JPH04242565A - Liquid container - Google Patents

Abstract

PURPOSE:To provide a back-in-box type container from which a liquid inside can be sucked out without leaving the liquid. CONSTITUTION:A passage plate 17 which has numerous protuberances 19, a main through hole 21 and numerous auxiliary through holes is arranged in an inner bag 12 in such a manner that the passage plate 17 covers a pour-out port 13, which is fixed on the inner bag 12, and a liquid in the inner bag 12 is guided to a liquid passage 20 under the passage plate 17 through the main through hole 21 and auxiliary through holes and is discharged from the pour-out port 13. By this method, an upper part 12b of the inner bag 12, which is deformed due to liquid suction is supported by the passage plate 17, and the liquid passage 20 is always ensured under the passage plate, and almost all the liquid in the inner bag can be sucked and discharged.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to liquid containers, and more particularly to a bag-in-box type liquid container having a flexible inner bag housed within an outer box.

0002

2. Description of the Related Art Conventionally, as shown in FIG. 13, a flexible inner bag 2 made of plastic film or the like is housed in an outer box 1 made of paper, cardboard, plastic, etc. A bag-in-box is used in which a spout 3 fixed to the outer box 1 is extended outside the outer box 1, and a liquid content 4 such as juice is stored in the inner bag 2. In this bag-in-box, the spout 3 is usually connected to a connector connected to a pump, and the contents are sucked out from the spout 3, but the inner bag deforms and the contents are removed as the contents are taken out. The internal volume of the inner bag is reduced.

0003

[Problems to be Solved by the Invention] However, when the contents are simply sucked out from the spout 3, the contents inside the inner bag are locally sucked, and the inner bag is more likely to wrinkle. There is a problem in that before the object is taken out, a part of the inner bag comes into close contact with the spout, trapping the contents, making it impossible to take out the contents. This problem becomes particularly noticeable when a highly viscous material, such as ink, is contained. That is, when high viscosity ink is stored as the content 4, when the content 4 is sucked out from the spout 3, the ink is difficult to flow within the inner bag 2.
The ink near the spout is mainly sucked, and the upper part of the flexible inner bag 2 is deformed as shown by the two-dot chain line 2a, and the spout 3 is closed at an early stage, or the two-dot chain line 2b
As shown in the figure, the films of the inner bag stuck together near the spout, blocking the flow of the contents to the spout, and it was no longer possible to aspirate the contents.

The present invention has been made in view of these problems, and it is an object of the present invention to provide a bag-in-box type liquid container that can effectively take out even highly viscous ink and can reduce the amount of residual ink. purpose.

[0005]

[Means for Solving the Problems] The present invention has been made to achieve the above objects, and includes an outer box having at least one flat surface, a flexible inner bag housed within the outer box, and a flexible inner bag housed within the outer box. It has a spout fixed to the inner bag and attached to extend from the flat surface to the outside of the outer box, and a passage plate fixedly provided inside the inner bag so as to cover the spout, The gist of the present invention is a liquid container characterized in that the passage plate has a plurality of convex portions protruding toward the spout side.

[0006] Here, it is preferable that the spout is arranged approximately at the center of the flat surface of the outer box. Further, it is preferable that the passage plate has a size slightly smaller than the flat surface of the outer box on which the spout is arranged. Furthermore, a main through hole is formed in the passage plate at a position facing the spout, and a large number of auxiliary through holes are formed in almost the entire area excluding the periphery of the main through hole and at positions where there are no convex parts. It is preferable to keep it.

[0007] Furthermore, it is preferable that approximately half of the inner bag on the side where the spout is attached is fixed to the inner surface of the outer box.

The spout used in the present invention has a spout body attached to a flexible inner bag and a cap that is detachable from the spout body, and the spout body has a viscous Preferably, the pores are formed to allow the high liquid to slowly flow out, and further preferably, the pores are formed between a plurality of elastically deformable tongues.

