Packaging boxes with cushioning function

Abstract

To make a box more compact by reducing a height while allowing the box to have a sufficient buffering function.SOLUTION: A partition 2 of a box B1 has inner extension plates 21 to 24 and two inner side plates 25, 26, and a part of one of the two inner side plates 25, 26 is formed between a part close to the other and the rest so that the part can be separated from the rest in a substantially V-shape, and the part is separated from one of the inner side panels 25 and 26 and adhered to the other, and the one and the other of the two inner side plates 25 and 26 are connected in a substantially V shape, and a bottom of a vial is supported by the partition 2 within a box body 1, and the vial is held in a suspended state elastically.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a packaging box used for packaging pharmaceuticals and various other articles. In particular, it relates to a packaging box with a buffering function inside the box, which is optimal for individually packaging bottles containing agents such as vials and other liquid agents and tablets, etc., with a buffering function.

Background Art

[0002] A packaging box with such a buffering function has been proposed in Patent Document 1. Patent Document 1 relates to a packaging box with a buffering function that integrally provides a buffering partition inside and protects the contents such as bottles. As shown in FIG. 1 of Patent Document 1, this packaging box includes a substantially rectangular and vertically long outer cylindrical body S1 and a cylindrical accommodating portion S2 disposed inside the outer cylindrical body S1 so as to face each other with a predetermined gap as a buffering partition, and the accommodating portion S2 inside the outer cylindrical body S1 is configured to buffer and hold a fragile content W such as a glass bottle.

[0003] Moreover, this packaging box 1 is composed of a single box body forming piece 12 punched out from a blank sheet such as cardboard. As shown in FIG. 2 of Patent Document 1, the box body forming piece 12 has a first side plate 14, a front plate 16, a second side plate 18, a back plate 20, and a third side plate 62 that are connected in parallel to form the outer cylindrical body, and from the end edge of the back plate 20, a front partition plate 64, a second partition portion 88, a back partition plate 68, and a first partition portion 108 that form the accommodating portion S2 are connected in parallel. As shown in FIGS. 3 - 7 of Patent Document 1, this box body forming piece 12 is sequentially bent and pasted from each part on the accommodating portion S2 side to each part of the outer cylindrical body S1. In this case, in particular, a first pasting portion 84 extending from the front partition plate 64 and the back partition plate 68 is pasted to the back surface of the second side plate 18, a pasting piece 96 extending from one end of the first partition portion 108 is pasted to the back surface of the back plate 20, and a third pasting portion 112 extending from the other end of the first partition portion 108 is pasted to a portion of the front partition plate 64 close to the first side plate 14.

[0004] By folding and gluing the box-forming piece 12 in this manner, the box-forming piece 12 is folded into a flat shape so that it can be assembled into a box. That is, the outer cylindrical body S1 of the box-forming piece 12 can be raised with a single touch, and the storage section S2 is raised inside the outer cylindrical body S1. Furthermore, as a result of this raising, the storage support section 110 is positioned at the lower opening of the storage section S2, crossing between the front partition plate 64 and the rear partition plate 68.

[0005] In this way, the lower opening of the outer cylindrical body S1 is closed by the lower lid piece 44, and in this state, as shown in Figure 1 of Patent Document 1, the contents W, such as a glass bottle, is placed inside the contents section S2. The contents W is held on its sides by the front partition plate 64, the second partition section 88, the rear partition plate 68, and the first partition section 108, and its bottom surface is supported by the contents support section 110. Then, the upper opening of the outer cylindrical body S1 is closed by the upper lid piece 52.

[0006] With this packaging box, even if an impact is applied to the outer surface of the outer cylindrical body S1 from any direction, the storage section S2 does not come into contact with the outer cylindrical body S1, and the flexibility of the storage section S2 itself absorbs the impact, so that a large impact is not transmitted to the storage section S2. In addition, since the storage section S2 is supported from below by the storage section 110, sufficient cushioning effect can be obtained even in normal handling where the packaging box 10 is placed with the lower lid piece 44 side down. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2012-006646 [Overview of the initiative] [Problems that the invention aims to solve]

[0008] Incidentally, in this packaging box, the contents W in the storage section S2 are supported by a contents support section 110 at the lower opening of the storage section S2. As is clear from Figures 2 and 8 of Patent Document 1, this contents support section 110 is formed in a rectangular shape between the front partition plate 64 and the rear partition plate 68, and this contents support section 110 is arranged linearly (in plan view) between the front partition plate 64 and the rear partition plate 68 at the lower opening of the storage section S2. Therefore, contents such as glass bottles are supported by this linear contents support section 110. In order to support relatively heavy contents such as glass bottles with such a linear contents support section 110, the contents support section 110 needs to have a certain degree of strength, and in order to ensure this strength, the rectangular contents support section 110 needs to have a certain length (height) in the vertical direction (height direction). For this reason, it is difficult to compress the height in the case of this packaging box. In other words, in the case of this box, if we try to compress (shorten) the height of the contents support section 110, the strength of the contents support section 110 will decrease, which may cause it to bend during the assembly of the box or reduce its effectiveness as a cushioning function for the contents. Therefore, the height of the contents support section 110 cannot be compressed, and thus the overall height of the box cannot be reduced, making the box more compact.

[0009] The present invention aims to solve these conventional problems by enabling a compact packaging box of this type, which can reduce the height of the box while maintaining sufficient cushioning function even for fragile and relatively heavy contents such as glass bottles. [Means for solving the problem]

[0010] To achieve the above objective, the present invention (1) A packaging box with a cushioning function, comprising a box body for containing a container, having four side panels forming a front panel, a back panel, a left side panel, and a right side panel, and an adhesive piece extending from one side edge of one of the four side panels and bonded to the other side panel to connect the one side panel and the other side panel, a top cover that closes the top opening of the four side panels, and a bottom cover that closes the bottom opening, and a partition integrally installed inside the box body for elastically holding the container, wherein a bottle-shaped container containing a vial is elastically held and contained within the box body by the partition, The aforementioned partition is, The adhesive piece includes an inner extension plate that extends from at least the inner surface of the other side panel along the inner surface of the box body and is fixed to the inner surface of the box body, Two inner side panels are connected to each other and protrude toward the bottom lid from the bottom lid side end of the inner extension plate, from positions corresponding to two mutually adjacent side panels among the four side panels of the box body, It has, A portion of one of the two inner side panels, adjacent to the other, is detachable from the rest in a roughly V-shape, with the portion separated from the inner extension plate, and a cut line and a fold line formed between the portion and the rest, so that the portion is separated from one of the inner side panels and bonded to the other, so that one of the two inner side panels and the other are connected in a roughly V-shape. The aforementioned partition is, A component formed within the box body on the bottom lid side supports the bottom of the container within the box body and elastically holds the container in a suspended state. This is the gist of it.

[0011] Furthermore, this packaging box preferably has the following configuration. (1) The adhesive piece extends along the inner surface of the other side plate as part of the inner extension plate, forming a first extension plate, and the inner extension plate extending from the adhesive piece consists of second, third, and fourth extension plates that extend from the first extension plate along the inner surfaces of four side plates that are sequentially adjacent to the other side plate on the opposite side from the one side plate, and the inner extension plate is formed in a cylindrical shape so as to surround the circumferential surface of the container. In this case, the box may also have an inner top plate that protrudes from the top-side end of the adhesive piece or inner extension plate so as to be held down by the top plate, and which holds down the top of the container inside the box body. (2) A buffer space is interposed between the side panel of the box body and the inner extension panel. In this case, it is desirable that a fixing portion is formed on a part of the third extension plate so as to be bondable to the inner surface of one side plate of the box body corresponding to the third extension plate via a protruding portion that projects toward the inner surface of the one side plate of the box body; a fixing portion is formed on the extension end of the fourth extension plate so as to be bondable to the inner surface of the adhesive piece of the box body; and a pressing portion is formed on the fourth extension plate, arranged in parallel with the fixing portion and extending diagonally toward the inner surface of the adhesive piece; and that each of the fixing portions is bonded to the inner surface of the one side plate and the adhesive piece of the box body, respectively, thereby forming a buffer space between the third extension plate and the one side plate, and between the pressing portion and the adhesive piece. Furthermore, in this case, it is desirable that the first and third extension plates be narrower than the corresponding side panels of the box body, and that a buffer space be formed between the second and fourth extension plates and the corresponding side panels of the box body. Furthermore, in this case, each fixing portion is formed to be bendable via a fold line in each extension plate having the respective fixing portion, and each fold line is formed in a straight line or a substantially hat shape.

