JPH10101082A - Stackable paper container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stackable paper container of flat parallelepiped tray shape capable of storing heavy vegetables and fruits, marine products, and various parts, capable of achieving carriage by trucks and exhibition and sales over the counter in a stacked manner without shifting, easy in assembly, and capable of being recycle any number of times. SOLUTION: A forward upper plate 20, a forward plate 30, a bottom plate 40, a rear plate 30 and a rear upper plate 20 are successively and continuously provided, right and left side plates 50, 50 and right and left side inner plates 51, 51 are successively and continuously provided on right and left side of the bottom plate 40, oval locking holes a, a are provided in right and left end parts of the forward upper plate 20 and the rear upper plate 20, oval stack- locking holes b, b are provided before and behind right and left ends of the bottom plate 40, inversely U-shaped stack-locking projections c, c are provided before and behind the upper sides of the right and left side plates 50, 50, and U-shaped locking projections d, d are provided before and behind the lower sides of the right and left inner plates 51, 51.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a vegetable having a heavy weight.
The present invention relates to a stackable paper container in the shape of a flat rectangular parallelepiped tray capable of storing fruits, seafood, seafood, various components, and the like and stacking them without slippage for truck transport, store display, and sale.

[0002]

2. Description of the Related Art Conventionally, heavy vegetables, fruits, fish and shellfish, various parts, etc. are accommodated and stacked so that they are not displaced, and can be transported by truck, or displayed and sold in stores.
For example, various stackable plastic containers in the shape of a flat rectangular parallelepiped tray shown in FIG. 5 are widely used.

Conventionally, instead of the stackable plastic container shown in FIG. 5, a stackable paper container which is inexpensive to manufacture and easy to process and dispose at the time of disposal is also used so as not to shift. As shown in FIG. 6, the front upper plate 20, the upper slant front plate 31, the front plate 30, the lower slant front plate, the lower slant plate 40, the lower slant rear plate, and the rear can be stacked to perform truck transportation, store display and sale, and the like. Face plate 30, upper inclined rear plate 31, and rear upper plate 2
And a left and right side plate having a flat octagonal tray shape, comprising a cover panel which is successively connected to the right and left through a fold line, and left and right side plates 50 and 50 provided with appropriate finger hanging openings 52, respectively. Stackable paper containers commonly referred to as packs (see US Pat. No. 5,116,200) are used.

[0004]

However, conventional stackable plastic containers in the form of a flat rectangular parallelepiped tray shown in FIG. 5, for example, include heavy vegetables, fruits, marine products, various parts and the like. Although it can be stored and transported in a stack so that it does not slip, it can be transported by truck or displayed at stores, but because it is made of plastic, its production cost is generally high, and it is necessary to dispose of damaged plastic containers, such as incineration. There is a problem in the treatment and disposal of the plastic container, and there is also a problem in transportation and storage before and after use due to the bulk of the plastic container formed by injection molding.

It is an object of the present invention to provide a stackable paper container which is inexpensive to manufacture and which can be easily processed and disposed at the time of disposal, instead of the above-mentioned conventional stackable plastic container. A flat rectangular parallelepiped tray that stores certain vegetables, fruits, seafood, seafood, various parts, etc., can be stacked so that it does not slip, and can be transported by truck or in-store display / sales. To provide a stackable paper container.

