JP2019094108A - Packing box - Google Patents

Abstract

To provide a packing box that can secure sealability and strength and be easily opened.SOLUTION: A packing box 1 comprises a top plate 11 and a bottom plate 12, a pair of front and back end walls 13 and 14 connected consecutively to the bottom plate 12, and a pair of left and right side walls 15 and 16 connected consecutively to the bottom plate 12. A rear edge part of the top plate 11 is connected consecutively to an upper edge part of the rear end wall 14 through a ruled line, and a front edge part of the top plate 11 is connected consecutively to an upper edge part of the front end wall 13 through a cutting guide line. Left and right side edge parts of the top plate 11 are connected consecutively to upper edge parts of the left and right side walls respectively. In the side walls 15 and 16 are formed a main body part 50 connected consecutively to the top plate 11 through the cutting guide line and insertion parts 51 connected consecutively to the top plate 11 through ruled lines, where the main body part 50 is connected consecutively to the insertion parts 51 through the cutting guide lines.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a packaging box.

In a conventional cardboard packaging box, the rear edge of the top plate is connected to the rear end wall via creases, and the front edge and left and right edges of the top plate are front end wall and left and right side walls through perforations. There are some which are connected to each other. Moreover, in the above-mentioned packaging box, the recessed part is formed in the upper edge part of the front end wall (for example, refer patent document 1).
When opening such a packaging box, it is possible to cut open each perforation and open the top plate by putting fingers in the recess and pulling up the top plate.

JP, 2016-098027, A

In the state before opening the above-mentioned conventional packaging box, since the opening is formed in the front end wall by the recess, there is a possibility that foreign matter such as dust or dust may enter the inside of the packaging box from the opening.
Moreover, in the conventional packaging box described above, there is a problem that the compressive strength is reduced by forming the opening in the front end wall.

  An object of the present invention is to provide a packaging box which can be easily opened while solving the above-mentioned problems and ensuring sealing and strength.

  In order to solve the above problems, the present invention relates to a packaging box comprising a top plate and a bottom plate, a pair of front and rear end walls continuously connected to front and rear edges of the bottom plate, and a left and right edges of the bottom plate. And a pair of left and right side walls. The rear edge of the top plate is connected to the upper edge of the rear end wall via a crease, and the front edge of the top plate is the upper edge of the front end wall via a cutting guide line It is connected to the The left and right side edges of the top plate are respectively connected to the upper edges of the left and right side walls. The side wall is formed with a main body portion continuously connected to the side edge portion of the top plate via a cutting guide wire, and an insertion portion continuously connected to the side edge portion of the top plate via a ruled line, The main body portion and the insertion portion are connected in series via a cutting guide wire.

In the packaging box of the present invention, since the main body portion and the insertion portion of the side wall are closed in the unopened state, the sealing property can be secured and the reduction of the strength of the side wall can be suppressed.
When the packaging box of the present invention is opened, the recess is formed in the upper edge portion of the side wall by pushing the insertion portion into the inside of the side wall and separating the insertion portion from the main body portion. Then, by putting fingers in the recess of the side wall and pulling up the side edge of the top plate, the top plate can be easily opened and the packaging box can be opened.

In the packaging box described above, the side wall includes front and rear inner flaps respectively connected to the both end walls, and upper and lower outer flaps connected to the top plate and the bottom plate, and the both outer flaps It may be joined to the outer surface of the both inner flaps. In this case, the insertion portion is formed on the upper outer flap.
In this case, for example, even in a wraparound type packaging box in which the side walls are configured by the front and rear inner flaps and the upper and lower outer flaps, the top plate can be easily opened and opened while securing the sealing property and the strength. Can.

  In the packaging box described above, when the insertion portion is formed at the front end portion of the upper outer flap, the front edge portion of the insertion portion becomes the front edge portion of the outer flap, and cutting for partitioning the insertion portion in the side wall Since the guiding wire is shortened, the decrease in the strength of the side wall can be suppressed.

In the case where the inner flap is formed with a bendable portion that can be bent toward the inside of the side wall, it is preferable to overlap the insertion portion on the outer surface of the bend.
According to this configuration, when the insertion portion is pushed into the side wall, the bending portion is bent to the inside of the side wall by being pushed by the insertion portion. Thereby, since the insertion part can be largely inclined toward the inner side of the side wall, the insertion part is easily separated from the side wall.

