JP6927513B2 - Packaging box - Google Patents

Description

The present invention relates to a packaging box, and more particularly to a packaging box having a hollow hexahedral shape.

As a packaging box for storing cosmetics, chemicals, confectionery, stationery, and other items, a blank, which is a thin sheet material made of paper or plastic cut into a predetermined shape, is placed along a folding curve. It is often used that is assembled into a three-dimensional shape by bending it. In a packaging box using a blank, an article is generally housed inside a cylindrical body having a rectangular cross section including a pair of front and rear front plates and a pair of left and right side plates, and a lid flap piece is inserted into the tip and the flap pieces are connected to each other. By covering the upper and lower openings of the tubular body, the upper surface and the lower surface are formed and assembled into a hexahedral shape.

In these packaging boxes, when the articles are stored and resealed after being opened once, if they can be easily restored to the same state as before the opening, the stored articles may be tampered with by mischief or the like. Therefore, various packaging boxes having a falsification prevention function have been developed so that it can be visually identified that the box has already been opened.

In the packaging box with tamper-proof measures, by providing a break line for opening the packaging box, it was possible to visually recognize that the box was opened and it was easy to open, but the break line was visible even before opening. Because it was visible, the aesthetics of the box were spoiled.
For example, as a tampering prevention measure, there is a packaging box provided with a tampering prevention measure having a break line on the upper surface (see, for example, Patent Document 1), but it is continuously provided on the side plate portion where the fixed piece is not adhered. There is a risk that the stored article may be pulled out from between the folding piece and the top plate portion, and there is a problem that it is not sufficient for the purpose of protecting the product in use. Furthermore, there is also a proposal for a packaging box in which a fixed piece is provided on the side to provide a falsification prevention function (see, for example, Patent Document 2), and although falsification is difficult, the side plate to which the fixed piece is not adhered is still used. There was still the possibility that a finger could be inserted through the gap while deforming the packaging box between the upper surface side flaps and the upper surface main flaps that were continuously installed.
Further, as a falsification prevention measure, there is a method of adhering the insertion piece of the main flap (see, for example, Patent Document 3), but there is a problem that a dedicated device is required and man-hours are required.

Japanese Unexamined Patent Publication No. 2010-247885 Japanese Unexamined Patent Publication No. 2013-230855 Jitsukaisho 61-146221

The present invention has been devised in view of the above problems, and provides a packaging box in which falsification prevention measures are taken, a dedicated device is not required, workability is excellent, openability is good, and the door can be reclosed. The task is to do.

The present invention is a hollow hexahedral packaging box including a pair of front and rear front plates, a pair of left and right side plates, an upper surface portion and a lower surface portion, and the upper surface portion is an upper end portion of the pair of left and right side plates. The upper surface side flaps connected via the fold curve are folded inward so as to overlap each other, and the upper surface main flaps connected via the fold curve are folded over the upper end of one front plate. An insertion flap connected to the tip of the upper surface main flap via a folding curve is inserted inside the upper end portion of the other front plate, and is overlapped on the upper side of the upper surface side flaps that overlap each other. A first upper sticking piece that is connected to one of the upper surface side flaps via a fold curve, protrudes from the fold curve of the other upper surface side flap, and extends to the side plate to which the other upper surface side flap is connected. The first upper fixing piece, which is provided, achieves the above object by providing a packaging box adhered to the side plate.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a packaging box in which falsification prevention measures are taken, a dedicated device is not required, workability is excellent, openability is good, and the door can be reclosed.

It is a schematic external view (the 1) of the packaging box which concerns on 1st Embodiment. It is a schematic external view (the 2) of the packaging box which concerns on 1st Embodiment. It is a developed view of the blank for forming the packaging box which concerns on 1st Embodiment. It is a schematic external view (the 1) of the packaging box which concerns on the modification of the 1st Embodiment. It is a schematic external view (the 2) of the packaging box which concerns on the modification of the 1st Embodiment. It is a developed view of the blank for forming the packaging box which concerns on the modification of 1st Embodiment. It is a schematic external view (the 1) of the packaging box which concerns on 2nd Embodiment. It is a schematic external view (the 2) of the packaging box which concerns on 2nd Embodiment. It is a schematic diagram (the 1) which shows the specific example of the 1st upper fixed piece which concerns on embodiment. It is a schematic diagram (No. 2) which shows the specific example of the 1st upper fixed piece which concerns on embodiment. It is a schematic diagram (No. 3) which shows the specific example of the 1st upper fixed piece which concerns on embodiment. It is a schematic diagram which shows the relationship of the 1st upper fixed piece, the 2nd upper fixed piece and the embossed part which concerns on embodiment. It is a schematic diagram which shows the specific example of the embossed part which concerns on embodiment. It is a developed view of the blank for forming the packaging box which concerns on 2nd Embodiment. It is a schematic external view (the 1) of the packaging box which concerns on 3rd Embodiment. It is a schematic external view (the 2) of the packaging box which concerns on 3rd Embodiment. It is a developed view of the blank for forming the packaging box which concerns on 3rd Embodiment. It is a schematic external view (the 1) of the packaging box which concerns on the modification of the 3rd Embodiment. It is a schematic external view (the 2) of the packaging box which concerns on the modification of the 3rd Embodiment. It is a developed view of the blank for forming the packaging box which concerns on the modification of 3rd Embodiment. It is a schematic external view (the 1) of the packaging box which concerns on 4th Embodiment. It is a schematic external view (the 2) of the packaging box which concerns on 4th Embodiment. It is a developed view of the blank for forming the packaging box which concerns on 4th Embodiment. It is a schematic external view (the 1) of the packaging box which concerns on other embodiment. It is a developed view of the blank for forming the packaging box which concerns on other embodiment. It is a schematic diagram which shows the specific example of the 1st upper fixed piece which concerns on other embodiment. It is a schematic external view (the 2) of the packaging box which concerns on other embodiment.

