JPH11255231A - Multi-wall housing container and its set-up method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set up and knock down easily without requiring special tools while making walls at every part, especially at the bottom, compact and multiple. SOLUTION: A multiple housing container has a pair of outer side panels 4 and a pair of outer end panels 5 alternately connected with one another through creases for bending in the same directions for forming external side faces and external end paces of a box, an outer bottom panel 1 provided as an extension through a crease at the lower edge of the outer side panel on one side for forming an outer bottom wall of the box, end flaps 7 provided respectively as an extension through creases at both ends of the outer bottom panel 1 for lining the outer end panels 5, an inner bottom panel 2 provided as an extension through a crease at the lower edge of the outer side panel 4 on the outer side for superposition on the outer bottom panel 1, inner end panels 11 and 12 provided through creases respectively at the upper edge of the paired outer end panels 5 respectively for fixation at the inside of each of the end flaps 7 for holding each of the end flaps 7 between each of the outer end panels 5 and each of the inner end panels, and inner side panels 9 and 10 provided respectively as an extension through creases at the upper edges of the outer side panels 4 for fixation at the inside of the outer side panels 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage container assembled by cutting a blank made of paperboard or the like such as a corrugated cardboard into a required shape. The present invention relates to a multi-wall storage container having a bottom surface composed of two or more panels and a method of assembling the same.

[0002]

2. Description of the Related Art Heretofore, a heat insulating container made of a foaming resin has been used as a cold storage container for transporting a living body at a low temperature in a small amount. However, the foamable resin container cannot be folded and is not only bulky, but also it is difficult to reuse a used one. Also, in the case of disposal, it cannot be incinerated because of the harmfulness of flue gas. Furthermore, since it is hardly decomposed by microorganisms in the soil and the like, it has an adverse effect on the environment when discarded.

[0003] Accordingly, as such a cold storage container, a cold storage container using a blank made of a paperboard or the like such as a corrugated board has attracted attention. Insulated containers made of cardboard or other paperboard can be folded, and used containers can be recycled. In addition, even if it is naturally dumped, it is easily decomposed by microorganisms, and its influence on nature is smaller than that of a foamable resin.

[0004] Further, plastic containers are often used as transport containers which require a certain level of strength and are used in small-port transport such as home delivery. However, when disposing of such a plastic transport container, the effect on the environment is a concern in the same manner as in the case of a cold storage container made of a foamable resin. Therefore, a transport container using a blank made of paperboard such as a corrugated cardboard board has attracted attention as a container for such a small edge transport.

[0005]

In order to use a corrugated cardboard box as a cold storage container or a transfer container as described above, the walls of the container must be multiplexed and assembled densely. However, the conventional multiple cardboard box is not easy to assemble or disassemble, as it requires special tools for assembling, and is troublesome. In addition, there is a problem that the bottom wall cannot be densely and multiplexed.

The present invention has been made in view of the problems in the conventional storage container using a blank such as a corrugated cardboard plate, and can be easily assembled and disassembled without requiring any special tool or the like. It is an object of the present invention to provide a storage container capable of densely and multiplexing parts, particularly a bottom wall, and a method of assembling the same.

[0007]

According to the present invention, in order to achieve such an object, the side wall, the end wall and the bottom wall of the box have a double or more multiplex structure by connecting the outer panel and the inner panel. In particular, the bottom wall is provided with end flaps 7 attached to the inside of the outer end panels 4 and 5 via fold lines from both sides of the outer bottom panel 1 which is bent from one side outer panel 3 via fold lines.
8, the inner bottom panel 2 folded from the other side outer panel 4 via a fold line was placed in a state where these were attached to the inside of the outer end panels 4 and 5. This makes it possible to greatly improve the strength and sealing performance of the bottom wall.

