JP2003335323A - Packaging box with opening assisting ruled line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily open a packaging box sealed by sticking flaps together. <P>SOLUTION: The packaging box is sealed by sticking together inner flaps 3 and outer flaps 4, which are extended from pairs of end walls 1 and side walls 2, respectively. On a part where the outer flaps 4 do not overlap the inner flaps 3, V-shaped sloped folding lines 5 are formed, with the open parts of the V-shapes widen toward the edges of the outer flaps and flexible parts 6 are formed inside the V-shapes, respectively. Pressing in the flexible parts 6 forms a gap between both ends of the outer flaps 4, which makes it possible to open the box easily by inserting fingers into the gap. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging box which is sealed by flaps attached to each other and has an improved unsealing property.

[0002]

2. Description of the Related Art Generally, in order to pack articles, as shown in FIG. 5, an inner flap 3 and an outer flap 4 extending from a pair of end walls 1 and side walls 2 are attached to each other with a hot melt adhesive. Corrugated cardboard packaging boxes are used. The packaging box is opened by peeling the outer flap 4 from the inner flap 3.

[0003]

However, in the above packaging box, there is a problem that when opening, it is difficult for fingers to enter between the tips of the outer flaps 4 abutted against each other, and it is difficult to open the packaging box. There is.

[0004]

In order to solve the above problems, according to the present invention, in a packaging box in which an inner flap and an outer flap extending from a pair of end walls and side walls are bonded and sealed, the outer flap is provided. The V-shaped diagonal creases that spread toward the edges were placed in the portions that did not overlap the inner flaps, and the flexible portion was formed inside them.

In this packaging box, when the flexible portion is pushed in, a gap is formed between the tips of the outer flaps, so that a finger can be put in the gap to easily open the packaging.

Further, when a center folding rule is inserted in the center of the flexible portion from the valley of the V-shaped diagonal folding rule to the edge of the outer flap, the flexible portion is bent along the center folding rule. , Easier to push, and easier to open.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

This packaging box is made of corrugated cardboard, and as shown in FIG. 1, an inner flap 3 and an outer flap 4 are extended from a pair of end walls 1 and side walls 2, respectively, and the inner flap 3 and the outer flap 4 are separated from each other. It is configured to be stuck and sealed.

Each of the outer flaps 4 is provided with a V-shaped oblique folding ruled line 5 that widens toward the edge, and the flexible portion 6 is provided inside thereof.
Are formed. Further, in the center of the flexible portion 6, a center folding rule 7 is put from the valley of the oblique folding rule 5 to the edge of the outer flap 4.

In such a packaging box, when opening the package, as shown in FIG.
As shown in, when the flexible portion 6 of the one outer flap 4 is pushed in, the flexible portion 6 bends downward along the oblique folding ruled line 5 and the center folding ruled line 7, and a gap is formed between the tips of the outer flaps 4. it can.

Then, when a finger is put into the above-mentioned gap, the flexible portion 6 of the other outer flap 4 is pulled up, and a hand is deeply inserted into the enlarged gap, the outer flap 4 is peeled off from the inner flap 3 to facilitate the operation. It can be opened.

If the corrugated cardboard material is thin and easily bent, the flexible part 6 can be easily pushed in even if the center folding rule 7 is omitted. Even if it is formed only on the flap 4, the unsealing property is ensured.

Further, in this packaging box, since the flexible portion 6 can be processed by flexogluer at the time of manufacturing, it can be manufactured without changing the conventional process, and since the cutting edge is not inserted when processing the flexible portion 6, The packaging strength does not decrease.

Further, in the case where this packaging box is manufactured by punching, as shown in FIG. 3, when the crushing portions 8 and 9 from the front and back are provided at the tip portion of the flexible portion 6, the outer flap 4 is provided. Since there is a step at the abutting part of the tip, it is easy for a finger to catch when opening. Even if the crushed portion 9 on the back surface side is omitted, a similar step can be formed.

In addition, as shown in FIG. 4, when the flexible portions 6 are formed in multiple layers, for example, the head of the plastic bottle P, which is a stored item, contacts the outer flexible portion 6 and the outer flexible portion 6 is reached. Even if the sheet is hard to bend, the inner flexible portion 6 bends, so that the unsealing property can be secured.

[0016]

As described above, in the packaging box according to the present invention, since the flexible portion is formed by inserting the auxiliary ruled portion in the portion of the outer flap that does not overlap the inner flap, the gap formed by pushing the flexible portion is formed. You can easily open it by putting your finger on it.

[Brief description of drawings]

FIG. 1 is a perspective view of a packaging box according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the opening process of the above.

FIG. 3 is a perspective view showing an embodiment in which a flexible portion is provided with a crushing portion.

FIG. 4 is a perspective view showing an embodiment in which a flexible portion is multiply formed in the same as above.

FIG. 5 is a perspective view showing a conventional packaging box.

[Explanation of symbols]

1 end wall 2 side walls 3 inner flap 4 outer flap 5 diagonal folding lines 6 Flexible part 7 center folding ruled lines 8,9 crushed part

Claims (2)

[Claims] 1. In a packaging box in which an inner flap 3 and an outer flap 4 extending from each pair of end walls 1 and side walls 2 are bonded and sealed, a portion of the outer flap 4 that does not overlap the inner flap 3 is provided. An unsealing-assisted ruled packaging box in which a V-shaped oblique folding ruled line 5 that spreads toward the edge is inserted and a flexible portion 6 is formed inside thereof. 2. A center folding ruled line 7 is inserted in the center of the flexible portion 6 from the valley of the V-shaped diagonal folding ruled line 5 to the edge of the outer flap 4. A box with an auxiliary marking line for unsealing described in.