JP2018111527A - Packaging box - Google Patents

Abstract

Provided is a packaging box capable of preventing the strength of a wall portion from being lowered at the time of opening and increasing the degree of freedom of design of the wall portion. A packaging box 1A includes a body 10 having front and rear end walls 11 and 12 and left and right side walls 13 and 14, and a top plate 20 closing an upper opening of the body 10. ing. The top plate 20 is connected to the upper edge portion of the front end wall 11 via the first cutting guide line L21, and the top plate 20 is connected to the upper edge portions of the left and right side walls 13 and 14 via the second cutting guide line L23. And left and right outer flaps 23, 23 provided in series. The inner flap 21 is formed with an opening start portion 25A partitioned by a third cutting guide line L22. A gap S1 is formed between the upper edge portion of the front end wall 11 and the front edge portion 23a of the outer flap 23, and the opening start portion 25A is exposed in the gap S1. [Selection] Figure 1

Description

  The present invention relates to a packaging box.

  As a packaging box made of corrugated cardboard, there is a box provided with a rectangular tube-shaped body, a bottom plate and a top plate, and perforations are formed in front, rear, left and right edges of the top plate (see, for example, Patent Document 1). . In such a packaging box, the entire upper surface of the packaging box can be opened by cutting the perforation and separating the top plate from the trunk.

Utility Model Registration No. 3176475

  In the conventional packaging box described above, since the opening start portion of the top plate is formed on the wall portion of the trunk portion, when the top plate is separated from the trunk portion, a part of the wall portion is cut off together with the top plate. Therefore, in the conventional packaging box, there are problems that the strength of the wall portion is lowered at the time of opening, and it is difficult to secure a space for forming the hand hole in the wall portion.

  It is an object of the present invention to provide a packaging box that solves the above-described problems, prevents strength from being reduced when opened, and facilitates the formation of a hand hole.

  In order to solve the above problems, the present invention is a packaging box, a cylindrical body having front and rear end walls and left and right side walls, a bottom plate closing the lower opening of the body, And a top plate that closes the upper opening of the body portion. The top plate is connected to the upper edge portion of the end wall via a first cutting guide wire, and the top plate is connected to the upper edge portions of the left and right side walls via a second cutting guide wire, Left and right outer flaps superimposed on the upper surface of the inner flap. An opening start portion defined by a third cutting guide wire is formed on the inner flap. A gap is formed between the upper edge of the end wall and the edge of the outer flap, and the opening start portion is exposed in the gap.

When opening the packaging box of the present invention, the opening start portion exposed in the gap is cut off from the inner flap, and an opening is formed in the inner flap. And by putting a hand in the opening part of an inner flap and pulling up a top plate, the whole top plate can be cut off from the upper edge part of a trunk | drum, and the whole upper surface of a packaging box can be opened.
In the packaging box of this invention, since the opening start part is formed in the inner flap of a top plate, when a top plate is cut off from a trunk | drum, a part of trunk | drum is not cut off. Therefore, in the packaging box of the present invention, it is possible to prevent the strength of the wall portion of the packaging box from being lowered at the time of opening and to easily form a handle hole in the wall portion of the packaging box.

  In the packaging box described above, it is preferable that the gap and the opening start portion are formed from the left edge to the right edge of the inner flap. In this configuration, when the opening start portion is separated from the inner flap, one side of the top plate is separated from the trunk portion, so that the top plate can be easily lifted.

  In the packaging box described above, when a recess is formed in the edge of the outer flap and the gap is formed in the recess, the gap can be reduced, so that the strength of the top plate of the packaging box before opening is increased. Can be increased.

  In the packaging box of the present invention, since the entire top surface of the packaging box can be opened without cutting off a part of the wall portion at the time of opening, the strength is prevented from lowering at the time of opening and a hand hole is easily formed. Become.