That is, the multiple storage container according to the present invention comprises:
It has a pair of opposed side walls of the box, a pair of opposed end walls of the box, and a bottom wall of the box, and is assembled by a plate material, each of which is a folded line bent in the same direction. Pairs of side outer panels 3 and 4 and end outer panels 5 and 6, which are alternately connected to each other to form an outer surface and an outer end surface of the box body.
A bottom outer panel 1 extending from a lower side of one of the outer panels 3 via a fold line to form an outer bottom wall of the box; and extending from both sides of the bottom outer panel 1 via a fold line, End flaps 7 and 8 attached to the inner surfaces of the end outer panels 5 and 6, and a bottom inner panel 2 that extends from the lower side of the other side outer panel 4 through a fold line and is stacked on the bottom outer panel 1. And end flaps 7, 8 extending from upper sides of the pair of end outer panels 5, 6 via fold lines, and between the end end panels 5, 6, respectively.
The inner panels 11 and 12 fixed to the inner surfaces of the end flaps 7 and 8 so as to sandwich the same, and the upper panels 3 and 4 are extended from the upper sides of the outer panels 3 and 4 via fold lines, and the outer panels 3 and 4, and inner panels 9 and 10 which are fixed to the inner surface side.

In this storage container, the bottom wall can be composed of two panels, a bottom outer panel 1 and a bottom inner panel 2, and the side outer panels 3, 4 and the side end panels 4, 5 are formed in a rectangular cylindrical shape. Even when closed, they can be easily assembled. That is, this container can be assembled as follows from a cardboard or other cardboard punched into a predetermined shape.

First, a pair of outer panels 3, 4 and outer panels 5, 6 forming an outer surface and an outer end surface of a box are bent in the same direction via a folding line, and are alternately connected. These side outer panels 3 and 4 and end outer panels 5 and 6 are assembled into a rectangular tube shape. Next, assemble the bottom side. First,
The end flaps 7 and 8 on both sides of the outer bottom panel 1 are bent from a fold line and attached to the inside of the outer bottom panel 3. Further, the other bottom inner panel 2 is bent inside the box until it contacts the inside of the side outer panel 4. Thereafter, the bottom outer panel 3 and the end flaps 7 and 8 attached to the inside thereof are bent to the bottom of the box. Next, the end flaps 7 and 8 are folded back and provided inside the outer end panels 4 and 5. Thereafter, the bottom inner panel 2 is folded back and overlapped on the bottom outer panel 1. Thereby, the bottom of the box is closed.

Next, the inside of the side wall and the end wall of the box is assembled. First, the end inner panels 11, 12 are bent from the fold line to the inside of the box body, and the end flaps 7, 8 are sandwiched between the inner end panels 11, 12 and the outer end panels 4, 5,
Fix it. Further, the inner side panels 9 and 10 are bent from the folding lines and fixed inside the outer side panels 3 and 4. Thereby, the storage container is completed.

As described above, in the above-mentioned storage container, even if the bottom wall is completely double, the outer panels 3, 4 and the side panels 4, 5 are formed in a rectangular cylindrical shape without using any special tool. Once it is assembled, it can be easily assembled by hand. And not only the side wall and the end wall, but also the bottom wall
It becomes a heavy structure. Furthermore, since the end flaps 7 and 8 extended from both sides of the bottom outer panel 1 are sandwiched between the outer panels 4 and 5 and the inner panels 10 and 11, the bottom wall hardly comes off.
High strength is obtained and the seal at the bottom edge is also perfect. Such a storage container has excellent heat insulation properties and strength because each wall portion has a multi-layer structure, and is most suitable for a heat insulation container, a small-sized transport container stacked in multiple stages, and the like.

From both sides of the inner panels 11, 12 or the inner panels 9, 10, the adjacent inner panels 9, 10 or the inner panels 11, 12 and their outer outer panels 3, 6 or the inner panels. It is preferable that the corner flaps 15, 15 sandwiched between the first and second members 11, 12 are extended. By doing so, the side wall and the end wall are firmly fixed, and the sealing performance at the boundary between the side wall and the end wall is improved.

A flat portion 31 having a predetermined width is formed on the upper side of the side wall of the box between the double fold lines between the outer panels 3 and 4 and the inner panels 9 and 10. Preferably, the inner edge of the box is higher than the outer edge. By doing so, when the storage containers are stacked in multiple stages, the weight of the upper storage container does not exert a force such that the upper side of the side wall of the lower storage container is bent outward, but as a force that tightens inward. Works. Therefore, when the storage containers are stacked in multiple stages, the shape of the box is not easily deformed.