[0009]

[Function] The liquid container of the present invention has a passage plate having a large number of protrusions on the spout side so as to cover the spout in the inner bag, so when taking out liquid from the inner bag, the passage plate has a convex part. A liquid passage is formed between the part and the convex part, and a liquid passage is formed from the through hole formed in the passage plate and the periphery of the passage plate to the spout, and liquid is sucked relatively uniformly from the entire inner bag. Moreover, even if a part of the inner bag quickly deforms and approaches the wall on the spout side, the passage plate supports the inner bag, so the liquid passage leading to the spout will not be blocked, and the inner bag will remain inside the inner bag. It is possible to remove most of the liquid at a constant rate.

[0010] As mentioned above, if the spout is placed approximately in the center of the flat surface of the outer box, the deformation (shrinkage) of the inner bag due to liquid extraction can be made approximately equal on the left and right sides. It becomes easier. In addition, if the passage board is made slightly smaller than the flat surface of the outer box where the spout is placed, the passage board will cover almost the entire flat surface where the spout is placed, and the bottom surface of the passage plate will be covered. A liquid passage can be secured, and a liquid passage can be formed between the entire periphery of the passage plate and the inner bag.
The liquid inside the inner bag can be taken out more reliably. Furthermore, if the main through hole is provided in the position facing the spout of the passage plate, and the auxiliary through hole is provided in almost the entire other area, the liquid in the inner bag will be distributed extremely uniformly from almost the entire surface of the passage plate. The liquid is sucked into the passage, and the liquid is drawn relatively uniformly from the entire inner bag. For this reason, the inner bag is deformed as a whole, and liquid extraction becomes more stable, which is preferable.

[0011] Furthermore, if approximately half of the inner bag on the side where the spout is attached is fixed to the inner surface of the outer box, the inner bag can be Since only the unfixed side is deformed, deformation occurs stably, the internal volume can be fully used when filling liquid, the remaining amount can be reduced when taking out liquid, and variations between products can be reduced.

Furthermore, if a small-area pore is formed in the spout, the cap of the spout can be removed, the spout can be turned downward or sideways, and connected to a waiting connector facing upward or sideways. When using a liquid with a high viscosity, it will only slowly flow out of the pores of the spout, and will not flow out of the spout in the short time it takes to complete the connection to the connector, thus leaving the surrounding area with liquid. It is possible to connect the spout to the connector without getting it dirty. After connecting to the connector, the liquid inside the inner bag can be sucked and discharged through the pores. Here, if this pore is formed between a large number of elastically deformable tongues, when the liquid inside the inner bag is sucked out, the multiple tongues will be deformed by the suction force, and the pore will open. The opening area is expanded, making it easier to aspirate and take out liquid. In addition, if the tip of the connector is made long enough to be inserted into the spout until the tongue is inserted, when the spout is connected to the connector, the connector tip will go deep into the spout and the tongue will be removed. Since it is pushed inward and the opening area of the pore is increased, the liquid can be easily sucked and taken out.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention shown in the drawings will be described below. FIG. 1 is a schematic sectional view of a liquid container (hereinafter referred to as an ink container) according to an embodiment in which the present invention is applied to an ink storage container, and FIG. 2 is a schematic sectional view of the ink container taken in a direction different from that in FIG. 1. FIG. 3 is a perspective view schematically showing the entire ink container. The ink container, which is generally designated by the reference numeral 10, includes a rectangular outer box 11 and a flexible inner bag 12 housed therein. is installed. This spout 13
is arranged so as to extend outward from one flat surface 11a of the outer case 11, and is fixed to the outer case 11. The mounting position of the spout 13 on the flat surface 11a is not particularly limited, but as shown in the figure, the mounting position on the flat surface 11a is
It is preferable to set it on the center line of a, and it is even more preferable to set it at the center on the center line. With this configuration,
As will be described later, when taking out the liquid from the inner bag 12, it is easy to take out the liquid from the front, back, left and right sides in a well-balanced manner, and therefore the inner bag 12 can be deflated in a well-balanced manner from the front, back, left and right. The inner bag 12 has two upper and lower parts 12a,
For convenience, the lower portion 12a in FIG. 1 will be referred to as the lower portion, and the upper portion 12b will be referred to as the upper portion. The part of the inner bag 12 on the side where the spout 13 is attached, that is, the lower part 12a, is fixed to the flat surface 11a of the outer box 11 and the surrounding flat surface 11b by suitable adhesive means, for example, double-sided tape 15. ing. Alternatively, it may be fixed with an adhesive such as hot melt. On the other hand, the upper portion 12b is free. In this way, the lower portion 12a of the inner bag 12
If the is fixed to the outer box 11, when filling the inner bag with ink,
Or, when taking out ink from the inner bag, the upper part 12 of the inner bag
Only b is deformed, and the position of the periphery of the upper part 12b (junction with the lower part 12a) is restrained, so the deformation of the inner bag occurs stably and the remaining amount of contents becomes uniform. (
The advantage is that there is less variation between products.

