JP2022083599A - Carton for bag-in-carton - Google Patents

Abstract

Kind Code: A1 A double-layered container comprising a paper container on the outside and an inner bag made of a plastic film as a base material and having a spout on the inside. To provide a carton for a bag-in-carton in which a spout can be easily pulled out and fixed to the outside of a paper container. The carton has a hexahedral shape, the inner bag can contain a liquid, and circular perforations are provided on the upper part of the front body, and the circular perforations are cut to form an opening, and a spout is provided. , exposed by protruding from the opening to the outside of the carton, and furthermore, the flap and the knob part continuous from the front side body part are covered with this slope and the top surface, and the carton is made into a heptahedron with the slope added, and the knob part is This carton for bag-in-carton is characterized in that it is inserted into the slit on the ridgeline between the flap and the rear side body and fixed so that the liquid content can be poured out. [Selection drawing] Fig. 1

Description

The present invention relates to a double container. In particular, it relates to a carton for a bag-in-carton, which is composed of a paper container on the outside and is configured by accommodating an inner bag based on a plastic film on the inside and 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 their daily lives. Supports.

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-carton, which is a double container in which an inner bag called a bag made of 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 formed into a rectangular parallelepiped or cubic shape, so that it is easy to stack, and inventory efficiency and transportation efficiency in warehouses are improved. It is possible.

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 can be sealed by opening and closing the spout, and the required amount can be taken out each time. 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. 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, the spout is pulled out from the opening, and then 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 to be exposed by protruding it from the paper container in advance, a plastic part for fixing the spout may be required, and the spout that is projected and exposed may be used for stacking or handling. There was a problem that it hindered.

Patent Document 1 proposes a carton for a bag-in-carton for liquids, which is convenient for disassembly, separation, and sorting after use. However, a paper container is provided in a state before use. Is a seven-sided body shape in which one side of a rectangular parallelepiped is cut diagonally, and it is difficult to correspond to a wrap-round type packaging form. In addition, the spout protrudes to the outside and 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 perspective (partially perspective) schematic diagram for explaining a general bag-in carton.

In this example, the carton (10) is a heptahedron, with a top surface (16), a bottom surface (11), an anterior torso (12), a left torso (13), a right torso (14), and a rear torso. In addition to the hexahedron of the portion (15), a slope (17) which is a surface descending from the top surface (16) to the front body portion (12) is provided, and the inner bag (50) is previously provided from the slope (17). A spout (51) continuous with the carton (10) protrudes to the outside of the carton (10) and is fixed.

The carton (10) for a bag-in-carton having such a form does not fit into the automatic packaging form of the wrap-round method as it is, and since it is made in advance with an outer shape including a slope (17), it is transported and stored. In terms of handling, it hindered stacking and was inferior in convenience.

Also, in order to put the inner bag (50) filled with liquid inside the carton (10) and fix the spout (51) to the slope (17) for assembly work, sometimes a separate member for fixing is provided. In some cases, it was necessary, costly, and troublesome to install. In addition, the work of aligning the spout (51) with the cutout portion and the opening portion of the carton (10) is complicated.

Japanese Unexamined Patent Publication No. 2018-1229212

The present invention has been made in view of this situation, and is a wrap-round method in a double container composed of a carton which is an outer box made of paper and an inner bag having a spout as a base material of a plastic film. In addition to being compatible with packaging, in the initial state of a hexahedral carton, when opening the carton, a part of the carton is opened, and the spout of the inner bag is pulled out of the paper container and fixed. It is an object of the present invention to provide a carton for a bag-in-carton that can easily perform the work of forming a seven-sided body with a slope added.

