JP2021095183A - Packaging box with partition - Google Patents

Abstract

To provide a packaging box with a partition capable of forming a partition part by bending a side wall and a flat wall.SOLUTION: A packaging box 1 with a partition includes: a lower flap 12 (flat wall) connected to an end part of a side wall 10 in a standing posture via a third folding line L3 (main folding line); and a raised part 15 formed between a pair of separated openings 20 opened from the side wall 10 to the lower flap 12 across the third folding line L3. Both ends of the raised part 15 are connected to the side wall 10 and the lower flap 12 via a pair of inward folding lines L5. The raised part 15 has a narrow part 22 at a position shifted to the lower flap 12 side from a position on the same line as the third folding line L3. A reverse folding line L6 is formed in the narrow part 22. In a process in which the lower flap 12 is bent along the third folding line L3, the raised part 15 is raised inward while being bent in an opposite direction by the pair of inward folding lines L5 and the reverse folding line L6 to form a partition part.SELECTED DRAWING: Figure 4

Description

The present invention relates to a packaged box with a partition for accommodating an article in a state where movement is restricted.

A packaging container in which a pair of side walls and a pair of end walls are erected on the peripheral edge of a rectangular bottom wall is known (Patent Document 1). A cut-out part was formed in. The cut-up portion was formed in a strip shape having the same width, and the opposite side of the cut-up portion was crushed and thinned with the cuts at both ends of the cut-up portion as a boundary. The cut-up portion was raised inward by bending the both end portions and the intermediate portion in opposite directions to form a partition. In this packaging container, both ends of the cut-up portion are easily broken, so it is said that the cut-up portion rises inward and naturally forms a partition as the side wall stands up.

Jitsufuku No. 6-13062

However, in the above-mentioned packaging container, since the cut-up portion is formed in a strip shape having the same width, the intermediate portion of the cut-up portion does not always fold inward, and may fold so as to protrude outward. There was also sex. That is, there were cases where the partition could not be formed due to the standing of the side wall. For this reason, it is also considered that the packaging container cannot be properly assembled by an automatic box making machine that is not equipped with a mechanism for pushing the cut-up portion from the outside.

In order to solve the above problems, the present invention provides a packaging box with a partition capable of forming a partition portion by bending a side wall and a flat wall.

In order to achieve the above object, the present invention has a side wall in an upright posture, a flat wall connected to the end of the side wall via a main fold curve, and the side wall across the main fold curve. It comprises a raised portion formed between a pair of separated openings opened over a flat wall, and both ends of the raised portion are connected to the side wall and the flat wall via a pair of inward folding lines. The narrowed portion is provided, and the raised portion is formed to be the narrowest in the raised portion at a position shifted to the side wall side or the flat wall side from a position on the same line as the main folding curve. In the narrow portion, a reverse folding line for bending the cut-out portion in the direction opposite to the inner folding line is formed, and the side wall and the flat wall are bent along the main folding curve. In the process, the raised portion is raised inward while being bent in the opposite direction by the pair of the inner folding lines and the reverse folding line to form a partition portion.

In this case, the raised portion may have a wide portion formed most widely in the raised portion at a position on the same line as the main folding curve.

In this case, the side wall and the flat wall are formed of a corrugated cardboard sheet, and the corrugated cardboard sheet is crushed from the back surface on at least one of the side wall and the flat wall on the side opposite to the raised portion from the inward folding line. A thin step-crushed portion may be formed, and the step-crushed portion may be formed so as to gradually become deeper toward the inward folding line.

According to the present invention, a partition portion can be formed by bending the side wall and the flat wall.