[0006]

As shown in FIG. 1, a stackable paper container according to the present invention comprises a front upper plate 20 and a front plate 30.
And the bottom plate 40, the rear plate 30, and the rear upper plate 20 are sequentially connected via a fold line (a dashed line with no reference numeral; the same applies hereinafter). Face plate 50
1B is a flat rectangular parallelepiped tray-shaped paper container shown in FIG. 1B in which the left and right side inner plates 51 and 51 are sequentially connected via a fold line. At the left and right ends, vertically long locking holes a are provided, respectively.
In addition, longitudinally-extending locking holes b, b are provided before and after the left and right ends of the bottom plate 40, respectively.
In addition, before and after the upper side (left side or right side in FIG. 1A), inverted U-shaped (horizontal U-shaped in FIG. 1A) stacked locking projections c are provided, and left and right side inner plates 51 are also provided. Before and after the lower side (the left side or the right side in FIG. 1A), a U-shape (FIG. 1A)
In this case, the left and right side inner plates 51, 51 are first folded, and the left and right side inner plates 51, 51 are fixed to the bottom plate 40. Are respectively inserted and locked in the stacking locking holes b, b, and then the front upper surface plate 20 and the rear upper surface plate 20 are folded over, and the locking holes between the front upper surface plate 20 and the rear upper surface plate 20 are formed. a ・ a left and right side plates 50 ・ 50
The stackable paper containers are characterized in that the stacking locking projections c, c are inserted and locked, respectively.

[0007] In addition, the stackable paper container of the present invention includes:
As shown in FIG. 1, one or two or more inverted U-shapes (partially U-shaped in FIG. 1A) are provided on upper sides (partially lower sides in FIG. 1A) of the front plate 30 and the rear plate 30. Auxiliary locking projection e ・ e
-Stackable paper containers characterized by providing e.

The stackable paper container according to the present invention is the same as the stackable paper container shown in FIG. 1 described above, except that it is located between the front upper plate 20 and the front plate 30 and the rear plate 30 as shown in FIG. The upper oblique front plate 31 and the upper oblique rear plate 31 are respectively connected between the front upper surface plate 20 and the rear upper surface plate 20 via fold lines,
At the left and right ends of the upper oblique front plate 31 and the upper oblique rear plate 31,
By providing vertically long locking holes f, f,
The left and right side plates 50 · are inserted into the locking holes f · f between the upper inclined front plate 31 and the upper inclined rear plate 31 while folding the upper inclined rear plate 31.
A stackable paper container characterized in that both upper corners (both right corners or both left corners in FIG. 3A) of the inner side 50 and the left and right side inner plates 51 are inserted and locked, respectively.

In addition, in the stackable paper container according to the present invention, as shown in FIG. 3, each of the vertically-long stacking locking holes b of the bottom plate 40 has a vertically long stacking and locking hole having a wide central portion. Hole b, and the left and right side plates 50
, The inverted U-shaped stacking locking projection c is an inverted U-shaped stacking locking projection c with both vertical parts bulging (in FIG. 3A, the horizontal U-shape with both horizontal parts bulging). And a stackable paper container.

[0010]

In the stackable paper container of the present invention, the front upper plate 20, the front plate 30, the bottom plate 40, the rear plate 30, and the rear upper plate 20 are sequentially connected via a fold line. A flat rectangular parallelepiped tray-shaped paper container in which left and right side plates 50 and 50 and left and right side inner plates 51 and 51 are sequentially provided on the left and right sides of the bottom plate 40 via fold lines, respectively. At the left and right ends of the face plate 20 and the rear upper surface plate 20, vertically long locking holes a are respectively provided, and at the left and right ends of the bottom plate 40, vertically stacked locking holes b are respectively provided. In addition, inverted U-shaped stacked locking projections c, c are respectively provided before and after the upper side of the left and right side plates 50, 50, and U-shaped before and after the lower side of the left and right side inner plates 51, 51. As shown in FIG. 1B, the left and right locking protrusions d The inner plates 51, 51 are folded, and the locking projections d, d of the left and right side inner plates 51, 51 are inserted and locked into the stacked locking holes b, b of the bottom plate 40, respectively. The front upper surface plate 20 and the rear upper surface plate 20 are folded over, and the left and right side surface plates 5 are inserted into the locking holes a of the front upper surface plate 20 and the rear upper surface plate 20.
0.50 stacking locking projections c, c are inserted and locked, respectively. This is a stackable paper container which is inexpensive to manufacture and easy to process and dispose at the time of disposal. It stores fruits, marine products, various parts, etc., and inserts the left and right of the lower stackable paper container into the stacking locking holes b, b of the bottom plate 40 of the stackable paper container shown in FIG. 1B. The stacking locking projections c, c on the side plates 50, 50
By simply inserting and locking them (via the locking holes a, a between the 0 and the rear upper plate 20), the trucks can be stacked so as not to be easily displaced, and can be transported in trucks or displayed and sold at stores. Easy assembly Thus, it is possible to provide a flat rectangular parallelepiped tray-shaped stackable paper container that can be reused any number of times.

