JP2020172275A - carton - Google Patents

Abstract

To provide a carton capable of preventing the carton from being distorted during carton making and preventing poor adhesion between an inner flap and an outer flap.SOLUTION: A carton 1 includes a cylindrical body portion 2 including a pair of first main surface portions 3A, 3B and a pair of second main surface portions 4A, 4B disposed to face each other, a first inner flap 6A that links to one of the second main surface portion 4A at an end part of the body portion 2 and covers the end part of the body portion 2, a second inner flap 6B that links to another second main surface portion 4B at the end part of the body portion 2 and covers the end part of the body portion 2, and outer flaps 7A, 7B that link to the first main surface portion 3A, 3B at the end part of the body portion 2, and are overlapped and adhered to each of the inner flaps 6A, 6B from outer side. Each of the inner flaps 6A, 6B includes contact portions 61A, 61B capable of being in contact with each other at their tip end edges, and non-contact portions 62A, 62B that are not in contact with each other in an area AR1 from a position where the outer flaps 7A, 7B are adhered to a position where the tip ends of the outer flaps 7A, 7B overlap.SELECTED DRAWING: Figure 1

Description

The present invention relates to a carton.

Conventionally, in a carton, it is known that an axial end portion of a tubular body portion is closed by an inner flap and an outer flap (see, for example, Patent Document 1).

In the carton described in Patent Document 1, the axial end of the body composed of the bottom panel, the top panel, and the side panel is arranged on the side flap (inner flap) and the side flap from the outside. It is closed with the front and rear flaps (outer flaps).

Japanese Unexamined Patent Publication No. 2006-082853

However, in the conventional carton as described above, the inner flaps may overlap each other during box making to form a step. In this case, there is a problem that a gap is formed between the inner flap and the outer flap, resulting in poor adhesion between the inner flap and the outer flap.
On the other hand, if the inner flaps are shortened so that the inner flaps do not overlap with each other, the rigidity of the carton becomes low, and there arises a problem that the carton is distorted during box making.

An object of the present invention is to provide a carton capable of preventing poor adhesion between the inner flap and the outer flap while preventing the carton from being distorted during box making.

The carton of the present invention has a tubular body having a pair of first main surface portions arranged to face each other and a pair of second main surface portions arranged to face each other in a direction orthogonal to the facing direction of the pair of first main surface portions. A first inner flap that connects to one of the second main surface portions at the axial end of the body and covers the end of the body, and the other at the axial end of the body. A second inner flap that connects to the second main surface and covers the end of the body, and an axial end of the body that connects to the first main surface, the first inner flap and the first. 2 The inner flap is provided with an outer flap that is laminated and adhered to the inner flap from the outside, and the first inner flap and the second inner flap have a contact portion that can be brought into contact with each other at the tip edge thereof and a position where the outer flap is adhered. It is characterized in that it is provided with a non-contact portion that does not come into contact with each other in a region from to the position where the tips of the outer flaps overlap.

According to the present invention, since the first inner flap and the second inner flap are provided with contact portions that can contact each other at the tip edges thereof, the rigidity of the carton can be improved by the contact, and the carton can be manufactured at the time of box making. Can be prevented from being distorted.
Further, since the first inner flap and the second inner flap are provided with a non-contact portion over a region from the position where the outer flap is adhered to the tip position of the outer flap, the first inner flap and the second inner flap are provided in the region. It is possible to prevent the flaps from overlapping with each other. Therefore, it is possible to prevent a gap from being formed between the inner flap and the outer flap, so that it is possible to prevent poor adhesion between the inner flap and the outer flap.

