JP2020045158A - Packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging box capable of displaying contents by opening a large opening at the time of opening while sufficiently securing a load capacity before opening. SOLUTION: The packaging box 1 has a body portion 10 having front and rear end walls 11 and 11 and left and right side walls 12, 12 and a top plate 20 and a bottom plate 30 connected to the end wall 11. ing. Left and right vertical cutting guide lines L1 and L1 extending in the vertical direction are formed on the end wall 11. The top plate 20 is formed with an upper cutting guide line L2 continuous with both vertical cutting guide lines L1 and L1, and the bottom plate 30 is formed with a lower cutting continuous with both vertical cutting guide lines L1 and L1. The guide line L3 is formed. A cutout portion 40 is formed on the top plate 20, the end wall 11, and the bottom plate 30. [Selection diagram] Fig. 3

Description

  The present invention relates to a packaging box.

  As a packaging box made of corrugated cardboard, a packaging box having a cylindrical body, a top plate and a bottom plate, which can be cut open from the top plate to the body to open the packaging box and display the contents. (For example, see Patent Document 1).

JP-A-2006-190645

  On the body of the conventional packaging box described above, there are two vertical cutting guide lines extending vertically and a horizontal cutting guide line extending horizontally between the two vertical cutting guide lines. Is formed. When the transverse cutting guide line is formed on the body in this way, the strength of the body against a load from above is reduced, and thus there is a problem that the load resistance of the packaging box before opening is reduced.

  SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a packaging box in which contents can be displayed with a large opening at the time of opening while sufficiently securing a load resistance before opening.

  In order to solve the above problems, the present invention is a packaging box, a tubular body having front and rear end walls and left and right side walls, a top plate connected to an upper edge of the end wall, A bottom plate connected to the lower edge of the end wall. Left and right vertical cutting guide lines extending vertically from the upper edge to the lower edge are formed on the end wall. The top plate is formed with an upper cutting guide line that is continuous with the upper ends of the two vertical cutting guide lines, and the bottom plate is a lower side that is continuous with the lower ends of the two vertical cutting guide lines. A cutting guide line is formed. The top plate, the end wall, and the bottom plate each have a cutout section defined by the upper cutting guide line, the longitudinal cutting guide lines, and the lower cutting guide line.

  In the packaging box of the present invention, when the upper cutting guide line, the vertical cutting guide line, and the lower cutting guide line are cut open, an opening is formed across the top plate, the body, and the bottom plate. Therefore, in the packaging box of the present invention, the contents can be displayed by being opened greatly at the time of opening, and the contents can be easily taken out.

  When only the vertical cutting guide line extending in the vertical direction is formed on the body as in the packaging box of the present invention, compared to the case where the cutting guide line extending in the horizontal direction is formed on the body. Thus, it is possible to suppress a decrease in the strength of the trunk portion with respect to a load from above. Therefore, in the packaging box of the present invention, the load resistance before opening can be sufficiently ensured.

In the packaging box described above, it is preferable that an inner flap continuously provided on an upper edge portion of the side wall is overlapped on an inner surface of the top plate other than the cutout portion.
With this configuration, when the packaging box is opened, the inner flap is not exposed in the opening, so that the appearance of the packaging box after opening is improved and the contents can be easily taken out from the opening.

In the packaging box described above, the upper cutting guide line is formed with left and right inclined lines extending from the center side of the top plate toward the end wall, and the left and right gaps between the two inclined lines are formed. Preferably, the top plate is widened from the center side toward the end wall side.
In this configuration, since the distance between the two inclined lines in the left-right direction is narrower at the center of the top plate than at the end wall, when the upper cutting guide line starts to be cut open from the center of the top plate, force is applied to the cutting start position. You will concentrate. Therefore, the upper cutting guide line can be cut open smoothly.

  In the packaging box of the present invention, the contents can be displayed with a large opening at the time of opening while sufficiently securing the load resistance before opening, and the contents can be easily taken out.