(First Embodiment)
As shown in FIG. 1 or 2, the packaging box 10 according to the first embodiment of the present invention includes a pair of front and rear front plates 11a and 11b, a pair of left and right side plates 12a and 12b, an upper surface portion 14, and a lower surface portion. It is a hollow hexahedral packaging box provided with 15, and the upper surface portion 14 has upper surface side flaps 17a and 17b connected to the upper ends of a pair of left and right side plates 12a and 12b via a folding curve 16a, respectively. The upper surface main flap 18 is folded inward so as to overlap each other, and the upper surface main flap 18 connected via the folding curve 16b is folded over the upper end portion of one front plate 11a, and is folded at the tip end portion of the upper surface main flap 18. The insertion flap 18a connected via the curve 16c is inserted inside the upper end portion of the other front plate 11b, and one of the upper surface side flaps 17a and 17b overlapping each other is the upper surface side flap that is overlapped on the upper side. A first upper fixing piece 21 is provided which is connected to 17b via a folding curve, protrudes from the folding curve 16a of the other upper surface side flap 17a, and extends to the side plate to which the other upper surface side flap is connected. The first upper fixing piece 21 is adhered to the side plate 12a.

The packaging box 10 according to a preferred embodiment of the invention shown in FIG. 1 is commercialized by packing articles such as cosmetics, chemicals, confectionery, and stationery. Further, in the packaging box 10 of the present embodiment, the lower surface main flap 26 (FIG. 3) has an opening at the lower end of a tubular main body 13 composed of a pair of front and rear front plates 11a and 11b and a pair of left and right side plates 12a and 12b. After being closed by the lower surface portion 15 formed by (see) or the like, the article is housed inside the tubular main body 13 through the opening at the upper end portion of the tubular main body 13. After that, the opening of the upper end portion of the tubular main body 13 is closed by the upper surface portion 14 formed by the upper surface main flap 18 (see FIG. 3) or the like, so that the tubular main body 13 is assembled into a hollow hexahedral shape containing an article inside. ..

In the present embodiment, the upper surface side flaps 17b stacked on the upper side are provided with the first upper easy break line 22 surrounding the folding curve 16d of the first upper fixed piece 21, and both ends of the first upper easy break line 22. The portions 22a and 22b are connected to the edge provided with the first upper fixing piece 21 of the upper surface side flap, or both end portions 22a and 22b of the first upper easy break line 22 are connected to the first upper fixing piece 21 of the upper surface side flap. It is preferable to connect to the provided edge edge and the edge edge on the front plate 11b side.
Since the packaging box 10 is provided with the first upper easy break line 22, it can be opened for the first time by breaking along the first upper easy break line 22 at the time of opening, and the opening operation is facilitated. be able to. Then, it can be recognized that the packaging box 10 has been opened as a result of the first upper easy breaking line 22 being broken.
Further, even after the packaging box 10 is opened once, the upper surface portion 14 can be opened and closed so that the stored articles can be smoothly taken in and out, and the portion where the first upper easy break line 22 is broken is , It is formed in the vicinity of the connecting portion of the signboard portion 37, and is formed at a position inconspicuous in appearance when the signboard portion 37 is viewed from the front.

The packaging box 10 of the present embodiment is formed by using, for example, a sheet of paper blank 23 as shown in FIG. The blank 23 can be easily obtained by, for example, punching and cutting a thin plate-shaped paper sheet material so as to have a predetermined shape in which the hexahedral packaging box 10 is developed. The blank 23 has shape-retaining rigidity and elasticity enough to easily hold a smoothly curved state without bending even when the side edge portion is gripped and horizontally extended in a cantilever shape, and the blank 23 has a hand. It has a deformability that allows it to be easily bent by force.

Further, the blank 23 includes, for example, a folding curve 16a, 16b, 16c, 16d, 16e, 16f, 16g, 16h made of a ruled line or the like, a vertical folding curve 24, a first upper easy breaking line 22 made of a perforated machine, or the like. By providing the notch 27 made of all the cut lines or the like at an appropriate position, the packaging box 10 can be easily assembled from the blank 23 so as to have a hexahedral shape.

