and the extending end portions 32a extend from the two opposing sides of the bottom surface portion 32 toward the outside of the inner bag 3. The extended end portion 32a can be fixed by a fixing means such as sewing in a state of being sandwiched between the bottom surface portion 22 and the side surface 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 at a portion. By fixing the outer bag 2 and the inner bag 3 (particularly, by fixing the bottom surface portion 32 of the outer bag 2 and the inner bag 3 and/or the side surface portion 33 in the vicinity of the bottom surface portion 32), the inner bag 3 is easily prevented from dropping from the notch hole 22a, and the bag breaking tool 90 is easily inserted by appropriately tensioning the bottom surface portion 32 of the inner bag 3 in a state in which the contents are filled. Further, "the inner bag 3 hangs down from the notch hole 22 a" means that the bottom surface portion 32 of the inner bag 3 protrudes below the bottom surface portion 22 of the outer bag 2 through the notch hole 22a when the container 1 is lifted up, and "the hang down is suppressed" means that not only the hang down is completely prevented, but also the bottom surface portion 32 of the inner bag 3 is suppressed to a degree that does not affect the actual use of the flexible container 1 to such an extent that the bottom surface portion 32 of the outer bag 2 protrudes below the bottom surface portion 22.

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

In the present embodiment, as shown in the cross-sectional view of fig. 10, the side surface portion 23 of the outer bag 2 is folded back inward, the bottom surface portion 22 of the outer bag 2 and the extended end portion 32a of the inner bag 3 are sandwiched between the folded portions, and these portions are sewn together at the positions indicated by the dot-dash lines, whereby the outer bag 2 and the inner bag 3 are fixed to each other. Further, an end of a sheet member 50, which will be described later, may be disposed between the extended end 32a and the bottom surface 22 and fixed together with other portions. In this way, by sharing the fixing means (in the present embodiment, sewing) of the outer bag 2, the inner bag 3, and the sheet member 50, the fixed portion becomes stronger and less deformable, and the fixed portion of the sheet member 50 becomes less likely to break. Further, by covering the bottom surface portion 32 of the inner bag 3 with the sheet member 50, the bottom surface of the flexible container 1 after the contents are filled is kept smoother, and the bag breaking tool 90 described later is easily inserted at a target position.

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

The opening area of the upper portion (the filling port portion 31) of the inner bag 3 is larger than the opening area of the filling port cover 25. Therefore, when the filling port portion 31 is contained in the outer bag 2, the filling port portion is wrinkled and pressed. Since the filler neck part 31 forms a filler neck together with the filler neck cover 25 as described above, hereinafter the filler neck part 31 and the filler neck cover 25 are sometimes referred to together as a filler neck P1.

(1-1. constitution near filling opening)

The structure near the filling port P1 will be described below. The filling port P1 is closed by a bag closing member that closes the input path R1. As the bag closing member, for example, a binding tool 45 that binds the filling port P1 can be cited. In the present embodiment, as shown in fig. 1, the binding tool 45 is fixed to the outer surface of the filler door 25. The binding tool 45 is a cord-like member. The binding tool 45 is attached by sewing or the like near the center of the filler port cover 25 in the vertical direction so as to extend in the horizontal direction without binding the filler port P1.

When closing the inlet path R1, the filler neck 31 is first pressed together with the filler cap 25 covering the filler neck to close the inlet path R1. Thereafter, the binding tool 45 is wound around the filling port P1 to maintain this pressed state. At this time, the binding tool 45 is bound in a method such as a bow tie. More specifically, it may be configured to: the filler cap 25 and the filler neck 31 are bundled together into a single knot, and then the filler neck 31 protruding from the filler cap 25 is folded back to one side so that the tip of the filler neck 31 faces downward, and the folded-back portion of the filler neck 31 and the filler cap 25 are bundled together with a bow knot.

The outer bag 2 has a ring-flower-shaped cover (hereinafter referred to as a ring-flower cover) 24 for opening and closing the upper opening 21 a. Fig. 3 is a plan view of the outer bag 2 in a state where the wreath cover 24 is closed. The floral ring cover 24 includes a plurality of petal-shaped portions (hereinafter, petal portions) 24 a. The petal sections 24a are arranged radially around the central axis a1 in the closed state of the ring cover 24, and cover the upper opening 21a except for the central portion of the upper opening. The petal sections 24a have the same shape as each other, each being substantially trapezoidal in shape, but the base is in the shape of a circular arc corresponding to the contour of the upper opening 21 a. That is, the bottom side of the petal section 24a is continuous with the top surface section 21 at a portion outside the edge defining the upper opening 21 a.

