cardboard box

Abstract

To make a corrugated board box reusable as a stocker for temporarily housing other used corrugated board boxes to store after the corrugated board box is used as a box for commodity packing until a time of being recycled.SOLUTION: Approximately trapezoidal overhanging parts 35, 36 overhanging outwardly are formed at a pair of flaps 32, 34, and a corrugated board box 1 is stood so that the flaps 32, 34 become the upside. Boundary lines 35A, 36A between the flaps 32, 34 and the first overhanging part 35 and the second overhanging part 36 are ridge-folded, respectively, and the first overhanging part 35 and the second overhanging part 36 are folded and piled, and bonding hooks 35B, 36B are bonded with through holes 35C, 36C, respectively, to form a stocker 1S in which a horizontal section of a housing part is an approximately parallelogram.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] To provide a cardboard box which can be reused as a stocker for temporarily storing and storing other used cardboard boxes until the cardboard box is recycled after being used as a box for originally packaging products. [Background technology]

[0002] In recent years, the spread of online shopping (also known as online shopping) has led to a large amount of used cardboard boxes being generated even in ordinary households, posing a problem for their disposal. Typically, used cardboard boxes are folded, stacked, and temporarily stored against a wall or other surface until they are ready for recycling. Once a certain number of boxes have been accumulated, they are tied up with plastic string or similar and sent for recycling. However, cardboard boxes vary greatly in size depending on the size of the products they contain, and even cardboard boxes packed with products shipped from the same mail-order company are not standardized in size. Furthermore, cardboard boxes leaned against a wall may collapse in strong winds and scatter around, making it difficult to store used cardboard boxes in a neat and tidy state. Furthermore, even in ordinary households, the process of folding used cardboard boxes, stacking them, and tying them up with plastic string or similar is tedious and labor-intensive.

[0003] Additionally, retailers and other businesses that handle large volumes of cardboard boxed goods every day must fold and stack used cardboard boxes for recycling. However, used cardboard boxes, especially those used to pack a large number of irregularly shaped products such as agricultural produce, are often torn or deformed. Therefore, unlike new cardboard boxes, it is nearly impossible to stack used cardboard boxes tightly together without any gaps, even when folded. Furthermore, because the sizes of cardboard boxes vary depending on the product, it is difficult to fold and stack used cardboard boxes and tie them together with cable ties or plastic string.

[0004] Incidentally, Patent Document 1 proposes a cardboard box with perforations on the side, which can be broken at mass retailers and other stores to divide the cardboard box into two parts, one at the top wall side and one at the bottom wall side, and reused as a storage case for displaying products or as a tray for transporting contents, although the purpose is different from that of the present invention. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2018-65571 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made to solve the problems of the above-mentioned conventional example, and aims to provide a cardboard box that can be reused as a stocker for other used cardboard boxes, so that it can be easily used by ordinary households and businesses that use a large amount of cardboard boxes to temporarily store other used cardboard boxes, and that can be bound together with other used cardboard boxes with vinyl string when recycling, or can be sent for recycling with other used cardboard boxes stored inside. [Means for solving the problem]

[0007] The cardboard box according to the present invention is a cardboard box that is a substantially rectangular parallelepiped when assembled as a box for packaging products, The container has four side surfaces that form side walls, two pairs of outer flaps that are formed continuously from the four side surfaces and form a lid surface and a bottom surface, and two pairs of inner flaps that reinforce the two pairs of outer flaps from the inside, After being used as a box for packaging products, the cardboard box can be reused as a stocker for temporarily storing other used cardboard boxes, a storage section of the stocker having a horizontal cross section of a substantially parallelogram is formed by at least the four side surfaces and a pair of outer flaps and a pair of inner flaps that constitute one of a lid surface or a bottom surface of the two pairs of outer flaps and the two pairs of inner flaps, The bottom surface of the stocker is formed by at least two flaps of the pair of outer flaps and the pair of inner flaps that constitute the other of the lid surface or the bottom surface, among the two pairs of outer flaps and the two pairs of inner flaps. It is characterized by:

[0008] A pair of inner flaps constituting the bottom surface of the stocker may each be formed with a joining portion for joining to the other inner flap.

