Packing box

Abstract

To provide a packaging box which has excellent productivity and handleability.SOLUTION: A packaging box includes a front surface plate, a first side surface plate, a back surface plate and a second side surface plate. The front surface plate includes: a break line connected to the first side surface plate and the second side surface plate; and a valley folding line which is formed further on a second end surface plate side than the break line, and of which both ends are connected to the first side surface plate and the second side surface plate. The break line is formed so as to separate a first region of the first side surface plate in the first side surface plate, and then is connected to one end of the valley folding line. Also, the break line is formed so as to separate a second region of the second side surface plate in the second side surface plate, and then is connected to the other end of the valley folding line. By a person who opens it breaking the break line, a storage structure of an object to be packaged constituted by the first region, the second region, a third region surrounded by the break line of the front surface plate and the valley folding line, and a fourth region of the back surface plate (inside) which is the surface plate provided opposing to the front surface plate comes into a state rotatable around the valley folding line.SELECTED DRAWING: Figure 3A

Description

[Technical Field]

[0001] The present invention relates to a technique for improving the productivity and handling of packaging boxes. [Background technology]

[0002] Conventionally, trays have been used in packaging boxes used to store energy drink bottles and the like to protect them from external forces and impacts during transportation and carrying, and to prevent them from shifting when stored. For example, Patent Document 1 describes a tray for energy drink bottles designed to reduce the effort required for disposal and reduce environmental impact. Patent Document 2 describes a packaging tray for energy drink bottles designed to make it easy to remove the instruction manual after removing the energy drink bottle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 7-44502 [Patent Document 2] Japanese Patent Application Publication No. 7-41047 Summary of the Invention [Problem to be solved by the invention]

[0004] As described above, packaging boxes used to store easily damaged packaged items such as bottles are also equipped with trays that are separate from the packaging box. This causes problems such as complicating the manufacturing process and the process of packing the packaged items, making it difficult for the opener to remove the packaged items from the packaging box, and making it difficult to disassemble and dispose of the box (such as by separating the items for disposal).

[0005] The present invention has been made in view of the above background, and has an object to provide a packaging box that is excellent in productivity and handling. [Means for solving the problem]

[0006] One aspect of the present invention for achieving the above object is a packaging box comprising a cylindrical body, a front panel, a first side panel connected to the front panel, a back panel connected to the first side panel and facing the front panel, and a second side panel connected to the back panel and facing the first side panel, a first end panel forming one end surface of the cylindrical body, and a second end panel forming the other end surface of the cylindrical body, wherein the front panel has a break line connecting the first side panel and the second side panel, and a valley fold line formed on the second end panel side of the break line, the valley fold line having both ends connected to the first side panel and the second side panel, and the break line The first side panel is formed to separate a first region of the first side panel and then connected to one end of the valley fold line, while the second side panel is formed to separate a second region of the second side panel and then connected to the other end of the valley fold line, so that when an opener breaks the rupture line, the packaged item storage structure, which is composed of the first region, the second region, a third region of the front panel surrounded by the rupture line and the valley fold line, and a fourth region of the back panel (inside), which is a face panel provided opposite the front panel, becomes rotatable around the valley fold line.

[0007] Other problems and solutions disclosed in the present application will be made clear in the detailed description and drawings. [Effects of the Invention]

[0008] According to the present invention, a packaging box with excellent productivity and ease of handling can be provided. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view showing the state (sealed state) before opening the packaging box of the present embodiment. FIG. [Figure 2A] 10A to 10C are diagrams illustrating a procedure for opening a packaging box. [Figure 2B] 10A to 10C are diagrams illustrating a procedure for opening a packaging box. [Figure 2C] 10A to 10C are diagrams illustrating a procedure for opening a packaging box. [Figure 3A] FIG. 2 is a perspective view showing the state after opening the packaging box (opened state). [Figure 3B] FIG. 2 is a partially transparent perspective view showing the state after the packaging box has been opened (opened state). [Figure 4A] FIG. 10 is a view of the blank viewed from the front side of the packaging box. [Figure 4B] FIG. 10 is a view of the blank viewed from the back side of the packaging box. [Figure 5] FIG. 1 is a diagram illustrating the process of manufacturing a packaging box. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same or similar components will be designated by the same reference numerals, and redundant description will be omitted.