In the present embodiment, in the cut blank 23 shown in FIG. 3, for example, one rectangular front plate 11a is arranged on the left side of the developed view. On the right side of one front plate 11a, one rectangular side plate 12a is connected via a vertical folding curve 24. On the right side of one side plate 12a, the other rectangular front plate 11b is connected via a vertical folding curve 24. On the right side of the other front plate 11b, the other rectangular side plate 12b is connected via a vertical folding curve 24. Further, on the left side of one front plate 11a, an adhesive joint piece 25 having a vertical width similar to that of, for example, one front plate 11a and a width that can be joined is laterally provided via a vertical folding curve 24. It overhangs and is connected.

Above the one front plate 11a, a substantially square upper surface main flap 18 is connected via a folding curve 16b. Above the upper surface main flap 18, an insertion flap 18a having a width similar to that of, for example, the upper surface main flap 18 and having a vertically width that can be inserted is projected upward and connected via a folding curve 16c. At both ends of the folding curve 16c between the upper surface main flap 18 and the insertion flap 18a, a known locking mechanism is formed between the locking pieces 29 provided at the base ends of the upper surface side flaps 17a and 17b, which will be described later. A locking notch 27 is formed.

Below the one front plate 11a, a substantially square lower surface main flap 26 is connected via a folding curve 16e. Below the lower surface main flap 26, an insertion flap 26a having a width similar to that of, for example, the lower surface main flap 26 and having a vertically width that can be inserted is projected downward and connected via a folding curve 16f. At both ends of the folding curve 16f between the lower surface main flap 26 and the insertion flap 26a, a known locking mechanism is formed between the locking pieces 29 provided at the base ends of the lower surface side flaps 28a and 28b, which will be described later. A locking notch 27 is formed.

Above one side plate 12a, one upper surface side flap 17a having a substantially right-angled trapezoidal shape is connected via a folding curve 16a.
Further, in the present embodiment, one upper surface side flap 17a has a locking notch 27 formed in the upper surface main flap 18 at the base end portion of the side edge portion on the other front plate 11b side which is a hypotenuse portion. A lock piece 29 constituting a known lock mechanism is provided so as to project outward.

Below one side plate 12a, one lower surface side flap 28a having a substantially right-angled trapezoidal shape is connected via a folding curve 16h.
Further, in the present embodiment, one lower surface side flap 28a has a locking notch 27 formed in the lower surface main flap 26 at the base end portion of the side edge portion on the other front plate 11b side which is a hypotenuse portion. A lock piece 29 constituting a known lock mechanism is provided so as to project outward.

Above the other front plate 11b, a substantially horizontally long rectangular signboard portion 37 is provided in connection with each other via a boundary line 36. The signboard portion 37 maintains a state of being substantially flush with the other front plate 11b without bending the boundary line 36, and when the hollow hexahedral packaging box 10 is assembled, the other front plate The signboard portion 37 is formed so as to stand upright from 11b (see FIG. 1). The boundary line 36 may be a folded curve composed of a ruled line or the like, and may be a mere boundary between the front plate 11b and the signboard portion 37 and may not have a ruled line or the like.

Above the other side plate 12b, the other upper surface side flap 17b, which is substantially the same length as the length of the upper surface main flap 18 (distance from the folding curve 16b to the folding curve 16c), is connected via the folding curve 16a. doing. Since the upper surface side flap 17b has substantially the same length as the upper surface main flap 18, the packaging box 10 is closed, and the upper surface side flap 17b is accommodated by inserting a finger or the like from the side edge portion of the upper surface main flap 18. It is possible to effectively avoid mischief such as forcibly exchanging items.
In the present embodiment, the first upper fixing piece 21 protruding from one end of the upper surface side flap 17b (for example, the end facing the folding curve 16a) is provided in connection with each other via the folding curve 16d. The first upper fixing piece 21 has, for example, a substantially right-angled trapezoidal shape. The folding curve 16d may be an easily broken line that has been perforated to separate the first upper fixed piece 21.
The upper surface side flap 17b is provided with a first upper easy break line 22 formed of, for example, a perforation, which surrounds the folding curve 16d of the first upper fixing piece 21. In the present embodiment, the first upper easy breaking line 22 to which both end portions 22a and 22b are connected to the upper end portion and the side edge portion of the upper surface side flap 17b is, for example, a broken portion 20a having a shape like an elliptical shape in half. It is provided along the outer circumference of the so as to form. The broken portion 20a is preferably large enough to accommodate the tip of the finger in order to improve the openability of the upper surface side flap 17b. For example, the fractured portion 20a has a vertical width of about 15 mm and a horizontal width of about 35 mm. Is preferable. Further, in the present embodiment, the break portion 20a surrounded by the first upper easy break line 22 is provided at a portion close to the other front plate 11b into which the insertion flap 18a of the upper surface main flap 18 is inserted. ing. Since the first upper easy break line 22 is provided in a portion close to the other front plate 11b, the operation of breaking the first upper easy break line 22 and opening the upper surface side flap 17b can be smoothly performed. Will be possible. Further, since the first upper easy break line 22 and the break portion 20a are arranged at the corner portion where the rigidity of the packaging box 10 is high, the packaging box 10 is formed by a relatively thin blank 23. However, it is easy to break along the first upper easy break line 22 without bending.

