JP2003267353A - Packaging box with unsealing function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging box which is easy to unseal and re-sealable. <P>SOLUTION: The packaging box comprises peripheral walls formed of respective pairs of end plates 1 and side plates 2, inner flaps 6 extending from an upper rim of the end plates 1 and outer flaps 7 extending from an upper rim of the side plates 2 which are stuck via an adhesive for sealing the box. The outer flap 7 has a cut line 8 extending from its tip to an outer side rim of a base while bypassing an adhesive applied portion 13. A part inward from the cut line 8 of the flap 7 is made into a tear-open part 9, and an engaging piece 10 with the inner flap 6 is provided at both sides of the tip of the part 9. <P>COPYRIGHT: (C)2003,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 in which an inner flap and an outer flap are bonded together and sealed, and a function of easily opening the packaging box is added.

[0002]

2. Description of the Related Art Generally, when packaging an article, a corrugated cardboard box is used in which an inner flap extending from a side plate and an outer flap extending from an end plate are bonded together with a hot melt adhesive and sealed. When opening the corrugated cardboard box, the outer flap is peeled off from the inner flap by putting a hand in the abutting portion and pulling up.

[0003]

However, in the cardboard box as described above, since the hot melt adhesive has a strong adhesive force, a large force is required for opening, and the flap may be torn at that time. There is also the inconvenience that it cannot be resealed without using adhesive tape or the like.

Therefore, an object of the present invention is to provide a packaging box which can be easily opened and can be resealed.

[0005]

In order to solve the above-mentioned problems, the present invention is directed to an inner flap that forms a peripheral wall from a pair of end plates and side plates, and extends from the upper edges of the end plates, and an upper edge of the side plates. In a packaging box in which the outer flap that has been extended from the above is bonded and sealed with an adhesive, in the outer flap, make a cut line from the leading edge of the outer flap to the outer edge of the base, avoiding the adhesive application part, and cut the outer flap cut line. The inner side portion is used as a cutout portion, and engaging pieces for the inner flap are provided on both sides of the tip of the cutout portion.

In this packaging box, when a hand is put in the abutting portion of the outer flap, the outer flap is pulled up and the score line is cut, the cutout portion of the outer flap and the inner flap are separated without peeling off the adhesive application portion. It can be opened.

After opening, the inner flap and the outer flap are closed, and the engaging piece provided in the cutout portion of the outer flap is pushed below the inner flap to reseal.

It should be noted that the inner flap and the outer flap are provided with cut lines and hinge lines surrounding the adhesive application portion, and the inner portion thereof is used as a pushing piece, and the tip of the pushing piece of the inner flap is engaged with the outer flap. May be provided.

In this case, if the pushing piece is pushed in to cut the score line, the opening can be opened without peeling off the adhesive application portion.

Further, when the pushing piece is pulled up and the engaging portion is mounted on the outer flap, resealing can be performed.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION First, a first embodiment of the present invention will be described with reference to FIGS.

In the blank shown in FIG. 1, each pair of end plates 1
And side plates 2 are alternately arranged, and a passage 3 is continuously formed on the outer edge of one side plate 2. Inner flaps 4 and outer flaps 5 are connected to the lower edges of the end plates 1 and the side plates 2, respectively.
An inner flap 6 and an outer flap 7 are connected to the upper edges of the end plate 1 and the side plate 2, respectively.

A zipper-shaped cut line 8 extending from the leading edge to the outer edge of the base is formed on both sides of the outer flap 7, and a portion inside the cut line 8 of the outer flap 7 is a cut portion 9. . Engagement pieces 10 are provided on both sides of the tip of the cutout portion 9, two notches 11 are provided on the tip edge of the inner flap 6, and a handle hole 12 is provided in the end plate 1.

In order to assemble the blank and wrap the article, as shown in FIG. 2, each pair of end plates 1 and side plates 2 is bent into a rectangular tube shape, and a passage 3 is attached to the end plate 1 on the opposite side. A peripheral wall is formed by attaching the inner flap 4 and the outer flap 5 with a hot melt adhesive to close the bottom surface.

After the articles are stored in the box, the inner flap 6 and the outer flap 7 are pasted together by spraying a hot melt adhesive onto the adhesive application portion 13 outside the cut line 8 to seal the top surface. Stop.

On the other hand, when the packaging box is opened, a hand is put in the abutting portion of the outer flap 7, the outer flap 7 is pulled up and the score line 8 is cut, as shown in FIG.

Thus, as shown in FIG. 4, the slit 9 of the outer flap 7 is formed without peeling off the adhesive applying portion 13.
The inner flap 6 can be opened.

