JP7409962B2 - packaging box - Google Patents

Description

The present invention relates to packaging boxes.

Patent Document 1 discloses a wrap-around packaging box that includes a peripheral wall having a top plate, a bottom plate, a front plate, and a rear plate, and a pair of lid walls that close an opening in the peripheral wall. Each lid wall has a first flap connected to the front plate, a second flap connected to the rear plate, a third flap connected to the top plate, and a fourth flap connected to the bottom plate. A break line is provided between the top plate and the back plate. The third flap is attached to the first flap and not attached to the second flap. The fourth flap is attached to both the first flap and the second flap.

When opening the bag, the top plate and the rear plate are separated by breaking along the break line, and the top plate is rotated toward the front plate to release the first flap and the fourth flap. Thereby, a lower part includes a bottom plate, a rear plate, a pair of second flaps, and a pair of fourth flaps, and an upper part includes a top plate, a front plate, a pair of first flaps, and a pair of third flaps. In addition, the packaging box can be separated and opened.

Patent No. 6452991

After opening, the lower part containing the article is placed at the store, and the upper part, which is no longer needed, is discarded. However, in the upper part, the first flap and the third flap are attached, and the top plate and front plate are in a bent state, so if it is discarded as is, it will be bulky. Therefore, the packaging box of Patent Document 1 has room for improvement in terms of disposability.

An object of the present invention is to provide a packaging box that can improve the ease of disposing of parts that are no longer needed after opening.

The packaging box of the present invention includes a top plate extending in a first direction and a second direction intersecting the first direction; a first side plate extending in a third direction intersecting the two directions and the second direction; a second side plate continuous with the other end of the top plate in the first direction and facing the first side plate; a pair of first flaps that are connected to both ends of the first side plate in two directions and extend in the first direction and the third direction toward the second side plate; a pair of second flaps that are connected to both ends and extend toward the first side plate; and one of the pair of first flaps that is connected to a first side that is one end of the top plate in the second direction. and a third flap disposed on the outer surface side of one of the pair of second flaps, and a third flap that is connected to the second side that is the other end of the top plate in the second direction, and a fourth flap disposed on the outer surface side of the other one of the first flaps and on the outer surface side of the other one of the pair of second flaps; and a fourth flap provided on the top plate and extending from the first side to the second side. a first break line extending in the second direction; a second break line provided on the first side and extending toward the first side plate from the intersection of the first side and the first break line; a pair of third breaks provided on each of the third flap and the fourth flap, each extending in the third direction from the intersection of the first side and the first break line and the intersection of the second side and the first break line; line, a portion of the third flap closer to the first side plate than the third break line, and a first adhesion portion that adheres the first flap located on the inner surface side of the third flap. Be prepared.
A first aspect of the present invention is that a portion of the fourth flap closer to the first side plate than the third break line and the first flap located on the inner surface side of the fourth flap are in a non-adhered state. We provide packaging boxes.
A second aspect of the present invention is characterized in that a fourth break line is provided on the second side and extends from the intersection of the second side and the first break line toward the second side plate; The present invention provides a packaging box further comprising a second adhering portion to which a portion closer to the second side plate than the third break line and the second flap located on the inner surface side of the fourth flap are adhered.
A third aspect of the present invention is an exterior member comprising the top plate, the first side plate, the second side plate, the pair of first flaps, the pair of second flaps, the third flap, and the fourth flap. a bottom plate facing the top plate; and an outer peripheral wall that stands up from the outer periphery of the bottom plate and is arranged on the inner side of the first side plate, the second side plate, the first flap, and the second flap. and a third adhesion part in which a tray separate from the exterior member, a first portion of the outer peripheral wall located on the inner surface side of the first side plate, and the first side plate are adhered; a second portion of the outer peripheral wall located on the inner surface side of the second side plate; a fourth adhesive portion formed on the first portion and attached to the second side plate; and a third adhesive portion formed on the first portion. A packaging box is provided, further comprising: a fifth break line for separating the area including the fourth adhesive part; and a sixth break line formed on the second part for separating the area including the fourth adhesive part.

In this aspect, when opening the package, the top plate is broken along the first break line, and the first portion of the top plate located on the first side plate side is pulled toward the first side plate side. Thereby, the top plate and the third flap are separated along the second breaking line, and subsequently, the third flap and the fourth flap are separated along the third breaking line. As a result, the first separating section consisting of the first part of the top plate, the first side plate, the pair of first flaps, the first part of the third flap, and the first part of the fourth flap is separated from the other parts. Ru. By breaking the top plate and the third flap along the second break line, the first separated portion becomes in a state where the first portion of the top plate and the first flap are flat with respect to the first side plate. In other words, since at least a portion of the first separating section can be separated into a flat expanded state, it is possible to prevent the first separating section from becoming bulky when discarding, and it is possible to improve the ease of disposal.

With the packaging box of the present invention, it is possible to improve the ease of disposing of parts that are no longer needed after opening.

FIG. 1 is a perspective view of a packaging box according to a first embodiment of the present invention. FIG. 1A is a sectional view taken along line II in FIG. 1A. FIG. 1B is a plan view of a blank of the exterior member that constitutes the packaging box of FIG. 1B. A partially enlarged view of FIG. 2A. FIG. 1B is a plan view of a tray blank that constitutes the packaging box of FIG. 1B. FIG. 1A is a perspective view showing a first opening step of the packaging box of FIG. 1A. FIG. 4B is a perspective view showing a state in which the state shown in FIG. 4A is expanded by repulsive force. The perspective view which shows the 2nd opening process of a packaging box. The perspective view which shows the 3rd unsealing process of a packaging box. FIG. 7 is a plan view showing a packaging box blank according to the second embodiment. FIG. 2 is a perspective view of a packaging box according to a second embodiment. FIG. 9 is a perspective view showing a step of opening the packaging box of FIG. 8; FIG. 9 is a perspective view showing another unsealing process of the packaging box of FIG. 8; FIG. 7 is a plan view showing a blank of a packaging box according to a third embodiment. FIG. 7 is a perspective view of a packaging box according to a third embodiment. FIG. 13 is a perspective view showing a step of opening the packaging box of FIG. 12; FIG. 13 is a perspective view showing another unsealing process of the packaging box of FIG. 12; FIG. 7 is a plan view showing a blank of a packaging box according to a fourth embodiment. FIG. 4 is a perspective view of a packaging box according to a fourth embodiment. FIG. 17 is a perspective view showing a step of opening the packaging box of FIG. 16; FIG. 17 is a perspective view showing another unsealing process of the packaging box of FIG. 16;

Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
1A and 1B show a packaging box 10 according to a first embodiment of the present invention. The packaging box 10 has a rectangular parallelepiped shape, and is opened by breaking a predetermined portion and separating the first separation section 14 shown in FIG. 5 and the second separation section 15 shown in FIG. 6. By making it possible to flatten the first separation section 14 and the second separation section 15 at the same time as this opening, the ease with which they can be disposed of is improved.

As shown in FIGS. 1A and 1B, the packaging box 10 is defined by a top plate 20, a front plate (first side plate) 21, a rear plate (second side plate) 22, a pair of lids 23A and 23B, and a bottom plate 27. has been done. Of these, the top plate 20, the front plate 21, the rear plate 22, and the pair of lids 23A and 23B are integrally provided as the exterior member 11. The other bottom plate 27 is provided as a part of the tray 12 that is separate from the exterior member 11. The exterior member 11 and the tray 12 constitute an integrated packaging box 10 by pasting (fixing) a predetermined portion of the exterior member 11 and the tray 12 with an adhesive such as a hot melt resin.

In the following description, the direction in which the front plate 21 and the rear plate 22 face each other is referred to as the X direction, the direction in which the lid parts 23A and 23B face each other is referred to as the Y direction, and the direction in which the top plate 20 and the bottom plate 27 face each other is referred to as the Z direction. There is a thing. The X direction is the first direction of the invention, the Y direction is the second direction of the invention, and the Z direction is the third direction of the invention, and these extend in directions perpendicular to each other. The dimensions of the packaging box 10 in the X direction, Y direction, and Z direction are changed depending on the articles stored therein.