It is the perspective view which looked at before the opening of the packaging box concerning embodiment of this invention from the front upper right. It is a figure showing the blank sheet of the packaging box concerning the embodiment of the present invention. It is the perspective view which looked at the state where the packaging box concerning the embodiment of the present invention was opened from the front upper right. It is the front view which showed the packaging box which concerns on embodiment of this invention. It is a rear view showing the packaging box concerning the embodiment of the present invention. It is a right side view showing the packaging box concerning the embodiment of the present invention. It is the left view which showed the packaging box which concerns on embodiment of this invention. It is a top view showing the packaging box concerning the embodiment of the present invention. It is a bottom view showing the packaging box concerning the embodiment of the present invention. It is the perspective view showing the state where the packaging boxes concerning the embodiment of the present invention were piled up. It is the perspective view which showed the state which arrange | positioned with the side wall below in the packaging box which concerns on embodiment of this invention. It is a bottom view showing a packaging box of a modification of an embodiment of the present invention. It is the perspective view which looked at the state which opened the packaging box of the modification of an embodiment of the present invention from the front upper right.

An embodiment 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 of the packaging box of the present invention.

  As shown in FIG. 1, the packaging box 1 according to the present embodiment includes a square tubular body 10, a top plate 20 connected to an upper edge of the body 10, and a lower edge of the body 10. And a bottom plate 30 provided. The packaging box 1 of the present embodiment is an A-type cardboard box.

As shown in FIG. 2, the packaging box 1 is formed by folding a blank sheet S obtained by cutting a corrugated cardboard sheet into mountain lines or valley lines at each ruled line. 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 (pressed rule) formed by pressing the surface of the blank sheet S. Note that a cut may be formed in the ruled line. This makes it easier to bend the blank sheet S at the ruled line.

As shown in FIG. 1, the body 10 has a pair of front and rear end walls 11, 11 and a pair of left and right side walls 12, 12. Each of the end wall 11 and the side wall 12 is a rectangular wall.
A left side wall 12 is connected to the left edge of the front end wall 11 via a ruled line. Further, a right side wall 12 is continuously provided on the right edge of the front end wall 11 via a ruled line. A rear end wall 11 is connected to the rear edge of the left side wall 12 via a ruled line. A band-shaped joining piece 13 is continuously provided on the rear edge of the right side wall 12 via a ruled line.

  When the joining piece 13 is joined to the inner surface of the rear end wall 11 by an adhesive means such as hot melt while bending the blank sheet S (see FIG. 2) at each ruled line, the front and rear end walls 11, 11 and the left and right side walls A square body 10 in the form of a square tube is formed by the parts 12 and 12.

On the front end wall 11, two left and right vertical cutting guide lines L1 and L1 extending vertically are formed. The left and right vertical cutting guide lines L1 and L1 are arranged at regular intervals in the left and right direction.
The vertical cutting guide line L1 is a perforated line in which cuts are formed intermittently. The interval and shape of the cut of the vertical cutting guide line L1 are not limited.

The vertical cutting guide line L1 is formed linearly from the upper edge to the lower edge of the end wall 11, as shown in FIG. The vertical cutting guide line L <b> 1 is formed perpendicular to the upper edge and the lower edge of the end wall 11, and is parallel to the side edge of the end wall 11.
As described above, the vertical cutting guide line L1 is arranged at a certain interval in the left-right direction with respect to the side edge of the end wall 11. Accordingly, a rectangular area is formed between the right edge of the end wall 11 and the right vertical cutting guide line L1. A rectangular area is also formed between the left edge of the end wall 11 and the left vertical cutting guide line L1.

