JP6905482B2 - Packaging box - Google Patents

Description

The present invention relates to a packaging box made of corrugated cardboard.

Conventionally, a square tubular body formed by a pair of alternating first side plates and a second side plate and a pair of closing portions for closing both ends of the body are provided, and the closing portion is provided. , Each inner flap connected to both end edges of each second side plate is bent inward, and each outer flap connected to both end edges of each first side plate is bent inward and polymerized and bonded to the inner flap. A packaging box formed by this is known (see Patent Document 1).

In the packaging box described in Patent Document 1, in order to facilitate the opening work and the like, each second side plate and inner flap are provided with a corrugated cardboard breaking zipper composed of two breakable lines. Then, in the closed portion, the upper and lower outer flaps are polymerized and adhered to the inner flap along the upper and lower breakable lines of the corrugated cardboard breaking zipper so that the corrugated cardboard breaking zipper can pass through.

On the other hand, the packaging box has an upper half open at one of the closed portions in order to facilitate taking out the beverage cans and the like one by one when the beverage cans and the like are put into the vending machine and the like. Is desired. In this case, in the packaging box, after the upper outer flap that closes the upper half of the closed portion is peeled off from the inner flap and folded up, the upper half of the left and right inner flaps are broken along the breakable line. Will be done.

Japanese Unexamined Patent Publication No. 2016-155559

However, in the packaging box described in Patent Document 1, when the upper half of the left and right inner flaps is broken along the breakable line and folded up, it breaks along either the upper or lower breakable line of the corrugated cardboard breaking zipper. There is a disadvantage that it cannot be controlled and an opening having an unintended shape may be formed.

An object of the present invention is to provide a packaging box capable of eliminating such inconvenience and easily forming an opening having an intended shape in the upper half of the closed portion.

In order to achieve such an object, the packaging box of the present invention includes a square tubular body portion and a pair of closing portions that block both ends of the body portion, and the body portions are alternately provided in series. Formed by each pair of first and second side plates, the closure extends inward from both end edges of each second side plate, with each inner flap having gaps at the opposite tip edges and each first side plate. In a corrugated cardboard packaging box formed by each outer flap extending inward from both end edges and laminated and adhered to the outside of the inner flap, a predetermined width extends from each inner flap to each second side plate. The upper outer flap that closes the upper half of the closed portion is provided with the first breaking means formed by the above, and the tip of the upper outer flap is overlapped and adhered to the inner flap along the upper end edge of the first breaking means, and is below the closed portion. The tip of the lower outer flap that closes the half is overlapped and adhered to the inner flap along the lower edge of the first breaking means, while the tip center portion extends beyond the first breaking means toward the tip of the upper outer flap. A projecting portion that protrudes and closes the gap between the inner flaps is provided, and a second breaking means that extends from the tip end thereof to the upper end edge of the first breaking means along the outer edge of the projecting portion is provided in the upper half portion of each inner flap. It is characterized by that.

In the packaging box of the present invention, when an opening is formed in the upper half of the closed portion, first, the upper outer flap is peeled off from the left and right inner flaps to which the upper outer flap is polymerized and adhered, and the upper outer flap is folded up. Next, a hand is put in the gap between the left and right inner flaps, and the upper half of each inner flap is broken and folded up along the first breaking means.

At this time, the left and right inner flaps are suppressed by the protruding portions, but in the packaging box of the present invention, the protruding portions are cut by breaking the upper half of each inner flap along the second breaking means. By avoiding it, it can be easily folded while breaking along either the upper end edge or the lower end edge of the first breaking means, and an opening having an intended shape is easily formed in the upper half of the closed portion. be able to.

Further, the packaging box of the present invention is provided with a third breaking means at the connecting portion between the outer flap and the first side plate that closes the upper half portion of the closed portion, and connects the upper half portion of the inner flap and the second side plate. It is preferable that the portion is provided with a fourth breaking means.

In the packaging box of the present invention, the folded upper outer flap can be broken and removed by the third breaking means, and the upper half of the folded inner flap can be broken and removed by the third breaking means. Therefore, it is possible to more easily form an opening having an intended shape.

The development view which shows one Embodiment of the packaging box of this invention. A perspective view of a packaging box obtained by assembling the developed view shown in FIG. A is a perspective view showing a state in which the outer flap of the packaging box shown in FIG. 2 is folded up, B is a perspective view showing a state in which the inner flap of the packaging box shown in FIG. 2 is folded up, and C is a perspective view showing a state in which the inner flap of the packaging box shown in FIG. 2 is folded up. The perspective view which shows the state which formed the opening.

Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in the unfolded state (outer surface side) in FIG. 1, the packaging box 1 of the present embodiment is formed of a single corrugated cardboard board punched into an unfolded shape, and each pair of first side plates 2 and 3 and The second side plates 4 and 5 are alternately connected via the fold lines 6, 7 and 8, and the adhesive piece 10 is provided on the edge parallel to the fold line 8 of the second side plate 4 via the fold line 9. It is installed continuously.

In the packaging box 1, the first side plate 2 is the bottom surface and the first side plate 3 is the top surface. Therefore, at the edge orthogonal to the crease lines 7 and 8 of the first side plate 2, the crease lines 11 and 12 are interposed. The lower outer flaps 13 and 14 are continuously provided, and the upper outer flaps 17 and 18 are continuously provided at the edge of the first side plate 3 orthogonal to the crease line 6 via the fold lines 15 and 16.

In addition, inner flaps 21 and 22 are continuously provided at the edge orthogonal to the crease lines 8 and 9 of the second side plate 4 via the crease lines 19 and 20, and the crease lines 6 and 7 of the second side plate 5 are provided. Inner flaps 21 and 22 are continuously provided at the edges orthogonal to the crease lines 19 and 20.

The lower outer flaps 13 and 14 are provided with protrusions 27 and 28 at the center of the tip, and the upper outer flaps 17 and 18 are provided with oval-shaped finger insertion portions 29 and 30. The finger insertion portions 29 and 30 are provided with fold lines 31 and 32 parallel to the fold lines 15 and 16 on the side close to the fold lines 15 and 16, and the cut lines 33 are provided in the portions other than the oval-shaped fold lines 31 and 32. , 34 are provided.

Further, the first side plate 3 is provided with house-shaped finger insertion portions 35 and 36 at positions symmetrical with the finger insertion portions 29 and 30 with respect to the fold lines 15 and 16. The finger insertion portions 35 and 36 are provided with fold lines 37 and 38 parallel to the fold lines 15 and 16 at a portion corresponding to the roof of the house shape on the side close to the fold lines 15 and 16, and the fold lines of the house shape are provided. The cut lines 39 and 40 are provided in the portions other than 31 and 32.

The packaging box 1 further includes a first breaking means 41 formed linearly from one inner flaps 21 and 25 to the other inner flaps 22 and 26 via the second side plates 4 and 5, and inner flaps 21 and 22. , 25, 26 The second breaking means 42 formed of an arc-shaped cut line from the tip portion to the first breaking means 41, and the crease line which is a connecting portion between the upper outer flaps 17, 18 and the first side plate 3. Folded lines 19, 20, 23, 24, which are the connecting portions between the third breaking means 43 formed on the sewing wires 15 and 16 and the inner flaps 21, 22, 25, 26 and the second side plates 4, 5. A fourth breaking means 44 made of a sewing wire formed at a portion connecting the upper folding lines 6 and 9 and the first breaking means 41 is provided.

The first breaking means 41 is, for example, a synthetic resin tape attached to the back surface side of the inner flaps 21, 22, 25, 26 and the second side plates 4, 5 and along the length direction of the synthetic resin tape. It is formed to a predetermined width by the perforations formed on both sides thereof. The first breaking means 41 can be broken starting from the H cut 45 formed by the H-shaped cut line provided at the center of the second side plates 4 and 5.

As shown in FIG. 2, the packaging box 1 has the first side plate 2 as the bottom surface, the second side plates 4 and 5 are bent and erected on both sides thereof, and the first side plate 3 is bent so as to be parallel to the first side plate 2. A square tubular body portion 51 is formed by bending the adhesive pieces 10 connected to the second side plate 4 and polymerizing and adhering them to the first side plate 3. The pair of closing portions 52, 53 that close both ends of the body portion 51 have inner flaps 21 and 25 connected to the end edges of the second side plates 4 and 5 inward, as shown by taking the closing portion 52 as an example. The lower outer flap 13 connected to the edge of the first side plate 2 and the upper outer flap 17 connected to the end edge of the first side plate 3 are bent inward and polymerized on the inner flaps 21 and 25. It is formed by bonding.

