Packaging box

Abstract

To provide a packaging box having a large opening from which a content can be easily taken out.SOLUTION: A packaging box 1 includes a rear surface panel 22, a side surface panel 23, a front surface panel 24, a side surface panel 25 and a stick-on piece 26 which are connected together, and has a cylindrical body 11 configured into a cylindrical shape by joining the stick-on piece 26 to a front side of the rear surface panel 22, an upper lid body 40 including an upper lid surface panel 41 that is extended from an upper end part of the front surface panel 24 and closes an upper opening of the cylindrical body 11 and an upper lid surface insertion piece 42 that is inserted into a rear side of the rear surface panel 22, and a lower lid body 60 including a lower lid surface panel 61 that is extended from the lower end part of the rear surface panel 22 and closes a lower opening of the cylindrical body 11 and a lower lid surface insertion piece 62 that is inserted into the rear side of the rear surface panel 22. The rear surface panel 22 includes a sealing part 22B located on a side surface panel 23 side and an opening part 22A located on a side surface panel 25 side, and the sealing part 22B is joined to the upper lid surface insertion piece 42 and the lower lid surface insertion piece 62.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a packaging box. [Background technology]

[0002] For example, a packaging box described in Patent Document 1 is known as a packaging box. This packaging box has a square tubular box body having a front panel, a back panel, a left side panel, and a right side panel, an upper lid body that closes the upper opening of the box body, and a lower lid body that closes the lower opening of the box body. In addition, a knob part connected to the upper lid body by a break line is formed on the front panel. A packaging box having such a configuration is opened by pressing the knob part with a finger to break the break line, separating the knob part from the front panel, and lifting the upper lid body by holding the knob part. After opening, the box is resealed by inserting the insertion flap part extending from the upper lid body to the back side of the front panel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3161914 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the packaging box of Patent Document 1 has a configuration in which the upper lid is raised to open the upper opening of the box body, so that the opening is narrow, making it difficult to remove the contents from the packaging box.

[0005] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide a packaging box which has a large opening area when opened and from which the contents can be easily removed. [Means for solving the problem]

[0006] These objects can be achieved by the present invention described below in (1) to (8).

[0007] (1) When mutually perpendicular directions are defined as the first direction and the second direction, a cylindrical body including a first main panel, a first side panel, a second main panel, a second side panel, and an adhesive piece connected in the first direction, the cylindrical body being formed into a cylindrical shape by joining the adhesive piece to the front side of the first main panel; a first cover body including a first cover plate extending from one end of the second main plate in the second direction and closing an opening at one end of the cylindrical body, and a first insertion piece inserted into a back side of the first main plate; a second cover body including a second cover plate extending from the other end of the second main plate in the second direction and closing an opening at the other end of the cylinder body, and a second insertion piece inserted into the back side of the first main plate, The first main panel includes a sealing portion located on the first side panel side and an opening portion located on the second side panel side, the sealing portion being joined to the first insertion piece and the second insertion piece, A packaging box which can be opened by cutting off the second side panel from the adhesive piece, and in an opened state, the opening portion and the second side panel open and close.

[0008] (2) The packaging box according to (1) above, wherein the first main panel further has a fold line extending along the second direction and separating the opening portion from the sealing portion.

[0009] (3) The first main plate further has a notch portion overlapping the fold line, opening on the opening side and protruding on the sealing side, The packaging box according to (2) above, wherein the fold line is folded to reveal a protruding piece that protrudes from the opening portion and abuts against the first insertion piece or the second insertion piece.

[0010] (4) A packaging box as described in (1) above, having a resealing insert piece extending from an end of the first main panel on the second side panel side and overlapping the back side of the second side panel.

[0011] (5) The first insert piece is inserted into a first gap formed between the resealing insert piece and the first main panel and engages with the resealing insert piece; The packaging box described in (4) above, wherein the second insertion piece is inserted into a second gap formed between the resealing insertion piece and the first main panel and engages with the resealing insertion piece.

[0012] (6) The adhesive piece has a tear piece that bulges into the second side panel, The packaging box according to (1) above, wherein the adhesive piece and the second side panel are separated by a break line.

[0013] (7) The adhesive piece has a zipper extending along the second direction on the second side panel side from a joint portion with the first main panel, The packaging box according to (1) above, wherein the first main panel has a through hole formed at a position overlapping with the zipper.