The exterior member 11 and the tray 12 are each formed as a single blank shown in FIGS. 2A and 3 by punching out a cardboard sheet made of paper using a well-known paper carton punching device. The corrugated board sheet includes a front liner, a back liner spaced apart from the front liner, and a wavy batten disposed between the front liner and the back liner. The dashed-dotted lines in FIGS. 2A and 3 are general-purpose ruled lines that are formed from the back liner to partially reduce the thickness of the corrugated cardboard sheet. The solid lines in FIGS. 2A and 3 are cutting lines where the corrugated cardboard sheet was partially cut by inserting a blade from the back liner to the front liner.

The configurations of the exterior member 11 and the tray 12 will be specifically described below.

As shown in FIGS. 1A and 1B, the exterior member 11 is a cylinder whose upper end is closed and whose lower end is open. As described above, this exterior member 11 includes a top plate 20, a front plate 21, a rear plate 22, and a pair of lid portions 23A and 23B.

The top plate 20 has a rectangular shape and extends along the XY plane. The front plate 21 and the rear plate 22 have a rectangular shape with the same dimensions, and both extend along the YZ plane. The dimension of the top plate 20 in the Y direction, the dimension of the front plate 21 in the Y direction, and the dimension of the rear plate 22 in the Y direction are all the same.

The front plate 21 is connected to one end of the top plate 20 in the X direction via a bent portion 35, and the rear plate 22 is connected to the other end of the top plate 20 in the X direction via a bent portion 36. Referring to FIG. 2A, the front plate 21, the top plate 20, and the rear plate 22 are arranged in a row in this order via folding lines 35' and 36' forming folding parts 35 and 36. Both of the folding lines 35' and 36' are composed of general-purpose ruled lines.

The lid portions 23A and 23B have a rectangular shape and extend along the XZ plane. The dimensions of the lids 23A, 23B in the X direction are the same as the dimensions of the top plate 20 in the X direction, and the dimensions of the lids 23A, 23B in the Z direction are the same as the dimensions of the front plate 21 and the rear plate 22 in the Z direction. are the same. More specifically, each of the lid portions 23A, 23B includes front flaps 24A, 24B, rear flaps 25A, 25B, and upper flaps 26A, 26B.

The front flaps (first flaps) 24A and 24B are connected to both ends of the front plate 21 in the Y direction via the bent portion 37, and extend toward the rear plate 22. The rear flaps (second flaps) 25A and 25B are connected to both ends of the rear plate 22 in the Y direction via the bent portion 38, and extend toward the front plate 21. The dimension in the X direction of the front flaps 24A, 24B and the dimension in the X direction of the rear flaps 25A, 25B are both the same, and are approximately half of the dimension in the X direction between the front plate 21 and the rear plate 22. That is, the front flap 24A and the rear flap 25A, and the front flap 24B and the rear flap 25B are formed in such a size that their tips abut each other.

The upper flap (third flap) 26A is connected to one end of the top plate 20 in the Y direction via a bent portion (first side) 39A on one side in the Y direction, and overlaps the outer surface side of the flaps 24A and 25A. It is located. The upper flap (fourth flap) 26B is connected to the other end of the top plate 20 in the Y direction via a bent portion (second side) 39B on the other side in the Y direction, and overlaps the outer surface side of the flaps 24B and 25B. It is arranged as follows.

Referring to FIG. 2A, the front flap 24A, the rear flap 25A, and the upper flap 26A connect the front plate 21, the rear plate 22, and the They are connected to each other on the left side of the top plate 20. The front flap 24B, the rear flap 25B, and the upper flap 26B connect the front plate 21, the rear plate 22, and the top plate 20, respectively, via the folding lines 37', 38', and 39B' that constitute the folding parts 37, 38, and 39B. It is attached on the right side. Both of the folding lines 37' and 38' are composed of general-purpose ruled lines. Both of the folding lines 39A' and 39B' are constituted by a general-purpose ruled line 39a and breaking lines 56A and 56B, which will be described later.

As shown in FIGS. 1A and 1B, the upper flap 26A is attached to at least one of the front flap 24A and the rear flap 25A by an attachment portion 51A. The upper flap 26B is attached to at least one of the front flap 24B and the rear flap 25B by an attachment portion 51B. Thereby, the exterior member 11 is formed in which the front plate 21, the rear plate 22, and the pair of lid portions 23 protrude from the outer periphery of the top plate 20 so as to form a square tube shape. Note that the pasting parts 51A and 51B will be described in detail later.

As shown in FIGS. 1A and 1B, the tray 12 is a cylindrical body whose lower end is closed and whose upper end is open. This tray 12 includes the aforementioned bottom plate 27 and a square cylindrical outer circumferential wall 28 erected around the outer periphery of the bottom plate 27 .

The bottom plate 27 has a rectangular shape that is one size smaller than the top plate 20 and extends along the same XY plane as the top plate 20. The bottom plate 27 is disposed on the opposite side of the top plate 20 in the Z direction with respect to the front plate 21, the rear plate 22, and the pair of lids 23A and 23B, and closes the lower end opening of the exterior member 11.

The outer peripheral wall 28 includes a front plate portion (first portion) 29 disposed on the inner surface side of the front plate 21, a rear plate portion (second portion) 30 disposed on the inner surface side of the rear plate 22, and a lid portion 23A, Side plate portions 31A and 31B are provided on the inner surface side of 23B.

Both the front plate part 29 and the rear plate part 30 extend along the YZ plane. The dimension in the Y direction of the front plate part 29 and the dimension in the Y direction of the rear plate part 30 are smaller than the dimensions in the Y direction of the front plate 21 and the rear plate 22 by the thickness of two corrugated sheets. The front plate part 29 is connected to one end of the bottom plate 27 in the X direction via a bent part 40, and the rear plate part 30 is connected to the other end of the bottom plate 27 in the X direction via a bent part 41.

Both side plate portions 31A and 31B extend along the XZ plane. The dimension in the X direction of the side plate portions 31A, 31B is smaller than the dimension in the X direction of the lid portions 23A, 23B by the thickness of two corrugated cardboard sheets. The side plate portion 31A is connected to one end of the bottom plate 27 in the Y direction via a bent portion 42A, and the side plate portion 31B is connected to the other end of the bottom plate 27 in the Y direction via a bent portion 42B.

Referring to FIG. 3, the front plate part 29, the rear plate part 30, and the side plate parts 31A, 31B have folding lines 40', 41', 42A', 42B' that constitute the folding parts 40, 41, 42A, 42B. It is connected to the bottom plate 27 via the bottom plate 27 and protrudes from the bottom plate 27 in all directions. All of the folding lines 40', 41', 42A', and 42B' are composed of general-purpose ruled lines.

Referring to FIG. 3, a pair of attachment portions 32 are connected to each of the side plate portions 31A and 31B via a bending portion 43. In other words, the attachment portions 32 are connected to both ends of the side plate portion 31A in the X direction via the bending portions 43, and the attachment portions 32 are connected to both ends of the side plate portion 31B in the X direction via the bending portions 43. The sections 32 are arranged one after the other. Each of the folding lines 43' constituting the folding portion 43 is composed of a lead line consisting of a general-purpose line and a plurality of cutting lines.

Referring to FIGS. 2B and 6, one of the pair of attachment parts 32 connected to the side plate part 31A is attached to the inner surface of the front plate part 29 by the adhesive part 50, and the other is attached to the rear plate part. It is pasted on the inner surface side of 30 by the pasting part 50. Of the pair of attachment parts 32 connected to the side plate part 31B, one is attached to the inner surface of the front plate part 29 by the adhesive part 50, and the other is attached to the inner surface of the rear plate part 30 by the adhesive part 50. pasted by. As a result, the tray 12 is formed in which the front plate part 29, the rear plate part 30, and the pair of side plate parts 31A and 31B protrude from the outer periphery of the bottom plate 27 so as to form a square tube shape. Note that the adhesive portion 50 is a layer in which the above-described adhesive is solidified. The same applies to the adhesive portion described below.