Below the other side plate 12b, the other lower surface side flap 28b having a substantially right-angled trapezoidal shape is connected via a folding curve 16h. Further, the base end portion of the side edge portion of the other lower surface side flap 28b on the other front plate 11b side, which is a hypotenuse portion, is known to have a locking notch 27 formed in the lower surface main flap 26. The lock piece 29 constituting the lock mechanism is provided so as to project outward.

In the present embodiment, the packaging box 10 can be easily assembled into a three-dimensional shape containing articles by a simple process using the above-mentioned blank 23, preferably using a known sealing device (box making machine). .. That is, for example, after applying an adhesive to the adhesive joint piece 25 connected to the left side of one front plate 11a, the adhesive joint piece 25 is placed along the side edge of the other side plate 12b via the adhesive. By joining to the side surface, as shown in FIG. 2, a rectangular hollow shape composed of a pair of front and rear front plates 11a and 11b and a pair of left and right side plates 12a and 12b bent along each vertical folding curve 24. A tubular main body 13 having a cross-sectional shape is formed.

After the tubular main body 13 is formed, the opening at the lower end thereof is closed by using a pair of lower surface side flaps 28a and 28b and a lower surface main flap 26. That is, the lower surface side flaps 28a and 28b on both sides that are connected to the lower side of the pair of side plates 12a and 12b are bent inward through the folding curve 16h and folded on the lower surface side flaps 28a and 28b from below. The lower surface main flap 26 is bent inward through the folding curve 16e so as to be overlapped. Further, the insertion flap 26a connected to the tip of the lower surface main flap 26 via the folding curve 16f is inserted along the inner surface of the lower end portion of the other front plate 11b, and is used for locking formed at both ends of the folding curve 16f. The notch 27 is locked to each of the lock pieces 29 formed at the base ends of the pair of lower surface side flaps 28a and 28b. As a result, the opening at the lower end of the tubular main body 13 is covered with the lower surface portion 15 composed of the pair of lower surface side flaps 28a and 28b and the lower surface main flap 26 to close the opening.

After closing the opening at the lower end of the tubular main body 13, the article is housed inside the tubular main body 13. That is, in the present embodiment, as an article, for example, a cylindrical cosmetic container filled with cosmetics is fitted into the tubular main body 13 from the bottom side through the opening at the upper end portion. Insert and place in.

After the article is housed inside the tubular main body 13 in which the lower surface portion 15 is closed, the opening at the upper end portion of the tubular main body 13 is closed by using a pair of upper surface side flaps 17a and 17b and an upper surface main flap 18. Specifically, the upper surface side flap 17a connected to the upper side of the side plate 12a is bent inward via the folding curve 16a, and then the upper surface side flap 17b connected to the upper side of the side plate 12b is bent inward with the folding curve 16a. Bend inward through. Then, the upper surface main flap 18 is bent inward via the folding curve 16b so as to be folded over the upper surface side flaps 17a and 17b from above. Further, an insertion flap 18a connected to the tip of the upper surface main flap 18 via a folding curve 16c is inserted along the inner surface of the upper end portion of the other front plate 11b, and the base end portions of the pair of upper surface side flaps 17a and 17b are inserted. Each of the lock pieces 29 formed in the above is locked. Then, after applying an adhesive to one surface which is the adhesive surface of the first upper fixing piece 21 connected to the upper surface side flap 17b, the first upper fixing piece 21 is bent through the folding curve 16d to fix the first upper part. The piece 21 is adhered to the side plate 12a.
It is preferable that at least one adhesive surface of the first upper fixing piece 21 and the side plate 12a is perforated or the like to roughen the surface of the adhesive surface. By roughening the adhesive surface, the adhesive area can be increased, and the adhesive strength between the first upper fixing piece 21 and the side plate 12a can be improved.

As a result, the opening at the lower end of the tubular main body 13 can be covered with the lower surface portion 15 composed of the pair of lower surface side flaps 28a and 28b and the lower surface main flap 26, and can be closed in a firm and stable state. Further, the opening at the upper end of the tubular main body 13 in which the article is housed is covered with the upper surface portion 14 composed of a pair of upper surface side flaps 17a and 17b and the upper surface main flap 18 to close the opening in a strong and stable state. In addition to being able to do so, the article can be housed inside the packaging box 10 assembled in a hexahedral shape.

Further, the packaging box 10 of the present embodiment has a simple structure as described above, and the assembly work can be simplified, so that the packaging box 10 can be assembled efficiently. That is, the packaging box 10 of the present embodiment can be assembled without the need for a dedicated box making machine equipped with a hot melt device or the like.

To take out the packed article from the packaging box 10, as shown in FIG. 2, the upper surface main flap 18 is opened and broken along the first upper easy break line 22, so that the broken portion 20a is broken and the first It is possible to insert the fingertip under the upper surface side flap 17b from the position where the break portion 20a surrounded by the upper easy break line 22 was.
After that, if a force for lifting the upper surface side flap 17b is applied by the inserted fingertip, the upper surface side flap 17b can be easily opened, and the upper surface side flaps 17a and 17b on both sides are further opened. The article can be easily taken out from the packaging box 10.

