JP7542255B2 - Packaging container and deployment body - Google Patents

Description

This specification discloses a cutting structure for cutting packaging containers.

Patent Document 1 discloses a packaging box with multiple cuts intermittently cut along the cutting direction. The cuts have a first cut line extending in the cutting direction, and a second cut line extending from the upstream end of the first cut line in the cutting direction at a right angle to the first cut line. The first cut lines of the multiple cuts are aligned in a straight line in the cutting direction.

JP 2018-90292 A

In a configuration in which multiple first inlet lines extending in the cutting direction are arranged on a straight line in the cutting direction, the first inlet lines can be cut more easily by reducing the distance between adjacent first inlet lines, improving cuttability. However, the first inlet lines tend to bend on the straight line along which they are arranged, reducing the rigidity of the packaging container. Conversely, if the distance between adjacent first inlet lines is large, the packaging container may not be cut at the intended cutting position, and the actual cutting position may deviate from the intended cutting position.

This specification provides a technology that prevents adjacent cuts from being positioned close to each other on a straight line while suppressing a decrease in cutting ability.

This specification discloses a cutting structure for a packaging container. The cutting structure includes a first cut group including a plurality of first cuts arranged along a cutting direction on the packaging container, and each of the plurality of first cuts includes a first cut portion extending in the cutting direction, a second cut portion disposed in front of the first cut portion in the cutting direction, the second cut portion being offset from an extension line of the first cut portion and extending in the cutting direction, a third cut portion disposed between the first cut portion and the second cut portion and connected to each of the first cut portion and the second cut portion, and a fourth cut portion connected to a rear end of the first cut portion in the cutting direction and inclined with respect to the first cut portion.

For example, in a configuration in which multiple notches are aligned along the cutting direction and are aligned in a straight line in the cutting direction, if two adjacent notches are placed close to each other in consideration of cuttability, the notches will be easily bent along the straight line.

On the other hand, in the above-mentioned cutting structure, each of the multiple first cuts includes a first cut portion extending in the cutting direction and a second cut portion disposed at a position offset from the extension line of the first cut portion. With this configuration, in two first cuts adjacent to each other in the cutting direction, the first cut portion located at the rear of the first cut portion on the front side of the cutting direction and the second cut portion located at the front of the first cut portion on the rear side of the cutting direction can be prevented from being disposed on a straight line. As a result, even if the gap between two first cuts adjacent to each other in the cutting direction is made small, it is possible to prevent the first cut portions from being disposed close to each other and the second cut portions from being disposed close to each other. With this configuration, compared to a configuration in which multiple cuts are arranged in a straight line in the cutting direction, it is possible to prevent the cut portions on the same straight line from being disposed close to each other, while allowing the multiple first cuts to be closer to each other in order to suppress a decrease in cutting performance.

In two first cuts adjacent to each other in the cutting direction, the front end of the second cut of the first cut located at the rear of the cutting direction may be located rearward of the rear end of the first cut of the first cut located at the front of the cutting direction. With this configuration, the distance between two first cuts adjacent to each other in the cutting direction can be increased. This makes it possible to prevent multiple first cuts from being placed too close together. As a result, it is possible to avoid placing the first cuts and the second cuts that are aligned on the same line close to each other in two adjacent first cuts. This makes it possible to suppress a decrease in the rigidity of the packaging container.

The fourth cut may be disposed perpendicular to the cutting direction. The length of the fourth cut may be longer than the third cut. In this configuration, when the cutting structure is cut along the cutting direction, the part of the packaging container located rearward of the first cut at the rear end of the first cut can be easily bent along the fourth cut. Therefore, when the part of the packaging container located on the fourth cut side is pulled to cut the packaging container along the cutting structure, the gripping part bends away from the packaging container in the pulling direction, making it easier to grip.

The first cut portion and the second cut portion may be parallel to each other. This configuration can prevent the cutting structure from cutting in a direction other than the intended cutting direction.

The cutting device may further include a second group of cuts that is spaced apart from the first group of cuts and includes a plurality of second cuts aligned along the cutting direction. With this configuration, the packaging container can be cut by gripping a portion of the packaging container located between the first group of cuts and the second group of cuts and cutting the first group of cuts and the second group of cuts.

The second cut portion may be disposed closer to the second cut group than the first cut portion.