The opening/closing member is provided on the wreath cover, and in the present embodiment, the opening/closing member is composed of a rope passage and a rope inserted into the rope passage. Specifically, a threading passage extending in the circumferential direction with respect to the central axis a1 is formed near the inner end of the petal section 24a, and the rope 24b is inserted into these passages. Both ends of the rope 24b not inserted into the threading passage are wound by the sliding body 24 c. Then, the slide body 24c moves along the bundle of the two ropes 24b, thereby opening and closing the ring cover 24. Specifically, when the slide body 24c is moved to make the loop formed by the rope 24b small, that is, when the rope 24b is tied, the petal sections 24a tilt to spread out in the same plane as the top surface section 21, and the closed state shown in fig. 3 is achieved. On the other hand, when the slider 24c is moved to enlarge the loop formed by the rope 24b, that is, when the rope 24b is loosened, the petal sections 24a can be erected straight in the vertical direction as shown in fig. 1.

As shown in fig. 1, the filler cap 25 is disposed inside the flower-ring cover 24. That is, the flower ring cover 24 is fixed to the top surface portion 21 so as to surround the filler door 25 from the outside. The inner lid 4 is disposed outside the filler cap 25 and inside the wreath cap 24. The inner lid 4 is also surrounded from the outside by a wreath lid 24. The filling port P1 tied by the tying tool 45 is properly folded and accommodated inside the wreath cover 24, and then, the wreath cover 24 is closed. At this time, the inner lid 4 covers the filling port P1 from the upper side inside the floral ring lid 24. Furthermore, the floral ring cover 24 need not 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 of the floral ring cover 24.

(1-2. constitution near the bottom surface)

Next, a structure in the vicinity of the bottom surface of the container 1 will be described. The bottom surface of the container 1 is configured such that a bag breaking tool 90 disposed below the container 1 penetrates the bottom surface of the container 1 when the container 1 is opened. Fig. 4 shows a bottom view of the container 1 according to the present embodiment. The outer bag 2 has a mark 22a on the outer surface of the bottom surface 22. The mark 22a indicates a position through which the bag-breaking tool 90 penetrates. Therefore, the mark portion 22a is formed so as to be distinguished from other portions of the outer surface of the bottom surface portion 22. In the present embodiment, the mark portion 22a is an opening (notch hole) formed by cutting out a central portion of the bottom surface portion 22. In the present embodiment, the notch hole 22a is circular. Although the upper end opening 21a and the notch hole 22a are not originally present in the side view of fig. 1, the positions thereof are shown by hatching for reference. The main body portion 20, the top surface portion 21, the bottom surface portion 22, the upper opening 21a, and the cutout hole 22a are coaxially arranged, and their common central axes are denoted by reference numeral a1 hereinafter.

The container 1 of the present embodiment includes a sagging prevention member for preventing the inner bag 3 filled with the content from being torn by the inner bag 3 hanging from the notch hole 22 a. The droop suppressing member may include, for example, a covering member that covers at least a portion of the notch hole 22 a. The locations where the covering members are provided are the outer surface and the inner surface of the bottom surface portion 22 of the outer bag 2, the outer surface and the inner surface of the side surface portion 23, the outer surface of the inner bag 3, and the space between the outer bag 2 and the inner bag 3, and the like, and can be appropriately selected according to the embodiment. In the present embodiment, the sheet member 50 is adopted as the covering member (droop suppressing member). Specifically, the container 1 according to the present embodiment further includes a sheet member 50 that is provided between the bottom surface portion 22 of the outer bag 2 and the bottom surface portion 32 of the inner bag 3 and covers the notch hole 22 a. In the present embodiment, the sheet member 50 has a rectangular shape smaller than the bottom surface portion 22 by one turn, and covers the entire notch hole 22a from the inside of the outer bag 2. That is, in fig. 4, the sheet member 50 is exposed from the notch hole 22a, not the inner bag 3. Since the notch hole 22a is covered with the sheet member 50 in this way, the inner bag 3 is not exposed from the notch hole 22a and is less likely to hang down. Although the sagging can be reduced by fixing the outer bag 2 and the inner bag 3 near the periphery of the bottom surface portion 32 as described above, the inner bag 3 is required to be flexible, so that the thickness is limited, the stretching is easy, and it is difficult to sufficiently suppress the sagging only by this method. Therefore, even when the outer bag 2 and the inner bag 3 are fixed, a sagging prevention member such as the sheet member 50 is preferably provided.