The invention according to claim 1 is a means for solving the above problems.
In a carton for a bag-in-carton consisting of a carton that is an outer box made of paper and an inner bag made of a plastic film as a base material.
Carton is in the initial state of assembly
Its outer shape is a rectangular parallelepiped consisting of six surfaces: the top surface, the front side body part, the left side body part, the right side body part, the rear side body part, and the bottom surface.
Inside it is equipped with a spout and can store an inner bag that can store liquid,
The spout is made of a plastic molding and has a groove at the base for fixing to the carton.
The top surface of the carton is formed by folding the flaps that connect upward from the body of the four sides at right angles and stacking them in three layers.
In the innermost layer of the top surface, flaps continuous from the rear torso are folded from the back to the front.
This flap has a concave notch on the side of the tip,
This flap has a fold ruled line in the width direction inside the notch,
In addition, a slit is formed in the center of the ridgeline between this flap and the rear fuselage.
In the middle layer of the top surface, flaps that are continuous from the front torso are folded toward the back.
This flap has two vertical cut lines that form the central knob at the tip, and two perforations that can be continuous and downward to form a C-shape. It is formed to be tearable and is
Further, this flap is provided with a fold ruled line (A) in the width direction between the ridge line between the front body and the V-shape.
On the outermost layer of the top surface, flaps continuous from the left side body and the right side body are folded inward from the left and right and abutted at the center, and are laminated on the intermediate layer.
These left and right flaps have perforations that overlap the cut lines and cut lines that overlap the perforations, which coincide with the portion formed in the shape of a C downward with the central part of the tip as a knob. It is provided,
At the top of the front torso, there is a circular perforation that can be cut out.
Below the circular perforations on the front body, a fold ruled line (B) is provided in the width direction.
There are two perforations from both ends of this fold ruled line (B) to the center of the left side trunk and the ridgeline between the upper side of the right side and the flap.
Furthermore, two perforations are provided on the ridgeline toward the anterior trunk, following the perforations leading to the central part.
When taking out the liquid of the contents,
The outermost layer of the carton's top surface and the middle layer of the top surface, the knob part is pinched with fingers and raised together, and the perforations of the knob part and the part formed in the shape of a C are cut and opened. ,
Further draw toward the front side, and the perforation from both ends of the fold line (B) to the ridge line between the upper side of the left and right side body and the flap, and the perforation of the ridge line toward the front side body are torn apart to form a triangle. Overhangs are formed continuously on the left and right sides of the front torso,
Subsequently, the cuttable circular perforations are cut to form an opening.
Next, the innermost flap, which is continuous from the posterior torso, is raised backwards.
Next, fold the left side of the outermost layer and the rest of the flaps that are continuous from the right side of the body, which were cut at the time of opening and the flaps that were torn at the perforations, at right angles from the left and right to the inside.
Next, fold the flap forward, continuing from the rear fuselage,
Furthermore, with the fold ruled line, a slope that goes down to the front is formed, and at the same time,
The concave notch on the tip side is fitted into the groove of the spout to fix it, and the spout is projected from the circular opening to expose it.
Next, cover the slope and the top surface together with two layers, a continuous knob part from the front body part, a part formed in a C shape, and a flap of the middle layer of the top surface cut out in the same shape. Then, a slope that descends from the fold ruled line (A) to the fold ruled line (B) is formed.
At this time, the overhang of the triangle on the upper part of the front fuselage is inserted inside the carton.
The knob is inserted into the slit of the ridge line between the flap continuous from the rear body and the rear body, and fixed.
The carton is a heptahedron with this slope added to the hexahedron in the initial state of assembly.
A carton for a bag-in-carton, characterized in that the liquid of the contents can be poured out.

According to the present invention, it is possible to support a wrap-round type packaging form in a double container composed of a carton which is an outer box made of paper and an inner bag having a spout as a base material of a plastic film. In addition, in the initial state of a hexahedral carton, when opening the carton, a part of the carton is opened, the spout of the inner bag is pulled out to the outside of the paper container and fixed, and a seven-sided body with a slope is added. It is possible to provide a carton for a bag-in-carton that can be easily performed.

In particular, since the carton is a hexahedron in the initial state, the double container can support the automatic packaging form of the wrap-round method, and in addition, it is easy to stack in storage and handling, and the transportation efficiency is high. The merit is also great in terms of. Since the spout is also stored in the carton in the initial state, there is no risk of external contact or contamination, which is also preferable in terms of hygiene.

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 fuselage to pull out the spout and fix it to the carton without the need for a separate member for fixing. It is a carton for bag-in-carton that can be easily performed and has excellent convenience.

In addition, since the perforations are not exposed on the ridgeline of the hexahedron carton except for the top surface, which has three layers and is rich in strength, for example, when making a box when an external force is applied. , The risk of tearing due to perforations can be reduced.

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

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 an embodiment of a carton for a bag-in-carton according to the present invention.

The carton (10) for the bag-in-carton (100) according to the present invention is an outer box of a double container composed of a carton made of paper (10) and an inner bag (50) made of a plastic film as a base material. The outer shape of the carton (10) is a rectangular parallelepiped shape in the initial state of assembly, and has a top surface (16), a front body (12), a left body (13), a right body (14), and a rear. It consists of six surfaces, a side body (15) and a bottom surface (11).

