JP2022042258A - Bag-in-box - Google Patents

Abstract

To provide a bag-in-box capable of facilitating a fixing operation by opening a part of a paper container to pull out a spout to an outside of the paper container when opening a plug, according to a double container whose outside is made of the paper container, that is formed by storing an inner bag comprising the spout with a plastic film as a substrate on an inner side thereof.SOLUTION: According to a bag-in-box, an outer box is a hexahedron, and an inner bag is capable of storing liquid. Circular perforations are provided above a front side trunk part. The circular perforations are cut out to form an opening, and a spout is exposed by protruding to an outside of the outer box from the opening. Further, a flap and a knob part that are continuous from the front side trunk part are covered on a top face and a slope thereof to have the outer box as a heptahedron to which the slope is added. The knob part is inserted and fixed to a slit of a ridge line between the flap and a rear side trunk part, and is made to be in a state where liquid of a content can be poured out.SELECTED DRAWING: Figure 1

Description

The present invention relates to a double container. In particular, the outside is made of a paper container, and the inside is configured by accommodating an inner bag based on a plastic film, and is related to a bag-in-box that can be used as a liquid container.

In the modern lifestyle, in the distribution and sale of liquid products, many liquid containers using plastic films and products using liquid paper containers are produced, distributed, sold and delivered to consumers. ..

For example, beverages such as juices, milk beverages, and liquors are filled in a liquid container such as a bottle, a plastic bottle, or a liquid paper container by a liquid filling device at a manufacturer, sealed, and sent out as a commercial product.

Among them, there is a container called a bag-in-box, which is a double container in which an inner bag called a bag using a plastic film is filled with a liquid and then spouted and stored in a paper box.

In the case of such a double container, since the outside is a paper container, it can be made into a rectangular parallelepiped or cubic shape, so that it is possible to improve inventory efficiency and transportation efficiency in a warehouse or the like. ..

In addition, the outer paper container can enhance mechanical strength such as impact resistance and block the influence of the environment such as ultraviolet rays. In addition, the outer paper container can be easily decorated on the surface such as printing, and the outer paper box is more convenient to carry and easier to handle than the plastic container as it is.

In addition, since the inside is an inner bag made of a plastic film as a base material, it is suitable for storing liquids, and the required amount can be taken out each time by opening and closing the spout. Furthermore, when disposing of the used double container, the paper container and the inner bag based on the plastic film can be easily separated, the volume can be reduced, and the container can be used as an environment-friendly liquid container. It has become widely accepted.

In the case of such a double container that can store liquid, the spout attached to the inner bag can be taken out when necessary by protruding outward from the outer paper container and exposing it. , Can be done more conveniently.

At this time, as a preparation before use, the spout is provided with an opening and a continuous flap at the opening in the outer paper container, and after the spout is pulled out from the opening, the spout is placed at the opening of the paper container. Since it requires work before use such as fixing by using, complicatedness was unavoidable.

Alternatively, if the spout is exposed by protruding it from the paper container in advance, a plastic part for fixing the spout is required, and the exposed spout or the like causes problems in stacking and handling. was there.

Patent Document 1 proposes a bag-in-box for liquids that is convenient for disassembly, separation, and sorting after use. However, in the state before use, the paper container is slanted on one side of a rectangular parallelepiped. It has a seven-sided shape cut into a rectangular parallelepiped shape, and the spout is exposed, and there is a problem that the shape of the paper container and the exposed spout interfere with stacking and handling.

Alternatively, if an inner bag with a spout is built in a rectangular parallelepiped paper container, the spout is projected outward to expose it, and then fixed and opened, it is necessary to manually perform the series of assembly work. Yes, it required complicated work.

FIG. 1 is a schematic perspective view (partially perspective view) for explaining a general bag-in-box. In the example of the general bag-in-box (100) shown in FIG. 1, the outer box (10) is a heptahedron, which is a surface descending from the top surface (16) to the front body portion (12). 17) is provided, and a spout (51) continuous with the inner bag (50) protrudes from the slope (17) to the outside of the outer box (10) and is fixed.

