JP2018188151A - Packing box and blank sheet - Google Patents

Abstract

An object of the present invention is to provide a packaging box and a blank sheet that can improve operability when opening the packaging box. A top plate (16) has first perforations extending from a front edge (16F) of the top plate (16) toward an upper edge (13U) of a rear wall (13), and a region surrounded by the first perforations in the top plate (16) is an opening. A first opening portion 161 for opening 11T. The front flap 17 is provided with a pair of left and right flap ends 17E and a flap intermediate portion 17C which is a portion sandwiched between the pair of flap ends 17E and joined to the outer surface of the front wall 12. Each flap end 17E and the flap intermediate portion 17C is a folding line 17L, and the boundary between each flap end portion 17E and the top plate 16 is a second perforation that connects the left and right ends of the front flap 17 to the separate front ends of the first perforation. It is 16FE. [Selection drawing] Fig. 1

Description

  The present invention relates to a packaging box and a blank sheet.

  A cardboard wrap round box, which is an example of a packaging box, includes a bottom plate, front and rear side walls connected to the bottom plate, left and right side walls connected to the bottom plate, and a top plate connected to the upper edge of the rear wall. And a front flap connected to the front edge of the top plate. The left and right ends of the front flap and the outer surface of the front wall are joined to each other, whereby the packaging box is sealed. On the other hand, the front flap is provided with a perforation at the boundary between the left and right ends and the central part, the top plate is provided with left and right perforations connected to the front flap perforation, and each perforation is cut off The packaging box is opened (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2015-040056

By the way, when opening the packaging box described above, first, the central portion of the front flap is held by the user's finger or the like and the perforation of the front flap is cut, so that the central portion of the front flap is the front flap. Is pulled up against the left and right ends of And the central part of a front flap and a part of top board are pulled up so that the perforation of a top board may be cut | disconnected in the state which the center part of the front flap was pinched with a user's finger | toe etc. At this time, since the range that can be picked by the user is limited only to the center portion of the front flap, it is difficult to apply an external force to cut the perforation of the top plate that is distributed to the left and right. ing.
An object of this invention is to provide the packaging box which made it possible to improve the operativity at the time of opening a packaging box, and a blank sheet.

  A packaging box for solving the above-mentioned problems is a packaging box, and includes a bottom plate, front and rear side walls surrounding the bottom plate with an upper edge that defines an opening facing the bottom plate, and one side wall. A top plate that is connected to the upper edge of the rear wall and covers the opening; and a front flap that is connected to the front edge of the top plate and joined to the outer surface of the front wall. The top plate is provided with a first perforation extending from a pair of left and right front ends located at a front edge of the top plate toward an upper edge of the rear wall, and a region surrounded by the first perforation in the top plate is provided. The first flap for providing the opening, and the front flap includes a pair of flap end portions on the left and right sides and a flap intermediate portion which is the joined portion sandwiched between the pair of flap end portions. Prepare. The boundary between each flap end and the flap intermediate portion is a fold line extending downward from each front end of the first perforation, and the front edge of the top plate has left and right ends of the front edge. A pair of second perforations are provided on the left and right connecting to separate front ends of the first perforation.

  A blank sheet for solving the above problems includes a bottom plate, upper and lower side walls that surround the bottom plate with an upper edge that defines an opening facing the bottom plate, and an upper edge of the rear wall that is the one side wall. It is a blank sheet used for manufacture of a packaging box provided with a top plate which is provided continuously and covers the opening, and a front flap which is provided continuously with the front edge of the top plate and joined to the outer surface of the front wall. The front flap, the top plate, the rear wall, the bottom plate, and the front wall are arranged in this order, and the top plate is located on the front edge of the top plate on the left and right sides from the pair of front ends. A first perforation extending toward the upper edge of the top plate, and a region surrounded by the first perforation in the top plate is a first opening for providing the opening, and the front flap is on the left and right A pair of flap end portions and a flap intermediate portion which is the joined portion sandwiched between the pair of flap end portions. The boundary between each flap end and the flap intermediate portion is a fold line extending downward from each front end of the first perforation, and the front edge of the top plate has left and right ends of the front edge. A pair of second perforations are provided on the left and right connecting to separate front ends of the first perforation.

