JP2024036188A - packaging box - Google Patents

Abstract

To provide a packaging box which suppresses trunk swelling, and which can open the whole upper surface.SOLUTION: A packaging box 1 includes a box body 2 which includes: front and back end walls 20, 20 and left and right side walls 30, 30 continuously provided at an edge part of a bottom plate 10; and a top plate 40 continuously provided at upper edge parts of both side walls 30, 30. An upper flap 41 continuously provided at the top plate 40 is overlapped with the end wall 20. At the end wall 20, at the position where a lower edge part of the upper flap 41 is overlapped, a first opening hole 61 is formed. The upper edge parts of both side walls 30, 30 and left and right edge parts of the top plate 40 are continuously provided via cutting-off guide lines L1, L1 respectively.SELECTED DRAWING: Figure 2

Description

Application for application of Article 30, Paragraph 2 of the Patent Act has been filed. On March 30, 2020, the packaging box related to the invention was sold to Nisshin Oilio Group Co., Ltd.

The present invention relates to packaging boxes.

Some wrap-around cardboard packaging boxes have cutting guide lines that cross the middle portions of the front, left, and right walls in the height direction (for example, see Patent Document 1).
In the packaging box described above, by cutting the cutting guide line of the front wall body and pulling up the upper part of the front wall body, the cutting guide lines of the remaining walls can be sequentially cut open. The packaging box is opened by cutting the cutting guide line of each wall body and dividing the packaging box into an upper part and a lower part.

Patent No. 6754465

If the cutting guide line crosses the middle part of the wall in the height direction, as in the conventional packaging box described above, when a load is applied to the packaging box from above, the wall will turn outward. This makes it easier for the body to bulge, which causes the body to bulge out.

SUMMARY OF THE INVENTION An object of the present invention is to provide a packaging box that solves the above-mentioned problems, suppresses bulge, and allows the entire top surface to be opened when unpacking.

In order to solve the above problems, the present invention provides a packaging box including a bottom plate, front and rear end walls connected to the front and rear edges of the bottom plate, and front and rear end walls connected to the left and right edges of the bottom plate. It has a box body including left and right side walls and a top plate connected to the upper edges of the both side walls. An upper flap connected to the top plate is overlapped with the end wall. An opening hole is formed in the end wall at a position where the lower edge of the upper flap overlaps. The upper edges of the both side walls and the left and right edges of the top plate are connected to each other via cutting guide lines.

When opening the packaging box of the present invention, insert your finger into the opening hole in the end wall and pull up the upper flap and top plate, the left and right cutting guide lines are cut open, and the entire top plate is separated from both side walls. As a result, the entire top surface of the packaging box of the present invention opens when the packaging box is opened, making it easier to take out the contents from the packaging box.
Furthermore, in the packaging box of the present invention, since the cutting guide wire for opening is formed at the upper edge of the side wall, the side wall is difficult to swell outward when a load is applied to the packaging box from above.

When opening the packaging box of the present invention, the top plate is pulled up and the cutting guide line at the upper edge of the side wall is cut open, so even if another box body overlaps the outer surface of the side wall, the packaging box can be opened. Therefore, in the packaging box of the present invention, a plurality of the box bodies can be arranged and connected in the left-right direction.

The present invention is also applicable to a packaging box in which a joining piece is connected to the upper edge of the side wall via the cutting guide wire, and the joining piece is joined to the top plate. With this configuration, when the packaging box is opened, the joint piece is separated from the side wall together with the top plate, so that no joint piece remains at the opening of the packaging box after opening.

In the packaging box of the present invention, since the cutting guide line is formed on the upper edge of the side wall, it is possible to suppress the bulging of the body and to open the entire top surface when opening the box to make it easier to take out the contents.

FIG. 1 is a perspective view of a packaging box according to an embodiment of the present invention, viewed from the front upper left. FIG. 2 is a perspective view of the box according to the embodiment of the present invention, viewed from the front upper left. FIG. 2 is a perspective view of the box body according to the embodiment of the present invention, seen from the rear upper right. It is a figure showing the blank sheet of the box concerning an embodiment of the present invention. It is a perspective view showing a state where one box body is opened in a packaging box concerning an embodiment of the present invention. FIG. 2 is a perspective view showing a packaging box according to an embodiment of the present invention with both box bodies opened. It is a figure showing the blank sheet of the box concerning other embodiments of the present invention. It is a figure showing the blank sheet of the box concerning other embodiments of the present invention.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the following description, the front, rear, left, and right directions are set for convenience in explaining the packaging box of this embodiment, and do not limit the configuration or use condition of the packaging box.