[0009] Furthermore, a first protruding portion and a second protruding portion each having a substantially trapezoidal shape are additionally formed on the pair of inner flaps so as to protrude outward, and these protruding portions serve as the bottom surface when the cardboard box is used as a stocker, The cardboard box is stood upright with the pair of inner flaps facing up, and the borders between the pair of inner flaps and the first overhang portion and the second overhang portion are mountain-folded, and the first overhang portion and the second overhang portion are folded over each other to form the stocker. It may be configured as follows.

[0010] Furthermore, the connecting portion may be formed on the boundary line between the pair of inner flaps and the first and second protrusions, and in the area where the pair of inner flaps overlap, and may be configured to include a first connecting hook and a first through hole, a second connecting hook that is inserted into the first through hole, and a second through hole that is formed in the second connecting hook and into which the first connecting hook is inserted.

[0011] Alternatively, a pair of inner flaps constituting the bottom surface may each be formed with a joining portion for joining to the pair of outer flaps.

[0012] Each of the pair of inner flaps has a substantially trapezoidal shape, The pair of outer flaps have fold lines formed in parallel with the oblique sides of the pair of inner flaps that form the substantially trapezoidal shape, The stocker is formed by standing the cardboard box upright with the pair of inner flaps facing upward, folding a portion of the pair of outer flaps inward along the folding lines, and joining the pair of inner flaps to the pair of outer flaps. It may be configured as follows.

[0013] The connecting portion is formed by third and fourth connecting hooks formed so as to protrude outward from the oblique sides of the pair of inner flaps, on the boundary line between the pair of outer flaps and a pair of side surfaces continuous therewith, and 3 The connecting hook and the 4 The connector may be configured to have a pair of notches formed in a portion facing the coupling hook.

[0014] Alternatively, a pair of outer flaps constituting the bottom surface of the stocker are provided with the other outer flaps. outside The cover may be configured to have a connecting portion formed therein for connecting to the flap.

[0015] a pair of slits that function as the joining portions for joining the pair of outer flaps are formed at the side edges of the overlapping portions of the pair of outer flaps and at approximately the center of the side edges of the pair of outer flaps; The cardboard box is stood upright with the pair of outer flaps facing up, and a pair of inner flaps for reinforcing the pair of outer flaps are mountain-folded along the boundary lines between the pair of outer flaps and a pair of side surfaces that are continuous with the pair of outer flaps, and the inner surfaces of the pair of inner flaps are folded over so that they are in close contact with the inner surfaces of the pair of side surfaces, The pair of outer flaps are folded along the boundary lines of another pair of side surfaces that are continuous with the pair of outer flaps, and the pair of slits are overlapped with each other, and the pair of outer flaps are joined together to form the stocker. It may be configured as follows. [Effects of the Invention]

[0016] As described above, the cardboard box according to the present invention can be reused as a stocker for temporarily storing other used cardboard boxes after being used as a box for packaging products, which makes recycling of used cardboard boxes easier than, for example, storing used cardboard boxes by leaning them against a wall in an ordinary household. Also, by reassembling the cardboard box so that the horizontal cross section of the storage section formed by at least four side surfaces and the inner and outer flaps that make up the lid surface is a substantially parallelogram, it is possible to store larger used cardboard boxes than if the cardboard box were simply reassembled into a rectangular parallelepiped. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a front view showing a folded state of a cardboard box according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view showing the assembled state of the cardboard box according to the first embodiment. [Figure 3] FIG. 10 is a perspective view showing the cardboard box according to the first embodiment reassembled as a stocker for temporarily storing used cardboard boxes. [Figure 4] FIG. 2 is a perspective view showing an example of use of the first embodiment as a stocker for cardboard boxes. [Figure 5] FIG. 10 is a front view showing a folded state of a cardboard box according to a second embodiment of the present invention. [Figure 6] FIG. 10 is a perspective view showing the assembled state of the cardboard box according to the second embodiment. [Figure 7] FIG. 10 is a perspective view showing a state in the middle of reassembly of the cardboard box according to the second embodiment. [Figure 8] FIG. 10 is a perspective view showing the cardboard box according to the second embodiment reassembled as a stocker for temporarily storing used cardboard boxes. [Figure 9] FIG. 10 is a front view showing a folded state of a cardboard box according to a third embodiment of the present invention. [Figure 10] FIG. 11 is a perspective view showing the assembled state of the cardboard box according to the third embodiment. [Figure 11] FIG. 10 is a perspective view showing the cardboard box according to the third embodiment reassembled as a stocker for temporarily storing used cardboard boxes. [Figure 12] FIG. 11 is a perspective view showing an example of use of the third embodiment as a stocker for cardboard boxes. DETAILED DESCRIPTION OF THE INVENTION