[0012] Furthermore, in order to achieve the above objective, the present invention (2) is: A packaging box with a cushioning function, comprising a box body for containing a container, having four side panels forming a front panel, a back panel, a left side panel, and a right side panel, and an adhesive piece extending from one side edge of one of the four side panels and bonded to the other side panel to connect the one side panel and the other side panel, a top cover that closes the top opening of the four side panels, and a bottom cover that closes the bottom opening, and a partition integrally installed inside the box body for elastically holding the container, wherein a bottle-shaped container containing a vial is elastically held and contained within the box body by the partition, The aforementioned partition is, On the adhesive piece, there is at least an inner extension plate that extends along the inner surface of the box body from the inner surface of at least the side plate on the other side and is fixed to the inner surface of the box body, and two inner side plates that are connected to each other at positions corresponding to two adjacent side plates among the four side plates of the box body at the bottom cover side end of the inner extension plate and protrude in the direction of the bottom cover, and has a part of one of the two inner side plates that is close to the other is separably substantially V-shaped with respect to the remaining part, and when the part is separated from the inner extension plate, a cut line and a fold line are formed between the part and the remaining part, and the part is separated from one of the inner side plates and adhered to the other, and one and the other of the two inner side plates are connected in a substantially V shape, The partition is formed on the top cover side in the box body, and presses the top of the container in the box body to elastically hold the container, and the gist is this.

Effect of the Invention

[0013] According to the packaging box with a buffering function of the present invention (1), with the above configuration, even for a fragile and relatively heavy content such as a glass bottle, while maintaining a sufficient buffering function, the height of the box can be reduced, contributing to the compactness of the box, and having a unique and remarkable effect of the present invention.

[0014] According to the packaging box with a buffering function of the present invention (2), with the configuration using the configuration of the present invention (1), by holding the top of the container in the box body and elastically pressing the container, the container can be protected from an external force from the bottom cover side or the top cover side of the box, and having a unique and remarkable effect of the present invention.

Brief Explanation of Drawings

[0015] [Figure 1] A diagram (perspective view) showing the configuration of a packaging box with a buffering function according to the first embodiment of the present invention [Figure 2] A diagram (development view) showing the configuration of a blank sheet before assembling the packaging box [Figure 3] Figure showing the main part of the packaging box ((a) is a plan view of the packaging box with the lid open, viewed from the top opening; (b) is a bottom view of the packaging box with the bottom lid open, viewed from the bottom opening) [Figure 4] Figure showing the main part of the packaging box ((a) is a front view of the packaging box with the front panel cut away, viewed from the front; (b) is a front view of the packaging box with the front panel and the second extension plate of the inner extension plate cut away, viewed from the front) [Figure 5] Figure for explaining the procedure of folding the blank sheet of the packaging box (development view) [Figure 6] Figure showing the accommodation state of the container (vial) packaged in the packaging box inside the packaging box ((a) is a plan view of the packaging box with the lid open, viewed from the top opening; (b) is a front view of the packaging box with the front panel and the second extension plate of the inner extension plate cut away, viewed from the front) [Figure 7] Figure showing the structure of the packaging box with a buffer function according to the second embodiment of the present invention (perspective view) [Figure 8] Figure showing the structure of the blank sheet before assembly of the packaging box (development view) [Figure 9] Figure showing the accommodation state of the container (vial) packaged in the packaging box inside the packaging box (perspective view of the packaging box with the lid open, viewed from the top opening side) [Figure 10] Figure showing the structure of the packaging box with a buffer function according to the third embodiment of the present invention (front view of the packaging box with the front panel and the second extension plate of the inner extension plate cut away, viewed from the front) [Figure 11] Figure showing the structure of the blank sheet before assembly of the packaging box (development view) [Figure 12] Figure showing the structure of the packaging box with a buffer function according to the fourth embodiment of the present invention (perspective view) [Figure 13] Figure showing the structure of the blank sheet before assembly of the packaging box (development view) [Figure 14]The diagram shows the arrangement of the container (drink) packaged in the packaging box inside the packaging box ((a) is a perspective view of the packaging box from the front and below with the opening on the front panel opened, and (b) is a plan view of the packaging box from the top opening with the lid of the packaging box opened). [Modes for carrying out the invention]

[0016] Next, embodiments for carrying out this invention will be described with reference to the figures. Figures 1 to 4 show the first embodiment. Figure 1 shows the configuration of a packaging box B1 with a cushioning function, and Figure 2 shows the configuration of a blank sheet P1 of the packaging box B1 before assembly. Figures 3 and 4 show the configuration of the main parts of the packaging box B1.

[0017] As shown in Figure 1, the cushioning packaging box B1 (hereinafter sometimes referred to as packaging box B1 or box B1) is made of so-called cardboard and has four side panels 11-14 and adhesive pieces 15 that extend from one side edge of one side panel 11 of the four side panels 11-14 and are bonded to the other side panel 14 to connect one side panel 11 and the other side panel 14, a top cover 16 that closes the top opening 10U of the four side panels 11-14 and a bottom cover 17 that closes the bottom opening 10D, and comprises a box body 1 for containing a container and a partition 2 integrally installed inside the box body 1 for elastically holding the container, so that bottle-shaped containers including vials are elastically held and contained inside the box body 1 by the partition 2. Note that packaging box B1 is shown here as being for packaging one vial, specifically for a vial with a diameter of 22 mm, a height of 4 mm, and a capacity of 8 ml. In the following explanation, the container will be referred to as a vial.

[0018] Referring to Figure 2, the four side panels 11-14 of the box body 1 are configured as the front panel 13, back panel 11, left side panel 14, and right side panel 12 of box B1. In this case, the front panel 13 and back panel 11 are both vertically elongated rectangles of the same size, while the left and right side panels 14 and 12 are vertically elongated rectangles of the same size but slightly narrower than the front panel 13 and back panel 11.

[0019] In the case of box B1, one of the four side panels 11-14, side panel 11, is the back panel 11, and the other side panel 14 is the left side panel 14. The adhesive piece 15 extends from the side edge of the back panel 11 that is opposite to the right side panel 12 adjacent to the back panel 11, in this case from the right side edge as viewed from the back panel 11. In this case, the adhesive piece 15 is approximately four-fifths the width of the front panel 13 and the back panel 11, and is formed in a roughly trapezoidal shape. In this way, the outer surface of the adhesive piece 15 and the inner surface of the left side panel 14 are glued together, connecting the back panel 11 and the left side panel 14.

[0020] Referring to Figure 2, the top lid 16 of the box body 1 is connected via fold lines L8 and L6 from each end edge of the four side panels 11-14, in this case the upper edges of the left and right side panels 14 and 12, and a pair of roughly trapezoidal left and right flaps 164 and 163 that can cover a part of the top opening 10U (in this case, about half of the entire top opening 10U), and is connected via fold line L5 from the upper edge of the back panel 11, covering almost the entire top opening 10U (in this case The box has a roughly trapezoidal inner lid 161 that can cover approximately four-fifths of the entire top opening 10U, and a roughly trapezoidal outer lid 162 that can cover the entire top opening 10U and is connected to the upper edge of the front panel 13 via a fold line L7. It consists of so-called four flaps, and the left and right flaps 164, 163, inner lid 161, and outer lid 162 are closed sequentially over the top opening 10U, and the outer lid 162 is glued to the inner lid 161 to seal it. The fold lines L5-L8 of the top lid 16 are formed linearly on the upper edges of the four side panels 11-14, with concave lines extending from the outer side to the inner side of the box B1, allowing each part of the top lid 16 to be guided to tilt toward the top opening 10U.