As shown in FIG. 1, the packaging box 1 of this embodiment is made by connecting two box bodies 2, 2 side by side in the left-right direction.
As shown in FIG. 2, the box body 2 includes a bottom plate 10, front and rear end walls 20, 20 connected to the edge of the bottom plate 10, left and right side walls 30, 30, and upper edges of both side walls 30, 30. This is a wrap-around type corrugated box that is equipped with a top plate 40 connected to the top plate 40.
Although the contents accommodated in the box 2 of this embodiment are not limited, for example, a plurality of plastic bottles can be accommodated as contents.

As shown in FIG. 4, the box body 2 of the packaging box 1 is formed by mountain-folding or valley-folding a blank sheet S1 obtained by cutting out a cardboard sheet along each fold line. The blank sheet S1 shown in FIG. 4 is arranged so that the inner surface side can be seen.
The fold line of the blank sheet S1 is a ruled line (pressed line) formed by linearly pressing the surface of the blank sheet S1. Note that intermittent cuts may be formed in the ruled lines. This makes it easier to fold the blank sheet S1 along the ruled lines.
Alternatively, the folded line may be formed by intermittent half-cut slits that cut only the surface of the sheet or slits that penetrate through the sheet to form a linear shape.

Each cutting guide line formed on the blank sheet S1 is a perforated line in which cuts are formed intermittently. Note that the shape and length of the cut are not limited.

The bottom plate 10 is a rectangular flat plate, as shown in FIG. A left side wall 30 is connected to the left edge of the bottom plate 10 via a fold line, and a right side wall 30 is connected to the right edge of the bottom plate 10 via a fold line. The left and right side walls 30, 30 are the same square wall bodies, and are formed perpendicularly to the bottom plate 10.

Furthermore, front and rear lower flaps 11, 11 (see FIG. 3) are connected to the front and rear edges of the bottom plate 10 via a fold line, respectively. The lower flap 11 is a portion that is overlapped and joined to the lower part of the outer surface of an end wall 20, which will be described later.

As shown in FIG. 3, a top plate 40 is connected to the upper edge of the right side wall 30 via a right cutting guide line L1. In this way, the cutting guide line L1 is formed at the upper edge of the right side wall 30. The top plate 40 is a rectangular flat plate similar to the bottom plate 10, and is formed perpendicular to the right side wall 30.

As shown in FIG. 2, a joint piece 50 is connected to the upper edge of the left side wall 30 via a left cutting guide line L1. In this way, the cutting guide line L1 is formed at the upper edge of the left side wall 30.
The joint piece 50 is a band-shaped portion formed along the upper edge of the left side wall 30. The joining piece 50 is attached to the left end of the lower surface of the top plate 40. In the box body 2, the top plate 40 and the left side wall 30 are connected to each other via a joint piece 50.

In addition, the cutting guide line L1 of this embodiment is a perforation-like line in which a plurality of cuts are formed intermittently, and the rear end of each cut is inclined toward the top plate 40 side.

By bonding the joining piece 50 to the lower surface of the top plate 40 while bending the blank sheet S1 (see FIG. 4) along the bend line and cutting guide line L1, the bottom plate 10, the left and right side walls 30, 30, and the top plate 40 are formed into a rectangular tube shape. It is formed. Note that the joining piece 50 may be adhered to the upper surface of the top plate 40.

Furthermore, front and rear upper flaps 41, 41 (see FIG. 3) are connected to the front and rear edges of the top plate 40 via a fold line, respectively. The upper flap 41 is a portion that is joined to overlap the upper portion of the outer surface of the end wall 20, which will be described later.

The front end wall 20 includes left and right lateral flaps 21, 21. The left side lateral flap 21 is connected to the front edge of the left side wall 30 via a fold line, and the right side lateral flap 21 is connected to the front edge of the right side wall 30 via a line. The lateral flap 21 is bent perpendicularly to the side wall 30.

In this embodiment, the leading edges of the left and right horizontal flaps 21, 21 are butted against each other at the center of the front surface of the packaging box 1 in the left-right direction. Note that the end edges of the left and right horizontal flaps 21, 21 may be spaced apart from each other.

An upper flap 41 bent perpendicularly to the top plate 40 is attached to the upper part of the outer surface of both lateral flaps 21, 21, and an upper flap 41 bent perpendicularly to the bottom plate 10 is attached to the lower part of the outer surface of both lateral flaps 21, 21. A bent lower flap 11 is glued.

