JP3590379B2 - Simple sealing cardboard box - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple sealing cardboard box which is sealed by engaging a flap.
[0002]
[Prior art]
As shown in FIG. 5, as a cardboard box for storing agricultural products such as cabbage and pumpkin, short end flaps 52 and side flaps 53 extend from a pair of end walls 50 and side walls 51, respectively. Are used, an opening is left on the top surface when they are overlapped.
[0003]
In this cardboard box, a pull-up piece 55 having projections 54 formed on both sides by cutting the end flap 52 is formed. When the pull-up piece 55 is pulled up while being bent, the protrusion 54 rides on the side flap 53 and the end flap 52 And the closed state of the side flap 53 is maintained.
[0004]
[Problems to be solved by the invention]
By the way, the cardboard box can be sealed without driving in staples even when the agricultural products are stored so as to swell, but the protrusion 54 of the pull-up piece 55 is easily bent. The rebound cannot be suppressed, and the side flap 53 and the end flap 52 may open.
[0005]
Then, this invention makes it a subject to provide the cardboard box which can engage and seal a flap reliably.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention relates to a cardboard box in which an end flap and a side flap are respectively extended from a pair of end walls and side walls, and a side flap is overlapped with the end flap, and an opening remains on a top surface. A pull-up piece is formed between the pair of cuts at the end of the end flap, and a pressure-receiving piece is formed at the tip of the side flap. The two end portions of the end flap ride on the pressure piece to maintain the closed state of the end flap and the side flap.
[0007]
In this cardboard box, since both ends of the pull-up piece that rides on the pressed piece are hard to bend, the pull-up piece and the pressed piece are securely engaged and sealed.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0009]
In the blank of the cardboard box, as shown in FIG. 1, each pair of end walls 1 and side walls 2 are alternately provided continuously, and a passage piece 3 is continuously provided on an outer edge of one side wall 2. An end flap 4 and a side flap 5 for closing the bottom face are connected to a lower edge of the end wall 1 and the side wall 2, and an end flap 6 and a side flap 7 for sealing are connected to the upper edge.
[0010]
A pull-up piece 9 sandwiched between a pair of cuts 8 is formed at the tip of the end flap 6. Further, the end flap 6 is provided with a ruled line 10 for facilitating the bending of the lifting piece 9. On the other hand, both side edges of the side flap 7 are cut obliquely, and a pressure-receiving piece 11 is formed at the tip of the side flap 7.
[0011]
In order to assemble such a blank into a box, as shown in FIG. 2, each pair of end walls 1 and side walls 2 are bent into a rectangular tube shape, and the joint piece 3 is attached to the end wall 1 on the opposite side. Then, the lower end flap 4 and the side flaps 5 are sequentially bent inward and stuck together to close the bottom surface.
[0012]
Then, after storing the contents, the upper end flap 6 and the side flaps 7 are sequentially bent inward, and as shown in FIGS. Both ends of the upper piece 9 ride on the pressure piece 11 so that the closed state of the end flap 6 and the side flap 7 is maintained.
[0013]
At this time, since both ends of the pulling piece 9 riding on the pressed piece 11 do not protrude to the side unlike the above-described conventional example, it is difficult to bend and the pulling piece 9 and the pressed piece 11 are securely engaged. Sealed together.
[0014]
In addition, since the cardboard box can be manufactured by flexo-glure, and the punching die only needs to add a partial die, no processing cost is required.
[0015]
【The invention's effect】
As described above, in the cardboard box according to the present invention, with the lifting of the pulling piece formed between the cuts of the end flaps, both ends of the pulling piece that is hard to be bent ride on the pressure piece and the end flap and the side flap. Since the closed state is maintained, the lifting piece and the pressed piece are securely engaged with each other and sealed.
[Brief description of the drawings]
FIG. 1 is a view showing a blank of a cardboard box according to the present invention. FIG. 2 is a perspective view showing a sealing process of the same. FIG. 3 is a perspective view showing a sealed state of the same. FIG. Side view [Figure 5] Perspective view showing the sealed state of a conventional simple sealing cardboard box [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 End wall 2 Side wall 6 End flap 7 Side flap 8 Cut 9 Lifting piece 10 Ruled line 11 Pressure piece

Claims (1)

When the end flaps 6 and the side flaps 7 extend from the pair of end walls 1 and the side walls 2 respectively, and the side flaps 7 are superimposed on the end flaps 6, the end flaps 6 of the end flaps 6 are formed in a cardboard box having an opening remaining on the top surface. A pull-up piece 9 sandwiched between a pair of cuts 8 is formed at the distal end, and three ruled lines 10 are provided so as to concentrate from the pull-up piece 9 to the base of the end flap 6. The folding line 9 is folded in a mountain, the ruled lines 10 on both sides are folded in a valley, and the pulling piece 9 is easily bent. Further, a pressure-receiving piece 11 is formed at the tip of the side flap 7, and both sides of the side flap 7 are formed. When the edge is cut obliquely and the pull-up piece 9 is pulled up while being bent, both ends of the pull-up piece 9 ride on the pressure piece 11 so that the closed state of the end flap 6 and the side flap 7 is maintained. A simple sealed cardboard box characterized by the following.

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