In particular, since the carton (10) is a hexahedron in the initial state, the double container can correspond to the automatic packaging form of the wrap round method, and in addition, it is easy to stack in storage and handling. , Excellent in terms of transportation efficiency.

The inner bag (50) housed inside the carton (10) can store a liquid inside the carton (10), can be poured out by a spout (51), and for example, a spout (51) is screwed. When sealed with a cap, it can be opened and closed repeatedly.

Further, since the spout (51) is also stored in the carton (10) in the initial state, there is no risk of external contact or contamination, which is preferable in terms of hygiene.

The plastic film constituting the inner bag (50) 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, etc. can be used, and are appropriately selected according to the intended use.

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 the stretched polyamide film is laminated and used, it is possible to impart toughness against piercing and toughness against impact to the laminated body.

The bag making can be made by using a plastic film as a base material, for example, as a laminate in which a sealant layer is provided on the inner surface of the inner bag (50), and the sealant layers are overlapped with each other facing each other and sealed to make a bag. ..

Of the thermoplastic resins, polyolefin resins are generally used as the material of the sealant layer, and specifically, low-density polyethylene resin (LDPE), medium-density polyethylene resin (MDPE), and linear low-density polyethylene resin. (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.

Further, the plastic film can be laminated with another layer via an adhesive layer to form a laminated body. The layer structure, material structure, thickness, etc. of the laminate can be appropriately designed according to the required quality for the bag-in carton (100).

Further, for example, for the purpose of improving the storage stability of the contents, a gas barrier layer can be provided in the laminated body constituting the inner bag (50). For example, a metal foil such as aluminum, a metal vapor-deposited film, or a gas barrier film having a gas barrier layer provided on the surface of a plastic film can be used.

When a gas barrier layer is provided in the laminate, it is possible to prevent changes and deterioration of the contents due to environmental conditions, which is effective in improving the long-term storage stability of the contents.

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.

As shown in FIG. 2, since the carton is a hexahedron in the initial state, it is possible to support a wrap-round automatic packaging form even when the inner bag (50) is stored in the carton (10). ..

In addition to this, it is easy to stack in storage and handling, and it has a great merit in terms of transportation efficiency. Since the spout (51) is also stored in the carton (10) in the initial state, there is no risk of external contact or contamination, which is preferable in terms of hygiene.

In the present invention, in opening the spout (51) for pouring out the contents, the carton (10) is opened, and a slope is formed on the top surface (16) and the upper part of the anterior trunk (13). It is intended to provide a convenient carton (10) for a bag-in-carton by pulling out the spout (51) to the outside of the carton (10) and easily fixing the (10) to the carton. Is.

FIG. 3 is a schematic perspective view for explaining the appearance of the carton in the initial state in which the carton is assembled in one embodiment of the carton for the bag-in-carton according to the present invention.

As described above, the carton (10) for the bag-in-carton 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 (14). ), The rear body (15), and the bottom surface (11). The top surface (16) is a surface shaded in FIG.

The top surface (16) is formed by overlapping three layers of flaps connecting the four surfaces upward from the body portion, and in the state shown in FIG. 3, the outermost layer is the left side body portion (13). ), And two consecutive flaps from the right fuselage (14) are visible so as to be butted against each other in the center.

The two flaps are folded at right angles from the left and right to the inside, butted at the center of the top surface (16), and vertically cross the center of the top surface (16), the butt line (22). Is forming.

In addition, in the initial state assembled as described above, the two flaps on the left and right are on the top surface (1).
The portion of the two flaps on the left and right, which is provided on the outermost layer of 6) and serves as the knob portion (23) at the tip, is a portion that triggers the opening of the carton (10), and is the perforation (24) and the portion. It can be formed by cutting the perforation (41).

A continuous downward C-shaped portion is indicated by a cut line (21) and a cut line (31). The end point of this V-shape reaches the end of the top surface (16), that is, the left and right ridges of the top surface (16).

Further, under the outermost layer of the top surface (16), an intermediate layer of three layers is laminated and arranged, and the cut line (21) and the cut line of the outermost layer correspond to the outermost layer. Cut lines are provided that overlap the perforations (41), the outermost layer perforations (24), and the outermost layer perforations (41). However, this intermediate layer is invisible in FIG. 3 because it is below the outermost layer. This part will be described in FIG.