The packaging box 10 is formed by pasting the exterior member 11 and the tray 12 configured in this way using the pasting parts 52A and 52B. In order to improve the ease of opening the packaging box 10 and the ease of disposing of unnecessary parts generated by opening, the packaging box 10 is provided with break lines 55 to 59, and the adhesive parts 51A, 51B, 52A, 52B The pasting position is set by

(Summary of breaking line for opening)
As shown in FIGS. 5 and 6, in order to separate the exterior member 11 into the first separating section 14 and the second separating section 15 in an expanded state, the packaging box 10 has break lines 55, 56A, 56B, 57A, 57B. is provided. Further, a break line 58 is provided to improve the separability of the first separation part 14 from the tray 11, and a break line 59 is provided to improve the separability of the second separation part 15 from the tray 11. There is.

As shown in FIGS. 1A and 1B, the breaking line 55 is provided on the top plate 20 and divides the top plate 20 into a front portion 20X and a rear portion 20Y. The breaking lines 56A, 56B are provided on the bent portions 39A, 39B, respectively, and separate the top plate 20 and a portion of the upper flaps 26A, 26B, respectively. The breaking lines 57A, 57B are provided on the upper flaps 26A, 26B, respectively, and divide the upper flaps 26A, 26B into a front portion 26X and a rear portion 26Y, respectively. The breaking line 58 is provided in the front plate part 29 and separates a part of the front plate part 29 including the adhesive part 52A from the remaining part. The breaking line 59 is provided in the rear plate part 30 and separates a part of the front plate part 29 including the adhesive part 52B from the remaining part.

The configuration of the break lines 55 to 59 will be specifically explained below.

As shown in FIGS. 1A and 2B, the break line (first break line) 55 is provided at the center of the top plate 20 in the X direction, and extends in the Y direction from the bent portion 39A to the bent portion 39B. The breaking line 55 is provided so as to be inclined from the upper flap 26A side to the upper flap 26B side and from the front plate 21 side to the rear plate 22 side. However, the breaking line 55 may be provided at a distance from the bending portions 35 and 36, and preferably in the middle region where the top plate 20 is divided into thirds in the X direction. The breaking line 55 of this embodiment is composed of an operating portion 55a located at the center and a pair of breaking portions 55e located on both sides of the operating portion 55a in the Y direction.

The operating portion 55a includes one folding line 55b, a pair of first breaking portions 55c, and one second breaking portion 55d. The folding line 55b is constituted by a general-purpose ruled line and extends in the Y direction. Each of the first breaking portions 55c is constituted by a plurality of cutting lines provided at breakable intervals, and extends outward in the Y direction from both ends of the folding line 55b. The second breaking portion 55d is constituted by a plurality of cutting lines provided at breakable intervals, and extends in an arc shape from one outer end to the other outer end of the pair of first breaking portions 55c, It is located at an interval in the X direction with respect to the folding line 55b. The breakable interval refers to the length at which the uncut portions between adjacent cutting lines are broken and the adjacent cutting lines are connected when the operator applies force. The same applies to the description below that it is breakable.

The pair of breaking parts 55e are constituted by a Y zipper with a plurality of cutting lines provided at breakable intervals. Each cutting line has a Y-shape in which one end located on the operating portion 55a side is bifurcated. The outermost end of the breaking portion 55e in the Y direction is located at a breakable distance from the bent portions 39A and 39B. The breakable interval as used herein means the length from the cutting line to the bending portions 39A, 39B at which the uncut portion is broken.

The breaking lines 56A, 56B are constituted by a plurality of cutting lines provided at breakable intervals. Referring to FIG. 2A, each cutting line has a single character shape and is provided on an extension of the folding lines 39A' and 39B'.

More specifically, one breaking line (second breaking line) 56A located on the upper flap 26A side is provided on the bending part 39A, and is connected to the front plate 21 from the intersection of the bending part 39A and the breaking line 55. It extends towards. A general-purpose ruled line 39a constituting the bent portion 39A extends toward the rear plate 22 from the intersection of the bent portion 39A and the breaking line 55, and no breaking line 56A is provided on this general-purpose ruled line 39a.

The other break line (fourth break line) 56B located on the upper flap 26B side is provided on the bending part 39B and extends toward the rear plate 22 from the intersection of the bending part 39B and the break line 55. The breaking lines 56A and 56B are located symmetrically with respect to the center of the top plate 20. The general-purpose ruled line 39a forming the bent portion 39B extends toward the front plate 21 from the intersection of the bent portion 39B and the break line 55. No break line 56B is provided on the general-purpose ruled line 39a.

Here, providing the break line 56A on the bent portion 39A is not limited to the provision of the breaking line 56A on the bent portion 39A in a geometrical sense, but also refers to a structure provided near the bent portion 39A (for example, within 5 mm). included. Also included is a configuration in which a plurality of cutting lines inclined with respect to the bent portion 39A are provided at intervals along the bent portion 39A. Further, the intersection of the bent portion 39A and the breaking line 55 is not limited to the actual intersection of the bent portion 39A and the breaking line 55, but includes the intersection of the bent portion 39A and an extension of the breaking line 55. . In this embodiment, the bent portion 39A and the breaking line 55 are located with a gap between them, so the latter is meant. Moreover, the configuration is not limited to the configuration in which the breaking line 56A or an extension of the breaking line 56A passes through the intersection, but may be configured to pass near the intersection. Note that the break line 56B is also similar to the break line 56A.

The breaking lines 57A and 57B are constituted by a Y zipper in which a plurality of cutting lines are provided at breakable intervals, and each extends in the Z direction. In each cutting line, one end side of the two bifurcated ends is arranged on the top plate 20 side. At the tips of the upper flaps 26A and 26B of this embodiment, cutout portions 26a are provided, respectively, which are cut out in the Z direction toward the top plate 20. Breaking lines 57A, 57B are provided for the upper flaps 26A, 26B from the intersection of the bending portions 39A, 39B and the breaking line 55 to the tip of the notch 26a (upper end in the Z direction). The break lines 57A and 57B are not limited to a configuration in which the break lines themselves or their extensions pass through the intersection, but may be configured as long as they pass near the intersection.

Here, the breaking line 55 of this embodiment is provided at an angle with respect to the top plate 20 as described above. Therefore, on the upper flap 26A side, the intersection of the breaking line 55 and the bent portion 39A is located closer to the front plate 21 than the center in the X direction, and on the upper flap 26B side, the intersection of the breaking line 55 and the bent portion 39B is located closer to the rear plate 22 than the center in the X direction. On the other hand, the notch portion 26a is provided at the center of each of the upper flaps 26A and 26B in the X direction. Therefore, the breaking line 57A on the upper flap 26A side is inclined toward the rear plate 22 from the bent portion 39A side toward the tip of the upper flap 26A. The breaking line 57B on the upper flap 26B side is inclined toward the front plate 21 side as it goes from the bent portion 39B side toward the tip of the upper flap 26B.

The slopes of the break lines 57A and 57B are set so that the break of the break line 56A is completed earlier than the break line 57A. More specifically, the inclination angle α of the breaking lines 57A, 57B with respect to the reference line extending perpendicularly to the bending portions 39A, 39B (bending line 39a) is set to 5 degrees or more and 50 degrees or less, and more preferably is set to 10 degrees or more and 30 degrees or less, and is set to 10 degrees in this embodiment. If the inclination angle α is made too small, there is a possibility that the breakage of the breakage line 57A will be completed earlier than the breakage line 56A. If the inclination angle α is excessively large, it becomes difficult to break the break line 57A itself. In order to prevent these inconveniences, the inclination angle α of the breaking lines 57A and 57B is set within the above-determined range.

As shown in FIGS. 1A and 1B, the sticking part (first sticking part) 51A that holds the lid part 23A in a sealed state is the front part of the upper flap 26A located on the front plate 21 side from the breaking line 57A. 26X and the front flap 24A located on the inner surface side of the upper flap 26A are attached. No adhesive portion is provided between the rear portion 26Y of the upper flap 26A located on the rear plate 22 side than the breaking line 57A and the rear flap 25A located on the inner surface side of the upper flap 26A. is in a non-adhered state.

The adhesive part (second adhesive part) 51B that holds the lid part 23B in a sealed state is attached to the rear part 26Y of the upper flap 26B located on the rear plate 22 side than the break line 57B, and the inner surface side of the upper flap 26B. The rear flap 25B located at the rear flap 25B is attached. No adhesive part is provided between the front part 26X of the upper flap 26B located on the front plate 21 side than the breaking line 57B and the upper flap 26B located on the inner surface side of the upper flap 26B. It is in a non-adhesive state.