[0014] The outer box 11 and inner bag 12 used here are not particularly limited, and conventionally known ones can be used as appropriate. For example, the outer box 11 may be made of paper;
Cardboard, plastic, metal, etc. can be used.
Further, as the inner bag 12, a single layer film or a laminated film of plastic, or a laminated film of plastic, paper, metal foil, etc. can be used. Moreover, as the spout 13,
Plastic molded products can be used.

A passage plate 17 is disposed inside the inner bag 12 so as to cover the spout 13 and is fixed to the inner bag 12. This passage plate 17 has an area that is slightly smaller than the flat surface 11a to which the spout 13 is attached (for example, an area that is several mm smaller at each end of the passage plate 17 in the vertical and horizontal directions).
The edge of the entire circumference and the side surface 1 of the outer box 11
An appropriate ink passage 1 is provided between the inner bag 12 and the inner bag 12 which is restrained by 1b.
They are arranged to form 8. In addition, the passage board 17
Although the size is not limited to this size, if it is this size, it will support almost the entire area of the upper part 12b of the inner bag when suctioning the ink inside as will be described later. It is possible to prevent the passage plate 17 from coming into close contact with the lower part 12a located above the inner bag 11a, and even if there is a dimensional error when fixing the passage plate 17 to the inner bag 12 and setting it inside the outer box 11, the passage plate 17 This is preferable because it does not hit the side surface 11b of the outer box 11 and cannot be properly inserted, and the manufacturing process becomes easier.

As shown in an enlarged view in FIG. 4, the passage plate 17 has a flat base portion 17a and a large number of independent rectangular shapes provided almost uniformly over the entire area of the base portion 17a so as to protrude from one surface of the flat base portion 17a. It has a convex part 19, and as shown in FIGS. 1 and 2, it is attached by placing the convex part 19 on the lower part 12a of the inner bag 12 and on the flange 13a of the spout 13,
Moreover, it is fixed to the inner bag 12 at an appropriate position. In the case of this embodiment, a total of six locations, including four corner locations and two center locations, of the passage plate 17 are heat-sealed and fixed to the lower portion 12a of the inner bag 12 in a spot shape. Further, the passage plate 17 has no convex portion 19 at a position facing the spout, and has a flat plate shape, so that it absorbs ink more easily than the spout 13. Thus, an ink passage 20 is formed between the base part 17a of the passage plate 17 and the lower part 12a of the inner bag 12, which communicates vertically and laterally by the convex part 19. This ink passage 20 is for flowing ink when it is sucked and taken out from the inner bag 12, and a larger one is preferable for taking out the ink, but conversely, the ink that fills the ink passage 20 is eventually From this point of view, the smaller the better, as it will result in residual ink. The dimensions of the ink passage 20 are determined taking these into consideration. The dimensions of the ink passage 20 vary depending on physical properties such as ink viscosity, but generally the height is 1 to 5 mm and the width is 3 to 5 mm.
The diameter is selected to be approximately 5 mm. However, this is not a limited value. Note that the shape of the convex portion 19 is not limited to the illustrated quadrangle, but can be changed to a circular shape or other shapes.

As shown in FIG. 4, the passage plate 17 has a large main through hole 21 at a position opposite to the spout 13;
A small auxiliary through hole 22 located opposite the ink passage 20
is formed. Although the material and manufacturing method of the passage plate 17 are not particularly limited, it is preferably made by molding plastic. Note that FIG. 4 shows an example of the passage plate 17 made by molding from a plastic sheet, and therefore, recesses 23 are formed on the upper surface side of the base portion 17a in correspondence with the projections. This recess 23 may be left as is, but since it becomes a place for ink to accumulate, it is preferable to cover it by appropriate means, such as pasting a film or sheet. Alternatively, a hole may be made in the side surface of the recess 23 to communicate with the ink passage 20. When manufacturing the passage plate by injection molding, it is naturally preferable that the upper surface of the base portion 17a be flat without any recesses.