In view of facilitating the positioning of the bag breaking tool 90, the area of the notch hole 22a is preferably 5% or more, 10% or more, or 15% or more of the area of the bottom surface portion 22 of the outer bag 2 (including the area of the notch hole 22 a). The area of the notch hole 22a is preferably 30% or less, 25% or less, or 20% or less of the area of the bottom surface portion 22 of the outer bag 2 (including the area of the notch hole 22a) in order to easily suppress sagging of the inner bag 3.

The sheet member 50 can prevent the inner bag 3 from dropping from the notch hole 22a due to the mass of the contents when the container 1 is transported or suspended, and can also prevent the inner bag 3 from being exposed from the notch hole 22 a. The sheet member 50 is preferably made of a material having flexibility to such an extent that the flexibility of the outer bag 2 is not impaired and not deformed more than the inner bag 3. When opening the container 1, 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 of a material that can be cut by the bag-breaking tool 90.

The material constituting the sheet member 50 may be appropriately changed depending on the contents of the container 1 and the selected inner bag 3, but it is preferable to use a material which can be easily cut by the bag-breaking tool 90 and has a certain degree of barrier property that does not change the physical properties of the contents when the contents are water-absorbent resin particles. Examples of such a material include synthetic resins, specifically, polyolefin resins such as polyethylene, polypropylene, cycloolefin, and a copolymer including polyethylene; polyester resins such as polyethylene terephthalate and polylactic acid, and the like; a polyamide resin; polystyrene resin, and the like. The material of the sheet member 50 is preferably a polyolefin resin, and more preferably polyethylene or polypropylene. When the sheet member 50 is made of a material that is easily torn, there is a possibility that a large hole may be accidentally formed in the sheet member 50 due to damage from the outside, with the result that the inner bag 3 exposed from the hole is ruptured, but if the sheet member 50 is made of polyethylene or polypropylene (particularly polyethylene), even if a small damage occurs in the sheet member 50, a large hole is not caused, and rupture of the inner bag 3 can be prevented.

The thickness of the sheet member 50 may be appropriately selected according to the contents of the container 1. When the content is the water-absorbent resin particles, the thickness of the sheet member 50 is preferably in the following range: can be easily cut by the bag-breaking tool 90, can sufficiently suppress the sagging of the inner bag 3, and can ensure a certain degree of barrier property to prevent the physical properties of the water-absorbent resin particles from changing. In view of these considerations, the lower limit of the specific thickness of the sheet member 50 is, for example, 50 μm, preferably 80 μm, more preferably 100 μm, and particularly preferably 120 μm, and the upper limit of the thickness is, for example, 500 μm, preferably 300 μm, and more preferably 200 μm.

(1-3. other constitutions)

The container 1 further includes a plurality of hooks 35b fixed to the outer bag 2. The hooked member 35b is a member for hooking to the hanging tool 7, and the hanging tool 7 hangs the flexible container 1 from above. The hook 35b corresponds to an upper portion of a rope member (hereinafter referred to as a frame string) 35 disposed near the center in the width direction of the side surface portion 23 of the outer bag 2. More specifically, as shown in fig. 1, the ends 35a of the two frame cords 35 are fixed by sewing or the like so as to overlap each other at the upper portion of the pocket 23a near the center in the width direction of the side surface portion 23. The upper portion of one frame cord 35 extends over four corners of the top surface portion 21, and the end portions 35a are fixed to the adjacent side surface portions 23 (see fig. 3). Therefore, the upper portion of the frame string 35 is formed to maintain a loop shape and becomes the hooked member 35 b.

Fig. 5 shows a state of the container 1 suspended from above by hooking the hooked member 35b to the suspending tool 7. As shown in fig. 5, for example, the four hanging tools 7 laid down from above are respectively hooked by the hooking pieces 35b, so that the flexible container 1 can be hung from above. Again, the suspension means 7 is typically a hook.