[0021] Referring to Figure 2, the bottom lid 17 of the box body is connected via fold lines L12 and L10 from each end edge of the four side panels 11-14, in this case the lower edges of the left and right side panels 14 and 12, and a pair of roughly trapezoidal left and right flaps 174 and 173 that can cover a part of the bottom opening 10D (in this case, about half of the entire bottom opening 10D), and is connected via fold line L9 from the lower edge of the back panel 11, covering almost the entire bottom opening 10D (this In this case, it has a roughly trapezoidal inner lid 171 that can cover about four-fifths of the entire bottom opening 10U, and a roughly trapezoidal outer lid 172 that is connected to the lower edge of the front panel 13 via a fold line L11 and can cover the entire bottom opening 10D, and consists of so-called four flaps, and the bottom opening 10D is sealed by sequentially closing the flaps 174, 173, inner lid 171 and outer lid 172 on and inner lid 171, and gluing the outer lid 172 to the inner lid 171. The fold lines L9-L12 of the bottom lid 17 are formed linearly on the lower edges of the four side panels 11-14, with concave lines extending from the outer side to the inner side of the box B1 so that each part of the bottom lid 17 can be guided to tilt toward the bottom opening 10D.

[0022] Furthermore, in the box body 1, as shown in Figure 2, break lines C1 and C2 for opening are formed on the fold line L7 between the outer lid 162 of the top lid 16 and the front panel 13 to which the outer lid 162 is connected, and on the fold line L9 between the inner lid 171 of the bottom lid 17 and the back panel 11 to which the inner lid 171 is connected. In this case, the break line C1 for opening on the top lid 16 is formed by adding a roughly trapezoidal groove-shaped perforation line c1 from the fold line L7 at a position directly below the center of the fold line L7 between the outer lid 162 and the front panel 13, and then adding perforation lines c2 on the fold line L7 from both ends of the groove-shaped perforation line c1 to both ends of the fold line L7. The part enclosed by the groove-shaped perforation line c1 on the upper part of the front panel 13 is hereinafter referred to as the opening T1. In this case, the tear line C2 for opening the bottom cover 17 is formed by creating a roughly trapezoidal groove-shaped perforation line c1 from the fold line L9 at a position directly above the center of the fold line L9 between the inner cover 171 and the back panel 11, and then creating perforation lines c2 on the fold line L9 from both ends of the groove-shaped perforation line c1 to both ends of the fold line L9. The portion of the lower part of the back panel 11 enclosed by the groove-shaped perforation line c1 is hereinafter referred to as the opening T2.

[0023] In this way, the box body 1 is assembled into a roughly rectangular box shape as a whole, with the adhesive piece 15 on the right edge of the back panel 11 and the left side panel 14 glued together, the bottom opening 10D being closed by the various parts of the bottom cover 17 and the top opening 10U being closed by the various parts of the top cover 16.

[0024] The partition 2 has an adhesive piece 15, an inner extension plate 21-24 that extends from at least the inner surface of the other side panel 14 of the box body 1 along the inner surface of the box body 1 and is fixed to the inner surface of the box body 1, and two inner side panels 25, 26 that connect to each other and protrude toward the bottom lid from positions corresponding to two adjacent side panels 12, 11 of the four side panels 11-14 of the box body 1 at the bottom lid end of the inner extension plate 21-24, and one of the two inner side panels 25, 26 A portion adjacent to the other side is separated from the inner extension plate 21-24 so that the portion is separable from the remaining portion in a roughly V-shape, and a cut line 261 and a fold line 262 (see Figure 2) are formed between the portion and the remaining portion, so that the portion of one of the inner side plates 25, 26 is separated from the other inner side plate 25, 26 and bonded to the other, so that one of the two inner side plates 25, 26 and the other are connected in a roughly V-shape. In this way, in box B1, the partition 2 is formed inside the box body 1 on the bottom lid side, supporting the bottom of the vial inside the box body 1 and elastically holding the vial in a suspended state.

[0025] In the case of partition 2, referring to Figure 2, the adhesive piece 15 extends along the inner surface of the other side panel 14 of the box body 1 as part of the inner extension plates 21-24, forming the first extension plate 21. The inner extension plates 21-24 extending from this adhesive piece 15 consist of second, third, and fourth extension plates 22, 23, and 24 that extend along the inner surfaces of the three side panels 13, 12, and 11 that are sequentially adjacent to the other side panel 14 on the opposite side from the side panel 11, and the inner extension plates 21-24 are formed in a cylindrical shape so as to surround the circumferential surface of the vial. In this case, the adhesive piece 15 is formed in a roughly trapezoidal shape along the inner surface of the left side panel 14 as part of the inner extension plates 21-24, forming the first extension plate 21. The second extension plate 22 is connected to the right edge of the first extension plate 21 and is formed in a roughly trapezoidal shape. The third extension plate 23 is connected to the right edge of the second extension plate 22 and formed in a roughly rectangular shape. The fourth extension plate 24 is connected to the right edge of the third extension plate 23 and formed in a roughly rectangular composite shape. Thus, the inner extension plates 21-24 are formed in a rectangular tubular shape with a rectangular cross-section so as to be able to enclose the entire circumferential surface of the vial.

[0026] Furthermore, in the case of partition 2, as shown in Figures 3 and 4, a buffer space 210-240 is interposed between the four side panels 11-14 of the box body 1 and the inner extension panels 21-24. In this case, a fixing portion 232 is formed on a part of the third extension plate 23 so as to be joinable to the inner surface of the one side plate 12 of the box body 1 corresponding to the third extension plate 23, in this case the right side plate 12, via a protruding portion 231 that projects toward the inner surface of the said one side plate 12, i.e., the right side plate 12. In this case, the protruding portion 231 of the third extension plate 23 is formed approximately in the center of the third extension plate 23 in the vertical direction, between one side edge on the second extension plate 22 side, that is, the left edge, and a fold line 231a that is formed in a straight line parallel to and adjacent to this left edge. The fixing portion 232 is formed in a roughly rectangular shape by the aforementioned fold line 231a, a cut line 231b (see Figure 2) extending from the left edge to the other side edge, in this case the right edge, above and below the fold line 231a, and a cut line 231c (see Figure 2) extending between the ends of each cut line 231b on this right edge. A fixing portion 242 is formed at the extension end of the fourth extension plate 24 so as to be joinable to the inner surface of the adhesive piece 15 of the box body 1, and a pressing portion 243 is further formed on the fourth extension plate 24, arranged in parallel with the fixing portion 242 and extending diagonally toward the inner surface of the adhesive piece 15. In this case, the fixing portion 242 is formed as a slightly elongated rectangle via a fold line 242a formed in a straight line parallel to the side edges of the other extension plates 21, 22, and 23 on the approximately lower half in the vertical direction of the extension end of the fourth extension plate 24. The pressing portion 243 is formed as a roughly rectangular shape protruding from the right edge, with the approximately right half of the approximately upper half of the fourth extension plate 24 separated from the approximately lower half and the fixing portion 242 via a fold line 243a in the approximately middle part in the horizontal direction. These fixing portions 232 and 242 are bonded to the right side panel 12 and adhesive piece 15 of the box body 1, i.e., to the inner surfaces of the first extension plate 21, respectively, forming buffer spaces 230 and 210 between the third extension plate 23 and the right side panel 12, and between the pressing portion 243 and the first extension plate 21, respectively. In this case, the first and third extension plates 21 and 23 are narrower than the side panels 14 and 12 of the box body 1 corresponding to these first and third extension plates 21 and 23, in this case the left side panel 14 and the right side panel 12, and buffer spaces 220 and 240 are formed between the second and fourth extension plates 22 and 24 and the side panels 13 and 11 of the box body 1 corresponding to these second and fourth extension plates 22 and 24, in this case the front panel 13 and the back panel 11.

[0027] Thus, the cylindrical inner extension plates 21-24, which are formed inside the box body 1 via buffer spaces 210-240, surround and hold the vial, forming a buffer function that responds to external forces in the front, back, left, and right directions of the box B1.

[0028] In the case of partition 2, the two inner side plates 25 and 26 are connected to each other at the bottom cover ends of the third and fourth extension plates 23 and 24, and are formed to protrude in a roughly trapezoidal shape towards the bottom cover. In one of these two inner side panels 25, 26, in this case, on the inner side panel 26 on the fourth extension panel 24 side, a portion 26A adjacent to the inner side panel 25 on the third extension panel 23 side, in this case, a portion 26A that is approximately two-thirds of the whole, and the remaining portion 26B, in this case, the remaining portion 26B that is approximately one-third of the whole, is separated from the inner extension panels 21-24 so that the portion 26A is separable from the remaining portion 26B in an approximately V-shape, and a long cut line 261 (see Figure 2) is formed linearly in the vertical direction at the top between the portion 26A and the remaining portion 26B, and a short fold line 262 (see Figure 2) is formed diagonally at the bottom so as to coincide with one diagonal of the bottom opening 10D of the box body 1. Then, a portion 26A of the inner side plate 26 on the fourth extension plate 24 side is bonded via adhesive to a portion of the inner side plate 25 on the third extension plate 23 side that is close to the inner side plate 26 on the fourth extension plate 24 side, so that the two inner side plates 25 and 26 are connected in a roughly V-shape.