[0015]

Embodiments of the present invention will now be described specifically and in detail with reference to the drawings.
FIG. 1 is a development view showing an example of a blank of a storage container according to the present invention. In particular, this example is a case where the storage container is used as a heat insulating container. The blank of the storage container is made by punching a paperboard such as a cardboard as shown in FIG. Solid lines indicate cutting lines.

In this blank, the outer panel 5, the outer panel 3, the outer panel 6, and the outer panel 4 are sequentially and integrally connected, and the boundary between them is a broken line. Joining flaps 13 extend from the outermost panel 4 at the end, and their boundaries are broken lines. These outer panels 3, 4,
The height of the end panels 5, 6 and the joining flap 13 are the same. The width of the outside panel 3 and the outside panel 4 are the same,
The outer panel 5 and the outer panel 6 have the same width. The width of the joining flap 13 is sufficiently smaller than these side outer panels 3 and 4 and end outer panels 5 and 6. Oval hand holes 14, 14 are formed in the upper center of the end outer panels 5, 6. In FIG. 1, the vertical direction is the height direction,
The left-right direction is the width direction.

A bottom outer panel 1 extends from a lower side of one of the side outer panels 3, and a boundary between the side outer panel 3 and the bottom outer panel 1 is a broken line. The length of the bottom outer panel 1 in the left-right direction in FIG. 1 is smaller than the width of the side outer panels 3 and 4 by about twice the thickness of the blank, and the width of the bottom outer panel 1 in the vertical direction in FIG. And the width of the outer end panels 5 and 6 is smaller by the thickness of the blank.

End flaps 7, 8 from both sides of the side bottom panel 1.
The boundary between the side bottom panel 1 and the end flaps 7 and 8 is a broken line. The height of the end flaps 7, 8 in the left-right direction in FIG. 1 is lower than the outer panels 5, 6, and the width of the end flaps 7, 8 in the up-down direction of FIG. The end flaps 7 and 8 are not provided with a handle hole.

The bottom inner panel 2 extends from the lower side of the other side outer panel 4, and a broken line is formed between the side outer panel 4 and the bottom inner panel 2. The length of the bottom inner panel 2 in the left-right direction in FIG. 1 is slightly smaller than the width of the side outer panels 3 and 4 by about twice the thickness of the blank, and the length of the bottom inner panel 2 in the vertical direction in FIG. The width is slightly smaller than the width of the outer panels 5, 6 to the extent of the thickness of the blank. A concave portion 17 suitable for placing a finger is formed at the center of the side of the bottom inner panel 2 facing the fold line of the side inner panel 2.

Side inner panels 9 and 10 extend from the upper sides of the side outer panels 3 and 4, and a parallel double folding line is provided between the outer panels 3 and 4 and the inner panels 9 and 10. It has become. In FIG. 1, the inner panels 9, 10
The height to the opposite edge of FIG. 1, that is, the uppermost edge in FIG. 1 is substantially the same as the height of the outer panels 3, 4 and the side panels 5, 6. The left and right widths of the inner side panels 9 and 10 in FIG. 1 are narrowed by the cut-in corner flaps 15 and 15 of the side end panels 11 and 12 to be described later.

The inner panels 11, 12 extend from the upper sides of the outer panels 5, 6, and between the outer panels 5, 6 and the inner panels 11, 12 are parallel double folded lines. It has become. A corner flap 15 extends to the right side of the inner panel 11 in FIG. 1, and a broken line is formed between the inner panel 11 and the corner flap 15. In FIG. 1 of the inner panel 11, corner flaps 15 extend on both left and right sides, and a broken line is formed between the inner panel 11 and the corner flap 15. Further, the end flaps 11, 12
In FIG. 1, the upper side is a fold line, and narrow edge flaps 16, 16 are formed following the fold line.
The height from the fold line of the edge flaps 16, 16 to the lower fold line in FIG. 1 is substantially the same as the height of the outer panels 3, 4, and the side end panels 5, 6. The end flaps 11 and 12 are not provided with a handle hole.