The middle layer of the top surface (16) is a flap that is continuous from the anterior fuselage (13) and is folded at a right angle toward the rear side. The knobs are provided with pre-cut lines in the same position as the two flaps.

Further, the flaps of the intermediate layer have the same positions as the two flaps of the outermost layer, and perforations are formed in the C-shaped portion so as to be torn.

Thus, on the top surface (16), with respect to the knob portion (23) and the C-shape, the perforations of the outermost layer and the cut line of the middle layer are intermediate with the cut line of the outermost layer (21). Since the perforations of the layers overlap at the same position, it is effective to more easily perform the work of tearing the perforations when opening the carton (10) described later.

This is because the perforations do not overlap each other in the upper and lower layers, and the force required for tearing is constant for one layer of the sewing machine, which makes it stable and easy.

That is, when opening the carton (10), the knob portion and the C-shape of the outermost layer and the intermediate layer of the top surface (16) are pinched at the same time, and the perforations are cut to open the top surface (16). It can be performed.

In the innermost layer of the top surface (16), a flap continuous from the rear fuselage (15) is folded at a right angle from the rear fuselage (15) toward the front side, and this flap has a tip of the flap. A concave notch is provided on the side, but this is also invisible in FIG. 3 because it is the innermost layer. A description will be added in FIG. 4 in this part as well.

Further, in the present invention, as can be seen from FIG. 3, perforations are arranged on the ridgeline portion of the hexahedron carton (10) with the perforations exposed on the ridgeline except for the three-layered top surface (16). Since this is not done, the risk of tearing due to perforations can be reduced even when an external force is applied during box making.

A fold ruled line (32) and a fold ruled line (34) are provided on the top surface, and a fold ruled line (B) is provided on the front body portion (12). These are the parts that form the slope when the carton (10) is opened to allow pouring of the contents.

After opening, when the slope is formed, the fold ruled line (43) forms a ridge line in FIG. 3, but the carton (10) is opened, the perforation is cut, and the slope is formed here. After it is done, it becomes flat.

Further, the front body portion (12) is provided with a circular perforation (20) near the ridgeline above the front body portion (12), and this portion can be cut out in a circular shape. This portion can be an opening for projecting and exposing the spout of the inner bag stored in the carton (10) when the carton (10) is opened.

As described above, the present invention is provided on the flaps constituting the top surface (16) when pouring out the contents, in addition to the merits obtained by the carton (10) being a hexahedron in the initial state. A slope can be formed in a carton (10) by easily tearing a perforated line or a cut line by hand, such as a knob portion.

Further, the spout (51) can be pulled out to the outside of the carton (10), and the carton (10) can be easily fixed to the slope. can do.

FIG. 4 is a planar development schematic view of a carton for explaining the details in one embodiment of a carton for a bag-in-carton according to the present invention.

The present invention relates to a carton (10) made of paper, which is an outer box of a double container. The double container is a container in the form called a bag-in-carton, which consists of a carton (10) which is an outer box and an inner bag made of a plastic film as a base material. It is possible to pour out from.

The carton (10) has a rectangular parallelepiped outer shape in the initial state in which the blanks (9) are assembled, and has a top surface (16), an anterior torso (12), a left torso (13), and a right torso (10). 14), the rear body (15), and the bottom surface (11) are assembled into a three-dimensional structure and formed from six surfaces. That is, FIG. 4 shows an embodiment of the blanks (9) before assembling the carton (10) as a schematic plan view.

In the planar development schematic diagram shown in FIG. 4, all the portions shown by the alternate long and short dash lines, including those not indicated by symbols, represent fold ruled lines for assembling the carton (10).

In the example shown in FIG. 4, the top surface (16) is a portion shown at the upper part in the blanks (9), and four flaps connecting upward from the body portion of the four surfaces are shown. After assembling the blanks (9), these are stacked in three layers to form the top surface (16).

The flaps connected to the four torso are continuous from the left torso (30), continuous from the right torso (33), continuous from the anterior torso (38), and from the rear torso. There are four consecutive flaps (36).

In the example shown in FIG. 4, the flap (30) continuous from the left side body is provided with a perforation (24), a cut line (21) continuous thereto, and a fold ruled line (32).