(2. method of Using Flexible Container)

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

(2-1. method for filling Flexible Container)

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 portion 22, and covers the notch hole 22a from the inside. Next, the inner bag 3 is accommodated in the outer bag 2. The inner bag 3 is accommodated such that the bottom surface portion 32 is along the upper surface of the sheet member 50 and the side surface portion 33 is along the inner surface of the side surface portion 23. Then, the filling port portion 31 of the upper portion of the inner bag 3 is inserted into the upper opening 21a of the top surface portion 21 of the outer bag 2 and the filling port cover 25, and is pulled out so as to be slightly exposed from the upper end of the filling port cover 25. Thus, the filler port P1 is formed by the filler port portion 31 and the filler port cover 25 protruding above the upper surface portion 21 through the upper opening 21 a.

The prepared empty flexible container 1 is then filled with the contents as described above. First, the empty flexible container 1 is placed below a device such as a hopper (hereinafter referred to as a "supply device") for supplying the contents in a posture in which the top surface portion 21 faces upward. Next, the hooked members 35b of the outer bag 2 are hooked by a suspending means such as a hook of the supply device, and the flexible container 1 is suspended from above. Then, the slider 24c is released, the ring cover 24 is opened, the inner lid 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 may be fixed to the supply device with a jig or the like so as to cover the discharge port of the supply device. This opens the input path R1 upward, i.e., opens the discharge port of the supply device through which the contents are discharged. Then, the discharge port of the supply device is opened, and the content is charged into the inner bag 3 from the supply device through the charging path R1.

After filling the contents, the filling port P1 is closed. Specifically, the filling port P1 is contracted to close the inlet path R1 formed inside the filling port portion 31. Then, the binding tool 45 is firmly wound around the filling port in such a manner as to surround the elongated filling port P1 from the outside, and thereafter, the binding tool 45 is strapped to lock the wound state. Subsequently, the filling port P1 is folded, the inner lid 4 is placed on the filling port, and the wreath lid 24 is closed. Thereby, the upper opening 21a is closed, and the filling port P1 is accommodated inside the floral ring cover 24. Through the above operations, the flexible container 1 containing the content is manufactured.

The flexible container containing the contents is stored at an appropriate storage place and transported as necessary. When the flexible container 1 is moved, it may be placed on a pallet and carried by a carrying device such as a forklift. Further, a conveying device such as a crane having a tool such as a hook can be used. That is, the flexible container 1 can be easily moved by driving the conveying device in a state where the hooked member 35b is hooked to the hanging tool of the conveying device.

(2-2. method for opening flexible container)

Next, a method of opening the flexible container 1 containing the content will be described with reference to an example shown in fig. 6. First, the flexible container 1 containing the content is placed above a device such as a hopper (hereinafter referred to as a device to be supplied 91) to which the content is supplied, with the bottom surface portion 22 facing downward. The method of disposing the container 1 is not particularly limited. For example, the container 1 may be lifted up with the hooked member 35b of the container 1 hooked on the four movable hanging means 7a laid down from above, and then the container 1 may be disposed above the supply target device 91 by moving the hanging means 7 a. In the example shown in fig. 6, the suspending tool 7a is movable in the vertical direction, the left-right direction, and the paper surface direction of fig. 6.

A bag-breaking tool 90 is fixed above the center of the device to be supplied 91 shown in fig. 6. The bag breaking tool 90 is typically a blade and is secured with its tip facing upward. The bag breaking tool 90 is configured to be able to penetrate the mark portion of the outer bag 2 and the bottom surface portion 32 of the inner bag 3 together. In the present embodiment, the bag breaking tool 90 is configured to penetrate the sheet member 50 together with the bottom surface portion 32 of the inner bag 3. Therefore, the container 1 is aligned such that the cutting edge of the bag breaking tool 90 is positioned inside the circular periphery of the bottom surface portion 22 of the outer bag 2 that defines the notch hole 22a (the position of the notch hole 22a is shown in fig. 6 by hatching for reference). In other words, the container 1 is aligned such that the bag-breaking tool 90 penetrates through the portion of the sheet member 50 exposed from the notch hole 22 a. The container 1 can be aligned by visual observation by an operator while confirming the position of the notch hole 22a as the indicator, for example. Further, the confirmation may be performed while confirming an image captured by a camera provided near the bag-breaking tool 90 with a remote monitor.

Next, all the suspending means 7a are moved downward in fig. 6, and the bottom surface portion 32 of the inner bag 3 of the container 1 is positioned below the cutting edge of the bag-breaking means 90. At this time, the cutting edge of the bag-breaking tool 90 penetrates the sheet member 50 exposed from the notch hole 22a and the bottom surface portion 32 of the inner bag 3. Therefore, the content filled in the inner bag 3 is discharged to the supply device 91 through the outer 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 embodiment, and various modifications may be made without departing from the spirit of the present invention. The gist of the following modifications can be combined as appropriate.