It is preferable that an upper end portion of the side end of the end wall is formed with an engagement portion that can be bent toward the inside of the end wall.
In this configuration, when the top plate is closed and resealed after opening the packaging box, the engaging portion is bent toward the inside of the end wall. Then, when the top plate is closed, the insertion portion is inserted between the inner surface of the inner flap and the engagement portion. As described above, when the insert portion of the top plate is held between the inner flap and the side edge of the engagement portion, the top plate can be kept closed, so that the packaging box can be resealed.

  Preferably, the top plate is formed with a bending guide line extending in the front-rear direction. In this case, when the side edge portion of the top plate is pulled up, the top plate is bent upward, so that the cutting guide line is easily cut open in the vertical direction.

A bonding piece may be connected to the upper edge of the front end wall via a cutting guide wire, and the top plate may be bonded to the upper surface of the bonding piece.
In this configuration, since the joining piece is easily bent with respect to the upper edge of the end wall, the corners of the end wall and the top plate can be easily and beautifully assembled when the packaging box is assembled. As a result, the load on the worker can be reduced, and the occurrence of box failure can be prevented.

In the packaging box described above, two slits may be formed at the corner between the bottom plate and the side wall, and a handle may be formed between the two slits.
In this configuration, the handle portion can be depressed by pushing the handle portion into the inside of the packaging box and turning the handle portion inward. And by putting your hand on the recessed handle, it becomes easier to carry the packaging box.

  In the packaging box of the present invention, the top plate can be easily opened and opened while securing the sealing property and the strength.

It is the perspective view which looked at the packaging box concerning the embodiment of the present invention from the front upper right. It is a figure showing the blank sheet of the packing box concerning the embodiment of the present invention. In the packaging box which concerns on embodiment of this invention, it is the perspective view which showed the state before assembling a top plate. The packaging box which concerns on embodiment of this invention WHEREIN: It is sectional drawing which showed the state which pushed in the insertion part inside. The packaging box which concerns on embodiment of this invention WHEREIN: It is the perspective view which showed the state which opened the top plate. The packaging box which concerns on embodiment of this invention WHEREIN: It is a perspective view of the state which pushed in the engaging part inside. The packaging box which concerns on embodiment of this invention WHEREIN: It is a front view of the state which pushed in the hand-handling part inside.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the following description, the front, rear, left, and right directions are set for convenience in describing the packaging box of the present embodiment, and the configuration of the packaging box is not limited.

As shown in FIG. 1, the packaging box 1 according to the present embodiment includes a top plate 11 and a bottom plate 12 facing each other in the vertical direction, a pair of front and rear end walls 13 and 14 and a pair of left and right side walls 15 and 16. It is a cardboard box with wrap-around method.
The content to be stored in the packaging box 1 of the present embodiment is not limited, and, for example, a plurality of plastic bottles can be stored.

As shown in FIG. 2, the packaging box 1 of the present embodiment is formed by mountain-folding or valley-folding a blank sheet S obtained by cutting out a single sheet made of a corrugated sheet at each ruled line. The blank sheet S shown in FIG. 2 is disposed so that the inner side can be seen.
Each ruled line (folding line) of the blank sheet S is a linear groove formed by pressing the surface of the blank sheet S. In addition, you may form a slit in a ruled line. This makes it easier to bend the blank sheet S at the ruled lines.

The top plate 11, the bottom plate 12, the front end wall 13 and the rear end wall 14 are each formed in a rectangular shape as shown in FIG.
A rear end wall 14 is continuously provided at the rear edge of the bottom plate 12 via a ruled line L1. The rear end wall 14 extends upward from the rear edge of the bottom plate 12. The rear end wall 14 is formed perpendicular to the bottom plate 12.

  The top plate 11 is continuously provided on the upper edge portion of the rear end wall 14 via the ruled line L2. The top plate 11 extends forward from the upper edge of the rear end wall 14. The top plate 11 is formed perpendicular to the rear end wall 14. The top plate 11 has the same shape as the bottom plate 12.

