JP2023056702A - Packing box - Google Patents

Abstract

The present invention provides a packaging box capable of forming an opening that enhances the visibility of the contents while preventing a decrease in strength and preventing the contents from spilling out during display. A cylindrical body 10, a top plate 20 closing an upper opening of the body 10, and a bottom plate 30 closing a lower opening of the body 10. Two extending first cutting guide lines L11, L11 are formed on at least one side surface of the body 10, continuing from the first cutting guide lines L11, L11 and extending from the top plate 20 to the bottom plate 30. Two second cutting guide lines L12, L12 are formed, and the second cutting guide lines L12, L12 are formed so as to approach each other toward the bottom plate. [Selection drawing] Fig. 1

Description

The present invention relates to packaging boxes.

A corrugated cardboard packaging box includes a cylindrical body, a top plate and a bottom plate, and by cutting a cutout from the top plate to the body, a part of the packaging box is opened and the contents can be released as it is. There are known products that can be displayed (see Patent Document 1, for example).

JP 2018-203326 A

In the packaging box of Patent Document 1, the width of the opening is widened in order to improve the visibility of the contents. By leaving the lower part like a strip, the contents are prevented from spilling. However, packaging boxes with cutting guide lines across the body tend to buckle due to the cutting guide lines crossing the body, resulting in a decrease in strength. There is a risk that the packaging box will be deformed by the additional load.

The present invention solves the above-described problems, and provides a packaging box capable of forming an opening that enhances the visibility of the contents while preventing a decrease in strength and preventing the contents from spilling out during display. The task is to provide

In order to solve the above problems, the present invention provides a packaging box comprising a cylindrical body, a top plate that closes an opening on the upper side of the body, and a bottom plate that closes the opening on the lower side of the body. Two first cutting guide lines extending in the front-rear direction are formed on the top plate, and at least one side surface of the body is continuous with the first cutting guide line and the top plate two second cutting guide lines extending from the bottom plate to the bottom plate, and the second cutting guide lines are formed so as to approach each other toward the bottom plate.

When opening the packaging box of the present invention, the first cutting guide lines can be easily cut open by grasping the part sandwiched between the two first cutting guide lines and pulling the part to the outside. Then, when the portion sandwiched between the two second cutting guide lines is further opened outward, the side surface of the trunk portion is torn toward the bottom plate. As described above, according to the packaging box of the present invention, since the opening is formed to enhance the visibility of the contents, the contents can be displayed as they are without being taken out of the packaging box.
In addition, since the second cutting guide line approaches toward the lower end and becomes narrower than the width of the content, it is possible to prevent the content from falling. Furthermore, since the cutting guide line that traverses the side surface of the body can be eliminated, it is possible to prevent a decrease in strength.

In the packaging box described above, it is preferable that the second cutting guide line is a curved line.

With this configuration, the part sandwiched between the two second cutting guide lines can be easily pulled outward, so that the opening can be formed more easily in the side surface of the trunk.

In the packaging box described above, it is preferable that an opening start portion is formed at an upper edge portion of a side surface facing the side surface on which the second cutting guide line is formed.

With this configuration, by inserting a hand into the unsealing start portion of the rear end wall, the operator can easily grasp the portion surrounded by the two first cutting guide lines and easily open the lid.

To provide a packaging box capable of forming an opening for enhancing the visibility of the contents while preventing a decrease in strength and preventing the contents from spilling when displayed. can be done.

It is the perspective view which looked at the packaging box which concerns on embodiment of this invention from the front upper right. It is the figure which showed the blank sheet of the packaging box which concerns on embodiment of this invention. Fig. 2 is a perspective view showing a state in which the opening portion of the top plate is opened in the packaging box according to the embodiment of the present invention; Fig. 2 is a perspective view showing a state in which the side of the body is opened in the packaging box according to the embodiment of the present invention; It is the figure which showed the modification of the blank sheet of the packaging box which concerns on embodiment of this 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 describing the packaging box of the present embodiment, and do not limit the configuration or usage of the packaging box.

As shown in FIG. 1, the packaging box 1 of this embodiment includes a cylindrical body 10, a top plate 20 connected to the upper and a bottom plate 30 connected to the lower edge of the portion 10 . The packaging box 1 of this embodiment is a wrap-around cardboard box.

