JP3177055B2 - Spout with passage member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spout for attaching a flexible bag to take out liquid from the bag, and more particularly to a bag accommodated in an outer box such as a cardboard box or a carton. (Referred to as a bag).

[0002]

2. Description of the Related Art Conventionally, as a liquid packaging container, a bag-in-box (hereinafter referred to as B) in which a flexible inner bag is accommodated in an outer box.
IB). Usually this type of BIB
In order to facilitate the removal of the contents, a spout is attached to the inner bag, and the spout is projected from the vicinity of the lower end of the side surface of the outer box to the outside of the outer box. When taking out the contents, a connector of the liquid take-out device is connected to the spout, and the liquid is taken out by its own weight or by suction from the liquid take-out device. At this time, the inner bag was deformed so that the inner volume was reduced as the contents were discharged.

[0003]

However, this BIB
In, when the contents were taken out while deforming the inner bag, before the deformed portion of the inner bag took out all the contents, it stuck to the bottom part of the inner bag near the spout or the side part However, there is a problem in that the contents are trapped in the back of the container, the contents cannot be taken out sufficiently, and the remaining amount increases. This problem was particularly remarkable when a high-viscosity liquid such as ink was used as the content.

[0004] In order to solve this problem, it is known that an elongated passage member having a substantially H-shaped cross section is inserted into an inner bag from a spout. However, simply inserting the passage member into the inner bag may change the position of the passage member and may not be useful. To prevent this, the passage member may be bonded to a predetermined position with respect to the inner bag, but this requires a bonding step and increases the cost.

[0005] Recently, a bag-in-carton (hereinafter referred to as BIC) having an inner bag fixed in a carton is also known. The present inventors have developed a BIC in which at least a part of the inner bag of the BIC is deformed without adhering to the inner surface of the carton, and the contents are sucked out while deforming the inner bag. In this case as well, there is a problem that the remaining amount of the contents is increased as in the conventional BIB.

The present invention has been made in view of such conventional problems, and is used by being attached to a BIB or BIC bag (inner bag) used for packaging a high-viscosity liquid such as ink or a liquid that does not want to come into contact with air. It is an object of the present invention to provide a spout capable of taking out the contents in such a manner that the remaining amount in the bag becomes small when doing so.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is directed to a spout used by being attached to a flexible bag, and having a through hole penetrating into and out of the bag. Part, a flange provided on the outer periphery of the cylindrical part and joined to the inner surface of the bag, and the flange integrally and integrally with the flange.
An elongate passage member connected to be located on the extension surface , the passage member including a passage for guiding the liquid in the bag to the hole of the tubular portion, the tubular portion, the flange, and the passage.
A spout provided with a passage member is characterized in that the passage member is integrally formed of resin .

[0008]

Since the spout of the above construction is integrally provided with a passage member, it is only necessary to attach the spout to a predetermined position of the bag and the passage member is formed in the cylindrical portion of the spout. Can be placed in place for the hole for
The mounting work of the passage member is easy. In use, the contents in the bag are sucked from the spout, and when a part of the bag moves to the passage member with the suction, the passage member supports the bag, and the inside of the bag is supported. A passage that guides the liquid to the hole in the cylindrical part can be secured, and the contents in the bag can be taken out well,
Remaining amount can be reduced. Furthermore, a bag to which this spout is attached
If used as inner bag in carton,
Project from the hole formed on the side of the carton,
Press the flange against the inside of the carton through the bag and attach
Only by moving the passage member along the side of the carton.
The contents can be taken out well through the passage member.
Can be put out.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention shown in the drawings will be described below. FIG. 1 is a schematic cross-sectional view of a BIC having a spout according to an embodiment of the present invention, where (a) shows a state where the contents are filled, and (b) shows a state where the contents are sucked out. I have. FIG. 2 is a schematic perspective view of the BIC. 1 and 2, a BIC indicated by reference numeral 1 as a whole is
It has a carton 2 constituting an outer container and a flexible inner bag 3 accommodated therein, and a content 4 which is a liquid such as ink is accommodated in the inner bag 3. Carton 2
Has six flat rectangular surfaces, namely four side surfaces 2a, 2b,
It has a rectangular parallelepiped shape having 2c, 2d and two end faces 2e, 2f.