[0018] (First embodiment) A cardboard box according to a first embodiment of the present invention will now be described. Fig. 1 shows a cardboard box 1 according to the first embodiment in a folded state, and Fig. 2 shows the cardboard box 1 according to the first embodiment assembled as a box for packaging products. Fig. 3 shows the cardboard box 1 according to the first embodiment reassembled as a stocker 1S for temporarily storing used cardboard boxes, and Fig. 4 shows an example of the cardboard box 1 according to the first embodiment being used as the stocker 1S.

[0019] In ordinary households, used cardboard boxes are folded, stacked, and stored against the wall of a balcony or other location until they are sent for recycling. However, it is difficult to stack and store multiple cardboard boxes of different sizes, and they are prone to falling over when the wind blows. The cardboard box 1 of the present invention can be reused as a storage container for temporarily storing other used cardboard boxes 5 after the cardboard box 1 has been used as a box for packaging products until it is sent for recycling.

[0020] In the following description, for convenience, the side drawn with a solid line in Figure 1 will be referred to as the front side, and the side drawn with a dashed line will be referred to as the back side. Furthermore, the bottom and lid of the assembled cardboard box 1 will depend on the orientation of the trademark 2 and other marks printed on the sidewall, and when the trademark 2 and other marks are not printed, the bottom and lid of the cardboard box 1 will not be particularly limited. Furthermore, when assembled as a box for product packaging, the cardboard box 1 forms an approximately rectangular parallelepiped, and a cube is also included in the category of rectangular parallelepiped. On the other hand, when the cardboard box 1 is reassembled as a stocker 1S, the horizontal cross section of the storage area will be an approximately parallelogram.

[0021] As shown in Fig. 1, cardboard box 1 is composed of four side surfaces 11-14 and a seam 15 that form the side walls, and two pairs of inner flaps 21, 23, 32, and 34 and two pairs of outer flaps 22, 24, 31, and 33 that are formed continuously from the four side surfaces 11-14 and form the lid surface and bottom surface. For convenience, depending on the orientation of trademark 2, inner flaps 21 and 23 will be referred to as lid inner flaps, outer flaps 22 and 24 as lid outer flaps, outer flaps 31 and 33 as bottom outer flaps, and inner flaps 32 and 34 as bottom inner flaps. In Fig. 2, the side of lid outer flaps 22 and 24 will be referred to as the lid surface, and the side of bottom outer flaps 31 and 33 will be referred to as the bottom surface. In the cardboard box 1 according to the first embodiment, on the lid side, like a typical cardboard box, flaps 22, 24 formed continuously from the side surfaces 12, 14 that form the long sides are referred to as outer lid flaps, and flaps 21, 23 formed continuously from the side surfaces 11, 13 that form the short sides are referred to as inner lid flaps. On the other hand, the bottom side has the characteristic features of the first embodiment, which will be described later, so flaps 31, 33 formed continuously from the side surfaces 11, 13 that form the short sides are referred to as outer bottom flaps, and flaps 32, 34 formed continuously from the side surfaces 12, 14 that form the long sides are referred to as inner bottom flaps.

