TWI741224B - Flexible container - Google Patents

Abstract

A flexible container that can be easily opened is provided. Provided is a flexible container equipped with an outer bag, an inner bag, a first binding device and a lid for accommodating contents. The outer bag has a bottom surface formed with a lower opening. The inner bag is a cylindrical inner bag that is accommodated in the outer bag and filled with contents, and has a discharge port. The discharge port forms a discharge path for discharging the contents, and extends below the bottom surface through the lower opening. The first binding device binds the discharge port to close the discharge path. The cover closes the lower opening and is installed on the outside of the bottom surface to cover the discharge port. The discharge port portion is screwed to close the aforementioned discharge path. The first binding tool binds the discharge port to keep the discharge port in a tightly tightened state. The cover is installed on the outside of the bottom surface to cover the discharge port bound by the first binding device.

Description

Flexible container

Field of invention

The present invention relates to a flexible container and a manufacturing method thereof.

Background of the invention

In order to store and transport various contents such as powders and grains, grains, and vegetables, flexible containers are often used. There are various types of flexible containers, one of which is a type in which a filling port for the content is formed in the upper part and a discharge port is formed in the lower part (refer to Patent Documents 1 to 3). Such a flexible container is suspended when it is opened, and the contents are taken out from the discharge port in the lower part.

The flexible containers of Patent Documents 1 to 3 have a two-layer structure, and include: an inner bag for filling contents; and an outer bag for accommodating the inner bag. A lower opening is formed on the bottom surface of the outer bag, and the bottom opening is covered by a corolla cap, which is continuous with the edge defining the lower opening, except when it is unsealed. Furthermore, the flower crown cap is called "lower outer cover" in Patent Document 1 (16), in Patent Document 2 it is called "Cover Sheet" (16a~16d), and in Patent Document 3 it is called " Chrysanthemum petals" (18). The cap of the crown of the flower is composed of parts corresponding to a plurality of petals, and is tied by a rope passing through the center of these parts, and these parts are arranged to radiate in the same plane as the bottom surface. Shape, thereby closing the lower opening. On the other hand, when unsealing, by untying the cord, it corresponds to the petal’s The part hangs downward, and the lower opening is opened. Next, the contents are taken out through the discharge port corresponding to the lower part of the inner bag pulled out from the lower opening.

Patent literature

[Patent Document 1] Japanese Utility Model Registration No. 3191096

[Patent Document 2] Japanese Patent Laid-Open No. 2004-26202

[Patent Document 3] Japanese Patent Laid-Open No. 2016-33022

Summary of the invention

In the above flexible container, the following operations are required. For example, when unsealing, untie the cord that fixes the corolla cap to open the cap, pull out the discharge port of the inner bag, and cut off the front end of the discharge port. For the heat-sealed part, untie the cord that binds the discharge port. However, since the lower opening is formed on the bottom surface of the outer bag, such an unsealing operation may not be easy for an operator standing on the side of the flexible container. In addition, the flexible container containing the content is often heavy and difficult to tilt. Therefore, in this case, the unsealing operation becomes difficult.

The present invention aims to provide a flexible container that can be easily opened and a manufacturing method thereof.

The flexible container of the first viewpoint is a flexible container for accommodating contents, and includes an outer bag, an inner bag, a first binding device, and a lid. The outer bag has a bottom surface formed with a lower opening. The inner bag is placed in the aforementioned outer bag Inside, a cylindrical inner bag that can be filled with contents, and has a discharge port. The discharge port forms a discharge path for discharging the contents, and extends below the bottom surface through the lower opening. The first binding device binds the discharge port to close the discharge path. The cover is installed on the outside of the bottom surface to cover the discharge port. The discharge port is tightened to close the discharge path. The first binding tool binds the discharge port to keep the discharge port in a tightly tightened state. The cover is installed on the outside of the bottom surface to cover the discharge port bound by the first binding device.

The flexible container of the second aspect is the flexible container of the first aspect. After the discharge port is tightened to close the discharge path, it is turned back toward one side, or it is turned back toward the other side to close the discharge path and then tightened. The said 1st binding tool binds the said discharge port part, and maintains the state which turned back and tightened the said discharge port part to one side. The cover is installed on the outer side of the bottom surface to cover the discharge port that is folded after being bound by the first binding device.

The flexible container of the third viewpoint is the flexible container of the first viewpoint or the second viewpoint, and is configured such that when the cover is removed from the bottom surface, the discharge port is bound by the first binding device Hang down from the aforementioned bottom face.

The flexible container of the fourth viewpoint is the flexible container of any one of the first viewpoint to the third viewpoint, wherein the lid is configured to be attached to the bottom surface by a hook and loop fastener.

The flexible container of the fifth viewpoint is the flexible container of any one of the first viewpoint to the fourth viewpoint, wherein the first binding tool is a belt-shaped member with a hook and loop fastener.

The flexible container of the sixth viewpoint is the flexible container of any one of the first viewpoint to the fifth viewpoint, wherein the outer bag further has a discharge port cover surrounding the discharge port. The discharge port cover is fixed to the bottom surface so as to extend from the lower opening to the bottom of the bottom surface. The first binding tool is fixed to the discharge port cover.