The inner bag 3 is partially adhered to the inner surface of the carton 2 and is restrained so as not to move. Inner bag 3
The part that is stuck and restrained to the carton 2 of
This is an area facing two adjacent side surfaces 2b and 2c of the carton 2. However, in this case, it is not necessary to attach the inner bag 3 to the entire surface of the side surfaces 2b and 2c.
If the entire area facing the area 2c can be restrained so as not to move, the inner bag 3 may be attached to only a part of the side faces 2b and 2c. In this example, the position indicated by oblique lines 6 is the sticking position. The other side 2a, 2d, 2 of the carton 2 of the inner bag 3
The areas facing e and 2f are not attached to the inner surface of the carton 2. With this configuration, the inner bag 3 is connected to the diagonal line X-
When X is divided into the side surfaces 2b and 2c and the side surfaces 2a and 2d by X, about half of the side surfaces 2b and 2c are fixed to the inner surface of the carton 2 so as not to move. The part becomes a movable movable part. In addition,
In the region of the inner bag 3 that faces the end surfaces 2e and 2f of the carton 2, the side surfaces 2b and 2 are larger than the diagonal line XX in FIG.
The portion on the c side may be attached to the end faces 2e and 2f as needed.

A spout 8 communicating with the inner bag 3 is attached to one of the two side surfaces 2b and 2c of the carton 2 to which the inner bag 3 is attached, and is closed by a cap 9. . Although the mounting position of the spout 8 is not particularly limited, in the illustrated embodiment, the spout 8 is located near the ridge line where the two side surfaces 2b and 2c to which the inner bag 3 is attached and close to the lower end. .

As shown in FIGS. 3 and 4, the spout 8 has a cylindrical portion 11 having a thread 11a on the outer periphery and a hole 11b penetrating therethrough, and a spout 8 formed on the outer periphery of the cylindrical portion 11. And a flange 12 for mounting the inner bag. The cylindrical portion 11 is formed in a shape suitable for connecting a connector (not shown) provided on a machine to be used such as a printing machine to which the BIC 1 is attached. In addition,
Although the annular groove 11c is formed in the cylindrical portion 11 in order to reduce the thickness and facilitate molding, the groove 11c may not be formed in some cases. The spout 8 further includes a cylindrical portion 13 formed so as to surround the through hole 11 b and extend inward of the inner bag 3 beyond the flange 12.
On the side surface of the cylindrical portion 13, a plurality of groove-like passages 14 for passing a liquid are formed. By providing the cylindrical portion 13 having the passage 14, even when the movable portion of the inner bag 3 approaches the spout 8 at the time of taking out the contents, the inner bag 3 is held at the tip of the cylindrical portion 13. Can be supported, so that passages 14
The flow of the contents reaching the hole 11b can be secured.

On the flange 12 of the spout 8, an elongated passage member 15 is provided integrally and radially. The passage member 15 includes a first flat plate portion 15a provided on an extension surface of the flange 12, a rib 15b provided substantially at the center at a right angle, and a tip end provided in parallel with the first flat plate portion 15a. A substantially H-shaped section having a second flat plate portion 15c and a second flat plate portion 15c.
A passage extending from the inside of the inner bag 3 to the hole 11b of the tubular portion 11 is formed therebetween. Thus, as shown in FIGS. 1 and 2, the cylindrical portion 11 of the spout 8 protrudes from the hole formed in the side surface 2 b of the carton 2, and the flange 12 is
By adhering to the inner surface of the inner bag 3 attached to the inner surface, when the spout 8 is attached, the passage member 15 can be positioned along the side surface 2b of the carton 2 at the same time. As described above, since the passage member 15 has a substantially H-shaped cross section, when the movable portion of the inner bag 3 moves to the side surface 2b as the contents 4 in the inner bag 3 are taken out, the passage member 15 The inner bag 3 can be supported by the second flat plate portion 15c, and a passage toward the hole 11b of the spout 8 can be secured. In FIGS. 3 and 4, the spout 8 is further provided with projections 16 at intervals so as to secure a passage from the passage member 15 to the hole 11 b. In this embodiment, one passage member 15 is provided in the spout 8, but a plurality of passage members may be provided as necessary.