  According to the packaging box and the blank sheet, at the time of opening the packaging box, first, a pair of flap end portions are picked by a user's finger or the like, and the second is the boundary between each flap end portion and the top plate. The perforation is cut. Next, the front flap is folded at a fold line that is a boundary between each flap end and the flap intermediate portion with each flap end being picked by a finger or the like. Then, the front flap is pulled up from the front wall so that the joint between the flap intermediate portion and the front wall is released with each flap end portion being picked by a finger or the like, and then the first perforation of the top plate Is cut from front to back. As a result, the range that can be picked by the user is the both ends of the front flap, so that the external force for cutting the first perforation of the top plate that is distributed to the left and right is separately suitable. You can set the direction and size. Therefore, the operability when opening the packaging box can be improved.

  The packaging box may further include outer flaps that are separately provided on the left and right edges of the top plate to form left and right side walls, and the first perforation extends from each front end of the top plate to the left and right edges. A first opening line extending with an inclination with respect to the left and right edges to a rear end located in the middle, and extending from the rear end of the first opening line toward the upper edge of the rear wall to constitute the left and right edges The top plate is a portion of the left and right edges from the front edge of the top plate to the rear end of the first opening line, the first opening line, and the second sewing machine. You may be comprised from a pair of 2nd opening part by the right and left enclosed by eyes, and the said 1st opening part enclosed by the said 1st perforation.

  According to the packaging box, the second opening part surrounded by the first opening line, the second perforation, and the left and right edges is separated from the first opening part and the front flap in the top plate. It is connected with only the outer flap via the left and right edges. Therefore, after the first perforation is cut, that is, after the first opening portion is opened, the second opening portion can be raised with the left and right edges as the rotation axis, thereby opening the opening portion. It becomes possible to open the whole.

  The said packaging box WHEREIN: A 3rd perforation may be provided in the part from the front edge of the said top plate to the rear end of the said 1st opening line in the said right and left edges. According to the packaging box, after the first perforation is cut, that is, after the first opening portion is opened, each second opening portion can be separated from the outer flap through the cutting of the third perforation. It will be possible.

The perspective view which shows the perspective structure of a packaging box. The top view which shows the blank sheet for manufacturing a packaging box. The perspective view which shows the perspective structure of the packaging box in the process in which a packaging box is opened. The perspective view which shows the perspective structure of the packaging box in the process in which a packaging box is opened. The perspective view which shows the perspective structure of the packaging box in the process in which a packaging box is opened. The perspective view which shows the perspective structure of the packaging box in the process in which a packaging box is opened.

  An embodiment of a packaging box and a blank sheet will be described with reference to FIGS. In the following description, a corrugated cardboard lap land box is shown as an example of a packaging box, and one of the pair of side walls of the packaging box is opposed to the front wall and the front wall. The other side wall is the rear wall, and the front-rear direction and the left-right direction are defined.

[Packaging box]
As shown in FIG. 1, the packaging box having a rectangular parallelepiped shape includes a bottom plate 11, front and rear side walls 12, 13, 14, 15, a top plate 16, and a front flap 17. The front, rear, left and right side walls 12, 13, 14, and 15 surround the bottom plate 11 with an upper edge that defines an opening 11 </ b> T having a rectangular shape facing the bottom plate 11. The top plate 16 is connected to the upper edge 13U of the rear wall 13, which is one side wall, and covers the entire opening 11T. The front flap 17 is connected to the front edge 16F of the top plate 16 and has a belt shape joined to the outer surface of the front wall 12.