[0022] When the cardboard box 1 shown in FIG. 1 is folded, regardless of the folding direction, the outer lid flaps 22, 24 each overlap only one of the inner lid flaps 21, 23, and the outer bottom flaps 31, 33 each overlap only one of the inner bottom lid flaps 32, 34. In other words, when the cardboard box 1 is folded, one outer flap overlaps only one inner flap. On the other hand, when the cardboard box 1 shown in FIG. 2 is assembled, the outer lid flaps 22, 24 each overlap both the inner lid flaps 21, 23, and the outer bottom flaps 31, 33 each overlap both the inner bottom lid flaps 32, 34. As shown in FIG. 2, the inner lid flaps 21, 23 and the inner bottom flaps 32, 34 reinforce the outer lid flaps 22, 24 and the outer bottom flaps 31, 33 from the inside when the cardboard box 1 is assembled and in use.

[0023] 1 is formed by punching a large piece of cardboard into a predetermined shape using a press or the like, then making valley folds along the boundary line 12A between the second side surface 12 and the third side surface 13 and the boundary line 14A between the fourth side surface 14 and the overlapping margin 15, and bonding the outer surface of the overlapping margin 15 to the inner surface of the first side surface 11. In the first embodiment, the inner bottom flaps 32, 34 are additionally formed with a first and second trapezoidal protrusions 35 and 36 that protrude outward and form the bottom surface when used as a stocker 1S. In addition, a first connecting hook 35B and a first through-hole 35C are formed on the boundary line 35A between the inner bottom flap 32 and the first protrusion 35, and in the area where the inner bottom flaps 32, 34 overlap. Similarly, a second connecting hook 36B for insertion into the first through-hole 35C is formed on the boundary line 36A between the inner bottom flap 34 and the second overhanging portion 36, and at the portion where the inner bottom flap 32 and the outer bottom flap 34 overlap, so as to protrude further outward from the second overhanging portion 36. Furthermore, the second connecting hook 36B is formed with a second through-hole 36C for insertion of the first connecting hook 35B. The first connecting hook 35B, the second connecting hook 36B, the first through-hole 35C, and the second through-hole 36C function as connecting portions for connecting the first overhanging portion 35 of the inner bottom flap 32 and the second overhanging portion 36 of the inner bottom flap 34. Furthermore, as shown in FIG. 2 , when the cardboard box 1 is assembled as a box for packaging products, the first overhanging portion 35 and the second overhanging portion 36 formed on the inner bottom flaps 32, 34 partially overlap, thereby strengthening the bottom surface of the cardboard box 1.

[0024] To reassemble a used cardboard box 1 into a storage container, as shown in FIG. 3 , the cardboard box 1 is stood upright with the outer bottom flaps 31, 33 and the inner bottom flaps 32, 34 facing up. Then, the boundary line 35A between the inner bottom flap 32 and the first overhanging portion 35 and the boundary line 36A between the inner bottom flap 34 and the second overhanging portion 36 are folded back, and the first overhanging portion 35 and the second overhanging portion 36 are folded back together. Next, the first connecting hook 35B is temporarily bent outward to fully open the first through-hole 35C, and the second connecting hook 36B is bent downward and inserted into the first through-hole 35C. Finally, the first connecting hook 35B is bent backward and inserted into the second through-hole 36C. As a result, a storage container 1S is formed, with the first overhanging portion 35 of the inner bottom flap 32 and the second overhanging portion 36 of the inner bottom flap 34 as its bottom. The bottom surface of the assembled stocker 1S is formed by folding the first protruding portion 35 and the second protruding portion 36 together, so that it is roughly hexagonal, but the horizontal cross section of the storage area formed by the side surfaces 11-14, the inner lid flaps 21, 23, the outer lid flaps 22, 24, the outer bottom flaps 31, 33, and the inner bottom flaps 32, 34 is roughly a parallelogram (since the side surfaces 11-14 of a used cardboard box 1 are deformed, it is often not an exact parallelogram). Note that in the following explanation, for convenience, the horizontal cross section of the stocker 1S will be described as a "parallelogram."