  A front end wall 13 is connected to the front edge portion of the bottom plate 12 via a crease L3. The front end wall 13 extends upward from the front edge of the bottom plate 12. The front end wall 13 is formed perpendicular to the bottom plate 12. The front end wall 13 has the same shape as the rear end wall 14.

As shown in FIG. 3, a joining piece 17 is connected to the upper edge of the front end wall 13 via a first cutting guide line L21. The joining piece 17 is formed in a band shape along the upper edge of the front end wall 13. The first cutting guide line L21 is a perforation in which a plurality of slits are linearly arranged.
The joining piece 17 is a portion to be joined to the front end of the inner surface of the top plate 11 by an adhesive as shown in FIG. Thus, the front edge of the top plate 11 is connected to the upper edge of the front end wall 13 via the first cutting guide line L21.

  When the joining piece 17 is joined to the inner surface of the top plate 11 while bending the blank sheet S (see FIG. 2) with the creases L1 to L3 and the first cutting induction line L21, the bottom plate 12, the rear end wall 14, the top plate 11 and the front end wall 13 Is formed in a square tube shape.

  The right side wall 16 includes a front inner flap 31 connected to the front end wall 13, a rear inner flap 32 connected to the rear end wall 14, and an upper outer flap 33 connected to the top plate 11. , And a lower outer flap 34 connected to the bottom plate 12.

  The front inner flap 31 is connected to the right edge of the front end wall 13 via a ruled line L11. The front inner flap 31 extends rearward from the right edge of the front end wall 13. The front inner flap 31 is formed perpendicular to the front end wall 13.

  The rear inner flap 32 is connected to the right edge of the rear end wall 14 via a ruled line L12. The rear inner flap 32 extends forward from the right edge of the rear end wall 14. The rear inner flap 32 is formed perpendicular to the rear end wall 14.

  The rear edge portion of the front inner flap 31 and the front edge portion of the rear inner flap 32 butt against each other in the center of the right side wall 16 in the front-rear direction.

  The upper outer flap 33 is connected to the right edge of the top plate 11 via a ruled line L13. The upper outer flap 33 extends downward from the right edge of the top plate 11. The upper outer flap 33 is formed perpendicular to the top plate 11.

  The lower outer flap 34 is connected to the right edge of the bottom plate 12 via a crease L14. The lower outer flap 34 extends upward from the right edge of the bottom plate 12. The lower outer flaps 34 are formed perpendicular to the bottom plate 12.

  The vertical length of the outer flaps 33 and 34 is about 1/3 of the vertical length of the right side wall 16. Therefore, the upper and lower outer flaps 33 and 34 are spaced apart in the vertical direction.

Upper and lower outer flaps 33, 34 are superimposed on the outer surface of the front and rear inner flaps 31, 32. The inner surfaces of the outer flaps 33 and 34 are bonded to the outer surfaces of the inner flaps 31 and 32 by an adhesive such as hot melt.
Thus, the right and left side walls 16 are formed by superposing the upper and lower outer flaps 33 and 34 on the outer surfaces of the front and rear inner flaps 31 and 32, respectively.

  As shown in FIG. 3, the front inner flap 31 is continuously connected to the right edge of the front end wall 13 via the ruled line L11 except for the upper part of the front edge, and the upper part of the front edge is a perforation. It is provided continuously with the right edge of the front end wall 13 via the cutting guide line L22.

  The front inner flap 31 is formed with a third cutting guide line L23 which is a perforation extending in the vertical direction parallel to the second cutting guide line L22. The third cutting guide line L23 is disposed at a substantially central portion in the front-rear direction of the inner flap 31 on the front side. The third cutting guide line L23 is formed to have the same length as the second cutting guide line L22.

  A fourth cutting guide line L24 which is a perforation extending in the vertical direction parallel to the third cutting guide line L23 is formed in the rear inner flap 32. The fourth cutting guiding line L24 is disposed substantially at the center in the front-rear direction of the inner flap 32 on the rear side. The fourth cutting guiding line L24 is formed to have the same length as the third cutting guiding line L23.

On the front and rear inner flaps 31, 32, a first bending guide line L31 extending in the front-rear direction parallel to the upper edge portion is formed. The first bending guide line L31 is a ruled line formed on the inner surface of the inner flaps 31, 32.
In addition, in each figure, in order to demonstrate 1st bending guidance line L31 intelligibly, the 1st bending guidance line L31 may be illustrated in the outer surface of the inner flaps 31 and 32. FIG.
The first bending guide line L31 is formed from the front edge portion of the inner flap 31 on the front side to the lower end portion of the fourth cutting guide line L24 of the inner flap 32 on the rear side.

