JPS588657Y2 - Easy opening box - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to an easy-to-open structure for boxes made of cardboard or paperboard.

Recently, as the packaging work of boxes using cardboard or paperboard has been automated, the opening of the box has come to be closed by adhesive bonding on the bottom, lid flap, etc.

As a result, it has become difficult to open the box, and simple opening structures have been proposed, such as pasting cut tape on each side wall of the box or carving cut lines with perforations, but the former requires special processing. Both methods had drawbacks, such as higher costs and the latter weakening the strength of the box.

The present invention overcomes these drawbacks and provides a new, easy-to-open box that has improved mechanical suitability for packaging automation and allows the lid to be opened and closed even after opening.

The present invention will be specifically explained below with reference to illustrated embodiments.

FIG. 1 is a developed view showing an embodiment of the present invention, in which a cover plate 1, a side plate 2, a bottom plate 3, a side plate 4 are connected in one direction, an adhesive piece 5 is connected to the side edge of the cover plate 1, and a cover plate 1 is connected to the side edge of the cover plate 1. Inner flaps 6 and 7 are connected to the upper and lower edges of the bottom plate 3, respectively, and outer flaps 8 and 9 are connected to the upper and lower edges of the side plates 2 and 4, respectively.

Next, on the adhesive piece 5 and the inner flap 6.6, a substantially trapezoidal insert piece 10 with a base at each edge of the cover plate 1 is formed with dotted cutting lines, and on the side edge of the side plate 4, a push-in cutting piece is formed. A notch 11 is provided.

Note that the reference numeral 12 indicates a broken line. The box of the present invention is constructed as described above and is mainly used for automatic packaging by a packaging machine, and is assembled as follows during the product packaging process.

First, as shown in FIG. 2, the adhesive piece 5, the lid plate 1, the bottom plate 3, and the side plates 2, 4 are folded into a rectangular tube shape along the fold line 12, and the adhesive piece 5 is folded into the first
The hatched area in the figure is used as the bonding area, and the side plate 4 is bonded with adhesive.Then, the inner flaps 6 and 7 are bent inward, and the outer flap 8.9 is bent on top of that, and the inner flap is bonded using the shaded area as the bonding area. Glue the outer flap.

In addition, in the above packaging process, when the inner flap 6 is folded inward, the dotted cutting line a forming the insert piece as shown in FIG.
is carved in a straight line, the inner flap 6 is engraved with a fold line 12.
It is not bent at the point , but it is bent at the point a, which is particularly inconvenient in the case of automatic packaging.

In this respect, when the dotted cut lines are carved in a trapezoidal shape as in the present invention, the inner flap 6 can be reliably folded even in automatic packaging.

This also applies to the case where the adhesive piece 5 is bent.

In this way, a box as shown in FIG. 3 is completed.

When opening the package next time, push the insert pieces 10 firmly into the box using the push-in notches 11, and then pull them upwards, so that each insert piece 10 meets the adhesive piece 5 and the inner flap 6, respectively. The container is separated through the casing, and is in an unsealed state as shown in FIG.

Furthermore, after opening, the box can be used as a box that can be opened and closed using the cover plate 1 via each insertion piece 10.

[Brief explanation of the drawing]

Fig. 1 is a developed view showing an embodiment of the present invention, Fig. 2 is a perspective view showing the assembly process of the above, Fig. 3 is a perspective view showing the same in the assembled state, Fig. 4 is a perspective view showing the same in the unsealed state, FIG. 5 is an explanatory perspective view showing an embodiment not based on the present invention. 1...Lid plate, 2...Side plate, 3...
...Bottom plate, 4...Side plate, 5...Adhesive piece, 6,7...Inner flap, 8゜9...
Outer flap, 10...Insert piece, 11...
...Notch for pushing, 12...Fold line.

Claims (1)

[Scope of utility model registration request] The lid plate 1 side plate 2 bottom plate 3 side plate 4 are connected in one direction, adhesive pieces 5 are attached to the side edges of the lid plate 1, and inner flaps 6 are attached to the upper and lower edges.
6 and the adhesive piece 5 and the inner flap 6.6.
On top is a substantially trapezoidal insert piece 1 whose base is each milled edge of the cover plate 1.
0 are shaped by dotted lines, inner flaps 7.7 are connected to the upper and lower edges of the bottom plate 3, outer flaps 8, 8, 9.9 are connected to the upper and lower edges of the side plates 2 and 4, respectively, and the side plates A push-in notch 11 is provided on the side edge of the inner flap 6, the adhesive piece 5 is glued to the side plate 4, and the inner flap is bent inward.
A simple opening box characterized in that when outer flaps 8, 8, 9.9 are bonded to form a box body, adhesive pieces 5 and inner flaps 6.6 are bonded at locations other than the insertion pieces 10.