The rear portion 26Y of the upper flap 26A, which is not attached to the rear flap 25A, is provided with a cutout portion 26b that continues to the notch portion 26a. The front portion 26X of the upper flap 26B, which is not attached to the front flap 24B, is provided with a cutout portion 26b that is connected to the notch portion 26a. Due to the cutout portion 26b, in the upper flap 26A, the protrusion dimension of the rear part 26Y is shorter than the protrusion dimension of the front part 26X, and in the upper flap 26B, the protrusion dimension of the front part 26X is shorter than the protrusion dimension of the rear part 26Y. . These cutout portions 26b ensure the adhesion area of the upper flaps 26A, 26B while preventing excessive cutting for forming the notch portion 26a.

As shown in FIGS. 1A and 3, the breaking line 58 is constituted by a plurality of cutting lines provided at breakable intervals, and is provided at the center of the front plate portion 29 in the Y direction. The break line 58 includes a first break section 58a located at an interval in the Z direction with respect to the tip of the front plate section 29, and a pair of first break sections 58a provided at both ends of the first break section 58a extending in the Z direction. 2 broken portions 58b. Adhesive is applied to the area (separation piece 29a) defined by the tip of the front plate part 29 and the break line 58, and the separation piece 29a and the front plate 21 are bonded together by the adhesion part (third adhesion part) 52A. It is pasted.

The breaking line 59 is constituted by a plurality of cutting lines provided at breakable intervals, and is provided at the center of the rear plate portion 30 in the Y direction. At the center of the rear plate portion 30 in the Y direction, a convex portion 30a is provided which projects upward in the Z direction so as to have a trapezoidal shape. The breaking line 59 extends in the Y direction along the bottom of the protrusion 30a. Adhesive is applied to the convex portion 30a, and the convex portion 30a and the rear plate 22 are adhered by an adhesive portion (fourth adhesive portion) 52B. Note that in the Z direction, the position of the bottom of the convex portion 30a is at the same height as the position of the tip (upper end) of the front plate portion 29.

Next, the operation of opening the packaging box 10 will be explained.

First, the top plate 20, the upper flaps 26A, 26B, and the front plate part 29 are broken along the breaking lines 55, 56a, 57a, 57b, and 58, and the first separation part 14 is separated. Subsequently, the top plate 20, the upper flap 26B, and the front plate part 29 are broken along the breaking lines 56b and 59, and the second separation part 15 is separated. Thereby, an unsealed state consisting of only the tray 12 inside the exterior member 11 can be achieved.

Specifically, in the state shown in FIG. 1A, the operating portion 55a is pushed in from the outside of the top plate 20. As a result, the top plate 20 is broken along the first breaking parts 55c and 55d, and the operation part 55a is opened. Next, grasp the opening edge of the front portion 20X of the top plate 20 and pull it upward. Thereby, the top plate 20 is divided into a front portion 20X and a rear portion 20Y along the breaking portion 55e.

Subsequently, the front portion 20X of the top plate 20 is pulled upward and toward the front plate 21 side. Thereby, the top plate 20 and the front portion 26X of the upper flap 26A are separated along the breaking line 56A. However, since the upper flap 26B located on the opposite side is not attached to the front flap 24B, the top plate 20 and the front portion 26X of the upper flap 26B are not separated.

Subsequently, the upper flaps 26A, 26B are separated into a front portion 26X and a rear portion 26Y along the breaking lines 57A, 57B. Here, after the top plate 20 and the upper flap 26A are broken along the break line 56A, the top flaps 26A and 26B can be broken along the break lines 57A and 57B only when the break lines 57A and 57B are determined. This is because it is tilted in the direction.

Specifically, the opening operation of the first separating section 14 is to pull the front portion 20X of the top plate 20 toward the front plate 21, and the force of the operation becomes less transmitted as the distance from the break line 55 increases. That is, at the break line 56A, the break progresses and becomes harder to break as it approaches the front plate 21. When the inclination of the breaking line 57A approaches the front plate 21 as it goes from the top plate 20 side to the bottom plate 27 side, and when the breaking line 57A extends in a direction perpendicular to the top plate 20 (parallel to the Z direction), The operating force is more easily transmitted to the tip side of the break line 57A than to the front plate 21 side of the break line 56A. Therefore, the breaking of the breaking line 57A may be completed earlier than the breaking line 56A, and the breaking of the breaking line 56A may be insufficient. In contrast, the breaking line 57A of this embodiment is inclined in a direction away from the front plate 21 as it goes from the top plate 20 side to the bottom plate 27 side, that is, in a direction opposite to the operating direction. Therefore, since the operating force is less likely to be transmitted to the tip side of the break line 57A than to the front plate 21 side of the break line 56A, breaking of the break line 56A can be completed earlier than the break line 57A.

As shown in FIG. 4A, when the breaking along the breaking lines 55, 56a, 57a, 57b is completed, the front flaps 24A, 24B are attached to the front plate 21 due to the stiffness of the corrugated cardboard sheet, as shown in FIG. 4B. unfolds flatly. Further, the front portion 26X of the upper flap 26B that is not attached to the front flap 24B is flattened against the front portion 20X of the top plate 20. Further, the rear portion 26Y of the upper flap 26A that is not attached to the rear flap 25A is flattened against the rear portion 20Y of the top plate 20.

When the broken state shown in FIG. 4B is reached, the front portion 20X of the top plate 20 is subsequently pulled toward the front plate 21 side. As a result, as shown in FIG. 5, the front plate part 29 stuck to the front plate 21 by the sticking part 52A is broken along the breaking line 58, and the first separating part 14 is separated from the other parts. .

Next, grasp the rear portion 20Y of the top plate 20 and pull it upward and toward the rear plate 22. Thereby, the top plate 20 and the rear portion 26Y of the upper flap 26B are separated along the breaking line 56B. As a result, the rear flaps 25A, 25B unfold flatly with respect to the rear plate 22 due to the stiffness of the corrugated cardboard sheet.

When the operation of the rear part 20Y of the top plate 20 is continued, as shown in FIG. Then, the second separating section 15 is separated from the tray 12. As a result, the exterior member 11 including a portion of the tray 12 is separated, resulting in an unsealed state in which the tray 12 is exposed as shown in FIG.

In the separated first separation section 14, the front plate 21, the front part 20X of the top plate 20, the pair of front flaps 24A, 24B, and the front part 26X of the upper flap 26B are in a flat unfolded state, and the front part 20X of the upper flap 26A is in a flat unfolded state. The portion 26X is attached to the front flap 24A in an overlapping manner. In the separated second separation section 15, the rear plate 22, the rear part 20Y of the top plate 20, the pair of rear flaps 25A, 25B, and the rear part 26Y of the upper flap 26A are in a flat unfolded state, and the upper flap 26B The rear flap 25B is superimposed on the rear portion 26Y. Since the separation parts 14 and 15 are both in a flat state, they do not become bulky even if they are discarded as they are.

By separating the first separation part 14, the front plate part 29 is broken along the breaking line 58, so that the separation piece 29a is separated from the front plate part 29, and the front plate part 29 has the shape of the separation piece 29a. A corresponding trapezoidal cutout is formed. This cutout increases the exposed area of the articles stored in the tray 12, so that a sales promotion effect can be obtained. On the other hand, in the rear plate part 30 of the tray 12, the convex part 30a is simply eliminated by the separation of the second separation part 15, and the contact area with the article is ensured. Therefore, the accommodation state of the articles in the tray 12 can be stabilized.

The packaging box 10 configured in this manner has the following features.

The packaging box 10 includes a break line 55 formed on the top plate 20, a break line 56A formed on the bent portion 39A, and 57A, 57B formed on the upper flaps 26A, 26B. Accordingly, by breaking the top plate 20 and the upper flap 26A along the break line 56A, the first separating portion 14 becomes in a state where the front portion 20X of the top plate 20 and the front flap 24A are flat with respect to the front plate 21. That is, since at least a portion of the first separating section 14 can be separated into a flat expanded state, it is possible to prevent the first separating section 14 from becoming bulky when discarding, and it is possible to improve the ease of disposal.