[0029] Thus, two inner side plates 25 and 26 on the bottom lid side inside the box body 1 support the bottom of the vial, lifting it away from the bottom lid 17 of box B1, and forming a buffer function that responds to the vertical external force on box B1 relative to the vial.

[0030] This box B1 consists of a single blank sheet P1 formed by punching out cardboard. As shown in Figure 2, this blank sheet P1 has the following configuration.

[0031] On one side, a vertically elongated rectangle of a predetermined size, forming the back panel 11 of box B1, is formed as a back panel shape portion 11P. On the left edge of this back panel shape portion 11P, a right side panel shape portion 12P, which is a rectangle with the same length (height) as the back panel shape portion P11 but slightly smaller in width, forming the right side panel 12 of box B1; a front panel shape portion 13P, which is the same size and shape as the back panel shape portion 11P and forms the front panel 13 of box B1; and a left side panel shape portion 14P, which is the same size and shape as the right side panel shape portion 12P and forms the left side panel 14 of box B1, are successively formed via fold lines L1, L2, and L3. Then, an adhesive piece shape portion 15P is formed, which is a trapezoidal adhesive piece 15 with this right side edge as the base, and is continuous with the right edge of the back panel shape portion 11P via fold line L4. Note that each fold line L1-L4 is formed by a concave scribe line from the outer side to the inner side of the blank sheet P1. These adhesive piece-shaped parts 15P, along with the back panel-shaped part 11P, the right side panel-shaped part 12P, the front panel-shaped part 13P, and the left side panel-shaped part 14P, constitute the four side panel-shaped parts 11P-14P.

[0032] An inner lid shape 161P, which forms an inner lid 161 in a trapezoidal shape slightly smaller than the top opening 10U, is continuously formed on the upper edge of the back panel shape 11P via a fold line L5. A flap shape 163P, which forms the right flap 163 in a trapezoidal shape approximately half the size of the top opening, is continuously formed on the upper edge of the right side panel shape 12P via a fold line L6. An outer lid shape 162P, which forms an outer lid 162 in a trapezoidal shape approximately the same size as the top opening, is continuously formed on the upper edge of the front panel shape 13P via a fold line L7. A flap shape 164P, which forms the left flap 164 in a trapezoidal shape approximately the same size as the flap shape 163P, is continuously formed on the upper edge of the left side panel shape 14P via a fold line L8. Each fold line L5-L8 is formed by a concave scribed line from the outer side to the inner side of the blank sheet P1. The inner lid-shaped section 161P, the outer lid-shaped section 162P, and the left and right flap-shaped sections 163P and 164P constitute the canopy-shaped section 16P.

[0033] An inner lid shape 171P, which forms the inner lid 171 in a trapezoidal shape slightly smaller than the bottom opening 10D, is continuously formed at the lower edge of the back panel shape 11P via a fold line L9. A flap shape 173P, which forms the right flap 173 in a trapezoidal shape approximately half the size of the bottom opening, is continuously formed at the lower edge of the right side panel shape 12P via a fold line L10. An outer lid shape 172P, which forms the outer lid 172 in a trapezoidal shape approximately the same size as the bottom opening, is continuously formed at the lower edge of the front panel shape 13 via a fold line L11. A lower flap shape 174P, which forms the left flap 174 in a trapezoidal shape approximately the same size as the flap shape 173P, is continuously formed at the lower edge of the left side panel shape 14P via a fold line L12. Each fold line L9-L12 is formed by a concave scribed line from the outer side to the inner side of the blank sheet P1. The bottom cover portion 17P is formed by the inner cover portion 171P, the outer cover portion 172P, and the left and right flap portions 173P and 174P.

[0034] The adhesive piece-shaped portion 15P forms part of the adhesive piece 15 and the inner extension plates 21-24 (the first extension plate 21), and is connected to the right edge of the back panel-shaped portion 11P via the aforementioned fold line L4, forming an overall shape that is slightly narrower than the left side panel-shaped portion 14P. The second, third, and fourth extension plate-shaped portions 22P, 23P, and 24P, which form the second, third, and fourth extension plates 22, 23, and 24, are formed continuously from this adhesive piece-shaped portion 15P, i.e., the first extension plate-shaped portion 21P. The second extension plate-shaped portion 22P is connected to the right edge of the first extension plate-shaped portion 21P via a fold line L13, forming an overall shape that is slightly narrower than the width of the front panel-shaped portion 13P. The fold line L13 is formed by a perforation line. The third extension plate-shaped portion 23P is connected to the right edge of the second extension plate-shaped portion 22P via a fold line L14, forming a vertically elongated rectangle with a width slightly smaller than the width of the right side panel-shaped portion 12P. The fold line L14 is formed by short cut lines on the top and bottom of the right edge. A protruding portion 231P and a fixing portion 232P are also formed on this third extension plate-shaped portion 23P approximately in the center in the vertical direction. The protruding portion 231P is formed approximately in the center in the vertical direction of this extension plate-shaped portion 23P, close to one side edge on the second extension plate-shaped portion 22P side, i.e., the left edge, and a fold line 231a is attached parallel to this left edge, forming a vertically elongated rectangle between the left edge and the fold line 231a. The fixing portion 232P is formed by creating notches 231b above and below the fold line 231a of the protruding portion 231P, from the left edge to the other side edge of the third extension plate portion 23P, in this case the right edge, and creating notches 231c between the ends of each notch 231b on this right edge, thereby cutting out a roughly rectangular shape horizontally using these fold lines 231a and the notches 231b and 231c. The fourth extension plate portion 24P is connected to the right edge of the third extension plate portion 23P via a fold line L15 and formed into a composite shape that approximates a roughly square with a width slightly smaller than the width of the back plate portion 11P. The fold line L15 is formed by short notches above and below the right edge. The fixing portion 242P and the pressing portion 243P are also provided on the right edge side of this fourth extension plate portion 24P.The fixing part 242P is connected to the extension end of the fourth extension plate shaped part 24P, in this case to the lower half of the right edge, via a fold line L16, forming a slightly elongated rectangle. The fold line L16 is formed by straight perforations parallel to the side edges of each extension plate shaped part 21P, 22P, 23P, and 24P. The presser part 243P is formed by the right half of the fourth extension plate 24P being separated from the lower half and the fixing part 242P via a fold line L17 at the approximate midpoint in the left-right direction of the upper half of the plate, and protruding from the right edge to form a roughly rectangle. The fold line L17 is formed by cut lines parallel to the side edges of each extension plate shaped part 21P, 22P, 23P, and 24P. These first, second, third, and fourth extension plate-shaped sections 21P, 22P, 23P, and 24P constitute the inner extension plate-shaped section 21P-24P.

[0035] Two inner side plate shapes 25P and 26P are formed continuously from the third and fourth extension plate shapes 23P and 24P of the inner extension plate shapes 21P-24P, forming two inner side plates 25 and 26. These two side plate shapes 25P and 26P are connected to the bottom lid ends of the third and fourth extension plate shapes 23P and 24P, i.e., the lower edges, via fold lines L18 and L19. Each inner side plate shape 25P and 26P is connected to the others and is formed to protrude in a roughly trapezoidal shape towards the bottom lid. Fold line L18 is formed by a crease line. Fold line L19 is formed by a cut line. In this case, fold line L19 is formed only between the fourth extension plate shape 24P and the remaining portion 26B of the inner side plate shape 26P, which will be described later. Between these inner side plate shapes 25P and 26P, a fold line L20 is formed on the extension of the fold line L15 of the fourth extension plate shape 24P. The fold line L20 is formed by a crease. In the inner side plate shape 26P on the side of the fourth extension plate shape 24P, a cut line 190 is formed between the fourth extension plate shape 24P and the part 26A adjacent to the inner side plate shape 25P on the side of the third extension plate shape 23P, in this case, approximately two-thirds of the left side of the part 26A, and between the fold line L18 and the fold line L19, so that the part 26A adjacent to the inner side plate shape 25P on the side of the third extension plate shape 23P can be separated in a roughly V shape from the remaining part 26B, in this case, approximately one-third of the remaining part 26B on the right side. The inner extension plate-shaped section 21P-24P is separated, and between the part 26A and the remaining part 26B, a long cut line 261 is formed linearly on the upper side, extending downward from the end of the cut line 190 (right end in Figure 2), and a short fold line 262 is formed diagonally on the lower side, extending from near the lower end of the upper cut line 261 to the lower corner of the remaining part 26B (lower right corner in Figure 2), so as to coincide with one diagonal of the bottom opening 10D of the assembled box body 1. In this case, the fold line 262 is formed by the cut line.