The flexible container according to the seventh aspect is the flexible container according to any one of the first aspect to the sixth aspect, wherein the outer bag further has an upper surface portion formed with an upper opening. The inner bag further has a filling opening, and the filling opening forms an input path for filling contents, and extends above the upper surface part through the upper opening.

The flexible container of the eighth aspect is the flexible container of the seventh aspect, and is further equipped with a second binding device. The second binding device is used to bind the filling opening to close the input path and bind.

The flexible container according to the ninth aspect is the flexible container according to the eighth aspect, wherein the outer bag further has a filling opening cover surrounding the filling opening. The filling port cover is fixed to the upper surface part so as to protrude above the upper surface part from the upper opening. The second binding device is fixed to the filling port cover.

The flexible container of the tenth viewpoint is the flexible container of the eighth viewpoint or the ninth viewpoint, which is further equipped with a hooked device, and the hooked device is fixed to the center of the upper part of the second binding device or the outer bag The nearby part can be hooked on the hanger that suspends the flexible container from above.

The flexible container of the 11th viewpoint is the flexible container of any one of the 1st viewpoint to the 10th viewpoint, and the content is a water-absorbent resin particle.

The manufacturing method of the twelfth viewpoint is a manufacturing method of a flexible container for accommodating contents, and includes the following steps.

‧Prepare the outer bag. The aforementioned outer bag has a bottom surface formed with a lower opening.

‧Prepare an inner bag. The inner bag is a cylindrical inner bag that can be filled with contents and has a discharge port. The discharge port forms a discharge path for discharging the contents.

‧The inner bag is placed in the outer bag in such a way that the discharge port protrudes below the bottom face through the lower opening.

‧Tighten the discharge port to close the discharge path.

‧Use the first binding tool to bind the discharge port to keep the discharge port tightened.

‧Install the cover on the outside of the bottom face to cover the discharge port bound by the first binding device.

The manufacturing method of the 13th viewpoint is the manufacturing method of the 12th viewpoint, wherein the outer bag further has an upper surface portion formed with an upper opening. The inner bag has a filling opening, and the filling opening forms an input path for filling contents. The step of accommodating the inner bag in the outer bag includes the following steps: accommodating the inner bag in the outer bag in such a manner that the filling mouth portion protrudes above the upper surface portion through the upper opening.

The manufacturing method of the 14th viewpoint is a manufacturing method of a flexible container filled with contents, and includes the following steps.

‧Use the manufacturing method of the 13th viewpoint to manufacture flexible containers.

‧Fill the contents into the inner bag through the input path of the flexible container.

‧After filling the contents, close the input path.

The fifteenth point of view is to open the package to be flexible with the contents The method of opening a sexual container includes the following steps.

‧Use the manufacturing method of claim 14 to manufacture a flexible container with contents.

‧Hanging flexible container with contents.

‧Remove the cover from the bottom surface, and let the discharge port part tied by the first binding device hang down from the bottom surface.

‧Unlock the first binding device from the hanging discharge port to open the discharge path.

According to the present invention, the discharge port of the inner bag protruding from the bottom surface of the outer bag is covered by the cover installed on the outer side of the bottom surface. Therefore, when the flexible container is unsealed, the operator can easily detach the lid from the side of the flexible container downward. In addition, the operator stretches out his hand from the same side, and releases the first binding tool that binds it from the discharge port of the inner bag to open the discharge port. Therefore, the operator does not have to stand under the flexible container to open the discharge port, and may open the seal from the side. Therefore, it is easy to open the flexible container.

Also, according to the above second viewpoint, the discharge port of the inner bag is turned back to one side and then tightened (or turned back after tightening), and tied with the first binding device to maintain its state, except when it is opened. The outlet portion in the tied state is folded and covered with a cover. The discharge port of the inner bag is located near the lower end of the inner bag and the outer bag, and when the flexible container is suspended for transportation, it is easy to shake to the left and right (that is, it is easy to loosen), and it is easy to interfere with the lid. part. When the discharge port and the cover are excessively interfered, it may be Open the cover accidentally. However, according to the second point of view above, in addition to unsealing, since the discharge port is bound with the first binding tool in the folded state, the position that becomes the lowest end of the discharge port becomes slightly higher, making it difficult to contact Cover interference. Therefore, even if the discharge port covered by the cover is loose during transportation, the cover can be prevented from being accidentally opened.

1: Flexible container

2: Outer bag

20: Body part

21: Upper surface part

21a: opening

22: bottom face

22a: opening

23: Side surface part

23a: bag

24: Corolla cover

24a: petal part

24b: cord

24c: Slider

24d: opening

25: Filling the mouth cover

26: Outlet cover

3: inner bag

31: Fill the mouth

32: Outlet Department

35: frame belt

35a: middle part

35b: Hooked equipment

35c: lower part

36: rope strap

4: inner cover

40: Bundling tool (first binding tool)

41: rope strap

42: Velcro

43: Velcro

45: binding tool (2nd binding tool)

48: Hooked

5: cover

5a: inner surface

51: Velcro

52: Velcro

7: Hanger

70: Fastener

71: rope strap

72: Slider

73: Locking member

74: Rope

A1: Central axis

P1: Fill port

P2: discharge port

R1: Put into the road

R2: discharge path

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

Fig. 2 is a diagram showing a state where the discharge port is folded back and fixed with a binding tool.

