JP2970953B2 - Liquid container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 13, a flexible inner bag 2 made of a plastic film or the like is accommodated in an outer box 1 made of paper, cardboard, plastic or the like. A bag-in-box in which a liquid content 4 such as juice is contained in the inner bag 2 is used. In this bag-in-box, the spout 3 is usually connected to a connector connected to the pump, and the contents are sucked and taken out from the spout 3. At that time, the inner bag is deformed and the contents are taken out. The inner bag capacity is reduced.

[0003]

However, if the contents are simply sucked out of the spout 3 and taken out, the contents in the inner bag are locally sucked, and the inner bag is more easily wrinkled. Before taking out the contents, a part of the inner bag comes into close contact with the spout to confine the contents, and there is a problem that the contents cannot be taken out. In particular, when a high-viscosity material such as ink is contained as the content, this problem becomes prominent. That is, when the high-viscosity ink is stored as the contents 4, the ink hardly flows in the inner bag 2 when the contents 4 are sucked out from the spout 3 and taken out.
The ink near the spout is mainly sucked, and the upper portion of the flexible inner bag 2 is deformed as shown by a 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 in the inner bag adhere to each other in the vicinity of the spout to prevent the flow of the contents to the spout, and thereafter the contents cannot be sucked.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a bag-in-box type liquid container which can be taken out well even with high-viscosity ink and can reduce the residual amount. Aim.

[0005]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides an outer box having at least one flat surface, a flexible inner bag housed in the outer box, A spout fixed to the inner bag and attached so as to extend from the flat surface to the outside of the outer box, and a passage plate fixedly provided in the inner bag so as to cover the spout, The liquid container is characterized in that the passage plate has a plurality of protrusions protruding toward the spout side.

Here, it is preferable that the spout is disposed substantially at the center of the flat surface of the outer box. Preferably, the passage plate has a size slightly smaller than a flat surface on which the spout of the outer box is arranged. Further, a main through hole is formed in the passage plate at a position facing the spout,
In addition, it is preferable to form a large number of auxiliary through-holes in almost the entire area excluding the periphery of the main through-hole and without any protruding portions.

Further, it is preferable that about a half of the inner bag on the side where the spout is mounted is fixed to the inner surface of the outer box.

The spout used in the present invention has a spout main body attached to a flexible inner bag, and a cap detachable from the spout main body. It is preferable to form pores that allow the high liquid to flow out slowly, and it is preferable that the pores be formed between a plurality of elastically deformable tongue pieces.

[0009]

In the liquid container of the present invention, the passage plate having a large number of projections is disposed on the spout side so as to cover the spout in the inner bag. A liquid passage is formed between the portion and the convex portion, and a liquid passage extending from a through hole formed in the passage plate or a peripheral edge of the passage plate to the spout is formed, and the liquid is suctioned relatively uniformly from the entire inner bag. Moreover, even if a part of the inner bag is quickly deformed and approaches the wall surface on the spout side, the passage plate supports the inner bag, so that the liquid passage reaching the spout is not blocked, and It is possible to remove most of the liquid at a constant speed.

[0010] Here, as described above, if the spout is disposed substantially at the center of the flat surface of the outer box, the deformation (shrinkage) of the inner bag caused by taking out the liquid can be made substantially equal on the left and right sides. It will be easier. When the passage plate is slightly smaller than the flat surface on which the spout of the outer box is arranged, almost the entire flat surface on which the spout is arranged is covered with the passage plate, and the lower surface of the passage plate is provided on the lower surface of the passage plate. Since 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 in the inner bag is more reliably taken out. Further, if a main through hole is provided at a position facing the spout of the passage plate and an auxiliary through hole is provided in almost all other areas, the liquid in the inner bag can be extremely uniformly dispersed from almost the entire surface of the passage plate. The liquid is sucked into the passage and the liquid is sucked relatively uniformly from the entire inner bag. For this reason, the inner bag is deformed as a whole, and the liquid removal is more stable, which is preferable.

Also, if about half of the side of the inner bag to which the spout is attached is fixed to the inner surface of the outer case, the inner bag can be filled with liquid and taken out of the inner bag when liquid is taken out. Since only the part on the side not fixed is deformed, the deformation occurs stably, the internal volume can be sufficiently used when filling the liquid, the remaining amount can be reduced when the liquid is taken out, and the variation between products can be reduced.