Since the bag-in-box (100) in such a state is made in advance with an outer shape including the slope (17), it is inconvenient because it hinders stacking in transportation, storage, and handling.

Further, in order to put the inner bag (50) filled with liquid inside the outer box (10) and fix the spout (51) to the slope (17) for assembly work, sometimes a separate member for fixing. In some cases, the cost and labor of mounting are required. In addition, the work of aligning the spout (51) with the cutout portion and the opening of the outer box (10) is complicated.

In the present invention, these points are improved, and it consists of a cubic-shaped outer box and an inner bag housed inside. When opening the cap, a part of the paper container is opened and the spout is pulled out to the outside of the paper container. It is intended to provide a bag-in-box that can be easily fixed.

Japanese Unexamined Patent Publication No. 2018-1229212

The present invention has been made in view of such a situation, and is a double container having a paper container on the outside and an inner bag having a spout as a base material on the inside and containing a spout. At the time of plugging, it is an object of the present invention to provide a bag-in-box capable of opening a part of a paper container and easily pulling out and fixing the spout to the outside of the paper container.

The invention according to claim 1 is a means for solving the above problems.
It is a double container consisting of an outer box made of paper and an inner bag made of a plastic film as a base material.
The outer box has a rectangular parallelepiped shape, and the inner bag is equipped with a spout to store liquid.
The spout has a groove at its base for fixing to the outer box.
The outer box consists of six surfaces: top, front torso, left torso, right torso, back torso, and bottom.
The top surface is formed by overlapping three layers.
The innermost layer of the top surface has a flap with a notch that is continuous from the left side of the body and the right side of the body.
It is folded at a right angle from the left and right to the inside and is butted.
This notch is provided on the front body side of the mountain fold line provided vertically in the center of the flap.
In the middle layer of the top surface, flaps continuous from the rear fuselage are folded at right angles from the rear side to the front side and overlapped.
A slit is formed in the ridgeline between this flap and the rear fuselage.
On the outermost layer of the top surface, flaps that are continuous from the front body and knobs that are continuous to it are folded at right angles toward the rear and overlap.
At the top of the front torso, there is a circular perforation that can be cut out.
An outer box is formed between the upper part of the front torso and the upper part of the left and right torso with perforations on the ridgeline.
When taking out the liquid of the contents, grasp the knob portion with a finger and pull it toward the front side to cut the perforation of the ridgeline.
Cut out the cuttable circular perforations on the anterior fuselage to form an opening.
Raises the flaps of the middle layer posteriorly, continuous from the posterior torso, exposing the notched flaps of the innermost layer, continuous from the left and right torso.
The mountain fold line in the center of the flap with this notch pushes down the front fuselage side of the flap to form a slope that descends from the top to the front fuselage.
Overlay on this slope, fold the upper front corner of the left and right torso in a mountain fold and fold it from left to right to the inside.
The notch of the flap of the innermost layer continuous from the left side body and the right side body is sandwiched and fixed in the groove of the spout of the inner bag housed inside the outer box.
The spout is projected from the circular opening to the outside of the outer box to be exposed.
Furthermore, the flaps continuous from the front body and the knobs continuous with it are covered with this slope and the top surface, and the outer box is made into a heptahedron with a slope added.
The knob is inserted and fixed in the slit of the ridgeline between the flap and the rear body.
It is a bag-in-box characterized by making it possible to pour out the liquid of the contents.

According to the present invention, the outer side is made of a paper container, and the inner side is a double container in which an inner bag having a spout and a plastic film as a base material is stored. It is possible to provide a bag-in-box capable of easily performing the work of opening the bag and pulling the spout out of the paper container to fix it.

In particular, since the outer box is initially hexahedron, it is easy to stack in storage and the like, and there is a great merit in terms of transportation efficiency. In addition, when opening the cap for pouring out the contents, a slope is formed on the top surface and the upper part of the front body, the spout can be pulled out, and it can be easily fixed to the outer box, which is excellent in convenience. It is a bag-in-box.