[0036] As shown in Figure 5, the blank sheet P1 is folded into a flat shape so that it can be assembled into box B1. The inner extension plate shapes 21P-24P are glued together with the two inner side plate shapes 25P and 26P, and the spaces between the inner side plate shapes 25P and 26P, and the spaces between the first and fourth extension plate shapes 21P and 24P are glued together. The four side plate shapes 11P-14P are folded together, and the spaces between the right side plate shape 12P and the third extension plate shape 23P, and the spaces between the adhesive piece shape 15P and the left side plate shape 14P are glued together.

[0037] In this case, first, the inner extension plate sections 21P-24P are folded together with the two inner side plate sections 25P and 26P along the fold lines L15 and L20 between the third and fourth extension plate sections 23P and 24P, and between the two inner side plate sections 25P and 26P, respectively, and the inner surfaces of a portion 26A of the inner side plate section 26P on the fourth extension plate section 24P side and the inner surfaces of a portion 25A of the inner side plate section 25P on the third extension plate section 23P side that is close to the inner side plate section 26P on the fourth extension plate section 24P side are bonded and fixed together with adhesive. As a result, the two inner side plate sections 25P and 26P are superimposed and their portions 25A and 26A are bonded and fixed together. Next, the fold line L13 between the first and second extension plate shapes 21P and 22P is folded in a mountain fold, and the second, third, and fourth extension plate shapes 22P, 23P, and 24P are folded into the inner surface of the first extension plate shape 21P and the back plate shape 11P, and the outer surface of the fixing part shape 242P of the fourth extension plate shape 24P and the inner surface of the adhesive piece shape 15P (first extension plate shape 21P) are bonded together via adhesive. As a result, the fourth extension plate shape 24P and the adhesive piece shape 15P are connected, and the second, third, and fourth extension plate shapes 22P, 23P, and 24P are superimposed on the inner surfaces of the first extension plate shape 21P and the back plate shape 11P. Furthermore, the first extension plate shape 21P and back plate shape 11P, which are formed by overlapping the second, third, and fourth extension plate shapes 22P, 23P, and 24P, are folded along the fold line L1 between the back plate shape 11P and the right side plate shape 12P, and then folded and overlapped onto the inner surfaces of the right side plate shape 12P and the front plate shape 13P. The outer surface of the fixing part shape 232P of the third extension plate shape 23P and the inner surface of the right side plate shape 12P are then bonded and fixed together via adhesive. As a result, the inner extension plate shapes 21P-24P are completely folded onto the inner surfaces of the four side plate shapes 11P-14P. Then, the fold line L3 between the front panel shape section 13P and the left side panel shape section 14P is folded in a mountain fold, and the left side panel shape section 14P is folded onto the adhesive piece shape section 15P, and the inner surface of the left side panel shape section 14P and the outer surface of the adhesive piece shape section 15P are bonded and fixed together with adhesive. In this way, the four side panel shapes sections 11P-14P are connected. Thus, the four side panel shapes sections 11P-14P are folded into a box shape (box body 1), the inner extension panel shapes sections 21P-24P are folded into a cylindrical shape, and the two inner side panel shapes sections 25P and 26P are folded so that they can be raised, and the two inner side panel shapes sections 25P and 26P can be separated into a roughly V shape.

[0038] From the folded blank sheet P1 in this manner, simply by applying pressure to the fold line L3 between the front panel shape section 13P and the left side panel shape section 14P, and the fold line L1 between the back panel shape section 11P and the right side panel shape section 12P, the four side panel shapes 11P-14P are raised into a box shape, the inner extension panel shapes 21P-24P are raised into a cylindrical shape, and the two inner side panel shapes 25P and 26P are separated into a roughly V shape, thereby assembling the box body 1, and a partition 2 is integrally assembled inside the box body 1 from the middle in the vertical direction towards the bottom lid.

[0039] In this case, the four side panel sections 11P-14P are folded at approximately 90° between each side panel section 11P, 12P, 13P, and 14P by folding along the respective fold lines L1, L2, and L3, and assembled into a box body 1 with a roughly rectangular cross-section. The inner extension plate shapes 21P-24P are formed by folding the adhesive piece shape 15P at approximately 90° relative to the back plate shape 11P along the fold line L4 between them, the second extension plate shape 22P at approximately 90° relative to the first extension plate shape 21P along the fold line L13 between them, the third extension plate shape 23P at approximately 90° relative to the second extension plate shape 22P along the fold line L14 between them, and the fourth extension plate shape 24P at approximately 90° relative to the third extension plate shape 23P along the fold line L15 between them. At the same time, the third extension plate-shaped part 23P is folded at approximately 90° between the protruding part 231P and the fixing part 232P along the fold line 231a, and the fourth extension plate-shaped part 24P is folded at approximately 90° between the fixing part 242P and the fold line 242a. The retaining part 243P extending from the fourth extension plate-shaped part 24P is folded at an obtuse angle more than 90° relative to the extension plate-shaped part 24P along the fold line 243a. Thus, the inner extension plate-shaped parts 21P-24P are assembled into a cylindrical shape with a square cross-section as part of the partition 2 within the box body 1.

[0040] At the same time, the two inner side plate shapes 25P and 26P are folded at an obtuse angle less than 90° by mountain folds along fold lines L18 and L19 with respect to the third and fourth extension plate shapes 23P and 24P, respectively, and a part 26A of the inner side plate shape 26P on the fourth extension plate shape 24P side is folded at approximately 180° by mountain folds along fold line L20 between the two inner side plate shapes 25P and 26P with respect to the inner side plate shape 25P on the third extension plate shape 23P side, and a part 26A of the inner side plate shape 26P on the fourth extension plate shape 24P side and the remaining part 26B of the inner side plate shape 26P on the fourth extension plate shape 24P side are folded at an acute angle less than 90° by valley folds along fold line 262 between them. Thus, the two inner side panel sections 25P and 26P are assembled in a roughly V-shape below the inner extension plates 21-24.

[0041] Then, the bottom opening 10D is closed by the various parts of the bottom cover section 17P, and the top opening 10U is closed by the various parts of the top cover section 16P, so that the whole is assembled into a box B1 that is roughly rectangular in shape.

[0042] Along with the assembly process of box B1, vials are placed inside box B1 and packaged.

[0043] In this box B1, the partition 2 is formed within the box body 1 from the middle in the vertical direction towards the bottom lid, supporting the bottom along with the periphery of the vial within the box body 1, and elastically holding the vial in a suspended state.

[0044] Figure 6 shows the arrangement of the vials packaged in box B1 within box B1. As shown in Figure 6, within the box B1, the vial is supported on each of the cylindrical inner extension plates 21-24, and is elastically held between the inner extension plates 21-24 and the four side plates 11-14 of the box body 1 via buffer spaces 210-240. Additionally, the bottom of the vial is supported on the upper part of two inner side plates 25 and 26, which are roughly V-shaped, and is elastically held between the bottom of the vial and the bottom lid 17 of the box B1 via buffer space 170.

