Packing box

Abstract

We provide a packaging box that can be tilted significantly with a simple operation. [Solution] A top plate fracture guide line L1 is formed in the center of the top plate 20 in the front-rear direction, extending between the left and right edges of the left and right upper outer flaps 23 and 24. Left and right inclined fracture guide lines L2 and L2 are formed on the left and right side plates 13 and 14, continuing from both the left and right ends of the top plate fracture guide line L1 and extending to the front edges of the left and right side plates 13 and 14. A front plate fracture guide line L3 is formed on the front side plate 11, extending between the front ends of the left and right inclined fracture guide lines L2 and L2. The stand portion T is provided, which is divided and detachable by these fracture guide lines and has a roughly triangular shape in side view. Cutting guide lines L23 and L24 extend diagonally from the tip edges of the left and right upper outer flaps 23 and 24 to the top plate fracture guide line L1.

Description

Technical Field

[0001] The present invention relates to a packaging box for accommodating a beverage bottle for a water server.

Background Art

[0002] Conventionally, a cardboard packaging box with a stand function has been known (see, for example, Patent Document 1). This packaging box contains a bag filled with a liquid or the like (filled bag), and when the remaining amount of the liquid or the like in the filled bag decreases, an inclined member is arranged on the lower surface of the bottom plate on the side opposite to the mouth plug, so that the box can be inclined toward the mouth plug side.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since the packaging box of Patent Document 1 forms an inclined member by bending an outer flap, the creation of the inclined member is complicated. Further, the packaging box of Patent Document 1 can only incline the box by the thickness of the stacked cardboard, and spillage was likely to occur. In this case, it is also conceivable to arrange the inclined member on the lower surface of the bottom plate in a standing state, but the stability of the inclined member is poor and it is difficult to maintain the inclined state.

[0005] An object of the present invention is to solve the above-described problems and provide a packaging box that can incline the box greatly with a simple operation.

Means for Solving the Problems

[0006] To solve the aforementioned problems, the present invention provides a packaging box for a water server that contains beverage bottles, comprising front and rear side panels, a top plate connected to the upper edges of the front and rear side panels, and a bottom plate connected to the lower edges of the front and rear side panels. The top plate has front and rear upper inner flaps connected to the upper edges of the front and rear side panels, and left and right upper outer flaps connected to the upper edges of the left and right side panels and superimposed on the upper surfaces of the front and rear upper inner flaps. A top plate fracture guide line is formed in the center of the top plate in the front-rear direction, extending between the left and right edges of the left and right upper outer flaps. Left and right inclined fracture guide lines are formed on the left and right side panels, extending diagonally downward and forward from both left and right ends of the top plate fracture guide line to the front edges of the left and right side panels. A front plate fracture guide line is formed on the front side panel, extending between the front ends of the left and right inclined fracture guide lines. Furthermore, the stand portion, which is roughly triangular in side view and is demarcated by the top plate fracture guide line, the left and right inclined fracture guide lines, and the front plate fracture guide line, is detachable from the top plate, the left and right side plates, and the front side plate, and a bending guide line extends diagonally from the tip edge of the left and right upper outer flaps to the top plate fracture guide line.

[0007] In the packaging box of the present invention, the stand section is separated by a top plate breakage guide line, left and right inclined breakage guide lines, and front plate breakage guide line, and positioned below the packaging box, allowing the packaging box to be lifted by the stand section. Since the stand section has a roughly triangular shape in side view, the packaging box can be tilted significantly. Furthermore, because the stand section has a roughly triangular shape in side view, it is possible to stably maintain the tilted state of the packaging box. Furthermore, when cutting open the top plate along the top plate fracture guide line, the tips of the left and right upper outer flaps can be cut open along the top plate fracture guide line while simultaneously being cut off along the cutting guide line, thereby forming a handle portion in the center of the top plate along the top plate fracture guide line. This allows for smooth separation of the stand portion.

[0008] Furthermore, it is preferable that a notch is formed in the center of the left-right direction at the tip of the upper inner flap on the rear side, which can be cut out in a concave shape. When a beverage bottle is contained in a packaging box, if the packaging box is placed on its side with the rear side panel facing downwards, the neck of the beverage bottle can be placed in the recess formed by the notched portion, thus stably holding the beverage bottle even when the packaging box is tilted.