The carton of the present invention has a tubular body having a pair of first main surface portions arranged to face each other and a pair of second main surface portions arranged to face each other in a direction orthogonal to the facing direction of the pair of first main surface portions. A first inner flap that connects to one of the second main surfaces at the axial end of the body and covers the end of the body, and the other at the axial end of the body. A second inner flap that connects to the second main surface and covers the end of the body, and an axial end of the body that connects to the first main surface, the first inner flap and the first. The first inner flap and the second inner flap are provided with an outer flap that is laminated and adhered to the inner flap from the outside, and the first inner flap and the second inner flap have a contact portion that can come into contact with each other at the tip edge thereof and the outer flap at the tip edge. It is characterized in that it is provided at an end portion on the base end side and is provided with a non-contact portion that does not come into contact with each other.

According to the present invention, since the first inner flap and the second inner flap are provided with contact portions that can contact each other at the tip edges thereof, the rigidity of the carton can be improved by the contact, and the carton can be manufactured at the time of box making. Can be prevented from being distorted.
Further, since the first inner flap and the second inner flap are provided with a non-contact portion at the end portion on the base end side of the outer flap at the tip edge thereof, the outer flap group which is easily contacted at the time of box making in the inner flap. It is possible to prevent the corners on the end side from coming into contact with each other, and it is possible to prevent the first inner flap and the second inner flap from overlapping. Therefore, it is possible to prevent a gap from being formed between the inner flap and the outer flap, so that it is possible to prevent poor adhesion between the inner flap and the outer flap.

In the carton of the present invention, at least one non-contact portion of the first inner flap and the second inner flap is formed so as to be gradually separated from the other non-contact portion toward the proximal end side of the outer flap. It is preferable to have.

According to the present invention, at least one non-contact portion of the first inner flap and the second inner flap is formed so as to be gradually separated from the other non-contact portion toward the proximal end side of the outer flap. After increasing the area of the flap on the tip side of the outer flap to ensure strength, it is possible to prevent the corners of the inner flap from coming into contact with each other on the base end side of the outer flap. Therefore, it is possible to more reliably prevent the carton from being distorted during box making, and to prevent poor adhesion between the inner flap and the outer flap.

In the carton of the present invention, the outer flap is sized to partially overlap the first inner flap and the second inner flap, and the contact portion is provided in a region where the outer flap does not overlap, and the non-contact portion is provided. The portion is preferably provided over a region where the outer flaps overlap from the base end to the tip end.

According to the present invention, the inner flap is provided with a contact portion in a region where the outer flaps do not overlap, and a non-contact portion is provided over a region where the outer flaps overlap from the base end to the tip end. That is, in the region where the outer flaps do not overlap, a contact portion is provided because there is no problem even if the inner flaps overlap each other, and in the region where the outer flaps overlap from the base end to the tip, the inner flaps do not overlap over the region. Is provided with a non-contact portion. Therefore, it is possible to prevent the carton from being distorted during box making and to more reliably prevent poor adhesion between the inner flap and the outer flap.

The perspective view of the carton which concerns on one Embodiment of this invention. The development view of the carton of FIG. The figure which shows the box-making process of the carton of FIG. A side view of the carton of FIG. A side view of a carton according to a modified example of the present invention. The side view of the carton which concerns on the modification of this invention. The side view of the carton which concerns on the modification of this invention. The side view of the carton which concerns on the modification of this invention. The side view of the carton which concerns on the modification of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
When indicating the direction in the following description, the state in which the carton 1 is placed as shown in FIG. 1 is used as a reference.

FIG. 1 is a perspective view showing a carton 1 according to the present embodiment. FIG. 2 is a developed view of the carton 1 (a plan view of a carton forming panel (also referred to as a carton blank) 1A).
In FIG. 1, the carton 1 is a so-called wrap-round type corrugated cardboard box in which the contained object FD (see FIG. 3) is wrapped by the carton forming panel 1A shown in FIG. 2 to form a box, and is formed in a rectangular parallelepiped. .. Examples of the FD to be contained include beverages contained in containers, foods such as margarine and cheese, and detergents contained in containers.