Fig. 3 is a bottom view of the flexible container with the lid installed.

Fig. 4 is a bottom view of the flexible container with the lid removed about halfway.

Fig. 5 is a plan view of the outer bag with the corolla cap closed.

Fig. 6 is a partial cross-sectional view showing a state in which a flexible container is suspended from above by a suspender.

Fig. 7 is a partial cross-sectional view showing a state where the hooked device of the filling port is not hooked on the hanging device, but the flexible container is suspended from above by the hanging device.

Fig. 8 is a diagram showing a binding tool of a modified example.

Fig. 9 is a diagram showing a method of binding the discharge port in a modification.

Detailed description of the preferred embodiment

Hereinafter, referring to the drawings, the flexibility of an embodiment of the present invention will be explained. container.

<1. The overall composition of the flexible container>

Fig. 1 is a side view showing a flexible container (hereinafter, sometimes referred to simply as a container) 1 of the present embodiment (however, the cap 5 described later is omitted). The flexible container 1 is a container for accommodating contents, and for storing and transporting contents. As the name suggests, the flexible container 1 is made of soft material. Therefore, the container 1 is three-dimensionally unfolded in a state filled with contents, but can be folded into a flat shape when in a clear state. The upper part and the lower part of the flexible container 1 are folded in a predetermined method described later, and the shape is arranged. In FIG. 1, the upper part and the lower part of the container 1 are shown in an unfolded state. The type of the content filled in the container 1 is not particularly limited, and is typically powder or grain, cereals, vegetables, etc., in the present embodiment, it is water-absorbent resin particles (small round particles).

The flexible container 1 has a two-layer structure, and includes an outer bag 2 and an inner bag 3 housed in the outer bag 2 (refer to FIG. 6). The content is filled inside the inner bag 3. The body portion 20 of the outer bag 2 has an upper surface portion 21, a bottom surface portion 22 and a side surface portion 23. In this embodiment, the upper surface part 21 and the bottom surface part 22 are square. That is, the main body portion 20 of the outer bag 2 has a substantially cubic shape, and the side surface portion 23 includes four rectangular side surface portions. To the side surface portion 23, a bag 23a into which a label or the like is inserted is attached. An opening (hereinafter referred to as an upper opening) 21 a is formed in the center of the upper surface portion 21. Similarly, an opening (hereinafter referred to as a lower opening) 22a is formed in the center of the bottom surface portion 22. The openings 21a and 22a are both circular in this embodiment. Furthermore, the openings 21a and 22a are not visible in the side view of FIG. 1, but for reference, their positions are shaded. The main body portion 20, the upper surface portion 21, the bottom surface portion 22 and the openings 21a, 22a are arranged coaxially. The common central axis is represented by the symbol A1.

The inner bag 3 is cylindrical. The upper part of the inner bag 3 protrudes above the upper surface part 21 via the upper opening 21a, and the filling opening part 31 of a content is formed. Moreover, the lower part of the inner bag 3 protrudes below the bottom surface part 22 via the lower opening 22a, and the discharge port part 32 of a content is formed. The content is filled in the inner bag 3 through the filling port 31 and discharged from the inner bag 3 through the discharge port 32. That is, the filling port 31 forms an input path R1 for filling the contents in the inner bag 3, and the discharge port 32 forms a discharge path R2 for discharging the contents from the inner bag 3.

The outer bag 2 has a cylindrical filling opening cover 25 that protrudes above the upper surface portion 21 from the upper opening 21a, and further has a cylindrical discharge opening lid 26 that protrudes downward from the lower opening 22a. The filling opening cover 25 is a cover for covering the filling opening 31 of the inner bag 3 that protrudes from the upper surface portion 21 through the upper opening 21a from the outside, and the discharge port cover 26 is covering the inner bag that protrudes from the bottom face 22 through the lower opening 22a from the outside. 3 of the cover of the outlet portion 32. The filling port cover 25 is fixed to the upper surface portion 21 in a manner of being sewn, etc., and is arranged to stand upright from the vicinity of the edge defining the upper opening 21a. The cross-sectional shape of the filling port cap 25 and the upper opening 21a are circular with approximately the same size. Similarly, the discharge port cover 26 is fixed to the bottom surface portion 22 in a manner of being sewn, etc., and is arranged to stand upright from the vicinity of the edge defining the lower opening 22a. The cross-sectional shape of the discharge port cover 26 and the lower opening 22a are circular in approximately the same size.