The fourth cut portion may extend toward the second cut group. With this configuration, when the portion of the packaging container located between the first cut group and the second cut group is pulled to cut the first cut group and the second cut group, the gripped portion bends away from the packaging container in the pulling direction, making it easier to grip.

The first cut may have a length equal to or greater than the second cut.

The second cut may be disposed at a corner of the packaging container. In a configuration in which a corner is formed by bending a flat plate, tension is applied to the outer surface of the corner depending on the thickness of the flat plate. When discontinuous cuts are arranged at the corner, tension is applied to the portion located between adjacent cuts, but tension is not applied to the cuts, and the cuts open as the corner is bent. As a result, a large tension is applied to the portion located between adjacent cuts and close to the cuts.

In the first group of cuts, the fourth cut portion can prevent the first cuts from opening to correspond to the corners at the rear ends of the first cuts, thereby preventing the portion between adjacent first cuts from being pulled. At the front ends of the first cuts, the second cut portion extends along the cutting direction, preventing the cutting ability of the cutting structure from decreasing.

The first cutout and the second cutout may be arranged so that a portion of the packaging container located on the second cutout side of the first cutout in a direction perpendicular to the cutting direction overlaps with an edge of the side plate of the packaging container that constitutes the corner. According to this configuration, in the portion that constitutes the corner of the packaging container, a portion of the packaging container located on the second cutout side of the first cutout in a direction perpendicular to the cutting direction (hereinafter referred to as the "overlapping portion") overlaps with an edge of the side plate (hereinafter referred to as the "overlapping side plate"), so that when a load is applied to the side plate on which the cutting structure is arranged, the overlapping portion is supported by the overlapping side plate, thereby preventing deformation of the overlapping portion. This makes it possible to prevent the packaging container from being deformed by the load.

The distance between the first cut portion and the second cut portion in the direction perpendicular to the cutting direction may be less than or equal to the plate thickness of the packaging container.

A packaging container having any of the above cutting structures, and a deployment body for producing a packaging container, are also novel and useful.

FIG. 1 is a perspective view of a packaging container according to a first embodiment. 1 shows an unfolded body of the packaging container of the first embodiment. FIG. 2 is an enlarged view of the cutting structure of the first embodiment. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. FIG. 4 is a perspective view showing a state in the middle of cutting the cutting structure of the first embodiment. FIG. 11 is a perspective view of a packaging container according to a second embodiment. FIG. 7 is an enlarged view of a cutting structure according to a second embodiment. FIG. 11 is a perspective view of a packaging container according to a third embodiment. FIG. 13 is an enlarged view of a cutting structure according to a third embodiment. FIG. 13 is a perspective view of a packaging container according to a fourth embodiment. FIG. 13 is a perspective view of a packaging container according to a fifth embodiment. FIG. 13 is a perspective view of a packaging container according to a sixth embodiment. 13 shows an unfolded packaging container of the sixth embodiment. 13 shows an expanded view of a modified packaging container.

First Embodiment
The packaging container 10 shown in Fig. 1 and Fig. 2 is used for delivery. The use of the packaging container 10 is not limited to delivery, and it may be used for storage, gift giving, etc. Fig. 1 shows the up-down direction, front-rear direction, and left-right direction used throughout this embodiment. These up-down direction, front-rear direction, and left-right directions are used to facilitate the explanation of this embodiment, and do not specify the direction in which the packaging container 10 is used. The packaging container 10 has a rectangular parallelepiped shape. In a modified example, the packaging container 10 may have another shape, such as a cube shape.

(Configuration of the deployment body)
As shown in FIG. 2, the packaging container 10 is assembled by folding a single piece of corrugated cardboard-made deployable body BL along the fold lines. The corrugated cardboard has a thickness of 1.0 mm. The thickness and material of the deployable body BL are not particularly limited. In the packaging container 10, the peaks of the corrugated cardboard core are arranged vertically in the left-right direction. In FIG. 2, the fold lines are drawn with thin dashed lines. The fold lines have grooves formed therein to facilitate folding. In a modified example, the fold lines may not have grooves or the like, as in other parts. The packaging container 10 includes a cover plate 12, a bottom plate 20, four side plates 30, 32, 34, 36, three upper end flaps 42, 44, 46, and four side plate flaps 48.