In FIGS. 1 and 2, the carton 1 has a body portion 2, a bottom surface portion 3A as a first main surface portion, an upper surface portion 3B as a first main surface portion, a first side surface portion 4A as one second main surface portion, and the other. The second side surface portion 4B, the torso portion 5, the first inner flap 6A, the second inner flap 6B, the first outer flap 7A, the second outer flap 7B, and the tear zone 8 are provided as the second main surface portion of the above. ..
The body portion 2 is composed of a bottom surface portion 3A, an upper surface portion 3B, a first side surface portion 4A, a second side surface portion 4B, and a body tension portion 5.

The bottom surface portion 3A is formed in a substantially rectangular shape in a plan view. The bottom surface portion 3A is connected to the first side surface portion 4A via the bending line 31A, to the second side surface portion 4B via the folding line 32A, and to the first outer flap 7A via the bending line 33A. There is.

The upper surface portion 3B is formed in a substantially rectangular shape in a plan view, and is arranged so as to face the bottom surface portion 3A. The upper surface portion 3B is connected to the second side surface portion 4B via the bending line 31B, is connected to the second outer flap 7B via the bending line 32B, and is connected to the body tension portion 5 via the bending line 33B. Has been done.

The first side surface portion 4A and the second side surface portion 4B are arranged so as to face each other in a direction orthogonal to the opposite direction of the bottom surface portion 3A and the top surface portion 3B. The first side surface portion 4A and the second side surface portion 4B are side surface portions on the long side side of the carton 1, the first side surface portion 4A is arranged on one long side side, and the second side surface portion is on the other long side side. 4B is placed.

The body tension portion 5 is a seal portion when forming the body portion 2, and is adhered to the first side surface portion 4A from the outside by an adhesive AD such as a hot melt adhesive.

The first inner flap 6A, the second inner flap 6B, the first outer flap 7A, and the second outer flap 7B are side surface portions on the short side side of the carton 1, and the outer flaps 7A and 7B are the first inner flap 6A. And overlapped with the second inner flap 6B.

The first inner flap 6A is connected to the first side surface portion 4A via the bending line 41A at both ends of the body portion 2 in the axial direction, and covers the end portion of the body portion 2. The first inner flap 6A includes a contact portion 61A and a non-contact portion 62A.
The contact portion 61A is a tip portion of the first inner flap 6A, and is configured so that the tip edge thereof contacts the tip edge of the second inner flap 6B.
The non-contact portion 62A has a shape in which the tip edge of the first inner flap 6A is cut out, from the position where the first outer flap 7A is adhered by the adhesive AD to the position where the tip of the first outer flap 7A overlaps. Region AR1 is configured so that it does not come into contact with the second inner flap 6B. In the case of the present embodiment, the non-contact portion 62A is provided over the region AR2 where the base end to the tip of the first outer flap 7A overlap, and extends to a partial region of the tear zone 8.

The second inner flap 6B is connected to the second side surface portion 4B via the bending line 41B at the axial end portion of the body portion 2 and covers the end portion of the body portion 2. Since the second inner flap 6B has the same configuration as the first inner flap 6A, the symbol A at the end of the symbol of the first inner flap 6A is replaced with B for illustration, and the description thereof will be omitted.

The first outer flap 7A is connected to the bottom surface portion 3A at the axial end of the body portion 2, and is laminated and adhered to the first inner flap 6A and the second inner flap 6B from the outside. The first outer flap 7A has a size that partially overlaps the first inner flap 6A and the second inner flap 6B, and is formed so that the tip is located on the bottom surface 3A side of the first cutting line 81 of the tear zone 8. Has been done.

The second outer flap 7B is connected to the upper surface portion 3B at the axial end of the body portion 2, and is laminated and adhered to the first inner flap 6A and the second inner flap 6B from the outside. The second outer flap 7B has a size that partially overlaps the first inner flap 6A and the second inner flap 6B, and is formed so that the tip is located on the upper surface portion 3B side of the second cutting line 82 of the tear zone 8. Has been done.

The tear zone 8 is provided over the first side surface portion 4A and the first inner flap 6A, and is provided over the second side surface portion 4B and the second inner flap 6B. The tear zone 8 is formed by a first cutting line 81 provided on the bottom surface portion 3A side and a second cutting line 82 provided on the top surface portion 3B side.