[0014] (8) The length of the first main plate and the second main plate in the first direction is 80 mm or more, The packaging box according to (1) above, wherein the length of the first side panel and the second side panel in the first direction is 30 mm or less. Effect of the Invention

[0015] According to this invention, the opening section and the second side panel can be opened and closed by cutting the second side panel from the adhesive piece and opening it. Therefore, a large opening is formed that spans the first main panel and the second side panel, making it easy to insert and remove the storage section. In addition, for example, a resealing function can be easily added while reducing the area of ​​the material, such as paper, used. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is a development view of the packing box according to the first embodiment, seen from the front side. [Diagram 2] FIG. 11 is a plan view illustrating a method for assembling the packaging box. [Diagram 3]FIG. 11 is a plan view illustrating a method for assembling the packaging box. [Figure 4] FIG. 2 is a perspective view illustrating a method for assembling the packaging box. [Diagram 5] FIG. 2 is a perspective view illustrating a method for assembling the packaging box. [Figure 6] FIG. 2 is a perspective view illustrating a method for assembling the packaging box. [Figure 7] FIG. 2 is a perspective view illustrating a method for assembling the packaging box. [Figure 8] FIG. 2 is a perspective view illustrating a method for assembling the packaging box. [Figure 9] FIG. 2 is a perspective view illustrating a method for assembling the packaging box. [Figure 10] FIG. 2 is a perspective view illustrating a method for opening the packaging box. [Figure 11] FIG. 2 is a perspective view illustrating a method for opening the packaging box. [Figure 12] FIG. 2 is a perspective view illustrating a method for opening the packaging box. [Figure 13] FIG. 2 is a perspective view illustrating a method for removing an item from a packaging box. [Figure 14] FIG. 11 is a perspective view illustrating a method for resealing the packaging box. [Figure 15] FIG. 11 is a development view of a packing box according to a second embodiment, as viewed from the front side. [Figure 16] FIG. 2 is a perspective view illustrating a method for opening the packaging box. [Figure 17] FIG. 2 is a perspective view illustrating a method for opening the packaging box. [Figure 18] FIG. 11 is a development view of a packing box according to a third embodiment, as viewed from the front side. [Figure 19] FIG. 2 is a perspective view illustrating a method for assembling the packaging box. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] First Embodiment The packaging box 1 of this embodiment is formed by assembling box-body forming pieces 10 that are integrally formed by punching out one blank sheet such as paper. The blank sheet may be made of any material, and suitable materials include white cardboard, resin-laminated paper, aluminum-laminated paper, and aluminum-deposited paper.

[0018] In the following, for convenience of explanation, a folding method in which the front surface of the box-forming piece 10 is convex is also referred to as a "normal folding", and a folding method in which the back surface is convex is also referred to as a "reverse folding". Moreover, the upper side in Fig. 1 is referred to as "top" and the lower side is referred to as "bottom". Moreover, the horizontal direction in Fig. 1 is the first direction, and the vertical direction perpendicular to the horizontal direction is the second direction.

[0019] 1 is a development view of box-forming piece 10 as viewed from the front. As shown in the figure, box-forming piece 10 has resealing insert piece 21, which are connected in the horizontal direction (first direction), back panel 22 as a first main panel, side panel 23 as a first side panel, front panel 24 as a second main panel, side panel 25 as a second side panel, and adhesive piece 26. In addition, resealing insert piece 21, back panel 22, side panel 23, front panel 24, side panel 25, and adhesive piece 26 are divided by fold lines 31, 32, 33, 34, and 35 that extend in the vertical direction (second direction). Specifically, resealing insert piece 21 and back panel 22 are separated by fold line 31, back panel 22 and side panel 23 are separated by fold line 32, side panel 23 and front panel 24 are separated by fold line 33, front panel 24 and side panel 25 are separated by fold line 34, and side panel 25 and adhesive piece 26 are separated by fold line 35.

[0020] The pair of rear panel 22 and front panel 24 have almost the same shape, and the pair of side panel 23 and side panel 25 also have almost the same shape. The width W1 (horizontal length) of rear panel 22 and front panel 24 is significantly larger than the width W2 (horizontal length) of side panel 23 and side panel 25. There are no particular limitations on widths W1 and W2, but for example, width W1 is preferably 80 mm or more, and width W2 is preferably 30 mm or less. Therefore, the packaging box 1 formed by assembling box body forming pieces 10 has a thin thickness (the distance between rear panel 22 and front panel 24 is short) and a flat shape. In this embodiment, width W1 is about 135 mm, width W2 is about 15 mm, and length L is about 155 mm. By making it such a size, it becomes a shape suitable for stacking and storing thin sheet-like contents such as poultices (pain relieving and anti-inflammatory patches).

[0021] Although not shown, fold line 31 separating resealing insert piece 21 from back panel 22 is configured as a perforated fold line, which makes it easy to fold resealing insert piece 21 relative to back panel 22. However, fold line 31 is not particularly limited.