The cap 9 is optional as long as it closes the spout 8. In this embodiment, a simple structure shown in FIG. 5 is used.
The one provided with a plug inserted into 1b and closing the hole 11b may be used. The spout 8 and the cap 9 are usually made by molding a resin.

Next, a method of manufacturing the BIC 1 having the above configuration will be described. First, in FIG. 6, a carton blank 2 'for punching a paperboard into a predetermined shape to form a carton.
Prepare At the same time, a film is attached to the tube (sealing the back), and a cylindrical film 3 'cut to a predetermined length (the upper and lower ends are sealed in a later step to form an inner bag) is prepared. The tubular film 3 'is not limited to the back-sealed film as shown in the figure, but may be a film formed by stacking two films and sealing both sides thereof.

Next, the panel 2 of the carton blank 2 '
A paste (e.g., emulsion) 20 is applied to b 'and 2c' (the areas to be the side surfaces 2b and 2c of the carton 2). Since this glue application is carried out while transporting the carton blank 2 'in the direction of the arrow, the glue 20 is applied linearly as shown. At the same time, glue is applied to the back of the glue allowance 2g '.

Next, the glue 20 is applied to the carton blank 2 '.
The cylindrical film 3 'is stuck by using. This state is the state shown in FIG. Next, the panels 2a 'and 2d' of the carton blank 2 '(the side 2a of the carton 2;
As shown in FIG. 7B, the region 2d) is folded and attached to the body. As described above, the flat BI before assembly
C1 'is formed.

Next, the flat BIC 1 'is sent to an assembling and filling process, where it is raised into a prismatic shape as shown in FIG. 8 and a hole for attaching a spout is punched out. It is attached. Here, the spout 8 is attached by inserting the tubular portion 11 of the spout 8 from the inside of the cylindrical film 3 ′ into a hole for attaching the spout, and then attaching the flange 12 to the inner surface of the tubular film 3 ′. For example, by bonding with an ultrasonic seal. After attaching the spout 8, the lower end of the tubular film 3 'is sealed, then the bottom of the carton blank 2' is assembled, and then the upper end of the tubular film 3 'is sealed, and then the carton blank 2' is sealed. 'Are assembled. Thereby, as shown in FIG. 2, the BIC 1 containing the inner bag 3 in the carton 2
Is assembled. Note that these steps can be performed by applying a conventional BIC manufacturing technique, and a description of manufacturing equipment and the like will be omitted. Finally, after the air in the inner bag 3 is evacuated from the outlet 8, the contents 4 such as ink are filled, and the state shown in FIG.

When the BIC 1 filled with the contents 4 is used, as shown in FIG. 2, the BIC 1 is set on a machine to be used such as a printing machine in a substantially upright state, and is provided in the spout 8 on the machine side. The connector (not shown) of the suction device is connected, and the contents 4 are sucked from the spout 8. At this time, inner bag 3
Of the diagonal line XX on the opposite side to the spout side is a movable portion that is not restricted by the inner surface of the carton 2, and the movable portion is moved as shown in FIG. As shown in b), the contents are deformed as shown by the two-dot chain lines 22a, 22b, 22c, etc., and the contents are taken out without putting air into the inner bag. And finally, inner bag 3
The movable part of FIG. 3 is in a state of being fitted into about half of the fixed part attached to the inner surface of the carton, and almost all the contents are taken out.