  The top plate 16 includes a right edge 16R having a linear shape extending in the front-rear direction and a left edge 16L having a linear shape extending in the front-rear direction. The right edge 16R and the left edge 16L are examples of left and right edges that are a pair of left and right edges. The right wall 14, which is one side wall, includes an outer flap 14 </ b> F <b> 1 connected to the right edge 16 </ b> R of the top plate 16 and an outer flap 14 </ b> F <b> 2 connected to the bottom plate 11. The left wall 15 as one side wall includes an outer flap 15F1 (see FIG. 2) connected to the left edge 16L of the top plate 16 and an outer flap 15F2 (see FIG. 2) connected to the bottom plate 11.

  The top plate 16 includes a first perforation. The first perforation is composed of two first opening lines 1L1 and two second opening lines 1L2. The front end of each first opening line 1L1 is located at the front edge 16F of the top plate 16, and the rear end 1LC of each first opening line 1L1 is located between the separate left and right edges of the top plate 16. Each first opening line 1L1 has a linear shape with an inclination with respect to the left and right edges. Each second opening line 1L2 extends from the rear end 1LC of the separate first opening line 1L1 toward the upper edge 13U of the rear wall 13 and constitutes the left and right edges of the top plate 16. A hexagonal plate-shaped region surrounded by the first perforation in the top plate 16 is one first opening portion 161 for opening the opening 11T.

  Each of the left and right edges of the top plate 16 is composed of one second opening line 1L2 and one rotation axis 16S. Each rotation axis 16S is a fold line connecting the top plate 16 and the outer flaps 14F1 and 15F1, and extends from the left and right ends of the front edge 16F of the top plate 16 to the rear end 1LC of the first opening line 1L1. The front edge 16F of the top plate 16 includes a pair of start lines 16FE on the left and right sides, and an intermediate line 16FC that is a fold line sandwiched between the pair of start lines 16FE. Each start line 16FE is an example of a second perforation, and is connected from the left and right ends of the front edge 16F of the top plate 16 to the front end of the first opening line 1L1. In the top plate 16, a region having a triangular plate shape surrounded by the start line 16FE, the first opening line 1L1, and the rotation axis 16S is a pair of second opening parts 162 on the left and right. The top plate 16 includes a first opening portion 161 surrounded by the first perforation and these two second opening portions 162.

  The front flap 17 includes a pair of flap end portions 17E on the left and right and a flap intermediate portion 17C sandwiched between the pair of flap end portions 17E. The upper edge of the flap intermediate portion 17C is the intermediate line 16FC, and the inner surface of the flap intermediate portion 17C is joined to the outer surface of the front wall 12 by the adhesive portion 1A. The upper edge of each flap end 17E is the start line 16FE. The boundary between each flap end portion 17E and the flap intermediate portion 17C is a fold line 17L extending downward from the front end of the first opening line 1L1, and each fold line 17L is formed on the inner surface of the front flap 17.

[Blank sheet]
Next, the blank sheet for manufacturing a packaging box is demonstrated.
As shown in FIG. 2, in one blank sheet, a front flap 17 having a strip shape, a top plate 16 having a rectangular plate shape, a rear wall 13, a bottom plate 11, and a front wall 12 are arranged in this order. ing. The front flap 17 is connected to the front edge 16F of the top plate 16. As described above, the front edge 16F is composed of a pair of start lines 16FE on the left and right sides and an intermediate line 16FC sandwiched between the pair of start lines 16FE. As described above, the top plate 16 includes a first perforation composed of a pair of first opening lines 1L1 on the left and right and a pair of second opening lines 1L2 on the left and right, and is surrounded by the first perforations. 1 opening part 161 and it is comprised from a pair of 2nd opening part 162 by the right and left other than that. The top plate 16 is connected to the upper edge 13U of the rear wall 13, and the upper edge 13U of the rear wall 13 also serves as the rear edge 16B of the top plate 16. The rear wall 13 is connected to the rear edge 11 </ b> B of the bottom plate 11, and the front wall 12 is connected to the front edge 11 </ b> F of the bottom plate 11.

