JP2022047031A - Packing box - Google Patents

Abstract

To provide a packing box which allows one surface of a trunk part to be easily opened.SOLUTION: A packing box 1 comprises a trunk part 10 having front and rear end walls 11 and 12 and left and right side walls 13 and 14, and upper and lower lid plates 20 and 30. The lid plate 20 is formed of front and rear inner flaps 21 and 21 and left and right outer flaps 22 and 22. In the side walls 13 and 14, a wall body 51 and an opening flap 52 formed at an end of the front end wall 11 side are partitioned. At the boundary between the wall body 51 and the opening flap 52, there are formed an opening start hole 55 and two side cutting guide lines L11 and L12 extending from the opening start hole 55 toward both ends of the side edge of the front end wall 11.SELECTED DRAWING: Figure 1

Description

The present invention relates to a packaging box.

The corrugated cardboard packaging box includes a tubular body having front and rear end walls and left and right side walls, and upper and lower lid plates provided at the upper and lower openings of the body, and the lid plates are provided at both ends. Some of the inner flaps connected to the wall are formed by stacking the outer flaps connected to both side walls.
Some of the above-mentioned packaging boxes have cutting guide lines formed on the left and right edges of the end wall and a zipper extending in the left-right direction at the center of the end wall (for example, Patent Document 1). reference).

Japanese Unexamined Patent Publication No. 9-048428

When opening the conventional packaging box described above, the zipper of the end wall is cut off to divide the end wall, and then the end wall is opened outward and the left and right cutting guide lines are cut open to separate the end wall and the inner flap into the body. It is separated from the body to open one side of the body. As described above, the conventional packaging box described above has a problem that the opening operation becomes complicated.

An object of the present invention is to solve the above-mentioned problems and to provide a packaging box capable of easily opening one surface of a body portion.

In order to solve the above problems, the present invention is a packaging box, which is a tubular body having front and rear end walls and left and right side walls, and upper and lower lid plates provided in upper and lower openings of the body. And have. The lid plate is formed by front and rear inner flaps connected to both end walls and left and right outer flaps connected to both side walls and superposed on the outer surfaces of both inner flaps. The side wall is partitioned from a wall body and an opening flap formed at one end of the end wall side. At the boundary between the wall body and the opening flap, an opening start hole and two side cutting guides extending from the opening start hole toward both ends of the side edge portion of one of the end walls, respectively. Lines and are formed.

When opening the packaging box of the present invention, the operator can easily cut open the side cutting guide wire by inserting a hand into the opening opening hole of the side wall and pulling the opening flap of the side wall outward. Then, when the opening flap is opened outward, a large opening is formed in the side wall. The operator then inserts his hand into the opening formed in the side wall, securely grips the side edge of one end wall, and pulls one end wall outwards to facilitate one side of the body. It can be opened.

In the above-mentioned packaging box, when the end portion of the side cutting guide wire is separated from the side edge portion of one of the end walls, the end portion of the side cutting guide wire is on the side of one end wall. It is possible to suppress a decrease in the strength of the side wall as compared with the case where it is connected to the edge portion.

In the above-mentioned packaging box, the opening separation portion is partitioned by a cutting guide wire at the vertical end portion of one of the end walls, and the end portion of the adhesive tape attached to the abutting portion of both outer flaps is placed in the opening separation portion. It is preferable to paste it.

In this configuration, when opening one end wall, if the opening separation portion is pushed inward, the opening separation portion is separated from the one end wall. In this way, the end of the adhesive tape can be easily separated from one end wall.

When the content to be accommodated in the packaging box is, for example, a member having a circular cross section and the width in the left-right direction is large in the vertical center portion of the side wall, the opening start hole is centered in the vertical direction of the side wall. It is preferable to form it on the upper side or the lower side of the portion. In this way, it becomes difficult for the hand inserted into the opening start portion to hit the contents.

In the packaging box of the present invention, the operator opens the opening flap of the side wall to the outside to firmly grasp the side edge of the end wall, and pulls the end wall to the outside to open one side of the body. It can be easily opened.

It is a perspective view which looked at the packaging box which concerns on embodiment of this invention from the front upper right. It is a figure which showed the blank sheet of the packaging box which concerns on embodiment of this invention. It is a perspective view which showed the state before closing the upper lid plate in the packaging box which concerns on embodiment of this invention. It is a perspective view which showed the state which opened the opening flap in the packaging box which concerns on embodiment of this invention. It is a perspective view which showed the state which the end wall was opened in 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-back and left-right directions are set for convenience in explaining the packaging box of the present embodiment, and do not limit the configuration and usage state of the packaging box.