The bottom plate 20 has a rectangular flat plate. Side plates 30, 32, 34, 36 are connected to each of the four edges of the bottom plate 20 via bends. Each of the side plates 30, 32, 34, 36 has a rectangular flat plate that forms one face of a rectangular parallelepiped. Each of the side plates 30, 32, 34, 36 is bent at a right angle to the bottom plate 20.

A side panel flap 48 is connected to each of the front and rear edges of the side panels 32, 36 that face each other in the left-right direction. Each of the side panel flaps 48 connected to the side panel 32 is folded relative to the side panel 32 and placed in the packaging container 10. Similarly, each of the side panel flaps 48 connected to the side panel 36 is folded relative to the side panel 36 and placed in the packaging container 10.

A top flap 42 is connected to the edge of the side plate 32 opposite the bottom plate 20. The top flap 42 is folded relative to the side plate 32 and placed inside the packaging container 10. A top flap 46 is connected to the edge of the side plate 36 opposite the bottom plate 20. The top flap 46 is folded relative to the side plate 36 and placed inside the packaging container 10.

The top flap 44 is connected to the edge of the side panel 34 opposite the bottom panel 20. The top flap 44 is folded relative to the side panel 34 after the top flaps 42, 46 are folded relative to the side panels 32, 36. An insertion piece 44b is arranged on each of the left and right ends of the top flap 44. The insertion piece 44b arranged on the side panel 32 side is inserted into the insertion hole 42b arranged at the corner of the boundary between the side panel 32 and the top flap 42. The insertion piece 44b arranged on the side panel 36 side is inserted into the insertion hole 46b arranged at the corner of the boundary between the side panel 36 and the top flap 46. This maintains the top flaps 42, 44, 46 folded relative to the side panels 32, 34, 36.

The lid plate 12 is connected to the upper edge of the side plate 30 via a fold line. The lid plate 12 is disposed opposite the bottom plate 20. The lid plate 12 has a generally rectangular flat plate shape that closes the opening of the packaging container 10 defined by the side plates 30, 32, 34, and 36.

The cover plate 12 has insertion pieces 14, 16, and 18. The insertion piece 14 is located at the center in the left-right direction on the edge of the cover plate 12 opposite the side plate 30. The insertion piece 14 is inserted into the insertion opening 44a located at the corner of the boundary between the side plate 34 and the upper end flap 44. The insertion piece 16 is located on the right edge of the cover plate 12. The insertion piece 16 is inserted into the insertion opening 42a located at the corner of the boundary between the side plate 32 and the upper end flap 42. The insertion piece 18 is located on the left edge of the cover plate 12. The insertion piece 18 is inserted into the insertion opening 46a located at the corner of the boundary between the side plate 36 and the upper end flap 46. This maintains the cover plate 12 in a state in which it closes the opening of the packaging container 10 defined by the side plates 30, 32, 34, and 36.

When the insertion piece 14 is inserted into the insertion opening 44a, both left and right ends of the insertion piece 14 engage with the upper end flap 44, thereby preventing the cover plate 12 from being easily opened.

(Configuration of cutting structure 50)
A cutting structure 50 is disposed on the cover plate 12. The cutting structure 50 is disposed at an end of the cover plate 12 on the side plate 30 side. The cutting structure 50 is disposed over the entire length of the cover plate 12 in the left-right direction. As shown in FIG 3, the cutting structure 50 includes a pair of notch groups 52, 54.

The cut group 52 includes a plurality of cuts 60. The cuts 60 are arranged along the cutting direction CD at intervals. The cutting direction CD is parallel to the left-right direction. In the following, the front-rear direction is defined along the cutting direction CD. The front-rear direction is parallel to the left-right direction of the packaging container 10, with the right corresponding to the rear and the left corresponding to the front. The cuts 60 are arranged at the corners of the boundaries between the cover plate 12 and the side plate 30. The cuts 60 penetrate the corners of the boundaries between the cover plate 12 and the side plate 30 over their entire length. In the unfolded body BL, the cuts 60 are closed by the cover plate 12 and the side plate 30 without any gaps. The cuts 60 include four cuts 62, 64, 66, and 68. The cuts 62 are arranged parallel to the cutting direction CD. The cuts 64 are arranged parallel to the cutting direction CD. The cutout portion 64 is positioned offset toward the cutout group 54 side from the cutout portion 62. The length L2 of the cutout portion 64 is equal to or less than the length L1 of the cutout portion 62. The length L3 between the cutout portions 62 and 64 is equal to or less than the plate thickness of the deployable body BL. The length L3 may be 50 to 100% of the thickness of the deployable body BL. In the cutting direction CD, the rear end of the cutout portion 64 is located forward of the front end of the cutout portion 62.