It is a perspective view which shows the appearance of the packaging box with a partition which concerns on 1st Embodiment of this invention. It is a perspective view which shows the inside of the packaging box with a partition which concerns on 1st Embodiment of this invention. It is a top view which shows the blank of the packaging box with a partition which concerns on 1st Embodiment of this invention. It is an enlarged plan view which shows a part of the blank of the packaging box with a partition which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the periphery of the cut-out part of the blank of the packaging box with a partition which concerns on 1st Embodiment of this invention. It is sectional drawing explaining the process of forming the partition part of the packaging box with a partition which concerns on 1st Embodiment of this invention. It is a top view which shows the blank of the packaging box with a partition which concerns on 2nd Embodiment of this invention. It is a top view which shows the cut-out part of the packaged box with a partition which concerns on 1st modification of 1st and 2nd Embodiment of this invention. It is a top view which shows the cut-out part of the packaged box with a partition which concerns on the 2nd modification of the 1st-second Embodiment of this invention. It is a top view which shows the cut-out part of the packaged box with a partition which concerns on the 3rd modification of 1st to 2nd Embodiment of this invention. It is sectional drawing which shows the partition part of the packaging box with a partition which concerns on the 3rd modification of 1st to 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawing, "Fr" indicates "front", "Rr" indicates "rear", "L" indicates "left", "R" indicates "right", and "U" indicates "U". "Upper" and "D" indicate "lower". The front-back direction is orthogonal to the left-right direction, and the up-down direction is orthogonal to the front-back direction and the left-right direction. Although terms indicating directions and positions are used in the present specification, these terms are used for convenience of explanation and do not limit the technical scope of the present invention.

[First Embodiment]
The packaged box 1 with a partition according to the first embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view showing the appearance of the packaged box 1 with a partition. FIG. 2 is a perspective view showing the inside of the packaged box 1 with a partition. FIG. 3 is a plan view showing a blank 5 of the packaged box 1 with a partition. FIG. 4 is an enlarged plan view showing a part of the blank 5 of the packaged box 1 with a partition. FIG. 5 is a cross-sectional view showing the periphery of the cut-out portion 15 of the blank 5.

[Overview of packaging box with partition]
As shown in FIG. 1, the packaged box 1 with a partition is formed in a substantially rectangular parallelepiped shape according to the height of an article (not shown) to be accommodated. The partitioned packaging box 1 is an A-type box that is sealed by closing the upper end surface and the lower end surface of a substantially square tubular peripheral wall 1W. As shown in FIG. 2, the bottom portion (flat wall) of the packaging box 1 with a partition is provided with a plurality of partition portions 24 for individually partitioning a plurality of articles and restricting their movement. The article is, for example, a substantially cylindrical beverage container or the like, is arranged between adjacent partition portions 24, and is supported in a state of being partitioned by the partition portion 24.

The partitioned packaging box 1 is formed by assembling the blank 5 shown in FIG. The blank 5 is formed by punching a single paper corrugated cardboard sheet with a die or the like. The corrugated cardboard sheet is, for example, a double-sided corrugated cardboard sheet in which a front liner 9B and a back liner 9C (see FIG. 5) are bonded to a corrugated cardboard 9A. Note that FIGS. 3 and 4 show the front liner 9B side. In the present specification, the direction parallel to the corrugated cardboard sheet 9A is referred to as the "step direction", and the direction orthogonal to the step direction is referred to as the "flow direction". “X” shown in the drawing indicates “step direction”, and “Y” indicates “flow direction”. Further, in the present specification, the terms above, below, and the like refer to the concepts above, below, and the like in the assembled state (used state) of the packaged box 1 with a partition.

[blank]
As shown in FIG. 3, the blank 5 includes a pair of first side walls 10A, a pair of second side walls 10B, a pair of upper inner flaps 11A, a pair of upper outer flaps 11B, and a pair of lower inner flaps 12A ( It is provided with a flat wall) and a pair of lower outer flaps 12B (flat wall). In the following description, the pair of parts included in the blank 5 will be described focusing on one part unless otherwise specified. Further, in the description common to the first side wall 10A and the second side wall 10B, it is simply referred to as "side wall 10", and only arithmetic numbers are added to the reference numerals. Similarly, in the description common to the upper inner flap 11A and the upper outer flap 11B, it is simply called "upper flap 11", and in the explanation common to the lower inner flap 12A and the lower outer flap 12B as an example of a flat wall, the description is common. It is simply called "lower flap 12", and only arithmetic numbers are attached to these codes.

<1st side wall, 2nd side wall>
The pair of first side walls 10A and the pair of second side walls 10B are alternately connected from one side to the other in the flow direction via the first folding curve L1. The first side wall 10A and the second side wall 10B are formed in a substantially rectangular shape. Specifically, the first side wall 10A is formed in a substantially rectangular shape shorter than the second side wall 10B in the flow direction. At the other end of the second side wall 10B in the flow direction, a joint piece 13 is continuously provided via the first folding curve L1.