Further, if a small-area pore is formed in the spout, the cap of the spout is removed, and the spout is turned downward or sideways in that state, and the spout is connected to the connector which is standing upward or sideways. When the liquid has a high viscosity, the liquid only flows out slowly from the pores of the spout, and does not flow out of the spout in a short time until the connection to the connector is completed. The spout can be connected to the connector without becoming dirty. Then, after connection to the connector, the liquid inside the inner bag can be sucked and discharged through the small holes. Here, if these pores are formed between a large number of elastically deformable tongue pieces, the plurality of tongue pieces are deformed by the suction force when suctioning and removing the liquid inside the inner bag, and the pores are formed. The opening area is enlarged, and the suction and removal of the liquid are facilitated. If the tip of the connector is extended so that it can be inserted to the position of the tongue in the spout, when the spout is connected to the connector, the tip of the connector penetrates deeply into the spout and the tongue can be inserted. Since it is pushed inward to increase the opening area of the pores, the liquid can be easily sucked and taken out.

[0013]

Embodiments 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 a container for containing ink, FIG. 2 is a schematic sectional view of the ink container cut in a direction different from FIG. FIG. 3 is a perspective view schematically showing the entire ink container. An ink container, generally designated by the reference numeral 10, includes a rectangular outer box 11 and a flexible inner bag 12 housed therein, and the inner bag 12 has a cap 14 attached thereto.
Is attached. This spout 1
3 is arranged so as to extend from one flat surface 11a of the outer box 11 to the outside, and is fixed to the outer box 11. The mounting position of the spout 13 with respect to the flat surface 11a is not particularly limited.
It is preferably on the center line of 1a, and more preferably on the center of the center line. With this configuration, when taking out the liquid from the inner bag 12 as described later,
It is easy to take out the liquid from the front, rear, left and right in a well-balanced manner, so that the inner bag 12 can be contracted in a well-balanced manner in the front, rear, left and right. Inner bag 12 has upper and lower two portions 12
1 and 12b. For convenience, the lower portion 12a is referred to as a lower portion and the upper portion 12b is referred to as an upper portion in FIG. The lower portion 12a of the inner bag 12 to which the spout 13 is attached is fixed to the flat surface 11a of the outer case 11 and the flat surface 11b around the lower surface by a suitable bonding means, for example, a double-sided tape 15. ing. In addition, it may be fixed with an adhesive such as hot melt. On the other hand, the upper part 12b
Is free. Thus, the lower part 1 of the inner bag 12
When the inner bag 2a is fixed to the outer box 11, only the upper portion 12b of the inner bag is deformed when the inner bag is filled with ink or the ink is removed from the inner bag, and the periphery of the upper portion 12b (the lower portion 12a). Because the position of the inner bag is constrained, the deformation of the inner bag occurs stably, and the advantage that the remaining amount of the contents becomes uniform (the variation between products is reduced) is obtained.

Here, the outer box 11 and the inner bag 12 to be used are not particularly limited, and conventionally known ones can be appropriately used. For example, the outer box 11 is made of paper,
Can be made of cardboard, plastic, metal, etc.
Further, as the inner bag 12, a single-layer film or a laminated film of plastic, a laminated film of plastic and paper, metal foil, or the like can be used. Also, as the outlet 13,
Plastic molded products can be used.

A passage plate 17 is arranged inside the inner bag 12 so as to cover the spout 13 and is fixed to the inner bag 12. The passage plate 17 has an area slightly smaller than the flat surface 11a on which the spout 13 is attached (for example, an area smaller by several mm at each of the vertical and horizontal ends of the passage plate 17).
The edge of the entire circumference and the side 1 of the outer box 11
1b between the inner bag 12 and the inner bag 12
8 are formed. The passage plate 17
The size of the inner bag is not limited to this size. However, when the size is set as described below, when suction of the ink inside is completed, almost the entire area of the upper portion 12b of the inner bag is supported, and When the passage plate 17 is fixed to the inner bag 12 and set in the outer case 11, the passage plate 17 can be prevented from sticking to the lower portion 12a located on the upper portion 11a. Is preferable because it does not bump into the side surface 11b of the outer box 11 and does not enter well, and provides advantages such as simplification of the manufacturing process.