[0009] Furthermore, it is preferable that the left and right inclined fracture guide lines have multiple Y-shaped notches formed at predetermined intervals in the extending direction. This configuration effectively guides the progression of fracture in the inclined direction on the left and right side panels, making it easier to detach the stand. [Effects of the Invention]

[0010] The packaging box of the present invention allows the box to be tilted significantly with a simple operation. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view showing a packaging box according to an embodiment. [Figure 2] This is another diagram showing a blank sheet. [Figure 3] This is a plan view showing the packaging box. [Figure 4] This diagram shows the procedure for detaching the stand section, and is a perspective view showing the tips of the upper outer flaps on the left and right sides opened. [Figure 5] This diagram illustrates the procedure for separating the stand section, and is a perspective view showing the top plate fracture guideline and the left and right inclined fracture guidelines being cut open. [Figure 6] This is a perspective view showing the packaging box with the stand detached. [Figure 7] This is a perspective view showing a horizontally placed packaging box tilted by the stand. [Figure 8]This is a side view showing the packaging box with a larger tilt angle due to a change in the position of the stand. [Modes for carrying out the invention]

[0012] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In the following explanation, the directions of front, back, left, right, up, and down are established for convenience in describing the packaging box and do not limit the configuration or usage of the packaging box.

[0013] As shown in Figure 1, the packaging box 1 of this embodiment is a rectangular parallelepiped in which the vertical length is greater than the front-to-back and left-to-right lengths. The packaging box 1 comprises front, rear, left, and right side plates 11-14, a top plate 20 connected to the upper edges of the front, rear, left, and right side plates 11-14, and a bottom plate 30 connected to the lower edges of the front, rear, left, and right side plates 11-14. The front, rear, left, and right side plates 11-14 constitute a rectangular cylindrical body 10. The packaging box 1 is used as a transport box for transporting beverage bottles B for a water server (see Figure 6, etc., the same applies hereinafter), and as described later, it is also used as a water jug ​​for outdoor use or emergencies when the beverage bottles B are contained inside. The beverage bottles B are pre-filled containers filled with beverage (water in this embodiment). When used as a water jug, the packaging box 1 can be used in an inclined state from a horizontal position. To achieve this, the packaging box 1 is equipped with a stand part T (see Figures 7 and 8) that can be detached from the packaging box 1. The top plate 20 and the body 10 have a top plate fracture guide line L1, a pair of left and right inclined fracture guide lines L2, L2, and a front plate fracture guide line L3 formed therein for separating the stand section T. Details of the stand section T and these fracture guide lines will be described later.

[0014] As shown in Figure 2, the packaging box 1 is formed by folding a blank sheet S1, which is cut from a single sheet of corrugated cardboard, along each crease line (mountain fold or valley fold). The blank sheet S1 shown in Figure 2 is positioned so that the inner side is visible. Each ruled line (broken line) of the blank sheet S1 is a linear groove (pressed ruled line) formed by pressing into the surface of the blank sheet S1. Incidentally, a notch (such as a half-cut line) may be formed in the ruled line. By doing so, it becomes easier to bend the blank sheet S1 at the ruled line.

[0015] As shown in FIG. 1, the body portion 5 includes a pair of front and rear side plates 11, 12 and a pair of left and right side plates 13, 14. The front side plate 11, the rear side plate 12, the left side plate 13, and the right side plate 14 are each a rectangular plate of the same shape. The left side plate 13 is continuously provided at the left edge portion of the front side plate 11 via a ruled line. Also, the right side plate 14 is continuously provided at the right edge portion of the front side plate 11 via a ruled line. Further, the rear side plate 12 is continuously provided at the rear edge portion of the left side plate 13 via a ruled line. Also, a strip-shaped joining piece 15 is continuously provided at the rear edge portion of the right side plate 14 via a ruled line. The joining piece 15 is joined to the inner surface of the rear side plate 12 by an adhesive means such as hot melt.

[0016] When the blank sheet S1 (see FIG. 2) is bent along each ruled line, a rectangular square tube-shaped body portion 10 is formed by the front side plate 11, the rear side plate 12, the left side plate 13, and the right side plate 14. Incidentally, handle portions 17, 17 are formed on the left side plate 13 and the right side plate 14. The handle portions 17, 17 are formed at positions that do not interfere with the body portion of the beverage bottle B housed in the packaging box 1 (see FIG. 6).