In the inner flap 31 on the front side, a first bent portion 41 is formed between the second cutting guide line L22 and the third cutting guide line L23. The first bent portion 41 is formed at an upper front corner of the inner flap 31 on the front side.
The front and rear edges of the first bent portion 41 are separated from the front inner flap 31 by cutting and opening the second cutting guide line L22 and the third cutting guide line L23. The first bent portion 41 separated from the front inner flap 31 can be bent inward with respect to the right side wall 16 at the first bending guiding line L31 (see FIG. 4).

In the front and rear inner flaps 31 and 32, a second bent portion 42 is formed between the third cutting guide line L23 and the fourth cutting guide line L24. The second bent portion 42 is formed at a central portion in the front-rear direction of the right side wall 16.
The front and rear edges of the second bent portion 42 are separated from the front and rear inner flaps 31 and 32 by cutting and opening the third cutting guide line L23 and the fourth cutting guide line L24. The second bent portion 42 separated from the front and rear inner flaps 31 and 32 can be bent inward with respect to the right side wall 16 at the first bending guiding line L31.

As shown in FIG. 1, the upper outer flap 33 is formed with a main body portion 50 and an insertion portion 51.
The insertion portion 51 is a rectangular portion formed at the front upper corner of the upper outer flap 33. The upper edge portion of the insertion portion 51 is provided continuously with the front end portion of the right edge portion of the top plate 11 via the ruled line L13.

The main body portion 50 is a portion other than the insertion portion 51 in the upper outer flap 33. The upper edge portion of the main body portion 50 is continuously provided to the right edge portion of the top plate 11 via a ruled line L13 and a sixth cutting guide line L26 formed on the ruled line L13.
The sixth cutting guiding line L26 is formed at a portion other than the portion in contact with the insertion portion 51 at the ruled line L13. That is, the sixth cutting guiding line L26 is formed at a portion other than the front end portion of the ruled line L13.

The main body portion 50 and the insertion portion 51 are continuously provided via the fifth cutting and guiding wire L25. Then, the rear edge portion and the lower edge portion of the insertion portion 51 can be separated from the main body portion 50 by cutting the fifth cutting guide line L25 (see FIG. 5).
As shown in FIG. 4, the insertion portion 51 separated from the upper outer flap 33 can be bent toward the inside of the right side wall 16 at a crease L13.

  The insertion part 51 is superimposed on the outer surface of the 1st bending part 41 of the inner flap 31 of the front side, as shown in FIG. The inner surface of the insertion portion 51 and the outer surface of the first bent portion 41 are not bonded.

  At the top of the main body 50, a handle hole 35 is opened. The hand hole 35 is a through hole formed at the center of the upper outer flap 33 in the front-rear direction. The hand hole 35 is disposed at the rear of the insertion portion 51.

The hand hole 35 is closed by the folded piece 36. The upper edge of the folded piece 36 is connected to the opening edge of the handle hole 35 through a crease. Then, the handle hole 35 can be opened by folding back the folded piece 36 inward.
The folding pieces 36 are superimposed on the outer surface of the second bent portion 42 of the front and rear inner flaps 31 and 32. The inner surface of the folded piece 36 and the outer surface of the second bent portion 42 are not joined.

The left side wall 15 is symmetrical to the right side wall 16 described above, and thus the detailed description thereof is omitted.
The left side wall 15 is formed on the front and rear inner flaps 31 and 32 continuously connected to the left edge of the front end wall 13 and the left edge of the rear end wall 14, and the left edge of the top plate 11 and the left edge of the bottom plate 12. It is comprised by the upper and lower outer flaps 33 and 34 provided in series, respectively. Further, as shown in FIG. 3, a first bent portion 41 and a second bent portion 42 are formed on the front inner flap 31 of the left side wall 15, and the upper outer flap 33 is provided with the main body portion 50 and the insertion portion 51 is formed.