(3-1)

In the above embodiment, the body portion 20 of the outer bag 2 and the inner bag 3 have a substantially rectangular parallelepiped shape, but the present invention is not limited thereto, and may be cylindrical, for example.

(3-2)

The manner 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 surface portion 22 may be used. The method of forming the pattern may be appropriately selected according to the embodiment. For example, the pattern may be formed by drawing with ink or the like on the bottom surface portion 22, or by changing a knitting method of a material such as a cloth constituting the outer bag 2 on a part of the bottom surface portion 22.

(3-3)

The configuration of the notch hole 22a is not limited to the above-described configuration (one through hole). For example, as shown in fig. 7B, two substantially semicircular through holes may be formed in the bottom surface portion 22. In such a configuration, the strip-shaped portion 22d that defines the two through holes (defining the boundary) can function as a sagging prevention member that prevents the inner bag 3 from sagging from the notch hole 22 a. The strip-shaped portion 22d may be a part of the bottom surface portion 22 remaining when two through holes are formed (in this case, the material of the strip-shaped portion 22d is necessarily the same as that of the bottom surface portion 22), or a strip-shaped member separate from the outer bag 2 may be attached after one through hole is formed so as to cover a part of the through hole (in this case, the material of the strip-shaped portion 22d may be the same as or different from that of the bottom surface portion 22).

(3-4)

The sagging prevention member for preventing the inner bag 3 from sagging from the notch hole 22a is not limited to the sheet member 50 described above, and may be appropriately selected according to the embodiment. For example, as shown in fig. 7C, the container 1 may include a string-like member 51 covering a part of the notch hole 22a as the covering member. The string-like member 51 can be fixed to the side surface portion 23 of the outer bag 2 along the outer surface of the bottom surface portion 22 by fixing means such as sewing. With this configuration, the strength of the bottom surface portion 22 can be increased. Alternatively, the fixation may be performed around the notch hole 22a by a fixation means such as sewing. According to this configuration, even if the string-like member 51 is cut by the bag-breaking tool 90, pieces of the string-like member 51 are prevented from separating from the bottom surface portion 22 and mixing into the contents to be taken out. The above configuration is merely an example, and the material and number of the string-like members 51, the fixing means, the fixing position, and the like can be appropriately selected.

Fig. 8A shows an example of the sag preventing member. Fig. 8A shows a state in which the inner surface of the bottom surface portion 22 of the outer bag 2 is seen through. In the example shown in fig. 8A, an annular protrusion 22b protruding toward the bottom surface portion 32 of the inner bag 3 is formed on the inner surface of the bottom surface portion 22 along the peripheral edge defined by the notch hole 22 a. The convex portion 22b acts against the force with which the content filled in the inner bag 3 enters the notch hole 22a together with the inner bag 3. The convex portion 22b may be formed integrally with the bottom surface portion 22 of the outer bag 2, or may be formed separately from the outer bag 2 and then fixed to the bottom surface portion 22. The convex portion 22b does not necessarily have to be formed so as to surround the entire periphery of the notch hole 22 a. That is, the convex portion 22b may be partially formed along the peripheral edge portion of the notch hole 22 a.

Further, fig. 8B and C show an example of the sag preventing member. Fig. 8B is a sectional view of the bottom surface portion 22 of the outer bag 2, and fig. 8C is a bottom view of the outer bag 2. In the example shown in fig. 8B and C, a plurality of receiving portions 22C are formed on the outer surface of the bottom surface portion 22 along the peripheral edge defining the notch hole 22 a. When a part of the inner bag 3 hangs down from the notch hole 22a, the receiving portion 22c functions to receive the inner bag 3. The receiving portion 22c may be formed integrally with the bottom surface portion 22 of the outer bag 2, or may be formed separately from the outer bag 2 and then fixed to the bottom surface portion 22. The receiving portion 22c does not necessarily have to be formed so as to surround the entire periphery of the notch hole 22 a. That is, the receiving portion 22c may be partially formed along the peripheral edge portion of the notch hole 22 a.

(3-5)

In the above embodiment, the container 1 includes the sheet member 50. However, the sheet member 50 may be omitted as appropriate according to various embodiments.