[0017] As shown in FIG. 1, the top plate 20 closes the upper opening of the body portion 10. The top plate 20 includes a pair of front and rear upper inner flaps 21, 22 continuously provided at the upper edge portions of the front side plate 11 and the rear side plate 12, and a pair of left and right upper outer flaps 23, 24 continuously provided at the upper edge portions of the left side plate 13 and the right side plate 14. The left and right upper outer flaps 23, 24 are overlapped on the upper surfaces (outer surfaces) of the front and rear upper inner flaps 21, 22 and are partially and efficiently adhered to the front and rear upper inner flaps 21, 22 with an adhesive such as hot melt.

[0018] The front upper inner flap 21 is a rectangular flat plate that extends from the upper edge of the front side plate 11 toward the rear and covers the front half of the upper opening of the body 10. The rear upper inner flap 22 is a rectangular flat plate that extends from the upper edge of the rear side plate 12 toward the front and covers the rear half of the upper opening of the body 10. The tips of the front and rear upper inner flaps 21 and 22 abut against each other at the center of the top plate 20 in the front-rear direction. However, the front and rear upper inner flaps 21 and 22 may be arranged with a predetermined distance between them without their tips abutting against each other.

[0019] As shown in Figures 1 to 3, a notch-forming portion 22a, which is roughly V-shaped in plan view, is formed at the tip of the rear upper inner flap 22. The notch-forming portion 22a is located in the center in the left-right direction at the tip and is demarcated by a fracture guide line L22b. The fracture guide line L22b is a perforated line with intermittently formed cuts. The notch-forming portion 22a can be cut out in a concave shape by the fracture guide line L22b. Two cutting lines L22c, L22c, which extend towards the rear, are connected to the top of the notch-forming portion 22a. The rear ends of the cutting lines L22c, L22c are connected by a bending guide line L22d. The bending guide line L22d is a linear groove (pressed line) formed by pressing the surface of the blank sheet S1. Such a notched portion 22a is cut off by the break guide line L22b when the packaging box 1 is opened, and is set to a size that allows the neck portion N (see Figures 6 to 8, the same applies hereafter) of the beverage bottle B contained in the packaging box 1 to be placed on it when the packaging box 1 is used in a horizontal position. Note that the notched portion 22a is not limited to a roughly V-shape, and various shapes can be adopted as long as it can accommodate the neck portion N of the beverage bottle B.

[0020] The left upper outer flap 23 is a rectangular flat plate that extends to the right from the upper edge of the left plate 13 and covers the left half of the left and right upper inner flaps 21 and 22. The right upper outer flap 24 is a rectangular flat plate that extends to the left from the upper edge of the right plate 14 and covers the right half of the left and right upper inner flaps 21 and 22. The leading edges of the left and right upper outer flaps 23 and 24 abut at the center of the top plate 20 in the left-right direction. This prevents the notched portion 22a of the rear upper inner flap 22 from being exposed on the outer surface of the top plate 20. This contributes to preventing dust from entering the packaging box 1 during transport, etc.

[0021] A top plate fracture guide line L1 is formed in the center of the left and right upper outer flaps 23 and 24 in the front-to-back direction. The top plate fracture guide line L1 is for separating the front side of the left and right upper outer flaps 23 and 24 from the rear side when the stand section T is detached. The top plate fracture guide line L1 is provided parallel to the front and rear edges of the top plate 20 and extends across the entire area between the left and right edges of the left and right upper outer flaps 23 and 24. The top plate fracture guide line L1 is a perforated line with intermittently formed notches. The spacing and shape of the notches in the top plate fracture guide line L1 are not limited. The top plate fracture guide line L1 overlaps vertically with the leading edges (butt joints) of the front and rear upper inner flaps 21 and 22. In other words, when cutting open the left and right upper outer flaps 23 and 24 with your fingers along the fracture guide line L1 of the top plate, it is possible to grasp the tip edge 21b (see Figure 1) of the front upper inner flap 21 together with the flank using it as a gripping point.