The boundary between the flap (30) continuous from the left torso and the left torso (13) becomes the left ridge of the top surface (16) after the carton (10) is assembled, but the front half of the torso is perforated (perforated). 19) The back half of the body is composed of fold ruled lines.

The flaps (33) continuous from the right side fuselage have the same configuration as the flaps (30) continuous from the left side body portion, but are symmetrically configured with the front side body portion (12) interposed therebetween.

That is, the flap (33) continuous from the right side body is provided with a perforation (41), a cut line (35) continuous to the flap (33), and a fold ruled line (34).

The boundary between the flap (33) continuous from the right torso and the right torso (14) becomes the right ridgeline of the top surface (16) after the carton (10) is assembled, but the front half of the torso is perforated. (27) The back half of the body is composed of fold ruled lines.

The flaps (30) continuous from the left fuselage and the flaps (33) continuous from the right fuselage face each other at the butt line (22) in the initial state in which the carton (10) shown in FIG. 3 is assembled. It forms the visible part of the top surface (16), that is, the outermost layer.

Therefore, the knob portion (23) composed of the flaps on both the left and right sides is arranged in the outermost layer, and both sides of the knob portion (23) can be separated at the perforations (24) and the perforations (41).

The knob portion (23) shown in FIG. 3 is laminated with the knob portion (42) of the intermediate layer on the top surface (16) of the assembled carton (10), and the knob portion (23) is separated at the time of opening. ) And the knob portion (42) are overlapped with each other and can be performed at the same time.

When the two flaps are butted on the top surface (16) by assembling the blanks (9), the front side is continuous with the two parallel lines of the perforations (24) and the perforations (41). A C-shape is formed toward the body (12), and this C-shaped portion is previously separated by a cut line (21) and a cut line (35). ..

To separate the knob (23) and the knob (42) for opening, pinch the overlap of the knob (23) and the knob (42) with your fingers, pull upward, and tear the perforation. Can be done by.

By this separation, the flap (30) continuous from the left trunk portion is divided, and the divided remaining portion remains continuous in the left trunk portion (13).

The same applies to the flap (33) continuous from the right side body portion, and the divided remaining portion remains continuous on the right side body portion (14). This state is shown in FIG.

A knob portion (42) is arranged at the center of the tip of the flap (38) continuous from the front body portion, and two parallel cut lines (39) are provided on both sides of the knob portion (42). It is in a state of being separated in advance.

Continuing with these two parallel cut lines (39), a downward C-shape is formed to be torn by the perforations (29). The two perforations (29) in the shape of a C reach the left and right ends of the flaps (38) that are continuous from the front torso. The tearing of the perforation (29) can be performed by pinching the knob portion (42) with fingers and pulling it upward to tear the perforation (29) at the time of opening.

The tearing of the knob portion should be performed in a state where the flap knob portion (23), which is the outermost layer of the top surface (16), and the flap knob portion (42), which is the intermediate layer, are laminated and overlapped. Can be done. The same applies to the C-shaped part that is continuous with the knob part.

This lamination can also be laminated by adhering the flap that becomes the outermost layer and the flap that becomes the intermediate layer, for example, via an adhesive or the like, in which case the simultaneous tearing of the two layers is more stable. Therefore, it is effective to do it more easily. The method of adhering this portion is not particularly limited, and when the sealant layer is provided on the surface of the blanks (9), the adhesive may be adhered by a seal.

Further, the flap (38) continuous from the front body portion is provided with a fold ruled line (A) in the width direction, and when the carton (10) is to be opened so that the contents can be poured out. A slope that descends diagonally from the top surface (16) to the front body (12) is formed between the fold ruled line (B) provided on the front body (12), and as a result, the carton (10) is formed. It can be a 7-sided body.

The fold ruled line (A) is a fold ruled line (32) of a flap (30) continuous from the left side body, a fold ruled line (34) of a flap (33) continuous from the right side body, and a top surface (34) in assembly. It is provided at the same position in 16) and overlaps. This part is the upper end of the diagonally descending slope.

Further, what is arranged in the innermost layer of the top surface (16) is a flap (36) continuous from the rear fuselage, and in the initial state when the carton (10) is assembled, from the rear side to the front side. It is folded at a right angle toward it.

The flap (36) continuous from the rear body portion is provided with a concave notch (18) on the side of the tip end. Further, the flap is provided with a fold ruled line in the width direction below the concave notch (18), and is between the flap (36) continuous from the rear body portion and the rear body portion (15). A slit (37) is formed in the center of the left and right sides of the ridgeline of the above.