FIG. 1 is a schematic perspective view (partially perspective view) for explaining a general bag-in-box. FIG. 2 is a schematic perspective view (partially perspective view) for explaining the configuration of the bag-in-box according to the present invention. FIG. 3 is a schematic perspective view for explaining the appearance of the outer box in one embodiment of the bag-in-box according to the present invention. FIG. 4 is a planar development schematic view of the outer box in one embodiment of the bag-in-box according to the present invention. FIG. 5 is a schematic perspective view for explaining a state in which a slope of an outer box is formed in one embodiment of the bag-in-box according to the present invention. FIG. 6 illustrates, in one embodiment of the bag-in-box according to the present invention, a state in which a flap continuous from the front body portion, a knob portion continuous thereto, and a flap continuous from the rear body portion are caused. It is a perspective schematic diagram. FIG. 7 is a schematic perspective view for explaining a state in which a slope is formed in one embodiment of the bag-in-box according to the present invention. FIG. 8 is for explaining a state in which the outer box is a seven-sided body to which a slope is added, the spout is pulled out and fixed, and the liquid of the contents can be poured out in one embodiment of the bag-in-box according to the present invention. It is a schematic view (partially perspective) of.

Hereinafter, a more detailed description of the present invention will be added with reference to FIGS. 2 to 8. However, the present invention is not limited to the examples shown here. The present invention is specified by the claims.

FIG. 2 is a schematic perspective view (partially perspective view) for explaining the configuration of the bag-in-box according to the present invention.

The bag-in-box (100) according to the present invention is a double container composed of an outer box (10) made of paper and an inner bag (50) made of a plastic film as a base material, and is an outer box (10). ) Is a rectangular shape, and has a top surface (16), a front body (12), a left body (13), a right body (14), a rear body (15), and a bottom surface (11). It consists of 6 sides. The inner bag (50) is provided with a spout (51) and can store a liquid inside.

The plastic film is a film made of a polymer resin composition, for example, polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide (nylon-6, nylon-66, etc.), Polyethylene or the like can be used, and it is appropriately selected according to the application.

In particular, when polypropylene or polyethylene terephthalate is used as a plastic film, it is more preferable in terms of film strength and price. In addition, when a stretched polyamide film is used, it is possible to impart toughness against piercing and impact resistance to the laminated body.

The bag making can be made by using a plastic film as a base material, for example, by providing a sealant layer on the inner surface of the inner bag (50), facing the sealant layers, and sealing the bags.

Of the thermoplastic resins, a polyolefin resin is generally used as the material of the sealant layer. Specifically, a low density polyethylene resin (LDPE), a medium density polyethylene resin (MDPE), and a linear low density polyethylene resin are used. (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α-olefin copolymer, ethylene-methacrylic acid resin copolymer and other ethylene-based resins, polyethylene-polybutene blend resin, homopolypoly resin Polypropylene-based resins such as (PP), a propylene-ethylene random copolymer, a propylene-ethylene block copolymer, and a propylene-α-olefin copolymer can be used.

To form the sealant layer, a molten resin can be formed by using an extruder or the like to form a layer on a plastic film. Alternatively, it is also possible to form a sealant layer on the surface of the plastic film by laminating a material that has been formed into a film in advance by laminating.

As the spout (51), for example, a molded product of a thermoplastic resin can be used, which can also be adhered by sealing with the sealant layer. The inner bag (50) can be sealed by covering the spout (51) with a cap or the like.

FIG. 3 is a schematic perspective view for explaining the appearance of the outer box in one embodiment of the bag-in-box according to the present invention.

As described above, the outer box (10) of the bag-in-box (100) according to the present invention has a rectangular parallelepiped shape, and has a top surface (16), an anterior body (12), a left body (13), and a right body. It consists of six surfaces: a portion (14), a rear body portion (15), and a bottom surface (11). The top surface (16) is a shaded surface in FIG.

Since the outer box (10) has a rectangular parallelepiped outer shape, it can be easily stacked and can be a bag-in-box (100) that is highly convenient in each of distribution, inventory, and handling situations.

Nevertheless, when trying to take out the liquid of the contents, in the bag-in-box (100) according to the present invention, the spout (51) can be easily pulled out to the outside of the outer box (10) and fixed. The liquid can be taken out without any trouble.