  At the right end of the front end wall 13, a seventh cutting guide line L27 which is a perforation extending in the vertical direction in parallel with the second cutting guide line L22 on the right side is formed. The seventh cutting lead L27 is formed to have the same length as the second cutting lead L22.

At an upper portion of the front end wall 13, a second bending guide line L32 extending in the left-right direction parallel to the upper edge portion is formed. The second bending guide line L32 is a ruled line formed on the inner surface of the front end wall 13.
In each of the drawings, the second bending guide line L32 may be illustrated on the outer surface of the front end wall 13 in order to facilitate understanding of the second bending guide line L32.
The second bending guide line L32 is formed from the right edge of the front end wall 13 to the lower end of the seventh cutting guide line L27.

An engagement portion 61 is formed between the second cutting guide line L22 and the seventh cutting guide line L27. The engaging portion 61 is formed at the upper right corner of the front end wall 13.
The left and right edges of the engaging portion 61 are separated from the front end wall 13 by cutting and opening the second cutting guiding line L22 and the seventh cutting guiding line L27. The engaging portion 61 separated from the front end wall 13 is bendable inward with respect to the front end wall 13 at the second bending guide line L32 (see FIG. 6).
Similar to the right engaging portion 61 formed at the upper right corner of the front end wall 13, the left engaging portion 61 is formed at the upper left corner of the front end wall 13.

As shown in FIG. 1, the left and right two bending guide lines L41 and L41 extending in the front-rear direction are formed on the top plate 11 of the present embodiment (see FIG. 2). The bending guiding line L41 is a ruled line formed on the inner surface of the top plate 11.
In each of the drawings, the bending guiding line L41 may be illustrated on the outer surface (upper surface) of the top plate 11 in order to facilitate understanding of the bending guiding line L41.

  The left and right bending guide lines L41, L41 are formed from the front edge to the left and right edges of the top plate 11. The space | interval of the left-right direction of bending guide line L41, L41 on either side is formed so that it may become large as it goes to a rear end part from a front end part.

As shown in FIG. 3, when the front end of the top plate 11 is superimposed on the outer surface of the joining piece 17, the left and right bending induction lines L 42, L 41 and L 41 overlapping the left and right bending induction lines L 41 and L 41 of the top plate 11. L42 is formed. The bending guiding line L42 is a ruled line formed on the inner surface of the joining piece 17.
In each of the drawings, the bending guiding line L42 may be illustrated on the outer surface (upper surface) of the joining piece 17 in order to explain the bending guiding line L42 in an easily understandable manner.

At the bottom of the packaging box 1 of the present embodiment, as shown in FIG. 1, a handle portion 71 is formed at the corner between the bottom plate 12 and the right side wall 16. The handle portion 71 is formed at a central portion in the front-rear direction of the bottom plate 12 and the right side wall 16.
The handle portion 71 is a band-shaped portion formed between the front and rear two slits L51 and L51. The slit L51 is formed from the lower outer flap 34 to the bottom plate 12.
Similar to the handle portion 71 formed at the corner between the bottom plate 12 and the right side wall 16, the handle portion 71 is formed at the corner between the bottom plate 12 and the left side wall 15.

  When carrying the packaging box 1 of the present embodiment, the handle hole 35 is opened by folding back the folded piece 36 shown in FIG. At this time, the second bent portion 42 is bent inward by being pushed by the folding piece 36. Thus, the folding piece 36 can be folded inward. Then, the packaging box 1 can be carried by putting a hand on the left and right hand-handling holes 35, 35 opened.

  Further, as shown in FIG. 7, when the handle portion 71 at the bottom of the packaging box 1 is pushed inward, the entire handle portion 71 is folded back inside, and the handle portion 71 is recessed inward. In addition, since the notch part is formed in the position corresponding to the handle part 71 in the lower edge part of the inner flaps 31 and 32 of back and front, the handle part 71 can be turned back inside. Then, the packaging box 1 can be carried by putting a hand on the recessed left and right handed parts 71, 71.

Next, the procedure for opening the packaging box 1 of the present embodiment will be described.
When the packaging box 1 is opened, as shown in FIG. 4, the left and right insertion parts 51, 51 are pushed inward with fingers, and the left and right insertion parts 51, 51 are the main body 50 of the left wall 15 and the right wall 16; Separate from 50 respectively. At this time, the first bent portion 41 of the front inner flap 31 is pushed by the insertion portion 51 and bent inward.