In addition, in the stackable paper container of the present invention, the upper side of the front plate 30 and the rear plate 30 is
By providing one or two or more inverted U-shaped auxiliary locking projections e, ee, respectively, the auxiliary locking projection between the front plate 30 and the rear plate 30 of the stackable paper container shown in FIG. e
· E · e securely fastens the lower ends of the front plate 30 and the rear plate 30 of the upper stackable paper container, respectively.
It is possible to provide a stackable paper container in the shape of a flat rectangular parallelepiped tray which can be stacked so as not to be displaced and can be transported in a truck or displayed at a store or sold.

In the stackable paper container according to the present invention, in the stackable paper container shown in FIG. 1, the space between the front upper surface plate 20 and the front surface plate 30 and the rear surface plate 30 and the rear upper surface plate 20 are different from each other. Between the upper oblique front plate 31 and the upper oblique rear plate 3
1 are connected to each other via a fold line, and vertically long locking holes f, f are provided at the left and right ends of the upper oblique front plate 31 and the upper oblique rear plate 31, respectively. As shown in FIG. 3B, while the upper oblique front plate 31 and the upper oblique rear plate 31 are folded over, a locking hole f between the upper oblique front plate 31 and the upper oblique rear plate 31 is formed.
The left and right side plates 50, 50 and the left and right side inner plates 51
FIG.
Of the stackable paper container shown in (1) and (2) stably lock the locking holes a, a between the front upper surface plate 20 and the rear upper surface plate 20, and the stacking locking protrusions c, c of the left and right side plates 50, 50. FIG. 3B is a stackable paper container having improved strength, shape retention, display effect, etc., which similarly stores heavy vegetables, fruits, marine products and various parts. The stacking locking projections c, c of the left and right side plates 50, 50 of the lower stackable paper container are placed in the stacking locking holes b, b of the bottom plate 40 of the stackable paper container shown in FIG. It is easy to assemble by simply inserting and locking (through the locking holes a and a between the rear top plate 20 and the rear top plate 20) so that they can be easily stacked so that they will not slip out, and can be transported by truck or displayed and sold in stores. Can provide a flat rectangular parallelepiped tray-like stackable paper container that can be reused many times .

In addition, in the stackable paper container of the present invention, each of the vertically long stacking locking holes b of the bottom plate 40 is a wide vertically long stacking locking hole b at the center. 3B, the stacking locking holes c of the bottom plate 40 of the stackable paper container, and the stacking locking projections c of the left and right side plates 50 of the lower stackable paper container.
c, each of which is easy to insert, and furthermore, the inverted U-shaped stacking locking projections c of the left and right side plates 50, 50 have inverted U-shaped stacking joints with both vertical portions bulging out. The left and right side plates 5 inserted once by being the stop projections c.
The stacking projections c and c of 0.50 are securely fixed to the stacking and locking holes b and b of the bottom plate 40, respectively. The present invention can provide a flat rectangular parallelepiped tray-shaped stackable paper container that can be displayed and sold in stores.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a stackable paper container according to the present invention, as shown in the examples described later, a normal punching die is used by using a suitable printed paperboard or corrugated paperboard. In the punching process, a single-sheet stackable paper container blank is manufactured in a simple manner as shown in FIGS. 1A and 3A, and the left and right side inner plates 51 are first folded by a simple manual operation. The locking projections d, d of the left and right side inner plates 51, 51
Are inserted into the stacking locking holes b and b of the bottom plate 40, respectively, and are locked. (The upper slant front plate 31 and the upper slant rear plate 31 are folded over while the upper slant front plate 31 and the upper slant Left and right side plates 50, 50 and left and right side inner plates 5 are provided in locking holes f, f with the face plate 31.
Insert and lock both upper corners with 1.51.)
Next, the front upper surface plate 20 and the rear upper surface plate 20 are folded over, and the stacking locking protrusions c, c of the left and right side plates 50, 50 are inserted into the locking holes a, a between the front upper surface plate 20 and the rear upper surface plate 20. Can be inserted and locked, and can be assembled in the shape of the flat rectangular parallelepiped tray shown in FIGS. 1B and 3B. A stackable paper container which is easy to assemble and inexpensive to manufacture can be provided.