First, on the upper part of the front body portion (12), a cutout circular perforation (20) is provided for pulling out the spout (51) to the outside.

Further, in the example shown in FIG. 3, on the top surface (16), a flap (22) continuous from the front body portion (12) and a knob portion (23) continuous with the flap (22) are provided on the rear side of the outer box (10). It is visible that it is folded at a right angle toward the top to form the top surface (16).

Between the upper part of the front side body portion (12) and the upper part of the left side body part (13) and the right side body part (14), perforations (21) of ridges are provided on the left and right, and an outer box (10) is provided. ) Is formed.

The tearing of the perforations (21) on the ridge forms a slope that descends from the top surface (16) toward the anterior trunk (12) in order to pull the spout (51) out of the outer box (10). However, the details of this work will be described later in the description using FIGS. 7 to 8.

In the example shown in FIG. 3, the top surface (16) is provided with perforations (24) on both the left and right sides of the flap (22) continuous from the front body portion (12) and the knob portion (23) continuous therewith. By separating these at the perforation (24), the flap (22) and the knob portion (23) can be formed.

The front torso (12) is provided with a mountain fold line (25), which is the upper part of the front torso (12), the upper part of the left side torso (13) and the upper part of the right side torso (14). It is located at the lower end of the perforation (21) of the ridgeline on the left and right between them.

In the state shown in FIG. 3, the mountain fold line (25) is in a flat state, but when forming a slope described later, it becomes a ridgeline at the lower end of the slope.

Further, on the top surface (16), a flap (22) continuous from the front body portion (12) and a knob portion (23) continuous with the flap (22) are visually shown, and the flap (22) has a mountain fold. A line (27) is provided.

In the state shown in FIG. 3, the mountain fold line (27) is in a flat state, but when forming a slope described later, it becomes a ridgeline at the upper end of the slope. Details of this work will be described later in the description using FIGS. 7 to 8.

The top surface (16) is provided with a mountain fold line (28) at the boundary between the flap (22) and the knob portion (23) continuous to the flap (22), which is from the front top surface (16) to the front body portion (12). In the formation of the slope descending toward), the top surface (16) is fixed again, and the details of this work will be described later in the description using FIGS. 7 to 8.

Further, an oblique mountain fold line (26) is provided from the top surface (16) to the front side body portion (12) at the upper part of the right side body portion (14), which is from the top surface (16) to the front side body portion. In the formation of the slope descending toward the portion (12), it is a portion folded into the slope surface to form an intermediate layer of the slope.

A similar mountain fold line is also provided on the left side body (15), but in the example shown in FIG. 3, it is on the back side of the outer box (10) and is invisible. Details of these folding operations on the slope surface will also be described later in the description using FIGS. 7 to 8.

FIG. 4 is a planar development schematic view of the outer box in one embodiment of the bag-in-box according to the present invention.

In the plan view of one embodiment shown here, all the fold rule lines shown are mountain folds, and the outer box (10) of the rectangular parallelepiped according to the present invention is provided so as to be able to form the outer box (10) of the rectangular parallelepiped. Inside the box (10), an inner bag (50) made of a plastic film provided with a spout (51) capable of storing liquid contents as a double container can be stored inside.

In the bag-in-box (100) according to the present invention, when the liquid of the contents is to be poured out from the spout (51) and taken out, the spout (51) is easily pulled out and fixed to the outside of the outer box (10). It is possible to take out the liquid of the contents without any trouble.

At this time, at the upper part of the outer box (10), a slope descending from the top surface (16) to the front body portion (12) is formed, and a circular perforation (20) is cut out to form an opening, and the inner bag (50) is used. ) Is provided with a mechanism capable of pulling out and fixing the spout (51) to the outside of the outer box (10). This work can be easily performed using fingers.

The top surface (16) is formed by overlapping three layers, and the innermost layer of the top surface (16) has a flap (30) with a notch continuous from the left side body (13) and a right side body. A flap (33) with a notch continuous from (14) is arranged so as to be butt-matched by folding at a right angle from the left and right to the inside.

The notch of the flap (30) with the notch is indicated by the notch (32), and the notch of the flap (33) with the notch is indicated by the notch (34).