The cutout portion 62 and the cutout portion 64 are connected by the cutout portion 66. The cutout portion 66 is connected to the front end of the cutout portion 62 and the rear end of the cutout portion 64. The cutout portion 66 is disposed at an angle with respect to the cutting direction CD.

The rear end of the notch 62 is connected to the notch 68. The notch 68 is disposed perpendicular to the notch 62. The notch 68 extends from the rear end of the notch 62 toward the group of notches 54.

In the packaging container 10, the boundary between the cover plate 12 and the side plate 30 is bent along a straight fold line along which the cuts 64 are aligned, forming a corner. At the corner of the boundary between the cover plate 12 and the side plate 30, an overlapping portion 12a of the cover plate 12 is located in a direction perpendicular to the cutting direction CD from the cuts 62, and is disposed between the cuts 62 and 64 in the direction perpendicular to the cutting direction CD, and protrudes from the edge 12b of the cover plate 12 at the portion where the cuts 64 are disposed. As a result, as shown in FIG. 4, the overlapping portion 12a is disposed above the upper edge of the side plate 30. The size of the overlapping portion 12a varies depending on the length L3 between the cuts 62 and 64.

The cut group 54 includes a plurality of cuts 70. The cuts 70 are spaced apart from one another and aligned along the cutting direction CD. The cuts 70 penetrate the cover plate 12 over their entire length. The cuts 70 are closed by the cover plate 12 without any gaps. The cuts 70 include cut portions 72 and 74. The cut portion 72 is arranged parallel to the cutting direction CD. The cut portion 74 is connected to the rear end of the cut portion 72 in the cutting direction CD. The cut portion 74 is arranged at an angle toward the cut group 52 relative to the cut portion 72. In the cutting direction CD, the front ends of the cuts 70 are aligned with the position PS of the front ends of the cuts 60.

(Cutting method of cutting structure 50)
As shown in FIG. 5, the user can cut the cutting structure 50 by pulling the gripping portion 80 located between the groups of incisions 52, 54 forward in the cutting direction CD (i.e., from right to left). Each time the cutting position reaches the incision 68 of the incision 60, the gripping portion 80 is bent in the pulling direction starting from the incision 68. This allows the gripping portion 80 to be deformed along the pulling direction of the gripping portion 80. The length L4 of the incision 68 is greater than the length of the incision 66. By lengthening the incision 68, the gripping portion 80 can be easily bent. As a result, the user can cut the cutting structure 50 without adjusting the pulling direction.

At the front end of the cut 60, a cut portion 64 that is parallel to the cut direction CD is disposed. Therefore, when the cutting position reaches the cut portion 64, the cut portion 64 opens, and the connecting portion 69 (see FIG. 3) between the cut 60 and the cut 60 located in front of the cut direction CD is torn and cut. This allows the cut 60 to be cut smoothly.

(effect)
In the cut group 52, a plurality of cuts 60 are arranged along the cutting direction CD. Each of the plurality of cuts 60 includes a cut portion 62 extending in the cutting direction CD and a cut portion 64 arranged at a position shifted from an extension line of the cut portion 62. In two cuts 60 adjacent to each other in the cutting direction CD, the cut portion 62 located at the rear end of the cut portion 60 on the front side in the cutting direction CD and the cut portion 64 located at the front end of the cut portion 60 on the rear side in the cutting direction CD can be prevented from being arranged on a straight line. This makes it possible to avoid a state in which the cut portions 62 arranged on the same straight line are arranged close to each other and a state in which the cut portions 64 arranged on the same straight line are arranged close to each other, even if the connecting portion 69 of the gap between the two cuts 60 adjacent to each other in the cutting direction CD is made small. This makes it possible to avoid a state in which the cut portions 62 are arranged close to each other and a state in which the cut portions 64 are arranged close to each other while suppressing a decrease in cutting performance.