The front end wall 11 has an intermediate cutout 41 defined by an upper edge, left and right vertical cutting guide lines L1 and L1, and a lower edge. The intermediate cutout 41 is a rectangular area.
As shown in FIG. 3, the interval between the left and right vertical cutting guide lines L1 and L1 in the left and right direction is the width of the opening 50 formed in the end wall 11 when the intermediate cutout 41 is cut off from the end wall 11. Of width. Therefore, the interval between the left and right vertical cutting guide lines L1 and L1 in the left and right direction is set in consideration of how the contents can be seen from the opening 50 and how easily the contents can be taken out from the opening 50.

  As shown in FIG. 1, the top plate 20 closes an upper opening of the body 10. The top plate 20 includes a pair of front and rear upper outer flaps 21 and 21 connected to the upper edges of the front and rear end walls 11 and 11. On the inner surface (lower surface) of the top plate 20, a pair of left and right upper inner flaps 22, 22 connected to the upper edges of the left and right side walls 12, 12 are overlapped.

The front upper flap 21 is a rectangular flat plate, and extends rearward from the upper edge of the front end wall 11. The front half of the upper opening of the body 10 is closed by the front upper outer flap 21.
The rear upper flap 21 is a rectangular flat plate, and extends forward from the upper edge of the rear end wall 11. The rear half of the upper opening of the body 10 is closed by the upper outer flap 21 on the rear side.

  The front end edges of the front and rear upper outer flaps 21 and 21 are butted. The upper edges of the body 10 are closed by the upper outer flaps 21 and 21 by joining the tip edges of the upper outer flaps 21 and 21 with an adhesive tape (not shown).

  An upper cutting guide line L2 is formed on the front upper outer flap 21. The upper cutting guide line L2 is a perforated line in which cuts are formed intermittently. The interval and shape of the cut of the upper cutting guide line L2 are not limited.

  The upper cutting guide line L2 includes a first line portion L21 extending in the left-right direction, and two left and right inclined line portions extending from the left and right ends of the first line portion L21 toward the front end wall 11. L22 and L22 are formed.

The first line portion L21 is disposed on the front end side (rear side) of the front upper side outer flap 21 with respect to the center in the front-rear direction. The central portion of the first line portion L21 is disposed at the central portion of the upper outer flap 21 in the left-right direction (see FIG. 8).
The first line portion L21 is parallel to the front edge of the upper outer flap 21. The length of the first line portion L21 is shorter than the interval between the left and right vertical cutting guide lines L1 and L1 in the left-right direction.

  An opening start hole 23 is formed at the center of the first line portion L21. The opening start hole 23 penetrates the upper outer flap 21. In the state of the blank sheet S (see FIG. 2), the opening start hole 23 is closed by the closing piece 24. At the time of opening the packaging box 1, the opening start hole 23 is opened by pushing the closing piece 24 from the outside to the inside.

The inclined line portion L22 extends from the end of the first line portion L21 toward the front edge of the upper outer flap 21. That is, the inclined line portion L22 extends from the center side of the top plate 20 toward the front end wall 11 side.
The left inclined line portion L22 is formed from the left end portion of the first line portion L21 to the upper end portion of the left vertical cutting guide line L1. The right inclined line portion L22 is formed from the right end of the first line portion L21 to the upper end of the right vertical cutting guide line L1.
The interval between the two inclined line portions L22, L22 in the left-right direction increases from the center of the top plate 20 toward the front end wall 11 (see FIG. 8).

  On the front upper outer flap 21, an upper cutout 42 is formed which is partitioned by the upper cutting guide line L <b> 2 and the front edge of the upper outer flap 21. The upper cutout 42 is a trapezoidal region, and the width in the left-right direction increases from the center of the top plate 20 toward the front end wall 11 (see FIG. 8).

  The upper left inner flap 22 is a rectangular flat plate and extends rightward from the upper edge of the left side wall 12. The right upper inner flap 22 is a rectangular flat plate and extends leftward from the upper edge of the right side wall 12. The left and right upper inner flaps 22, 22 are overlapped on the inner surfaces (lower surfaces) of the front and rear upper outer flaps 21, 21, respectively.