The notch (32) and the notch (34) are flaps (30) with a notch.
, And a flap (33) with a notch, which is provided vertically on the front body portion (12) side of the mountain fold line (31) and the mountain fold line (35).

On the middle layer of the top surface (16), flaps (36) continuous from the rear fuselage (15) can be folded at right angles from the rear side to the front side and overlapped with the flaps (36). A slit (37) is formed in the ridgeline between the rear body portion (15) and the rear body portion (15).

On the outermost layer of the top surface (16), a flap (22) continuous from the front body portion (12) and a knob portion (23) continuous to the flap (22) are arranged, and toward the rear side of the outer box (10). , Can be folded at a right angle along the mountain fold line (29) and overlapped to form a top surface (16) to form the outermost layer thereof.

A cutoutable circular perforation (20) is provided on the upper portion of the front body portion (12). Further, a perforation (21) of the ridge line is provided on the ridge line between the upper part of the front side body portion (12) and the upper part of the left side body portion (13) and the right side body portion (14).

The perforations are also provided with perforations (24) on the left and right of the flap (22) continuous from the front body portion (12) and the knob portion (23) continuous to the flap (22), and these left and right trapezoidal shaped portions are provided. By separating, the flap (22) and the knob portion (23) can be formed.

Further, perforations (19) are provided on the ridgeline on the front side body portion (12) side from the vertical mountain fold line (35) of the right side body portion (14) and the flap (33) with a notch. The tearing of the perforation (19) makes it possible to push the flap (33) with the notch downward along the mountain fold line (35) to form the innermost layer of the slope (17).

This also applies to the flap (30) having a continuous notch on the left side body (13).

The work of cutting out, separating, and tearing these perforations is performed when forming the slope, which will be described later.

From the upper part of the front body (12), the flap (22) on the top surface (16) and the knob (23) continuous with it are provided with several horizontal mountain fold lines, of which mountain folds are provided. The line (29) forms a ridge between the anterior body (12) and the top (16) of the hexahedron, which is the original form of the outer box.

The mountain fold line (25) forms a slope that descends from the top surface (16) to the front body portion (12) when the liquid of the contents is taken out, and when the spout (51) of the inner bag (50) is pulled out. It is a ridge that forms the lower end of the slope.

The mountain fold line (27) forms a slope that descends from the top surface (16) to the front body (12) when the liquid of the contents is taken out, and when the spout (51) of the inner bag (50) is pulled out, the mountain fold line (27) forms a slope. It becomes the ridgeline that forms the upper end of the slope.

The mountain fold line (28) is located at the boundary between the flap (22) and the knob portion (23), and when the liquid of the contents is taken out, the flap (22) covers the top surface and is formed again, and then the mountain is formed. The knob portion (23) can be bent at a right angle along the folding line (28) and inserted into the slit (37) to fix the flap (22). At this time, the mountain fold line (28) inserted into the slit (37) becomes a ridge line between the top surface (16) and the rear body portion (15).

FIG. 5 is a schematic perspective view for explaining a state in which a slope of an outer box is formed in one embodiment of the bag-in-box according to the present invention.

As described above, in the bag-in-box (100) according to the present invention, the spout (51) of the inner bag (50) is pulled out and fixed to the outside of the outer box (10) in a state where the slope (17) is formed. Allows stable pouring.

A circular perforation (20) is located at the center of the slope (17), and a circular opening can be formed by cutting out the perforation (20). Inside this circular opening, a quadrangle formed by abutting the notch (32) and the notch (34) is exposed. The spout (51) can be pulled out from this portion to the outside of the outer box (10).

On the other hand, the spout (51) has a groove at the base thereof for fixing to the outer box (10), and the quadrangular portion is sandwiched between the groove portions of the drawn spout (51) to be sandwiched between the spout (51) and the spout (51). Can be fixed to the outer box (10).

The slope (17) is formed so as to descend from the top surface (16) toward the front body portion (12), and the outer box (10) has changed from the original hexahedron to a heptahedron. Therefore, the area of the top surface (16) is reduced, and the ridgeline between the original top surface (16) and the front body portion (12) has a mountain fold line (29) on the surface of the slope (17). It has become flat and retains its traces.