[0022] Also, at both ends of the fold line 31, there are provided notches 221 cut in an L-shape from both ends of the back panel 22 toward the inside. Therefore, as described below, when the resealing insert piece 21 is folded 90° normal to the back panel 22 at the fold line 31, a pair of protruding pieces 222 protruding from the back panel 22 appears, and a first gap G11 is formed between the upper protruding piece 222 and the resealing insert piece 21, and a second gap G12 is formed between the lower protruding piece 222 and the resealing insert piece 21 (see FIG. 11, for example).

[0023] In addition, a fold line 223 extending vertically is provided in the approximate center of the back panel 22. The portion on the side of the resealing insert piece 21 with respect to the fold line 223 becomes the opening portion 22A that can be opened and closed when opening, and the portion on the side panel 23 side becomes the sealing portion 22B that is joined and sealed with the upper cover surface insert piece 42 and the lower cover surface insert piece 62. In this way, by providing the fold line 223 between the opening portion 22A and the sealing portion 22B to separate them, the opening portion 22A can be easily opened and closed by folding the fold line 223. In addition, by folding the fold line 223, the stress when opening and closing the opening portion 22A is not easily transmitted to the sealing portion 22B, and the damage and peeling of the sealing portion 22B can be suppressed. The arrangement of the fold line 223 may be appropriately set according to the required size of the opening portion 22A. That is, if it is desired to make the opening larger, the fold line 223 can be shifted toward the side panel 23, and conversely, if it is desired to make the opening smaller, the fold line 223 can be shifted toward the resealing insert 21.

[0024] In addition, the back panel 22 has a pair of notches 224 provided at both ends of the fold line 223 so as to overlap the fold line 223. In a state where the packaging box 1 is assembled, the upper notch 224 overlaps the upper cover surface insert piece 42, and the lower notch 224 overlaps the lower cover surface insert piece 62. In addition, each notch 224 is cut in a U-shape that opens toward the opening portion 22A side and is convex toward the sealing portion 22B side. Therefore, when the opening portion 22A is folded back at the fold line 223 relative to the sealing portion 22B, a pair of protruding pieces 225 protruding from the opening portion 22A appears. Then, the protruding pieces 225 abut against and brace the upper cover surface insert piece 42 and the lower cover surface insert piece 62, making it easier to maintain the opening portion 22A in an open state (see, for example, FIG. 11).

[0025] The back panel 22 has a pair of cutouts 226 formed vertically side by side in the opening portion 22A. A glued area 227 extending vertically in a line is provided between the pair of cutouts 226. By cutting out both ends of the glued area 227 with the cutouts 226 in this way, it becomes easy to apply glue B to the glued area 227.

[0026] The back panel 22 also has a pair of legs 228 protruding from the lower end. The legs 228 are used together with legs 242, which will be described later, to stabilize the position of the packaging box 1 when the packaging box 1 is displayed in an upright position.

[0027] The adhesive piece 26 has a tear piece 261 that bulges from its center into the adjacent side panel 25. In the illustrated example, the tear piece 261 is semicircular, but the shape of the tear piece 261 is not particularly limited. In addition, the fold line 35 that separates the adhesive piece 26 and the side panel 25 is configured with a break line 351. This makes it easy to separate the side panel 25 from the adhesive piece 26.

[0028] Additionally, a top cover panel 41 serving as a first cover panel is extended from the upper end (one end in the second direction) of the front panel 24, and a top cover surface insertion piece 42 serving as a first insertion piece is further extended from the upper end of the top cover panel 41. The front panel 24 and the top cover panel 41 are separated by a fold line 51 extending in the horizontal direction, and the top cover panel 41 and the top cover surface insertion piece 42 are separated by a fold line 52 extending in the horizontal direction.

[0029] In addition, at both ends of the fold line 52, L-shaped notches 411 are provided that are cut inward from both ends of the top cover panel 41. Therefore, as described below, when the top cover surface insertion piece 42 is folded 90° forward at the fold line 52 relative to the top cover panel 41, a protruding piece 412 protruding from the top cover panel 41 appears, and a gap G21 is formed between the protruding piece 412 and the top cover surface insertion piece 42 (for example, see FIG. 9).

[0030] Flaps 43, 44 serving as first flaps are extended from the upper ends of the side panels 23, 25. The side panel 23 and the flap 43 are separated by a fold line 53 extending in the horizontal direction, and the side panel 25 and the flap 44 are separated by a fold line 54 extending in the horizontal direction.

[0031] The top cover panel 41, the top cover surface insertion piece 42, and the pair of flaps 43, 44 constitute an upper cover body 40 as a first cover body that closes the upper opening of the packaging box 1.