[0011] FIG. 1 is a perspective view showing a state (sealed state) of a packaging box 10 described as one embodiment of the present invention before opening. Also, FIGS. 2A to 2C are views explaining the procedure for opening the packaging box 10. Also, FIG. 3A is a perspective view showing a state (opened state) of the packaging box 10 after opening. Also, FIG. 3B is a partially see-through perspective view explaining a state (opened state (after contents have been removed)) after the packaging box 10 has been opened and the packaged items have been removed.

[0012] In the following description, the +z direction (or +z side) of the coordinate axes shown in these figures may be referred to as the upper side (or top), the -z direction (or -z side) as the lower side (or bottom), the +y direction as the front, the -y direction as the rear, the -x direction as the right, and the +x direction as the left. Also, in the following description, the packaged item 2 contained in the packaging box 10 is assumed to be a bottle filled with a liquid such as a beverage or medicine, but the type of packaged item 2 is not necessarily limited.

[0013] In the following figures, mountain fold lines are indicated by dashed lines, valley fold lines by dashed lines, break lines by solid lines, and incision lines by dashed lines. Note that mountain fold lines and valley fold lines are two sides of the same coin, so they are given the same symbol. The break lines may be, for example, perforations or incision lines with intermittently formed connecting portions, but any type of break line may be used as long as it ensures the required functions, such as the required breaking strength and ease of breaking. In addition, break lines and incision lines may also function as fold lines (mountain fold lines, valley fold lines).

[0014] As shown in FIG. 1, the packaging box 10 has an external shape that is roughly a rectangular parallelepiped, with a cylindrical body made up of four side panels (first side panel 11, back panel 12, second side panel 13, and front panel 14) closed by two upper and lower end panels (first end panel (outer) 121 and second end panel (outer) 122). In this embodiment, a packaging box having a shape in which the length of the side in the z-axis direction is longer than the lengths of the sides in the x-axis direction and the y-axis direction is described as an example, but the relationship between the lengths of the three sides is not necessarily limited. Furthermore, names such as "front," "back," and "side" are given merely for convenience in distinguishing between the respective components.

[0015] As shown in the figure, packaging box 10 has a structure (hereinafter referred to as "storage structure 3") in which, when an opener opens it, front panel 14, first side panel 11, and second side panel 13 are torn along break lines 51-53 formed at predetermined positions on these panels (break line 52 formed on first side panel 11 is not shown in the figure), thereby allowing packaged item 2 to be pulled out (opened) while tilting forward. In storage structure 3, for example, a bottle as packaged item 2 is stored in an upright position with the lid (cap) facing up.

[0016] As shown in FIG. 2A, when opening the packaging box 10, the opener first supports the packaging box 10 with one hand and breaks the break line 53 formed on the upper part of the front panel 14 of the packaging box 10 by pressing the periphery of the break line 53 with a finger.

[0017] Next, as shown in FIG. 2B, the opener breaks the break lines 51 and 52 formed on the first side panel 11 and the second side panel 13, respectively, in succession to the break line 53, by pushing the periphery of the break lines 51 and 52 into the inside of the packaging box 10 from both the left and right sides.

[0018] 2C, the opener grasps the upper part of the storage structure 3 with his / her hands and operates it so as to tilt it forward. This causes the entirety of the fracture lines 51-53 formed on the first side panel 11 and the second side panel 13 to break, and the storage structure 3 is pulled out together with the packaged item 2 while tilting forward around the valley fold line (hereinafter referred to as "rotation axis 4") formed on the lower part (the lower part of the front panel 14). In this state, the opener slides the packaged item 2 stored in the storage structure 3 upward to remove the packaged item 2 from the packaging box 10.