The front portion 26X of the upper flap 26B and the front flap 24B are in a non-adhesive state. Therefore, since the front portion 26X of the upper flap 26B is in a flat state with respect to the front portion 20X of the top plate 20, the ease of disposing of the first separating section 14 can be further improved.

Since a break line 56B is formed on the bending part 39B, by operating the rear part 20Y of the top plate 20, the top plate 20 and the rear part 26Y of the upper flap 26B are moved along the break line 56B. be divided. Therefore, since the rear portion 20Y of the top plate 20 can be made flat with respect to the rear plate 22, the ease of disposing of the second separating section 15 can be improved.

The rear portion 26Y of the upper flap 26A and the rear flap 25A are in a non-adhesive state. Therefore, since the rear portion 26Y of the upper flap 26A can be unfolded in a flat state with respect to the rear portion 20Y of the top plate 20, it is possible to further improve the ease of disposal of the second separating section 15.

The break lines 55, 56A, 56B, 57A, 57B and the attached parts 51A, 51B are point symmetrical, so that the exterior member 11 can be separated into a pair of separation parts 14, 15. Therefore, even if the unsealing operation is performed from the rear plate 22 side of this embodiment, the unsealing can be performed in the same manner as described above. In other words, in the opening operation, there is no need to specify the opening order, so that the efficiency of the opening operation can be improved.

The breaking line 57A formed on the upper flap 26A is inclined in a direction opposite to the direction in which the first separating section 14 is operated during the opening operation. Thereby, by operating the front portion 20X of the top plate 20, the top plate 20 and the upper flap 26A can be broken along the break line 56A, and then the top flaps 26A and 26B can be reliably broken along the break lines 57A and 57B. . In other words, since the upper flaps 26A and 26B are broken first along the break lines 57A and 57B, the break along the break line 56A is insufficient, and the top plate 20 and the top flap 26A are maintained in a connected state. You can prevent this from happening.

The break lines 57A, 57B are provided from the intersections of the bends 39A, 39B and the break line 55 to the notch 26a. Therefore, the break dimensions of the upper flaps 26A, 26B due to the break lines 57A, 57B can be shortened, so that the ease of opening the packaging box 10 can be further improved.

The packaging box 10 is composed of a tray 12 having a bottom plate 27 and an exterior member 11 that covers the tray 12. The front plate 21 of the exterior member 11 is attached to the front plate part 29 of the tray 12, and the rear plate of the tray 12 The rear plate 22 of the exterior member 11 is attached to the portion 30. The regions including these adhesive parts 52A and 52B can be separated by breaking lines 58 and 59. Therefore, by operating the front portion 20X of the top plate 20, the first separating portion 14, which is a half area of the exterior member 11, can be reliably separated from the tray 12. Further, by operating the rear portion 20Y of the top plate 20, the second separating portion 15, which is the remaining half area of the exterior member 11, can be reliably separated from the tray 12. Further, the individual separating portions 14 and 15 can be reliably separated in a flat state.

(Second embodiment)
7 to 10 show a packaging box 10 of a second embodiment. As shown in FIG. 7, this packaging box 10 is largely different from the packaging box 10 of the first embodiment in that it is composed of one blank. Furthermore, the packaging box 10 of the second embodiment differs from the packaging box 10 of the first embodiment in that the area of the second separating section 15, which is the rear side portion, is reduced. Note that the same components as in the first embodiment are given the same reference numerals.

As shown in FIG. 8, the packaging box 10 includes a top plate 20, a front plate 21, a rear plate 22, a pair of left and right lids 23A and 23B, and a bottom plate 27, as in the first embodiment. Both lid portions 23A, 23B include front flaps 24A, 24B, rear flaps 25A, 25B, and upper flaps 26A, 26B, similarly to the first embodiment.

The bottom plate 27 has the same rectangular shape as the top plate 20, is connected to the end of the rear plate 22 opposite to the top plate 20 in the Z direction via a bent part 65, and extends along the same XY plane as the top plate 20. It has been extended. Referring to FIG. 7, the folding line 65' forming the folding portion 65 is composed of general-purpose ruled lines.

Referring to FIGS. 7 and 8 , a front plate portion 29 disposed on the inner surface side of the front plate 21 is connected to the bottom plate 27 via a bent portion 40 . This front plate part 29 has the same configuration as the first embodiment, and is attached to the front plate 21 via an adhesive part 52A. That is, the bottom plate 27 is directly connected to the rear plate 22 and connected to the front plate 21 via the front plate portion 29.

Referring also to FIG. 9, a pair of lower flaps (second portions) 67A and 67B are provided in series on the bottom plate 27, and attached portions 70 are provided in series in each of these lower flaps 67A and 67B. .

The lower flaps 67A, 67B are generally in the shape of a right-angled trapezoid, are connected to both ends of the bottom plate 27 in the Y direction via bent portions 68, are arranged on the inner surfaces of the pair of lid portions 23A, 23B, and are arranged in an overlapping manner on the inner surfaces of the pair of lid portions 23A, 23B. Extends along a plane. Referring to FIG. 7, the folding line 68' forming the folding portion 68 is composed of general-purpose ruled lines.

The attachment portions 70 are connected to the ends of the lower flaps 67A and 67B on the front plate portion 29 side via the bent portions 71, are arranged to overlap on the inner surface side of the front plate portion 29, and extend along the YZ plane. are doing. The attachment portion 70 is provided with a cutout portion 70a having a shape corresponding to the shape of the break line 58. Referring to FIG. 7, the folding line 71' forming the folding portion 71 is composed of general-purpose ruled lines.

Continuing to refer to FIGS. 7 and 8, the top plate 20 is provided with a break line 55, and the top plate 20 and the upper flaps 26A, 26B are provided with break lines 56A, 56B. are provided with break lines 57A and 57B, respectively, and a break line 58 is provided in the front plate portion 29. These configurations are similar to those in the first embodiment. Furthermore, in the packaging box 10 of the second embodiment, a break line 73 is provided between the top plate 20 and the rear plate 22 instead of the break line 59 shown in FIGS. 1A and 1B.

The breaking line 73 is formed on the bent portion 36 that is one end of the rear plate 22 in the Z direction, and is provided to separate the top plate 20 from the rear plate 22. The term "on the bending part 36" is not limited to being on the bending part 36 in a geometrical sense, but includes a configuration provided near the bending part 36 (for example, within 5 mm) on the rear plate 22. The breaking line 73 is composed of a plurality of cutting lines provided at breakable intervals. Referring to FIG. 7, a folding line 36' composed of a general-purpose ruled line and a plurality of cutting lines is a so-called lead ruled line.

Referring to FIGS. 8 and 9, the attachment portion 70 connected to the lower flaps 67A, 67B is attached to the inner surface of the front plate portion 29 by the attachment portion 50. Further, the front portion 26X of the upper flap 26A is attached to the outer surface of the front flap 24A by an attachment portion 51A. The rear portion 26Y of the upper flap 26B is attached to the outer surface of the rear flap 25B by an attachment portion 51B. Further, the separation piece 29a of the front plate portion 29 is adhered to the inner surface of the front plate 21 by an adhesive portion 52A. These configurations are similar to those in the first embodiment.

In the packaging box 10 of the second embodiment, lower flaps 67A, 67B are attached to the inner surfaces of the rear flaps 25A, 25B by an adhesive part 75 instead of the adhesive part 52B shown in FIG. 1B. The lower flap 67A and the front flap 24A, and the lower flap 67B and the front flap 24B are not attached (non-attached state).

When opening the packaging box 10 of the second embodiment, the first separating section 14 is separated as shown in FIG. 9 by the same operation as the packaging box 10 of the first embodiment.

On the rear side of the packaging box 10, the rear portion 20Y of the top plate 20 is grasped and pulled upward and toward the rear plate 22. Thereby, the top plate 20 and the rear portion 26Y of the upper flap 26B are separated along the breaking line 56B. Thereafter, by breaking between the top plate 20 and the rear plate 22 along the breaking line 73, the second separating portion 15 is separated as shown in FIG. As a result, the front half of the packaging box 10 is separated into an open state.