The diameter of the body portion 20 of the outer bag 2 is larger than the filling opening cover 25 and the discharge opening cover 26. In addition, the inner bag 3 has a fixed diameter in the direction of the central axis A1, and its diameter is larger than the diameters of the filling port cap 25 and the discharge port cap 26. Therefore, when the upper portion (filling port 31) of the inner bag 3 is accommodated in the outer bag 2, wrinkles are formed and the diameter is reduced. Similarly, the lower part of the inner bag 3 (discharge port 32) will also form wrinkles when being accommodated in the outer bag 2, and the diameter will be reduced. As described above, since the filling port 31 and the filling port cover 25 form a filling port together, the filling port 31 and the filling port cover 25 may be collectively referred to as the filling port P1 in the following. Similarly, since the discharge port portion 32 and the discharge port cover 26 form a discharge port together, in the following, the discharge port portion 32 and the discharge port cover 26 may be collectively referred to as a discharge port P2.

<1-1. Composition near the discharge port>

Next, the structure in the vicinity of the discharge port P2 will be described. The discharge port P2 is bound by a binding device 40 (first binding device) to close the discharge path R2. In this embodiment, the binding tool 40 is fixed to the outer surface of the discharge port cover 26 as shown in FIG. 1. The binding tool 40 is a band-shaped member (hereinafter referred to as a string) 41 having hooks 42 and 43. The cord 41 is attached in a state where the discharge port P2 is not bound, and is sewn to the vicinity of the center of the discharge port cover 26 in the upper and lower direction so as to extend in the horizontal direction. The hook and loop fasteners 42 and 43 have a structure in which they are adhered to each other, and are arranged at intervals along the longitudinal direction of the cord 41. Furthermore, in FIGS. 1 and 2, the position of the hook and loop fastener 43 that is originally invisible because it is arranged on the opposite side of the cord belt 41 is shown as a reference.

To close the discharge path R2, first, the discharge port portion 32 is tightened together with the discharge port cover 26 covering the discharge port portion 32 to close the discharge path R2. Thereafter, as shown in FIG. 2, the discharge port portion 32 and the discharge port cover 26 are folded back toward one side, and the discharge port P2 is bound with the binding tool 40 to maintain the folded state. Figure 2 shows that the discharge port P2 is folded back and fixed with a binding device 40 In the same way. At this time, the lower end of the discharge port P2 is bent upward, thereby being wound by the cord 41 at the position facing each other. Next, by the hooks 42 and 43 fixed to the cord 41, the wound state of the cord 41 is fixed.

3 and 4 are bottom views of the flexible container 1. As shown in the figure, the flexible container 1 is provided with a lid 5, and the lid 5 is detachably attached to the bottom surface 22 to open and close the lower opening 22a. The cover 5 is attached to the outside of the bottom surface part 22 when closing the lower opening 22a. The cover 5 has a sheet shape and is rectangular in this embodiment. In the inner surface 5a of the cover 5 facing the bottom surface 22, the hooks 51 are fixed at substantially equal intervals along the outer peripheral portion in a manner of being sewn or the like. On the other hand, the hook and loop fastener 52 is fixed to a portion of the bottom surface 22 facing the hook and loop fastener 51 in a manner such as sewing. Then, the cover 5 is installed on the bottom surface 22 by bonding the fasteners 51 and 52 to each other. Furthermore, in FIGS. 3 and 4, the position of the Velcro 51 installed on the inner surface of the cover 5 and not visible from the outside is shown as a reference.

When the cover 5 is installed on the bottom surface 22, the entire discharge port P2 is covered by the cover 5 and cannot be seen from the outside. More specifically, the discharge port P2 is bound by the binding tool 40 and folded, and the cover 5 is installed on the bottom surface 22 to cover the folded discharge port P2. At this time, the discharge port P2 is accommodated and sandwiched between the cover 5 and the bottom surface 22. Fig. 4 is a bottom view of the flexible container 1 in a state where the cover 5 is detached about half. As shown in FIG. 4, when the cover 5 is removed from the bottom surface 22, the discharge port P2 in the state bound by the binding tool 40 is exposed from the bottom surface 22. At this time, the discharge port P2 sags down due to gravity, and becomes the state of FIG. 2 when viewed from the side.

<1-2. Composition near the filling port>

Next, the structure near the filling port P1 will be described. Fill port P1 It is bound by the binding device 45 (the second binding device) to close the input road R1. In this embodiment, the binding tool 45 is fixed to the outer surface of the filling opening cover 25 as shown in FIG. 1. The binding tool 45 is a string-shaped member. The binding tool 45 is installed in a state of being sewn to the vicinity of the center of the filling port cover 25 in the upper and lower direction, etc., so as to extend in the horizontal direction in a state where the filling port P1 is not bound.

To close the injection path R1, first, the filling port 31 is tightened together with the filling port cap 25 covering the filling port 31 to close the injection path R1. Thereafter, the binding tool 45 wraps around the filling port P1 to maintain the tightened state. At this time, the binding tool 45 is tied by a method such as a bow tie. More specifically, it may also have a configuration in which the filling port cap 25 and the filling port portion 31 are tied together with a single knot, and thereafter, the filling port cap 25 protrudes from the filling port cap 25 with the tip of the filling port portion 31 downward. The mouth part 31 is folded back toward one side, and the folded part of the filling mouth part 31 and the filling mouth cover 25 are tied with a bow knot.