It is the perspective view which looked at the packaging box which concerns on 1st embodiment of this invention from the front upper left. It is the perspective view which looked at the packaging box which concerns on 1st embodiment of this invention from back lower right. It is the figure which showed the blank sheet of the packaging box which concerns on 1st embodiment of this invention. It is the figure which showed the procedure which opens the packaging box which concerns on 1st embodiment of this invention, (a) is a perspective view of the stage which cut | disconnected the opening start part, (b) is a perspective view of the stage which cut | disconnected the top plate. . It is the perspective view which looked at the state which opened the packaging box which concerns on 1st embodiment of this invention from the front upper left. It is the perspective view which looked at the packaging box which concerns on 2nd embodiment of this invention from the front upper left. It is the figure which showed the procedure which opens the packaging box which concerns on 2nd embodiment of this invention, (a) is a perspective view of the stage which cut off the opening start part, (b) is a perspective view of the stage which cut | disconnected the top plate. .

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the description of each embodiment, the same constituent elements are denoted by the same reference numerals, and redundant descriptions are omitted.
In the following description, the front, rear, left, and right directions are set for convenience in describing the packaging box of each embodiment, and do not limit the configuration of the packaging box.

[First embodiment]
As shown in FIG. 1 and FIG. 2, the packaging box 1 </ b> A of the first embodiment includes a barrel 10 formed in a rectangular tube shape, a bottom plate 30 that closes a lower opening of the barrel 10, and a barrel And a top plate 20 that closes the upper opening of the portion 10.

As shown in FIG. 3, the packaging box 1 </ b> A is formed by folding or blanking a blank sheet S cut out of a single cardboard sheet at each ruled line. The blank sheet S shown in FIG. 3 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 formed by pressing the surface of the blank sheet S. In addition, you may form a notch in a ruled line. If it does in this way, it will become easy to bend the blank sheet S in a ruled line.

  As shown in FIG. 1, the body portion 10 includes a pair of front and rear front walls 11 and 12, and a pair of left and right left walls 13 and 14. Each of the front end wall 11, the rear end wall 12, the left side wall 13, and the right side wall 14 is a quadrangular wall portion.

A left side wall 13 is connected to the left edge portion of the front end wall 11 via a ruled line L1.
The left side wall 13 extends rearward from the left edge of the front end wall 11. The left side wall 13 is formed perpendicular to the front end wall 11.

As shown in FIG. 2, a rear end wall 12 is connected to the rear edge of the left side wall 13 via a ruled line L2.
The rear end wall 12 extends from the rear edge of the left side wall 13 toward the right. The rear end wall 12 is formed perpendicular to the left side wall 13. The rear end wall 12 has the same shape as the front end wall 11.

A right side wall 14 is connected to the right edge portion of the front end wall 11 via a ruled line L3.
The right side wall 14 extends rearward from the right edge of the front end wall 11. The right side wall 14 is formed perpendicular to the front end wall 11. The right side wall 14 has the same shape as the left side wall 13.

  A joining piece 15 is connected to the rear edge of the right side wall 14 via a ruled line L4 (see FIG. 3). The joining piece 15 is formed in a strip shape along the rear edge of the right side wall 14. The joining piece 15 is a part joined to the right end portion of the inner surface of the rear end wall 12 by an adhesive.

  When the joining piece 15 is joined to the inner surface of the rear end wall 12 while the blank sheet S (see FIG. 3) is bent along the ruled lines L1 to L4, the front end wall 11, the left side wall 13, the rear end wall 12 and the right side wall 14 Is formed.

As shown in FIG. 1, a handle hole 16 is formed in the upper part of the front end wall 11. The handle hole 16 is an oval through hole in which left and right end portions are formed in a semicircular shape. The handle hole 16 is a part into which a hand is inserted when lifting the packaging box 1A.
In the state of the blank sheet S (see FIG. 3), the handle hole 16 is closed by the cover plate 16a. The upper edge portion of the cover plate 16a is connected to the front end wall 11 via a ruled line, and the other edge portion of the cover plate 16a is separated from the front end wall 11 by a slit.
As shown in FIG. 2, a handle hole 16 is also formed in the upper part of the rear end wall 12 in the same manner as the front end wall 11.

As shown in FIG. 1, a cutout portion 17 is formed in the left side wall 13. The cutout portion 17 is a substantially quadrangular region partitioned in the left side wall 13 by the fourth cutting guide line L11.
The fourth cutting guide line L11 is a perforated line in which cuts are formed intermittently. The interval and shape of the cut of the fourth cutting guide line L11 are not limited.