[0032] Symmetrically, a bottom cover panel 61 serving as a second cover panel is extended from the lower end (the other end in the second direction) of the front panel 24, and a bottom cover surface insertion piece 62 serving as a second insertion piece is further extended from the lower end of the bottom cover panel 61. The front panel 24 and the bottom cover panel 61 are separated by a fold line 71 extending in the horizontal direction, and the bottom cover panel 61 and the bottom cover surface insertion piece 62 are separated by a fold line 72 extending in the horizontal direction.

[0033] Further, a pair of notches 241 are provided midway along the fold line 71 so as to overlap the fold line 71. Each notch 241 is cut in a U-shape that opens to the upper side (front panel 24 side) and protrudes to the lower side (lower cover panel 61 side). Therefore, when the lower cover panel 61 is folded 90° along the fold line 71 relative to the front panel 24, a pair of legs 242 protruding from the lower end of the front panel 24 appears (see FIG. 6, for example). The legs 242 are used together with the above-mentioned legs 228 to stabilize the posture of the packaging box 1 when the packaging box 1 is displayed in an upright position.

[0034] In addition, at both ends of the fold line 72, L-shaped notches 611 are provided that are cut inward from both ends of the lower cover panel 61. Therefore, when the lower cover surface insertion piece 62 is folded 90° normal to the lower cover panel 61 at the fold line 72, a protruding piece 612 protruding from the lower cover panel 61 appears, and a gap G22 is formed between the protruding piece 612 and the lower cover surface insertion piece 62 (see, for example, FIG. 5).

[0035] Flaps 63, 64 serving as second flaps are extended from the lower ends of the side panels 23, 25. The side panel 23 and the flap 63 are separated by a fold line 73 extending in the horizontal direction, and the side panel 25 and the flap 64 are separated by a fold line 74 extending in the horizontal direction.

[0036] The lower cover panel 61, the lower cover surface insertion piece 62, and the pair of flaps 63, 64 constitute a lower cover body 60 serving as a second cover body that closes the lower opening of the packaging box 1.

[0037] The above describes the configuration of the box-body forming pieces 10. Next, a method for assembling the box-body forming pieces 10 to form the packaging box 1 will be described.

[0038] First, as shown in Fig. 2, the box-body forming piece 10 is turned over, the back panel 22 is folded 180° along the fold line 32, and glue B is applied to the glued area 227. Next, as shown in Fig. 3, the side panel 25 is folded 180° along the fold line 34, and the back surface of the glued piece 26 is joined (glued) to the front surface of the back panel 22. With the above steps, the box-body forming piece 10 is folded into a folded state. However, the procedure for bringing the box-body forming piece 10 into a folded state is not limited to the above procedure.

[0039] Next, as shown in FIG. 4, the folding lines 31, 32, 33, 34, and 35 are folded at 90° in a factory where the contents are stored and packaged to form a rectangular cylinder 11. Next, as shown in FIG. 5, glue B is applied to the surface of the lower cover surface insert piece 62. Next, the flaps 63 and 64 are folded at 90° in the folding lines 73 and 74, the lower cover panel 61 and the lower cover surface insert piece 62 are folded at 90° in the folding lines 71 and 72, respectively, the lower cover surface insert piece 62 is inserted into the back side of the back panel 22, and the surface of the lower cover surface insert piece 62 is joined (glued) to the back side of the sealing portion 22B of the back panel 22. As a result, the lower opening of the cylinder 11 is sealed by the lower cover body 60 as shown in FIG. 6. At this time, attention is paid to the application area of ​​glue B so that the lower cover surface insert piece 62 is not joined to the opening portion 22A of the back panel 22.

[0040] Here, as described above, the notches 611 are formed at both ends of the fold line 72. Therefore, as shown in FIG. 5, when the lower cover surface insert piece 62 is folded forward with respect to the lower cover panel 61, a protruding piece 612 protruding from the lower cover panel 61 appears, and a gap G22 is formed between the protruding piece 612 and the lower cover surface insert piece 62. Then, the flaps 63 and 64 enter the gap G22 and engage with the lower cover surface insert piece 62, so that the lower cover surface insert piece 62 is caught by the flaps 63 and 64, and unintentional opening of the lower cover panel 61 is suppressed. In this way, in the packaging box 1, in addition to gluing, the flaps 63 and 64 are caught by the lower cover surface insert piece 62, which more effectively suppresses unintentional opening of the lower opening.

[0041] Next, as shown in FIG. 7, after the contents are placed in the packaging box 1 from the upper opening of the cylindrical body 11, the upper opening of the cylindrical body 11 is closed with the upper cover body 40 in the same manner as the lower cover body 60. That is, glue B is applied to the surface of the upper cover surface insert piece 42, the flaps 43, 44 are folded 90° along the fold lines 53, 54, the upper cover surface plate 41 and the upper cover surface insert piece 42 are folded 90° along the fold lines 51, 52, respectively, the upper cover surface insert piece 42 is inserted into the back side of the back plate 22, and the surface of the upper cover surface insert piece 42 is joined (glued) to the back side of the sealing portion 22B of the back plate 22. As a result, the upper opening of the cylindrical body 11 is sealed by the upper cover body 40 as shown in FIG. 8. At this time, attention is paid to the application area of ​​glue B so that the upper cover surface insert piece 42 is not joined to the opening portion 22A of the back plate 22.