In the hexahedral state, the top surface (16) consists of a flap (22) continuous from the anterior trunk (12) and a knob portion (23) continuous to the flap (22), but the perforations are cut out or torn to form a slope. In the state of the heptahedron forming (17), the flap (22) forms a ridge line with a mountain fold line (27) and is divided into a portion that becomes a slope (17) and a portion that becomes a top surface (16). There is.

Further, the knob portion (23) is bent at a right angle by a mountain fold line (28) and further inserted into a slit (37) to fix the slope (17) and the top surface (16). Further, this mountain fold line (28) forms a ridge line between the top surface (16) and the rear body portion (15).

FIG. 6 illustrates, in one embodiment of the bag-in-box according to the present invention, a state in which a flap continuous from the front body portion, a knob portion continuous thereto, and a flap continuous from the rear body portion are caused. It is a perspective schematic diagram.

When taking out the liquid of the contents, the spout (51) is pulled out to the outside of the outer box (10) and fixed, but in the example shown in FIG. 6, the knob portion (23) is first grasped by a finger and flapped. Together with (22), pull in the direction of the arrow (2) toward the front side, and cut out the cuttable circular perforation (20) of the front side body (12) to form an opening, and form the rear side body. It shows a state in which the flap (36) of the middle layer of the top surface (16), which is continuous from the portion (15), is raised in the direction of the arrow (3).

A flap (30) with a notch continuous from the left fuselage (13) of the innermost layer constituting the top surface (16) by causing the flap in the direction of the arrow (2) and the arrow (3), and the right side. A flap (33) with a continuous notch from the body portion (14) is exposed in a state of being folded at a right angle from the left and right to the inside and abutted against each other.

In the bag-in-box (100) according to the present invention, the outer box (10) contains an inner bag (50) with a spout (51) inside, but in FIG. 6, the outer box (10) is stored. )
It is not shown because it is an explanation of.

FIG. 7 is a schematic perspective view for explaining a state in which a slope is formed in one embodiment of the bag-in-box according to the present invention.

When taking out the liquid of the contents, the work of pulling out the spout (51) to the outside of the outer box (10) and fixing it is performed. 23) and the flap (22) are pulled in the direction of the arrow (4) to tear the perforations (21) on the ridge.

Subsequently, on the innermost layer of the top surface (16), a flap (30) having a notch continuous from the left side body (13) and a flap (33) having a notch continuous from the right side body (14) are provided. Fold the mountain fold line (31) and the mountain fold line (35) at the part that is folded at a right angle from the left and right to the inside, and the flap with a notch (30) and the flap with a notch (33). ) Is pushed down in the direction of the arrow (5) to form the innermost layer of the slope (17).

When this work is performed, it is provided on the right side body portion (14) and the ridge line on the front side body part (12) side from the vertical mountain fold line (35) of the flap (33) with a notch. By tearing the perforation (19), it is possible to push down in the direction of the arrow (5) and form a slope (17). The perforations (19) are shown in the plan view of FIG. 4 and the schematic perspective view of FIG.

FIG. 8 is for explaining a state in which the outer box is a seven-sided body to which a slope is added, the spout is pulled out and fixed, and the liquid of the contents can be poured out in one embodiment of the bag-in-box according to the present invention. It is a schematic view (partially perspective) of.

When taking out the liquid of the contents, the work of pulling out the spout (51) to the outside of the outer box (10) and fixing it is performed. The upper corners of (13) and the right side body (14) near the front body (12) are folded along the mountain fold line (26) toward the slope (17) to form an intermediate layer of the slope (17). The folded part has a triangular shape.

Subsequently, the knob portion (23) is pulled toward the rear of the outer box in the direction of the arrow (8), and the outermost layer is covered with the upper part of the front trunk portion (12) and the flap (22) continuous thereto, and the slope is formed. (17) and the top surface (16) are formed.

Further, the knob portion (23) can be bent at a right angle along the mountain fold line (28) and inserted into the slit (37) in the direction of the arrow (9) to fix the flap (22). At this time, the mountain fold line (28) becomes a ridgeline between the top surface (16) and the rear body portion (15).