  The outer flap 14F1 is connected to the right edge 16R of the top plate 16, and the outer flap 15F1 is connected to the left edge 16L of the top plate 16. The left and right outer flaps 14F2 and 15F2 are connected to the left and right edges L of the bottom plate 11. The left and right inner flaps 14I2 and 15I2 are connected to the left and right edges L of the rear wall 13, and the left and right inner flaps 14I1 and 15I1 are connected to the left and right edges L of the front wall 12.

  The intermediate line 16FC of the front edge 16F, the rear edge 16B of the top plate 16, the rear edge 11B of the bottom plate 11, and the front edge 11F of the bottom plate 11 are examples of the second folding line, and the surface of the blank sheet is the same as the folding line 17L. It is a linear groove formed by pressing. The right edge 16R of the top plate 16, the left edge 16L of the top plate 16, the left and right edges L of the bottom plate 11, the left and right edges L of the rear wall 13, and the left and right edges L of the front wall 12 are also made of a blank sheet. It is a linear groove formed by pressing the surface. Each start line 16FE, each first opening line 1L1, and each second opening line 1L2 of the front edge 16F is a linear portion in which cuts penetrating the blank sheet are formed intermittently.

  When a packaging box is manufactured from a blank sheet, first, an article such as a food is placed on the inner surface of the bottom plate 11, and the front wall 12 and the rear wall 13 are raised with respect to the bottom plate 11. Next, the left and right inner flaps 14I1 and 15I1 are bent with respect to the front wall 12 so as to wrap the article, and the left and right inner flaps 14I2 and 15I2 are bent with respect to the rear wall 13 so as to wrap the article. . Next, the top plate 16 is bent with respect to the rear wall 13 so as to cover the article. Subsequently, the left and right outer flaps 14F2 and 15F2 are bent with respect to the bottom plate 11, and the left and right outer flaps 14F2 and 15F2 are bent with respect to the top plate 16. The outer flaps 14F1 and 15F2 are bent. Next, the front flap 17 is bent so that the front flap 17 and the front wall 12 face the top plate 16. The inner surface of the front flap 17 and the outer surface of the front wall 12 are joined, and the inner surfaces of the left and right outer flaps 14F1, 14F2, 15F1, and 15F2 and the outer surfaces of the left and right inner flaps 14I1, 14I2, 15I1, and 15I2 are joined together. Be joined. As a result, the right wall 14 is formed from the inner flaps 14I1 and 14I2 and the outer flaps 14F1 and 14F2, and the left wall 15 is formed from the inner flaps 15I1 and 15I2 and the outer flaps 15F1 and 15F2, and the packaging box is sealed. Is done.

[Action]
Next, a procedure for opening the packaging box will be described.
As shown in FIG. 3, when the packaging box is opened, first, a pair of flap end portions 17E are picked by a user's finger or the like, and a start line 16FE that is a boundary between each flap end portion 17E and the top plate 16 is cut. Is done. Next, in a state where each flap end portion 17E is picked by a finger or the like, the front flap 17 is bent at a fold line 17L that is a boundary between each flap end portion 17E and the flap intermediate portion 17C.

  As shown in FIG. 4, the front flap 17 is pulled up from the front wall 12 with each flap end 17 </ b> E being picked by a finger or the like. At this time, since articles such as food are housed inside the packaging box and continue to press the bottom plate 11 downward, the front flap 17 is pulled up, so that the flap intermediate portion 17C and the front wall 12 are joined. Is released.