[0045] Thus, in this box B1, as shown in Figure 6(a), the vial is housed in cylindrical inner extension plates 21-24 inside the box B1, and the circumferential surface of the vial is supported in contact with each extension plate 22, 23, 24 and the retaining portion 243 within the cylindrical inner extension plates 21-24 via the buffer space 210-240 inside the box B1. Even if a strong external force is applied from the outer circumferential direction of the box B1, the inner extension plates 21-24 that receive the external force will flex within the buffer space 210-240, thereby absorbing even a strong impact. This protects the vial from strong external forces in the outer circumferential direction. In this case, as shown in Figure 6(b), the vial rests on top of two inner side plates 25 and 26 arranged in a roughly V-shape, with the tips (lower ends) of these inner side plates 25 and 26 being in contact with the inner surface of the bottom lid 17 of box B1, allowing them to expand and contract vertically. The vial is supported on these two roughly V-shaped inner side plates 25 and 26, and even if a strong external force is applied to box B1 in the vertical direction, the expansion and contraction of each inner side plate 25 and 26 between the bottom of the vial and the bottom lid 17 of box B1 absorbs even strong impacts. As a result, the vial is protected from strong external forces in the vertical direction. Therefore, even if box B1 is subjected to an impact, the vial inside box B1 is protected without being damaged.

[0046] Furthermore, in this packaging box B1, a break line C1 consisting of perforations is formed in a trapezoidal shape from the fold line L7 downwards on the upper part of the front panel 13. When opening box B1, the top lid 16 can be opened by pressing and breaking the opening T1 in the area enclosed by this break line C1. By pressing a finger against the opening T1 that is separated from the upper part of the front panel 13 as a result of this opening, the top opening 10U of box B1 can be opened by pulling the outer lid 162 upwards together with the inner lid 161. In addition, a break line C2 consisting of perforations is formed in a trapezoidal shape from the fold line L9 upwards on the lower part of the back panel 11. When disposing of box B1, the bottom lid 17 can be opened by pressing and breaking the opening T2 in the area enclosed by this break line C2, making it easier to dismantle box B1. By pressing your fingers against the opening T2, which is separated from the bottom of the back panel 11 when the bottom lid 17 is opened, and pulling down the outer lid 172 together with the inner lid 171, you can open the bottom opening 10D of the box B1 and easily fold the box B1.

[0047] As explained above, in this packaging box B1, the partition 2 integrally installed inside the box body 1 has an inner extension plate 21-24 that extends from the inner surface of the left side panel 14, which is adhered to the adhesive piece 15 of the box body 1, along the inner surfaces of the front panel 13, right side panel 12, and back panel 11 of the box body 1 and fixed to the inner surface of the box body 1, and two inner side panels 25, 26 that are connected to each other and protrude toward the bottom lid from positions corresponding to the mutually adjacent right side panel 12 and back panel 11 of the four side panels 11-14 of the box body 1 at the bottom lid side end of the inner extension plate 21-24, and between the part 2 26A of one of these two inner side panels 25, 26 on the back panel 11 side that is close to the other on the right side panel 12 side and the remaining part 2 2 6A is detachable in a roughly V-shape from the remaining portion 26B, with the portion 26A separated from the inner extension plates 21-24, and a cut line 261 and a fold line 262 formed between the portion 26A and the remaining portion 26B. The portion 26A is separated from one inner side plate 26 on the back plate 11 side and bonded to the other inner side plate 25 on the right side plate 12 side, and one of the two inner side plates 25, 26 on the back plate 11 side and the other on the right side plate 12 side are connected in a roughly V-shape. This is formed to be expandable and contractible towards the bottom lid side within the box body 1, supporting the bottom of the vial within the box body 1 and elastically holding the vial suspended in mid-air, thereby reliably protecting the vial from impacts from outside the box B1. Furthermore, the partition 2 of box B1, particularly the two inner side panels 25 and 26, only need to be assembled in a roughly V-shape between the bottom of the vial and the bottom lid 17 within box B1 and be expandable and contractible. Therefore, the height between the bottom of the vial and the bottom lid 17 can be arbitrarily adjusted according to the height and size of box B, and even with smaller vials, the height of box B1 can be reduced to accommodate a more compact box B1. For example, it can accommodate a vial with a diameter of 15 mm, a height of 38 mm, and a capacity of 3 ml.

[0048] Figures 7 and 8 show the second embodiment. Figure 7 shows the configuration of a cushioning packaging box B2, and Figure 8 shows the configuration of a blank sheet P2 of the same packaging box B2 before assembly. This packaging box B2 has a configuration that is generally the same as the first embodiment, and a part of the partition 2 has a configuration that differs from the first embodiment. Therefore, in the description of this embodiment, common components with the first embodiment will be denoted by the same reference numerals and their redundant explanations will be omitted, while differences from the first embodiment will be denoted by new reference numerals and explained.

[0049] As shown in Figures 7 and 8, this packaging box B2 also has an inner top plate 27 that protrudes from the top-side end of the adhesive piece 15 or inner extension plates 21-24 so as to be held down by the top plate 16, and which holds down the top of the vial inside the box body 1. In this case, the inner top panel 27 (inner top panel shape portion 27P) is formed in a roughly rectangular or trapezoidal shape, in this case roughly rectangular, and is continuous with the top edge of the third extension plate 23 (third extension plate shape portion 23P) of the inner extension plates 21-24 (inner extension plate shape portions 21P-24P), i.e., the upper edge. In this case, a fold line 271 is formed by a crease line slightly above the upper edge of the third extension plate 23 and parallel to this upper edge.

[0050] As a result of this arrangement, as shown in Figure 9, when the top opening 10U is closed by the top cover 16, the inner top plate 27 is pushed down and tilted toward the top opening 10U by the flaps 163, 164, inner cover 161, and outer cover 162 on the top opening 10U side, and this inner top plate 27 presses down on the top of the vial from above. In this way, the top of the vial is pressed down from above by the inner top plate 27, so the top of the vial is elastically held, and in addition to the action of the partition 2 described above, the vial is held more securely within box B2. Therefore, even if box B2 is subjected to impact from above or below, the vial will not rattle as much within box B2 and will be protected more effectively within box B2. Therefore, this packaging box B2 can further enhance the effects and advantages of the first embodiment.

[0051] Figures 10 and 11 show a third embodiment. Figure 10 shows the configuration of a packaging box B3 with a cushioning function, and Figure 11 shows the configuration of a blank sheet P3 of the same packaging box B3 before assembly. This packaging box B3 has a configuration that is generally the same as the first embodiment, and a part of the partition 2 has a configuration that differs from the first embodiment. Therefore, in the description of this embodiment as well, common components with the first embodiment will be given the same reference numerals and their redundant explanations will be omitted, while differences from the first embodiment will be given new reference numerals and described accordingly.

[0052] As shown in Figures 10 and 11, in this packaging box B3, the fixing portion 232 of the third extension plate 23 is formed to be foldable on the third extension plate 23 via a fold line 231H, and this fold line 231H is formed in a substantially hat shape instead of being straight. In this case, the fold line 231H consists of a substantially hat-shaped cut line.

[0053] As a result of this folding line 231H, a protruding portion 231 (protruding portion 231P) is formed on the third extension plate 23 (third extension plate shaped portion 23P) between the fold line 231H, which consists of a roughly hat-shaped cut line running parallel to and adjacent to the left edge, and approximately in the center of the third extension plate 23 (third extension plate shaped portion 23P) in the vertical direction, on one side edge of the second extension plate 22 (second extension plate shaped portion 22P), that is, the left edge, and the fold line 231H, which consists of a roughly hat-shaped cut line running parallel to and adjacent to this left edge. The fixing portion 232 (fixing portion shaped portion 232P) is formed in a roughly rectangular shape by the aforementioned folding line 231H, the cut line 231b that extends from the left edge to the right edge above and below the fold line 231H, and the cut line 231c that extends between the ends of each cut line 231b on the right edge.

[0054] In this way, even if, for example, the box is made smaller and the adhesive surface of the fixing part 232 itself is small, making it difficult to secure a sufficient area for applying glue, the fixing part 232 is expanded, ensuring a sufficient adhesive surface for applying glue.

[0055] Therefore, with this packaging box B3, even if the box B3 is made more compact, the effects and advantages of the first embodiment can be maintained even with a vial that has a diameter of 15 mm, a height of 38 mm, and a capacity of 3 ml. The same applies to the fold line 242a of the fourth extension plate 24, if necessary.

[0056] Figures 12 and 13 show a fourth embodiment. Figure 12 shows the configuration of a cushioning packaging box B4, and Figure 13 shows the configuration of a blank sheet P4 of the same packaging box B4 before assembly. This packaging box B4 has a structure common to the partition 2 of the first, second, and third embodiments, but is used as a cushioning component different from those of the first, second, and third embodiments. Furthermore, this box B4 is exemplified as packaging for a beverage rather than a vial.