According to the packaging box 10 according to the first embodiment of the present invention, the upper surface side flap 17b has a shape substantially the same as the upper surface main flap 18, and the upper surface main flap 18 is closed (upper surface). Since the first upper fixing piece 21 is adhered to the side plate 12a in the state where the portion 14 is formed), it is possible to prevent mischief with respect to the housed article.

Further, according to the packaging box 10 according to the first embodiment of the present invention, the upper surface portion 14 can be easily opened by breaking the first upper easy break line 22, and even after the opening once. The opening and closing operation can be smoothly performed while taking in and out the article, and the portion where the first upper easy break line 22 is broken can be made inconspicuous in appearance so as not to spoil the aesthetic appearance. Further, when the folding curve 16d is an easy break line, the first upper fixed piece 21 can be separated from the upper surface side flap 17b so as not to further impair the aesthetic appearance.

Further, according to the packaging box 10 according to the first embodiment of the present invention, when the first upper easy break line 22 is pushed in and opened, the first upper easy break line 22 is broken. However, since it can be identified at a glance, it is possible to effectively exert the tampering prevention function.
Further, even after the first upper easy break line 22 is broken and the packaging box 10 is opened, the upper surface main flap 18 retains the same shape, so that the upper surface main flap 18 can be easily opened and closed while continuing. The cosmetic container can be stored in the packaging box 10 and can be taken out from the packaging box 10.

(Modified example of the first embodiment)
As shown in FIGS. 4 and 5, the packaging box 10 according to the modified example of the first embodiment of the present invention has the first upper fixed piece as compared with the packaging box 10 shown in the first embodiment. The difference is that the adhesive notch 90 is provided on the surface side to be adhered to the side plate 12a of 21. Others are substantially the same, so the description is omitted.

The adhesive notch 90 is formed by a notch process on the surface side of the first upper fixing piece 21 to be adhered to the side plate 12a.
As shown in FIG. 6, the first upper fixing piece 21 is adhered to the side plate 12a by the adhesive portion 91 made of an adhesive or the like provided on the side plate 12a adhering to the periphery of the adhesive notch 90.

When the first upper fixing piece 21 is lifted and opened, the adhesive notch 90 formed by the notch processing undergoes surface peeling and can be easily peeled from the side plate 12a.
When the first upper fixing piece 21 is pulled up as it is, the lock mechanism formed between the lock notch 27 and the lock piece 29 can be easily removed, and the upper surface main flap 18 can be easily opened. After opening the upper surface main flap 18, the upper surface side flaps 17a and 17b are opened so that the article can be easily taken out from the packaging box 10.

(Second Embodiment)
As shown in FIGS. 7 and 8, the packaging box 10 according to the second embodiment of the present invention has the second upper fixed piece 50 and the upper surface as compared with the packaging box 10 shown in the first embodiment. The difference is that the easy break line 51 is further provided. Others are substantially the same, so the description is omitted.

As shown in FIGS. 7 and 8, the second upper fixing piece 50 is preferably provided on the upper surface main flap 18 so as to project laterally via the folding curve 16i.
As shown in FIG. 7, the second upper fixing piece 50 is adhered to the side plate 12a in a state where the upper surface portion 14 is formed so as to be overlapped with the first upper fixing piece 21.

When the second upper fixing piece 50 overlaps with the first upper fixing piece 21 and adheres to the side plate 12a, the first upper fixing piece 50 is adhered to the side plate 12a from the viewpoint of securing the bonding area between the second upper fixing piece 50 and the side plate 12a. The area of 21 is preferably smaller than the area of the second upper fixed piece 50. In addition to the above viewpoint, the area of the first upper fixing piece 21 is 20% of the area of the second upper fixing piece 50 from the viewpoint of securing the adhesive area between the first upper fixing piece 21 and the side plate 12a. It is preferably 80% or more, more preferably 25% or more and 70% or less, and further preferably 30% or more and 60% or less.

As a means for making the area of the first upper fixed piece 21 within the above range, it is possible to reduce the area in a similar manner, but it is also possible to make the first upper fixed piece 21 into a different shape. As a specific example in which the first upper fixing piece 21 has a different shape, as shown in FIG. 9A, the first upper fixing piece 21a may have a shape having a through hole 70. Alternatively, in the first upper fixing piece 21b shown in FIG. 9B, the length from the folding curve 16d to the opposing end is approximately half the length of the second upper fixing piece 50, and the tip is curved. The shape may be mentioned. Further, the first upper fixed pieces 21c and 21d shown in FIGS. 9 (c) and 9 (d) are left and right halves of the shapes of the first upper fixed pieces 21a and 21b shown in FIGS. 9 (a) and 9 (b), respectively. There is also an example of the shape of.
It is preferable that a step portion 74 is provided at the root portion of the first upper fixing pieces 21a to 21d shown in FIG. By providing the step portion 74, the width of the folding curve 16d can be shortened, the deviation caused when the first upper fixing pieces 21a to 21d are folded is reduced, and the first upper fixing pieces 21a to 21d are provided. The bonding process can be performed smoothly. The height of the step due to the step portion 74 is preferably 1 to 2 mm from the folding curve 16d.