When the above carton 1 is manufactured, as shown in FIG. 3, the first side surface portion 4A and the second side surface portion 4B face each other with the contained object FD arranged on the bottom surface portion 3A. While bending and starting up, the upper surface portion 3B, the torso portion 5, the inner flaps 6A and 6B, and the outer flaps 7A and 7B are bent inward. Then, the outer flaps 7A and 7B are laminated and adhered to the first inner flap 6A and the second inner flap 6B from the outside, and the body tension portion 5 is laminated and adhered to the first side surface portion 4A from the outside.

Here, as shown by the alternate long and short dash line in FIG. 3, when the non-contact portions 62A and 62B are not provided on the first inner flap 6A and the second inner flap 6B, the first side surface portion 4A and the second side surface portion 4B If the bending timings of the first inner flap 6A and the second inner flap 6B do not match, the corners on the bottom surface 3A side of the inner flaps 6A and 6B may interfere with each other, or the first inner flap 6A and the second inner flap 6A and the second inner flap may interfere with each other. The flap 6B may overlap.

On the other hand, in the carton 1, as shown in FIG. 3, since the first inner flaps 6A and the second inner flaps 6B are provided with non-contact portions 62A and 62B, the bottom surface portions 3A of the inner flaps 6A and 6B are provided. It is possible to prevent the corners on the sides from interfering with each other and the first inner flap 6A and the second inner flap 6B from overlapping each other. Therefore, as shown in FIG. 4, the contact portions 61A and 61B can be brought into contact with each other at the tip edges of the first inner flap 6A and the second inner flap 6B without overlapping each other.

According to the above-described embodiment, since the first inner flap 6A and the second inner flap 6B are provided with contact portions 61A and 61B that can come into contact with each other at the tip edges thereof, the rigidity of the carton 1 is increased by the contact. It can be improved and the carton 1 can be prevented from being distorted during box making.
Further, since the first inner flap 6A and the second inner flap 6B are provided with non-contact portions 62A and 62B over the region AR1 from the position where the first outer flap 7A is adhered to the tip position of the first outer flap 7A. , It is possible to prevent the first inner flap 6A and the second inner flap 6B from overlapping in the region. Therefore, it is possible to prevent a gap from being formed between the inner flaps 6A and 6B and the outer flaps 7A and 7B, so that it is possible to prevent poor adhesion between the inner flaps 6A and 6B and the outer flaps 7A and 7B. ..

Further, since the first inner flap 6A and the second inner flap 6B are provided with non-contact portions 62A and 62B at the distal end side of the first outer flap 7A at the tip edge thereof, the inner flap 6A, In 6B, it is possible to prevent the corners on the base end side of the outer flaps, which are easily contacted during box making, from coming into contact with each other, and it is possible to more reliably prevent the first inner flap 6A and the second inner flap 6B from overlapping.

Further, each of the inner flaps 6A and 6B is provided with contact portions 61A and 61B in a region where the first outer flap 7A does not overlap, and a non-contact portion 62A over a region AR2 where the first outer flap 7A overlaps from the base end to the tip end. , 62B is provided. That is, in the region where the first outer flaps 7A do not overlap, the contact portions 61A and 61B are provided because there is no problem even if the inner flaps 6A and 6B overlap each other, and the region where the first outer flaps 7A overlap from the base end to the tip end. In AR2, non-contact portions 62A and 62B are provided so that the inner flaps 6A and 6B do not overlap with each other over the region AR2. Therefore, while preventing the carton 1 from being distorted during box making, it is possible to more reliably prevent poor adhesion between the inner flaps 6A and 6B and the outer flaps 7A and 7B.