The cutout portion 17 is formed at the central portion in the left-right direction of the left side wall 13 and is formed from the upper edge portion of the left side wall 13 to the substantially central portion in the height direction of the left side wall 13.
When the fourth cutting guide line L11 is cut open and the cutout portion 17 is cut off from the left side wall 13, a recess 17a is formed at the top of the left side wall 13, as shown in FIG.
As shown in FIG. 2, the right side wall 14 is also formed with a cutout portion 17 in the same manner as the left side wall 13.

As shown in FIG. 2, the bottom plate 30 closes the lower opening of the trunk portion 10. The bottom plate 30 includes a pair of front and rear flaps 31 and 31 connected to the lower edge portions of the front end wall 11 and the rear end wall 12, and a pair of left and right flaps connected to the lower edge portions of the left side wall 13 and the right side wall 14. 32, 32.
The left and right flaps 32, 32 are overlapped on the lower surfaces of the front and rear flaps 31, 31, and the left and right flaps 32, 32 are abutted. The lower surfaces of the front and rear flaps 31 and 31 and the upper surfaces of the left and right flaps 32 and 32 are bonded by an adhesive means such as hot melt.

  As shown in FIG. 1, the top plate 20 closes the upper opening of the trunk portion 10. The top plate 20 includes a pair of front and rear inner flaps 21 and 22 and a pair of left and right outer flaps 23 and 23.

The front inner flap 21 is connected to the upper edge of the front end wall 11 via a first cutting guide line L21 (see FIG. 3).
The first cutting guide line L21 is a perforated line in which cuts are intermittently formed in the ruled line. The interval and shape of the cut of the first cutting guide line L21 are not limited.
The front inner flap 21 is formed in a quadrangular shape, and the width in the left-right direction is the same as the width in the left-right direction of the front end wall 11.
The front inner flap 21 extends backward from the upper edge of the front end wall 11. The front inner flap 21 is formed perpendicular to the front end wall 11. The length of the front inner flap 21 in the front-rear direction is formed to be about 1/3 of the length of the left and right side walls 13, 14 in the front-rear direction.

A third cutting guide line L22 is formed in parallel to the upper edge part (first cutting guide line L21) of the front end wall 11 at the base part (site on the front end wall 11 side) of the front inner flap 21. The third cutting guide line L22 is formed across the left and right edges of the front inner flap 21.
The third cutting guide line L22 is a perforated line in which cuts are formed intermittently. The interval and shape of the cut of the third cutting guide line L22 are not limited.

An unsealing start portion 25A is formed between the first cutting guide line L21 and the third cutting guide line L22 that are arranged side by side at an interval in the front-rear direction.
The opening start portion 25A is a band-shaped portion formed along the upper edge portion (first cutting guide line L21) of the front end wall 11. The opening start portion 25A is partitioned in the inner flap 21 on the front side by the third cutting guide line L22. The opening start portion 25A is formed from the left edge to the right edge of the front inner flap 21.

  As shown in FIG. 4A, when the first cutting guide line L21 and the third cutting guide line L22 are cut open and the opening start portion 25A is separated from the front inner flap 21, the front inner flap 21 is moved to the front end wall 11. Separated from the upper edge of the.

  As shown in FIG. 1, the rear inner flap 22 is connected to the upper edge of the rear end wall 12 via a first cutting guide line L <b> 21. The rear inner flap 22 has a shape symmetrical with the front inner flap 21 in the front-rear direction. The rear inner flap 22 is different from the front inner flap 21 in that the opening start portion 25A is not formed.

The left outer flap 23 is formed in a quadrangular shape and is connected to the upper edge of the left side wall 13 via a second cutting guide line L23.
The right outer flap 23 has a symmetrical shape with the left outer flap 23 and is connected to the upper edge of the right wall 14 via a second cutting guide line L23.
The second cutting guide line L23 is a perforated line in which cuts are intermittently formed in the ruled line. The interval and shape of the cut of the second cutting guide line L23 are not limited.

The front edge portions of the left and right outer flaps 23, 23 are abutted at the central portion in the left-right direction of the body portion 10.
The lower surfaces of the left and right outer flaps 23, 23 are overlapped with the upper surfaces of the front and rear inner flaps 21, 22. The lower surfaces of the left and right outer flaps 23 and 23 and the upper surfaces of the front and rear inner flaps 21 and 22 are bonded by an adhesive means such as hot melt.