[0042] Here, as described above, the notches 411 are formed at both ends of the fold line 52. Therefore, as shown in FIG. 9, when the top cover surface insert piece 42 is folded forward relative to the top cover panel 41, a protruding piece 412 protruding from the top cover panel 41 appears, and a gap G21 is formed between the protruding piece 412 and the top cover surface insert piece 42. Then, the flaps 43 and 44 enter the gap G21 and engage with the top cover surface insert piece 42, so that the top cover surface insert piece 42 is hooked onto the flaps 43 and 44, and unintentional opening of the top cover panel 41 is suppressed. In this way, in the packaging box 1, in addition to gluing, the flaps 43 and 44 are hooked onto the top cover surface insert piece 42, which more effectively suppresses unintentional opening of the upper opening.

[0043] In this manner, the packaging box 1 is assembled and the packaging of the contents is completed. When removing the contents from the packaging box 1, the opening piece 261 is pushed in with a finger while being lifted up, as shown by the arrow in Fig. 10. This breaks the breaking line 351, and the adhesive piece 26 (back panel 22) is separated from the side panel 25, and the packaging box 1 is opened. With this configuration, the packaging box 1 can be easily opened.

[0044] Then, as shown in Fig. 11, the opening portion 22A is raised while folding along the fold line 223. In this way, folding along the fold line 223 makes it easier to raise the opening portion 22A. In addition, stress is less likely to be applied to the sealing portion 22B when raising the opening portion 22A, and damage or peeling of the sealing portion 22B can be suppressed. Furthermore, as shown in Fig. 12, the side panel 25 is hooked with a finger and pulled down. This forms a large opening in the packaging box 1 that spans the back panel 22 and the side panel 25.

[0045] In this way, according to the packaging box 1, when opened, the opening portion 22A and the side panel 25 open and close, respectively, and a large opening spanning the back panel 22 and the side panel 25 appears. This makes it easy to put in and take out the contents of the packaging box 1. In particular, since the opening has a three-dimensional shape facing the back panel 22 and the side panel 25, this effect is remarkable. Also, it is possible to make the configuration resealable while suppressing an increase in the area used by the blank sheet.

[0046] In particular, by forming the opening into a three-dimensional shape facing the rear panel 22 side and the side panel 25 side, when thin sheet-like contents are stacked as in this embodiment, as shown in Fig. 13, for example, by holding the contents from the side with the thumb, sliding only the contents located at the top with the index finger and middle finger, and pinching it with both fingers, it is possible to take out only the necessary number of contents. Therefore, it becomes easier to take out the contents. On the other hand, for example, in a configuration in which only the rear panel 22 opens, the above-mentioned method cannot be used, and it is necessary to take out all the contents, remove only the necessary number of sheets, and return the remaining ones to the packaging box 1, which makes it complicated to take out the contents.

[0047] Here, as described above, a pair of notches 224 are formed at both ends of the fold line 223. Therefore, when the tearable portion 22A is folded at the fold line 223, a pair of protruding pieces 225 protruding from the tearable portion 22A appears. The pair of protruding pieces 225 come into contact with the upper cover surface insertion piece 42 and the lower cover surface insertion piece 62, generating a resistance (frictional force), which makes it easier for the tearable portion 22A to maintain a wide open position. Therefore, the wide opening is maintained without the need to support the tearable portion 22A with the hand, and contents can be easily inserted and removed.

[0048] When resealing the packaging box 1 after opening, first, the flaps 44, 64 on both ends of the side panel 25 are inserted into the rear sides of the top cover panel 41 and the bottom cover panel 61, and the side panel 25 is closed, in the opposite manner to the opening. Next, as shown in Fig. 14, the resealing insert piece 21 is inserted into the rear side of the side panel 25 to close the back panel 22. This closes the opening of the packaging box 1, completing the resealing. In this way, by providing the resealing insert piece 21 and making it resealable, the packaging box 1 is made highly convenient.

[0049] As described above, the fold line 31 separating the resealing insert piece 21 and the back panel 22 has cuts 221 at both ends. Therefore, as shown in Fig. 14, when the resealing insert piece 21 is folded forward relative to the back panel 22, a protruding piece 222 protruding from the back panel 22 appears, and gaps G11 and G12 are formed between the protruding piece 222 and the resealing insert piece 21. In the resealed state, the top cover surface insert piece 42 enters the gap G11 and engages with the resealing insert piece 21, and the bottom cover surface insert piece 62 enters the gap G12 and engages with the resealing insert piece 21. This prevents the package from being unintentionally opened again after resealing.