[0025] As shown in Figure 4, when stocker 1S is turned upside down with first protruding portion 35 and second protruding portion 36 at the bottom, a space with a parallelogram horizontal cross section is formed inside the storage section formed by side surfaces 11 to 14, inner lid flaps 21, 23, outer lid flaps 22, 24, outer bottom flaps 31, 33, and inner bottom flaps 32, 34, and other used cardboard boxes 5 can be stored therein. When using cardboard box 1 as stocker 1S, by reassembling it so that the horizontal cross section of the storage section is a parallelogram, it is possible to store larger used cardboard boxes 5 than if cardboard box 1 were simply reassembled into a rectangular parallelepiped. As can be seen from Figures 1 to 4, increasing the amount of protrusion of the protrusions 35, 36 (corresponding to the length W of the shorter diagonal of the parallelogram) increases the number of used cardboard boxes that can be stored in the stocker 1S, but it also reduces the maximum dimension of the used cardboard boxes 5 that can be stored (corresponding to the length D of the longer diagonal of the parallelogram). To be usable as a stocker 1S, the cross section of the parallelogram needs to have a certain area and the lengths D and W of the two diagonals. Therefore, the amount of protrusion W of the first and second protrusions 35, 36 can be selected appropriately depending on the size and length of the outer bottom flaps 31, 33 and the inner bottom flaps 32, 34 of the cardboard box 1.

[0026] In the first embodiment, when the cardboard box 1 is reassembled as a stocker 1S, the side walls of the storage section of the stocker 1S are formed by the side surfaces 11-14, the inner lid flaps 21, 23, the outer lid flaps 22, 24, the outer bottom flaps 31, 33, and the inner bottom flaps 32, 34. Therefore, compared to the second or third embodiment described below, the height of the side walls of the storage section of the stocker 1S is higher, allowing for the storage of larger used cardboard boxes 5. Furthermore, with the used cardboard boxes 5 stored in the stocker 1S, the stocker 1S can be transported to a collection site for cardboard boxes, or the stocker 1S can be tied together with the used cardboard boxes 5 with vinyl string. This facilitates the recycling of used cardboard boxes in ordinary households.

[0027] (Second embodiment) Fig. 5 shows a cardboard box 1 according to the second embodiment in a folded state, Fig. 6 shows a cardboard box according to the second embodiment in an assembled state, Fig. 7 shows a cardboard box 1 according to the second embodiment in the middle of being reassembled, and Fig. 8 shows a cardboard box 1 according to the second embodiment in a reassembled state as a stocker 1S for temporarily storing used cardboard boxes. As with the first embodiment, the second embodiment shows an example in which the cardboard box 1 according to the present invention can be reused as a stocker 1S for temporarily storing other used cardboard boxes. In the cardboard box 1 of the second embodiment, as with a general cardboard box, on both the lid side and the bottom side, flaps 22, 24, 32, 34 formed continuously from the sides 12, 14 forming the long sides are outer flaps, and flaps 21, 23, 31, 33 formed continuously from the sides 11, 13 forming the short sides are inner flaps, and parts of the bottom outer flaps 32, 34 are folded inward, and the bottom inner flaps 31, 33 are joined to the bottom outer flaps 32, 34 to form the bottom when reused as a storage container 1S.

[0028] 5 and 6, the inner bottom flaps 31, 33 are each approximately trapezoidal, with a third connecting hook 31N and a fourth connecting hook 33N formed to protrude outward from the oblique sides 31M, 33M of the trapezoid. The outer bottom flaps 32, 34 are formed with folding lines 32L, 34L parallel to the oblique sides 31M, 33M of the inner bottom flaps 31, 33. A notch 32K is formed on the boundary line 32J between the outer bottom flap 32 and the side surface 12, at a portion facing the fourth connecting hook 33N, so as to protrude from the side surface 12 toward the outer bottom flap 32. Similarly, a notch 34K is formed on the boundary line 34J between the outer bottom flap 34 and the side surface 14, at a portion facing the third connecting hook 31N, so as to protrude from the side surface 14 toward the outer bottom flap 34. 5 to 8, right-angled triangular folded portions 32P, 34P folded along the folding lines 32L, 34L of the bottom outer flaps 32, 34 are shown shaded.