[0019] As described above, with the packaging box 10 of this embodiment, an opener can access the packaged item 2 with the simple operation of pulling out the storage structure 3. Furthermore, the opener can easily remove the packaged item 2 from the packaging box 10 by simply pinching the top of the packaged item 2 with their fingers and sliding it upward. Furthermore, the mechanism by which the side of the packaging box 10 is torn open and the storage structure 3 opens diagonally, making the packaged item 2 accessible, is novel and is expected to attract customers. Furthermore, after the packaged item 2 has been removed, the storage structure 3 can be returned to its original position, allowing the packaging box 10 to easily return to a compact state.

[0020] 3A and 3B, the packaging box 10 has therein a structure (hereinafter referred to as a "restraint structure 6") that prevents the storage structure 3 from tilting forward by more than a certain angle when the storage structure 3 is pulled out. The restraint structure 6 also generates an elastic force in a direction that prevents the force that pulls out the storage structure 3 when the packaging box 10 is opened (when the operation of pulling the storage structure 3 forward is performed).

[0021] As shown in Fig. 3B, the packaging box 10 has a reinforcing structure 7 inside it. The reinforcing structure 7 serves to maintain the shape of the packaging box 10 and to protect the packaged item 2 by absorbing external forces and impacts applied to the packaging box 10 during transportation, etc.

[0022] 4A and 4B show forming pieces (hereinafter also referred to as "blanks 5") of the packaging box 10. FIG. 4A is a view of the blank 5 as seen from the front side of the packaging box 10, and FIG. 4B is a view of the blank 5 as seen from the back side of the packaging box 10. The blank 5 is formed by punching out a blank sheet made of a material such as cardboard or paperboard. An appropriate material for the blank sheet is selected depending on the functions and specifications required of the packaging box 10.

[0023] As shown in Figure 4A or 4B, the blank 5 has four side panels (a first side panel 11, a back panel 12, a second side panel 13, and a front panel 14) connected together so that their long sides are parallel to each other.

[0024] Extending from the upper ends of each of these four side panels are end panels (first end panel (outer) 121, first end panel (inner) 141) and upper flaps (upper first flap 111, upper second flap 131), which form the top surface of the packaging box 10. Extending from the lower ends of each of the four side panels are end panels (second end panel (outer) 122, second end panel (inner) 142) and lower flaps (lower first flap 112, lower second flap 132), which form the bottom surface of the packaging box 10.

[0025] On the side of the front panel 14 opposite to the side where the second side panel 13 is connected, various face panels (pieces of paper) that form the inside of the cylinder formed by the four side panels extend.

[0026] 4A or 4B, the first side panel 11 has a first side panel (outer side) 11u and a first side panel (outer cut-off portion) 11uc (first region in the claims). The second side panel 13 has a second side panel (outer side) 13u and a second side panel (outer cut-off portion) 13uc (second region in the claims).

[0027] The front plate 14 has a front plate (outer upper portion) 14a, a front plate (separation portion) 14c (third region in the claims), and a front plate (outer lower portion) 14b, which are arranged successively from top to bottom.

[0028] On the side opposite to the side where the second side panel 13 of the front panel 14 is connected, the first side panel (upper inner part) 11da, the first side panel (separable inner part) 11dc (first side panel (inner part)), and the first side panel (lower inner part) 11db are connected from top to bottom.

[0029] On the side of the first side panel (inner upper part) 11da opposite to the side where the front panel 14 is connected, a back panel (inner upper part) 12da, a reinforcing plate 15, and a front panel (inner part) 14d are connected in this order.

[0030] The back panel (inner upper part) 2da and part of the reinforcing plate 15 are connected from top to bottom to the back panel (inner elastic part) 12ds (part of the fourth area in the claims) and the back panel (inner lower part) 12db (part of the fourth area in the claims).