As shown in FIG. 1, the packaging box 1 of the present embodiment includes a tubular body portion 10 and upper and lower lid plates 20 and 30 provided in upper and lower openings of the body portion 10. It is a cardboard box of the type.
In the present embodiment, as shown in FIG. 3, a packaging box 1 for accommodating the contents A in which a sheet is wound in a cylindrical shape is shown as an example. In this embodiment, in order to make the configuration of the packaging box 1 easy to understand, the contents A are not shown in the drawings other than FIG.

As shown in FIG. 2, the packaging box 1 of the present embodiment is formed by folding a blank sheet S obtained by cutting out a corrugated cardboard sheet into mountain folds or valley folds at each polygonal line. The blank sheet S shown in FIG. 2 is arranged so that the inner surface side can be seen.
The polygonal line of the blank sheet S is a ruled line (pressed ruled line) formed by linearly pressing the surface of the blank sheet S. In addition, an intermittent notch may be formed in the ruled line. By doing so, it becomes easy to bend the blank sheet S at the polygonal line.
Further, a polygonal line may be formed by intermittently forming a half-cut notch that cuts only the surface of the sheet or a notch that penetrates the sheet to form a linear shape.

Each cutting guide line formed on the blank sheet S is a perforated line in which a notch is intermittently formed. The shape and length of the notch are not limited. Further, in each drawing showing the packaging box 1 assembled from the blank sheet S, the shape of the notch of each cutting guide wire is shown in a simplified manner in order to clearly show the structure of the packaging box 1.

As shown in FIG. 1, the body portion 10 has a pair of front and rear end walls 11 and 12 and a pair of left and right side walls 13 and 13. Both end walls 11 and 12 and both end walls 13 and 13 are formed in a quadrangular shape in a side view (see FIG. 2).
A right side wall 13 is connected to the right edge of the front end wall 11 via a polygonal line, and a rear end wall 12 is connected to the rear edge of the right side wall 13 via a polygonal line. ing. Further, a left side wall 13 is continuously provided on the left edge of the front end wall 11 via a broken line, and a band-shaped joint piece 15 is continuously provided on the trailing edge of the left side wall 13 via a broken line. Has been done. The joining piece 15 is joined to the inner surface of the rear end wall 12.

When the blank sheet S (see FIG. 2) is bent at each ruled line and the joining piece 15 is joined to the inner surface of the rear end wall 12, the both end walls 11 and 12 and both side walls 13 and 13 form a rectangular cylinder in a plan view. A shaped body 10 is formed.

The upper lid plate 20 closes the upper opening of the body portion 10. The upper lid plate 20 is connected to a pair of front and rear inner flaps 21 and 21 connected to the upper edges of the front and rear end walls 11 and 12, respectively, and to the upper edges of the left and right side walls 13 and 13, respectively. It is provided with a pair of left and right outer flaps 22, 22. The upper lid plate 20 is formed by superimposing the outer flaps 22 and 22 on the outer surfaces (upper surfaces) of the inner flaps 21 and 21 and abutting the outer flaps 22 and 22 against each other.

Further, the first adhesive tape T1 extended in the front-rear direction is attached to the outer surface of the abutting portion of the outer flaps 22 and 22. The front and rear ends of the first adhesive tape T1 are attached to the upper ends of the front and rear end walls 11 and 12, respectively. In this way, both outer flaps 22 and 22 are fixed in a closed state.

The lower lid plate 30 closes the lower opening of the body portion 10. The lower lid plate 30 is connected to a pair of front and rear inner flaps 31 and 31 connected to the lower edges of the front and rear end walls 11 and 12, respectively, and to the lower edges of the left and right side walls 13 and 13, respectively. It is provided with a pair of left and right outer flaps 32, 32. The lower lid plate 30 is formed by superimposing the outer flaps 32 and 32 on the outer surfaces (lower surfaces) of the inner flaps 31 and 31 and abutting the outer flaps 32 and 32 against each other.

Further, the second adhesive tape T2 is attached to the abutting portion of the outer flaps 32 and 32 of the lower lid plate 30 in the same manner as the upper lid plate 20, and the second adhesive tape T2 is attached to the front and rear of the second adhesive tape T2. The end portions are attached to the lower end portions of the front and rear end walls 11 and 12, respectively.

The right side wall 13 is divided into a wall main body 51 and an opening flap 52 formed at an end portion (front end portion) on the front end wall 11 side.
At the boundary between the wall body 51 and the opening flap 52, an opening start hole 55, an upper side cutting guide line L11, and a lower side cutting guide line L12 are formed. That is, the wall body 51 is formed on the rear side of the opening start hole 55 and the cutting guide wires L11 and L12 on both sides, and the opening flap 52 is formed on the front side.