[0029] When a used cardboard box 1 is reassembled as a storage container, as shown in Fig. 7, the cardboard box 1 is stood up with the inner bottom flaps 31, 33 and the outer bottom flaps 32, 34 facing up, the folding lines 32L, 34L of the outer bottom flaps 32, 34 are each folded inward, and the folded portions 32P, 34P are inserted inside the side surfaces 13, 14, respectively. Because no folding lines are formed along the boundary lines 32J, 34J at the portions of the notches 32K, 34K, when the outer bottom flaps 32, 34 are folded inward along the boundary lines 32J, 34J, the portions of the notches 32K, 34K become upright, and through-holes 32Q, 34Q are formed in the outer bottom flaps 32, 34.

[0030] Next, as shown in Fig. 8, the inner bottom flaps 31, 33 are mountain-folded along the boundary lines 31J, 33J with the side surfaces 11, 13, respectively, and the connecting hooks 31N, 33N are further mountain-folded along the oblique sides 31M, 33M and inserted into the through-holes 32Q, 34Q of the outer bottom flaps 32, 34. As a result, a stocker 1S is formed with the inner bottom flaps 31, 33 and the outer bottom flaps 32, 34 as its bottom surface. The third connecting hook 31N and fourth connecting hook 33N and the through-holes 32Q, 34Q function as connecting parts for connecting the inner bottom flaps 31, 33 to the outer bottom flaps 32, 34, respectively.

[0031] The stocker 1S in the second embodiment also has a hexagonal bottom, but the horizontal cross section of the storage compartment formed by the side surfaces 11-14, the inner lid flaps 21, 23, and the outer lid flaps 22, 24 is a substantially parallelogram. The length W of the shorter diagonal of the parallelogram is substantially the same as the length of the short sides of the outer bottom flaps 32, 34. Except for the fact that the inner bottom flaps 31, 33 and the outer bottom flaps 32, 34 do not contribute to the side walls of the storage compartment of the stocker 1S, the other features are the same as those of the first embodiment.

[0032] (Third embodiment) Fig. 9 shows a cardboard box 1 according to the third embodiment in a folded state, Fig. 10 shows a cardboard box according to the third embodiment in an assembled state, and Fig. 11 shows a cardboard box 1 according to the third embodiment in a reassembled state as a stocker 1S for temporarily storing used cardboard boxes. Fig. 12 shows an example of using the cardboard box 1 according to the third embodiment as a stocker 1S. As with the first or second embodiment, the third embodiment also shows an example in which the cardboard box 1 according to the present invention can be used as a stocker 1S for temporarily storing other used cardboard boxes. In the cardboard box 1 according to the third embodiment, as with a typical cardboard box, on both the lid and bottom sides, flaps 22, 24, 32, 34 formed continuously from the long sides 12, 14 are outer flaps, and flaps 21, 23, 31, 33 formed continuously from the short sides 11, 13 are inner flaps, and the bottom inner flaps 31, 33 are folded inward and parts of the bottom outer flaps 32, 34 are joined together to form the bottom when used as a storage container 1S.

[0033] As shown in Figures 9 and 10, the outer bottom flaps 32, 34 have slits 32R, 34R formed at the side edges 32S, 34S of the overlapping portions of the outer bottom flaps 32, 34, respectively, and at approximately the center of the side edges 32S, 34S of the outer bottom flaps 32, 34. The width of the slits 32R, 34R is set to be approximately the same as, but slightly larger than, the thickness of the cardboard plate from which the cardboard box 1 is made. The portions of the outer bottom flaps 32, 34 between the slits 32R, 34R and the respective cut edges 32F, 34F are referred to as connecting hooks 32N, 34N. The rest of the configuration is approximately the same as that of the cardboard box 1 of the second embodiment shown in Figure 3, for example.