After opening, as shown in FIG. 5, the inner flap 6 and the outer flap 7 are closed and the engaging pieces 10 are pushed below the inner flap 6 to reseal them. it can.

At this time, even if the tip of the engaging piece 10 is crushed to some extent, the base of the engaging piece 10 meshes with the notch 11, so that the sealed state is maintained.

Next, a second embodiment of the present invention will be described based on FIGS. 6 to 10, focusing on the differences from the first embodiment.

In the blank of this packaging box, as shown in FIG. 6, the perforation line 14 from the front edge of the inner flap 6 is perforated.
Are inserted, and the base ends of the cut lines 14 are connected by a hinge line 15. Inner portions of the cut line 14 and the hinge line 15 are push-in pieces 16, and engaging portions 17 are provided on both sides of the tip.

Further, the inner flap 7 has perforated cut lines 18 in a deformed U-shape from the front end edges of both side portions, and the inner portion thereof serves as a pushing piece 19.

When assembling this blank to wrap the article, as shown in FIG. 7, the inner flap 6 and the outer flap 7 are attached to each other by the adhesive applying section 1 in which the pushing pieces 16 and 19 overlap each other.
A hot melt adhesive is sprayed onto 3 to be stuck together.

On the other hand, when opening this packaging box,
As shown in FIG.
When the pushing pieces 16 are cut, the pushing pieces 16 swing downward with the hinge wire 15 as an axis with the pushing pieces 19 attached to the upper surface.

As a result, the outer flap 7 and the inner flap 6 can be opened as shown in FIG. 9 without peeling off the adhesive application section 13.

After opening, as shown in FIG.
The inner flap 6 and the outer flap 7 are closed, the pushing piece 16 is pulled up, and the engaging portion 17 rides on the outer flap 7, whereby resealing can be performed.

[0027]

As described above, in the packaging box according to the present invention, a cut line is formed on the outer flap while avoiding the adhesive application portion,
Or, the outer flap and the inner flap have cut lines surrounding the adhesive application part to form a pressing piece, so by opening the outer flap or pushing the pressing piece, you can open without opening the adhesive application part. You can

Further, since the engaging piece is provided at the cutout portion of the outer flap or the engaging portion is provided at the pushing piece of the inner flap, the inner flap and the outer flap are engaged with each other after opening to reseal. can do.

[Brief description of drawings]

FIG. 1 is a diagram showing a blank of a packaging box according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a packaging state of the same.

FIG. 3 is a perspective view showing the opening process of the above.

FIG. 4 is a perspective view showing an opened state of the above.

FIG. 5 is a perspective view showing the resealing state of the above.

FIG. 6 is a view showing a blank of the packaging box according to the second embodiment of the present invention.

FIG. 7 is a perspective view showing a packaging state of the above.

FIG. 8 is a perspective view showing the opening process of the above.

FIG. 9 is a perspective view showing an opened state of the same.

FIG. 10 is a perspective view showing the re-sealing state of the above.

[Explanation of symbols]

1 end plate 2 side plates 6 inner flap 7 Outside flap 8 score lines 9 Cutout 10 engagement pieces 13 Adhesive application section 14,18 score lines 16,19 Pushing piece 17 Engagement part

Claims (2)

[Claims] 1. An inner flap 6 extending from the upper edge of the end plate 1 and an outer flap 7 extending from the upper edge of the side plate 2 are bonded to each other by forming a peripheral wall from each pair of end plates 1 and side plates 2. In a packaging box that is bonded and sealed with an agent, a cut line 8 is provided on the outer flap 7 from the tip edge thereof to the base outer edge while avoiding the adhesive application portion 13, and the portion inside the cut line 8 of the outer flap 7 is inserted. A packaging box with an unsealing function, characterized in that the slit 9 is provided, and engaging pieces 10 for engaging the inner flap 6 are provided on both sides of the tip of the slit 9. 2. An inner flap 6 extending from the upper edge of the end plate 1 and an outer flap 7 extending from the upper edge of the side plate 2 are bonded to each other by forming a peripheral wall from each pair of the end plate 1 and the side plate 2. In a packaging box that is bonded and sealed with an adhesive, the inner flap 6 and the outer flap 7 are provided with cut lines 14 and 18 surrounding the adhesive application portion 13.
And the hinge wire 15 are inserted, and the inner portion thereof is pushed in by the pushing piece 16,
19. A packaging box with an opening function, wherein the inner flap 6 is provided with an engaging portion 17 for engaging the outer flap 7 at the tip of the pushing piece 16 of the inner flap 6.