In the cut group 52, the front end of the cut portion 64 of the cut 60 located at the rear of the cut direction CD in the two adjacent cuts 60 in the cut direction CD is located rearward of the rear end of the cut portion 62 of the cut 60 located at the front of the cut direction CD, across the connecting portion 69. This allows the distance between the two adjacent cuts 60 to be increased. This makes it possible to avoid arranging the cut portions 62 and the cut portions 64 of the two adjacent cuts 60 in close proximity to each other, which are aligned on the same line. This makes it possible to suppress a decrease in the rigidity of the packaging container 10. The cut portion 64 located at the front end of the cut 60 is arranged parallel to the cut direction CD, making it easier to cut the connecting portion 69 located between the two adjacent cuts 60, so that the cutting structure 50 can be properly cut even if a gap is placed between the two adjacent cuts 60.

The notches 62 and 64 are arranged parallel to each other. This configuration makes it possible to prevent the cutting structure 50 from cutting unintended portions that deviate from the cutting direction CD when cutting.

In the cut group 52, the cut portion 64 is arranged at the corner of the boundary between the cover plate 12 and the side plate 30. When the deployable body BL is folded to form the corner of the boundary between the cover plate 12 and the side plate 30, tension according to the thickness of the deployable body BL is applied to the outer surface of the corner. In the cut group 52, the cut portions 62, 64, and 66 are opened to match the corner, so no tension is applied. On the other hand, tension is applied to the connecting portion 69. If the cut portion 68 inclined with respect to the cutting direction CD is not arranged at at least one of the ends of the connecting portion 69, a large tension is applied to both ends of the connecting portion 69 as the cut portions parallel to the cutting direction CD open at both ends of the connecting portion 69.

In the cut group 52, a cut portion 68 perpendicular to the cutting direction CD is arranged in front of the cutting direction CD of the connecting portion 69. This reduces the tension applied to the connecting portion 69. As a result, it is possible to prevent the connecting portion 69 from being pulled and broken. In the cut group 52, by arranging the cut portion 64 behind the cutting direction CD of the connecting portion 69, it is possible to prevent a decrease in cuttability due to the arrangement of the cut portion 68.

As a comparative example, a configuration is considered in which the group of cuts 54 is arranged at the corner between the cover plate 12 and the side plate 30, the cuts 72 are arranged on the fold curve of the corner, and the cuts 74 are inclined toward the cover plate 12. In the comparative example, when the deployable body BL is folded to form a corner, both ends of the cuts 74 become the starting points of bending at the connecting portion between adjacent cuts 70. As a result, at both ends of the cuts 74 of the multiple cuts 70, the cuts are bent on a straight line on which the ends of the cuts 74 of the multiple cuts 70 are aligned. As a result, in the connecting portion, a large tension is applied near the rear end of the cut 70 on the front side of the cutting direction CD and the front end of the cut on the rear side of the cutting direction CD among the adjacent cuts 70. This makes the connecting portion more susceptible to damage. In addition, in each cut 70, the portion of the cover plate 12 located in the center of the cut 70 is likely to curl up in a direction away from the side plate 30 due to tension applied to the connecting portion adjacent to the front and rear ends in the cutting direction CD. This may cause damage to the cut group 54 when the packaging container 10 is used for delivery.

In the cutting structure 50, the tension of the connecting portion 69 is suppressed by the notches 68, which can prevent damage to the connecting portion 69. In addition, because the tension of the connecting portion 69 is suppressed, it is possible to prevent the portion of the cover plate 12 located in the center of each notch 60 from curling up in a direction away from the side plate 30.

In the group of cuts 52, the overlapping portion 12a is positioned above the upper edge of the side plate 30. As a result, when a load is applied from above to the cover plate 12, the overlapping portion 12a comes into contact with the side plate 30, suppressing deformation of the cover plate 12 around the group of cuts 52. As a result, damage to the packaging container 10 due to the load can be suppressed.

In the cutting structure 50, the length L3 is kept to less than the plate thickness, so the overlapping portion 12a does not protrude significantly from the side plate 30. By setting the length L3 to 50% to 100% of the plate thickness of the deployable body BL, the overlapping portion 12a does not protrude significantly from the side plate 30, and can be prevented from coming into contact with the side plate 30 and coming off the side plate 30 when a load is applied.

The length L1 of the notch 62 is equal to or greater than the length L2 of the notch 64. This configuration allows the overlapping portion 12a to be longer. This prevents the overlapping portion 12a from coming into contact with the side plate 30 and coming off the side plate 30 when a load is applied.