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 squares provided substantially uniformly over the entire area of the base portion 17a so as to protrude from one surface thereof. 1 and 2, the projection 19 is mounted on the lower portion 12a of the inner bag 12 and on the flange 13a of the spout 13, and is attached.
And it is fixed to the inner bag 12 at an appropriate position. In the case of the present embodiment, a total of six corner portions of the passage plate 17 and two central side portions are heat-sealed and fixed to the lower portion 12a of the inner bag 12 in a spot shape. The passage plate 17 has a flat shape without the convex portion 19 at a position facing the spout, so that the ink can be more easily absorbed from the spout 13.
Thus, an ink passage 20 is formed between the base portion 17a of the passage plate 17 and the lower portion 12a of the inner bag 12, and the ink passage 20 extends vertically and horizontally by the convex portion 19. The ink passage 20 is for flowing the ink when the ink is sucked and taken out from the inner bag 12, and it is preferable that the ink is taken out. From this point, the smaller the better, since it will be the residual ink. The dimensions of the ink passage 20 are determined in consideration of these. The size of the ink passage 20 varies depending on physical properties such as ink viscosity, but generally, the height is 1 to 5 mm and the width is 3
５5 mm is selected. However, it is not a limited value. In addition, the shape of the convex portion 19 is not limited to the illustrated rectangular shape, and can be variously changed, such as a circular shape.

As shown in FIG. 4, a large main through hole 21 is formed in the passage plate 17 at a position facing the spout 13.
A small auxiliary through hole 22 at a position facing the ink passage 20;
Are formed. The material and manufacturing method of the passage plate 17 are not particularly limited, but are preferably formed by molding plastic. Note that FIG. 4 illustrates the passage plate 17 formed by molding from a plastic sheet, and therefore, a concave portion 23 is formed on the upper surface side of the base portion 17a corresponding to the convex portion. The concave portion 23 may be left as it is, but since it becomes a reservoir for ink, it is preferable that the concave portion 23 be closed by an appropriate means, for example, by sticking a film, a sheet, or the like. Alternatively, a hole may be formed in the side surface of the concave portion 23 to communicate with the ink passage 20. When the passage plate is manufactured by injection molding, it is naturally preferable that the upper surface of the base portion 17a be flat without a concave portion.

Next, a method of using the ink container 10 having the above configuration will be described. When the inner bag 12 is not filled with ink, the upper portion 12b of the inner bag 12 is in a state of being attached to the lower portion 12a. Insert the ink container 10 into the spout 1
3 from the spout 13 with the ink 2
Fill 4 As the inner bag 12 is filled with the ink 24, the inner bag 12 expands. At this time, the lower portion 12 of the inner bag 12
Since a is fixed to the outer box 11, only the upper portion 12b is deformed, and therefore, the swelling of the inner bag 12 due to ink filling occurs stably, and the upper portion 12b of the inner bag 12 is shown in FIGS. 2, it can be deformed to the position indicated by the solid line, and the inner volume of the inner bag can be sufficiently used.

Next, an ink container 10 filled with ink is provided.
Is transported to a desired place with the cap 14 attached to the spout 13. From the ink container 10 to the internal ink 2
In order to take out 4, a connector (not shown) connected to a pump is connected to the spout 13, and the ink container 10 is arranged so that the spout 13 is downward as shown in FIGS. 1 and 2. Then, the ink 24 is sucked out of the outlet 13 and taken out. At this time, the ink 24 in the inner bag 12 is sucked into the spout 13 through the main through hole 21 of the passage plate 17 above the spout 13, but the ink passage 18 around the passage plate 17 may also be drawn. And the passage plate 1 through the auxiliary through hole 22 of the passage plate 17.
7 and is drawn through the ink passage 20 and the spout 1
It is sucked into 3. For this reason, ink suction is performed from a large area of the inner bag 12, and the upper portion 12b of the inner bag 12 is displaced downward while being substantially horizontal as shown by a two-dot chain line 12b 'with the ink suction. Thus, the ink can be sucked out well. Further, even if the upper portion 12b of the inner bag 12 is distorted and displaced, as shown by a two-dot chain line 12c, the upper portion of the spout 13 descends quickly and closes the main through hole 21 of the passage plate 17, Since the ink flows from the other auxiliary through hole 22 to the ink passage 20 below the passage plate 17, the ink can be sucked without any trouble. Therefore, ink is sucked until the upper portion 12b of the inner bag 12 is in close contact with the entire upper surface of the passage plate 17, and the passage plate 17 has an area which spreads over the entire bottom surface of the container.
Most of the ink stored inside can be removed by suction. Further, since the ink is sucked from a wide portion in the inner bag and the inner bag 12 moves only the upper portion 12b while the lower portion 12a is fixed, the upper portion 12 at the time of ink suction is moved.
The displacement of b is stable, and therefore, there is little variation between products and reproducibility is extremely high. For this reason, any product can discharge ink satisfactorily and reduce the amount of residual ink.