[0031] A rear panel (inner lower part) 12db is connected to the first side panel (inner separation part) 11dc on the side opposite to the side where the front panel 14 is connected.

[0032] A second side panel (inner cut-off portion) 13dc (second side panel (inner side)) is connected to the rear panel (inner lower portion) 12db on the side opposite to the side to which the first side panel (inner cut-off portion) 11dc is connected.

[0033] As shown in Fig. 4A, on the surface of the blank 5, a boundary line 41 between the first side panel 11 and the back panel 12, a boundary line 42 between the back panel 12 and the second side panel 13, and a boundary line 43 between the second side panel 13 and the front panel 14 are all mountain fold lines (dash-dotted lines) (valley fold lines (dash-two dotted lines) in Fig. 4B). Also, a boundary line 44 between the front panel 14 and the first side panel (inner upper part) 11da, the first side panel (inner separation part) 11dc, and the first side panel (inner lower part) 11db is a mountain fold line (dash-dotted line) (valley fold lines (dash-two dotted lines) in Fig. 4B).

[0034] Furthermore, the boundary lines 45, 46 between the four side panels and each end panel (first end panel (outer) 121, first end panel (inner) 141, second end panel (outer) 122, second end panel (inner) 142) and each flap (upper first flap 111, upper second flap 131, lower first flap 112, lower second flap 132) are all mountain fold lines (dashed lines) (valley fold lines (dashed lines) in Figure 4B).

[0035] As shown in Figure 4A or 4B, the boundary line 51 between the first side panel (outer side) 11u and the first side panel (outer cut-off portion) 11uc, the boundary line 52 between the second side panel (outer side) 13u and the second side panel (outer cut-off portion) 13uc, the boundary line 53 between the front panel (outer upper portion) 14a and the front panel (cut-off portion) 14c, the boundary line 54 between the first side panel (inner upper portion) 11da and the first side panel (inner cut-off portion) 11dc, and the boundary line 55 between the first side panel (inner cut-off portion) 11dc and the first side panel (inner lower portion) 11db are all broken lines (solid lines).

[0036] As shown in Fig. 4A, a boundary line 47 between the first side panel (inner upper portion) 11da and the back panel (inner upper portion) 12da, and a boundary line 48 between the first side panel (inner cut-off portion) 11dc and the back panel (inner lower portion) 12db are both mountain fold lines (dash-dotted lines) (valley fold lines (dash-two dotted lines) in Fig. 4B). Also, a boundary line 49 between the back panel (inner upper portion) 12da and the reinforcing panel 15 is a mountain fold line (dash-dotted line) (valley fold line (dash-two dotted lines) in Fig. 4B).

[0037] As shown in FIG. 4A, a boundary line 61 (rotation axis 4 shown in FIG. 2C and other figures) between the front panel (separation portion) 14c and the front panel (outer lower portion) 14b is a valley fold line (two-dot chain line) (a mountain fold line (one-dot chain line) in FIG. 4B). A boundary line 62 between the back panel (inner upper portion) 12da and the back panel (inner elastic portion) 12ds is a mountain fold line (one-dot chain line) (a valley fold line (two-dot chain line) in FIG. 4B). A boundary line 63 between the reinforcing plate 15 and the back panel (inner elastic portion) 12ds is a fracture line. A boundary line 64 between the back panel (inner elastic portion) 12ds and the back panel (inner lower portion) 12db is a valley fold line (two-dot chain line) (a mountain fold line (one-dot chain line) in FIG. 4B).

[0038] As shown in Fig. 4A, a boundary line 70 between the back panel (inner lower part) 12db and the second side panel (inner separation part) 13dc is a mountain fold line (dash-dotted line) (a valley fold line (dash-two dotted line) in Fig. 4B). Also, a boundary line 71 between the reinforcing panel 15 and the front panel (inner side) 14d is a valley fold line (dash-two dotted line) (a mountain fold line (dash-dotted line) in Fig. 4B).