At this time, the inner flaps 21 and 25 are bent so as to have a gap between them and extend inward from the edge edges of the second side plates 4 and 5, so that the opposite tip edges have a gap. Further, the lower outer flap 13 extends inward from the end edge of the first side plate 2 and is bent along the lower end edge of the first breaking means 41, and the upper outer flap 17 is the end of the first side plate 3. It extends inward from the edge and is bent along the upper edge of the first breaking means 41. As a result, the window portion 54 is formed by the gap between the inner flaps 21 and 25 and the gap between the lower outer flap 13 and the upper outer flap 17, but the window portion 54 is provided at the center of the tip portion of the lower outer flap 13. The window portion 54 is closed when the protruding portion 27 exceeds the first breaking means 41 and comes into contact with the tip of the upper outer flap 17. On the other hand, the second breaking means 42 of the inner flaps 21 and 25 is arranged at a position along the outer edge of the protruding portion 27.

Next, a method of forming an opening in the closed portion 52 of the packaging box 1 will be described with reference to FIG.

When forming an opening in the closed portion 52 of the packaging box 1, first, as shown in FIG. 3A, the upper outer flap 17 is peeled from the inner flaps 21 and 25 and folded up along the crease line 15, and the inner flap 21 is formed. , 25 are exposed. Next, the upper outer flap 17 is broken and removed by the third breaking means 43 formed on the crease line 15. In the state where the upper outer flap 17 is broken, the inner flaps 21 and 25 are suppressed by the protruding portion 27 above the first breaking means 41.

Next, as shown in FIG. 3B, the upper half of the inner flaps 21 and 25 (the portion above the upper end edge of the first breaking means 41) is broken along the second breaking means 42, and further, the first breaking means is further broken. By breaking along the upper edge of 41, it is folded up along the crease lines 19 and 23. By breaking the upper half of the inner flaps 21 and 25 along the second breaking means 42, the restraint of the protruding portion 27 can be released, and the upper half portion is easily broken along the upper end edge of the first breaking means 41. be able to. Next, the inner flaps 21 and 25 are broken and removed by the fourth breaking means 44 formed at the portion connecting the crease lines 6 and 9 on the crease lines 19 and 23 and the first breaking means 41.

As a result, as shown in FIG. 3C, the opening 55 can be formed in the upper half of the closing portion 52 above the upper end edge of the first breaking means 41.

In the present embodiment, the closed portion 52 is described as an example, but in the packaging box 1, an opening can be formed in the closed portion 53 in the same manner as in the case of the closed portion 52.

1 ... Packaging box, 2, 3 ... 1st side plate, 4, 5 ... 2nd side plate, 13, 14 ... Lower outer flap, 17, 18 ... Upper outer flap, 21, 22, 25, 26 ... Inner flap, 27, 28 ... projecting portion, 41 ... first breaking means, 42 ... second breaking means, 51 ... body portion, 52, 53 ... closing portion.

Claims (2)

It is provided with a square tubular body portion and a pair of closing portions that block both ends of the body portion, and the body portion is formed by a pair of first side plates and a second side plate that are alternately connected to each other. The closing portion extends inward from both end edges of each second side plate, and extends inward from each inner flap having a gap between the opposite tip edges and both end edges of each first side plate. In a corrugated cardboard packaging box formed by each outer flap that is polymerized and adhered to the outside,
A first breaking means formed with a predetermined width from each inner flap to each second side plate is provided.
The tip of the upper outer flap that closes the upper half of the closed portion is polymerized and adhered to the inner flap along the upper end edge of the first breaking means, and the lower outer flap that closes the lower half of the closed portion is the tip thereof. Is polymerized and adhered to the inner flap along the lower end edge of the first breaking means from both side edge edges toward the center, while protruding toward the tip of the upper outer flap beyond the first breaking means at the center of the tip. With a protrusion that closes the gap between each inner flap,
In the outer region which is polymerized in the protrusion definitive in the upper half of each inner flap, a second breaking means extending from the distal end of the inner flaps to the upper end edge of the first breaking means along the outer edge of the projecting portion A packaging box characterized by that. In the packaging box according to claim 1, a third breaking means is provided at a connecting portion between the outer flap that closes the upper half of the closed portion and the first side plate, and the upper half of the inner flap and the second side plate are connected to each other. A packaging box characterized in that a fourth breaking means is provided in the portion.

Images