Further, from the viewpoint that the second upper fixing piece 50 overlaps with the first upper fixing piece 21 and adheres to the side plate 12a, it is preferable that the bent first upper fixing piece 21 has a shape having a small repulsive force. Specific examples of the shape for reducing the repulsive force of the bent first upper fixing piece 21 include the shapes shown in FIGS. 10 and 11. 10 (a) and 11 (a) are first upper fixed pieces 21a and 21b having a cutout portion 71 over the folding curve 16d. 10 (b) and 11 (b) are first upper fixed pieces 21a and 21b having a cutout portion 71 over the fold curve 16d, and the cutout portion 71 is tapered to further shorten the fold curve 16d. The first upper fixing pieces 21a and 21b have reduced repulsive forces. Further, FIGS. 10 (c) and 11 (d) are first upper fixed pieces 21 in which the repulsive force is reduced by making a notch 72 in the folding curve 16d.
It is preferable that a step portion 74 is provided at the root portion of the first upper fixing pieces 21a and 21b as shown in FIGS. 10 and 11. By providing the stepped portion 74, the width of the folding curve 16d can be shortened, the deviation caused when the first upper fixing pieces 21a and 21b are folded is reduced, and the first upper fixing pieces 21a and 21b are provided. The bonding process can be performed smoothly. The height of the step due to the step portion 74 is preferably 1 to 2 mm from the folding curve 16d.

From the viewpoint of efficiently adhering the first upper fixing piece 21 and the second upper fixing piece 50 to the side plate 12a, as shown in FIGS. 12A and 12A, the second upper fixing piece 12a is fixed to the second upper part. It is preferable to provide the embossed portion 73 at the portion where the piece 50 is adhered and which does not have the first upper fixed piece 21 (for example, the cutout portion 71).
The embossed portion 73 contributes to reducing the step (thickness of the first upper fixed piece 21) between the portion having no first upper fixed piece 21 and the side plate 12a, and the second upper fixed piece 50 and the side plate It is possible to secure the adhesion area with 12a and improve the sticking strength.
The shape of the embossed portion 73 can take various shapes, and as specific examples, the dot shape shown in FIG. 13 (a), the diagonal line shape shown in FIG. 13 (b), the grid shape shown in FIG. 13 (c), and the like. Can be mentioned. The embossed portion 73 can be formed by a well-known embossing technique.

The upper surface main flap 18 is provided with an upper surface easy break line 51 that corresponds to the first upper easy break line 22 and extends in a concave shape large enough to accommodate the tip of the finger, and both ends of the upper surface easy break line 51. It is preferable that 51a and 51b are connected to the side edge portion of the upper surface main flap 18, or both end portions 51a and 51b of the upper surface easy break line 51 are connected to the folding curve and the side edge portion of the insertion flap of the upper surface side flap 18.
Since the packaging box 10 of the present embodiment is provided with the upper surface easy break line 51, it can be opened for the first time by breaking along the upper surface easy break line 51 at the time of opening, and the opening operation is facilitated. be able to. Then, it can be recognized that the packaging box 10 has been opened as a result of the breakage of the upper surface easy break line 51.

In the present embodiment, in the blank 23 shown in FIG. 14 that has been cut, except for the upper surface main flap 18, it is substantially the same as that in FIG. 3, and thus is omitted.
The upper surface main flap 18 in the blank 23 shown in FIG. 14 will be described below.

In the present embodiment, the second upper fixing piece 50 is provided so as to project laterally from the right side edge portion of the upper surface main flap 18 and connected to each other via the folding curve 16i. The second upper fixing piece 50 is preferably large enough to accommodate the tip of a finger, has a substantially right-angled trapezoidal shape, and is provided in a portion close to the insertion flap 18a.
One end 51a is connected to the side edge of the upper surface main flap 18, and the other end 51b is connected to the folding curve 16c between the upper surface main flap 18 and the insertion flap 18a, for example, from a perforation or the like. The upper surface easy break line 51 is provided. In the present embodiment, the upper surface easy break line 51, in which both end portions 51a and 51b are connected to the upper end portion and the side edge portion of the upper surface main flap 18, forms a break portion 20b having a shape like, for example, halving an ellipse. It is provided along the outer circumference of the so as to be. The broken portion 20b is preferably large enough to accommodate the tip of the finger in order to improve the openability of the upper surface main flap 18, for example, the vertical width is about 15 mm and the horizontal width is about 35 mm. Is preferable. Further, in the present embodiment, the break portion 20b surrounded by the upper surface easy break line 51 is provided at a portion close to the other front plate 11b into which the insertion flap 18a of the upper surface main flap 18 is inserted. .. Since the upper surface easy break line 51 is provided in a portion close to the other front plate 11b, it is possible to smoothly perform the operation of breaking the upper surface easy break line 51 and opening the upper surface side flap 17b. Become. Further, since the upper surface easy break line 51 and the break portion 20b are arranged at the corner portion where the rigidity of the packaging box 10 is high, even when the packaging box 10 is formed by a relatively thin blank 23, the upper surface easy break line 51 and the break portion 20b are arranged. It becomes easy to break along the upper surface easy break line 51 without bending.