[0050] The above describes the packaging box 1 of this embodiment. As described above, when the mutually orthogonal directions are the horizontal direction (first direction) and the vertical direction (second direction), such packaging box 1 includes a rear panel 22 (first main panel), a side panel 23 (first side panel), a front panel 24 (second main panel), a side panel 25 (second side panel) and an adhesive piece 26 connected in the horizontal direction, and a cylindrical body 11 formed into a cylindrical shape by joining the adhesive piece 26 to the front side of the rear panel 22, and a cylindrical body 12 extending from the upper end (one end in the vertical direction) of the front panel 24. The upper cover body 40 (first cover body) includes an upper cover panel 41 (first cover panel) that closes the upper opening (one end opening) of the cylindrical body 11 and an upper cover surface insertion piece 42 (first insertion piece) that is inserted into the back side of the back panel 22, and a lower cover body 60 (second cover body) that extends to the lower end (other end in the second direction) of the back panel 22 and includes a lower cover panel 61 (second cover panel) that closes the lower opening (other end opening) of the cylindrical body 11 and a lower cover surface insertion piece 62 (second insertion piece) that is inserted into the back side of the back panel 22. The back panel 22 includes a sealing portion 22B located on the side of the side panel 23 and an opening portion 22A located on the side of the side panel 25, and the sealing portion 22B is joined to the upper cover surface insertion piece 42 and the lower cover surface insertion piece 62. Such a packaging box 1 is opened by separating the side panel 25 from the adhesive piece 26, and in the opened state, the opening portion 22A and the side panel 25 open and close. Therefore, a large opening spanning the back panel 22 and the side panel 25 appears, making it easy to put in and take out the contents of the packaging box 1. In particular, since the opening has a three-dimensional shape facing the back panel 22 side and the side panel 25 side, this effect is remarkable.

[0051] As described above, the back panel 22 further has the fold line 223 that extends along the vertical direction and separates the tearable portion 22A from the sealed portion 22B. This configuration makes it easier to open and close the tearable portion 22A when opening the package.

[0052] As described above, the back panel 22 further has a notch 224 that overlaps the fold line 223, opens toward the opening portion 22A, and protrudes toward the sealing portion 22B. Then, by folding the fold line 223, a protruding piece 225 that protrudes from the opening portion 22A and abuts against the upper cover surface insert piece 42 and the lower cover surface insert piece 62 appears. With this configuration, the opening portion 22A can be easily maintained in a wide open position by the resistance (frictional force) generated by the protruding piece 225 abutting against the upper cover surface insert piece 42 and the lower cover surface insert piece 62. Therefore, the wide opening is maintained without the need to support the opening portion 22A with one's hand, and contents can be easily inserted and removed.

[0053] As described above, the packaging box 1 further has a resealing insert piece 21 that is extended from the end of the back panel 22 on the side panel 25 side and overlaps the back side of the side panel 25. This makes the packaging box 1 resealable, improving convenience. In particular, this configuration makes it possible to suppress an increase in the area used for blank sheets due to the addition of a resealing function.

[0054] As described above, the top cover surface insertion piece 42 is inserted into the gap G11 (first gap) formed between the resealing insert piece 21 and the back plate 22 to engage with the resealing insert piece 21, and the bottom cover surface insertion piece 62 is inserted into the gap G12 (second gap) formed between the resealing insert piece 21 and the back plate 22 to engage with the resealing insert piece 21. This prevents the package from being unintentionally reopened after resealing.

[0055] As described above, the adhesive piece 26 has the opening piece 261 that bulges into the side panel 25, and the adhesive piece 26 and the side panel 25 are separated by the break line 351. With this configuration, the packaging box 1 can be opened by hooking a finger on the opening piece 261 and pulling it to break the break line 351. This makes it possible to open the packaging box 1 easily.

[0056] As described above, the width W1 (horizontal length) of the rear panel 22 and the front panel 24 is 80 mm or more, and the width W2 (horizontal length) of the side panels 23, 25 is 30 mm or less. With this configuration, the packaging box 1 is thin (the distance between the rear panel 22 and the front panel 24 is short) and has a flat shape. Therefore, the shape is suitable for stacking and storing thin sheet-like contents such as compresses.

[0057] <Second embodiment> The packaging box 1 according to this embodiment is similar to the packaging box 1 according to the first embodiment described above, except that the opening mechanism is different. Therefore, in the following description, the packaging box 1 according to this embodiment will be described mainly with respect to the differences from the first embodiment described above, and the description of the similar points will be omitted. In addition, in each drawing of this embodiment, the same reference numerals are used for the same configurations as those in the above-mentioned embodiment.