Next, a method of using the ink container 10 having the above structure will be explained. When the inner bag 12 is not filled with ink, the upper portion 12b of the inner bag 12 is stuck to the lower portion 12a. This ink container 10 is
ink 24 from the spout 13 with the
Fill it. As the inner bag 12 is filled with ink 24, the inner bag 12 expands. At this time, the lower part 12a of the inner bag 12
Since it is fixed to the outer box 11, only the upper part 12b deforms, and therefore the inner bag 12 bulges stably as the ink is filled, and the upper part 12b of the inner bag 12 deforms as shown in FIGS. 1 and 2.
The inner bag is deformed to the position shown by the solid line, and the inner volume of the inner bag can be fully used.

Next, the ink container 10 filled with ink is transported to a desired location with the spout 13 covered with a cap 14. Ink 24 inside from this ink container 10
To take out the ink, connect a connector (not shown) connected to the pump to the spout 13, and place the ink container 10 so that the spout 13 faces down, as shown in FIGS. 1 and 2. , the ink 24 is sucked and taken out from the spout 13. At this time, the ink 24 in the inner bag 12 passes through the main through hole 21 of the passage plate 17 above the spout 13 and is sucked into the spout 13.
8 and the auxiliary through hole 22 of the passage plate 17, the ink is sucked into the lower part of the passage plate 17, passes through the ink passage 20, and is sucked into the spout 13. Therefore, ink is sucked from a wide area of the inner bag 12, and as the ink is sucked, the upper portion 12b of the inner bag 12 is displaced downward as a whole, as shown by a two-dot chain line 12b', while maintaining a substantially horizontal position. In this way, ink can be sucked out well. Also, for example, the upper part 12 of the inner bag 12
b is distorted and displaced, and even if the upper part of the spout 13 quickly descends and closes the main through hole 21 of the passage plate 17 as shown by the two-dot chain line 12c, the passage plate 17 is Since the ink flows into the ink passage 20 on the lower side of the ink, ink can be suctioned without any trouble. Therefore, ink suction is performed until the upper part 12b of the inner bag 12 comes into close contact with the entire upper surface of the passage plate 17. Furthermore, since the passage plate 17 has an area that extends over the entire bottom surface of the container, the inner bag 12 Most of the ink stored inside can be sucked out. Further, the ink is sucked from a wide part inside the inner bag, and the inner bag 12 has a lower part 12a fixed and an upper part 12.
Since only the upper portion 12b moves, the displacement of the upper portion 12b during ink suction is stable, so there is little variation between products and the reproducibility is extremely high. Therefore, ink can be discharged well and the amount of residual ink can be reduced for any product.

FIG. 5 is a schematic cross-sectional view showing a liquid container 10A according to another embodiment of the present invention, and FIG. 6 is a schematic cross-sectional view of the liquid container 10A viewed from a different direction. are shown with the same reference numerals. The liquid container 10A of this embodiment also includes an outer case 11, an inner bag 12 housed therein, and is attached to the inner bag 12, and is configured to protrude outward from one flat surface 11a of the outer case 11. It is provided with a spout 30 and a passage plate 17A arranged in the inner bag 12 so as to cover the spout 30. Here, the spout 30 is arranged at the center of the flat surface 11a of the outer box 11. Its structure will be described later. The passage plate 17A has the shape shown in FIGS. 7 and 8, and has a flat base portion 17.
Convex portions 19A are formed at a substantially uniform pitch throughout one side of Aa, and a main through hole 21A is formed in the center thereof (a position facing the spout 30 when the passage plate 17A is attached to the inner bag). Further, in other regions other than the central portion, a large number of auxiliary through holes 22A are formed in the portion surrounded by the convex portion 19A and in the peripheral flange portion. Note that the convex portion 19Aa located adjacent to the main through hole 21A has a partially arcuate shape in order to improve ink flow into the spout. By providing the convex portion 19Aa near the main through hole 21A in this manner, the base portion 17Aa is prevented from being deformed in the direction of the spout 30 by the suction force when sucking ink from the main through hole 21A. ,preferable. Also, passage board 1
If the auxiliary through hole 22A is provided in almost the entire area of the inner bag 7A, the ink inside the inner bag can be very uniformly sucked from the entire surface of the passage plate 17A, which is particularly effective for liquids with high viscosity. Note that although the passage plate 17A shown in FIG. 7 has a flat flange portion formed on the periphery, this flange portion may be eliminated and the convex portion 19A may be located at the outermost periphery of the passage plate 17A. .