<Upper inner flap, upper outer flap>
The upper inner flap 11A is continuously provided at one end (upper end) of the first side wall 10A in the step direction via the second folding curve L2. The upper inner flap 11A is formed in a substantially rectangular shape, and its dimension in the step direction (extended dimension) is set to be approximately half of the dimension in the flow direction of the first side wall 10A. The upper outer flap 11B is continuously provided at one end (upper end) of the second side wall 10B in the step direction via the second folding curve L2. The upper outer flap 11B is formed in a substantially rectangular shape, and its extending dimension is substantially the same as the extending dimension of the upper inner flap 11A.

<Lower inner flap, lower outer flap>
The lower inner flap 12A is continuously provided at the other end (lower end) of the first side wall 10A in the step direction via the third folding curve L3. The lower inner flap 12A is formed in an irregular shape in which a rectangular tip side corner portion is cut out in a trapezoidal shape. The notch of the lower inner flap 12A is formed to prevent interference with the partition portions 24 formed on the left and right ends of the first side wall 10A when the packaging box 1 with a partition is assembled (see FIG. 2). .. The extension dimension of the lower inner flap 12A is substantially the same as the extension dimension of the upper inner flap 11A. The lower outer flap 12B is continuously provided at the other end (lower end) of the second side wall 10B in the step direction via the third folding curve L3. The lower outer flap 12B is formed in substantially the same shape as the upper outer flap 11B.

The first to third folding curves L1 to L3 are general-purpose ruled lines in which the corrugated cardboard sheet is crushed from the back liner 9C side in the thickness direction. The general-purpose ruled line has a function of bending (normally folding) the corrugated cardboard sheet so that the back liner 9C faces inward. The first to third folding curves L1 to L3 are not limited to general-purpose ruled lines, and may be any structure as long as it has a structure for bending a corrugated cardboard sheet, such as a lead ruled line in which a plurality of cuts are formed at predetermined intervals on the general-purpose ruled line.

<Incision part>
A plurality of (12) cutout portions 15 are arranged side by side on the side wall 10 and the lower flap 12 along the third folding curve L3 (main folding curve). Specifically, one raised portion 15 is formed on each first side wall 10A and each lower inner flap 12A, and five raised portions 15 are formed on each second side wall 10B and each lower outer flap 12B. It is formed at equal intervals in the flow direction. The cut-out portion 15 is formed between a pair of separation openings 20 that are opened from the side wall 10 to the lower flap 12 across the third folding curve L3. In other words, the raised portion 15 is erected on both edges in the step direction of a rectangular hole opened from the side wall 10 to the lower flap 12. The pair of separation openings 20 are formed so as to have a width in which the raised portion 15 does not contact the side wall 10 and the lower flap 12. Since the plurality of raised portions 15 have the same shape, one raised portion 15 will be described below with reference to FIG.

As shown in FIG. 4, both ends of the raised portion 15 in the step direction are connected to the side wall 10 and the lower flap 12 via a pair of inward folding lines L5. Each inner folding line L5 is a general-purpose ruled line extending in the flow direction, and is formed in parallel with the third folding curve L3. To be precise, the inner folding line L5 on the lower flap 12 side is formed longer than the inner folding line L5 on the side wall 10 side (W2> W1). Further, one notch is made in the central portion of the inner folding line L5 on the lower flap 12 side. The inner folding line L5 is not limited to the general-purpose ruled line, and may be any structure as long as the cut-out portion 15 is normally folded.

The raised portion 15 has a wide portion 21 and a narrow portion 22. The wide portion 21 is formed widest in the flow direction at the raised portion 15 at a position on the same line as the third folding curve L3 of the raised portion 15. The wide portion 21 may be regarded as a line having the longest flow direction, but may also be regarded as a region having a certain area (see the alternate long and short dash line in FIG. 4). On the other hand, the narrow portion 22 is formed to be narrowest in the flow direction at the cut portion 15 at a position shifted to the lower flap 12 side from the position on the same line as the third folding curve L3 of the cut portion 15. ing. The narrow portion 22 may be regarded as a line having the shortest flow direction, but may also be regarded as a region having a certain area (see the two-dot chain line in FIG. 4). In the first embodiment, the length (W2) of the inner folding line L5 on the lower flap 12 side is set to be the same as the width (W3) of the wide portion 21 in the flow direction. Therefore, the dimensions of the wide portion 21 (W3) (inner folding line L5 (W2) on the lower flap 12 side), the inner folding line L5 (W1) on the side wall 10 side, and the narrow portion 22 (W4) in the flow direction are shorter in this order. (W3 = W2> W1> W4).