As shown in FIG. 3, the rear end wall 20 has the same configuration as the front end wall 20, and an upper flap 41 and a lower flap 11 are bonded to the left and right horizontal flaps 21, 21.

As shown in FIG. 2, a first opening hole 61 is formed in the upper part of the front end wall 20. The first opening hole 61 is a rectangular through hole into which a finger is inserted to pull up the upper flap 41 when opening the box 2 (see FIG. 5).
The first opening hole 61 of this embodiment is closed by a part of the horizontal flap 21. The first opening hole 61 can be opened by bending the portion blocking the first opening hole 61 inward (see FIG. 5).

The first opening hole 61 is formed in the end wall 20 at a position where the lower edge of the upper flap 41 overlaps. In this embodiment, the upper part of the first opening hole 61 is closed by the upper flap 41, and the lower part of the first opening hole 61 is exposed to the outside.
The left half of the first opening hole 61 is a part where the leading edge of the left horizontal flap 21 is depressed, and the right half of the first opening hole 61 is a part where the leading edge of the right horizontal flap 21 is depressed. It is a part.

A second opening hole 62 is formed in the lower part of the front end wall 20. The second opening hole 62 is a rectangular through hole into which a finger is inserted to pull out the lower flap 11 when the box 2 is discarded. Like the first opening hole 61, the second opening hole 62 is closed by a part of the horizontal flap 21.
The second opening hole 62 is formed in the end wall 20 at a position where the upper edge of the lower flap 11 overlaps. The lower part of the second opening hole 62 is closed by the lower flap 11.

In this embodiment, as shown in FIG. 1, the packaging box 1 is configured to be transported in the form of a packaging box 1 in which two boxes 2 filled with contents are arranged side by side and connected. In the packaging box 1, the side edges of the top plates 40, 40 of both the box bodies 2, 2 are connected with adhesive tape T, and the side edges of the bottom plates 10, 10 of both the box bodies 2, 2 are connected with adhesive tape T. It is connected by

Next, a procedure for opening the packaging box 1 of this embodiment will be explained.
In this embodiment, the two boxes 2, 2 shown in FIG. 1 are opened one by one.
First, as shown in FIG. 5, open the first opening hole 61 in the rear end wall 20 of the left box body 2, insert your finger into the first opening hole 61, and then open the lower edge of the upper flap 41. Put your finger on it and pull up the upper flap 41. In this way, the rear upper flap 41 is peeled off from the rear end wall 20.

Then, when the rear upper flap 41 is grasped with fingers and the top plate 40 is pulled up, the left and right cutting guide lines L1, L1 are cut open from the rear end toward the front. At this time, since the rear end of the cut of the cutting guide line L1 is inclined toward the top plate 40 side, it is possible to prevent the cut of the cutting guide line L1 from cutting into the side wall 30 side.

Furthermore, when the top plate 40 of the left box 2 is pulled up, the adhesive tape T connecting the top plates 40, 40 of both the boxes 2, 2 is pulled up together with the left top plate 40, and the It is peeled off from the top plate 40.

After cutting the entirety of both cutting guide lines L1, L1, push the left and right cover plates 61a, 61a of the front end wall 20 from outside to inside to open the first opening hole 61, pull up the upper flap 41, and open the front end wall 20. Peel off the top flap 41 from the front end wall 20.

When the top plate 40, the joining piece 50, and the front and rear upper flaps 41, 41 are separated from the box body 2 in this manner, the entire upper surface of the left side box body 2 is left open.
Subsequently, as shown in FIG. 6, the top plate 40, joint piece 50, and both upper flaps 41, 41 are separated from the box body 2 on the right side in the same way as the box body 2 on the left side. The entire upper surface of 2 is opened.
As a result, the entire top surface of the packaging box 1 is opened, and the contents can be taken out from the packaging box 1. In addition, without opening the left and right boxes 2, 2 in succession, only one box 2 may be opened and the contents may be taken out, and then the other box 2 may be opened.

Note that when discarding the packaging box 1, after separating the top plate 40 and the joint piece 50 from the left and right box bodies 2, 2, open the second opening hole 62 of the end wall 20, and insert your finger into the second opening hole 62. Insert it and pull out the lower flap 11.
Thereby, with the bottom plates 10, 10 of the left and right boxes 2, 2 joined to each other with the adhesive tape T, both the boxes 2, 2 can be opened into a flat sheet shape. Furthermore, by bending the adhesive tape T between the bottom plates 10, 10 so that the outer surfaces of the sheet-like boxes 2, 2 overlap each other, the inner surfaces of both the boxes 2, 2 are on the outside. Both boxes 2, 2 can be stacked on top of each other.
In this way, the packaging box 1 can be disposed of as a sheet together without having to disassemble both the boxes 2, 2 separately.