[0057] As shown in Figures 12 and 13, this packaging box B4 consists of a single blank sheet P4 formed integrally by punching out cardboard, and the four side panels 41-44 (four side panel shapes 41P-44P) and four side panels 41-44 (four side panel shapes 41P-44P) extend from one side edge of one side panel 41 (one side panel shape 41) and are bonded to the other side panel 44 (the other side panel shape 44P) of the four side panels 41-44 (four side panel shapes 41P-44P). The box body 4 for storing the drink has an adhesive piece 45 (adhesive piece shape 45P) that connects one side panel 41 (one side panel shape part 41) and the other side panel 44 (other side panel shape part 44P), a top cover 46 (top cover shape part 46P) that closes the top opening of the four side panels 41-44 (four side panel shape parts 41P-44P), and a bottom cover 47 (bottom cover shape part 47P) that closes the bottom opening, and a partition 5 integrally installed inside the box body 4 for elastically holding the drink, so that the drink is elastically held and stored inside the box body 4 by the partition 5.

[0058] In the case of this box B4, one of the four side panels 41-44, side panel 41 is the front panel 41, and the other side panel 44 is the right side panel 44. The adhesive piece 45 extends from one side edge of the front panel 41 that is opposite to the left side panel 42 adjacent to this front panel 41, in this case from the right side edge as viewed from the front panel 41. In this case, the adhesive piece 45 is about one-quarter the width of the front panel 41 and the back panel 43, and is formed in a vertically elongated, roughly trapezoidal shape. In this way, the outer surface of the adhesive piece 45 and the inner surface of the right side panel 44 are glued together, and the front panel 41 and the right side panel 44 are connected.

[0059] In this case, each of the four sides 41-44 is formed as a vertically elongated rectangle.

[0060] In the case of this box B4, the top lid 46 (top lid-shaped part 46P) and bottom lid 47 (bottom lid-shaped part 47P) each have a pair of flaps 421, 441, 422, 442 (flap-shaped parts 421P, 441P, 422P, 442P) extending from the upper and lower edges of the left and right side panels 42, 44 (left and right side panel-shaped parts 42P, 44P) of the box B4, and lids 431, 432 (lid-shaped parts 431P, 432P) that have insertable pieces at their ends and extend from the upper and lower edges of the back panel 43 (back panel-shaped part 43P), thus forming a so-called three-flap structure.

[0061] In this case, the flaps 421, 441, 422, and 442 of the top cover 46 and bottom cover 47 are each formed in a roughly trapezoidal shape, the covers 431 and 432 are roughly square, and their insert pieces are formed in a horizontally elongated, rounded-corner strip shape.

[0062] Thus, in box B4, the left and right flaps 421, 441, 422, 442 and lids 431, 432 are sequentially closed at the top and bottom openings, respectively, and the insert pieces of the upper and lower lids 431, 432 are inserted into the inside of the front panel 41, and the insert pieces and the front panel 41 are glued together, so that the whole structure is a vertically elongated rectangular parallelepiped. Alternatively, instead of gluing the insert pieces of the lids 431, 432 of the top lid 46 and bottom lid 47 to the front panel 41, the lids 431, 432 may be glued to the front panel 41 with sealing tape.

[0063] Furthermore, in box B4, a break line 401 is formed in a straight line by perforations along the entire width of the front panel 41 of box B4, slightly above the approximate center in the vertical direction and slightly above the lower edge. This break line 401 extends further to the left side panel 42, where a break line 402 is formed in a roughly U-shape by a zipper wire. In this way, the area enclosed by these break lines 401 and 402 in a roughly U-shape forms an opening 40 that can be opened from the left side panel 42 toward the front panel 41.

[0064] In such box B4, the partition 5 has an adhesive piece 45, an inner extension plate 51-53 (inner extension plate shape portion 51P-53P) that extends from at least the inner surface of the other side plate 44 along the inner surface of the box body 4 and is fixed to the inner surface of the box body 4, and two inner side plates 54, 55 (two inner side plate shape portions 54P, 43P) that are connected to each other and protrude toward the bottom lid from a position corresponding to two adjacent side plates 44, 43 (two side plate shape portions 44P, 43P) of the four side plates 41-44 (four side plate shape portions 41P-44P) of the box body 4. The two inner side plates 54, 55 (two inner side plate shaped portions 54P, 55P) have a portion 55A adjacent to the other and the remaining portion 55B, and the portion 55A is separated from the inner extension plate 51-53 so as to be separated in a substantially V shape from the remaining portion 55B, and a cut line 551 and a fold line 552 are formed between the portion 55A and the remaining portion 55B, and a portion 55A of one of the inner side plates 54, 55 is separated from the other inner side plate 54, 55 and bonded to the other, so that one of the two inner side plates 54, 55 and the other are connected in a substantially V shape.

[0065] In the case of this box B4, the other side panel 44 of box B4 is the right side panel 44, and the partition 5 consists of inner extension plates 51-53, which are continuous with the adhesive piece 45 and consist of a first extension plate 51 that follows the inner surface of the right side panel 44, a second extension plate 52 that follows the inner surface of the back panel 43, and a third extension plate 53 that follows the inner surface of the left side panel 42, and the two inner side panels 54 and 55 are formed as two mutually adjacent side panels out of the four side panels 41-44 of the box body 4, connecting to each other from the lower edges of the first and second extension plates 51 and 52 that correspond to the right side panel 44 and back panel 43, and protruding toward the bottom lid.

[0066] In this case, the first extension plate 51 is formed in a roughly trapezoidal shape, extending from about two-fifths of the upper right edge of the adhesive piece 45, with the combined width of the adhesive piece 45 and the first extension plate 51 being slightly smaller than the width of the right side panel 44. The second extension plate 52 is formed in a roughly rectangular shape, extending from the right edge of the first extension plate 51, with a width approximately the same as the width of the back panel 43. The third extension plate 53 is formed in a roughly trapezoidal shape, extending from the right edge of the second extension plate 52, with a width smaller than the width of the left side panel 42.

[0067] In this case, the two inner side panels 54 and 55 are connected to the lower edges of the first and second extension panels 51 and 52 via fold lines 511 and 521, and the inner side panels 54 and 55 are connected to each other, forming a roughly trapezoidal projection in the direction of the bottom cover. Between these inner side panels 54 and 55, a fold line L55 is formed on the extension of the fold line L52 of the second extension panel 52. The fold line L55 is formed by a crease. Furthermore, in the inner side panel 55 on the second extension plate 52 side, a portion 55A adjacent to the inner side panel 54 on the first extension plate 51 side, in this case approximately half of the left portion 55A of the whole, is separated from the remaining portion 55B, in this case approximately half of the right portion 55B, in a roughly V-shape. A long cut line 551 is formed linearly in the vertical direction on the upper side between the portion 55A and the remaining portion 55B, and a fold line 552 is formed diagonally on the lower side from a position close to the lower end of the cut line 551 on the upper side toward the lower right corner of the inner side panel 55 on the second extension plate 52 side. The fold line 552 is formed by the cut line.

[0068] In this box B4, the partition 5 is formed inside the box body 4 on the lid side 46, and it holds the top of the drink inside the box body 4, elastically retaining the drink.

[0069] Figure 14 shows how the drink packaged in box B4 is contained within box B. As shown in Figure 14, within the box B4, the beverage is placed between two roughly V-shaped inner side panels 54 and 55 and the bottom lid 47. The beverage is supported directly below by the two roughly V-shaped inner side panels 54 and 55 at the top, and is held elastically by the vertical expansion and contraction of the two inner side panels 54 and 55. Therefore, even if an external force is applied to the box B4 in the vertical direction, the expansion and contraction of each inner side panel 54 and 55 between the top of the beverage and the lid 46 of the box B4 absorbs even strong impacts. In this way, the beverage is protected from strong external forces in the vertical direction. Thus, even if the box B4 is subjected to an impact, the beverage inside the box B4 is protected without being damaged. Furthermore, in the process of packaging these beverages into boxes at pharmaceutical companies and other facilities, they are inserted into the boxes through an opening at the bottom using a packaging machine called a cartoner. When inserting the beverage into box B4, it is supported by partitions 5 inside box B4, i.e., two inner side plates 54 and 55. This moderately absorbs the impact that occurs when inserting into box B4 and prevents damage to the beverage cap.