The outer bag 2 has a corolla cap (hereinafter referred to as a corolla cap) 24 for opening and closing the upper opening 21a. Fig. 5 is a plan view of the outer bag 2 in a state where the corolla cover 24 is closed. The corolla cover 24 includes a plurality of petal-shaped parts (hereinafter referred to as petal parts) 24a. The petal parts 24a are arranged radially around the central axis A1 in the closed state of the corolla cover 24, and cover the upper opening 21a except for the central part. The petal parts 24a have the same shape as each other, and each is slightly trapezoidal, but the bottom edge 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 with the edge of the upper surface portion 21 that defines the upper opening 21a.

In the vicinity of the inner end of the petal portion 24a, there is formed a string passage that extends in the circumferential direction with respect to the central axis A1, and a string 24b is inserted Through these channels. The two ends of the cord 24b that is not inserted into the cord passage are collected by the slider 24c. Then, the slider 24c moves along the bundle of the two cords 24b, thereby opening and closing the corolla cover 24. Specifically, the slider 24c is moved to make the loop formed by the cord 24b smaller, that is, when the cord 24b is tied, the petal part 24a will fall down and expand in the same plane as the upper surface part 21 to become Figure 5 shows the closed state. On the other hand, when the slider 24c is moved to enlarge the loop formed by the cord 24b, that is, when the cord 24b is loosened, as shown in FIG. 1, the petal portion 24a can be made to stand upright in the vertical direction.

As shown in FIG. 1, the filling opening cover 25 is arranged inside the corolla cover 24. That is, the corolla cover 24 is fixed to the upper surface portion 21 so as to surround the filling opening cover 25 from the outside. In addition, the inner cover 4 is arranged outside the filling opening cover 25 and inside the corolla cover 24. The inner cover 4 is also surrounded by the corolla cover 24 from the outside. The filling port P1 bound by the binding device 45 can be appropriately folded and accommodated in the inner side of the corolla cover 24, and then the corolla cover 24 is closed. At this time, the inner cover 4 covers the filling port P1 from the upper side in the inner side of the corolla cover 24. Furthermore, the corolla cover 24 does not need to be completely closed as shown in FIG. 5. That is, the filling port P1 may partially protrude from the opening 24d formed in the center of the corolla cover 24.

The container 1 further has a hook 48 fixed to the binding device 45. In the present embodiment, the hook 48 is composed of a cord formed in a loop shape. The hook 48 is a member for hooking the hook 7 that suspends the flexible container 1 from above. FIG. 6 shows the state when the flexible container 1 is hung from above compared to the hooking tool 48 being hung on the suspending tool 7. The hook 48 is when the filling port P1 is accommodated in the corolla cover 24, it is pulled out from the opening 24d in the center of the corolla cover 24 to the outside, and is hooked on the hanging tool 7. Furthermore, hanging Tool 7 is a typical hook.

Furthermore, as shown in FIG. 6, in addition to the hook 48, a plurality of hooks 35 b fixed to the outer bag 2 are also hooked on the sling 7. The hook 35b corresponds to the upper part of the elongated belt-shaped member (hereinafter referred to as the frame belt) 35 arranged in the four corners of the outer bag 2. More specifically, the middle portions 35a of the four frame bands 35 are sewn to the side surface portions 23 or the like so as to extend in the vertical direction along the boundary of the side surface portions 23 on the four sides of the outer bag 2. The upper part of the frame band 35 is formed to maintain a loop shape, and this becomes the hook 35b. On the other hand, as shown in FIGS. 3 and 4, the lower portions 35c of the four frame belts 35 are bent along the bottom surface 22, extend toward the center of the bottom surface 22, and are arranged radially as a whole. The lower part 35c is fixed to the bottom surface 22 in a manner such as sewing. The innermost end of the lower part 35c does not reach the lower opening 22a and the cover 5. In addition, the innermost end of the lower portion 35c is also formed in a loop shape, and the cord 36 is inserted into the holes of the loops. When the content is filled in the inner bag 3 and the body portion 20 of the outer bag 2 is roughly cubic, the string 36 is stretched toward the four corners of the bottom portion 22 by the lower portion 35c of the frame belt 35. With this tension, the cord 36 is spread out in a substantially square shape, whereby the bottom surface 22 of the container 1 containing the contents maintains a flat shape.

<2. How to use flexible container>

Next, the method of using the above-mentioned flexible container 1 will be described. Hereinafter, the method of preparing the empty flexible container 1 (the manufacturing method of the flexible container 1) and the method of filling the empty flexible container 1 (the method of filling the flexible container 1 with the contents) The manufacturing method) and the method of opening the flexible container 1 will be described in order.

<2-1. Manufacturing method of empty flexible container>

First, prepare the outer bag 2 and the inner bag 3, and place the inner bag 3 in the outer bag 2. Furthermore, the filling opening 31 on the upper part of the inner bag 3 is inserted into the upper opening 21a of the upper surface part 21 of the outer bag 2 and the filling opening cap 25, and it is pulled out from the upper end of the filling opening cap 25 to be slightly exposed. Thereby, the filling port 31 protruding above the upper surface part 21 through the upper opening 21a and the filling port cover 25 form the filling port P1. Similarly, the discharge port 32 at the lower part of the inner bag 3 is inserted into the lower opening 22a of the bottom surface portion 22 of the outer bag 2 and the discharge port cover 26, and is pulled out from the lower end of the discharge port cover 26 to be slightly exposed. Thereby, a discharge port P2 is formed by the discharge port portion 32 protruding below the bottom surface portion 22 through the lower opening 22a, and the discharge port cover 26.