Further, in the stackable paper container of the present invention, as shown in the embodiments described later, the front upper plate 20 and the rear upper plate 2 of the stackable paper container shown in FIGS. 1B and 3B are used.
0 is strongly peeled upward, so that the front top plate 20
Holes a and a left and right side plates 50.
The locking of the 50 stacked locking projections c, c is released, and the locking holes f between the upper inclined front plate 31 and the upper inclined rear plate 31 are removed.
F, left and right side plates 50, 50 and left and right side inner plates 51
The upper and lower corners of the birch pack 51 are released from each other and can be easily returned to a flat state before assembly and stored. As in the case of the stackable paper container, a flat rectangular parallelepiped tray-shaped stackable paper container which can be re-assembled and accommodated therein and reused many times can be provided.

[0016]

【Example】

Embodiment 1 FIG. 1A is a plan view of a stack of stackable paper containers in Embodiment 1 of the present invention, and FIG. 1B is a perspective view of stackable paper containers.

That is, a front upper surface plate 20 having a notch 21 for opening expansion on a rear side (a front side in FIG. 1A) and an upper side (FIG. 1A).
In FIG. 1A, a front plate 30 provided with three inverted U-shaped (U-shaped in FIG. 1A) auxiliary locking projections e, ee, and e, a bottom plate 40, and three inverted U-shaped members on the upper side. -Shaped auxiliary locking projection e ・ e ・
e and a rear upper plate 20 having a front side (a rear side in FIG. 1A) provided with an opening expanding notch 21 are sequentially connected via a fold line. On the left and right sides of
Left and right side plates 50, 50 each having a finger opening 52 at the center upper portion, and left and right side inner plates 51, 51 similarly having the finger openings 52, respectively, are sequentially connected via a fold line. Vertical locking holes a are provided at the left and right ends of the front upper plate 20 and the rear upper plate 20, respectively, and vertically stacked locking holes b before and after the left and right ends of the bottom plate 40.
· B are provided respectively, and the left and right side plates 50
In the front and rear of the upper side (the left side or the right side in FIG. 1A), inverted U-shaped (horizontal U-shaped in FIG. 1A) stacking locking projections c are provided, respectively. A U-shaped (horizontal U-shaped in FIG. 1A) locking projections d are provided before and after the lower side (the left side or the right side in FIG. 1A), respectively.
There is a single stackable paper container blank with a simple process shown in Fig. 5 and 550g /
of m ^2, using a backing kraft cardboard which impart water resistance, with higher hit抜工using conventional cutting die, length, width, and depth to accommodate the like marine fish is 32 × 46 × 9cm The stackable paper container blank of Example 1 was produced.