Such a blank is assembled as follows. First, a pair of outer panels 3, 4 and outer panels 5, 6, which form the outer surface and the outer end surface of the box body, are all bent inward along the folding lines. In FIG. 1, the near side of the drawing is the inside, and the far side of the drawing is the outside. Then, the outer surface of the joining flap 13 is joined to the inner surface of the edge of the outermost end panel 5 by bonding or staple or the like. Thus, the side outer panels 3 and 4 and the end outer panels 5 and 6 are assembled into a rectangular tube. This state is shown in FIG.

Next, the bottom side is assembled. First, as shown by the arrows in FIG. 3, the end flaps 7 on both sides of the bottom outer panel 1,
8 is bent from the fold line and attached to the inside of the bottom outer panel 3 as shown in FIG. Before and after this, the other bottom inner panel 2 is bent as shown by an arrow in FIG. 3 and is bent inside the box until it comes into contact with the inside of the outer side panel 4 as shown by a broken line in FIG. . Thereafter, as shown by the arrow in FIG. 4, the bottom outer panel 3 and the end flaps 7, 8 attached to the inside thereof are bent, and the bottom surface of the box is closed as shown by the broken line in FIG. Next, as shown by the arrow in FIG.
The end flaps 7, 8 are folded back by 90 ° and attached to the inside of the outer panels 4, 5. Thereafter, the bottom inner panel 2 is folded back by 90 °, and is stacked on the bottom outer panel 1. Thereby, the bottom wall of the storage container is assembled, and the bottom surface is completely closed.

Next, the inside of the end wall of the box is assembled. First, as shown in FIG. 6, the end portions of the end inner panels 11 and 12 are bent inward from the fold lines to form edge flaps 16 and 16.
Is bent at right angles to the inner panels 11 and 12. Also, the corner flaps 15, 15 on one side of the inner end flap 11 and both sides of the inner end flap 12 are bent outward at right angles from the fold line. Then, the double fold lines at the boundaries between the outer end panels 4 and 5 are sequentially bent at right angles to the inside of the box, and the end flaps 11 and 12 are pushed into the inside of the end face of the box. Thereby, the end inner flaps 7 and 8 are held between the inner end flaps 11 and 12 and the outer end panels 4 and 5 while the inner end panels 11 and 12 are applied to the inside of the end flaps 7 and 8, respectively. Fixed.

Next, the inside of the side wall of the box is assembled. That is, as shown in FIG. 7, the inner side panels 9 and 10 are sequentially bent from a double fold line and fixed inside the outer side panels 3 and 4. At this time, the end flaps 11, 12
Corner flaps 15 and 15 bent outward from one or both sides are applied to the inner surfaces of the ends of the outer and outer panels 3 and 4, respectively. It is sandwiched between and fixed. Thus, the assembly of the storage container is completed.

In this container, the bottom wall is formed by the outer bottom panel 1 and the inner bottom panel 2. The side walls are formed by the outer panels 3 and 4 and the inner panels 9 and 10. Further, the end walls are end panels 5, 6, end flaps 7,
8 and end panels 11 and 12. The bottom outer panel 1 and the end panels 7, 8 are sealed between the bottom surface and the end surface of the box body. The corner flaps 15, 15 seal between the side surface and the end surface of the box. When unpacking this box, the procedure is reversed. The concave portion 17 of the bottom inner panel 2 is used when a user puts his / her finger to raise the bottom inner panel 2 when unfolding the storage container.

At the upper edge of the side wall of the storage container, a flat portion 31 formed between the double fold lines of the outer panels 3, 4 and the inner panels 9, 10 is formed. Side panel 9, 1
Since 0 is the same as the height of the outside panels 3 and 4, the inner edge of the flat portion 31 is slightly higher than the outer edge by the thickness of the bottom inner panel 2. Similarly, the outer edge panels 5 and 6 and the inner edge panel 11,
A flat portion 32 formed between the twelve double fold lines is formed. End end panels 11 and 12 are end end panels 5 and 6
The height of the bottom panel 2
The inner edge of the flat portion 32 is slightly higher than the outer edge.