The cut-out portion 15 gradually widens in the flow direction from the inner folding line L5 on the side wall 10 side to the wide portion 21, gradually narrows in the flow direction from the wide portion 21 to the narrow portion 22, and gradually narrows in the flow direction from the narrow portion 22. It has a shape that gradually widens in the flow direction up to the inner folding line L5 on the lower flap 12 side. That is, the section from the inner folding line L5 on the side wall 10 side to the narrow portion 22 is formed in a substantially hexagonal shape, and the section from the narrow portion 22 to the inner folding line L5 on the lower flap 12 side is formed in a substantially trapezoidal shape. .. Further, the length (H1) in the step direction from the inner folding line L5 on the side wall 10 side to the wide portion 21 (third folding curve L3) is the length in the step direction from the wide portion 21 to the inner folding line L5 on the lower flap 12 side. It is set shorter than (H2) (H1 <H2).

Further, a reverse fold line L6 is formed in the narrow portion 22 in parallel with the inner fold line L5. The reverse folding line L6 is a reverse ruled line obtained by crushing a corrugated cardboard sheet from the front liner 9B side in the thickness direction, and has a function of bending (reverse folding) the raised portion 15 in the direction opposite to the inner folding line L5. .. The reverse folding line L6 is not limited to the reverse ruled line, and may be any structure as long as it has a structure for reverse folding the cut-up portion 15.

The lower flap 12 is formed with a stepped crushed portion 23 formed by crushing a corrugated cardboard sheet from the back surface (back liner 9C) on the side opposite to the raised portion 15 from the inner folding line L5 (see the shaded portion in FIG. 4). ). As shown in FIG. 5, the step crushing portion 23 is formed so as to gradually become deeper toward the inner folding line L5. The step crushing portion 23 is formed to have substantially the same width as the maximum width (wide portion 21) of the raised portion 15 (see FIG. 4).

[Assembly of packaging box with partition]
Next, the assembly process of the packaged box 1 with a partition will be described with reference to FIGS. 1, 2 and 6. FIG. 6 is a cross-sectional view illustrating the process of forming the partition portion 24. The packaging box 1 with a partition may be manually assembled by an operator, or may be automatically or semi-automatically assembled by an automatic box making machine (not shown). Here, as an example, a case where an automatic box making machine assembles a packaging box 1 with a partition will be described. Further, as an initial state before assembling the packaged box 1 with a partition, the first side wall 10A and the second side wall 10B located on both outer sides in the flow direction of the blank 5 are bent along the first folding curve L1, and the joint piece 13 Is adhered to the inner surface of the first side wall 10A, and the packaging box 1 with a partition is doubly folded (not shown).

First, the automatic box making machine bends the pair of the first side wall 10A and the pair of the second side walls 10B at substantially right angles along the first folding curve L1. The four side walls 10 are connected in a standing position in the circumferential direction to form a substantially square tubular peripheral wall 1W having openings at both upper and lower ends (see FIG. 2).

Subsequently, the automatic box making machine bends the pair of lower inner flaps 12A inward of the peripheral wall 1W along the third folding curve L3, and then bends the pair of lower outer flaps 12B along the third folding curve L3 to the peripheral wall 1W. Bend inward. The tips of the pair of lower inner flaps 12A are separated, and the tips of the pair of lower outer flaps 12B are butted against each other. In the automatic box making machine, the lower outer flap 12B is adhered to the lower inner flap 12A with an adhesive.

As described above, the pair of lower outer flaps 12B overlap with the pair of lower inner flaps 12A, the opening at the lower end of the peripheral wall 1W is closed, and the bottom portion of the partitioned packaging box 1 is formed.