[0034] When a used cardboard box 1 is reassembled as a storage container, as shown in Fig. 11, the cardboard box 1 is stood up with the inner bottom flaps 31, 33 and the outer bottom flaps 32, 34 facing up, and the inner bottom flaps 31, 33 are mountain-folded along the boundary lines 31J, 33J with the side surfaces 11, 13, respectively, and folded over so that the inner surfaces of the inner bottom flaps 31, 33 are in close contact with the inner surfaces of the side surfaces 11, 13, respectively. In Figs. 23 and 24, the inner bottom flaps 31, 33 folded over on the inside of the side surfaces 13, 14 are shown shaded. Next, the outer bottom flaps 32, 34 are mountain-folded along the boundary lines 32J, 34J, respectively, and the connecting hooks 32N, 34N are bent outward from each other, while the slits 32R of the outer bottom flap 32 and the slits 34R of the outer bottom flap 34 are overlapped to connect the outer bottom flap 32 and the outer bottom flap 34. As a result, a stocker 1S is formed whose bottom surface is made up of the outer bottom flaps 32, 34. The slits 32R, 34R function as joining portions for joining the outer bottom flap 32 and the outer bottom flap 34 together.

[0035] The bottom surface of the stocker 1S in the third embodiment is substantially rectangular, and the cross section of the storage compartment formed by the side surfaces 11-14, the inner lid flaps 21, 23, and the outer lid flaps 22, 24 is substantially parallelogram-shaped. The length W of the shorter diagonal of the parallelogram is substantially the same as the length of the short side of the outer bottom flaps 32, 34. Except for the fact that the inner bottom flaps 31, 33 and the outer bottom flaps 32, 34 do not contribute to the side walls of the storage compartment of the stocker 1S, the other features are the same as those of the first embodiment.

[0036] 12, when reused as a stocker 1S, the bottom surface of the stocker 1S that comes into contact with the floor surface of, for example, the ground or a balcony is generally rectangular, and therefore the contact area is larger than when it is hexagonal as in the first or second embodiment. Therefore, even when storing elongated cardboard boxes in a folded state, for example, the stocker 1S maintains a stable posture, reducing the possibility that a used cardboard box 5 will tip over along with the stocker 1S.

[0037] As explained above, if the cardboard box 1 can be used as a stocker 1S for temporarily storing other used cardboard boxes 5 after being used as a box for packaging products, the storage and subsequent recycling of used cardboard boxes in an ordinary household will be easier than, for example, storing used cardboard boxes by leaning them against a wall or the like. Also, by reassembling the cardboard box 1 so that the horizontal cross section of the storage section formed by at least four side surfaces 11-14, the inner lid flaps 21, 23, and the outer lid flaps 22, 24 is a substantially parallelogram, it will be possible to store and store larger used cardboard boxes 5 than if the cardboard box 1 were simply reassembled into a rectangular parallelepiped.

[0038] In the above embodiments, the bottom surface of the stocker 1S is described as being formed by the bottom inner flaps 31, 33 and / or bottom outer flaps 32, 34. However, as mentioned above, when the trademark 2 or the like is not displayed, the bottom and lid surfaces of the cardboard box 1 are not particularly limited. Therefore, the cardboard box 1 may be turned upside down, and the bottom surface of the stocker 1S may be formed by the lid inner flaps 21, 23 and / or the lid outer flaps 22, 24. Alternatively, so that the user does not have to consider the top and bottom of the used cardboard box 1, the structures shown in the first to third embodiments may be provided on both the bottom inner flaps 31, 33 and / or bottom outer flaps 32, 34 and the lid inner flaps 21, 23 and / or the lid outer flaps 22, 24. [Explanation of symbols]

[0039] 1 cardboard box 2 Trademarks 5. Other used cardboard boxes 11~14 Side 15 Glue margin 21,23 Inner flap of lid 22,24 Outer lid flap 31, 33 Outer bottom flap (first embodiment), inner bottom flap (second and third embodiments) 32, 34 Inner bottom flap (first embodiment), outer bottom flap (second and third embodiments) 31M,33M hypotenuse 31N~34N 3rd and 4th connecting hooks 32F,34F Cut edge 32J,34J border 32K, 34K cut 32L, 34L bending lines 32P, 34P Bending part 32Q,34Q through hole 32R, 34R slit 32S,34S side edge 35,36 1st and 2nd overhang 35A,36A boundary line 35B, 36B 1st and 2nd connecting hooks 35C, 36C 1st, 2nd through hole