[0039] Furthermore, the shape of the area surrounded by the first side panel (inner upper part) 11da, the first side panel (inner detachable part) 11dc, the back panel (inner elastic part) 12ds, and the back panel (inner lower part) 12db (the area where the face panel (paper piece) is cut out or not present) is not necessarily limited, but may be set to a shape that improves, for example, the design and the ease of removing the packaged item 2.

[0040] <Bag making and packaging process> When manufacturing (assembling) the packaging box 10 using the blank 5 described above, first, the front surface of the second side panel (inner cut-out portion) 13dc is bonded to the back surface of the second side panel (outer cut-out portion) 13uc with adhesive Ga, the front surface of the back panel (inner upper portion) 12da is bonded to the back surface of the back panel (outer) 12u with adhesive Gb, and the back surface of the front panel (inner) 14d is bonded to the back surface of the front panel (outer upper portion) 14a with adhesive Gc. Figure 5 shows the state after these bonding operations.

[0041] Next, the surfaces of the first side panel (inner upper part) 11da and the first side panel (inner detachable part) 11dc are bonded to the back surface of the first side panel (outer part) 11u with adhesive Gd, the surface of the first side panel (inner detachable part) 11dc is bonded to the back surface of the first side panel (outer detachable part) 11uc with adhesive Ge, and the surface of the first side panel (inner lower part) 11db is bonded to the back surface of the first side panel (outer part) 11u with adhesive Gf to form a cylindrical body.

[0042] Next, the upper first flap 111 and the upper second flap 131 are each folded inward of the packaging box 10. Next, the first end panel (outer) 121 is folded inward of the packaging box 10, and the back surface of the first end panel (outer) 121 is adhered to the surface of the first end panel (inner) 141 with adhesive Gg. At this stage, the packaged item 2 is placed in the storage structure 3 from below (from the bottom side) of the packaging box 10 together with instructions and the like.

[0043] Next, the lower first flap 112 and the lower second flap 132 are each folded inward of the packaging box 10. Next, the second end panel (outer) 122 is folded inward of the packaging box 10, and the back surface of the second end panel (outer) 122 is bonded to the surface of the second end panel (inner) 142 with adhesive Gh.

[0044] <Containment Structure> The housing structure 3 includes a front plate (separation portion) 14c, a first side plate (inner separation portion) 11dc, a second side plate (outer separation portion) 13uc, a first side plate (outer separation portion) 11uc, and a second side plate (inner separation portion) 13dc. The boundary line 61 between the front plate (separation portion) 14c and the front plate (outer lower portion) 14b corresponds to the rotation axis 4 described above.

[0045] Here, in a state where the packaging box 10 has been manufactured, the back surface of the first side panel (outer detachable portion) 11uc is adhered to the surface of the first side panel (inner detachable portion) 11dc with adhesive Ge. Also, the back surface of the second side panel (outer detachable portion) 13uc is adhered to the surface of the second side panel (inner detachable portion) 13dc with adhesive Ga. Therefore, when an opener pulls out the storage structure 3 during opening and the breaking lines 51 and 52 break, the first side panel (outer detachable portion) 11uc and the second side panel (outer detachable portion) 13uc are separated from the first side panel (outer) 11u and the second side panel (outer) 13u, respectively, and are pulled out toward the front of the packaging box 10 while tilting around the rotation axis 4 together with the first side panel (inner detachable portion) 11dc and the second side panel (inner detachable portion) 13dc.