Then, the discharge port P2 is closed. Specifically, after the discharge port P2 is tightened to close the discharge path R2 formed inside the discharge port portion 32, the elongated discharge port P2 is turned back toward one side. Then, the binding tool 40 is tightly wound around the discharge port P2 so as to surround the turned-back discharge port P2 from the outside, and then the buckles 42 and 43 are used to fasten the wound state. Then, the discharge port P2 is further folded, and the cover 5 is installed on the bottom surface 22 to cover the folded discharge port P2. At this time, the Velcro 52 of the bottom surface 22 and the Velcro 51 of the cover 5 are aligned, and the cover 5 is adhered to the outer surface of the bottom surface 22. Thereby, the lower opening 22a is closed, and the discharge port P2 is accommodated inside the cover 5. With the above, the bottom surface of the flexible container 1 is formed, and the flexible container 1 that can be filled with the content from the filling port P1 is manufactured.

<2-2. Manufacturing method of flexible container with contents>

Secondly, fill the content in the empty space prepared as described above. The method of container 1 will be described. First, the empty container 1 is placed under a device (hereinafter, referred to as a supply device) such as a hopper for supplying contents in a ready state with the upper surface portion 21 facing upward. Next, the hook 35b of the four corners 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 member 24c is loosened, the corolla cover 24 is opened, and the inner cover 4 is also opened, and the filling port P1 is opened as much as possible into a cylindrical shape. Thereby, the input path R1 is opened upwards, that is, toward the discharge port for discharging the contents in the supply device. Next, the discharge port of the supply device is inserted into the input path R1. Next, by opening the discharge port of the supply device, the content is injected from the supply device into the inner bag 3 via the injection path R1.

After filling the contents, the filling port P1 is closed. Specifically, the filling port P1 is tightened to close the input path R1 formed inside the filling port 31. Then, the binding tool 45 is tightly wound around the filling port P1 from the outside, and then the binding tool 45 is tied to tighten the winding state. Then, the filling port P1 is folded so that the inner cover 4 is placed on it, and the corolla cover 24 is closed. Thereby, the upper opening 21a is closed, and the filling port P1 is accommodated in the inner side of the corolla cover 24. At this time, from the opening 24d in the center of the corolla cover 24, the hook 48 fixed to the binding device 45 is pulled out to the outside. Through the above, the flexible container 1 containing the contents is manufactured.

The flexible container 1 containing the contents is stored in an appropriate storage place and transported as needed. When the flexible container 1 is moved during transportation, etc., it can be placed on a pallet and transported by a transport device such as a stacker. In addition, a transport device such as a crane having a sling such as a hook can be used. That is, by driving in the state of being hooked by the hook 35b on the sling of the conveying device The movable conveying device can easily move the flexible container 1.

<2-3. How to open a flexible container>

Next, the method of opening the flexible container 1 containing the contents will be explained. First, the container 1 containing the contents is arranged above a device such as a hopper for supplying contents (hereinafter referred to as a supplied device) in a ready state with the bottom surface 22 facing downward. Next, the hook 35b of the four corners of the outer bag 2 is hooked to a hook 7 such as a hook of a special hanging device (for example, an elevator), and the flexible container 1 is suspended from above. In addition, at this time, the hook 48 fixed to the binding tool 45 wound around the filling port P1 is also hooked to the sling 7 of the suspending device. Then, the operator stands on the side of the flexible container 1, reaches below the bottom surface 22, and removes the cover 5. Furthermore, with the structure of the cover 5 as described above, at this time, the cover 5 can be removed by one touch. At the same time when the cover 5 is removed, the discharge port P2 in the state of being bound by the binding device 40 automatically hangs down from the bottom surface 22 as shown in FIG. 2 by the weight of the discharge port P2.

Next, the operator stands on the side of the flexible container 1 and stretches his hand under the flexible container 1 to untie the binding tool 40 of the hanging discharge port P2. Furthermore, with the above-mentioned configuration of the binding tool 40, at this time, the binding tool 40 can be untied in one motion. Thereby, the discharge port P2 whose lower end is folded upwards extends straight downward due to its own weight. As a result, the discharge path R2 faces downward, that is, it is opened to a large extent toward the input port for receiving the content in the supplied device, and the content is injected into the supplied device through the discharge path R2.