The front edge portions 23 a and 23 a of the left and right outer flaps 23 and 23 are arranged behind the upper edge portion of the front end wall 11. The front edge portions 23a, 23a of the left and right outer flaps 23, 23 are arranged behind the third cutting guide line L22.
A gap S <b> 1 is formed between the upper edge portion (first cutting guide line L <b> 21) of the front end wall 11 and the front edge portions 23 a and 23 a of the left and right outer flaps 23 and 23. The gap S1 is a band-like region formed from the left edge of the front inner flap 21 to the right edge.
The lower side of the gap S1 is closed by the front inner flap 21. The opening start portion 25A and the third cutting guide line L22 of the front inner flap 21 are exposed on the upper surface side of the top plate 20 through the gap S1.

Next, the procedure for opening the packaging box 1A of the first embodiment will be described.
As shown in FIG. 4 (a), the first cutting guide line L21 and the third cutting guide line L22 are cut open from the upper side of the packaging box 1A from the left and right ends of the opening start portion 25A in the gap S1. The opening start portion 25A is cut off from the inner flap 21 on the front side.
Thereby, the front inner flap 21 is cut off from the upper edge of the front end wall 11, and an opening S <b> 2 is formed between the upper edge of the front end wall 11 and the front inner flap 21.

Subsequently, when a hand is put into the opening S2 and the front portion of the top plate 20 is pulled up, both the left and right outer flaps 23, 23 and the left and right side walls 13, 14 are connected as shown in FIG. The two cutting guide lines L23 and L23 are cut open.
In addition, after the left and right second cutting guide lines L23 and L23 are cut open, the first cutting guide line L21 between the rear inner flap 22 and the rear end wall 12 is cut open, so that the upper edge portion of the trunk portion 10 is opened. The entire top plate 20 can be cut off.
Thus, the packaging box 1A can be opened by opening the whole upper surface of the trunk | drum 10, and opening the upper side opening part of 1A of packaging boxes.

  After the packaging box 1A is opened, when the cut portions 17 and 17 are separated from the left and right side walls 13 and 14, left and right recess portions 17a and 17a are formed in the left and right side walls 13 and 14, as shown in FIG. Thereby, the contents can be shown to the outside through the left and right depressions 17a, 17a. Further, the contents can be lifted through the left and right depressions 17a, 17a.

In the packaging box 1 </ b> A as described above, as shown in FIG. 1, an opening start portion 25 </ b> A is formed on the inner flap 21 on the front side of the top plate 20. Therefore, when the top plate 20 is cut off from the body portion 10, a part of the wall portion of the packaging box 1A is not cut off, so that it is possible to prevent the strength of the wall portion of the packaging box 1A from being lowered during opening.
Moreover, it becomes easy to arrange the handle hole 16 in the wall portion of the packaging box 1A. Furthermore, a product name and a design can be displayed by effectively using the outer surface of the wall portion of the packaging box 1A.

  In the packaging box 1A of the first embodiment, as shown in FIG. 4A, when the opening start portion 25A is cut off, the entire front edge portion of the top plate 20 is cut off from the upper edge portion of the front end wall 11, so that the top plate 20 It is easy to pull up.

As mentioned above, although 1st embodiment of this invention was described, this invention is not limited to said 1st embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the packaging box 1 </ b> A of the first embodiment shown in FIG. 1, a gap and an opening start portion may be formed on the left and right halves of the top plate 20.
Moreover, in 1 A of packaging boxes of 1st embodiment, you may form a clearance gap and an opening start part in the rear part of the top plate 20. FIG. Furthermore, in the packaging box 1 </ b> A of the first embodiment, a gap and an opening start portion may be formed in both the front portion and the rear portion of the top plate 20.

  The first cutting guide line L21, the second cutting guide line L23, the third cutting guide line L22, and the fourth cutting guide line L11 of the present embodiment are perforated lines in which cuts are intermittently formed. The cutting guide line may be constituted by a half cut line.

  Although the packaging box 1A of the first embodiment is made of cardboard, the packaging box may be formed of various known paperboards.

[Second Embodiment]
Next, the packaging box 1B of 2nd embodiment is demonstrated.
As shown in FIG. 6, the packaging box 1 </ b> B of the second embodiment has substantially the same configuration as the packaging box 1 </ b> A (see FIG. 1) of the first embodiment, and the configuration of the gap S <b> 3 of the top plate 20 and the opening start portion 25 </ b> B. Is different.