In the present embodiment, the packaging box 10 can be easily assembled into a three-dimensional shape containing articles by a simple process using the above-mentioned blank 23, preferably using a known sealing device (box making machine). ..
In the present embodiment, when the article is housed inside the tubular main body 13 in which the lower surface portion 15 is closed, the opening of the upper end portion of the tubular main body 13 is opened by using a pair of upper surface side flaps 17a and 17b and an upper surface main flap 18. And block. Specifically, the upper surface side flap 17a connected to the upper side of the side plate 12a is bent inward via the folding curve 16a, and then the upper surface side flap 17b connected to the upper side of the side plate 12b is bent inward with the folding curve 16a. Bend inward through. Further, an insertion flap 18a connected to the tip of the upper surface main flap 18 via a folding curve 16c is inserted along the inner side surface of the upper end portion of the other front plate 11b, and the base ends of the pair of upper surface side flaps 17a and 17b. Each of the lock pieces 29 formed in the portion is locked. Then, the adhesive is applied to one surface which is the adhesive surface of the second upper fixing piece 50 which is connected to the upper surface main flap 18. After that, the first upper fixing piece 21 is bent through the folding curve 16d, then the second upper fixing piece 50 is bent through the folding curve 16i, and the side plate is passed through the first upper fixing piece 21 and the through hole 70. It is laminated on 12a and adhered.
The step of applying the adhesive and the bonding step can be performed at the same time on the first upper fixing piece 21 and the second upper fixing piece 50 to be bonded to the same one side plate 12a, and then the crimping guide or the crimping. The crimping process using a roller can be performed efficiently and smoothly.

In order to take out the packed article from the packaging box 10, the broken portions 20a and 20b are broken by breaking along the upper surface easy break line 51 and the first upper easy break line 22 in the state shown in FIG. 7. When the broken portion 20b is broken, the upper surface main flap 18 can be opened.
By opening the upper surface main flap 18, it becomes possible to insert the fingertip into the lower side of the upper surface side flap 17b from the position where the break portion 20a surrounded by the first upper easy break line 22 was.
After that, if a force for lifting the upper surface side flap 17b is applied by the inserted fingertip, the upper surface side flap 17b can be easily opened, and the upper surface side flaps 17a and 17b on both sides are further opened. The article can be easily taken out from the packaging box 10.

The packaging box 10 according to the second embodiment of the present invention configured in this way can also obtain the same effect as the packaging box 10 according to the first embodiment.

Further, according to the packaging box 10 according to the second embodiment, the upper surface main flap 18 and the side plate 12a are adhered to each other by using the second upper fixing piece 50, which causes mischief to the contained article. It can be prevented more firmly.

(Third Embodiment)
As shown in FIGS. 15 and 16, the packaging box 10 according to the third embodiment of the present invention has a first side easy break line 52 as compared with the packaging box 10 shown in the second embodiment. The difference is that the second upper easy break line 53 is further provided. Others are substantially the same, so the description is omitted.

As shown in FIGS. 15 and 16, the first side easy break line 52 is preferably provided on the upper end portion of the side plate 12a so as to extend in a concave shape large enough to accommodate the tip of the finger. ..
As shown in FIGS. 15 and 16, the second upper easy break line 53 corresponds to the first upper easy break line 22 and has a concave shape having a size that allows the tip of the finger to fit in the upper surface side flap 17a that overlaps the lower side. It is preferable that it is provided so as to extend to.
One end 52a of the first side easy break line 52 is connected to one end 53a of the second upper easy break line 53.

Since the packaging box 10 of the present embodiment is provided with the first side easy break line 52, the first upper easy break line 22, and the second upper easy break line 53, the first side easy break line 52 at the time of opening. By breaking along the first upper easy break line 22 and the second upper easy break line 53, the package can be opened for the first time and the opening operation can be facilitated. Then, it can be recognized that the packaging box 10 has been opened as a result of the first side easy break line 52, the first upper easy break line 22, and the second upper easy break line 53 being broken.

In the present embodiment, in the blank 23 shown in FIG. 17 that has been cut, the parts other than the side plate 12a and the upper surface side flap 17a are substantially the same as those in FIG. 3, and thus are omitted.
The side plate 12a and the upper surface side flap 17a of the blank 23 shown in FIG. 17 will be described below.