Claims

1. A cardboard box that is approximately rectangular when assembled as a box for product packaging, The container has four side surfaces that form side walls, two pairs of outer flaps that are formed continuously from the four side surfaces and form a lid surface and a bottom surface, and two pairs of inner flaps that reinforce the two pairs of outer flaps from the inside, After being used as a box for packaging products, the cardboard box can be reused as a stocker for temporarily storing other used cardboard boxes, a storage section of the stocker having a horizontal cross section of a substantially parallelogram is formed by at least the four side surfaces and a pair of outer flaps and a pair of inner flaps that constitute one of a lid surface or a bottom surface of the two pairs of outer flaps and the two pairs of inner flaps, the bottom surface of the stocker is formed by at least two of the pair of outer flaps and the pair of inner flaps that constitute the other of the lid surface and the bottom surface, A cardboard box characterized by:

2. 2. The cardboard box according to claim 1, wherein each of the pair of inner flaps constituting the bottom surface of the stocker is formed with a joining portion for joining to the other inner flap.

3. A first protruding portion and a second protruding portion each having a substantially trapezoidal shape are additionally formed on the pair of inner flaps so as to protrude outward, and the first protruding portion and the second protruding portion are the bottom surface when the cardboard box is used as a stocker, The cardboard box is stood upright with the pair of inner flaps facing up, and the borders between the pair of inner flaps and the first overhanging portion and the second overhanging portion are mountain-folded, and the first overhanging portion and the second overhanging portion are folded over each other to form the stocker.

3. The cardboard box according to claim 2.

4. 4. The cardboard box according to claim 3, wherein the connecting portion is formed on the boundary between the pair of inner flaps and the first and second protruding portions, and in the portion where the pair of inner flaps overlap, and is provided with a first connecting hook and a first through hole, a second connecting hook that is inserted into the first through hole, and a second through hole formed in the second connecting hook and into which the first connecting hook is inserted.

5. 2. The cardboard box according to claim 1, wherein a pair of inner flaps constituting the bottom surface are each formed with a joining portion for joining to the pair of outer flaps.

6. Each of the pair of inner flaps has a substantially trapezoidal shape, The pair of outer flaps have fold lines formed in parallel with the oblique sides of the pair of inner flaps that form the substantially trapezoidal shape, The stocker is formed by standing the cardboard box upright with the pair of inner flaps facing upward, folding a portion of the pair of outer flaps inward along the folding lines, and joining the pair of inner flaps to the pair of outer flaps.

6. The cardboard box according to claim 5.

7. 7. The cardboard box according to claim 6, wherein the connecting portion comprises third and fourth connecting hooks formed so as to protrude outward from the oblique sides of the pair of inner flaps, and a pair of notches formed on the boundary line between the pair of outer flaps and a pair of side surfaces continuous with the pair of outer flaps, in a portion facing the third and fourth connecting hooks.

8. 2. The cardboard box according to claim 1, wherein each of the pair of outer flaps constituting the bottom surface of the stocker is formed with a joining portion for joining to the other outer flap.

9. a pair of slits that function as the joining portions for joining the pair of outer flaps are formed at the side edges of the overlapping portions of the pair of outer flaps and at approximately the center of the side edges of the pair of outer flaps; The cardboard box is stood upright with the pair of outer flaps facing up, and a pair of inner flaps for reinforcing the pair of outer flaps are mountain-folded along the boundary lines between the pair of outer flaps and a pair of side surfaces that are continuous with the pair of outer flaps, and the inner surfaces of the pair of inner flaps are folded over so that they are in close contact with the inner surfaces of the pair of side surfaces, The pair of outer flaps are folded along the boundary lines of another pair of side surfaces that are continuous with the pair of outer flaps, and the pair of slits are overlapped with each other, and the pair of outer flaps are joined together to form the stocker.

9. The cardboard box according to claim 8.

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