As shown in FIG. 8, the front edge portion 22a of the left upper inner flap 22 extends along the left inclined line portion L22 of the upper outer flap 21, and is disposed behind the inclined line portion L22. I have. The front edge portion 22a of the right upper inner flap 22 extends along the right inclined line portion L22, and is disposed behind the inclined line portion L22.
As described above, in the packaging box 1 of the present embodiment, the front edges 22a, 22a of the left and right upper inner flaps 22, 22 are arranged behind the upper cutting guide line L2. Thus, the left and right upper inner flaps 22, 22 overlap the inner surfaces of the top plate 20 except for the upper cutout 42.

  As shown in FIG. 1, the bottom plate 30 closes a lower opening of the body 10. The bottom plate 30 includes a pair of front and rear lower outer flaps 31, 31 connected to lower edges of the front and rear end walls 11, 11. On the inner surface (upper surface) of the bottom plate 30, a pair of left and right lower inner flaps 32, 32 connected to the lower edges of the left and right side walls 12, 12 are overlapped.

As shown in FIG. 9, the front lower outer flap 31 is a rectangular flat plate, and extends rearward from the lower edge of the front end wall 11. The front half of the lower opening of the body 10 is closed by the lower outer flap 31 on the front side.
The rear lower outer flap 31 is a rectangular flat plate, and extends forward from the lower edge of the rear end wall 11. The rear half of the lower opening of the body 10 is closed by the rear lower outer flap 31.

  The front end edges of the front and rear lower outer flaps 31, 31 are abutted. Then, the lower edges of the body 10 are closed by the lower outer flaps 31, 31 by joining the tip edges of the lower outer flaps 31, 31 with an adhesive tape (not shown). I have.

  A lower cutting guide line L3 is formed on the lower outer flap 31 on the front side. The lower cutting guide line L3 is a perforated line in which cuts are formed intermittently. The interval and shape of the cut of the lower cutting guide line L3 are not limited.

  The lower cutting guide line L3 includes a first line portion L31 extending in the left-right direction, and two left and right second lines extending from left and right ends of the first line portion L31 toward the front end wall 11. The parts L32 and L32 are formed.

The first line portion L31 is disposed on the front side with respect to the central portion of the lower outer flap 31 in the front-rear direction. The central portion of the first line portion L31 is disposed at the central portion of the upper outer flap 21 in the left-right direction.
The first line portion L31 is parallel to the front edge of the lower outer flap 31. The length of the first line portion L31 is the same as the interval between the left and right vertical cutting guide lines L1 and L1 in the left-right direction.

As shown in FIG. 3, the left second line portion L32 is connected to the lower end of the left vertical cutting guide line L1, and the right second line portion L32 is connected to the lower end of the right vertical cutting guide line L1. It is connected.
As shown in FIGS. 4 and 9, the ruled line L10 between the front end wall 11 and the front lower outer flap 31 (the bottom plate 30) has a second line portion L32 (a lower cutting guide line L3). ) And the cut of the vertical cutting guide line L1 are not formed. That is, the cuts of the lower cutting guide line L3 and the vertical cutting guide line L1 are not formed on the ridge line at the corner between the front end wall 11 and the bottom plate 30.

As shown in FIG. 9, the front lower outer flap 31 is formed with a lower cutout 43 partitioned by a lower cutting guide line L <b> 3 and a front edge of the lower outer flap 31. The lower cutout 43 is a rectangular area.
As shown in FIG. 3, the lower cutout 43 has a smaller area than the upper cutout 42. Therefore, the opening area of the bottom plate 30 when the lower cutout 43 is separated from the bottom plate 30 is formed smaller than the opening area when the upper cutout 42 is separated from the top plate 20.