The slit (37) is a narrow gap that has already been cut, like the cut line, and forms a slope (17) between the fold ruled line (A) and the fold ruled line (B) to form a carton (10). Is a heptahedron, the knob portion (42) and the laminated portion of the knob portion (23) are inserted into the slit (37) to fix the slope (17) and the top surface (16). can do.

A cutoutable circular perforation (20) is provided in the upper part of the front body portion (12), and this portion is located in the middle of the slope (17). By cutting out this circular perforation (20) of the slope (17), the spout (51) of the inner bag (50) housed inside the carton (10) is formed by the circular hole formed in the carton (10). It can be exposed by protruding from the slope (17) of the above surface to allow the liquid of the contents to be poured out.

As described above, a fold ruled line (B) is provided in the width direction under the circular perforation (20) of the front body portion (12). This fold ruled line (B) is a portion that becomes a boundary line between the front body portion (12) and the lower end of the slope (17) when the slope (17) is formed on the carton (10).

Perforations (25) are on the left side of the body (13) from both ends of the fold ruled line (B) toward the left side of the body (13) and the center of the ridge between the upper side of the right side of the body (14) and the flap. ), Perforations (26) are provided on the right side body (14), respectively.

Further, perforations (19) and perforations (27) are provided on the left and right sides of the ridgeline continuously from the central portion of the ridgeline toward the front body portion (12).

When the carton (10) is opened by tearing through these V-shaped perforations and an attempt is made to form a slope (17), the triangular overhang formed by the tearing in these perforations is the anterior trunk. It can be formed by projecting to the left and right of the portion (12) continuously.

Therefore, the left trunk portion (13) and the right trunk portion (14) have a defective portion of the overhanging portion of the triangle, and this portion forms the side surface of the slope (17) formed by opening.

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

As described above, in the carton (10) for the bag-in-carton according to the present invention, the spout (51) of the inner bag (50) is pulled out to the outside of the carton (10) and fixed in a state where the slope (17) is formed. And allows stable pouring of the liquid content.

A circular perforation (20) is located at the center of the slope (17) and under the fold ruled line (43), and a circular opening is formed in the middle of the slope (17) by cutting out the perforation (20). be able to. The fold ruled line (43) is a portion forming a ridgeline between the front body portion (12) and the top surface (16) in the initial state in which the carton (10) is assembled, but after the slope is formed. Is flat at a position in the middle.

In FIG. 5, inside this circular opening, there is a concave notch (18) of a flap (36) continuous from the rear body portion, which is partially visible. The spout (51) of the inner bag (50) housed inside the carton (10) has a groove at the root portion fixed by a concave notch (18) and a circular opening.

That is, the spout (51) can be pulled out from the slope (17) to the outside of the carton (10) to be exposed and fixed so that the liquid of the contents can be poured out.

The slope (17) is formed between the fold ruled line (A) and the fold ruled line (B), and at the stage when the opening is completed, the carton (10) adds the slope (17) from the original hexahedron. It has changed to a heptahedron.

Therefore, the area of the top surface (16) is reduced, and the ridgeline of the boundary between the original top surface (16) and the front body portion (12) is on the surface of the slope (17) with a fold ruled line (43). Is flattened and retains its traces.

In the initial hexahedron state, the outermost layer of the top surface (16) is formed by abutting the flaps continuous from the left side body (13) and the right side body (14), but perforations. In the state of the heptahedron in which the slope (17) is formed by cutting out or tearing, a divided part of the flap (30) continuous from the left side body and the flap (33) continuous from the right side body. ) Are abutted to form a butt line (22) to form the outermost layer of the top surface (16).

Further, the knob portion (42) is bent at a right angle along the fold ruled line (28) shown in FIG. 4 in a state of being laminated with the knob portion (23), and further inserted into the slit (37) to form the slope (17) and the slope (17). The top surface (16) is fixed.

Therefore, this fold ruled line (28) forms the central portion of the ridge line between the top surface (16) and the rear body portion (15) after the knob portion is inserted into the slit (37).

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

When taking out the liquid of the contents, in order to expose the spout (51) and form a slope (17) for fixing the spout (51), first, the outermost layer of the top surface (16) and the middle of the top surface (16) are formed. Pinch the knob part of the layer with your fingers and raise the two layers together, pull in the direction of the arrow (1) in the figure, cut the knob part and the perforation of the C-shaped part and open it.

