JP2023032591A - packaging box - Google Patents

Abstract

To provide a packaging box in which one side of a body part can be easily opened.SOLUTION: There is provided a packaging box 1 including: a body 10 having front and rear end walls 11, 12 and left and right side walls 13, 14, and upper and lower lid plates 20, 30. The lid plate 20 is formed by front and rear inner flaps 21 and 21 and left and right outer flaps 22 and 22. An unsealing start portion 55 adjacent to an upper edge portion of the end wall 11 and two central cutting guide lines L11 and L12 extending from the unsealing start portion 55 toward left and right side portions of the end wall 11 are formed on at least one end wall 11.SELECTED DRAWING: Figure 1

Description

The present invention relates to packaging boxes.

A corrugated cardboard packaging box includes a cylindrical body having front and rear end walls and left and right side walls, and upper and lower cover plates provided at upper and lower openings of the body. Some are formed by stacking outer flaps connected to both side walls on inner flaps connected to walls.
In such a packaging box, two cutting guide lines are formed from the boundary between the upper end of the side surface and the flap, and are broken toward the lower end to form an opening in the end wall. 1).

JP 2020-100425 A

In the packaging box of Patent Document 1, after opening the upper inner flap to open the upper part, the opening flap is separated from the body by cutting open the cutting guide line, and part of the end wall is opened. there is As described above, the conventional packaging box described above has a problem that the operation of opening the body is complicated.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems and to provide a packaging box in which one side of the body can be easily opened.

In order to solve the above-mentioned problems, the present invention provides a packaging box, which comprises a cylindrical body having front and rear end walls and left and right side walls, and upper and lower cover plates provided at upper and lower openings of the body. and wherein the cover plate is formed by front and rear inner flaps connected to the both end walls and left and right outer flaps connected to the both side walls and superimposed on the outer surfaces of the inner flaps. At least one of the end walls has an unsealing start portion adjacent to the upper edge of the end wall, and two openings extending from the unsealing start portion toward left and right side edges of the end wall. A central cutting guide line of the book is formed.

When opening the packaging box of the present invention, insert a hand into the unsealing start portion of the end wall, grasp the part sandwiched between the two central cutting guide lines, and pull the part to the outside to open the central cutting guide line. can be easily cut open. When the part sandwiched between the two central cutting guide lines is further opened outward, the side edge of the end wall is torn toward the lower edge, so that the end wall forming one side of the trunk can be easily opened. can be made This allows the operator to easily pull out the contents.
In addition, since the lower end of the central cutting guide wire is located above the lower edge of the end wall, even if the central cutting guide wire breaks unintentionally during transportation, the break progresses at the lower end of the central cutting guide wire. will stop. In other words, even if the central cutting guide line is unintentionally broken during transportation or the like, the lower portion of the end wall can be maintained connected to the side wall, thereby preventing the contents from jumping out.

In the packaging box described above, if a side cut guide line extending from at least one of the central cut guide lines toward the upper corner of the end wall is formed, the side cut guide line is cut open. Thus, one side of the body can be easily opened.

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

With this configuration, the part sandwiched between the two central cutting guide lines can be easily pulled outward, so that the opening can be formed in the end wall more easily.

In the packaging box described above, it is preferable that the opening start portion is formed on the right or left side of the abutting portion between the outer flaps.

With this configuration, the unsealing start portion can be formed at a position avoiding the adhesive tape attached to the abutting portion of the outer flaps, so that the operator can insert his or her hand into the unsealing start portion of the end wall without opening the cover plate. be able to.

In the packaging box of the present invention, one side of the body can be easily opened.

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. It is the perspective view which showed the state before closing the upper cover plate in the packaging box which concerns on embodiment of this invention. Fig. 2 is a perspective view showing a state in which an end wall opening is opened in the packaging box according to the embodiment of the present invention; It is the perspective view which showed the state which opened the end wall 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, 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.

The packaging box 1 of the present embodiment, as shown in FIG. It is a cardboard box of the formula.
In this embodiment, as shown in FIG. 3, a packaging box 1 for containing a content A such as a PET bottle is shown as an example. In addition, in this embodiment, in order to make the configuration of the packaging box 1 easy to understand, illustration of the contents A is omitted in figures other than FIG. 3 .

As shown in FIG. 2, the packaging box 1 of the present embodiment 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.
The fold lines of the blank sheet S are ruled lines (pressed lines) formed by pressing the surface of the blank sheet S linearly. In addition, you may form an intermittent notch in a ruled line. By doing so, it becomes easier to fold the blank sheet S along the folding line.
Alternatively, the folded line may be configured by intermittently forming half-cut cuts obtained by cutting only the surface of the sheet or cuts penetrating the sheet into a linear shape.

