JPH02242735A - Cardboard box - Google Patents

Abstract

PURPOSE:To prevent a deflection due to a force in the diagonal direction of a box from being generated by bonding respective parts with each other of nearly triangle shapes provided at flaps, separating the nearly triangle parts from the flap body, keeping the triangle parts in a bonded state, on unpacking, and by keeping the angle made by the adjacent side faces to be nearly right angles. CONSTITUTION:Insertion pieces 2 and insertion holes 3 are provided on four upper flaps 1 attached continuously to side plates and nearly triangular jointing pieces 4 are provided at the position near the side face of the both sides of the upper flaps 1. The joining pieces 4 are parted from the upper flaps 1 by partition grooves 8 and the upper part of the partition groove 8 is provided at the inner side of the upper flap edge to constitute joining parts 9. The joining parts 9 should have enough strength for the joining pieces 4 to move together with the upper flap 1 and further an appropriate strength for the joining part 9 to break easily when the upper flap 1 is moved with the bonded state of the adjacent joining pieces 4. Respective side faces adjacent to each other faces are fixed at nearly right angles by the jointing pieces 4. In this way, it is hard for an external force to cause a deflection.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cardboard packaging box, and more particularly, to a cardboard box having a sealing method that does not cause distortion of the box and can be resealed.

(Prior art) The most commonly used conventional cardboard boxes are JIS Z1507 A type, and when resealing is required, the 1982 Utility Model
No. 87019 and other flap insertion type boxes were used.

[Problem to be solved by the invention]

Among the conventional technologies mentioned above, A-type packaging boxes use less cardboard and are advantageous in terms of strength, but they have the problem of not being able to be resealed. Because there is no resistance to compression and rotation between the corners and vertical edges, distortion is likely to occur, so the packaging box is easily deformed due to handling, etc., and the box's ability to protect the contents is insufficient due to the small impact absorption capacity of the box when dropped. The problem was that it was easy to do.

The object of the present invention was not achieved by the above-mentioned prior art.
To provide a cardboard box having both functions of resealability and prevention of box distortion.

[Means to solve the problem]

In order to achieve the above purpose, the top flap of the cardboard box is made into a plug-in type, and approximately triangular parts are provided on both sides of the part where the top flap connects to the side, and this approximately triangular part is used as the flap. When folding the flap, it moves together with the flap, but if the triangular parts on both sides are glued together, it leaves a connection that is strong enough to easily break when force is applied to the flap. The structure should be separate from the flap body.

(Function) When sealing the box, if the approximately triangular parts provided on the flap are glued together, when the box is unpacked, the approximately triangular parts will be separated from the flap body while maintaining the bonded state, and the adjacent parts will be separated from the flap body. It works to keep the angle between the sides at approximately 90 degrees.

For this reason, the box is less likely to be distorted by force in the diagonal direction, and the shock absorption ability is likely to be reduced.

C Embodiment] An embodiment of the present invention will be described below with reference to FIG. 1 and the following figures.

FIG. 1 shows the top flap 1 of a packaging box to which the present invention is applied when it is unpacked, with the approximately triangular joint piece 4 being separated from the top flap 1 and maintaining the shape of the box. It shows.

In conventional packaging boxes, the top flap 1 is fixed with a stitcher 7, as shown in FIG. 2, and it is necessary to remove the stitcher 7 to unpack the box upward.

Figure 3 is an example of a developed view of a box to which the present invention is applied.

The four upper flaps 1 connected to the side plates are provided with insertion pieces 2 and insertion holes 3, and approximately triangular joint pieces 4 are provided near the side surfaces on both sides of the upper flap 1.

The joint piece 4 is separated from the upper flap 1 by a separation groove 8, and the upper end of the separation groove 8 is located inside the end of the upper flap 1, forming a connecting portion 9. This connecting portion 9 has enough strength to allow the joining piece 4 to move together with the upper flap l when the upper flap 1 is moved, and also has enough strength to move the upper flap l while the adjacent joining pieces 4 are pasted together. The strength must be such that the connecting portion 9 can be easily cut when the connecting portion 9 is cut. An enlarged view of this part is shown in FIG.

Further, at least the upper cushion 10 is made by cutting all the parts corresponding to the subordinate ridges of one box into a triangular shape.

The procedure for assembling the packaging box of the present invention is as shown in FIGS. First, combine the lower tray 5 and the bottomless box,
Lower cushion (not shown), product 11, upper cushion 1
0 is inserted as shown in Figure 6.9 Next, fold up the upper flap 1 on the longitudinal side, insert the insertion piece 2 into the insertion hole 3 with adhesive applied to the joint piece 4, and apply pressure from above. .

The joining pieces 4 join together. FIG. 8 shows a state in which the PP band 6 is applied to this corner, and the packaging is completed.

There are two ways to unpack this package, one is to remove the lower tray 5, and the other is to open the upper flap 1.However, the lower tray 5 is usually glued to the side of the box and leaves traces when removed. If repacking is necessary, open the top flap 1 and unpack.

When the insertion piece 2 of the upper flap 1 is pulled out from the insertion hole 3 and lifted upward, the connecting portion 9 at the end of the separation groove 8 is broken and the upper flap 1 is raised up, as shown in FIG. The first state is when all upper flaps 1 have been raised.
The figure shows that the contents can be removed. In this state, it can be easily repackaged.

According to this embodiment, since the adjacent sides of the box are fixed at an angle of approximately 90 degrees by the joint piece 4, loosening due to external force is difficult to occur, and since it is an insertion method, repacking is easy. Is possible.

〔Effect of the invention〕

According to the present invention, since the adjacent side walls of one corrugated box are held at an angle of approximately 90 degrees, distortion is less likely to occur even if force is applied between the vertical and diagonal edges of the box.

Therefore, the impact absorption effect and cargo handling resistance are also improved.

Furthermore, since it is a flap insertion type, it has resealability and can be easily returned to its original shape even after unpacking.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a perspective view of a conventional packaging example, Fig. 3 is a developed view of the embodiment, Fig. 4 is an enlarged view of main parts, and Fig. 5 is a cushioning material. Perspective views of Figure 6, Figure 7, Figure 8
The figure is a perspective view showing the packaging process, and FIG. 9 is a perspective view during unpacking. DESCRIPTION OF SYMBOLS 1... Upper flap, 2... Insertion piece, 3... Insertion hole, 4... Joining piece, 8... Separation groove, 9... Connection part. Assembling % 4 Figure J Near U” 1 A1 10◆ Entering Piece 2

Claims (1)

[Claims] 1. In a rectangular parallelepiped-shaped cardboard box made by folding a cardboard sheet, the top flap is made to be insertable, and is separated from the top flap by separation grooves on both sides of the base of the top flap, and interlocks with the top flap at the connecting part. 1. A corrugated box, characterized in that corner parts are reinforced by providing joint pieces that are connected in a manner similar to that shown in FIG.