That is, the flap of the top surface (16) composed of three layers is opened and reconstructed to form an opening and a slope (17) for pulling out the spout (51).

That is, a slope (17) is to be provided between the top surface (16) and the front body portion (12), whereby a rectangular parallelepiped consisting of six surfaces in the initial state in which the carton (10) is assembled. Can be transformed into a heptahedron including the surface of the slope (17).

First, while the knob portion (23) of the outermost layer of the top surface (16) and the knob portion (42) of the intermediate layer are overlapped, they are grasped by pinching them with their fingers and pulled in the direction of the arrow (1) in the figure. Tear the perforations and start opening the top surface (16) of the carton (10). At this time, as described above, the flap (30) continuous from the left torso and the flap (33) continuous from the right torso are divided, and the divided remaining portion (44) and the remaining portion (45) are the left and right torso. Each part remains continuous.

The flap (36) of the innermost layer, continuous from the posterior fuselage, can also be opened posteriorly in the direction of arrow (2). As a result, all four flaps continuous from the four-sided body are once separated from the top surface (16), and it becomes possible to shift to the reconstruction forming the slope (17).

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

Further, the upper part of the knob part and the front side body part (12) is drawn toward the front side in the direction of the arrow (3) in the figure, and the ridge line between the upper side of the left and right side body part and the flap from both ends of the fold rule line (B). A triangular overhang (46) is continuously formed on the right side of the anterior torso (12) by the perforation (26) leading to the above and the perforation (27) on the anterior torso side of this ridge.

Similarly, a triangular overhang is also formed on the left side of the anterior torso (12), but in FIG. 7, it is on the other side of the anterior torso (12) and the flap (38) and is invisible. .. These triangular overhangs are inserted and stored inside the carton (10) in the formation of the slope (17).

Next, the flap (36) continuous to the rear fuselage is pushed down in the direction of the arrow (4) to form the innermost layer of the top surface (16) and the subsequent slope (17). The flap (36) continuous to the rear body has a concave notch (18) on the tip side and a fold ruled line, and the inner bag (50) housed inside the carton (10). It can be fitted and fixed to the groove at the base of the spout (51).

FIG. 8 illustrates a state in which, in one embodiment of a carton for a bag-in-carton according to the present invention, the carton is a heptahedron with a slope added, the spout is pulled out and fixed, and the liquid of the contents can be poured out. It is a schematic view (partially see-through) for this purpose.

In the carton (10) according to the present invention, when the liquid of the contents is taken out, the spout (51) is pulled out to the outside of the carton (10) and fixed. In the example shown in FIG. 8, following the state shown in FIG. 7, the knob portion (42) of the flap continuous from the front fuselage portion, the portion formed in the shape of an arrow, and the top surface cut into the same shape. The part that becomes the slope (17) and the top surface (16) formed by the flaps (36) that are continuous from the rear fuselage together with the divided part of the flap of the middle layer of 5) Cover in the direction to form a slope (17) from the fold ruled line (A) to the fold ruled line (B).

At this time, the left and right triangular overhangs on the upper part of the front torso (12) are inserted into the inside of the carton (10) and stored, and the knobs are the flap (36) continuous from the back torso and the back torso. The ridgeline between the parts is inserted into the slit (37) in the direction of the arrow (6) and fixed, and the carton (10) is made into a heptahedron with this slope added from the hexahedron in the initial state. The liquid can be made ready to be poured out.

In this way, according to the present invention, it is possible to support a wrap-round type packaging form in a double container composed of a carton which is an outer box made of paper and an inner bag having a spout as a base material of a plastic film. In addition to this, in the initial state of the hexahedral carton, when opening the carton, a part of the carton was opened, the spout of the inner bag was pulled out to the outside of the paper container and fixed, and a slope was added. It is possible to provide a carton for a bag-in-carton that can be easily used as a facepiece.