The opening start hole 55 is a substantially rectangular through hole extending in the vertical direction. In the present embodiment, the opening start hole 55 is formed above the central portion in the vertical direction of the side wall 13.

The upper side cutting guide line L11 extends linearly from the upper edge of the opening start hole 55 toward the upper end of the right edge of the front end wall 11. The upper side cutting guide line L11 is inclined away from the upper edge of the side wall 13 from the front side to the rear side.

The front end of the upper side cutting guide line L11 is separated from the upper end of the right edge of the front end wall 11. A side polygonal line L15 is formed on an extension of the side cutting guide line L11 between the front end of the upper side cutting guide line L11 and the upper end of the right edge of the front end wall 11. ..

The lower side cutting guide line L12 extends linearly from the front end of the lower edge of the opening start hole 23 toward the lower end of the right edge of the front end wall 11. The lower side cutting guide line L12 is inclined away from the lower edge of the side wall 13 from the front side to the rear side.

The front end of the lower side cutting guide line L12 is separated from the lower end of the right edge of the front end wall 11. Further, a side polygonal line L15 is formed on an extension of the side cutting guide line L11 between the front end of the lower side cutting guide line L12 and the upper end of the right edge of the front end wall 11. Has been done.

The side polygonal line L15 is formed on the inner surface of the side wall 13, but in order to make it easier to understand the arrangement of the side polygonal line L15, the side polygonal line L15 is shown by a solid line on the outer surface of the side wall 13 in each drawing. There is.

The opening flap 52 closes the region between the leading edge portion of the side wall 13 and the cutting guide wires L11 and L12 on both sides, and the region inside the opening opening hole 55. The opening flap 52 is formed so that the width in the vertical direction becomes narrower from the front end portion to the rear end portion. The opening flap 52 is connected to the right edge of the front end wall 11 via a polygonal line.

Similar to the right side wall 13, the wall body 51 and the opening flap 52 are formed on the left side wall 13, and the opening start hole 55 and the upper and lower side portions are formed at the boundary between the wall body 51 and the opening flap 52. The cutting guide lines L11 and L12 are formed.

As shown in FIG. 3, a handle hole 23 is formed in the upper inner flap 21 connected to the upper edge portion of the front end wall 11. Further, a handle hole 23 is also formed in the upper inner flap 21 connected to the upper edge portion of the rear end wall 11.
The handle hole 23 is formed at the center of the inner flap 21 in the left-right direction. The handle hole 23 is a portion where the operator puts his / her hand when transporting the packaging box 1 with the inner flaps 21 and 21 open.

An opening separation portion 60 is formed on the upper portion of the front end wall 11. As shown in FIG. 3, the opening separation portion 60 extends in a band shape from the upper end portion of the front end wall 11 to the handle hole 23 of the upper inner flap 21.
The opening separation portion 60 is partitioned by a cutting guide wire L21 in the front end wall 11 and in the upper inner flap 21.
The opening separation portion 60 is formed at the center portion in the left-right direction of the end wall 11 and the inner flap 21. Then, as shown in FIG. 1, the front end portion of the first adhesive tape T1 is attached to the inside of the opening separation portion 60.

As shown in FIG. 3, the packaging box 1 of the present embodiment contains the contents A in which a sheet is wound into a cylindrical shape. The contents A are housed in the packaging box 1 with the axial direction oriented in the front-rear direction.
The content A of the present embodiment has a circular shaft cross section, and its diameter is slightly smaller than the width in the left-right direction and the up-down direction of the packaging box 1. When the content A is housed in the packaging box 1, the width of the content A in the left-right direction becomes maximum at the central portion in the vertical direction of the side wall 13. That is, the outer peripheral surface of the content A is close to the inner surface of the central portion in the vertical direction of the side wall 13.

As shown in FIG. 1, when the upper and lower lid plates 20 and 30 of the packaging box 1 are closed and the packaging box 1 is opened, the front end wall 11 is on the upper side as shown in FIG. Place the packaging box 1.
When the operator pushes the opening separation portion 60 inward, the cutting guide line L21 is cut, and the opening separation portion 60 is separated from the front end wall 11 and the inner flap 21. In this way, the front end portion of the first adhesive tape T1 can be easily separated from the front end wall 11.

Further, the operator pushes the tips of the opening flaps 52 and 52 of the left and right side walls 13 and 13 inward, respectively, to open the left and right opening start holes 55 and 55. Then, the operator inserts his / her hand into both opening start holes 55 and 55, respectively, and grips the tips of the left and right opening flaps 52 and 52.