Here, both ends of the raised portion 15 are in a state where they are easily folded forward (valley-folded) along the pair of inward folding lines L5. Further, since the rigidity of the lower flap 12 side of the cut portion 15 is lowered by the step crushing portion 23, the lower flap 12 side of the cut portion 15 is in a state of being very easily folded normally. Further, the narrow portion 22 of the raised portion 15 is the narrowest, and the narrow portion 22 is formed with a reverse polygonal line L6, so that the rigidity of the narrow portion 22 is very low. Therefore, the narrow portion 22 is in a state of being easily reverse-folded (mountain-folded) along the reverse-folding line L6. Further, since the wide portion 21 formed on the same line as the third folding curve L3 is the widest, it has the highest rigidity (strength) among the raised portions 15. Therefore, the raised portion 15 is in a state where it is difficult to break in the wide portion 21.

With the above configuration, as shown in the upper part of FIG. 6, in the process in which the side wall 10 and the lower flap 12 are bent along the third folding curve L3, the cut-out portion 15 has a pair of inward folding lines L5 and a reverse folding line L6. It is raised inward while bending in the opposite direction. Specifically, in conjunction with the bending of the lower flap 12, the raised portion 15 is forward-folded along the pair of inward folding lines L5 and reverse-folded along the reverse folding line L6. Since the raised portion 15 is not in contact with the side wall 10 and the lower flap 12, the start-up of the raised portion 15 is not hindered by the contact friction with the side wall 10 or the like.

As shown in the lower part of FIG. 6, when the lower flap 12 is bent at a substantially right angle with respect to the side wall 10, the cut-out portion 15 projects the narrow portion 22 (reverse folding line L6) toward the inside of the peripheral wall 1W. A partition portion 24 bent in a substantially L shape is formed. The notched portions 15 at both left and right ends of the first side wall 10A are raised through the notches of the lower inner flap 12A, and the partition portions 24 are provided in the region of the notches (see FIG. 2).

As described above, as shown in FIG. 2, the packaged box 1 with a partition having a plurality of partition portions 24 formed on the bottom thereof is assembled. The inside of the packaging box 1 with a partition (peripheral wall 1W) is divided into 12 storage spaces by 12 partition portions 24. The opening (upper flap 11) at the upper end of the peripheral wall 1W is in an open state.

Next, the worker places an article (not shown) in the accommodation space partitioned by the partition portion 24. The articles arranged in the storage space are supported in a state where the movement is restricted by the adjacent partition portion 24 and the side wall 10.

Next, as shown in FIG. 1, the operator bends the pair of upper inner flaps 11A inward of the peripheral wall 1W along the second folding curve L2, and then bends the pair of upper outer flaps 11B into the second folding curve L2. Bend inward of the peripheral wall 1W along. The pair of upper outer flaps 11B overlaps with the pair of upper inner flaps 11A and closes the opening at the upper end of the peripheral wall 1W. The operator attaches an adhesive tape (not shown) along the abutting portion of the pair of upper and outer flaps 11B. The upper flap 11 may be fixed with an adhesive instead of the adhesive tape.

As a result, the packaged box 1 with a partition is in a sealed state (see FIG. 1).

In the packaged box 1 with a partition according to the first embodiment described above, the narrowest narrow portion 22 is formed in the raised portion 15 and the reverse folding line L6 for reverse folding is formed in the narrow portion 22. It had been. According to this configuration, the raised portion 15 can be easily folded forward at the pair of inward folding lines L5, and can be easily folded backward at the narrow portion 22 (reverse folding line L6). As a result, the cut-up portion 15 can be raised while being bent along with the bending of the lower flap 12, and the partition portion 24 can be formed naturally (automatically). As a result, the packaged box 1 with a partition can be properly assembled even if the automatic box-making machine is not equipped with a mechanism for pushing the cut-up portion 15 from the outside.

Further, in the packaged box 1 with a partition according to the first embodiment, the widest wide portion 21 of the raised portion 15 is formed on the same line as the third folding curve L3 (main folding curve). When the lower flap 12 is bent, a bending force acts on the wide portion 21, but since the wide portion 21 has the highest rigidity (strength) in the raised portion 15, the raised portion 15 is prevented from being broken in the wide portion 21. be able to. As a result, the raised portion 15 can be bent at the inner folding line L5 and the reverse folding line L6, which have lower rigidity (strength) than the wide portion 21.