[Modification example]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention.
For example, the carton 1 is not limited to the wrap-round type, and any type may be adopted, or may be formed of paper other than corrugated cardboard. Further, although the carton 1 is suitable for accommodating food, detergent and the like, it may accommodate other FDs to be contained.
The carton 1 is not limited to a rectangular parallelepiped shape, and may be, for example, a cube shape, or a prismatic shape in which the bottom surface portion 3A and the top surface portion 3B are a quadrangle such as a parallelogram or a rhombus, or a polygon having a pentagon or more. It may be a thing.
The body portion 2 may be, for example, a side view triangle, a quadrangle other than a rectangle such as a square or a rhombus, or a tubular shape having a polygon of pentagons or more.

The folding lines 32B, 33A, and 33B may be cut lines in which a plurality of linear cuts are intermittently formed in a row.
The folding lines 31A to 33A, 31B to 33B, 41A, and 41B may be composed of, for example, altered portions obtained by partially altering the bending lines 31A to 33A, 31B to 33B, 41A, and 41B. The folding lines 31A to 33A, 31B to 33B, 41A, and 41B may be formed of a thin-walled portion. In this case, the altered portion and the thin-walled portion may be provided intermittently or may be provided in a continuous linear shape.

In the first inner flap 6A and the second inner flap 6B, as shown in FIG. 5, the non-contact portions 62A and 62B do not have to extend to a part of the tear zone 8, for example, the tear zone 8. It may be extended to the first cutting line 81 of. In this case, it is preferable that at least one of the first inner flap 6A and the second inner flap 6B is provided with notches 63A and 63B for facilitating the gripping of the tear zone 8 as shown in FIG. ..

As shown in FIGS. 6 and 7, the non-contact portions 62A and 62B may be formed so as to be gradually separated from each other toward the proximal end side of the first outer flap 7A. As a result, the areas of the inner flaps 6A and 6B are increased on the tip side of the first outer flap 7A to ensure strength, and then the corners of the inner flaps 6A and 6B are located on the base end side of the first outer flap 7A. Can be prevented from coming into contact with each other. Therefore, it is possible to more reliably prevent the carton 1 from being distorted during box making, and to prevent poor adhesion between the inner flaps 6A and 6B and the outer flaps 7A and 7B.

As shown by the solid line and the alternate long and short dash line in FIGS. 5 to 7, the non-contact portions 62A and 62B have a region AR2 in which the first outer flap 7A overlaps and a region AR3 in which the base end to the tip of the second outer flap 7B overlap. It may be provided only in the region AR3 where the second outer flap 7B overlaps. If the non-contact portions 62A and 62B are provided in the region AR2 where the first outer flap 7A overlaps and the region AR3 where the second outer flap 7B overlaps, the overlap between the first inner flap 6A and the second inner flap 6B is more reliable. Can be prevented.

In the first inner flap 6A and the second inner flap 6B, as shown in FIGS. 7 and 8, contact portions 61A and 61B may be provided in the region AR2 where the first outer flap 7A overlaps. For example, as shown in FIG. 7, contact portions 61A and 61B are provided at the distal end of the first outer flap 7A at the distal edges of the inner flaps 6A and 6B, and are provided at the distal edges of the inner flaps 6A and 6B. Non-contact portions 62A and 62B may be provided at the proximal end side of the first outer flap 7A. Further, as shown in FIG. 8, contact portions 61A and 61B are provided at the distal ends of the first outer flaps 7A at the distal edges of the inner flaps 6A and 6B, and the distal edges of the inner flaps 6A and 6B are provided. Non-contact portions 62A and 62B may be provided at the distal end portion of the first outer flap 7A.

As shown in FIG. 8, when the contact portions 61A and 61B are provided at the distal end portion of the first outer flap 7A on the proximal end side, as shown by the solid line in FIG. 8, the non-contact portions 62A and 62B are at least It is provided over the region AR1 from the position where the first outer flap 7A is adhered to the position where the tips of the first outer flap 7A overlap, preferably at least the first outer flap as shown by the solid line and the alternate long and short dash line in FIG. It is provided over the region AR4 from the position where the 7A is adhered to the position where the second outer flap 7B is adhered.