Each cutting guide line formed in the blank sheet S is a perforated line in which notches are intermittently formed. Note that the shape and length of the cut are not limited. Also, 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 a pair of front and rear end walls 11 and 12 and a pair of left and right side walls 13 and 14, as shown in FIG. Both end walls 11 and 12 and both side walls 13 and 14 are formed in a quadrangular shape when viewed from the side (see FIG. 2).
The right side wall 13 is connected to the right edge (right side edge) of the front end wall 11 through a broken line, and the rear edge of the right side wall 13 is joined through a broken line to form a belt-like joint. Pieces 15 are connected. A left side wall 14 is connected to the left edge (left side edge) of the front end wall 11 via a broken line, and a rear edge of the left side wall 14 is connected to the rear edge of the left side wall 14 via the broken line. end walls 12 are continuously provided. The joint piece 15 is joined to the inner surface of the rear end wall 12 .

When the blank sheet S (see FIG. 2) is folded along each ruled line and the joining piece 15 is joined to the inner surface of the rear end wall 12, as shown in FIG. , a tubular trunk portion 10 which is rectangular in plan view is formed.

As shown in FIG. 1 , the upper cover plate 20 closes the upper opening of the body 10 . The upper cover plate 20 includes a pair of front and rear inner flaps 21, 21 connected to the upper edge portions of the front and rear end walls 11, 12, respectively, and the upper edge portions of the left and right side walls 13, 14, respectively. A pair of left and right outer flaps 22, 22 are provided. The upper cover plate 20 is formed by overlapping the outer flaps 22, 22 on the outer surfaces (upper surfaces) of the inner flaps 21, 21, and abutting the outer flaps 22, 22 together.

A first adhesive tape T1 extending in the front-rear direction is attached to the outer surfaces of the butted portions of the outer flaps 22, 22. As shown in FIG. The front and rear end portions of the first adhesive tape T1 are attached to the upper end portions of the front and rear end walls 11 and 12, respectively. In this manner, both outer flaps 22, 22 are fixed in the closed state.

The lower lid plate 30 closes the lower opening of the body 10 . The lower cover plate 30 includes a pair of front and rear inner flaps 31, 31 connected to the lower edge portions of the front and rear end walls 11, 12, respectively, and connected to the lower edge portions of the left and right side walls 13, 14, respectively. and a pair of left and right outer flaps 32, 32. The lower cover plate 30 is formed by overlapping the outer flaps 32, 32 on the outer surfaces (lower surfaces) of the inner flaps 31, 31 and abutting the outer flaps 32, 32 together.

In addition, the second adhesive tape T2 is attached to the butted portions of the outer flaps 32, 32 of the lower lid plate 30, similarly to the upper lid plate 20. The end portions are attached to the lower end portions of the front and rear end walls 11 and 12, respectively.

The front end wall 11 is divided into a first wall portion 51 , second wall portions 52 , 52 and an unsealing start portion 55 . The opening start portion 55 is formed at a position adjacent to the upper edge of the end wall 11 . The end wall 11 is formed with two central cutting guide lines L11 and L12 extending from the unsealing start portion 55 toward the left and right side edges of the end wall 11, respectively. The first wall portion 51 is an area surrounded by the two central cutting guide lines L11 and L12, the unsealing start portion 55, and the lower edge portion of the end wall 11, and extends downward from the unsealing start portion 55. It has a shape in which the width dimension increases accordingly. Further, the second wall portions 52, 52 are regions outside the central cutting guide lines L11, L12 with respect to the first wall portion 51. As shown in FIG. That is, the second wall portions 52 , 52 are areas on both left and right sides of the first wall portion 51 . The second wall portion 52 on the right side is surrounded by the central cutting guide line L11 on the right side, the opening start portion 55, the upper edge portion of the end wall 11, and the right edge portion of the end wall 11. As shown in FIG. The left second wall portion 52 is surrounded by the left central cutting guide line L12, the opening start portion 55, the upper edge portion of the end wall 11, and the left edge portion of the end wall 11. As shown in FIG.
Further, the end wall 11 is formed with side cutting guide lines L13 and L14 that divide the second wall portions 52 and 52 . That is, the second wall portion 52 can be divided into a substantially triangular portion connected to the side edges of the end wall 11 and a substantially triangular portion connected to the upper edge of the end wall 11 .

The unsealing start portion 55 is a region surrounded by the upper edge of the end wall 11 and a substantially U-shaped cutting guide line connected to the upper edge of the end wall 11 . A through hole is formed by pushing or pulling out the opening start portion 55 while breaking the substantially U-shaped cutting guide wire. In the present embodiment, the unsealing start portion 55 is formed on the left side of the lateral center portion of the end wall 51 (the abutment portion of the outer flaps 22, 22). More specifically, the opening start portion 55 is configured to the left of the center at a position where the first adhesive tape T1 (see FIG. 1) does not interfere.

The right central cutting guide line L11 extends from the unsealing start portion 55 toward the right side of the end wall 11, and is formed in a curved shape so as to bulge away from the upper right corner of the end wall 11. there is The lower end of the right central cutting guide line L11 is positioned above the lower edge of the end wall 11 .

The left central cutting guide line L12 extends from the unsealing start portion 55 toward the left side of the end wall 11, and is formed in a curved shape so as to swell in a direction away from the left upper corner of the end wall 11. there is The lower end of the left central cutting guide line L12 is located above the lower edge of the end wall 11 .