Further, according to the packaged box 1 with a partition according to the first embodiment, the rigidity (strength) around the inner folding line L5 is formed by forming the stepped portion 23 in the vicinity of the lower flap 12 side of the raised portion 15. Can be further reduced. As a result, the cut-up portion 15 can be easily folded forward along the inner folding line L5.

In the packaged box 1 with a partition according to the first embodiment, the raised portion 15 (partition portion 24) is provided on the bottom portion (the portion extending over the side wall 10 and the lower flap 12), but the present invention is limited to this. Not done. The raised portion 15 may be provided on the top portion (the portion extending over the side wall 10 and the upper flap 11), or may be provided on both the bottom portion and the top portion (neither is shown). Further, in the packaging box 1, the upper flap 11 having no raised portion 15 may be omitted (deleted) (not shown).

[Second Embodiment]
Next, with reference to FIG. 7, the packaged box 2 with a partition according to the second embodiment will be briefly described. FIG. 7 is a plan view showing a blank 6 of the packaged box 2 with a partition. In the following description, the same or corresponding configurations as those of the partitioned packaging box 1 according to the first embodiment are designated by the same reference numerals, and the same or corresponding description will be omitted.

The partitioned packaging box 1 according to the first embodiment is a so-called A-type box, but the partitioned packaging box 2 according to the second embodiment is a tray on which a side wall 10 is erected on the peripheral edge of the bottom wall 30.

The blank 6 of the packaged box 2 with a partition is connected to a square bottom wall 30 (flat wall) and both ends of the bottom wall 30 in the left-right direction (step direction) via a main folding curve L7 (for example, a general-purpose ruled line). A pair of first side walls 10A and a pair of second side walls 10B connected to both ends of the bottom wall 30 in the front-rear direction (flow direction) via a main folding curve L7 are provided. The plurality of raised portions 15 (partition portions 24) are formed from the bottom wall 30 to the side wall 10 across the main folding curve L7. Fixing pieces 31 are continuously provided at both ends of the first side wall 10A in the flow direction. In the packaging box 2 with a partition, the first side wall 10A and the second side wall 10B are bent along the main folding curve L7 to stand on the peripheral edge of the bottom wall 30, and the fixing piece 31 is adhered to the outer surface or the inner surface of the second side wall 10B. Assembled with.

According to such a packaging box 2 with a partition, the cut-up portion 15 can be raised while being bent as the side wall 10 is bent (erected), and the partition portion 24 is naturally (automatically) formed. It is possible to obtain the same effect as that of the packaged box 1 with a partition according to the first embodiment.

In the partitioned packaging boxes 1 and 2 according to the first to second embodiments, the raised portion 15 has a shape as if a hexagon and a trapezium are combined, but the present invention is not limited to this. For example, as shown in FIG. 8A, the raised portion 16 may have a shape in which the narrow sides of two trapeziums are connected to each other (first modification). In this case, the connecting portion of the two trapeziums is the narrow portion 22, and the wide portion 21 is omitted. In addition, for example, as shown in FIG. 8B, the raised portion 17 may have a shape in which two wide quadrangles are connected by a narrow quadrangle (second modification). In this case, the narrow quadrangle becomes the narrow portion 22, and the wide portion 21 is omitted. The shape of these raised portions 15 to 17 is an example, and any shape as long as the raised portion 15 to 17 has at least a narrow portion 22 having a minimum width at a position where it is folded backward. It may be.

Further, in the packaging boxes 1 and 2 with partitions according to the first to second embodiments, the wide portion 21 is provided in the raised portion 15, but the width is wide as in the first and second modifications described above. Part 21 may be omitted.

Further, in the partitioned packaging boxes 1 and 2 according to the first and second embodiments (including the first and second modified examples; the same applies hereinafter), the narrow portions 22 of the raised portions 15 to 17 are the first. The present invention is not limited to this, although it is formed at a position shifted to the lower flap 12 side (bottom wall 30 side) from the position on the same line as the three-fold curve L3 (main folding curve L7). For example, as shown in FIG. 9A, the narrow portion 22 of the raised portion 15 is formed at a position shifted to the side wall 10 side from the position on the same line as the third folding curve L3 (main folding curve L7). It may be (third modification). In this case, as shown in FIG. 9B, the raised portion 15 is bent so as to project the narrow portion 22 (reverse folding line L6) upward.