[0046] The left and right sides of the storage structure 3 in the ±x direction have a two-layer structure consisting of a first side panel (outer separable portion) 11uc and a first side panel (inner separable portion) 11dc, and a second side panel (outer separable portion) 13uc and a second side panel (inner separable portion) 13dc. The back side (-y side) of the storage structure 3 also has a two-layer structure consisting of a back panel 12, a back panel (inner upper portion) 12da, a back panel (inner elastic portion) 12ds, and a back panel (inner lower portion) 12db. Furthermore, for example, by storing instructions for the packaged item 2 on the front side (+y side) of the storage structure 3 (e.g., if the packaged item 2 is a drink or medicine, instructions explaining the efficacy, effects, usage, dosage, precautions, etc.), the cushioning effect of the front side of the storage structure 3 can also be enhanced. Therefore, the storage structure 3 can safely protect the packaged item 2. Furthermore, because the storage structure 3 can safely protect the packaged item 2 from external forces and impacts, there is no need to use a tray as in the past, which simplifies the manufacturing, boxing, and boxing processes and reduces manufacturing costs. Furthermore, not using a separate component such as a tray also reduces the effort required for dismantling and disposal.

[0047] <Restraint structure> The restraining structure 6 is composed of a back panel (inner elastic portion) 12ds and a back panel (inner lower portion) 12db. Of these, the back panel (inner lower portion) 12db acts to support the back panel (inner elastic portion) 12ds from below when the storage structure 3 is pulled out during opening. Furthermore, when the storage structure 3 is pulled out, a boundary line 64 between the back panel (inner elastic portion) 12ds and the back panel (inner lower portion) 12db is in a mountain-folded state when viewed from the surface of the blank 5. In other words, the face panel (back panel (inner)) composed of the back panel (inner elastic portion) 12ds and the back panel (inner lower portion) 12db is bent at the boundary line 64 so as to be convex toward the side where the front panel 14 is present. Furthermore, when the storage structure 3 is pulled out during opening, the boundary line 64 rotates around the rotation axis 4 (boundary line 61), causing the back panel (inner elastic portion) 12ds to be lifted diagonally forward. As a result, the back panel (inner elastic portion) 12ds becomes slightly curved toward the front side (toward the front panel 14), generating an elastic force in the direction of pulling out the storage structure 3. This elastic force acts to assist the opener in pulling out the storage structure 3, giving the opener a smooth operating feel. On the other hand, when the storage structure 3 is fully pulled out forward, the back panel (inner elastic portion) 12ds generates an elastic force that pulls the storage structure 3 toward the back panel 12 (in the direction of closing the storage structure 3), and this elastic force acts to prevent the storage structure 3 from flying forward too forcefully when the opener tries to pull out the storage structure 3. The surface of the back panel (inner upper part) 12da is adhered to the back surface of the back panel (outer part) 12u with adhesive Gb, and when the storage structure 3 is fully pulled out, the back panel (inner elastic part) 12ds is fully stretched and the storage structure 3 cannot tilt further forward. This prevents the storage structure 3 from opening too much when opened, causing the packaged item 2 to fall out.

[0048] <Reinforcement structure> The reinforcing structure 7 includes a reinforcing plate 15, a back panel (inner upper part) 12da, and a front panel (inner part) 14d. The surface of the back panel (inner upper part) 12da is bonded to the upper part of the back surface of the back panel (outer part) 12u with adhesive Gb. The back surface of the front panel (inner part) 14d is bonded to the upper part of the back surface of the front panel (outer part) 14a with adhesive Gc. As a result, the reinforcing plate 15 is positioned so as to bridge the front panel 14 and the back panel 12 in the internal space at the top of the packaging box 10 after packaging. Therefore, the packaged item 2 can be effectively protected, for example, when an external force or impact is applied to the packaging box 10. Furthermore, if the length of the packaged item 2 is shorter than the vertical length of the packaging box 10, the vertical length of the reinforcing structure 7 can be adjusted to reliably fix the packaged item 2 inside the packaging box 10 without changing the vertical dimension of the packaging box 10.