[0070] Furthermore, the box B4 in which the drink is packaged in this manner can be opened by pressing the opening 40 of the front panel 41 of the box B4 with a fingertip from the left end of the left side panel 42, and then separating and pulling up from the left side panel 42 to the front panel 41. This opens a large portion of the left side panel 42 and the front panel 41 of the box B4, allowing the drink to be easily removed from the box B4.

[0071] As explained above, in this packaging box B4, the partition 5 is formed inside the box body 4 on the lid side 46, holding down the top of the drink inside the box body 4 and elastically holding the drink in place, thus protecting the drink from impacts that occur when packaging it in box B4 or after packaging.

[0072] In the embodiments described above, examples were given of packaging pharmaceuticals such as vials and beverages. However, even in boxes packaging fragile and relatively heavy contents such as glass bottles, the same effects and advantages as in the embodiments described above can be achieved by providing dividers 2 and 5, similar to boxes B1-B4. In particular, it is possible to reduce the height of the box while maintaining sufficient cushioning function, contributing to the compactness of the box. [Explanation of Symbols]

[0073] B1 Packaging box with cushioning function (packaging box, box) 1 box 10U Top opening 10D bottom opening 11-14 4 side plates 11 Back plate 12 Right side plate 13 Front plate 14 Left side plate 15 Adhesive strip 16 Canopy 161 Inner lid 162 Outer lid 163 Flap 164 Flap 17 Bottom lid 170 Buffer space 171 Inner lid 172 Outer lid 173 Flap 174 Flap 2 partitions 210, 220, 230, 240 buffer space 21-24 Inner extension plate 21 First extension plate 22 Second extension plate 23 Third extension plate 231 Protruding part 231a Fold line 231b Cut line 231c Cut line 232 Fixed part 24. Fourth extension plate 242 Fixed part 242a Fold line 243 Pressing part 243a Fold line 25 Inner side plate 25A part 26 Inner side plate 261 Cutting line 262 Fold lines 26A part 26B remainder P1 Blank Sheet 11P Back plate shape part 12P Right side plate shape part 13P Front plate shape part 14P Left side plate shape part 15P adhesive piece shape part 161P Inner lid shape 162P Outer lid shape part 163P Flap-shaped section 164P Flap-shaped section 171P Inner lid shape 172P Outer lid shape part 173P Flap-shaped section 174P Flap-shaped section 21P-24P Inner extension plate shape part 21P First extension plate shape 22P Second extension plate shape 23P Third extension plate shape 231P Projection shape part 232P Fixed part shape part 24P Fourth extension plate shape 242P Fixed part shape part 243P Pressing part shape 25P Inner side plate shape part 26P Inner side plate shape part C1 Break Line C2 Break Line B2 Packaging box with cushioning function (packaging box, box) 27 Inner top plate P2 Blank Sheet 27P Inner top plate shape part B3 Packaging box with cushioning function (packaging box, box) P3 Blank Sheet B4 Packaging box with buffer function (packaging box, box) P4 Blank Sheet 4 Boxes 40 Opening mouth 401 Broken Line 402 Broken Line 41-44 4 side plate 41 Front plate 42 Left side plate 421 Flap 422 Flap 43 Back plate 431 Lid 432 Lid 44 Right side plate 441 Flap 442 Flap 45 Adhesive piece 46 Canopy 47 Bottom lid 5 dividers 51-53 Inner extension plate 51 First extension plate 52 Second extension plate 53 Third extension plate 54 Inner side plate 55 Inner side plate 55A part 55B remainder

Claims

1. A packaging box with a cushioning function, comprising a box body for containing a container, having four side panels forming a front panel, a back panel, a left side panel, and a right side panel, and an adhesive piece extending from one side edge of one of the four side panels and bonded to the other side panel to connect the one side panel and the other side panel, a top cover that closes the top opening of the four side panels, and a bottom cover that closes the bottom opening, and a partition integrally installed inside the box body for elastically holding the container, wherein a bottle-shaped container containing a vial is elastically held and contained within the box body by the partition, The aforementioned partition is, The adhesive piece includes an inner extension plate that extends from at least the inner surface of the other side panel along the inner surface of the box body and is fixed to the inner surface of the box body, Two inner side panels are connected to each other and protrude toward the bottom lid from the bottom lid side end of the inner extension plate, from positions corresponding to two mutually adjacent side panels among the four side panels of the box body, It has, A portion of one of the two inner side panels, adjacent to the other, is detachable from the rest in a roughly V-shape, with the portion separated from the inner extension plate, and a cut line and a fold line formed between the portion and the rest, so that the portion is separated from one of the inner side panels and bonded to the other, so that one of the two inner side panels and the other are connected in a roughly V-shape. The aforementioned partition is, A component formed within the box body on the bottom lid side supports the bottom of the container within the box body and elastically holds the container in a suspended state. A packaging box with cushioning properties, characterized by its features.

2. The adhesive piece extends along the inner surface of the other side panel as part of the inner extension plate, forming a first extension plate, and the inner extension plate extending from the adhesive piece consists of second, third, and fourth extension plates that extend from the first extension plate along the inner surfaces of four side panels that are sequentially adjacent to the other side panel on the opposite side from the one side panel, and the inner extension plate is formed in a cylindrical shape so as to surround the circumferential surface of the container, as described in claim 1 for packaging boxes with a cushioning function.

3. A packaging box with a cushioning function according to claim 1 or 2, further comprising an inner top plate that protrudes from the top-side end of an adhesive piece or inner extension plate so as to be pressed down by the top, and which presses down on the top of the container within the box body.

4. A packaging box with a cushioning function according to claim 1 or 2, wherein a cushioning space is interposed between the side panel of the box body and the inner extension panel.

5. A packaging box with a cushioning function according to claim 2, wherein a fixing portion is formed on a part of the third extension plate so as to be bondable to the inner surface of one side plate of the box body corresponding to the third extension plate via a protruding portion that projects toward the inner surface of the one side plate of the box body, a fixing portion is formed on the extension end of the fourth extension plate so as to be bondable to the inner surface of the adhesive piece of the box body, and a pressing portion is formed on the fourth extension plate, arranged in parallel with the fixing portion and extending diagonally toward the inner surface of the adhesive piece, and each of the fixing portions is bonded to the inner surface of the one side plate and the adhesive piece of the box body, respectively, thereby forming a cushioning space between the third extension plate and the one side plate, and between the pressing portion and the adhesive piece, respectively.

6. The packaging box with a cushioning function according to claim 5, wherein the first and third extension plates are narrower than the side panels of the box body corresponding to the first and third extension plates, and a cushioning space is formed between the second and fourth extension plates and the side panels of the box body corresponding to the second and fourth extension plates.

7. Each fixing portion is formed to be foldable via a fold line in each extension plate having each fixing portion, and each fold line is formed in a straight line or in a substantially hat shape, as described in claim 5 for packaging boxes with cushioning function.

8. A packaging box with a cushioning function, comprising a box body for containing a container, having four side panels forming a front panel, a back panel, a left side panel, and a right side panel, and an adhesive piece extending from one side edge of one of the four side panels and bonded to the other side panel to connect the one side panel and the other side panel, a top cover that closes the top opening of the four side panels, and a bottom cover that closes the bottom opening, and a partition integrally installed inside the box body for elastically holding the container, wherein a bottle-shaped container containing a vial is elastically held and contained within the box body by the partition, The aforementioned partition is, The adhesive piece includes an inner extension plate that extends from at least the inner surface of the other side panel along the inner surface of the box body and is fixed to the inner surface of the box body, Two inner side panels are connected to each other and protrude toward the bottom lid from the bottom lid side end of the inner extension plate, from positions corresponding to two mutually adjacent side panels among the four side panels of the box body, It has, A portion of one of the two inner side panels, adjacent to the other, is detachable from the rest in a roughly V-shape, with the portion separated from the inner extension plate, and a cut line and a fold line formed between the portion and the rest, so that the portion is separated from one of the inner side panels and bonded to the other, so that one of the two inner side panels and the other are connected in a roughly V-shape. The aforementioned partition is, A component formed on the top side within the box body, which presses down on the top of the container within the box body and elastically holds the container in place. A packaging box with cushioning properties, characterized by its features.

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