Further, in the packaging boxes 1 and 2 with partitions according to the first to second embodiments, the step crushing portion 23 is formed on the lower flap 12 side (bottom wall 30 side), but the present invention is not limited to this. For example, the step crushing portion 23 may be formed on the side wall 10 side on the side opposite to the raised portion 15 to 17, or may be formed on both the side wall 10 and the lower flap 12 (bottom wall 30 side). Good (neither is shown). Further, the step crushing portion 23 is formed so as to gradually become deeper toward the inner folding line L5, but the present invention is not limited to this, and the step crushing portion 23 may be formed to have substantially the same depth in the entire area (not shown). Further, the step crushing portion 23 may be omitted.

Further, in the packaging boxes 1 and 2 with partitions according to the first to second embodiments, the raised portions 15 to 17 (partition portions 24) are provided on both the front and rear sides and the left and right sides. Not limited. The raised portions 15 to 17 (partition portions 24) may be provided on both front and rear sides or both left and right sides, may be provided only on the front side (or rear side), or may be provided on the left side (or right side). It may be provided only in (neither is shown).

Further, in the packaging boxes 1 and 2 with partitions according to the first to second embodiments, twelve cut-out portions 15 to 17 (partition portions 24) are provided, but the cut-out portions 15 to 17 are provided. It suffices if one or more are provided, and the number of formations thereof can be freely changed.

Further, the packaging boxes 1 and 2 with partitions according to the first to second embodiments are formed of a double-sided corrugated cardboard sheet made of paper, but the present invention is not limited thereto. The partitioned packaging boxes 1 and 2 may be formed of single-sided corrugated cardboard, double-sided corrugated cardboard, double-sided double-sided corrugated cardboard, or the like, or may be made of thick paper, a resin plate (sheet), or the like.

The description of the above embodiment shows one aspect of the packaged box with a partition according to the present invention, and the technical scope of the present invention is not limited to the above embodiment. The technical scope of the present invention is not limited to the above embodiment. The present invention may be variously modified, replaced or modified without departing from the spirit of the technical idea, and the claims include all embodiments that may be included within the scope of the technical idea.

1,2 Packaging box with partition 1W Circumferential wall 10A 1st side wall (side wall)
10B 2nd side wall (side wall)
12A Lower inner flap (flat wall)
12B lower outer flap (flat wall)
15 to 17 Cut-up part 20 Separation opening 21 Wide part 22 Narrow part 23 Step-crushed part 24 Partition part 30 Bottom wall (flat wall)
L3 3rd fold curve (main fold curve)
L5 Inner fold line L6 Reverse fold line L7 Main fold curve

Claims (3)

Side walls (10A, 10B) in an upright position and
Flat walls (12A, 12B, 30) connected to the end of the side wall via a main folding curve (L3, L7), and
A notched portion (15 to 17) formed between a pair of separated openings (20) opened from the side wall to the flat wall across the main folding curve.
Both ends of the raised portion are connected to the side wall and the flat wall via a pair of inward folding lines (L5).
The narrowed portion (22) formed in the narrowest portion of the raised portion at a position shifted to the side wall side or the flat wall side from a position on the same line as the main folding curve. Have,
A reverse fold line (L6) for bending the raised portion in the direction opposite to the inner fold line is formed in the narrow portion.
In the process in which the side wall and the flat wall are bent along the main folding curve, the raised portion is raised inward while being bent in the opposite direction by the pair of the inner folding lines and the reverse folding line, and the partition portion. A packaging box with a partition, which comprises forming (24). The first aspect of the present invention, wherein the raised portion has a wide portion (21) formed most widely in the raised portion at a position on the same line as the main folding curve. Packaging box with partition. The side wall and the flat wall are made of corrugated cardboard.
At least one of the side wall and the flat wall is formed with a step-crushed portion (23) formed by crushing the corrugated cardboard sheet from the back surface on the side opposite to the raised portion from the inner folding line.
The packaged box with a partition according to claim 1 or 2, wherein the step-crushed portion is formed so as to gradually become deeper toward the inward folding line.

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