[0022] As shown in Figure 3, arc-shaped notches 23a and 24a are formed at the tips of the left and right upper outer flaps 23 and 24. The notches 23a and 24a are in contact with the top plate fracture guide wire L1 and are located on the front side of the top plate fracture guide wire L1. Inside the notches 23a and 24a, the tip 21c of the front upper inner flap 21 is exposed. The tip 21c closes the opening formed by the notches 23a and 24a from the inside.

[0023] Furthermore, cutting guide lines L23 and L24 are formed at the tips of the left and right upper outer flaps 23 and 24. The left cutting guide line L23 extends diagonally from the tip edge 23b of the left upper outer flap 23 to approximately the middle of the top plate fracture guide line L1. The right cutting guide line L24 extends diagonally from the tip edge 24b of the right upper outer flap 24 to approximately the middle of the top plate fracture guide line L1. The cutting guide lines L23 and L24 are perforated lines with intermittent cuts.

[0024] The upper outer flap 23 on the left side has a cut-out section 23h, demarcated by a tip edge 23b, a cutting guide line L23, and a top plate fracture guide line L1. The upper outer flap 24 on the right side has a cut-out section 24h, demarcated by a tip edge 24b, a cutting guide line L24, and a top plate fracture guide line L1. The cut-out sections 23h and 24h are roughly triangular in plan view. When separating the stand section T, these cut-out sections 23h and 24h are separated along the top plate fracture guide line L1 and folded along the cutting guide lines L23 and L24 by pinching the corners 23e and 24e opposite the notches 23a and 24a with your fingers and pulling them upward, causing them to rise from the top plate 20 (see Figure 4). Furthermore, as the cut portions 23h and 24h rise from the top plate 20, the notched portion 22a of the rear upper inner flap 22 is exposed.

[0025] A pair of inclined fracture guide lines L2, L2 are formed on the left plate 13 and the right plate 14. The left and right inclined fracture guide lines L2, L2 are intended to separate the upper front corners of the left plate 13 and the right plate 14, in conjunction with the top plate fracture guide line L1 of the top plate 20, when the stand section T is separated. The inclined fracture guide line L2 of the left plate 13 starts from the left edge of the left upper outer flap 23 (the upper edge of the left plate 13, the left end of the top plate fracture guide line L1) and extends diagonally downward and forward to the front edge of the left plate 13. The inclined fracture guide line L2 of the right plate 14 starts from the right edge of the right upper outer flap 24 (the upper edge of the right plate 14, the right end of the top plate fracture guide line L1) and extends diagonally downward and forward to the front edge of the right plate 14. The inclination angles of the left and right inclined fracture guide lines L2, L2 are the same.

[0026] The left and right inclined fracture guide lines L2, L2 are formed by creating multiple Y-shaped notches at predetermined intervals in the extending direction. The spacing of the notches in the left and right inclined fracture guide lines L2, L2 is not limited.

[0027] The front plate fracture guide line L3 is formed on the front side plate 11. The front plate fracture guide line L3 is intended to separate the upper part of the front side plate 11 in conjunction with the left and right inclined fracture guide lines L2, L2 when separating the stand section T. The front plate fracture guide line L3 is provided parallel to the upper and lower edges of the front side plate 11 and extends across the entire area between the left and right edges of the front side plate 11. The left end of the front plate fracture guide line L3 is continuous with the front end of the left inclined fracture guide line L2. The right end of the front plate fracture guide line L3 is continuous with the front end of the right inclined fracture guide line L2. The front plate fracture guide line L3 is a perforated line with intermittently formed notches. The spacing and shape of the notches in the front plate fracture guide line L3 are not limited.

[0028] The stand section T is separated from the main body of the packaging box 1 by cutting open the top plate fracture guide line L1, the left and right inclined fracture guide lines L2, L2 and the front plate fracture guide line L3. The separated stand section T is a triangular prism shape with one side open, and as shown in Figures 7 and 8, it has a roughly triangular shape when viewed from the side.

[0029] As shown in Figure 1, the bottom plate 30 closes the lower opening of the body 10. The bottom plate 30 comprises a pair of front and rear lower inner flaps 31 and 32 connected to the lower edges of the front side plate 11 and the rear side plate 12, and a pair of left and right lower outer flaps 33 and 34 (see Figure 2) connected to the lower edges of the left side plate 13 and the right side plate 14. The left and right lower outer flaps 33 and 34 are superimposed on the lower (outer) surfaces (not shown) of the front and rear lower inner flaps 31 and 32 and are partially and efficiently bonded to the front and rear lower inner flaps 31 and 32 with an adhesive such as hot melt.