FIG. 5 is a schematic sectional view showing a liquid container 10A according to another embodiment of the present invention, and FIG. 6 is a schematic sectional view of the liquid container 10A viewed in a different direction. Are denoted by the same reference numerals. The liquid container 10A of this embodiment also has an outer box 11, an inner bag 12 housed therein, and attached to the inner bag 12, so as to protrude from one flat surface 11a of the outer box 11 to the outside. A spout 30 is provided, and a passage plate 17 </ b> A arranged inside the inner bag 12 so as to cover the spout 30. Here, the spout 30 is arranged at the center of the flat surface 11 a of the outer box 11. The structure will be described later. The passage plate 17A has a shape shown in FIGS.
Protrusions 19A are formed at a substantially uniform pitch over one surface of Aa, and a main through-hole 21A is formed at the center (a position facing the spout 30 when the passage plate 17A is attached to the inner bag), Further, in other regions except the central portion, a large number of auxiliary through holes 22A are formed in a portion surrounded by the convex portion 19A and in a peripheral flange portion. The projection 19Aa at a position adjacent to the main through hole 21A is partially arc-shaped in order to make the ink flow into the spout well.
By providing the projection 19Aa also in the vicinity of the main through hole 21A in this way, the base portion 17Aa is not deformed in the direction of the spout 30 by the suction force when sucking ink from the main through hole 21A. ,preferable. Passage plate 1
By providing the auxiliary through hole 22A in almost the entire area of 7A, the ink in the inner bag can be sucked very uniformly from the entire surface of the passage plate 17A, which is particularly effective for a liquid having a high viscosity. In addition, in the passage plate 17A shown in FIG. 7, a flat flange portion is formed on the peripheral edge. However, the flange portion may be eliminated, and the protrusion 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 adhered to the inner bag 12, a ring 32 screwed to a root portion of the spout body 31,
It consists of three parts, a cap 33 which is screwed to the tip of the spout body 31. The spout body 31 has a flange portion 31a for bonding 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 screwing on the outer peripheral surface. And a plurality of tongue pieces 31d formed so as to protrude into a liquid passage formed on the inner surface of the small diameter portion 31c. The tongue piece 31d is thin so as to be easily elastically deformed, for example, is formed to have a thickness of about 0.4 mm, and has a size capable of forming 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 when the spout 30 is directed downward. That is, as shown in FIG.
When the spout 30 is turned downward, the liquid inside flows down from the fine holes 34 while slowly forming the droplets 24 a, and the spout 3
However, it is determined that it takes about 2 to 3 seconds for the droplet 24a to flow to the outside of the spout 30 at that time. For example, a liquid having a viscosity of 50 to 4
When handling ink of about 00 poise, the size of the pores formed by the plurality of tongue pieces 31d is such that the diameter of the central portion is 1 to 4 mm, and the width of the groove portion radially extending from the central portion is It is preferable to set it to about 0.1 to 2 mm. The spout body 31 having the above structure is integrally formed 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. The inner bag 12 is connected to the flange 3
It may be adhered to the lower surface of 1a. The ring 32 is
A flange portion 32a for pressing against the outer surface of the housing, a knob portion 32b formed at an appropriate distance from the flange portion 32a, a reinforcing rib 32c, and the like. The outer case 11 is sandwiched between the flange portion 31a of the spout body 31 and the flange portion 32a of the ring 32 by screw engagement with the spout body 31 projecting from the inside to the outside of the spout 11, and the spout body 31 is attached. It can be firmly fixed to the outer case 11. This ring 32 is also made by injection molding of resin. The cap 33 is also made by injection molding of resin.

