JPH0661761U - Bag-in-box for viscous liquids - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is used for viscous liquids such as food seasonings, adhesives, printing inks, etc., and it is easy to suck the content liquid and discharge it, and the residual liquid amount is small. , A bag-in-box for viscous liquids. [Structure] A bag made of flexible resin film,
In a bag-in-box in which a box-shaped box body such as a rigid corrugated board or a paperboard having a rectangular parallelepiped shape is inserted, and a plug body penetrating the lower end portion of the front side plate of the box body is attached to the bag body, the inner surface side of the box body Of the triangular region including at least the upper end region of the front side plate and the right end of the left side plate and the triangular region including the left end and the lower end of the right side plate, the bag body and the box body are entirely or It is a bag-in-box for viscous liquids, which is partially attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is used for viscous liquids such as food seasonings, adhesives, printing inks, etc., it is easy to suck the content liquid and discharge it, and the amount of residual liquid discharged is small, so-called bag so called box. Related to storage and discharge container.

[0002]

[Prior art]

 Traditionally, plastic bags containing viscous liquids such as food seasonings and printing inks have been stored in a rigid cardboard or paperboard outer box and attached to a part of the bags. A large amount of bag-in-boxes were used that could be taken out from the spout for pouring.

A bag-in-box used especially for printing ink or the like may suck a viscous liquid, which is a content, from the spout, and in that case, the bag is deformed and reduced and discharged. It is particularly suitable for viscous liquids that do not like contact with air.

[0004]

[Problems to be solved by the device]

 However, when the viscous liquid stored in the conventional bag-in-box is sucked by using a vacuum suction device or the like, as shown in FIG. 5, the viscous liquid 50 stored in the flexible bag body 10 is As the bag 10 is sucked and reduced, the bag 10 near the plug 30 deforms and shrinks first, and the plug 30 is blocked and cannot be sucked and discharged. There is a problem that it may cause trouble when it is installed and used, and the amount of residual liquid discharged is not small.As a method for forming such a bag-in box, the top and bottom are opened beforehand. Glue the sleeve-shaped bag to the outer box blank and attach the outer box with a sack, and then heat the one opening of the bag with the sack-applied blanks in the shape of a square tube. Closed, through the other opening In the case of a bag filled with a liquid or with a stopper, the upper and lower openings are closed and then the stopper is filled. Since the triangular ears are filled up, the content liquid in this portion (triangular ears) is not discharged and remains in the bag body.

[0005]

[Means for solving the problem]

 The present invention solves the above problems by accommodating a flexible resin film bag or the like in a rigid box-shaped box such as corrugated cardboard or paperboard, and In a bag inbox in which a spigot that penetrates the lower end of the front side plate is attached to the bag, a triangular area including at least the upper end area of the front side plate and the right end section of the left side plate is provided on the inner surface side of the box body. A bag-in-box for a viscous liquid, characterized in that a bag and a box are adhered to all or part of a triangular area including the left end and the lower end of the right side plate, and The upper and lower openings of the bag body are sealed by means such as heat welding, and the triangular ears formed on both ends of the bag body when the lower sealing portion of the bag body is flat are opened outward of the left and right side plates. A large flap is installed under the front side plate. It is characterized in that the small flaps connected to the left and right side plates are folded in, then the large flaps connected to the lower side of the rear side plate are folded in, and the flaps are bonded together. The bag inbox for a viscous liquid according to claim 1.

[0006]

[Action]

 In the bag-in-box of the present invention, when the viscous liquid contained in the bag is sucked and discharged by using a vacuum suction device or the like, as the viscous liquid containing the bag is sucked and reduced, the area at the upper end of the front face plate is reduced. Since the bag body and the box body are adhered to each other with the bag body, the bag body cannot cover the plug body, and the bag body is deformed and reduced in order from the bag body near the plug body. Even if you try to make a close contact with the inner surface of the stopper or the inner surface of the bag in the vicinity of the stopper, the bag and the box are partly separated by the linear part of the diagonal upper end of each triangular area of the left and right side plates. Since it is affixed to the lid, the bag does not come into close contact with the mouthpiece or the lower part of the inner surface of the bag near the mouthpiece. With the diagonal upper end of each triangular area of the face plate as a boundary, The viscous liquid Te suction, there is can be discharged, a easily discharged by sucking viscous liquid, it is possible to provide a bag-in-box for less viscous liquid with discharge residual liquid amount.

Further, in the present invention, as the structure of the bottom portion, since the triangular ear portion of the bag body is sandwiched between the inner large flap and the both small flaps, this ear portion is filled with the liquid content. The bag-in-box does not allow the liquid to enter and has a smaller amount of residual liquid discharged than the one that is glued to the large inner flap.