  As shown in FIG. 1, the lower left inner flap 32 is a rectangular flat plate, and extends rightward from the lower edge of the left side wall 12. The right lower inner flap 32 is a rectangular flat plate and extends leftward from the lower edge of the right side wall 12. The left and right lower inner flaps 32, 32 are overlapped on the inner surfaces (upper surfaces) of the front and rear lower outer flaps 31, 31, respectively.

  In the packaging box 1 of the present embodiment, an upper cutout portion 42, an intermediate cutout portion 41, and a lower cutout portion 43 are formed continuously. The upper cutout portion 42, the middle cutout portion 41, and the lower cutout portion 43 form a cutout portion 40. The cutout portion 40 is formed over the top plate 20, the body portion 10, and the bottom plate 30.

  When storing or transporting or storing the contents in the packaging box 1 of the present embodiment, the packaging box 1 is arranged so that the top plate 20 is on the upper side, similarly to a general A-type cardboard box. Only the vertical cutting guide lines L1 and L1 extending in the vertical direction are formed on the body 10 of the packaging box 1 of the present embodiment. Therefore, as compared with the case where the cutting guide line extending in the lateral direction is formed on the body 10, a decrease in the strength of the body 10 against a load from above is suppressed. Therefore, the packaging box 1 of the present embodiment can sufficiently secure the load resistance before opening.

In the packaging box 1 of the present embodiment, as shown in FIGS. 4 and 9, a lower cutting guide line L <b> 3 and a vertical cutting guide are provided on the ridgeline (ruled line L <b> 10) of the corner between the front end wall 11 and the bottom plate 30. No cut in the line L1 is formed. Therefore, in the packaging box 1 of the present embodiment, the strength of the corners between the end wall 11 and the bottom plate 30 is high, so that when the packaging box 1 is placed on the floor with the bottom plate 30 down, the end wall 11 The corners with the bottom plate 30 are not easily deformed.
In addition, by forming a cut in the ridgeline of the corner between the front end wall 11 and the bottom plate 30, the cutout portion 40 can be easily cut off. In this manner, it is possible to select whether or not to cut into the ridge of the corner between the front end wall 11 and the bottom plate 30 according to the strength of the packaging box 1 and the ease of opening.
Further, in the packaging box 1 of the present embodiment, as shown in FIG. 3, since the area of the lower cutout 43 is smaller than the area of the upper cutout 42, the strength of the bottom plate 30 is sufficiently ensured.

  When opening the packaging box 1 of the present embodiment, the operator inserts his / her finger into the opening start hole 23 of the top plate 20 and pulls up the upper cutout portion 42. It is cut open toward the end wall 11 side. Thereby, the upper cutout 42 is separated from the top plate 20.

  In the packaging box 1 of the present embodiment, since the distance between the left and right inclined lines L22, L22 of the upper cutting guide line L2 in the left-right direction is smaller on the center side of the top plate 20 than on the end wall 11, the upper cutting guide line is provided. When the line L2 starts to be cut open from the center side of the top plate 20, the force concentrates on the cutting start position. Therefore, the upper cutting guide line L2 can be cut open smoothly.

Subsequently, when the upper cutout portion 42 is pulled outside the front end wall 11, the left and right vertical cutting guide lines L1 and L1 are cut open from the upper end portion to the lower end portion. Thereby, the intermediate cutout 41 is cut off from the front end wall 11.
Further, when the direction of the packaging box 1 is changed so that the front end wall 11 is arranged on the upper side, and the upper cutout portion 42 and the intermediate cutout portion 41 are drawn out of the bottom plate 30, the lower cutout guide line L3 is cut open. It is. Thereby, the lower cutout 43 is cut off from the bottom plate 30.

  As described above, in the packaging box 1 of the present embodiment, when the upper cutting guide line L2, both vertical cutting guide lines L1, L1 and the lower cutting guide line L3 are cut open, the top plate 20, the trunk portion 10, and the bottom plate 30 are extended. Thus, an opening 50 is formed. Then, in the packaging box 1 of the present embodiment, the contents can be displayed by being greatly opened at the time of opening, and the contents can be easily taken out.