As shown in FIG. 9, the non-contact portions 62A and 62B may have a shape in which only one of them is notched and the other may not be cut out.
The shapes of the non-contact portions 62A and 62B are not particularly limited as long as they do not contact each other, and may be, for example, a shape cut out in a semicircular shape, an arc shape, a curved line shape, or a curved curve shape.

The first inner flap 6A may be connected to the bottom surface portion 3A as the second main surface portion, and the second inner flap 6B may be connected to the upper surface portion 3B as the second main surface portion. In this case, the first outer flap 7A is connected to the first side surface portion 4A as the first main surface portion, and the second outer flap 7B is connected to the second side surface portion 4B as the first main surface portion. ..

One of the first outer flap 7A and the second outer flap 7B may not be provided, and the other may be sized so as to overlap substantially the entire surface of the first inner flap 6A and the second inner flap 6B.

The tear zone 8 may be provided only on one of the first side surface portion 4A and the first inner flap 6A and the second side surface portion 4B and the second inner flap 6B.
Further, instead of the tear zone 8, a cut tape provided inside the side surface portions 4A and 4B and the inner flaps 6A and 6B may be used.
The first cutting line 81 and the second cutting line 82 may have, for example, a perforated shape, a zipper shape in which the end of each cut is inclined toward the tear zone 8, or a side surface portion 4A. It may be composed of an altered portion in which 4B and the inner flaps 6A and 6B are partially altered, or a thin portion in which the side surface portions 4A and 4B and the inner flaps 6A and 6B are thinned.

1 ... Carton, 2 ... Body, 3A ... Bottom (first main surface), 3B ... Top surface (first main surface), 4A ... First side surface (one second main surface), 4B ... Second Side surface (the other second main surface), 6A ... 1st inner flap, 6B ... 2nd inner flap, 7A ... 1st outer flap (outer flap), 7B ... 2nd outer flap (outer flap), 61A, 61B ... contact part, 62A, 62B ... non-contact part.

Claims (4)

A tubular body portion having a pair of first main surface portions arranged to face each other and a pair of second main surface portions arranged to face each other in a direction orthogonal to the facing direction of the pair of first main surface portions.
A first inner flap that connects to one second main surface at the axial end of the body and covers the end of the body.
A second inner flap that connects to the other second main surface at the axial end of the torso and covers the end of the torso.
It is provided with an outer flap that is connected to the first main surface portion at the axial end of the body portion and is laminated and adhered to the first inner flap and the second inner flap from the outside.
The first inner flap and the second inner flap do not contact each other in a contact portion that can contact each other at the tip edge thereof and in a region from a position where the outer flap is adhered to a position where the tip of the outer flap overlaps. A carton characterized by having a contact. A tubular body portion having a pair of first main surface portions arranged to face each other and a pair of second main surface portions arranged to face each other in a direction orthogonal to the facing direction of the pair of first main surface portions.
A first inner flap that connects to one second main surface at the axial end of the body and covers the end of the body.
A second inner flap that connects to the other second main surface at the axial end of the torso and covers the end of the torso.
It is provided with an outer flap that is connected to the first main surface portion at the axial end of the body portion and is laminated and adhered to the first inner flap and the second inner flap from the outside.
The first inner flap and the second inner flap are provided at a contact portion capable of contacting each other at the tip edge thereof and a non-contact portion provided at the end portion of the tip edge on the base end side of the outer flap and not contacting each other. A carton characterized by being equipped with. At least one non-contact portion of the first inner flap and the second inner flap is formed so as to be gradually separated from the other non-contact portion toward the proximal end side of the outer flap. The carton according to claim 1 or 2. The outer flap is sized to partially overlap the first inner flap and the second inner flap.
The contact portion is provided in a region where the outer flaps do not overlap.
The carton according to any one of claims 1 to 3, wherein the non-contact portion is provided over an overlapping region from the base end to the tip end of the outer flap.

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