Here, the movable portion of the inner bag 3 is about half of the movable portion of the inner bag 3, so that when the movable portion is stuck in the fixed portion restrained by the inner surface of the carton, early removal of the contents is performed. In this case, it is unlikely that a part of the movable portion is in close contact with the fixed portion in the vicinity of the spout 8 to confine the contents. In addition, since the spout 8 is disposed near the top of the fixed portion of the inner bag 3, the movable portion of the inner bag 3 moves to the spout 8 at the slowest speed.
Therefore, most of the contents can be taken out.
Furthermore, since the spout 8 of this embodiment has the cylindrical portion 13 protruding into the inner bag 3 and integrally having the passage member 15, the inner bag 3 that has moved as the contents are taken out can be removed from the inner bag 3. The liquid discharge passage can be secured by being supported by the cylindrical portion 13 and the passage member 15, and most of the contents can be taken out more favorably.

In the above description, the BIC 1 is set upright on the machine when the contents are taken out,
Although the case where the contents are sucked out from the spout 8 provided at the lower end of b has been described, the contents can be taken out from the BIC 1 not only in this state but also can be changed as appropriate according to the machine on which the BIC 1 is set. . For example, the side face 2b having the spout 8 may be set to the lower side, and the spout 8 may be set to the machine with the spout 8 facing downward to suck out the contents. In this case, the mounting position of the spout 8 need not be provided at the lower end of the side surface 2b as in the illustrated embodiment.

Further, in the above embodiment, the BI has a construction in which the spout 8 is formed by attaching the inner bag 3 to the side surfaces 2b and 2c of the carton 2.
Although the case where it is used for C1 has been described, the configuration of the BIC to which the spout of the present invention is attached is not limited to the one in the illustrated embodiment, and can be changed as appropriate. May be used.

[0023]

As described above, in the spout of the present invention , the cylindrical portion, the flange and the passage member are integrally formed of resin.
Since it is shaped, the manufacturing cost can be reduced as compared with the conventional case where the spout and the passage member are separately manufactured, and when the spout is attached to the bag, the spout is simply attached to the bag. Or in case of BIC, etc.
The passage member can be positioned at a predetermined position only by attaching the bag to the side of the carton together with the bag , and the attaching work is also facilitated. Further, in use, since the passage member is always kept at a fixed position with respect to the liquid outlet hole of the spout, the contents in the bag are sucked from the spout and the bag is removed with the suction. When the portion has moved to the passage member, the bag is supported by the passage member, and a passage for guiding the liquid in the bag to the hole of the cylindrical portion can be secured. It has the effect that the amount can be reduced.

[Brief description of the drawings]

FIG. 1 shows a B with a spout according to one embodiment of the invention.
(A) is a schematic horizontal sectional view showing a state where the contents are filled, and (b) is a schematic horizontal sectional view showing a state where the contents are sucked out.

FIG. 2 is a schematic perspective view of the BIC.

FIG. 3 is a partial cross-sectional side view showing a spout according to an embodiment of the present invention used for the BIC.

FIG. 4 is a schematic bottom view of the spout.

FIG. 5 is a schematic sectional view of a cap for closing the spout.

FIG. 6 is a schematic plan view showing a carton blank and a film attached to a cylinder for manufacturing the above-mentioned BIC.

FIGS. 7A and 7B are schematic plan views showing a carton blank and a film attached to a cylinder in the middle of a BIC manufacturing process.

FIG. 8 is a schematic perspective view of the BIC in the middle of the process of manufacturing the BIC.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 BIC 2 Carton 2a, 2b, 2c, 2d Side surface 3 Inner bag 4 Contents 6 Adhering position 8 Outlet 9 Cap 11 Cylindrical portion 11b Hole 12 Flange 13 Cylindrical portion 14 Passage 15 Passage member 15a First flat plate portion 15b Rib 15c Second flat part

Claims (1)

(57) [Claims] 1. A spout which is attached to a flexible bag and is used. The spout is provided on the outer surface of the cylindrical portion having a hole penetrating into and out of the bag. The flange to be joined and the flange
An elongated passage member connected so as to be positioned on the long surface, the passage member including a passage for guiding the liquid in the bag to the hole of the tubular portion, the tubular portion, the flange, and the passage.
A spout provided with a passage member, wherein the member is integrally formed of resin .