In the packaging box 1 </ b> B of the second embodiment, an opening start portion 25 </ b> B is formed at the center in the left-right direction of the front inner flap 21.
The unsealing start portion 25B of the second embodiment is partitioned by a third cutting guide line L24, and is a quadrangular region surrounded by the third cutting guide line L24 and the first cutting guide line L21.

In the packaging box 1B of the second embodiment, a recess 26 is formed at the abutting portion of the front edge portions 23a, 23a of the left and right outer flaps 23, 23. The concave portion 26 is a portion where the front edge portions 23a, 23a of the left and right outer flaps 23, 23 are recessed rearward. The left half of the recess 26 is formed on the left outer flap 23, and the right half of the recess 26 is formed on the right outer flap 23.
In the packaging box 1B of the second embodiment, the opening start portion 25B is exposed on the upper surface side of the top plate 20 through the gap S3.

  When opening the packaging box 1B of the second embodiment, first, as shown in FIG. 7A, when the opening start portion 25B is pushed downward from above the packaging box 1B through the gap S3, the third cutting guide wire L24 is cut open, and the opening start portion 25B is separated from the inner flap 21 on the front side. As a result, an opening is formed in the inner flap 21 on the front side.

Subsequently, the top plate 20 is separated from the body portion 10 by putting a hand into the opening of the inner flap 21 on the front side and pulling up the front portion of the top plate 20. Further, as shown in FIG. 7B, the opening start portion 25B is separated from the upper edge portion of the front end wall 11.
Thus, the packaging box 1B can be opened by opening the whole upper surface of the trunk | drum 10. FIG.

  In the packaging box 1B of the second embodiment as described above, as shown in FIG. 6, the gap S3 of the top plate 20 can be reduced, so that the strength of the top plate 20 before opening can be increased.

As mentioned above, although 2nd embodiment of this invention was described, this invention is not limited to said 2nd embodiment, Like said 1st embodiment, it can change suitably in the range which does not deviate from the meaning. Is possible.
In the packaging box 1B of the second embodiment shown in FIG. 6, the shapes of the recess 26 and the opening start portion 25B are not limited. For example, you may form a recessed part and an opening start part in the right-and-left half of the top board 20. FIG.

  Further, the opening start portion 25B may be formed behind the upper edge portion of the front end wall 11. For example, you may comprise so that the opening start part 25B may be arrange | positioned in the center part of the clearance gap S3.

1A Packaging box (first embodiment)
1B Packaging box (second embodiment)
DESCRIPTION OF SYMBOLS 10 trunk | drum 11 front end wall 12 rear end wall 13 left side wall 14 right side wall 15 joining piece 16 handle hole 16a cover plate 17 cutout part 17a hollow part 18 recessed part 20 top plate 21 front inner flap 22 rear inner flap 23 outer flap 23a Front edge portion 25A Opening start portion (first embodiment)
25B opening start part (2nd embodiment)
26 Concave portion 30 Bottom plate L21 First cutting guide wire L22 Third cutting guide wire (first embodiment)
L23 Second cutting guide wire L24 Third cutting guide wire (second embodiment)
S blank sheet S1 gap (first embodiment)
S2 opening (first embodiment)
S3 gap (second embodiment)

Claims (3)

A cylindrical body having front and rear end walls and left and right side walls;
A bottom plate closing the lower opening of the trunk;
A top plate closing the upper opening of the body,
The top plate is
An inner flap connected to the upper edge of the end wall via a first cutting guide wire;
Left and right outer flaps that are connected to the upper edge portions of the left and right side walls via a second cutting guide wire, and are overlapped on the upper surface of the inner flap,
The inner flap is formed with an opening start portion defined by a third cutting guide line,
A gap is formed between the upper edge of the end wall and the edge of the outer flap,
The packaging box, wherein the opening start portion is exposed in the gap. The packaging box according to claim 1,
The said clearance gap and the said opening start part are formed from the left edge part of the said inner flap to the right edge part, The packaging box characterized by the above-mentioned. The packaging box according to claim 1,
A recess is formed at the edge of the outer flap,
A packaging box, wherein the gap is formed in the recess.

Images