[0008]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a cross-sectional view of a viscous liquid bag-in-box according to the first embodiment of the present invention, which is a laminate of flexible polyester (15 μm) containing 500 g of printing ink 50 and polyethylene (60 μm). The bag body 10 made of a resin film is housed in a rectangular box body 20 made of paperboard having rigidity of 70 mm, 100 mm, and 85 mm in height, width, and height, and the lower end of the front side plate 23 of the box body 20 is accommodated. In a bag-in-box in which a cylindrical plug body 30 made of polyethylene and having an inner diameter of 10 mm is attached to the bag body 10. A bag 10 and a box are formed at a peripheral linear portion 40 of a triangular region Q including the right end and the lower end of the left side plate 22 and a triangular region R including the left end and the lower end of the right side plate 24. Body 20 and It is a bag-in-box for viscous liquid in which is partially adhered.

FIG. 2 is a plan view of blanks of the box body 20 in the bag-in-box for viscous liquid of the embodiment of FIG. 1, in which a left side face plate 22 and a plug body, which are rectangular through fold lines, respectively. A front side plate 23, a right side plate 24, a rear side plate 25, and a glue margin 26, which have through holes 21 for 30 provided at the lower end, are successively arranged in order, and the upper plate group, the upper plate group, That is, the upper and lower edges of the front side plate 23 are provided with large flaps 27, 27 via fold lines, and the upper and lower edges of the left side plate 22 and the right side plate 24 are provided with small flaps 28, 28, 28, 28 via fold lines. In the blanks of the rigid paperboard box 20 in which the large flaps 27, 27 are respectively connected to the upper and lower edges of the rear side plate 25 via fold lines, the area of the upper end portion of the front side plate 23 is The left and right ends and the circumference of the through hole 21 The bag body 10 and the box body 20 are partially adhered to each other by the linear upper portion and the lower linear portion 40 which are linear with the sides.

Further, a method of attaching the blanks of the box body 20 and the bag body 10 will be described. In FIG. 2, reference numeral 10 is a three-sided bag body which is housed inside the bag-in-box of the present invention and which has an open top and bottom. First, in the state of the blanks 20, the bag body 10 is formed into a triangle of at least the region P at the upper end of the front side plate 23 and the left side plate 22 (located between the front side plate 23 and the rear side plate 25). The bag body and the outer box are attached to the equally divided lower half area Q. Next, the left side plate 22 of the blank for the outer box and the glue margin 26 are glued to each other to carry out a normal sacking process to form a sleeve. At this time, the lower half region R bisected by the right side plate 24 is attached to the bag body and the other right side plate 24.

Next, as a bag-in-box box making method of the present invention, a sealing portion 11 is provided by providing a seal portion 11 by means of heat welding or the like in the opening portion on the upper side of the bag body while the sleeve is kept in the shape of a rectangular tube. After closing, the seal portion 11 is pushed into the tubular body, and then the small flaps 28, 28 and the large flaps 27, 27 are folded in this order, and the gaps between the large flaps 27, 27 are glued to close the upper end.

On the other hand, in the portion corresponding to the bottom portion, similarly to the upper end portion, the seal portion 11 is provided at the opening on the upper side of the bag body by means of heat welding or the like. Next, after expanding each flap to the outside, the seal part is linearly extended so that both ends thereof become triangular ears 12, 12, and then the large flap 27 is first folded (see FIG. 3). ) Then, both small flaps 28, 28 together with the ears 12, 12 are folded over the large flap 27, and finally the large flap 27 is folded in, and each flap is glued to close the bottom. By folding in this way, the ears 12, 12 are in a state of being scissored between the large flap 27 and the both small flaps 28, 28, and moreover, the portion of the ears 12 that corresponds to the bottom of the triangle is the large flap 27, 28 Side edges are securely folded.

In the above-mentioned embodiment, when the sealing portion 11 is provided with the bottom opening of the bag body by means of heat welding or the like, the two films of the ears 12 and 12 are heat-welded to each other in whole or in part. It is preferable to provide the point seal portion 13 by a means so that post work such as box making work can be facilitated and liquid can be prevented from entering that portion.

Here, regarding the bag body 10 made of a flexible resin film or the like of the present invention, a heat-fusible resin film having a proper thickness such as polyethylene or polyester for an ordinary packaging material, or a laminate thereof. Using a resin film or the like, a bag body 10 having an internal capacity of about 0.5 to 20 liters, such as an ordinary three-way seal bag having a mouth opening for spouting, a gastric seal bag or a gusset seal bag, can be used.

Further, regarding the rectangular box body 20 made of a corrugated board or a paper board having rigidity of the present invention, the bag body 10 containing the viscous liquid is prepared by using an ordinary corrugated board or a thick board. A size that can be accommodated without a gap and in which a through hole 21 for the spout body 30 is provided at the lower end portion of the front face plate 23 can be used.

Regarding the plug body 30 that penetrates the lower end of the front side plate 23 of the box body 20 attached to the bag body 10, the bag body 10 is heat-sealed by using ordinary polyethylene or polypropylene. A cylindrical plug body 30 having a disc-shaped flange portion 32 and a fitting structure portion 33 for sealing (not shown) or the like can be molded by an ordinary injection molding method without restriction. The periphery of the mouth opening provided in the bag body 10 is heat-sealed to the flange portion 32 so as to penetrate the through hole 21 for the mouth plug body 30 provided at the lower end portion of the front side plate 23 of 20. The plug body 30 penetrating the lower end of the front side plate 23 of the box body 20 is attached to the bag body 10. In this case, in order to reinforce the plug body 30 attached to the bag body 10, it is preferable to attach the bag body 10 around the plug body 30 to the box body 20.