The separated first separating section 14 is in a flat unfolded state as in the first embodiment. In the second separating section 15, the rear portion 26Y of the upper flap 26A is unfolded flat with respect to the rear portion 20Y of the top plate 20. The rear portion 26Y of the upper flap 26B is attached to the rear flap 25B.

In this way, in the packaging box 10 of the second embodiment, the separated separation parts 14 and 15 are both in a flat state, so that even if they are disposed of as they are, they do not become bulky. Therefore, the same functions and effects as in the first embodiment can be obtained. Moreover, in the unsealed state, the rear plate 22 and rear flaps 25A, 25B stand up on the rear side of the tray-shaped lower part like a backrest. Therefore, it is possible to stabilize the accommodation state of the articles in this unfolded state, and by printing on the rear plate 22, a sales promotion effect can be obtained.

(Third embodiment)
11 to 14 show a packaging box 10 of a third embodiment. 12 to 14 show the second embodiment viewed from the opposite side in the X direction from FIGS. 8 to 10. As shown most clearly in FIG. 11, this packaging box 10 differs from the packaging box 10 of the second embodiment in that the position of the break line (sixth break line) 73 has been changed. Note that the same components as in the second embodiment are given the same reference numerals.

As shown in FIGS. 11 and 12, the breaking line 73 is provided in the upper region of the rear plate 22 (the top part divided into three parts in the Z direction), and the breaking line 73 is provided in the upper region of the rear plate 22 (the uppermost part divided into three parts in the Z direction), ) and the remaining part (lower part 22Y). In other words, the breaking line 73 is provided so as to be located within a predetermined distance (for example, 70 mm) from the bent portion 36.

More specifically, the breaking line 73 is composed of a plurality of cutting lines provided at breakable intervals, and is provided from one of the pair of rear flaps 25A, 25B to the other through the rear plate 22. It is being That is, as shown most clearly in FIG. 14, the breaking line 73 is formed in the first portion 73a formed on the rear plate 22, the second portion 73b formed on the rear flap 25A, and the rear flap 25B. and a third portion 73c.

The first portion 73a extends from one end of the rear plate 22 in the Y direction to the other end, and has an arcuate shape that projects from the top plate 20 side toward the bottom plate 27 side as a whole. The second portion 73b and the third portion 73c are provided at a position covered by the upper flaps 26A, 26B at the lower part (bottom plate 27 side) of the adhesive portion 51B, and extend along the X direction.

Referring to FIG. 11, the rear flap 25B of this embodiment is provided with a notch 78 cut out toward the third portion 73c on the edge facing the front flap 24B. This notch 78 is the starting point of the break along the break line 73. That is, the rear flap 25B, the rear plate 22, and the rear flap 25A are broken along the breaking line 73 in this order.

When opening the packaging box 10 of the third embodiment, the first separating section 14 is separated as shown in FIG. 13 by the same operation as the packaging box 10 of the first embodiment.

On the rear side of the packaging box 10, the rear portion 20Y of the top plate 20 is grasped and pulled upward and toward the rear plate 22. Thereby, the top plate 20 and the rear portion 26Y of the upper flap 26B are separated along the breaking line 56B. Thereafter, by breaking the rear flaps 25A, 25B and the rear plate 22 along the breaking line 73, the second separating portion 15 is separated as shown in FIG. As a result, the front half and part of the rear portion of the packaging box 10 are separated into an unsealed state.

The separated first separating section 14 is in a flat unfolded state as in the first embodiment. In the second separation part 15, the upper part 22X of the rear plate 22 and the rear part 26Y of the upper flap 26A are in a flat unfolded state with respect to the rear part 20Y of the top plate 20. Further, the upper portions 25X of the rear flaps 25A and 25B are each in a flat unfolded state relative to the upper portion 22X of the rear plate 22. Therefore, even if these separation parts 14 and 15 are discarded as they are, they do not become bulky.

Moreover, in the unsealed state, the lower portion 22Y of the rear plate 22 and the lower portions 25Y of the rear flaps 25A, 25B stand up on the rear side of the tray-shaped lower part. Therefore, it is possible to stabilize the accommodation state of the articles in this unfolded state, and by printing on the rear plate 22, a sales promotion effect can be obtained. Furthermore, compared to the packaging box 10 of the second embodiment, the total height of the rear plate 22 and rear flaps 25A, 25B is lower, which is effective when placed on a product shelf.

(Fourth embodiment)
15 to 18 show a packaging box 10 of a fourth embodiment. As shown in FIGS. 16 and 18, this packaging box 10 has different dimensions in the X direction, Y direction, and Z direction, and is opened in the form of a tray with only the upper side separated without separating the lower side. This embodiment is different from the second embodiment in that it is configured as follows.

As shown in FIG. 16, the packaging box 10 includes a top plate 20, a front plate 21, a rear plate 22, a pair of left and right lids 23A and 23B, and a bottom plate 27, as in the first embodiment. Among them, the bottom plate 27 is connected to the ends of the front plate 21 and the rear plate 22 on the side opposite to the top plate 20 in the Z direction, and extends along the XY plane so as to face the top plate 20.

Referring to FIG. 15, the top plate 20, the front plate 21, the bottom plate 27, and the rear plate 22 are connected in this order from top to bottom. An attachment part 80 for adhering to the inner surface side of the top plate 20 located at the upper end is connected to the rear plate 22 located at the lower end via a folding line 81' forming a folding part 81. There is. The attachment portion 80 and the top plate 20 are attached by an attachment portion 82.

Referring to FIGS. 15 and 16, the lids 23A, 23B each include front flaps 24A, 24B, rear flaps 25A, 25B, and upper flaps 26A, 26B. Further, in this embodiment, lower flaps (fifth flaps) 67A, 67B connected to the bottom plate 27 are attached to the outer surfaces of the front flaps 24A, 24B and the outer surfaces of the rear flaps 25A, 25B, respectively. 23A and 23B.

The upper flap 26A and the lower flap 67A, and the upper flap 26B and the lower flap 67B are formed with dimensions such that their tips abut each other. On the other hand, the front flap 24A and the rear flap 25A, and the front flap 24B and the rear flap 25B are formed with dimensions such that their tips are spaced apart from each other.

Continuing to refer to FIGS. 15 and 16, the top plate 20 is provided with a break line 55, and the top plate 20 and the upper flaps 26A, 26B are provided with break lines 56A, 56B. are provided with break lines 57A and 57B, respectively. These configurations are similar to those in the first embodiment. Moreover, the packaging box 10 of the fourth embodiment is provided with a break line 85 (fifth break line) for breaking the front plate 21 instead of the break line 58 shown in FIGS. 1A and 1B. Further, similarly to the third embodiment, a break line (sixth break line) 73 for breaking the rear plate 22 is provided.

Referring to FIGS. 15 and 17, the breaking line 85 is provided in the middle region of the front plate 21 in the Z direction (in the middle of dividing the front plate 21 into three equal parts in the Z direction). 21X) and the remaining part (lower part 21Y).

More specifically, the breaking line 85 is constituted by a plurality of cutting lines provided at breakable intervals, and is provided from one of the pair of front flaps 24A, 24B to the other through the front plate 21. It is being That is, the breaking line 85 includes a first portion 85a formed on the front plate 21, a second portion 85b formed on the front flap 24A, and a third portion 85c formed on the front flap 24B.

The first portion 85a extends from one end of the front plate 21 in the Y direction to the other end, and has an arcuate shape that projects from the top plate 20 side toward the bottom plate 27 side as a whole. The second portion 85b and the third portion 85c are provided at a position covered by the upper flaps 26A and 26B at the lower part (bottom plate 27 side) of the adhesive portion 51A, and extend along the X direction.

Referring to FIGS. 15 and 18, the break line 73 is provided on the rear plate 22 so as to be located at the same height as the break line 85 in the Z direction. Similar to the third embodiment, this breaking line 73 includes a first portion 73a formed on the rear plate 22, a second portion 73b formed on the front flap 24A, and a third portion formed on the front flap 24B. 73c.