When the left and right insertion parts 51, 51 are separated from the main body parts 50, 50 of the left side wall 15 and the right side wall 16, left and right recesses 52, 52 are formed in the upper edge of the left side wall 15 and the upper edge of the right side wall 16, respectively. Be done.
The fingers placed in the left and right recesses 52, 52 are hooked on the left and right side edges of the top plate 11, and as shown in FIG. 5, the left and right edges of the top plate 11 are pulled up. At this time, the left and right sides of the top plate 11 and the joint piece 17 are bent upward at the bending guiding lines L41 and L42 (see FIG. 3), and the first cutting guiding line L21 and the sixth cutting guiding line L26 are cut open. Be

  Then, by tilting the top plate 11 rearward to separate the top plate 11 from the front end wall 13, the left side wall 15 and the right side wall 16, the packaging box 1 is opened.

In addition, when resealing after opening the packaging box 1, as shown in FIG. 6, the engaging parts 61 and 61 on either side are bend | folded toward the inner side of the front end wall 13. As shown in FIG.
Then, the top plate 11 is inclined downward, and the insertion portion 51 is inserted between the inner surface of the front inner flap 31 and the side edge portion of the engagement portion 61.
Thus, the packaging box 1 can be resealed by holding the insertion portion 51 of the top plate 11 between the inner flap 31 on the front side and the side edge of the engaging portion 61 and closing the top plate 11. .

  In the packaging box 1 of the present embodiment as described above, as shown in FIG. 1, since the main body 50 and the insertion portion 51 of the left side wall 15 and the right side wall 16 are closed in the unopened state It is possible to prevent the reduction of the compressive strength of the left side wall 15 and the right side wall 16 while securing the rigidity.

  When opening the packaging box 1 of the present embodiment, as shown in FIG. 4, the left and right insertion portions 51, 51 are pushed inward to form the recessed portions 52, 52 in the left side wall 15 and the right side wall 16. Then, by putting fingers in the left and right recesses 52 and 52 and pulling up the top plate 11 as shown in FIG. 5, the top plate 11 can be easily opened and the packaging box 1 can be opened.

  As described above, in the packaging box 1 of the present embodiment, the top plate 11 can be easily opened and opened while sufficiently ensuring the sealability and strength when unopened.

  In the packaging box 1 of the present embodiment, as shown in FIG. 4, when the insertion portion 51 is pushed inward, the first bending portion 41 is bent inward by being pushed by the insertion portion 51. Thereby, since the left and right insertion parts 51, 51 can be largely inclined inward, the left and right insertion parts 51, 51 can be easily separated from the left side wall 15 and the right side wall 16.

  In the packaging box 1 of the present embodiment, as shown in FIG. 5, when the side edge portion of the top plate 11 is pulled up, the side portion of the top plate 11 is bent upward in a valley fold at the bending guide line L41. The first cutting guiding wire L21 and the sixth cutting guiding wire L26 can be easily cut open in the vertical direction.

  In the packaging box 1 of the present embodiment, as shown in FIG. 1, the insertion portion 51 is formed at the front end of the upper outer flap 33. In this way, the front edge of the insertion portion 51 becomes the front edge of the upper outer flap 33. Thereby, since the fifth cutting guide line L25 for dividing the insertion portion 51 into the left side wall 15 and the right side wall 16 becomes short, it is possible to suppress a decrease in the compressive strength of the left side wall 15 and the right side wall 16.

  In the packaging box 1 of the present embodiment, as shown in FIG. 3, the joint piece 17 is continuously provided on the upper edge portion of the front end wall 13 via the first cutting guide line L21. In this configuration, the joint piece 17 is easily bent with respect to the upper edge portion of the front end wall 13. Therefore, when assembling the packaging box 1, the corner between the front end wall 13 and the top plate 11 can be assembled easily and beautifully. . As a result, the load on the worker can be reduced, and the occurrence of box failure can be prevented.

As mentioned above, although embodiment of this invention was described, this invention can be suitably changed in the range which does not deviate from the meaning, without being limited to the said embodiment.
In the packaging box 1 of the present embodiment, as shown in FIG. 5, the insertion portion 51 is formed in both the left side wall 15 and the right side wall 16, but the insertion portion 51 is formed in only one of the left side wall 15 and the right side wall 16. May be formed.