As a method of filling the bag-in-box of the present invention, the box-made product as described above is first filled with the air in the bag body from the mouth plug body 30. Since the side plates 22 and 24 and the upper half of the non-glued triangular upper half are free with respect to the box, the free portion of the other half enters the rollers when glued and almost all air is discharged. Next, the ink, which is the viscous liquid 50, is filled from the plug body 30 at the place where the air is discharged. At this time, since the bottom ears 12 and 12 are folded at the side edges of the body flap, the entry of the content liquid can be almost prevented, and after filling, the mouth plug body 30 is sealed with a cap or the like.

Next, as a method of using the filled bag-in-box, when the content liquid is sucked from the spout, the free portion is glued to the other half like the discharge of the air. As it comes in, it can be discharged smoothly, and the film in the bag is discharged without worrying about covering the spout. That is, when the viscous liquid 50 stored as shown in FIG. 4 is sucked and discharged using a vacuum suction device (not shown) or the like, as the viscous liquid 50 containing the bag body 10 is sucked and decreases, As shown in FIGS. 1 and 2, since the bag body 10 and the box body 20 are adhered to each other in the region of the upper end portion of the front side plate 23 even if the plug body 30 is closed, the bag body 10 is plugged. The body 30 cannot be closed, and as shown in FIG. 4, the bag body 10 near the mouth plug 30 is deformed and reduced in order, and the bag body 10 is As shown in FIG. 2, even if it is attempted to adhere to the lower inner surface of the bag body 10 in the vicinity thereof, as shown in FIG. 2, the bag body is formed by the linear portions of the diagonal upper ends of the triangular regions of the left and right side plates 22, 24. 10 Since the box body 20 and the bag body 10 are partially attached to each other, the bag body 10 is the bag body in the vicinity of the mouth plug body 30 or the mouth cap body 30. Since it is shown that it does not adhere to the lower part of the inner surface of 0, etc., in the end, the upper end region of the front side plate 23 and the diagonal upper end parts of the triangular regions of the left and right side plates 22 and 24 are finally separated. Then, the viscous liquid can be continuously sucked and discharged until the bag body 10 is folded in two. It is possible to provide a bag-in-box for a viscous liquid with a small amount.

[0019]

[Effect of device]

 The present invention has the above-mentioned configuration, and since the inner bag and the outer box are glued to the lower half of the triangle of the front plate and the side plate, it does not block the spout when discharging, so it is a discharge traverse. In addition, the amount of remaining liquid to be discharged is small, and the content liquid does not enter the corner triangular ear part at the bottom of the bag body, so it is difficult to discharge the content liquid that entered this ear part as in the past. As a result, it is possible to provide a liquid with less residual liquid.

[Brief description of drawings]

FIG. 1 is an explanatory sectional view of a bag-in-box for a viscous liquid according to an embodiment of the present invention.

FIG. 2 is a plan view of box blanks in the bag-in-box for the viscous liquid of the example.

FIG. 3 is an explanatory perspective view showing a part of a box making process in the bag-in-box for viscous liquid of the present invention.

FIG. 4 is an explanatory sectional view showing a state of sucking and discharging the contained viscous liquid in the bag-in-box for viscous liquid of the present invention.

FIG. 5 is an explanatory cross-sectional view showing a state of sucking and discharging the contained viscous liquid in the conventional bag-in-box.

[Explanation of symbols]

 10 Bag 11 Heat-sealing Part 20 Box 21 Through Hole 22 Left Side Plate 23 Front Side Plate 24 Right Side Plate 25 Rear Side Plate 26 Glue 27 Large Flap 28 Small Flap 30 Plug

Claims (2)

[Scope of utility model registration request] 1. An opening for accommodating a flexible bag made of a resin film or the like in a rectangular parallelepiped box body such as a rigid corrugated board or a paperboard and penetrating a lower end portion of a front side plate of the box body. In the bag-in-box with the plug attached to the bag,
On the inner surface side of the box body, at least the triangular region including the upper end region of the front side plate and the right end portion of the left side plate, and the triangular region including the left end portion and the lower end portion of the right side plate, the bag body and the box body. A bag-in-box for viscous liquids, characterized in that and are adhered in whole or in part. 2. The bag body is sealed at its upper and lower openings by means such as heat-welding, and triangular ears formed on both ends of the bag body when the lower seal portion of the bag body is flattened outward from the left and right side plates. In the open state, fold the large flaps that are continuously provided below the front side plate, then fold the small flaps that are continuously provided below the left and right side plates, and finally, the large flaps that are continuously provided below the rear side plate. The bag-in-box for a viscous liquid according to claim 1, characterized in that flaps are folded and the respective flaps are bonded together.