Referring to FIGS. 15 and 17, the front flap 24A is provided with a notch 78A cut out toward the first portion 85a on the edge facing the rear flap 25A. The rear flap 25B is provided with a notch 78B cut out toward the third portion 73c on the edge facing the front flap 24B. These notches 78A and 78B are the starting points of the fracture along the fracture lines 85 and 73. That is, on the front side, the front flap 24A, the front plate 21, and the front flap 24B are torn in this order along the breaking line 85. On the rear side, the rear flap 25B, the rear plate 22, and the rear flap 25A are fractured along the fracture line 73 in this order.

As shown in FIGS. 15 and 16, the tips of the upper flaps 26A and 26B have notches 26a cut out in the Z direction toward the breaking lines 57A and 57B (top plate 20), as in the first embodiment. are provided for each. The notch 26a is formed into a trapezoidal shape whose dimension in the X direction is approximately the same as the width of the operator's hand, and also functions as a handle hole in the sealed state.

Referring to FIGS. 16 and 17, the top plate 20 and the attachment section 80 are attached by an attachment section 82. As shown in FIG. The front portion 26X of the upper flap 26A is attached to the outer surface of the front flap 24A by an attachment portion 51A. The rear portion 26Y of the upper flap 26B is attached to the outer surface of the rear flap 25B by an attachment portion 51B. The lower flaps 67A, 67B are attached to the outer surfaces of the front flaps 24A, 24B and the rear flaps 25A, 25B by attachment portions 75, respectively.

When opening the packaging box 10 of the fourth embodiment, the operating portion 55a is pushed in from the outside of the top plate 20, and the opening edge of the front portion 20X of the top plate 20 is grasped and pulled upward. Thereby, the top plate 20 is divided into a front portion 20X and a rear portion 20Y along the breaking portion 55e. Subsequently, by pulling the front portion 20X of the top plate 20 upward and toward the front plate 21 side, the top plate 20 and the front portion 26X of the upper flap 26A are separated along the breaking line 56A.

By continuing to operate the front portion 20X of the top plate 20, the upper flaps 26A, 26B are separated into a front portion 26X and a rear portion 26Y along the break lines 57A, 57B. At this time, the front flap 24A is divided into an upper portion 24X and a lower portion 24Y along the second portion 85b of the break line 85, starting from the notch 78A. Note that the front flap 24B may also be divided into an upper portion 24X and a lower portion 24Y along the third portion 85c of the breaking line 85.

Next, the front plate 21 is pulled in the Y direction from the front flap 24A side to the front flap 24B side. Thereby, the front plate 21 and the front flaps 24A, 24B are broken along the breaking line 85. As a result, as shown in FIG. 17, it consists of a front part 20X of the top plate 20, an upper part 21X of the front plate 21, a front part 26X of each of the upper flaps 26A and 26B, and an upper part 24X of each of the front flaps 24A and 24B. The first separating section 14 is separated from the other parts.

Next, grasp the rear portion 20Y of the top plate 20 and pull it upward and toward the rear plate 22. Thereby, the top plate 20 and the rear portion 26Y of the upper flap 26B are separated along the breaking line 56B. At this time, the rear flap 25B is divided into an upper portion 25X and a lower portion 25Y along the third portion 73c of the breaking line 73, starting from the notch 78B. Note that the rear flap 25A may also be divided into an upper portion 25X and a lower portion 25Y along the second portion 73b of the breaking line 73.

Subsequently, the rear plate 22 is pulled in the Y direction from the rear flap 25B side to the rear flap 25A side. Thereby, the rear plate 22 and the rear flaps 25A, 25B are fractured along the fracture line 73. As a result, as shown in FIG. 18, a rear portion 20Y of the top plate 20, an upper portion 22X of the rear plate 22, a rear portion 26Y of each of the upper flaps 26A and 26B, and an upper portion 25X of each of the rear flaps 25A and 25B. A second separating section 15 consisting of the following is separated from the other parts.

As shown in FIGS. 17 and 18, the separation parts 14 and 15 are both in a flat unfolded state, so even if they are disposed of as they are, they do not become bulky. Therefore, it is possible to improve the ease of disposing of the separation parts 14 and 15 that are no longer needed after opening the package. Further, since the packaging box 10 has a tray shape with only the lower portion extending from the break lines 85 and 73, it is possible to improve the ease of taking out the articles and to stabilize the state in which the articles are stored.

Note that the packaging box 10 of the present invention is not limited to the configuration of the embodiment described above, and various changes can be made.

For example, the front portion 26X of the upper flap 26B and the front flap 24B may be attached by an attachment part. Even in this case, since a part of the first separation part 14 on the upper flap 26A side is in a flat state, it is possible to improve the ease of disposal compared to the case where both parts are not flat.

The rear side (second separating section 15) of the packaging box 10 may not be separated without providing the breaking line 56B. In other words, only the first separating section 14 may be separable. Of course, the rear portion 26Y of the upper flap 26A and the rear flap 25A may be attached using an attachment section.

The breaking line 55 may include only the breaking portion 55e without providing the operating portion 55a. Furthermore, the breaking portion 55e is not limited to the Y zipper, but may be a single zipper in which an inclined second cutting line is provided at one end of the first cutting line in the shape of a letter, or a plurality of cutting lines forming the letter shape. It may also be configured in a perforation shape. Of course, the configurations of the break lines 55A, 56A, and 56B can also be changed as necessary.

The cutout portion 26a may not be provided in the upper flaps 26A, 26B. It is not necessary to provide the cutout portion 26b in the upper flaps 26A, 26B.

The packaging box 10 is not limited to the shape of a rectangular parallelepiped, and may have an inclined chamfered plate between the top plate 20 and the upper flaps 26A, 26B, between the top plate 20 and the front plate, between the top plate 20 and the rear plate 22, etc. Often, the configuration can be modified as needed.

The material of the packaging box 10 is not limited to a cardboard sheet made of paper, but may be a cardboard sheet made of resin. Moreover, the material of the packaging box 10 is not limited to a corrugated sheet, but may be a single layer of cardboard or a resin sheet.

10... Packaging box 11... Exterior member 12... Tray 14... First separating section 15... Second separating section 20... Top plate 20X... Front part (first part)
20Y...Rear part (second part)
21...Front plate (first side plate)
21X...Upper part 21Y...Lower part 22...Rear plate (second side plate)
22X... Upper part 22Y... Lower part 23A, 23B... Lid part 24A, 24B... Front flap (first flap)
24X...Upper part 24Y...Lower part 25A, 25B...Back flap (second flap)
25X...Upper part 25Y...Lower part 26A...Upper flap (third flap)
26B...Upper flap (4th flap)
26a... Notch part 26b... Cutout part 26X... Front part (first part)
26Y...Rear part (second part)
27...Bottom plate 28...Outer peripheral wall 29...Front plate part (first part)
29a... Separation piece 30... Rear plate part (second part)
30a...Convex part 31A, 31B...Side plate part 32...Folding part 35...Bending part 35'...Folding line 36...Bending part 36'...Folding line 37...Bending part 37'...Folding line 38...Bending part 38'...Bending line 39A...Bending part (first side)
39B...Bending part (second side)
39A', 39B'...Folding line 39a...General ruled line 40...Folding part 40'...Folding line 41...Folding part 41'...Folding line 42A, 42B...Folding part 42A', 42B'...Folding line 43...Folding Curved part 43'...Folding line 50...Passing part 51A...Passing part (first sticking part)
51B... pasting part (second pasting part)
52A... pasting part (third pasting part)
52B... pasting part (fourth pasting part)
55...Break line (first break line)
55a...Operation part 55b...Bending line 55c...First breaking part 55d...Second breaking part 55e... Breaking part 56A... Breaking line (second breaking line)
56B...Break line (4th break line)
57A, 57B...Break line (third break line)
58...Break line (fifth break line)
58a...First breaking part 58b...Second breaking part 59... Breaking line (sixth breaking line)
65...Bending portion 65'...Folding line 67A, 67B...Lower flap (second portion, fifth flap)
68...Folding line 68'...Folding line 70...Additional portion 70a...Notch part 71...Folding line 71'...Folding line 73...Break line (sixth break line)
73a...First part 73b...Second part 73c...Third part 75...Adhering part (fourth adhering part)
78, 78A, 78B...Notch part 80...Folding part 81...Folding line 81'...Folding line 82...Passing part 85...Break line (fifth break line)
85a...First part 85b...Second part 85c...Third part