FIGS. 8 and 9 show an example in which another component made of a corrugated cardboard is incorporated in the container and used. This part is provided with spacers 18, 18 for forming steps at both ends inside the box, an inner lid 19, which is put on the upper portion of the storage container by using the steps formed by the spacers 18, 18. Outer lid 2 for closing the upper opening of the storage container
0.

The spacers 18, 18 are connected to the inner panel 11,
It has a width and a height corresponding to the cutouts on both sides of the inner panels 9, 10 corresponding to the corner flaps 15 on both sides of the spacer 12, and both ends of the spacers 18, 18 are fitted and assembled here. FIG. 9 shows a state in which the spacers 18, 18 are incorporated in a storage container. As shown in this figure, the incorporation of the spacers 18, 18 forms a shelf-like step by the spacers 18, 18 inside the end of the storage container.

The inner lid 19 is made of a corrugated board having the same length as the width of the side panels 3 and 4 and the same width as the width of the end panels 5 and 6. The inner lid 19 is stored in the storage container through the opening thereof, and is placed on a shelf-like step formed by the spacers 18 at both ends. Thereby, the upper middle part of the storage container is closed by the inner lid.

The outer lid 20 is provided with insertion flaps 33 on both sides thereof except for both ends of the lid main body 21. A fold line is formed between the lid body 21 and the insertion flaps 33, 33. Each of the insertion flaps 33, 33 is provided with a U-shaped notch that is open toward the lid body 21, and the cut portion is not provided with a fold line. Therefore, when the insertion flaps 33, 33 are bent downward from the fold lines as shown in FIGS.
3, 33 are formed. The length of the lid body 21 is slightly longer than the width of the outer panels 3, 4, and the width of the lid body 1 is slightly smaller than the interval between the pair of inner panels 9, 10.

In the outer lid 21, the insertion flaps 33, 33 are inserted into the inner panels 9, 10, and both ends of the lid body 21 are placed on the flat portions 32 at both ends of the storage container.
3 are placed on the flat portions 31 on both sides of the storage container. Thereby, the upper opening of the storage container is closed by the outer lid 20. This state is shown in FIG. In this storage container, for example, raw materials and the like are stored inside the inner lid 19, and the inner lid 19 and the outer lid 20 are stored.
A cool agent or the like is stored between them.

FIGS. 10 to 13 show other examples of the storage container according to the present invention, and are particularly suitable as a storage container which is used in multiple layers. FIG. 10 shows a blank of the storage container. The basic structure of this blank is shown in FIG.
Is basically the same as the blank of the storage container shown in FIG. The differences are as follows.

As shown in FIG. 10, the inner panels 9, 10 and the inner panels 11, 12 extend from the upper sides of the outer panels 3, 4, and the outer panels 5, 6, respectively. The point of the double fold line is the same as the above-described example. However, here, the outer panels 3 and 4 and the inner panels 9 and 10 and the outer panels 5 and 6 and the inner panels 11 and 12 are used.
Is a double fold line, and both sides of the fold line at the boundary between the side outer panels 3, 4 and the end outer panels 5, 6 are trapezoidal cutting lines 29, 29,. It is,
The upper sides of the cutting lines 29, 29... Have the same height as the upper folding line in FIG.

Secondly, on the lower side of the outer panels 3, 4 and the outer panels 5, 6, the portions on both sides of the fold line at the boundary between the outer panels 3, 4 and the outer panels 5, 6 are provided. A trapezoidal cutout 2 having the same trapezoidal shape as the cutting line 29 at a portion corresponding to the cutting line 29
8, 28... Are provided. Third, the inner panel 9,
10 and the lower sides of the inner panels 11, 12;
0, the projections 23, 23, 26, 26 instead of the edge flaps 16 of the above example
Is provided. On the other hand, when assembling the storage container, the central portions of the four sides of the bottom inner flap 2 with which the lower sides of the side inner panels 9, 10 and the end inner panels 11, 12 abut correspond to the protrusions 23, 23, 26, 26. Rectangular notch 2
7, 27... Are provided.