(3-6)

The flap member 50 may be fixed to either of the outer bag 2 and the inner bag 3, or at least partially fixed with respect to both the outer bag 2 and the inner bag 3. With this configuration, the sheet member 50 can be prevented from shifting within the outer bag 2 or being displaced in one direction. In the case where the sheet member 50 is fixed to both the outer bag 2 and the inner bag 3, for example, the sheet member 50 may be fixed by fixing means such as sewing after the end portions thereof are arranged as shown in fig. 10 as described above.

(3-7)

The configuration 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 circle, a cross, and the like. Further, the sheet member 50 may have an uneven surface 50a formed with unevenness. By providing the sheet member 50 such that the uneven surface 50a faces the bottom surface portion 32 of the inner bag 3, friction is generated between the inner bag 3 and the sheet member 50, and the inner bag 3 can be prevented from moving or deviating in one direction within the outer bag 2. For example, as shown in fig. 9A and 9B, the cross-sectional shape of the concave-convex can be selected as appropriate.

(3-8)

In the above embodiment, when opening the bag of the container 1, the marking portion (notch hole 22a) of the container 1 is aligned with the cutting edge of the bag-breaking tool 90, and the bag-breaking tool 90 is inserted into the container 1 so that the bottom surface portion 32 of the inner bag 3 is positioned below the cutting edge of the bag-breaking tool 90. However, the method of opening the bag of the container 1 is not limited thereto. For example, the container 1 may be disposed above the supply device 91, and the cutting edge of the bag-breaking tool 90 may be aligned with the marked portion of the container 1. Further, the bag breaking tool 90 may be moved upward with respect to the container 1, and the bag breaking tool 90 may be inserted into the container 1 so that the cutting edge of the bag breaking tool 90 is positioned above the bottom surface portion 32 of the inner bag 3.

(3-9)

The fixing means of the outer bag 2 and the inner bag 3 is not limited to the above means, and may be appropriately selected according to the embodiment. For example, as another mode of sewing, a corner portion of the side surface of the inner bag 3 may be sewn and fixed between the sewing thread of the side surface portion 23 and the side surface portion 23 of the inner bag 3. Further, fixing means other than sewing may be employed. For example, the male member of the buckle is attached to one of the outer bag 2 and the inner bag 3, and the female member is attached to the other, whereby both are fixed by the buckle. Furthermore, the two can be fixed by hook and loop fasteners. In other words, the securing means may be a snap, hook and loop, or the like.

The container 1 of the present invention is not limited to the above-described embodiments and modifications, and design changes such as combination of the components of the respective embodiments may be appropriately made within the intended scope of the present invention.

For example, as the sagging prevention member, the sheet member 50 and at least one selected from the string-like member 51, the annular convex portion 22b, and the receiving portion 22c shown in (3-4) may be used in combination. Further, two through holes of a substantially semicircular shape shown in fig. 7B may be employed as the indicator 22a, and at least one selected from the string-like member 51, the annular convex portion 22B, and the receiving portion 22c shown in (3-4) of the sheet-like member 50 may be employed as the sagging prevention member.

(description of reference numerals)

1 Flexible Container

2 outer bag

3 inner bag

21 top surface part

21a upper opening

22 bottom surface part

22a notch hole

25 filler cap

31 filling mouth part

32 bottom surface part

35b is hung by the hook

45 binding tool

50 sheet-like member

90 bag-breaking tool

R1 is thrown into the path.

Claims (8)

1. A flexible container that contains a content and takes out the contained content by externally penetrating a bag-breaking tool, the flexible container comprising:

an outer bag having a bottom surface portion; and

an inner bag accommodated in the outer bag and filled with the contents therein,

the outer bag has a logo portion on an outer surface of the bottom surface portion,

the marking part indicates a position through which the bag-breaking tool penetrates.

2. The flexible container of claim 1,

the identification part is a pattern displayed on the outer surface of the bottom surface part.

3. The flexible container of claim 1,

the mark part is a notch hole formed by partially cutting off the bottom surface part.

4. The flexible container of claim 3,

the flexible container further includes a droop suppressing member configured to suppress the inner bag from drooping from the notch hole.

5. The flexible container of claim 4,

the droop suppressing member includes a covering member that covers at least a portion of the cutout hole.

6. The flexible container of claim 5,

the covering member includes a sheet member provided between the bottom surface portion and the inner bag.

7. The flexible container of any of claims 1-6,

the outer bag and the inner bag are at least partially fixed to each other.

8. The flexible container of any of claims 1-7,

the inner bag is filled with water-absorbent resin particles as the content.

Images