Claims (10)

a top plate extending in a first direction and a second direction intersecting the first direction;
a first side plate connected to one end of the top plate in the first direction and extending in a third direction intersecting the first direction and the second direction and in the second direction;
a second side plate that is continuous with the other end of the top plate in the first direction and faces the first side plate;
a pair of first flaps that are connected to both ends of the first side plate in the second direction and extend in the first direction and the third direction toward the second side plate;
a pair of second flaps that are connected to both ends of the second side plate in the second direction and extend toward the first side plate;
continuous with a first side that is one end of the top plate in the second direction, and arranged on the outer surface side of one of the pair of first flaps and on the outer surface side of one of the pair of second flaps. a third flap;
connected to a second side that is the other end of the top plate in the second direction, and arranged on the outer surface side of the other one of the pair of first flaps and on the outer surface side of the other one of the pair of second flaps. a fourth flap;
a first breaking line provided on the top plate and extending in the second direction from the first side to the second side;
a second break line provided on the first side and extending from the intersection of the first side and the first break line toward the first side plate;
A pair of flaps provided on each of the third flap and the fourth flap and extending in the third direction from the intersection of the first side and the first break line and the intersection of the second side and the first break line, respectively. 3 broken lines and
a first adhesion portion to which a portion of the third flap closer to the first side plate than the third break line and the first flap located on the inner surface side of the third flap are attached ;
A packaging box , wherein a portion of the fourth flap closer to the first side plate than the third break line and the first flap located on the inner surface side of the fourth flap are in a non-adhered state . a fourth break line provided on the second side and extending from the intersection of the second side and the first break line toward the second side plate;
A second adhesion portion that adheres a portion of the fourth flap closer to the second side plate than the third break line and the second flap located on the inner surface side of the fourth flap. The packaging box described in item 1 . a top plate extending in a first direction and a second direction intersecting the first direction;
a first side plate connected to one end of the top plate in the first direction and extending in a third direction intersecting the first direction and the second direction and in the second direction;
a second side plate that is continuous with the other end of the top plate in the first direction and faces the first side plate;
a pair of first flaps that are connected to both ends of the first side plate in the second direction and extend in the first direction and the third direction toward the second side plate;
a pair of second flaps that are connected to both ends of the second side plate in the second direction and extend toward the first side plate;
continuous with a first side that is one end of the top plate in the second direction, and arranged on the outer surface side of one of the pair of first flaps and on the outer surface side of one of the pair of second flaps. a third flap;
connected to a second side that is the other end of the top plate in the second direction, and arranged on the outer surface side of the other one of the pair of first flaps and on the outer surface side of the other one of the pair of second flaps. a fourth flap;
a first breaking line provided on the top plate and extending in the second direction from the first side to the second side;
a second break line provided on the first side and extending from the intersection of the first side and the first break line toward the first side plate;
A pair of flaps provided on each of the third flap and the fourth flap and extending in the third direction from the intersection of the first side and the first break line and the intersection of the second side and the first break line, respectively. 3 broken lines and
a first adhering portion in which a portion of the third flap closer to the first side plate than the third break line and the first flap located on the inner surface side of the third flap are adhered;
and furthermore,
a fourth break line provided on the second side and extending from the intersection of the second side and the first break line toward the second side plate;
a second adhesion portion that adheres a portion of the fourth flap closer to the second side plate than the third break line and the second flap located on the inner surface side of the fourth flap;
A packaging box with. Claim 2 or 3, wherein a portion of the third flap closer to the second side plate than the third break line and the second flap located on the inner surface side of the third flap are in a non-adhesive state. The packaging box described in. Any one of claims 1 to 4, wherein the third break line formed on the third flap is inclined toward the second side plate as it goes from the first side toward the tip of the third flap. Packaging boxes listed in section. A notch cut out toward the top plate is provided at the tip of the third flap and the tip of the fourth flap, respectively,
The packaging box according to any one of claims 1 to 5, wherein the third breaking line is provided from the intersection to the notch. an exterior member comprising the top plate, the first side plate, the second side plate, the pair of first flaps, the pair of second flaps, the third flap, and the fourth flap;
It has a bottom plate facing the top plate, and an outer peripheral wall that stands up from the outer periphery of the bottom plate and is arranged on the inner side of the first side plate, the second side plate, the first flap, and the second flap. and a tray separate from the exterior member;
a third adhesion portion that adheres a first portion of the outer peripheral wall located on the inner surface side of the first side plate and the first side plate;
a fourth adhesion portion that adheres a second portion of the outer peripheral wall located on the inner surface side of the second side plate and the second side plate;
a fifth break line formed in the first portion and for separating a region including the third adhesive part;
The packaging box according to any one of claims 1 to 6, further comprising: a sixth break line formed in the second portion to separate a region including the fourth adhesive portion. a top plate extending in a first direction and a second direction intersecting the first direction;
a first side plate connected to one end of the top plate in the first direction and extending in a third direction intersecting the first direction and the second direction and in the second direction;
a second side plate that is continuous with the other end of the top plate in the first direction and faces the first side plate;
a pair of first flaps that are connected to both ends of the first side plate in the second direction and extend in the first direction and the third direction toward the second side plate;
a pair of second flaps that are connected to both ends of the second side plate in the second direction and extend toward the first side plate;
continuous with a first side that is one end of the top plate in the second direction, and arranged on the outer surface side of one of the pair of first flaps and on the outer surface side of one of the pair of second flaps. a third flap;
connected to a second side that is the other end of the top plate in the second direction, and arranged on the outer surface side of the other one of the pair of first flaps and on the outer surface side of the other one of the pair of second flaps. a fourth flap;
a first breaking line provided on the top plate and extending in the second direction from the first side to the second side;
a second break line provided on the first side and extending from the intersection of the first side and the first break line toward the first side plate;
A pair of flaps provided on each of the third flap and the fourth flap and extending in the third direction from the intersection of the first side and the first break line and the intersection of the second side and the first break line, respectively. 3 broken lines and
a first adhering portion in which a portion of the third flap closer to the first side plate than the third break line and the first flap located on the inner surface side of the third flap are adhered;
and furthermore,
an exterior member comprising the top plate, the first side plate, the second side plate, the pair of first flaps, the pair of second flaps, the third flap, and the fourth flap;
It has a bottom plate facing the top plate, and an outer peripheral wall that stands up from the outer periphery of the bottom plate and is arranged on the inner side of the first side plate, the second side plate, the first flap, and the second flap. and a tray separate from the exterior member;
a third adhesion portion that adheres a first portion of the outer peripheral wall located on the inner surface side of the first side plate and the first side plate;
a fourth adhesion portion that adheres a second portion of the outer peripheral wall located on the inner surface side of the second side plate and the second side plate;
a fifth break line formed in the first portion and for separating a region including the third adhesive part;
a sixth break line formed in the second portion and separating a region including the fourth adhesive part;
A packaging box with. a bottom plate that extends to an end of the second side plate opposite to the top plate in the third direction and faces the top plate;
a first portion connected to an end of the bottom plate on the first side plate side in the first direction and disposed on the inner surface side of the first side plate;
a pair of second portions connected to both ends of the bottom plate in the second direction and arranged on the inner surface side of the first flap and the inner surface side of the second flap;
a third adhesion part to which the first part and the first side plate are attached;
a fourth sticking part to which the second part and the second flap are respectively stuck;
a fifth break line formed in the first portion and for separating a region including the third adhesive part;
The packaging box according to any one of claims 1 to 6, further comprising a sixth break line formed on at least the second side plate and for separating the top plate side. a bottom plate that is connected to ends of the first side plate and the second side plate opposite to the top plate in the third direction and faces the top plate;
a pair of fifth flaps connected to both ends of the bottom plate in the second direction, arranged on the outer surface side of the first flap and on the outer surface side of the second flap, and attached thereto;
a fifth break line provided from one of the pair of first flaps to the other and extending in the second direction on the first side plate;
The packaging box according to any one of claims 1 to 6, further comprising: a sixth break line provided from one to the other of the pair of second flaps and extending in the second direction on the second side plate. .

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