[0058] 15, in the box-forming piece 10 of this embodiment, the glued piece 26 has a zipper J provided on the side panel 25 side of the joint area with the back panel 22. The zipper J has a pair of break lines 262, 263 extending vertically. Of the pair of break lines 262, 263, the break line 263 located on the side panel 25 side also functions as the fold line 35 that separates the glued piece 26 and the side panel 25. Meanwhile, the back panel 22 has a through hole 229 provided in a portion overlapping with the zipper J, through which a finger is inserted when opening the package.

[0059] Such a box-forming piece 10 is assembled in the same manner as in the first embodiment described above, to form the packaging box 1 shown in FIG. 16. Then, the zipper J is removed while breaking the pair of breaking lines 262, 263. As a result, as shown in FIG. 17, the adhesive piece 26 (back panel 22) is separated from the side panel 25, and the packaging box 1 is opened. Then, a finger is hooked into the through hole 229 exposed by removing the zipper J, and the opening portion 22A is raised while folding the fold line 223. Furthermore, a finger is hooked onto the side panel 25 and pulled down. As a result, a large opening spanning the back panel 22 and the side panel 25 is formed.

[0060] As described above, in the packaging box 1 of this embodiment, the adhesive piece 26 has the zipper J extending vertically toward the side panel 25 side from the joint portion with the back panel 22, and the back panel 22 has a through hole 229 formed at a position overlapping with the zipper J. With this configuration, the packaging box 1 can be easily opened.

[0061] The second embodiment as described above can also achieve the same effects as the first embodiment described above.

[0062] <Third embodiment> The packaging box 1 according to this embodiment is similar to the packaging box 1 according to the first embodiment described above, except that the sealing structures of the upper cover 40 and the lower cover 60 are different. Therefore, in the following description, the packaging box 1 according to this embodiment will be described mainly with respect to the differences from the first embodiment described above, and the description of the similar points will be omitted. In addition, in each drawing of this embodiment, the same reference numerals are used for the same configurations as those in the above-mentioned embodiment.

[0063] As shown in FIG. 18, in the box forming piece 10 of this embodiment, the pair of protruding pieces 225 are omitted. In addition, an upper insertion piece 81 is extended from the upper end of the sealing portion 22B of the back panel 22. In addition, a pair of notches 821, 822 extending vertically are formed in the upper end of the sealing portion 22B, and an upper leg portion 83 is formed by these notches 821, 822, which are extended from the lower end of the upper insertion piece 81. The upper leg portion 83 is formed in the back panel 22 and functions as a part of the back panel 22. In addition, the upper insertion piece 81 and the upper leg portion 83 are separated by a fold line 841 extending horizontally, and the upper leg portion 83 and the back panel 22 are separated by a fold line 842 extending horizontally. An insertion hole 85 for inserting the upper insertion piece 81 is formed on the folding line 52 that separates the upper cover surface plate 41 and the upper cover surface insertion piece 42 .

[0064] A lower insertion piece 91 is extended from the lower end of the sealing portion 22B of the back panel 22. A pair of notches 921, 922 extending vertically are formed at the lower end of the sealing portion 22B, and a lower leg 93 is formed extending from the lower end of the lower insertion piece 91 by these notches 921, 922. The lower leg 93 is formed in the back panel 22 and functions as a part of the back panel 22. The lower insertion piece 91 and the lower leg 93 are separated by a fold line 941 extending horizontally, and the lower leg 93 and the back panel 22 are separated by a fold line 942 extending horizontally. An insertion hole 95 for inserting the lower insertion piece 91 is formed on the fold line 72 separating the lower cover panel 61 and the lower cover surface insertion piece 62.

[0065] Such a box-forming piece 10 is assembled in the same procedure as the first embodiment described above until it is folded. Then, in a factory where contents are stored and packaged, the fold lines 31, 32, 33, 34, and 35 are folded 90° to form a rectangular cylinder 11. Next, the flaps 63 and 64 are folded 90° along the fold lines 73 and 74, the lower cover panel 61 and the lower cover surface insert piece 62 are folded 90° along the fold lines 71 and 72, and the lower cover surface insert piece 62 is inserted into the back side of the back panel 22. Next, as shown in FIG. 19, the lower insert piece 91 and the lower leg portion 93 are folded 941 and 942, while the lower insert piece 91 is inserted into the insertion hole 95. As a result of the above, the lower opening of the cylinder 11 is sealed by the lower cover 60. Then, after the contents are placed in the packaging box 1 through the upper opening of the cylindrical body 11, the upper opening of the cylindrical body 11 is closed with the upper lid body 40 in the same manner as the lower lid body 60. With this configuration, the lower opening of the cylindrical body 11 can be sealed without using glue B.