Next, a method of using the ink container 10A having the above configuration will be described. The spout 30 fixed to the inner bag 12 is
By projecting the spout body 31 from the inside of the outer box 11 to the outside and screwing the ring 32 thereon, it is firmly fixed to the outer box 11 as shown in FIG. To fill the ink container 10A with the ink, a filling nozzle is connected to the spout body 31 and the ink is injected through the spout body 31. At this time, the ink flows into the inside through the fine holes 34 between the tongue pieces 31d of the spout body 31, and further deforms the tongue pieces 31d by the liquid pressure at that time to increase the area of the fine holes 34. This allows quick filling of the ink. When the filling nozzle is shaped so that the tip can be inserted deeply into the spout body 31 and can be inserted up to the tongue piece 31d, when the filling nozzle is connected to the spout body 31 the tongue piece is used at the nozzle tip. 31d can be pushed open, thereby increasing the area of the pores 34 and enabling quick filling. After the ink is filled, the spout body 31 is sealed by attaching the cap 33, and transportation and storage are performed in this state.

Next, when removing ink from the ink container 10A, the cap 33 of the spout 30 is removed, a connector connected to a pump is connected to the spout main body 31, and the spout 30 is connected to the ink container 10A. The liquid inside is sucked and taken out by the pump so as to be on the lower side. At this time, the connector may be provided upward at a fixed position depending on a device that takes out the ink from the ink container 10A. In this case, as shown in FIG. 11, after removing the cap 33, the ink container 10A and the spout 30 are turned downward, and the connector 3 is turned upward.
6 is engaged from above. Here, when the spout 30 is turned downward with the cap removed, the liquid inside tends to flow out through the pores 34 of the spout, but since the passage area of the pores 34 is small, the ink is The droplets 24a slowly flow down while forming the droplets 24a, and hardly flow out of the outlets in a short time until the outlet 30 is connected to the connector 36. Thus, the spout 30 can be connected to the connector 36 without polluting the surroundings with the liquid. After the connection 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 fine hole 34 is bent downward by the suction force of the pump, the area of the fine hole 34 is enlarged, and the ink 24 inside is well sucked and discharged. If the tip of the connector 36 is deepened into the spout and elongated so that it can be inserted up to the tongue piece, when the spout is connected to the connector, the connector tip is inserted into the spout. This is preferable because it penetrates deeply and pushes the tongue piece 31 d inward to increase the opening area of the pore 34.

In FIG. 12, when the internal ink 24 is sucked from 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 simultaneously flows from the auxiliary through hole 22A provided on the entire surface of the passage plate 17A to the spout 30 through the ink passage 20 on the lower surface. It is taken out. Therefore, substantially uniform ink suction is performed from the entire surface of the passage plate 17A, and the upper portion 12b of the inner bag 12 is displaced downward while being substantially horizontal as shown by a two-dot chain line 12b 'with the ink suction. Also, even if the upper portion 12b of the inner bag 12 is distorted and displaced, and a portion of the inner bag 12 descends quickly and reaches the passage plate 17A as shown by a two-dot chain line 12c, the portion is not moved by the passage plate 17A. The ink passage 20 is secured below the passage plate 17A so as to be supported, so that the ink suction is continuously performed without any trouble. For this reason, the upper portion 12b of the inner bag 12 is
Ink suction is performed until the ink is adhered to the entire upper surface of A, and most of the ink contained in the inner bag 12 can be sucked and taken out.

In the above embodiment, the pores provided in the spout body 31 of the spout 30 are formed by a plurality of elastically deformable tongue pieces. Groove-shaped holes or the like may be formed to form pores. However, when the tongue piece is used as in the illustrated embodiment, the tongue piece can be curved by the flow of the ink and the pore area can be increased, so that the advantage that the ink passage resistance decreases can be obtained.
In the above embodiment, the spout main body 31 is fixed to the outer box 11 by the ring 32. However, the ring may be omitted, and the spout main body may simply be projected outside the outer box. .