Next, the fold line of the blank of the stackable paper container shown in FIG. 1A, which is indicated by a dashed line without any sign, is mountain-folded (the printed surface side becomes a mountain; the same applies hereinafter). By simple manual work, first, the left and right side inner plates 51, 51 are folded, and the locking projections d, d of the left and right side inner plates 51, 51 are folded.
Are inserted into the stacking locking holes b and b of the bottom plate 40 and locked, and then the front upper plate 20 and the rear upper plate 20 are folded over, and the front upper plate 20 and the rear upper plate 20 are The stacking locking projections c, c of the left and right side plates 50, 50 are respectively inserted and locked into the locking holes a, a of FIG. 1B, and the stacking of the flat rectangular parallelepiped tray-shaped embodiment shown in FIG. 1B is possible. Paper containers were produced.

Subsequently, in the stackable paper container shown in FIG. 1B, heavy seafood such as seafood is accommodated, and the stacking locking holes b,... Of the bottom plate 40 of the stackable paper container shown in FIG. b, the stacking locking projections c, c of the left and right side plates 50, 50 of the lower stackable paper container, which also contain seafood and the like, are connected to the front upper plate 20 and the rear upper plate 20, respectively. When inserted and locked through the locking holes a, the stackable paper containers can be easily stacked so as not to shift, and the front plate 30 and the rear plate 30 of the lower stackable paper container can be stacked. The auxiliary locking projections e, e, e of FIG.
The lower end portions of the front plate 30 and the rear plate 30 of the stackable paper container shown in FIG. 1 are securely fastened to each other.
A stackable paper container in the form of a flat rectangular parallelepiped tray that can be sold and is easy and reliable to assemble and stack is obtained.

Subsequently, in the stackable paper container shown in FIG. 1B, the front upper plate 20 and the rear upper plate 20 are fixed by inserting the stacking locking projections c, c of the left and right side plates 50, 50, respectively. 20 is strongly peeled upward, the connection holes a, a of the front upper surface plate 20 and the rear upper surface plate 20 and the connection locking protrusions c, c of the left and right side plates 50, 50 are respectively connected. It comes off and can be easily returned to the flat state before assembling and can be stored.It can be reassembled and accommodates seafood, seafood, etc., and can be reused many times. A possible paper container was obtained.

In the stackable paper container of this embodiment, as in the case of a conventional ordinary paper box or the like, the folding pieces 32 shown in FIG.
32 are provided, and the left and right side inner plates 51, 51 are folded over the folded pieces 32, 32, so that the front plate 30, the left and right side plates 50, 50 and the rear plate 30 2B, connection pieces 33, 33 each having a valley fold line g shown in FIG. 2B are provided, and the left and right side inner plates 51, 51 are sandwiched by the connection pieces 33, 33 obtained by valley-folding the valley fold line g.
By folding the paper container, it is possible to enhance the shape retention and the like at the four corners of the stackable paper container in the shape of a flat rectangular parallelepiped tray.

<Embodiment 2> FIG. 3A shows Embodiment 2 of the present invention.
FIG. 3B is a plan view of a stack of paper containers, and FIG. 3B is a perspective view of the stackable paper containers.

That is, the front upper plate 20 and the upper oblique front plate 3 having the notches 21 for opening expansion on the rear side (the front side in FIG. 3A).
1, a front plate 30, a bottom plate 40, a rear plate 30, an upper inclined rear plate 31, and a notch 21 for opening expansion at a front side (a rear side in FIG. 3A).
Are provided successively with the upper surface plate 20 via a fold line, and left and right side plates 50.
50 and the left and right side inner plates 51, 51 are sequentially connected via fold lines, respectively, so that the front upper plate 20 and the upper oblique front plate 3
1 and the left and right ends of the upper inclined rear plate 31 and the rear upper plate 20 are provided with vertically long locking holes a, f, f, a, respectively. Each of the wide and long vertically extending locking holes b is provided, and the left and right side plates 5 are further provided.
Before and after the upper side of 0.50 (left side or right side in FIG. 3A),
Inverted U-shape with both vertical portions bulging (in FIG. 3A, horizontal U-shape with both horizontal portions bulging) are provided, respectively. A U-shaped (horizontal U-shaped in FIG. 3A) locking projections d are provided before and after the lower side (the left side or the right side in FIG. 3A), respectively. Stackable paper container blank with normal printing height 1.2mm on the front side
Using a cosmetic E corrugated paper with water resistance,
In the punching process using the same normal punching die as in Example 1, the length, width, and depth of storing vegetables, fruits, and the like is 32 × 46 ×
A 9 cm stackable paper container blank of Example 2 was made.