At the same time as the reconstruction of the slope (17) and the top surface (16), the spout (51) of the inner bag (50) is directed in the direction of the arrow (1) from the opening formed by the circular perforations (20). Can be pulled out.

Subsequently, the flap with the notch (30) and the flap with the notch (33) are sandwiched and fixed in the groove provided in the spout (51) so that the liquid of the contents can be poured out. be able to. This series of operations can be easily performed using fingers.

As described above, according to the present invention, the outer side is a double container made of a paper container and the inner side is a double container containing an inner bag having a spout as a base material of a plastic film. It is possible to provide a bag-in-box capable of easily performing the work of opening a part of the paper container and pulling the spout out of the paper container to fix it.

1 ... Arrow 2 ... Arrow 3 ... Arrow 4 ... Arrow 5 ... Arrow 6 ... Arrow 7 ... Arrow 8 ... Arrow 9 ... Arrow 10 ... Outside Box 11 ... Bottom surface 12 ... Front body 13 ... Left body 14 ... Right body 15 ... Rear body 16 ... Top surface 17 ... Slope 19 ... Perforation 20 ... Circular perforation 21 ... Ridge perforation 22 ... Flap 23 ... Knob 24 ... Perforation 25 ... Mountain fold line 26 ... Mountain fold line 27 ... Mountain fold line 28 ... Mountain fold line 29 ... Mountain fold line 30 ... Flap with notch 31 ... Mountain fold line 32 ... Notch 33 ... Flap with notch 34・ ・ ・ Notch 35 ・ ・ ・ Mountain fold line 36 ・ ・ ・ Flap 37 ・ ・ ・ Slit 50 ・ ・ ・ Inner bag 51 ・ ・ ・ Spout 100 ・ ・ ・ Bag in box

Claims (1)

It is a double container consisting of an outer box made of paper and an inner bag made of a plastic film as a base material.
The outer box has a rectangular parallelepiped shape, and the inner bag is equipped with a spout to store liquid.
The spout has a groove at its base for fixing to the outer box.
The outer box consists of six surfaces: top, front torso, left torso, right torso, back torso, and bottom.
The top surface is formed by overlapping three layers.
On the innermost layer of the top surface, a flap with a notch continuous from the left side body and the right side body is folded at a right angle from the left and right to the inside and abutted against each other.
This notch is provided on the front body side of the mountain fold line provided vertically in the center of the flap.
In the middle layer of the top surface, flaps continuous from the rear fuselage are folded at right angles from the rear side to the front side and overlapped.
A slit is formed in the ridgeline between this flap and the rear fuselage.
On the outermost layer of the top surface, flaps that are continuous from the front body and knobs that are continuous to it are folded at right angles toward the rear and overlap.
At the top of the front torso, there is a circular perforation that can be cut out.
An outer box is formed between the upper part of the front torso and the upper part of the left and right torso with perforations on the ridgeline.
When taking out the liquid of the contents, grasp the knob portion with a finger and pull it toward the front side to cut the perforation of the ridgeline.
Cut out the cuttable circular perforations on the anterior fuselage to form an opening.
Raises the flaps of the middle layer posteriorly, continuous from the posterior torso, exposing the notched flaps of the innermost layer, continuous from the left and right torso.
The mountain fold line in the center of the flap with this notch pushes down the front fuselage side of the flap to form a slope that descends from the top to the front fuselage.
Overlay on this slope, fold the upper front corner of the left and right torso in a mountain fold and fold it from left to right to the inside.
The notch of the flap of the innermost layer continuous from the left side body and the right side body is sandwiched and fixed in the groove of the spout of the inner bag housed inside the outer box.
The spout is projected from the circular opening to the outside of the outer box to be exposed.
Furthermore, the flaps continuous from the front body and the knobs continuous with it are covered with this slope and the top surface, and the outer box is made into a heptahedron with a slope added.
The knob is inserted and fixed in the slit of the ridgeline between the flap and the rear body.
A bag-in-box characterized by making it possible to pour out the liquid of the contents.

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