Fourth, the handle holes 14, 14 are formed not only in the outer end panels 5, 6 but also in the corresponding portions of the end flaps 7, 8 and the inner end flaps 11, 13. 24, 25, and 25 are provided, respectively. As shown in FIG. 11, the procedure for assembling the storage container from this blank is also to assemble the side outer panels 3, 4 and the end outer panels 5, 6 into a rectangular cylindrical shape. Assembling is basically the same as in the above example. However, in this case, when the side inner panels 9, 10 and the end inner panels 11, 12 are bent inside the box, the lower side projections 23, 23, 26, 26 are engaged with the corresponding notches 27, 27, respectively. And fix them together. By doing so, the side inner panels 9 and 10 and the end inner panels 11 and 12 are less likely to come off, and a storage container with high strength is obtained.

In the box assembled in this manner, the upper sides of the trapezoidal cutting lines 29, 29... Are raised, and the corners of the outer panels 3, 4 and the outer panels 5, 6 of the box are raised. A right-angled projection is formed on the substrate. Also, the outer panels 3, 4
.. Are formed in the corners on the bottom side of the outer end panels 5 and 6. The projections formed by these cutting lines 29, 29 ... and the notches 28, 28
When the storage containers are stacked up and down as shown in FIG. 13, they are fitted together and hold the upper and lower storage containers so as not to be displaced from each other.

Further, in this storage container, similarly to the case of the storage container described above, the upper edge of the side wall is formed between the double fold lines of the outer panels 3, 4 and the inner panels 9, 10. A flat portion 31 is formed. Since the inner panels 9 and 10 have the same height as the outer panels 3 and 4, the inner edge of the flat portion 31 is slightly higher than the outer edge by the height of the bottom inner panel 2. .

Similarly, on the upper edge of the end wall of the storage container,
Flat portions 32 are formed between the double fold lines of the outer end panels 5 and 6 and the inner end panels 11 and 12. Since the inner panels 11, 12 have the same height as the outer panels 5, 6, the inner edge of the flat portion 32 is slightly higher than the outer edge by the height of the bottom inner panel 2. . As a result, when the storage containers are stacked in multiple stages as shown in FIG. 13, due to the weight of the upper storage container, a force such that the upper side of the side wall of the lower storage container is bent outward is not applied, and the storage container is tightened inward. Act as such a force. Therefore, when the storage containers are stacked in multiple stages, the shape of the box is not easily deformed.

In the above description, the side surface and the end surface or the side wall and the end wall of the box are merely relative positional relationships, and are not absolute. When one pair of opposing surfaces is a side surface among the four surfaces excluding the upper surface and the bottom surface, the other pair of opposing surfaces is an end surface.

[0041]

As described above, the storage container according to the present invention can be easily assembled and disassembled without requiring any special tools and the like, and each wall, particularly the bottom wall, can be densely formed. Can be multiplexed. In this storage container, the bottom wall can be constituted by two panels, the bottom outer panel 1 and the bottom inner panel 2, and the outer side panels 3, 4 and the side end panel 4,
Even when 5 is closed in the shape of a rectangular tube, these can be easily assembled. Therefore, a storage container having high heat retention or high strength can be easily obtained using paperboard such as corrugated cardboard.

[Brief description of the drawings]

FIG. 1 is a development view showing a blank of an example of a storage container according to the present invention.

FIG. 2 is a perspective view showing a completed state in which other components are incorporated into a storage container made by assembling the blank.

FIG. 3 is a perspective view showing a state in which a side outer panel and a side end panel of the blank are joined in a rectangular tube shape.

FIG. 4 is a perspective view showing a state in which a storage container is being assembled from the blank.

FIG. 5 is a perspective view showing a state in which a storage container is being assembled from the blank.

FIG. 6 is a perspective view showing a state in which the storage container is being assembled from the blank.

FIG. 7 is a perspective view showing a state in which the storage container is being assembled from the blank.

FIG. 8 is a perspective view showing a state where assembly of the storage container using the blank is completed, and other components are incorporated in the storage container.