When opening the packaging box 1 as described above, as shown in FIG. When separated from both side walls 30, 30, the entire top surface of the box body 2 opens, making it easier to take out the contents from the packaging box 1.

Even in the case where the box body 2 is a wrap-around corrugated box and the joint piece 50 is disposed at the top as in this embodiment, when the box body 2 is opened, the joint piece 50 is attached to the side wall 30 along with the top plate 40. Since the joint piece 50 is separated from the box body 2, no joint piece 50 remains at the opening of the box body 2 after opening.

When opening the box 2, the top plate 40 is pulled up and the cutting guide line L1 at the upper edge of the side wall 30 is cut open. Therefore, even if another box 2 overlaps the outer surface of the side wall 30 of the box 2, the box 2 can be opened.

In the box body 2 of the packaging box 1 of this embodiment, as shown in FIG. 2, the cutting guide line L1 for opening is formed at the upper edge of the side wall, so that a load acts on the box body 2 from above. Sometimes, the side wall 30 is difficult to bulge outward. In this way, in the box body 2 of the packaging box 1 of this embodiment, body bulge can be suppressed.

Although the present embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and can be modified as appropriate without departing from the spirit thereof.
In the packaging box 1 of this embodiment, as shown in FIG. 2 may constitute the packaging box 1, or three or more box bodies 2 may be connected side by side.

In the packaging box 1 of this embodiment, the first opening hole 61 and the second opening hole 62 are blocked by a part of the horizontal flap 21, but when the packaging box 1 is assembled, the first opening hole 61 and the second opening hole 62 are closed. It may be configured such that the two opening holes 62 are open.

Furthermore, as shown in FIG. 2, in the box body 2 of this embodiment, the joint piece 50 that is continuous to the upper edge of the side wall 30 is joined to the lower surface of the top plate 40, but the shape of the box is not limited. It's not something you can do. For example, the upper edges of both side walls 30, 30 and the left and right edges of top plate 40 may be directly connected via cutting guide lines L1, L1, respectively.

Furthermore, in the packaging box 1 of this embodiment, the upper part of the first opening hole 61 is closed by the upper flap 41, but the lower edge of the upper flap 41 is arranged so that the upper edge of the first opening hole 61 overlaps with the lower edge of the upper flap 41. The entire first opening hole 61 may be exposed to the outside.

Further, as in the blank sheet S2 shown in FIG. 7, the upper flap 41 is connected to the top plate 40 via the cutting guide line L2, and the upper flap 41 can be separated from the top plate 40 by cutting open the cutting guide line L2. may be configured.

Further, as in the blank sheet S3 shown in FIG. 8, the lower flap 11 is connected to the bottom plate 10 via the cutting guide line L3, and the lower flap 11 can be separated from the bottom plate 10 by cutting the cutting guide line L3. may be configured.

Although the packaging box 1 of this embodiment is made of cardboard, the packaging box 1 can be made of various known paperboards.

1 Packaging box 2 Box body 10 Bottom plate 11 Lower flap 20 End wall 21 Lateral flap 30 Side wall 40 Top plate 41 Upper flap 50 Joint piece 61 First opening hole 62 Second opening hole L1 Cutting guide wire L2 Cutting guide wire L3 Cutting guide wire S1 Blank sheet S2 Blank sheet S3 Blank sheet T Adhesive tape

Claims (3)

The bottom plate and
front and rear end walls connected to the front and rear edges of the bottom plate;
left and right side walls connected to the left and right edges of the bottom plate;
a box body comprising a top plate connected to the upper edges of the both side walls;
an upper flap connected to the top plate is overlapped with the end wall;
An opening hole is formed in the end wall at a position where the lower edge of the upper flap overlaps,
The packaging box is characterized in that the upper edges of the both side walls and the left and right edges of the top plate are connected to each other via cutting guide wires. The packaging box according to claim 1,
A packaging box characterized in that a plurality of the box bodies are arranged and connected in the left-right direction. The packaging box according to claim 1,
A joint piece is connected to the upper edge of the side wall via the cutting guide wire,
The packaging box is characterized in that the joining piece is joined to the top plate.

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