[0030] The front and rear lower inner flaps 31 and 32, and the pair of left and right lower outer flaps 33 and 34 are rectangular flat plates. The front and rear lower inner flaps 31 and 32 abut against each other at the center of the base plate 30 in the front-to-back direction. The front edges of the left and right lower outer flaps 33 and 34 abut against each other at the center of the base plate 30 in the left-to-right direction (not shown).

[0031] Next, referring to Figures 4 to 6, the procedure for opening the packaging box 1 when used as a water jug ​​will be explained. Furthermore, referring to Figures 7 and 8, the inclination of the packaging box 1 using the stand T will be explained. First, as shown in Figure 4, cut out the cut portions 23h and 24h by raising them from the top plate 20 (see Figure 5). In this case, insert your fingers into the notches 23a and 24a of the left and right upper outer flaps 23 and 24, and pinch the corners 23e and 24e of the cut portions 23h and 24h with your fingers. Then, pull up the corners 23e and 24e with your fingers and cut open the cut portions 23h and 24h along the top plate fracture guide line L1. Then, cut out the cut portions 23h and 24h along the cutting guide lines L23 and L24.

[0032] Next, the area behind the exposed notch-forming portion 22a, surrounded by the two cutting lines L22c, L22c, the fracture guide line L22b, and the bending guide line L22d, is pressed in with the fingers to expose the top edge of the notch-forming portion 22a, and this edge is pinched. Then, by pulling it up with the fingers, the fracture guide line L22b is broken and the notch-forming portion 22a is cut out. By cutting out the notch-forming portion 22a, a notch bordered by the fracture guide line L22b is formed in the center of the top plate 20.

[0033] Then, insert your fingers into the notch and grasp the front sides of the left and right upper outer flaps 23 and 24, which serve as gripping points, and the front upper inner flap 21 together with your fingers, and pull upward. As a result, the fracture will progress from the center of the top plate 20 in both left and right directions along the top plate fracture guide line L1, and the front side of the top plate 20 will be separated from the rear side at the top plate fracture guide line L1.

[0034] Subsequently, when the front side of the detached top plate 20 is further pulled up, the fracture progresses from both the left and right ends of the top plate fracture guide line L1 to the inclined fracture guide lines L2, L2 of the left plate 13 and the right plate 14, as shown in Figure 5. As a result, in addition to the front side of the top plate 20, the upper front corners of the left plate 13 and the right plate 14 are separated from the left plate 13 and the right plate 14.

[0035] Then, by cutting open the front plate break guide line L3, which is continuous with the front ends of the left and right inclined break guide lines L2, the stand section T, which is roughly triangular in side view, is separated from the main body of the packaging box 1.

[0036] As shown in Figure 7, when tilting the packaging box 1 with the rear plate 12 facing downwards and placed horizontally on the mounting surface W, the bottom plate 30 side of the packaging box 1 is lifted with the fingers, and the stand part T is placed under the rear plate 12, which forms the bottom. Then, while lifting the cap C of the beverage bottle B with the fingers, the beverage bottle B is pulled out towards the top plate 20, and the neck part N of the beverage bottle B is placed and held in the notched portion (notch) formed by the notched portion 22a of the top plate 20. Figure 7 shows the state in which the stand part T is placed near the bottom plate 30 of the packaging box 1, indicating use when the incline of the packaging box 1 is relatively gentle.

[0037] To increase the incline of the packaging box 1, the stand portion T is moved along the mounting surface W towards the top plate 20, as shown in Figure 8. This shifts the support position of the stand portion T towards the top plate 20, thereby increasing the incline of the packaging box 1. Alternatively, a faucet may be attached to the cap portion C of the beverage bottle B.

[0038] As described above, with the packaging box 1 of this embodiment, the stand portion T is separated by the top plate breakage guide line L1, the left and right inclined breakage guide lines L2, L2 and the front plate breakage guide line L3, and by placing this below the rear side plate 12 which becomes the bottom surface of the packaging box 1 when placed horizontally, the bottom plate 30 side can be lifted by the stand portion T. Furthermore, since the stand portion T has a roughly triangular shape in side view and has height, the packaging box 1 can be tilted significantly. Furthermore, since the stand portion T is roughly triangular in side view, it is possible to stably maintain the inclined state of the packaging box 1.