  Next, as shown in FIG. 5, with each flap end portion 17E being picked by a finger or the like, each first opening line 1L1 of the top plate 16 is cut from the front end toward the rear end 1LC, thereby The second opening part 162 is separated from the first opening part 161. Furthermore, each 2nd opening line 1L2 of the top plate 16 is cut | disconnected from the front end toward the rear end, and, thereby, the 1st opening part 161 is parted from the right and left outer flaps 14F1 and 15F1. During this time, the range that can be picked by the user is the flap end portion 17E that is both ends of the front flap 17. Therefore, the external force for cutting the first opening line 1L1 from the flap intermediate part 17C toward the right edge 16R and the first opening line 1L1 from the flap intermediate part 17C toward the left edge 16L are separated. It can be set to a direction and size suitable for. Also for the second opening line 1L2 constituting the right edge 16R and the second opening line 1L2 constituting the left edge 16L, the external force for cutting the second opening line 1L2 can be set to a suitable direction and size separately. Therefore, the operability when opening the packaging box can be improved.

Next, as shown in FIG. 6, each second opening portion 162 is separated from the first opening portion 161 and the front flap 17 and is connected to only the outer flaps 14F1 and 15F1 via the rotation axis 16S. The Therefore, after the first unsealing line 1L1 is cut, that is, after the first unsealing portion 161 is unsealed, each second unsealing portion 162 can be raised with the rotation axis 16S as the rotation axis. In this way, the entire opening 11T can be opened. As a result, the article can be exposed from the entirety of the opening 11T, and the user can easily grasp the article and thus take out the article from the inside of the packaging box.
As mentioned above, according to the said embodiment, the effect described below is acquired.

  (1) Since the packaging box is opened in a state where the flap end 17E that is both ends of the front flap 17 is continuously picked, each first opening line 1L1 and each second opening line 1L2 are cut. The external force can be set to a suitable direction and size separately. Therefore, the operability when opening the packaging box can be improved.

  (2) After the first opening portion 161 is opened, the second opening portion 162 can be raised with the rotation axis 16S as the rotation axis, and therefore the entire opening 11T can be opened. Become.

  (3) The intermediate line 16FC of the front edge 16F, the rear edge 16B of the top plate 16, the rear edge 11B of the bottom plate 11, and the front edge 11F of the bottom plate 11 were formed by pressing the surface of the blank sheet, like the folding line 17L. It is a linear groove. Therefore, since it is possible to form the fold line 17L on the same side as the intermediate line 16FC, the front edge 11F, and the rear edges 11B and 16B for one blank sheet together with each fold line 17L, Compared with the method of forming on separate surfaces, it becomes possible to increase the productivity of the blank sheet.

In addition, the said embodiment can also be changed and implemented as follows.
[Rotation axis 16S]
The rotation axis 16S can be changed to a perforation. According to the configuration in which the rotation axis 16S is changed to the perforation, since the second opening 162 can be separated from the outer flap 14F1, the opening 11T can be more easily opened. At this time, the rotation axis 16S is an example of a third perforation.

[First perforation]
The first perforation can be embodied as two straight lines or curves connecting a pair of front ends located on the front edge 16F of the top plate 16 and a rear end located on the rear edge 16B of the top plate 16. is there. The first perforation includes a pair of front ends on the left and right sides of the front edge 16F of the top plate 16, and is specifically closed loop in which line segments extending from the front ends toward the rear edge 16B of the top plate 16 are connected to each other. It is also possible to

[Front flaps 17]
The shape of the front flap 17 is not limited to a strip shape extending in the left-right direction, but is embodied in a semicircular plate shape having the front edge 16F of the top plate 16 as one side or a triangular plate shape having the front edge 16F of the top plate 16 as one side. It is also possible.

The length of the flap end portion 17E in the left-right direction can be larger than, for example, 1/3 of the front flap 17 in the left-right direction, and can also be 1/3 or less. If the configuration is larger than 1/3, it is easy to bend the flap end portion 17E with respect to the flap intermediate portion 17C. On the other hand, if the configuration is 1/3 or less, the length of the flap intermediate portion 17C. Therefore, it is easy to ensure the bonding strength between the front flap 17 and the front wall 12.
The fold line 17L, which is the boundary between the flap intermediate portion 17C and the flap end portion 17E, can be located on the outer surface of the front flap 17.