Second Embodiment
A packaging container 210 of a second embodiment will be described with reference to Fig. 6 and Fig. 7. The packaging container 210 is different from the packaging container 10 in the configuration of the cutting structure 250 from the configuration of the cutting structure 50. The other configurations of the packaging container 210 are the same as those of the packaging container 10.

The cutting structure 250 includes notch groups 52, 254. The notch group 52 is identical to the notch group 52 of the packaging container 10. The notch group 254 includes a plurality of notches 270. The notches 270 include notch portions 272, 274. The notch portion 272 is arranged parallel to the cutting direction CD. The notch portion 272 is composed of two notch portions arranged at a distance. The notch portion 274 is identical to the notch portion 74.

Third Embodiment
A packaging container 310 of a third embodiment will be described with reference to Fig. 8 and Fig. 9. The packaging container 310 is different from the packaging container 10 in the configuration of the cutting structure 350 from the configuration of the cutting structure 50. The other configurations of the packaging container 310 are the same as those of the packaging container 10.

The cutting structure 350 is disposed at the center position of the cover plate 12 in the front-rear direction. The cutting structure 350 includes notch groups 52 and 354. The notch group 52 is the same as the notch group 52 of the packaging container 10. However, the notch group 52 is disposed on the flat portion of the cover plate 12. The notch group 354 includes a plurality of notches 370. The notches 370 have the same configuration as the notches 60. The notches 370 have a shape that is inverted in the front-rear direction compared to the notches 60. The notches 370 include notches 372, 374, 376, and 378. The notches 372, 374, 376, and 378 correspond to the notches 62, 64, 66, and 68, respectively.

Fourth Embodiment
10, in the packaging container 410 of the fourth embodiment, the configuration of the cutting structure 450 is different from the configuration of the cutting structure 350 compared to the third embodiment. The cutting structure 450 includes incision groups 452 and 454. The incision group 452 has a shape that is inverted in the front-rear direction with respect to the incision group 354. The incision group 454 has a shape that is inverted in the front-rear direction with respect to the incision group 52.

Fifth Embodiment
A packaging container 510 of the fifth embodiment will be described with reference to Fig. 11. The packaging container 510 is different from the packaging container 310 in the configuration of the cutting structure 550 from the configuration of the cutting structure 350. The other configurations of the packaging container 510 are the same as those of the packaging container 310.

The cutting structure 550 has groups of cuts 552, 554 that are inclined from the front end of the cover plate 12 to the left and right. Each of the groups of cuts 552, 554 has a plurality of cuts 60 spaced apart. The user opens the packaging container 510 by lifting the rear edge of the cover plate 12 between the groups of cuts 552, 554 and cutting the groups of cuts 552, 554.

Sixth Embodiment
A packaging container 610 of a sixth embodiment will be described with reference to Figs. 12 and 13. The packaging container 610 has a cubic shape. The packaging container 610 includes a cutting structure 650 arranged on the side plates 630, 632, and 634. The cutting structure 650 includes cut groups 652 and 654. The cut groups 652 and 654 are arranged in parallel with a gap between them. In the cut groups 652 and 654, a plurality of cuts 60 are arranged with a gap between them. In the cut group 652, the cuts 60 are arranged in a direction in which the cut portion 68 extends toward the cut group 654. In the cut group 654, the cuts 60 are arranged in a direction in which the cut portion 68 extends toward the cut group 652. In the side plate 632, the plurality of cuts 60 in the cut groups 652 and 654 are arranged in parallel in the left-right direction. In each of the side plates 630, 634, the multiple notches 60 in the notch groups 652, 654 are arranged to incline upward as they move away from the side plate 632. A notch 636 extending in the up-down direction is arranged between the notch groups 652, 654 of the side plate 630. The user inserts a finger into the notch 636, grasps the portion between the notch groups 652, 654 of the side plate 632, and pulls it in both the left and right directions to cut the cutting structure 650.

As shown in FIG. 14, the notches 60 of the group of notches 654 of the packaging container 610 may be oriented such that the notches 68 extend toward the side opposite the group of notches 654.

The above describes the embodiments of the present invention in detail, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and variations of the specific examples given above.

For example, in the cut 60, the cut portion 68 does not have to be arranged perpendicular to the cutting direction CD. In this case, the cut portion 68 only needs to be arranged at an angle to the cutting direction CD, i.e., the cut portion 62.