Next, the fold line of the stackable paper container blank shown in FIG. The left and right side inner plates 51, 51 are folded, and the locking projections d, d of the left and right side inner plates 51, 51 are inserted and locked into the stacked locking holes b, b of the bottom plate 40, respectively. Next, while folding the upper oblique front plate 31 and the upper oblique rear plate 31, the left and right side plates 50, 50 and the left and right side surfaces are inserted into the locking holes f, f between the upper oblique front plate 31 and the upper oblique rear plate 31. Both upper corners with the inner plate 51
The front upper surface plate 20 and the rear upper surface plate 20 are folded over, and the left and right side plates 50 · are inserted into the locking holes a · a between the front upper surface plate 20 and the rear upper surface plate 20. The 50 stacking locking projections c, c were inserted and locked, respectively, to produce a stackable paper container of Example 2 in the shape of a flat rectangular parallelepiped tray shown in FIG. 3B.

Next, in the stackable paper container shown in FIG. 3B, heavy vegetables and fruits are stored, and the center of the bottom plate 40 of the stackable paper container shown in FIG. 3B is wide. Inverted U-shape in which both vertical portions of the left and right side plates 50, 50 of the lower stackable paper container similarly contain vegetables, fruits, etc. in the vertically long stacking locking holes b, b. The stack-shaped locking projections c, c are inserted and locked through the locking holes a, a of the front upper surface plate 20 and the rear upper surface plate 20, respectively. The stacking projections c, c can be easily inserted into the vertically long stacking locking holes b, b, respectively. Inverted U-shaped stacked locking projections c, c with both vertical portions bulging out form stacked locking holes b, b. They can be securely connected to each other, and can be stacked easily and securely for truck transport and store display / sales.Easy to assemble and stack, and can be stacked in a flat rectangular parallelepiped tray shape. A paper container was obtained.

Subsequently, in the stackable paper container shown in FIG. 3B, the front upper plate 20 and the rear upper plate are inserted and locked by the stacking fixing projections c, c of the left and right side plates 50, 50, respectively. 20 is strongly peeled upward, the connection holes a, a of the front upper surface plate 20 and the rear upper surface plate 20 and the connection locking protrusions c, c of the left and right side plates 50, 50 are respectively connected. The stopper is released, and the locking holes ff between the upper oblique front plate 31 and the upper oblique rear plate 31 and the upper corners of the left and right side plates 50, 50 and the left and right side inner plates 51, 51, Each lock is released, and can be easily returned to the flat state before assembly and stored as in the first embodiment. A stackable paper container in the shape of a flat rectangular parallelepiped tray that can be reused at all is obtained.

In the stackable paper container of this embodiment, appropriate ventilation and water permeability are required to accommodate fresh vegetables and fruits, and the front plate 30 and the bottom plate are required. A plurality of ventilation / water holes (not shown) are provided on the rear plate 40 and the rear plate 30 so as not to impair the strength of the stackable paper containers.

Further, in the stackable paper containers of the first and second embodiments, when the trucks are stacked in multiple stages and transported by truck, the bottom having the vertically long stacking locking holes b and b at the left and right ends respectively. A cover plate 60 having substantially the same shape as that of the face plate 40, for example, as shown in FIG. 4, can be placed on the uppermost stackable paper container as required.