  In the packaging box 1 of the present embodiment, the opening area of the bottom plate 30 when the lower cutout 43 is cut off from the bottom plate 30 is formed smaller than the opening area when the upper cutout 42 is cut off from the top plate 20. You. Therefore, in the packaging box 1 of the present embodiment, the strength of the bottom plate 30 is sufficiently ensured even after opening, and when the packaging box 1 is lifted, the contents are unlikely to fall from the opening 50.

  Further, in the packaging box 1 of the present embodiment, the upper inner flaps 22, 22 are overlapped on the inner surface of a portion of the top plate 20 other than the upper cutout portion 42. Thereby, when the packaging box 1 is opened, the left and right upper inner flaps 22, 22 are not exposed in the opening 50, so that the appearance of the packaging box 1 after opening is improved and the contents are removed from the opening 50. Easy to take out.

  As shown in FIG. 10, the opened packaging box 1 can be displayed at a store with another packaging box 1 stacked on the top surface of the top plate 20. In addition, the opened packaging box 1 can be displayed at a store with one side wall 12 arranged on the lower side as shown in FIG.

As described above, the embodiments of the present invention have been described, but the present invention is not limited to the above embodiments, and can be appropriately changed without departing from the gist of the present invention.
For example, as shown in FIG. 12, the left and right lower inner flaps 32, 32 connected to the lower edge of the side wall 12 overlap the inner surface of the bottom plate 30 except for the lower cutout 43. May be.
In this configuration, as shown in FIG. 13, when the packaging box 1 is opened, the left and right lower inner flaps 32, 32 are not exposed in the opening 50, so that the appearance of the packaging box 1 after opening is improved. At the same time, the contents can be easily taken out from the opening 50.

  In the packaging box 1 of the present embodiment, as shown in FIG. 1, the top plate 20 and the bottom plate 30 are configured by two outer flaps, but the configurations of the top plate 20 and the bottom plate 30 are not limited. For example, the upper and lower openings of the body 10 may be closed by a single top plate or bottom plate.

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

DESCRIPTION OF SYMBOLS 1 Packaging box 10 Body 11 End wall 12 Side wall 13 Joining piece 20 Top plate 21 Upper outer flap 22 Upper inner flap 23 Opening start hole 24 Closure piece 30 Bottom plate 31 Lower outer flap 32 Lower inner flap 40 Cutout 41 Intermediate cutout 42 Upper cutout 43 Lower cutout 50 Opening L1 Vertical cutting guide line L2 Upper cutting guide line L3 Lower cutting guide line L21 First line (upper cutting guide line)
L22 Inclined line (upper cutting guide line)
L31 First line part (lower cutting guide line)
L32 2nd line (lower cutting guide line)
S blank sheet

Claims (3)

A cylindrical body having front and rear end walls and left and right side walls,
A top plate connected to the upper edge of the end wall,
A bottom plate connected to the lower edge of the end wall,
On the end wall, left and right vertical cutting guide lines extending vertically from the upper edge to the lower edge are formed,
The top plate is formed with an upper cutting guide line that is continuous with the upper end portions of the vertical cutting guide lines,
On the bottom plate, a lower cutting guide line that is continuous with lower end portions of the vertical cutting guide lines is formed,
A packaging box, wherein the top plate, the end wall, and the bottom plate are formed with a cutout section defined by the upper cutting guide line, the longitudinal cutting guide lines, and the lower cutting guide line. The packaging box according to claim 1,
An inner flap connected to an upper edge portion of the side wall is overlapped on an inner surface of a portion other than the cutout portion of the top plate. A packaging box according to claim 1 or claim 2,
In the upper cutting guide line, left and right inclined line portions extending from the center side of the top plate toward the end wall side are formed,
A packing box, wherein the interval between the two inclined lines in the left-right direction increases from the center of the top plate toward the end wall.

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