[0066] The third embodiment as described above can also achieve the same effects as the first embodiment described above.

[0067] Although the packaging box of the present invention has been described above based on the illustrated embodiment, the present invention is not limited to the above embodiment. For example, the size, material, shape of each member, etc. of the packaging box can be changed as appropriate. In addition, in the above embodiment, each part is joined by gluing, but the joining method is not particularly limited. In addition, the packaging box may be formed by bonding multiple blank sheets together.

[0068] In the first embodiment described above, the second main panel is the front panel 24, but the orientation of the packaging box 1, i.e., which panel constitutes the front panel, is not particularly limited. In other words, any of the first main panel, first side panel, second main panel, second side panel, first cover panel, and second cover panel may be the front panel. [Explanation of symbols]

[0069] 1...Packaging box, 10...Box forming piece, 11...Cylinder, 21...Resealing insert piece, 22...Back plate, 22A...Opening part, 22B...Sealing part, 221...Notch part, 222...Protruding piece , 223... Crease line, 224... Notch, 225... Protruding piece, 226... Notch, 227... Gluing area, 228... Leg piece, 229... Through hole, 23... Side plate, 24... Front plate, 241...cutout portion, 242...leg piece, 25...side panel, 26...glued piece, 261...opening piece, 262...break line, 263...break line, 31...fold line, 32...fold line, 33...fold line, 34...fold line, 35...fold line, 351...break line, 40...upper cover body, 41...upper cover surface plate, 411...cutout portion, 412...projecting piece, 42...upper cover surface insertion piece, 43...f Wrap, 44...flap, 51...fold line, 52...fold line, 53...fold line, 54...fold line, 60...lower cover body, 61...lower cover surface plate, 611...notch, 612...projecting piece, 62...lower cover surface insert piece, 63...flap, 64...flap, 71...fold line, 72...fold line, 73...fold line, 74...fold line, 81...upper insert piece, 821...notch, 822...notch, 83...upper leg, 841...fold line, 842...fold line, 85...insertion hole, 91...lower insertion piece, 921...notch, 922...notch, 93...lower leg, 941...fold line, 942...fold line, 95...insertion hole, B...glue, G1...gap, G11...gap, G12...gap, G2...gap, G21...gap, G22...gap, J...zipper

Claims

1. When directions perpendicular to each other are defined as a first direction and a second direction, a cylindrical body including a first main panel, a first side panel, a second main panel, a second side panel, and an adhesive piece connected in the first direction, the cylindrical body being formed into a cylindrical shape by joining the adhesive piece to the front side of the first main panel; a first cover body including a first cover plate extending from one end of the second main plate in the second direction and closing an opening on one end side of the cylindrical body, and a first insertion piece inserted into a back side of the first main plate; a second cover body including a second cover panel extending from the other end of the second main panel in the second direction and closing an opening at the other end of the cylindrical body, and a second insertion piece inserted into a back side of the first main panel, The first main panel includes a sealing portion located on the first side panel side and an opening portion located on the second side panel side, the sealing portion being joined to the first insertion piece and the second insertion piece, The packaging box is opened by cutting off the second side panel from the adhesive piece, and in the opened state, the opening portion and the second side panel open and close, respectively.

2. The packaging box according to claim 1 , wherein the first main panel further includes a fold line extending along the second direction and separating the opening portion from the sealing portion.

3. The first main plate further has a notch portion that overlaps the fold line, opens toward the opening portion, and protrudes toward the sealing portion, The packaging box according to claim 2, wherein the folding line is folded to form a protruding piece that protrudes from the opening portion and abuts against the first insertion piece or the second insertion piece.

4. 2. The packaging box according to claim 1, further comprising a resealing insert provided at an end of said first main panel on said second side panel side and overlapping a rear side of said second side panel.

5. the first insert piece is inserted into a first gap formed between the reclosure insert piece and the first main panel and engages with the reclosure insert piece; 5. The packaging box according to claim 4, wherein the second insert piece is inserted into a second gap formed between the resealing insert piece and the first main panel, and engages with the resealing insert piece.

6. The adhesive piece has a tear piece that bulges into the second side panel, 2. The packaging box according to claim 1, wherein the adhesive piece and the second side panel are separated by a break line.

7. the adhesive piece has a zipper extending along the second direction on the second side panel side relative to a joint portion between the adhesive piece and the first main panel, 2. The packaging box according to claim 1, wherein the first main panel has a through hole formed at a position overlapping the zipper.

8. The length of the first main plate and the second main plate in the first direction is 80 mm or more, 2. The packaging box according to claim 1, wherein the first side panel and the second side panel have a length in the first direction of 30 mm or less.

Images