[0029]

As described above, the stackable paper container of the present invention can be manufactured at a low cost and can be processed and disposed at the time of disposal instead of the conventional stackable plastic container. Easy-to-stack paper containers that hold heavy vegetables, fruits, seafood and various parts, and can be stacked so that they do not shift, and can be transported by truck or displayed and sold in stores. It is possible to provide a flat rectangular parallelepiped tray-like stackable paper container which is easy to use and can be reused many times.

[Brief description of the drawings]

FIG. 1A is a plan view of a stack of stackable paper containers according to a first embodiment of the present invention, and FIG.
FIG. 3 is a perspective view of a stackable paper container.

FIG. 2 is a partial plan view of a stack of stackable paper containers according to another embodiment of the present invention.

3A is a plan view of a stack of stackable paper containers according to a second embodiment of the present invention, and FIG.
FIG. 3 is a perspective view of a stackable paper container.

FIG. 4 is a perspective view of a stackable paper container according to a second embodiment, showing a state of being stacked in multiple stages and transported by truck.

FIG. 5 is a perspective view of a conventional stackable plastic container.

FIG. 6 is a perspective view of a conventional stackable paper container commonly called a birch pack.

[Explanation of symbols]

 Reference Signs List 20 front upper plate / rear upper plate 21 notch for opening expansion 30 front plate / rear plate 31 upper front plate / rear upper rear plate 32 folding piece 33 connection piece 40 bottom plate 50 Side plate 51 ... Left and right side inner plates 52 ... Finger hook opening 60 ... Cover plate a, f ... Lock hole b ... Stack lock hole c ... Stack lock protrusion d ... Lock protrusion e ... Auxiliary lock protrusion g ... Valley Folding line

Claims (3)

[Claims] 1. A front upper plate 20, a front plate 30, a bottom plate 40, a rear plate 30, and a rear upper plate 20 are sequentially connected via a fold line, and left and right sides of the bottom plate 40 Side plate 5
A flat rectangular parallelepiped tray-shaped paper container in which 0.50 and left and right side inner plates 51 and 51 are sequentially connected via a fold line, respectively, wherein left and right ends of a front upper plate 20 and a rear upper plate 20 are provided. In addition, vertically long locking holes a, a are provided respectively, and vertically stacked locking holes b, b are provided before and after the left and right ends of the bottom plate 40, respectively, and the upper side of the left and right side plates 50, 50 is further provided. Before and after, the inverted U-shaped stacked locking projections c, c are provided respectively, and before and after the lower side of the left and right side inner plates 51, 51,
The U-shaped locking projections d, d are provided, respectively, and first, the left and right side inner plates 51, 51 are folded into the left and right side inner plates 51, 51.
The 51 locking projections d, d are stacked with the stacked locking holes b,
b, respectively, and are locked. Then, the front upper surface plate 20 and the rear upper surface plate 20 are folded over, and the front upper surface plate 20 and the rear upper surface plate 2 are folded.
A stackable paper container characterized in that the stacking locking projections c, c of the left and right side plates 50, 50 are respectively inserted and locked in the locking holes a, a with 0. 2. One or two or more inverted U-shaped auxiliary locking projections e, e are provided on upper sides of the front plate 30 and the rear plate 30.
The stackable paper container according to claim 1, wherein e is provided. 3. The stackable paper container according to claim 1, wherein the space between the front upper plate 20 and the front plate 30 and the rear plate 30 are different from each other.
An upper oblique front plate 31 and an upper oblique rear plate 31 are connected between the upper oblique front plate 31 and the upper oblique rear plate 31, respectively. At the end portions, vertically long locking holes f and f are provided, respectively, so that the upper oblique front plate 31 and the upper oblique rear plate 31 are folded while the upper oblique front plate 31 and the upper oblique rear plate 31 are folded over. A stackable paper container wherein upper and lower corners of left and right side plates 50, 50 and left and right side inner plates 51, 51 are respectively inserted into and fastened to ff.