[0049] ==Summary== As explained above, the packaging box 10 of this embodiment allows the packaged item 2 to be easily and safely removed thanks to the storage structure 3 and the restraining structure 6. The storage structure 3 and the reinforcing structure 7 also ensure that the packaged item 2 is reliably protected. Although the packaging box 10 of this embodiment has a complex structure, the entire structure can be formed from a single blank 5, eliminating the need for a separate protective structure such as a tray, and allowing efficient, low-cost manufacturing through a simple process. Furthermore, since there is no need to provide a separate structure such as a tray, less work (such as sorting) is required for disassembly and disposal. Thus, the packaging box 10 of this embodiment is excellent in productivity and ease of handling.

[0050] The above description is provided to facilitate understanding of the present invention, and is not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and the present invention includes equivalents thereof.

[0051] For example, a structure (break line, cut line, etc.) may be provided at a predetermined location (for example, a fold line (mountain fold line, valley fold line)) of the packaging box 10 to facilitate disassembly of the packaging box 10. Also, in order to increase the adhesive strength of the adhesive, for example, a cut line, a half-cut line, etc. may be formed on the adhesive surface. [Explanation of symbols]

[0052] 3 Accommodation structure, 6 Restraining structure, 7 Reinforcement structure, 5 Blank, 10 Packaging box, 11 First side plate, 11u First side plate (outside), 11uc First side plate (outer separation part), 11da First side plate (inner upper part), 11db First side plate (inner lower part), 11dc First side plate (inner separation part), 12 Back plate, 12u Back plate (outer side), 12da back plate (inner upper part), 12db back plate (inner lower part), 12ds back plate (inner elastic part), 13 2nd side plate, 13u 2nd side plate (outer side), 13uc 2nd side plate (outer separation part), 14 front plate, 14a front plate (outer upper part), 14b front plate (outer lower part), 14c Front plate (separation part), 14d Front plate (inside), 15 Reinforcement plate, 111 Upper first flap, 112 lower first flap, 131 upper second flap, 132 lower second flap, 121 first end plate (outside), 122 second end plate (outside), 141 first end plate (inside), 142 second end plate (inside), 41 to 49 fold lines (mountain fold lines or valley fold lines), 61 to 64 fold lines (mountain fold lines or valley fold lines), Ga to Gh adhesive

Claims

1. a cylindrical body including a front plate, a first side plate connected to the front plate, a rear plate connected to the first side plate and facing the front plate, and a second side plate connected to the rear plate and facing the first side plate; a first end plate that constitutes one end surface of the cylindrical body; a second end plate that constitutes the other end surface of the cylindrical body; and The front plate is a break line connecting the first side panel and the second side panel; a valley fold line formed on the second end panel side of the fracture line, the both ends of the valley fold line being connected to the first side panel and the second side panel; and The break line is formed in the first side panel so as to separate a first region of the first side panel, and then connected to one end of the valley fold line, while the break line is formed in the second side panel so as to separate a second region of the second side panel, and then connected to the other end of the valley fold line; When an opener breaks the break line, the packaged item storage structure, which is composed of the first area, the second area, a third area surrounded by the break line and the valley fold line of the front panel, and a fourth area of the back panel (inside), which is a face panel provided opposite the front panel, is configured to be rotatable about the valley fold line. packaging box.

2. The packaging box according to claim 1, the first region is formed in two layers by overlapping and adhering a first side panel (inner side) which is a face panel provided on the side of the first region where the second side panel is present, The second region is formed in two layers by overlapping and adhering a second side panel (inner side) which is a face panel provided on the side of the second region where the first side panel is present. packaging box.

3. The packaging box according to claim 1, A fold line is formed on the surface of the rear panel (inner side) so that a part of the rear panel (inner side) is bent so as to be convex toward the side where the front panel is present when the storage structure rotates around the valley fold line. packaging box.

4. The packaging box according to claim 1, a reinforcing plate that is a face plate bridging between the front plate and the rear plate on the side of the housing structure where the first end plate is present; packaging box.

5. The packaging box according to any one of claims 1 to 4, It is formed by assembling a single blank. packaging box.

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