As shown in FIG. 2, the packaging box 1 is formed by mountain-folding or valley-folding a blank sheet S obtained by cutting out a corrugated cardboard sheet. The blank sheet S shown in FIG. 2 is arranged so that the outer surface side can be seen.
Each ruled line (folded line) of the blank sheet S is a linear groove (press ruled line) formed by pressing the surface of the blank sheet S. As shown in FIG.
In addition, you may form an intermittent notch in a ruled line. By doing so, it becomes easier to fold the blank sheet S at the ruled line.

Each cutting guide line formed in the blank sheet S is a line of perforations in which a plurality of notches are intermittently formed. Note that the shape and length of the cut are not limited. Further, in each drawing showing the packaging box 1 assembled from the blank sheets S, the shape of the notch of each cutting guide line is simplified in order to illustrate the structure of the packaging box 1 in an easy-to-understand manner.

The body 10 has front and rear end walls 11, 11 and left and right side walls 12, 12, as shown in FIG. The front and rear end walls 11, 11 and the left and right side walls 12, 12 are respectively rectangular flat plates.
A top plate 20 is connected to the upper edge of the end wall 11 via a ruled line. A bottom plate 30 is connected to the lower edge of the front end wall 11 via a ruled line. A rear end wall 11 is connected to the rear edge of the bottom plate 30 via a ruled line. A band-shaped joining piece 50 is continuously provided at the front edge of the top plate 20 .

As shown in FIG. 1, the front end wall 11 is formed with left and right second cutting guide lines L12, L12 and an end wall unsealing portion 42, which will be described later.
As shown in FIG. 2, an opening start portion 41a is formed at the upper edge of the rear end wall 11. As shown in FIG.
A fourth cutting guide line L14 is formed along the ruled line (ridge line) between the rear end wall 11 and the top plate 20, and the ruled line (ridge line) between the front end wall 11 and the bottom plate 30 is formed. ), a fifth cutting guide line L15 is formed. The opening start portion 41a is formed at a position adjacent to the fourth cutting guide line L14.

The right sidewall 12, as shown in FIGS. An upper flap 21 connected to the edge and a lower flap 31 connected to the right edge of the bottom plate 30 are provided.
The tip edges of the front and rear lateral flaps 12a, 12b are butted against each other. An upper flap 21 and a lower flap 31 are attached to the outer surfaces of the front and rear lateral flaps 12a, 12b.

The left side wall 12 has the same configuration as the right side wall 12, as shown in FIG. , 12b, an upper flap 21 and a lower flap 31 are attached.

The top plate 20 closes the upper opening of the body 10, as shown in FIG. As shown in FIG. 1, the top plate 20 is formed with left and right first cutting guide lines L11, L11 and a top plate opening portion 41. As shown in FIG.
The left and right first cutting guide lines L<b>11 , L<b>11 are formed over the front and rear edges of the top plate 20 . The rear ends of the first cutting guide lines L11, L11 are connected to the fourth cutting guide line L14. That is, the fourth cutting guide line L14 is formed so as to connect the rear ends of the first cutting guide lines L11, L11. The first cutting guide line L11 and the fourth cutting guide line L14 are lines of perforations formed by intermittently forming a plurality of cuts, and each cut penetrates the top plate 20 .
The top plate opening portion 41 is a region surrounded by the left and right first cutting guide lines L11, L11, the fourth cutting guide line L14, and the front edge of the top plate 20, and has a quadrangular shape.

The left and right second cutting guide lines L12, L12 are continuous from both ends of the first cutting guide lines L11, L11, and are formed over the upper and lower edges of the front end wall 11 . That is, the second cutting guide lines L12, L12 extend from the top plate 20 to the bottom plate 30. As shown in FIG.

The second cutting guide line L12 on the right side is formed in a curvilinear shape that swells in a direction away from the upper left corner of the front end wall 11 .
The second cutting guide line L12 on the left side is formed in a curvilinear shape that swells in a direction away from the upper right corner of the front end wall 11 .
The second cutting guide lines L12, L12 are lines of perforations formed by intermittently forming a plurality of notches, and each notch penetrates the front end wall 11. As shown in FIG.

The left and right second cutting guide lines L12, L12 are formed so as to approach each other toward the lower edge. That is, the length of the lower end between the second cutting guide lines L12, L12 is formed shorter than the length of the upper end.
More specifically, the separation distance between the lower ends of the second cutting guide lines L12, L12 should be half or less, preferably 1/3 or less, more preferably 1/4 or less of the separation distance between the upper ends. .
The lower ends of the second cutting guide lines L12, L12 are connected to the fifth cutting guide line L15. That is, the fifth cutting guide line L15 is formed so as to connect the lower ends of the second cutting guide lines L12, L12.