[0039] Furthermore, when cutting open the top plate 20 along the top plate fracture guide line L1, the tips of the left and right upper outer flaps 23 and 24 are cut open along the top plate fracture guide line L1 while being bent upward along the cutting guide lines L23 and L24, thereby forming a handle portion in the center of the top plate 20 along the top plate fracture guide line L1. This allows for smooth separation of the stand portion T.

[0040] Furthermore, when a beverage bottle B is contained in the packaging box 1, if the packaging box 1 is placed horizontally with the rear plate 12 facing downwards, the neck portion N of the beverage bottle B can be placed on the portion (notch) cut out by the approximately semicircular notch forming portion 22a, so that the beverage bottle B can be held stably even when the packaging box 1 is tilted. In addition, the rear side of the top plate 20 is equipped with a rear upper inner flap 22, which provides high support strength for the neck portion N of the beverage bottle B.

[0041] Furthermore, since the left and right inclined fracture guide lines L2, L2 consist of Y-shaped notches, the progression of fracture in the inclined direction in the left plate 13 and the right plate 14 can be effectively guided, making it easier to detach the stand part T.

[0042] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from its spirit. For example, the size of the stand section T can be appropriately set by changing the formation positions of the left and right inclined fracture guide lines L2, L2 and the front plate fracture guide line L3.

[0043] Although the blank sheet S1 in this embodiment is made of corrugated cardboard, the blank sheet may also be formed from various known types of cardboard with varying strengths. [Explanation of Symbols]

[0044] 1 packaging box 10 Torso 11. Front side panel (front side panel) 12. Rear side panel (rear side panel) 13. Left side panel (left side panel) 14 Right side panel (right side panel) 20 Top plate 21 Upper inner flap (front upper inner flap) 22 Upper inner flap (rear upper inner flap) 22a Notch formation portion 23. Upper outer flap (upper outer flap on the left side) 23a Notch (the leading edge of the upper outer flap on the left side) 24. Upper outer flap (right upper outer flap) 24a Notch (the leading edge of the upper outer flap on the right side) L1 Top plate break guide line L2 Inclined fracture guide wire (left and right fracture guide wires) L3 Front panel fracture guide wire L23 Cutting guide wire (cutting guide wire for the upper outer flap on the left side) L24 Cutting guide wire (cutting guide wire for the upper outer flap on the right side) 30 Bottom plate B Beverage bottle T Stand Section

Claims

1. Front, back, left, and right side panels, A top plate is attached to the upper edges of the front, rear, left, and right side plates, A packaging box for housing beverage bottles for a water server, comprising a bottom plate connected to the lower edges of the front, rear, left, and right side plates, The aforementioned top plate is Front and rear upper inner flaps connected to the upper edges of the front and rear side panels, It has left and right upper outer flaps that are connected to the upper edges of the left and right side plates and overlapped on the upper surfaces of the front and rear upper inner flaps, A fracture guide line is formed in the central part of the top plate in the front-rear direction, extending between the left and right edges of the left and right upper outer flaps. On the left and right side plates, inclined fracture guide lines are formed, extending diagonally downward and forward from both ends of the top plate fracture guide line, and reaching the front edges of the left and right side plates. The front side plate has a front plate fracture guide line that extends between the front ends of the left and right inclined fracture guide lines. The stand section, which is roughly triangular in side view and is demarcated by the top plate fracture guide line, the left and right inclined fracture guide lines, and the front plate fracture guide line, is detachable from the top plate, the left and right side plates, and the front side plate. A packaging box characterized in that cutting guide lines extend diagonally from the tip edges of the left and right upper outer flaps to the top plate breaking guide lines.

2. The packaging box according to claim 1, characterized in that a notch-forming portion that can be cut out in a concave shape is formed in the center in the left-right direction of the tip of the upper inner flap on the rear side.

3. The packaging box according to claim 1 or 2, characterized in that the left and right inclined fracture guide lines are formed by a plurality of Y-shaped cuts spaced at predetermined intervals in the extending direction.

Images