  In the packaging box 1 of the present embodiment, as shown in FIG. 1, the insertion portion 51 is formed at the front end portion of the upper outer flap 33, but the insertion portion 51 is formed at the center of the upper outer flap 33 in the front-rear direction. May be formed.

  In the packaging box 1 of the present embodiment, the front edge portion of the top plate 11 is continuously connected to the upper edge portion of the front end wall 13 via the joint piece 17. However, the front edge portion of the top plate 11 is It may be provided in a row at the upper edge of 13. In this case, a first cutting guide line L21 is formed on the crease between the front edge of the top plate 11 and the upper edge of the front end wall 13.

Although each cutting guide wire of this embodiment is a perforation, the cutting guide wire may be formed by a single slit or a half cut line.
Although each bending guide line of the present embodiment is a ruled line formed by pressing the surface of the blank sheet, a slit may be formed on the ruled line. Furthermore, the bending guide line may be formed by a plurality of slits.

The packaging box 1 of the present embodiment is a wrap around type corrugated box, but the present invention is applicable to various box bodies such as a B-type cardboard box.
Further, although the packaging box 1 of the present embodiment is made of cardboard, the packaging box may be formed of various known paperboards.

DESCRIPTION OF SYMBOLS 1 packaging box 11 top plate 12 bottom plate 13 front end wall 14 back end wall 15 left side wall 16 right side wall 17 joint piece 31 front inner flap 32 rear inner flap 33 upper outer flap 34 lower outer flap 35 surfaced hole 36 folded back Piece 41 first bending portion 42 second bending portion 50 main body portion 51 insertion portion 52 concave portion 61 engaging portion 71 hand portion L21 first cutting induction wire L22 second cutting induction wire L23 third cutting induction wire L24 fourth cutting induction wire L25 fifth cutting induction line L26 sixth cutting induction line L27 seventh cutting induction line L31 first bending induction line L32 second bending induction line L41 bending induction line L42 bending induction line S blank sheet

Claims (8)

Top and bottom plates,
A pair of front and rear end walls connected to the front and rear edges of the bottom plate;
A pair of left and right side walls provided continuously with the left and right side edges of the bottom plate;
The rear edge of the top plate is connected to the upper edge of the rear end wall via a crease,
The front edge of the top plate is connected to the upper edge of the front end wall via a cutting guide line,
The left and right side edges of the top plate are provided continuously with the upper edges of the left and right side walls,
The side walls
A main body connected to the side edge of the top plate via a cutting guide wire;
An insertion portion connected to the side edge of the top plate via a ruled line;
The packaging box characterized in that the main body portion and the insertion portion are connected in series via a cutting guide wire. It is a packaging box of Claim 1, Comprising:
The side wall is
Front and rear inner flaps respectively connected to the both end walls;
And upper and lower outer flaps connected respectively to the top plate and the bottom plate;
The outer flaps are joined to the outer surface of the inner flaps,
The packaging box characterized in that the insertion portion is formed on the upper outer flap. It is a packaging box of Claim 2, Comprising:
The packaging box according to claim 1, wherein the insertion portion is formed at a front end of the upper outer flap. It is a packaging box of Claim 2 or Claim 3, Comprising:
The inner flap is formed with a bendable portion that can be bent toward the inside of the side wall,
A packaging box characterized in that the insertion portion is overlapped on the outer surface of the bent portion. A packaging box according to any one of claims 2 to 4, wherein
An upper end portion of a side end portion of the end wall is formed with an engagement portion which can be bent toward the inside of the end wall. The packaging box according to any one of claims 1 to 5, wherein
A packaging box characterized in that a bending guide line extending in the front-rear direction is formed on the top plate. A packaging box according to any one of the preceding claims, wherein
At the upper edge of the front end wall, a joining piece is provided in series via a cutting guide wire,
A packaging box characterized in that the top plate is joined to the upper surface of the joining piece. It is a packaging box as described in any one of Claims 1-7, Comprising:
At the corner between the bottom plate and the side wall, two front and rear slits are formed,
A packaging box characterized in that a handle portion is formed between the two slits.

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