At this time, the opening start hole 55 is formed above the central portion in the vertical direction of the side wall 13, and the outer surface of the content A (see FIG. 3) is not close to the inside of the opening start hole 55. It is difficult for the hand inserted into the opening start hole 55 to hit the contents A.
Then, the operator can easily cut open the upper and lower side cutting guide lines L11 and L12 by pulling out the opening flap 52 to the outside.

When the opening flap 52 is opened outward in this way, an opening 56 is formed at the front end portion of the side wall 13.
The operator folds the left and right opening flaps 52, 52 toward the outer surface side of the front end wall 11, and inserts his / her hand into the left and right openings 56, 56. This allows the operator to reliably grip the left and right edges of the front end wall 11.

Then, as shown in FIG. 5, the operator grips the left and right edges of the front end wall 11 and pulls up the front end wall 11. As a result, the front end wall 11 and the upper inner flap 21 are separated from the body portion 10, and one surface of the body portion 10 is opened.
In the present embodiment, since the end portion of the second adhesive tape T2 is attached to the front end wall 11, the front end wall 11 and the upper inner flap 21 are the outer surface of the lower lid plate 30. Fold back to the side.
Further, the end portion of the first adhesive tape T1 is attached to the opening separation portion 60, and when the packaging box 1 is opened, the opening separation portion 60 is in a state of being connected to the body portion 10, so that dust is collected. It can be prevented from occurring.

In the packaging box 1 as described above, as shown in FIG. 4, the operator can reliably grip the side edge portion of the front end wall 11 after opening the opening flap 52 of the side wall 13 to the outside. .. Then, as shown in FIG. 5, the packaging box 1 can be easily opened by pulling the front end wall 11 outward to open one side of the body portion 10.

In the packaging box 1 of the present embodiment, as shown in FIG. 1, the ends of the upper and lower side cutting guide lines L11 and L12 of the side wall 13 are separated from the side edges of the front end wall 11. In this configuration, it is possible to suppress a decrease in the strength of the side wall 13 as compared with the case where the ends of the side cutting guide wires L11 and L12 are connected to the side edge of the front end wall 11.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the spirit of the present invention.
In the present embodiment, as shown in FIG. 1, the front end wall 11 is configured to open, but the rear end wall 12 may also be opened. In this case, the opening flaps 52 are also formed at the rear ends of the left and right side walls 13 and 13.

In the packaging box 1 of the present embodiment, the opening start hole 55 is formed above the central portion in the vertical direction of the side wall 13 so that the operator's hand can be easily inserted into the opening start hole 55. Depending on the shape of the contents, the opening start hole 55 may be formed in the central portion or the lower side in the vertical direction of the side wall 13.

The packaging box 1 of the present embodiment is a type A corrugated cardboard box, but the shape of the body and the lid plate of the packaging box 1 is not limited.

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

1 Packaging box 10 Body 11 Front end wall 12 Rear end wall 13 Left side wall 14 Right side wall 15 Joint piece 20 Upper lid plate 21 Inner flap 22 Outer flap 23 Opening start hole 30 Lower lid plate 31 Inner flap 32 Outer flap 51 Wall body 52 Opening flap 55 Opening start hole 56 Opening 60 Opening separation part L11 Upper side cutting guide line L12 Lower side cutting guide line L15 Side bending line L21 Cutting guide line S blank Sheet T1 1st adhesive tape T2 2nd adhesive tape A Contents

Claims (4)

A cylindrical body with front and rear end walls and left and right side walls,
The upper and lower lid plates provided in the upper and lower openings of the body portion are provided.
The lid plate is
The front and rear inner flaps connected to both end walls and
It is formed by left and right outer flaps that are connected to both side walls and overlapped with the outer surfaces of both inner flaps.
On the side wall
With the wall body
One of the opening flaps formed at the end on the end wall side is partitioned.
At the boundary between the wall body and the opening flap,
Opening start hole and
A packaging box characterized in that two side cutting guide lines extending from the opening start hole toward both ends of a side edge portion of one of the end walls are formed. The packaging box according to claim 1.
A packaging box characterized in that the end portion of the side cutting guide wire is separated from the side edge portion of one of the end walls. The packaging box according to claim 1 or 2.
A packaging box characterized in that an opening separation portion is partitioned by a cutting guide wire at a vertical end portion of the one end wall. The packaging box according to any one of claims 1 to 3.
The packaging box, wherein the opening start hole is formed above or below the central portion in the vertical direction of the side wall.

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