In each of the embodiments described above, the ink containers are arranged such that the spouts 13 and 30 face downward, and ink suction is performed. However, the ink containers are always arranged in this position. No need, outlet 1
There is no problem if the third and the third are directed sideways or upward. In the above embodiment, the passage plates 17 and 17A
Although a large number of auxiliary through holes 22 and 22A are formed in this embodiment, the auxiliary through holes may be omitted, and ink may flow into the ink passage 20 only from the periphery of the passage plates 17 and 17A. Further, the passage plates 17 and 17A may be enlarged so that the periphery thereof contacts 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 hole 22, 2
The shape (size), formation position, number, and the like of 2A are not limited to the illustrated embodiment, but can be changed as appropriate. Since the shape, formation position, number, and the like of these auxiliary through holes determine the ink flow in the inner bag, the shape, formation position, number, and the like of the through holes may be determined so as to generate a desired ink flow pattern. Further, in each of the above embodiments, the lower portion of the inner bag 12 is fixed to the outer box 11, but this is not essential.
The inner bag 12 may be simply accommodated in 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 a cylindrical shape or the like. The form of the inner bag is not limited to the four-sided seal pouch as in the present embodiment, but may be a bag shape such as a stand pack or a gusset bag.

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

[0029]

As described above, according to the liquid container of the present invention, the passage plate is disposed so as to cover the spout for discharging the liquid, so that the liquid in the inner bag is sucked from a wide portion. The liquid can be stably taken out at all times, and the inner bag, which deforms as the liquid is discharged, is supported by the passage plate to secure the liquid discharge passage, and the remaining amount of liquid can be reduced. It has the effect of being able to do it.

[Brief description of the drawings]

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

FIG. 2 is a schematic sectional view of the ink container shown in FIG. 1 cut in a direction different from that of FIG. 1;

FIG. 3 is a perspective view schematically showing the entire ink container shown in FIG. 1;

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

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

FIG. 6 is a schematic sectional view of the ink container shown in FIG. 5 cut in a direction different from that of FIG. 5;

FIG. 7 shows a passage plate provided in the ink container shown in FIG.
Plan view from the spout side

8 is a schematic perspective view of a part of the passage plate shown in FIG.

9 is a schematic sectional view of a spout provided in the ink container shown in FIG.

FIG. 10 is a schematic plan view of the spout.

FIG. 11 is a schematic cross-sectional view showing a state where the spout is connected to the connector with the outlet facing downward.

FIG. 12 is a schematic sectional view showing a state when ink is taken out from the ink container shown in FIG. 5;

FIG. 13 is a schematic sectional view of a conventional bag-in-box.

[Explanation of symbols]

 10, 10A ink container 11 outer case 11a flat surface 12 inner bag 12a lower part 12b upper part 13 spout 14 cap 15 double-sided tape 17, 17A passage plate 19, 19A convex part 20 ink passage 21, 21A main through hole 22, 22A auxiliary through hole 23 concave portion 24 ink 30 liquid spout 31 spout body 31a flange 31d tongue piece 32 ring 33 cap 34 pore

Claims (7)

(57) [Claims] 1. An outer case having at least one flat surface, a flexible inner bag housed in the outer case, and fixed to the inner bag so as to extend from the flat surface to outside the outer case. And a passage plate fixedly provided in the inner bag so as to cover the spout, and the passage plate has a plurality of convex portions protruding toward the spout side. A liquid container characterized by the above-mentioned. 2. The liquid container according to claim 1, wherein the spout is disposed substantially 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 on which the spout of the outer box is arranged. 4. The passage plate has a main through-hole at a position facing the spout, and a number of auxiliary through-holes at almost the entire area excluding the periphery of the main through-hole and without any protrusions. The liquid container according to any one of claims 1 to 3, further comprising: 5. The inner bag according to claim 1, wherein about half of the side of the inner bag to which the spout is attached is fixed to the inner surface of the outer box. A liquid container as described. 6. The spout has a spout main body attached to a flexible inner bag, and a cap detachable from the spout main body, wherein the spout main body has a high viscosity liquid. The liquid container according to any one of claims 1 to 5, wherein the liquid container has pores that allow the liquid to flow out slowly. 7. The liquid container according to claim 6, wherein the pore is formed between a plurality of elastically deformable tongue pieces.