[Packaging box]
The right wall 14 and the left wall 15 are embodied as a single plate, like the front wall 12 and the rear wall 13, and the front wall 12 and the rear wall 13 are the same as the right wall 14 and the left wall 15, A joined body of a flap and an outer flap is also possible.

  DESCRIPTION OF SYMBOLS 1A ... Adhesion part, L ... Edge, 1L1 ... 1st opening line, 1L2 ... 2nd opening line, 1LC ... Rear end, 11 ... Bottom plate, 11T ... Opening, 12 ... Front wall, 13 ... Rear wall, 13U ... Upper edge , 14 ... right wall, 14F1, 14F2, 15F1, 15F2 ... outer flap, 14I1, 14I2, 15I1, 15I2 ... inner flap, 15 ... left wall, 16 ... top plate, 16B ... rear edge, 11F, 16F ... front edge, 16FC ... intermediate line, 16FE ... start line, 16L ... left edge, 16R ... right edge, 16S ... rotation axis, 17 ... front flap, 17C ... flap intermediate part, 17E ... flap end part, 17L ... folding line, 161 ... first Opening part, 162 ... 2nd opening part.

Claims (4)

A packaging box,
The bottom plate,
Front and rear left and right side walls that surround the bottom plate with an upper edge that defines an opening facing the bottom plate;
A top plate connected to the upper edge of the rear wall that is one of the side walls and covering the opening;
A front flap connected to the outer surface of the front wall connected to the front edge of the top plate,
The top plate is provided with a first perforation extending from a pair of left and right front ends located at a front edge of the top plate toward an upper edge of the rear wall, and a region surrounded by the first perforation in the top plate is provided. , A first opening for providing the opening,
The front flap includes a pair of flap end portions on the left and right sides, and a flap intermediate portion that is the joined portion sandwiched between the pair of flap end portions,
The boundary between each flap end and the flap intermediate part is a fold line extending downward from each front end of the first perforation,
The front edge of the top plate includes a pair of second perforations on the left and right connecting the left and right ends of the front edge to separate front ends of the first perforation. It further comprises outer flaps that are provided separately on the left and right edges of the top plate to form left and right side walls,
The first perforation extends from each front end located at the front edge of the top plate to a rear end located in the middle of the left and right edges with an inclination with respect to the left and right edges; and A second opening line extending from the rear end of the opening line toward the upper edge of the rear wall and constituting the left and right edges;
The top plate has a pair of left and right edges surrounded by a portion from a front edge of the top plate to a rear end of the first opening line, the first opening line, and the second perforation. The packaging box of Claim 1. It is comprised from 2 opening parts and the said 1st opening part enclosed by the said 1st perforation. The packaging box of Claim 2. The 3rd perforation is provided in the part from the front edge of the said top board to the rear end of the said 1st opening line in the said right and left edges. The bottom plate,
Front and rear left and right side walls that surround the bottom plate with an upper edge that defines an opening facing the bottom plate;
A top plate connected to the upper edge of the rear wall that is one of the side walls and covering the opening;
A front flap connected to the outer surface of the front wall connected to the front edge of the top plate;
A blank sheet used in the manufacture of a packaging box comprising:
The front flap, the top plate, the rear wall, the bottom plate, and the front wall are connected in this order,
The top plate includes a first perforation extending from a pair of front ends on the front edge of the top plate toward the upper edge of the rear wall, and a region surrounded by the first perforation in the top plate is provided. , A first opening for providing the opening,
The front flap includes a pair of flap end portions on the left and right sides, and a flap intermediate portion that is the joined portion sandwiched between the pair of flap end portions,
The boundary between each flap end and the flap intermediate part is a fold line extending downward from each front end of the first perforation,
The front edge of the top plate includes a pair of second perforations on the left and right connecting the left and right ends of the front edge to separate front ends of the first perforation.