As shown in FIGS. 9 and 10, the spout 30 includes a spout body 31 bonded to the inner bag 12, a ring 32 screwed into the base of the spout body 31, and a spout body 31 bonded to the inner bag 12. It consists of three parts: a cap 33 that is threadedly engaged with the tip of the outlet body 31; The spout main body 31 has a flange portion 31a for adhering to the inner bag 12, a large diameter portion 31b having a male screw for screwing the ring 32 on the outer peripheral surface, and a cap 33 for screwing on the outer peripheral surface. It has a small diameter part 31c having a male thread for this purpose, and a large number of tongue pieces 31d formed to protrude into the liquid passage formed by the inner surface of the small diameter part 31c. The tongue pieces 31d are made thin, for example, about 0.4 mm so as to be easily elastically deformed, and are made large enough to form a small pore 34 between these tongue pieces 31d. . Here, the size of the pores 34 is determined so that the highly viscous ink 24 contained in the inner bag 12 does not suddenly flow out when the spout 30 is directed downward. That is, as shown in FIG. 11, when the spout 30 is turned downward, the liquid inside slowly flows down from the pores 34 while forming droplets 24a, and the spout 30
However, it is determined that it takes about 2 to 3 seconds for the droplets 24a to flow out to the outside of the spout 30. For example, as a liquid, the viscosity is 50 to 40
When handling ink of about 0 poise, the size of the pores formed by the plurality of tongues 31d is such that the diameter of the center part is 1 to 4 mm, and the width of the groove part extending radially from the center part is 1 to 4 mm. It is preferable to set it as about 0.1-2 mm. The spout main body 31 having the above structure is integrally made by injection molding of a resin such as polyethylene.

9 and 10, the inner bag 12 is bonded to the upper surface of the flange portion 31a of the spout body 31 by heat sealing or the like. Note that the inner bag 12 is attached to the flange part 3.
It may be adhered to the lower surface of 1a. The ring 32 is attached to the outer box 11
The ring 32 has a flange portion 32a for pressing against the outer surface of the outer case, a knob portion 32b formed at an appropriate distance from the flange portion 32a, and reinforcing ribs 32c. By screwing the spout body 31 protruding outward from the inside of the spout body 11, the outer box 11 is sandwiched between the flange portion 31a of the spout body 31 and the flange portion 32a of the ring 32. It can be firmly fixed to the outer box 11. This ring 32 is also made by injection molding of resin. Further, the cap 33 is also made by injection molding of resin.

Next, a method of using the ink container 10A having the above structure will be explained. The spout 30 fixed to the inner bag 12 is
By projecting the spout body 31 outward from the inside of the outer box 11 and screwing the ring 32 onto it, it is firmly fixed to the outer box 11 as shown in FIG. To fill the ink container 10A with ink, a filling nozzle is connected to the spout body 31, and ink is injected through the spout body 31. At this time, the ink flows inside through the pores 34 between the tongues 31d of the spout main body 31, and the tongues 31d are further deformed by the liquid pressure at that time, increasing the area of the pores 34. This allows quick ink filling. In addition, if a filling nozzle with a shape that allows the tip to be inserted deeply into the spout body 31 and as far as the tongue piece 31d is used, when the filling nozzle is connected to the spout body 31, the nozzle tip will be inserted into the tongue piece 31d. 31d can be pushed open, thereby expanding the area of the pores 34 and allowing rapid filling. After filling with ink, the cap 33 is attached to seal the spout main body 31, and transportation, storage, etc. are carried out in this state.