The end wall opening portion 42 is an area surrounded by the left and right second cutting guide lines L12, L12, the upper edge of the front end wall 11, and the fifth cutting guide line L15, and approaches the lower edge. It exhibits a tapered shape (substantially inverted trapezoidal shape) in which the width in the left-right direction becomes narrower as it goes.

The bottom plate 30 closes the lower opening of the body 10, as shown in FIG. The bottom plate 30 is the same rectangular flat plate as the top plate 20 .

Third cutting guide lines L13, L13 are formed on the joining piece 50 at positions corresponding to the second cutting guide lines L12, L12. That is, the third cutting guide lines L13, L13 are arranged so as to overlap the second cutting guide lines L12, L12 with the joint piece 50 attached to the front end wall 11 surface. When the second cutting guide lines L12, L12 are formed on the rear end wall 11, the third cutting guide lines L13, L13 may be omitted.

When opening the packaging box 1 of the present embodiment, first, the opening start portion 41 a of the rear end wall 11 is pushed inside the packaging box 1 . Next, as shown in FIG. 3, an operator's finger is inserted into the opening starting portion 41a of the rear end wall 11, and the top plate opening portion 41 is grasped and pulled up. As a result, the fourth cutting guide line L14 is broken, the first cutting guide lines L11, L11 are broken toward the front end wall 11 side, and the top plate unsealing portion 41 is cut off.

Next, when the separated top plate unsealing portion 41 is further pulled forward, the second cutting guide lines L12, L12 are broken from the top plate 20 toward the bottom plate 30. As shown in FIG. After that, when the fifth cutting guide line L15 is broken, the end wall unsealing portion 42 is cut off. As a result, as shown in FIG. 4, an opening 60 is formed from the top plate 20 to the lower edge of the front end wall 11 .

When the opening 60 is formed in the packaging box 1, the front and top surfaces of the contents A can be visually recognized.

In the packaging box 1 as described above, the top plate unsealing portion 41 is pulled outward to partially open the top plate 20, and the end wall unsealing portion 42 is pulled outward continuously to the top plate unsealing portion 41. An opening 60 may be formed in 10 . As a result, the opening 60 that enhances the visibility of the contents A is formed, so that the contents A can be displayed as they are without being taken out of the packaging box 1 .
In addition, since the second cutting guide line L12 approaches toward the lower end and becomes narrower than the width of the content A, the lower portion of the content A is pressed, and the content A can be prevented from spilling. Furthermore, since the cutting guide line that crosses the side surface of the trunk portion 10 can be eliminated, it is possible to prevent a decrease in strength.

In the packaging box 1 of the present embodiment, as shown in FIG. 1, the second cutting guide lines L12, L12 are curved lines, so that the end wall unsealing portion 42 surrounded by the second cutting guide lines L12, L12 can be easily opened. can be opened.

In the packaging box 1 of this embodiment, as shown in FIG. A hand can be inserted into the starting portion 41a.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be appropriately modified without departing from the scope of the invention.
For example, as shown in FIG. 5 , first cutting guide lines L11, L11 may be formed on the rear end wall 11 . In this case, the unsealing start portion 41a may be formed on the joining piece 50 to open the rear end wall 11 .

The packaging box 1 of the present embodiment is a wrap-around cardboard box, but the shape of the body and cover plate of the packaging box 1 is not limited, and may be, for example, an A-type cardboard box. .

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

1 packaging box 10 body 11 end wall 12 side wall 12a lateral flap 12b lateral flap 21 top flap 31 bottom flap 20 top plate 30 bottom plate 41 top plate opening portion 42 end wall opening portion 50 joining piece 60 opening L11 first cutting guide line L12 second Second cutting guide wire L13 Third cutting guide wire L14 Fourth cutting guide wire L15 Fifth cutting guide wire A Contents

Claims (3)

a cylindrical torso;
A top plate that closes an opening on the upper side of the trunk and a bottom plate that closes the opening on the lower side of the trunk,
The top plate is formed with two first cutting guide lines extending in the front-rear direction,
Two second cutting guide lines extending from the top plate to the bottom plate are formed on at least one side surface of the body, continuing from the first cutting guide line, and
The packaging box, wherein the second cutting guide lines are formed so as to approach each other toward the bottom plate. The packaging box according to claim 1,
The packaging box, wherein the second cutting guide line is a curved line. The packaging box according to claim 1 or claim 2,
A packaging box, wherein an opening start portion is formed at an upper edge portion of a side surface opposite to the side surface on which the second cutting guide line is formed.

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