1 ... Arrow 2 ... Arrow 3 ... Arrow 4 ... Arrow 5 ... Arrow 6 ... Arrow 9 ... Blanks 10 ... Carton 11 ... Bottom 12 ... Front side Body part 13 ... Left side body part 14 ... Right side body part 15 ... Rear side body part 16 ... Top surface 17 ... Slope 18 ... Concave notch 19 ... Perforation 20 ... Circular perforation 21 ... Cut line 22 ... Flap 23 ... Knob 24 ... Perforation 25 ... Perforation 26 ... Perforation 27 ... Perforation 28 ... Folded ruled line 29 ... Cut line 30 ... Flap 31 continuous from the right side body ... Folded ruled line 32 ... Folded ruled line 33 ... Flap 34 continuous from the right side body ... Folded ruled line 35 ... Cut line 36 ... Continuous flap 37 ... Slit 38 ... Continuous flap 39 ... Cut line 41 ... Cut Line 42 ... Knob 43 ... Folded ruled line 44 ... Remaining 45 ... Remaining 50 ... Inner bag 51 ... Spout 100 ... Bag in carton A ... Folded ruled line B ...・ Folded ruled line

Claims (1)

In a carton for a bag-in-carton consisting of a carton that is an outer box made of paper and an inner bag made of a plastic film as a base material.
Carton is in the initial state of assembly
Its outer shape is a rectangular parallelepiped consisting of six surfaces: the top surface, the front side body part, the left side body part, the right side body part, the rear side body part, and the bottom surface.
Inside it is equipped with a spout and can store an inner bag that can store liquid,
The spout is made of a plastic molding and has a groove at the base for fixing to the carton.
The top surface of the carton is formed by folding the flaps that connect upward from the body of the four sides at right angles and stacking them in three layers.
In the innermost layer of the top surface, flaps continuous from the rear torso are folded from the back to the front.
This flap has a concave notch on the side of the tip,
This flap has a fold ruled line in the width direction inside the notch,
In addition, a slit is formed in the center of the ridgeline between this flap and the rear fuselage.
In the middle layer of the top surface, flaps that are continuous from the front torso are folded toward the back.
This flap has two vertical cut lines that form the central knob at the tip, and two perforations that can be continuous and downward to form a C-shape. It is formed to be tearable and is
Further, this flap is provided with a fold ruled line (A) in the width direction between the ridge line between the front body and the V-shape.
On the outermost layer of the top surface, flaps continuous from the left side body and the right side body are folded inward from the left and right and abutted at the center, and are laminated on the intermediate layer.
These left and right flaps have perforations that overlap the cut lines and cut lines that overlap the perforations, which coincide with the portion formed in the shape of a C downward with the central part of the tip as a knob. It is provided,
At the top of the front torso, there is a circular perforation that can be cut out.
Below the circular perforations on the front body, a fold ruled line (B) is provided in the width direction.
There are two perforations from both ends of this fold ruled line (B) to the center of the left side trunk and the ridgeline between the upper side of the right side and the flap.
Furthermore, two perforations are provided on the ridgeline toward the anterior trunk, following the perforations leading to the central part.
When taking out the liquid of the contents,
The outermost layer of the carton's top surface and the middle layer of the top surface, the knob part is pinched with fingers and raised together, and the perforations of the knob part and the part formed in the shape of a C are cut and opened. ,
Further draw toward the front side, and the perforation from both ends of the fold line (B) to the ridge line between the upper side of the left and right side body and the flap, and the perforation of the ridge line toward the front side body are torn apart to form a triangle. Overhangs are formed continuously on the left and right sides of the front torso,
Subsequently, the cuttable circular perforations are cut to form an opening.
Next, the innermost flap, which is continuous from the posterior torso, is raised backwards.
Next, fold the left side of the outermost layer and the rest of the flaps that are continuous from the right side of the body, which were cut at the time of opening and the flaps that were torn at the perforations, at right angles from the left and right to the inside.
Next, fold the flap forward, continuing from the rear fuselage,
Furthermore, with the fold ruled line, a slope that goes down to the front is formed, and at the same time,
The concave notch on the tip side is fitted into the groove of the spout to fix it, and the spout is projected from the circular opening to expose it.
Next, cover the slope and the top surface together with two layers, a continuous knob part from the front body part, a part formed in a C shape, and a flap of the middle layer of the top surface cut out in the same shape. Then, a slope that descends from the fold ruled line (A) to the fold ruled line (B) is formed.
At this time, the overhang of the triangle on the upper part of the front fuselage is inserted inside the carton.
The knob is inserted into the slit of the ridge line between the flap continuous from the rear body and the rear body, and fixed.
The carton is a heptahedron with this slope added to the hexahedron in the initial state of assembly.
A carton for bag-in-cartons, characterized by the ability to pour out the liquid content.

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