FIG. 9 is a perspective view showing a state where assembly of the storage container using the blank is completed, and a part of another component is incorporated in the storage container.

FIG. 10 is a development view showing a blank of another example of the storage container according to the present invention.

FIG. 11 is a perspective view showing a state where the side outer panel and the side end panel of the blank are joined in a rectangular tube shape.

FIG. 12 is a perspective view showing a state where the storage container is completely assembled by the blank and the storage container is completed.

FIG. 13 is a perspective view showing a state where completed storage containers are stacked in two stages.

[Explanation of symbols]

 Reference Signs List 3 outside panel 4 outside panel 5 outside panel 6 outside panel 1 bottom outside panel 7 end flap 8 end flap 2 bottom inside panel 11 inside panel 12 inside panel 9 side inside panel 10 side inside panel 15 corner flap 31 Flat part 32 Flat part

Claims (4)

[Claims] 1. A storage container having a pair of side walls of a box body, a pair of end walls of a box body facing each other, and a bottom wall of a box body, and all of which are bent in the same direction in a storage container assembled by a plate material. A pair of side outer panels (3), which are alternately connected via the folded line, and form an outer surface and an outer end surface of the box body,
(4) and an outer panel (5), (6), and a lower outer panel (1) extending from a lower side of one of the outer panels (3) via a folding line to form an outer bottom wall of the box body. And end flaps (7) and (8) extending from both sides of the bottom outer panel (1) via folding lines and attached to the inner surfaces of the outer panels (5) and (6), and the other side. A bottom inner panel (2) extending from a lower side of the outer panel (4) via a fold line and overlapping the bottom outer panel (1); and a pair of the end outer panels (5) and (6). The end flaps (7) are extended from the upper side via a folding line, and the end flaps (7) and (8) are sandwiched between the end outer flaps (5) and (6).
End inner panels (11) fixed to the inner surface side of (8), (1)
2) and an inner side panel (9) extending from the upper side of the outer side panels (3) and (4) via a fold line and fixed to the inner side of the outer side panels (3) and (4). , (10), the multi-walled container. 2. From both sides of the inner panel (11), (12) or the inner panel (9), (10), the adjacent inner panel (9), (10) or inner panel (11), (1
Corner flaps (15), (15) extending between 2) and their outer lateral panels (3), (6) or end panels (11), (12) extend. The multiplex storage container according to claim 1, wherein: 3. A flat portion having a predetermined width between upper and lower side walls of the box and a double fold line between the outer side panels (3) and (4) and the inner side panels (9) and (10). (31) is formed,
3. The multiple storage container according to claim 1, wherein an inner edge of the box body of the flat portion (31) is higher than an outer edge. 4. A method of assembling a storage container having a pair of opposed side walls of a box, a pair of opposed end walls of the box, and a bottom wall of the box, and assembling a storage container assembled by a plate material. A pair of side outer panels (3), (4) and end outer panels (5), (6) forming an outer side surface and an outer end surface are bent in the same direction from a fold line, and are alternately connected to form a square tube. The joining step, and bending the end flaps (7) and (8) extending from both sides of the bottom outer panel (1) extending from the lower side of the one outer panel (3) from the fold line to form the outer side. A step of attaching to the inside of the panel (3) and the other side outside panel (4)
Bending the inner bottom panel (2) extended from the lower side of the outer panel (4) from the fold line, and attaching the inner panel to the inside of the outer panel (4); And (8) bending the box to the bottom of the box;
Then, the end flaps (7) and (8) are folded back and attached to the inside of the outer panels (4) and (5), and then the inner panel (2) is folded back and the outer panel ( 1) a step of stacking on top of a pair of outer panels (5),
(6) The inner end panels (11) and (1) extending from the upper side.
2) is bent from the fold line to the inside of the box, and the end flaps (7), (8) are located between the inner panels (11), (12) and the outer panels (4), (5). Clamping and fixing, and bending the inner side panels (9) and (10) extended from the outer side panels (3) and (4) from a fold line,
Fixing the inside of the outside panels (3) and (4).