For example, the cuts 62, 64 do not have to be aligned parallel to each other. Furthermore, at least one of the cuts 62, 64 may be inclined with respect to the cutting direction CD.

The cutting structure 50 may not have a group of incisions 54. That is, the cutting structure 50 may have one group of incisions 52. The same applies to the cutting structures 250, 350, 450, 550, and 650.

The technical elements described in this specification or drawings have technical utility either alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. The technologies illustrated in this specification or drawings achieve multiple objectives simultaneously, and achieving any one of those objectives is itself technically useful.

10: Packaging container 12: Lid plate 12a: Overlapping portion 12b: Edge 20: Bottom plate 30, 32, 34, 36: Side plate 50: Cutting structure 52, 54: Cut group 60, 70: Cuts 62, 64, 66, 68: Cut portion 69: Connecting portion 80: Gripping portion BL: Developed body CD: Cutting direction

Claims (12)

A cutting structure for a packaging container, comprising:
A first cut group including a plurality of first cuts arranged along a cutting direction on the packaging container ;
a second cut group including a plurality of second cuts arranged along the cutting direction and spaced apart from the first cut group;
Equipped with
Each of the plurality of first cuts is
A first cut portion extending in the cutting direction;
A second cut portion is disposed forward of the first cut portion in the cutting direction, the second cut portion being offset from an extension line of the first cut portion and extending in the cutting direction;
a third cut portion disposed between the first cut portion and the second cut portion and connected to each of the first cut portion and the second cut portion;
A fourth cut portion is connected to a rear end of the first cut portion in the cutting direction and is inclined with respect to the first cut portion,
A cutting structure , wherein the second cut portion is disposed closer to the second cut group than the first cut portion . A cutting structure for a packaging container, comprising:
A first cut group including a plurality of first cuts arranged along a cutting direction on the packaging container ;
a second cut group including a plurality of second cuts arranged along the cutting direction and spaced apart from the first cut group;
Equipped with
Each of the plurality of first cuts is
A first cut portion extending in the cutting direction;
A second cut portion is disposed forward of the first cut portion in the cutting direction, the second cut portion being offset from an extension line of the first cut portion and extending in the cutting direction;
a third cut portion disposed between the first cut portion and the second cut portion and connected to each of the first cut portion and the second cut portion;
A fourth cut portion is connected to a rear end of the first cut portion in the cutting direction and is inclined with respect to the first cut portion,
A cutting structure, wherein the plurality of second notches extend toward the first group of notches at a rear end in the cutting direction and include notches that are positioned closer to the first group of notches than a portion other than the rear end in the cutting direction . 3. The cutting structure according to claim 2, wherein each of the plurality of second cuts has a fifth cut portion arranged parallel to the cutting direction, and a sixth cut portion connected to a rear end of the fifth cut portion in the cutting direction and arranged at an angle toward the first group of cuts relative to the fifth cut portion. 4. The cutting structure according to claim 1, wherein, in two first cuts adjacent to each other in the cutting direction, a front end of the second cut portion of the first cut located rearward in the cutting direction is located rearward of a rear end of the first cut portion of the first cut located forward in the cutting direction. The fourth cut portion is disposed perpendicular to the cutting direction,
The cutting structure according to claim 1 , wherein a length of the fourth cut portion is longer than a length of the third cut portion. The cutting structure according to claim 1 , wherein the first cut portion and the second cut portion are parallel to each other. The cutting structure according to claim 1 , wherein the fourth cut portion extends towards the second group of cuts. The cutting structure according to any one of claims 1 to 7, wherein the first cut portion has a length equal to or greater than the second cut portion. The cutting structure according to any one of claims 1 to 8, wherein the second cut portion is disposed at a corner of the packaging container. The cutting structure according to claim 9, wherein the first cutout and the second cutout are arranged so that a portion of the packaging container located on the second cutout side of the first cutout in a direction perpendicular to the cutting direction overlaps with an edge of a side plate of the packaging container that constitutes the corner portion. The cutting structure according to any one of claims 1 to 10, wherein the distance between the first cut portion and the second cut portion in the direction perpendicular to the cutting direction is equal to or less than the plate thickness of the packaging container. A packaging container having a cutting structure according to any one of claims 1 to 11.

Images