Next, to take out ink from the ink container 10A, remove the cap 33 of the spout 30, connect the connector connected to the pump to the spout main body 31, and connect the ink container 10A with the spout 30. Place it on the bottom side and use the pump to suck out the liquid inside. At this time, depending on the device for taking out ink from the ink container 10A, the connector may be provided in a fixed position and facing upward. In that case, as shown in FIG. 11, after removing the cap 33, the ink container 10A and spout 30 are turned downward, and the connector 36 facing upward is
from above. Here, when the spout 30 is turned downward with the cap removed, the liquid inside tries to flow out through the pores 34 of the spout, but since the passage area of the pores 34 is small, the ink The liquid slowly flows down while forming a droplet 24a, and hardly flows out of the spout in the short time until the spout 30 is connected to the connector 36. In this way, spout 30 can be connected to connector 36 without contaminating the surrounding area with liquid. After connecting to the connector 36, the ink 24 in the inner bag 12 is sucked and taken out by the pump connected to the connector 36. At this time, the tongue piece 31d forming the pore 34 is bent downward by the suction force of the pump, the area of the pore 34 is expanded, and the ink 24 inside is suctioned and discharged well. Note that if the connector 36 is long enough to allow the tip to be inserted deep into the spout and reach the tongue, the connector tip will not fit inside the spout when the spout is connected to the connector. This is preferable because it penetrates deeply and pushes the tongue piece 31d inward, increasing the opening area of the pore 34.

In FIG. 12, when sucking the ink 24 inside the ink container 10A through the spout 30,
The ink 24 inside flows from the main through hole 21A of the passage plate 17A to the spout 30, and at the same time flows from the auxiliary through hole 22A provided on the entire surface of the passage plate 17A through the ink passage 20 on the lower surface to the spout 30. taken outside. Therefore, almost uniform ink suction is performed from the entire surface of the passage plate 17A, and as the ink is suctioned, the upper part 12b of the inner bag 12 is displaced downward while maintaining the entire horizontal position as shown by the two-dot chain line 12b'. Furthermore, even if the upper part 12b of the inner bag 12 is distorted and displaced, and a part of it quickly descends and reaches the top of the passage plate 17A as shown by the two-dot chain line 12c, that part will still remain on the passage plate 17A. Since the ink passage 20 is secured under the passage plate 17A, ink suction continues without any trouble. Therefore, the upper portion 12b of the inner bag 12 is connected to the passage plate 17.
Ink suction is performed until the entire upper surface of A is in close contact with the inner bag 12, and most of the ink contained in the inner bag 12 can be suctioned and taken out.

In the above embodiment, the pore provided in the spout body 31 of the spout 30 was formed by a plurality of elastically deformable tongue pieces, but instead of this, the spout body was simply formed with circular, elliptical, It is also possible to form pores such as grooves to form pores. However, when tongues are used as in the illustrated embodiment, the tongues can be curved by the flow of ink and the pore area can be increased, which provides the advantage of reducing the resistance to ink passage. Further, in the above embodiment, the spout main body 31 is fixed to the outer box 11 by the ring 32, but the ring may be omitted and the spout main body may simply be made to protrude outside the outer box. .

In each of the embodiments described above, the ink container is arranged so that the spouts 13 and 30 face downward, and ink suction is performed. However, the ink container is not necessarily arranged in this position. No need, spout 1
3 and 30 may be oriented sideways or upward. Further, in the above embodiment, the passage plates 17, 17A
Although a large number of auxiliary through holes 22, 22A are formed in the ink passage 20, the auxiliary through holes may be omitted and the ink may flow into the ink passage 20 only from the periphery of the passage plates 17, 17A. Furthermore, the passage plates 17 and 17A may be enlarged so that their peripheral edges contact the bag 12, and the ink may flow into the ink passage 20 only from the through holes 21 and 22 or only the through holes 21A and 22A. . Auxiliary through holes 22, 2
The shape (size), formation position, number, etc. of 2A are not limited to the illustrated embodiment, and can be changed as appropriate. Since the shape, formation position, number, etc. of these auxiliary through holes determine the ink flow within the inner bag, the shape, formation position, number, etc. of the through holes may be determined so as to produce a desired ink flow pattern. Furthermore, in all of the above embodiments, the lower part of the inner bag 12 is fixed to the outer box 11, but this is not essential.
The inner bag 12 may be simply housed within the outer box 11 without being fixed to the outer box 11. Further, the shape of the outer box is not necessarily limited to a rectangular shape, but may be cylindrical or the like. Further, the form of the inner bag is not limited to the four-sided sealed pouch as in this embodiment, but may be in the form of a bag such as a stand pack or a gusset bag.