The right side cutting guide line L13 extends from the middle portion of the right central cutting guide line L11 toward the upper right corner of the end wall 11 .
The left side cutting guide line L14 extends from the middle of the left central cutting guide line L12 toward the upper left corner of the end wall 11 .

As shown in FIG. 3, in the packaging box 1 of the present embodiment, four contents A such as PET bottles are accommodated on the lower side, and four contents A are further stacked and accommodated thereon. .

As shown in FIG. 4, when an operator inserts his or her hand into the unsealing starter 55, the unsealing starter 55 is pushed inward and opened. This allows the operator to grip the upper portion of the first wall portion 51 (the portion adjacent to the opening start portion 55).

Then, when the operator pulls out the first wall portion 51 to the outside, the left and right central cutting guide lines L11 and L12 are broken from the upper side toward the lower side.

After the left and right central cutting guide lines L11, L12 have reached the side edge of the end wall 11, the first wall 51 is further opened, and the side edge of the end wall 11 is directed toward the lower edge. It is slit to form an opening 56 in the end wall 11 .

After that, as shown in FIG. 5 , when the operator grips the left and right second wall portions 52 and pulls them out, the side cutting guide lines L13 and L14 extend from the opening 56 side to the upper side of the end wall 11. The end wall 11 is completely opened by breaking toward the corners.

In the packaging box 1 as described above, as shown in FIG. 4, an operator inserts his or her hand into the unsealing start portion 55 of the end wall 11 and pushes the unsealing start portion 55 inward, thereby unsealing the first wall portion 51. The portion adjacent to the starting portion 55 can be securely gripped. Then, by pulling the first wall portion 51 outward, a part of the end wall 11 forming one surface of the trunk portion 10 can be easily opened. This allows the worker to easily take out the content A (see FIG. 3). In addition, since the lower ends of the central cutting guide lines L11 and L12 are positioned above the lower edge of the end wall 11, even if the central cutting guide lines L11 and L12 are unintentionally broken during transportation, the central cutting guide lines L11 and L12 can still be cut. The progress of fracture stops at the lower ends of the lines L11 and L12. In other words, even if the central cutting guide lines L11 and L12 are unintentionally broken during transportation, etc., the lower part of the end wall 11 can be maintained connected to the side wall, so the contents A can be prevented from jumping out.

In the packaging box 1 of this embodiment, as shown in FIG. The part covered with can be easily opened. That is, regardless of the shape of the content A, the content A can be easily taken out.

In the packaging box 1 of this embodiment, as shown in FIG. 1, the left and right center cutting guide lines L11 and L12 of the end wall 11 are curved lines. With this configuration, the first wall portion 51 can be easily pulled outward, so the opening portion 56 can be formed in the end wall 11 more easily.

In the packaging box 1 of this embodiment, as shown in FIG. 1, the opening start portion 55 is formed on the left side of the butted portion of the outer flaps 22,22. With this configuration, the unsealing start portion 55 can be formed at a position avoiding the first adhesive tape T1 attached to the abutted portion of the outer flaps 22, 22, so that the operator can easily open the end wall without opening the cover plate 20. A hand can be inserted into the opening start part 55 of 11.

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.
In this embodiment, as shown in FIG. 1, the front end wall 11 is configured to open, but the rear end wall 12 may also be configured to open.

In the packaging box 1 of this embodiment, the opening start portion 55 is formed on the right side of the butted portion of the outer flaps 22, 22 so that the first adhesive tape T1 does not interfere. Depending on the shape, the unsealing start portion 55 may be formed in the center or left side of the end wall 11 in the left-right direction.

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

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 trunk 11 front end wall 12 rear end wall 13 right side wall 14 left side wall 15 joining piece 20 upper lid plate 21 inner flap 22 outer flap 30 lower lid plate 31 inner flap 32 outer Flap 51 First wall portion 52 Second wall portion 55 Opening start portion L11 Central cutting guide line (right side)
L12 center cutting guide line (left side)
L13 side cutting guide wire (right side)
L14 side cutting guide wire (left side)
S Blank sheet T1 First adhesive tape T2 Second adhesive tape A Contents

Claims (4)

a tubular body having front and rear end walls and left and right side walls;
and upper and lower cover plates provided in the upper and lower openings of the body,
The lid plate
front and rear inner flaps connected to the end walls;
and left and right outer flaps connected to the both side walls and superimposed on the outer surfaces of the inner flaps,
At least one of said end walls includes:
an opening initiation portion adjacent to the upper edge of the end wall;
A packaging box, wherein two central cutting guide lines extending from said unsealing start portion toward left and right side edge portions of said end wall are formed. The packaging box according to claim 1,
A packaging box, wherein the end walls are formed with side cutting guide lines extending from at least one of the central cutting guide lines toward upper corners of the end walls. The packaging box according to claim 1 or claim 2,
The packaging box, wherein the central cutting guide line is curved. The packaging box according to any one of claims 1 to 3,
The packaging box, wherein the unsealing start portion is formed on the right side or the left side of the abutting portion between the outer flaps.

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