FIG. 7 shows a state where the hook 48 is not hooked on the sling 7, but the flexible container 1 is suspended from above by the sling picture. It can be seen from the comparison between FIGS. 6 and 7 that in the example of FIG. 7, the inner bag 3 stretches the upper surface portion 21 downward due to the weight of the content, and therefore the inner bag 3 sinks. In particular, when the content gradually decreases, the swelling of the inner bag 3 gradually disappears, and the inner bag 3 becomes longer in the vertical direction, so that the lower end of the inner bag 3 gradually hangs downward. At this time, according to the positional relationship between the supplied device and the container 1, the lower portion of the inner bag 3 is inserted into the input port of the supplied device, which prevents the discharge of the contents. Therefore, as shown in Fig. 6, it is advisable to hook the hook 48 on the sling first, so that the lower end of the inner bag 3 does not hang up and down.

<3. Modifications>

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

<3-1>

In the above-mentioned embodiment, the main body portion 20 of the outer bag 2 is formed in a square tube shape, but it is not limited to this, and for example, it may be formed in a cylindrical shape.

<3-2>

The shape of the openings 21a and 22a is not particularly limited. In the above-mentioned embodiment, they are circular, but they may be elliptical, quadrangular, etc., for example. Furthermore, if the shapes of the openings 21a and 22a are changed, the shapes of the filling port cap 25 and the discharge port cap 26 should also be appropriately changed to the same shape in accordance with the shape of the opening. In addition, the shape of the cover 5 is not particularly limited, and may be, for example, a circular shape, an elliptical shape, or the like.

<3-3>

The structure of the binding device 40 is not limited to the above, and can be the same as the binding device 45. It can be a cord 41 without the buckles 42, 43, or it can be fixed. The cord 41 with buttons (including snap buttons) in the wound state. Furthermore, if it is a simple string, it can be made into a bow like the binding tool 45.

In addition, for other examples, the binding tool 40 may also be a fastening tool 70 as shown in FIG. 8. The fastening tool 70 includes a cord 71 and a sliding member 72 through which both ends of the cord 71 pass in parallel. A loop is formed by the strap 71 and the slider 72, and the bound discharge port P2 is inserted into the loop. The slider 72 is configured to be movable along the cords 71 and 71. In addition, the slider 72 is provided with a locking member 73 that is locked so as to be unable to move along the cords 71 and 71. A cord 74 is attached to the end of the locking member 73. Then, when the cord belt 74 is stretched, the locking member 73 moves to release the lock, and the slider 72 can move relative to the cord belt 71. Furthermore, when the lock is released, the lock member 73 will be combined with the slider 72 and will not fall off from the slider 72. Therefore, when the rope belt 74 is further stretched and the slider 72 is stretched via the locking member 73, the loop formed by the rope belt 71 and the slider 72 will expand. Therefore, the cord 71 is detached from the discharge port P2, and the binding is untied. Furthermore, it is preferable that the cord 71 is first fixed to the outer bag 2 in the same manner as the above-mentioned binding device 40, so that when the flexible container 1 is unsealed, the fastening device 70 will not be put into the outer bag after the binding is released. Supply equipment, etc.

Similarly, the structure of the binding device 45 is not limited to the above. For example, the binding device 45 may be a cord with a hook and loop fastener, or a button ( The cord 41 including the snap buckle) may also be the buckle 70 as shown in FIG. 8.

In addition, at least one of the binding tools 40 and 45 does not need to be fixed to the filling opening cover 25 and the discharge opening cover 26 respectively, and can be made independent of the outer bag 2 and the inner bag 2 Component of bag 3.

<3-4>

The hook 48 may not be fixed to the binding tool 45, but may be fixed to a portion near the center of the upper portion of the outer bag 2, such as the filling opening cover 25, the corolla cover 24, the inner cover 4, or the upper surface portion 21 near the center. At this time, it is also possible to hook the hook 48 on the sling and suspend the container 1 to prevent the lower end of the inner bag 3 from being fixed and hanging up and down.

<3-5>

The method of attaching the cover 5 to the bottom surface 22 is not limited to the method of using a hook and loop fastener. For example, the two may be fastened by a button. For example, a button may be installed on one of the bottom surface 22 and the cover 5, and a button hole may be formed in the other. In addition, it is also possible to install the protruding piece of the snap button on one of the bottom surface 22 and the cover 5, and install the concave piece on the other.

<3-6>

In the above embodiment, after the discharge port P2 is tightened to close the discharge path R2, the elongated discharge port P2 is folded back toward one side, and the folded and tightened state is fixed by the binding tool 40. However, it is also possible to turn the substantially flat discharge port P2 back toward one side, then tighten the discharge port P2 folded in 2 (or more than 3 folds), and fix the folded and tightened state with the binding tool 40 to seal the discharge. Road R2.

Alternatively, as shown in FIG. 9, after the discharge port P2 is tightened to close the discharge path R2, the discharge port P2 may not be turned back, but the discharge port P2 may be bound by the binding tool 40 to keep the discharge port P2 tightened. Then, if necessary, the drain port P2 can be folded back, and then the drain port P2 is stored in the cover 5. Between and the bottom surface 22.