Although an embodiment in which the present invention is applied to an ink container has been described above, the present invention is not limited to an ink container, but can be applied to any other liquid container containing any liquid.

[0029]

As described above, according to the liquid container of the present invention, by arranging the passage plate to cover the spout for discharging liquid, the liquid in the inner bag can be sucked from a wide area. In addition, the inner bag, which deforms as the liquid is drained, can be supported by its passage plate to ensure a liquid drain path, thereby reducing the amount of remaining liquid. It has the effect of being possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view of an ink container according to an embodiment of the present invention.

[Fig. 2] A schematic cross-sectional view of the ink container shown in Fig. 1 taken in a direction different from Fig. 1.

[Fig. 3] A perspective view schematically showing the entire ink container shown in Fig. 1.

FIG. 4 is a schematic perspective view of a part of the passage plate provided in the ink container shown in FIG. 1;

FIG. 5 is a schematic cross-sectional view of an ink container according to another embodiment of the present invention.

[Fig. 6] A schematic cross-sectional view of the ink container shown in Fig. 5 taken in a direction different from that shown in Fig. 5.

[Fig. 7] The passage plate provided in the ink container shown in Fig. 5,
Plan view from the spout side

FIG. 8 is a schematic perspective view of a part of the passage board shown in FIG. 7;

[Figure 9]
Schematic sectional view of the spout provided in the ink container shown in Figure 5

[Figure 10] Schematic plan view of the spout

[Fig. 11] Schematic cross-sectional view showing the state in which the spout is facing downward and connected to the connector.

[Fig. 12] A schematic cross-sectional view showing the state when ink is taken out from the ink container shown in Fig. 5.

[Fig. 13] Schematic cross-sectional view of a conventional bag-in-box

[Explanation of symbols]

10, 10A ink container 11 Outer box 11a Flat surface 12 Inner bag 12a Lower part 12b Upper part 13 Pour spout 14 Cap 15 Double-sided tape 17, 17A Passage board 19, 19A Convex part 20 Ink passage 21, 21A Main through hole 22, 22A Auxiliary through hole 23 Recessed part 24 Ink 30 Liquid spout 31 Spout body 31a Flange part 31d Tongue piece 32 ring 33 Cap 34 Pore

Claims (7)

[Claims] 1. An outer box having at least one flat surface, a flexible inner bag housed within the outer box, and a flexible inner bag fixed to the inner bag and extending from the flat surface to the outside of the outer box. a spout attached to the spout, and a passage plate fixedly provided within the inner bag so as to cover the spout, and the passage plate has a plurality of convex portions protruding toward the spout. A liquid container characterized by: 2. The liquid container according to claim 1, wherein the spout is located approximately at the center of a flat surface of the outer box. 3. The liquid container according to claim 1, wherein the passage plate has a size slightly smaller than a flat surface of the outer box on which a spout is arranged. 4. The passage plate has a main through hole at a position facing the spout, and a large number of auxiliary through holes in almost the entire area except for the periphery of the main through hole and at positions where there are no convex parts. The liquid container according to any one of claims 1 to 3, characterized in that it has: 5. Approximately half of the inner bag on the side where the spout is attached is fixed to the inner surface of the outer box. Liquid container as described. 6. The spout has a spout main body attached to a flexible inner bag, and a cap that is detachable from the spout main body, and the spout main body has a spout main body attached to a flexible inner bag, and a cap that is detachable from the spout body, and the spout main body A liquid container according to any one of claims 1 to 5, characterized in that it has pores that allow slow outflow. 7. The liquid container according to claim 6, wherein the pore is formed between a plurality of elastically deformable tongue pieces.