1‧‧‧Flexible container

22‧‧‧Bottom face

22a‧‧‧Opening

32‧‧‧Exhaust outlet

35c‧‧‧Lower part

36‧‧‧Strap

5‧‧‧cover

5a‧‧‧Inner surface

51‧‧‧Fixture

52‧‧‧Fixture

P2‧‧‧Exhaust port

Claims (16)

A flexible container is a flexible container for accommodating contents. It is provided with: an outer bag with a bottom surface; an inner bag, which is housed in the aforementioned outer bag and can be filled with A cylindrical inner bag; a plurality of frame belts are respectively fixed to the outer bag, and a plurality of frame belts arranged radially in the entire bottom surface of the outer bag, respectively formed from the peripheral edge portion of the bottom surface A loop extending in the center; and a loop-shaped rope strap inserted in a plurality of the foregoing loops. The flexible container of claim 1, wherein the bottom portion of the outer bag is formed with a lower opening, the inner bag has a discharge port, and the discharge port forms a discharge path for discharging the contents and passes through The lower opening extends below the bottom surface, and the flexible container is further equipped with: a first binding device that binds the discharge port to close the discharge path; and a cover installed on the outside of the bottom surface to Covers the discharge port, the discharge port is screwed to close the discharge path, the first binding device binds the discharge port to keep the discharge port in a tightened state, and the cover is attached to the bottom surface The outside is to cover the discharge port portion bound by the first binding tool. For example, the flexible container of claim 2, wherein the discharge port is tightened to close the discharge path and then turned back toward one side, or turned back toward the other side to close the discharge path and then tightened, and the first binding device is a binding The discharge port portion maintains the state where the discharge port portion is folded back to one side and is tightened, and the cover is attached to the outer side of the bottom surface to cover the discharge port portion folded after being bound by the first binding device. According to claim 2 or 3, the flexible container is structured such that when the cover is removed from the bottom surface, the discharge port in the state bound by the first binding device hangs down from the bottom surface. The flexible container of claim 2 or 3, wherein the lid is configured to be installed on the bottom surface by a hook and loop fastener. The flexible container of claim 2 or 3, wherein the first binding device is a belt-shaped member with a hook and loop fastener. The flexible container of claim 2 or 3, wherein the outer bag further has a discharge port cover surrounding the discharge port, and the discharge port cover is fixed to the aforementioned bottom opening in a manner protruding from the lower opening to below the bottom surface On the bottom surface, the first binding tool is fixed to the discharge port cover. The flexible container of claim 1 or 2, wherein the outer bag further has an upper surface portion formed with an upper opening, the inner bag further has a filling opening, and the filling opening forms an input path for filling the contents , And extend above the upper surface part through the upper opening. For example, the flexible container of claim 8 is further provided with a second binding device, and the second binding device is used to bind the filling opening to close the input path. The flexible container of claim 9, wherein the outer bag further has a filling mouth cover surrounding the filling opening, and the filling mouth cover is fixed to the upper surface in a manner protruding from the upper opening to above the upper surface part Part, the second binding tool is fixed to the filling opening cover. For example, the flexible container of claim 9 is further equipped with a hook which is fixed to the second binding tool or a part near the center of the upper part of the outer bag, and can be hooked and hung from above. Hanger for hanging the aforementioned flexible container. The flexible container of claim 1 or 2, wherein the aforementioned content is water-absorbent resin particles. A method for manufacturing a flexible container for accommodating contents includes the following steps: preparing an outer bag, the outer bag having a bottom surface formed with a lower opening; and fixing the plurality of frame belts to the outer bag Prepare an inner bag, the inner bag is a cylindrical inner bag that can be filled with the contents, and has a discharge port, the discharge port forms a discharge path for the contents to be discharged; with the discharge port Place the inner bag in the outer bag in a way that extends below the bottom face through the lower opening; Tighten the discharge port to close the discharge path; use the first binding tool to bind the discharge port to keep the discharge port in a tightly tightened state; and install a cover on the outside of the bottom surface to cover the cover The step of fixing the plurality of frame bands to the discharge port portion bound by the first binding device includes the following steps: the plurality of frame bands are arranged radially on the bottom surface of the outer bag as a whole, and the plurality of frames The frame band is fixed to the outer bag so as to form a loop extending from the peripheral edge portion of the bottom surface toward the center, and a loop-shaped cord is inserted into the plurality of loops. For example, the method for manufacturing a flexible container for accommodating contents of claim 13, wherein the outer bag further has an upper surface portion formed with an upper opening, the inner bag has a filling opening, and the filling opening is formed to be useful The input path for filling the contents, and the step of accommodating the inner bag in the outer bag includes the following steps: the filling port protrudes above the upper surface portion through the upper opening, and the The inner bag is contained in the aforementioned outer bag. A method for manufacturing a flexible container filled with contents includes the following steps: using the manufacturing method as claimed in claim 14 to manufacture the aforementioned flexible container; The contents are filled in the inner bag; and after the contents are filled, the input path is closed. A method for unsealing a flexible container with contents, including the following steps: use the manufacturing method as in claim 15 to manufacture the aforementioned flexible container with contents; suspend the aforementioned flexible container with contents Flexible container; remove the cover from the bottom surface, and allow the discharge port portion in the state tied by the first binding device to hang down from the bottom surface; release the first binding by hanging down the discharge port portion Tool, open the aforementioned discharge path.

Images