At the upper end of one side plate 12a, both ends 52a and 52b are connected to a folding curve 16a between the side plate 12a and the upper surface side flap 17a, for example, a first side easy break line made of perforations or the like. 52 is provided. In the present embodiment, the first side easy break line 52, to which both end portions 52a and 52b are connected to the folding curve 16a between the side plate 12a and the upper surface side flap 17a, is, for example, a substantially right-angled trapezoidal break portion 20c. Is provided so as to extend along the outer circumference thereof in a concave shape having a substantially right-angled trapezoidal shape. The broken portion 20c is preferably large enough to accommodate the tip of the finger in order to improve the openability of the upper surface main flap 18, for example, the vertical width is about 15 mm and the horizontal width is about 20 mm. Is preferable. Further, in the present embodiment, the break portion 20c surrounded by the first side easy break line 52 is provided in a portion close to the other front plate 11b into which the insertion flap 18a of the upper surface main flap 18 is inserted. Has been done. An operation of breaking the first side easy break line 52 and opening the upper surface portion 14 by providing the first side easy break line 52 and the break portion 20c in a portion close to the other front plate 11b. Can be performed more smoothly. Further, since the first side easy break line 52 and the break 20c are provided in a portion close to the other front plate 11b, the upper surface main flap 18 is adhered in a state where the packaging box 10 is closed. By inserting a finger through a gap in a portion that is not provided, it is possible to effectively prevent the contained articles from being forcibly exchanged, and the packaging box 10 becomes more rigid. Since the first side easy break line 52 and the break portion 20c are arranged at the corner portion, the first side portion is not bent even when the packaging box 10 is formed by the relatively thin blank 23. It is easy to break along the side easy break line 52.

Above one side plate 12a, one upper surface side flap 17a having a substantially right-angled trapezoidal shape is connected via a folding curve 16a. On one upper surface side flap 17a, the second upper easy break line 53 is connected to the end portion 52a of the first side easy break line 52 formed at the upper end portion of the side plate 12a, and the second upper easy break line 53 is formed on the upper surface side flap 17a. , It is provided so as to extend to the side edge portion (peripheral portion) on the other front plate 11b side which has become a hypotenuse portion. The second upper easy break line 53, in which one end 53a is connected to the folding curve 16a between the side plate 12a and the upper surface side flap 17a and the other end 53b is connected to the side edge of the upper surface side flap 17a, is the present implementation. In the form, for example, it is provided along the outer circumference of the fractured portion 20d having a substantially right-angled trapezoidal shape. The broken portion 20d is preferably large enough to accommodate the tip of the finger in order to improve the openability of the upper surface main flap 18, for example, the vertical width is about 15 mm and the horizontal width is about 20 mm. Is preferable.
The break portion 20d is provided continuously with the break portion 20c via the folding curve 16a.

In the present embodiment, the packaging box 10 can be easily assembled into a three-dimensional shape containing articles by a simple process using the above-mentioned blank 23, preferably using a known sealing device (box making machine). ..
In the present embodiment, when the article is housed inside the tubular main body 13 in which the lower surface portion 15 is closed, the opening of the upper end portion of the tubular main body 13 is opened by using a pair of upper surface side flaps 17a and 17b and an upper surface main flap 18. And block. Specifically, the upper surface side flap 17a connected to the upper side of the side plate 12a is bent inward via the folding curve 16a, and then the upper surface side flap 17b connected to the upper side of the side plate 12b is bent inward with the folding curve 16a. Bend inward through. Further, an insertion flap 18a connected to the tip of the upper surface main flap 18 via a folding curve 16c is inserted along the inner side surface of the upper end portion of the other front plate 11b, and the base ends of the pair of upper surface side flaps 17a and 17b. Each of the lock pieces 29 formed in the portion is locked. Then, an adhesive is applied to one surface of the first upper fixing piece 21b connected to the upper end of the upper surface side flap 17b and one surface of the second upper fixing piece 50 connected to the upper surface main flap 18. To wear. After that, the first upper fixing piece 21 is bent through the folding curve 16d, and the first upper fixing piece 21b is adhered to the side plate 12a. Next, the second upper fixing piece 50 is bent inward through the folding curve 16i, and is laminated and adhered on the first upper fixing piece 21b bonded to the upper end portion of one side plate 12a.
The step of applying the adhesive and the bonding step can be performed at the same time on the first upper fixing piece 21b and the second upper fixing piece 50 that are adhered to the same one side plate 12a.

In order to take out the packed article from the packaging box 10, in the state shown in FIG. 15, a force of pushing with a fingertip is applied to the breaking portion 20c surrounded by the first side easy breaking line 52. As a result, the first side easy break line 52 is broken, so that the broken portion 20c is pushed inside the packaging box 10. Then, when a force for lifting the upper surface main flap 18 and the upper surface side flap 17b is applied by the inserted fingertip, the broken portions 20a and 20d are opened while breaking the first upper easy breaking line 22 and the second upper easy breaking line 53. Then, the upper surface main flap 18 can be opened. By opening the upper surface main flap 18, the state shown in FIG. 16 is obtained, and the fingertip is from the position where the break portion 20a surrounded by the first upper easy break line 22 is. Can be inserted under the upper surface side flap 17b.
After that, if a force for lifting the upper surface side flap 17b is applied by the inserted fingertip, the upper surface side flap 17b can be easily opened, and the upper surface side flaps 17a and 17b on both sides are further opened. The article can be easily taken out from the packaging box 10.

The packaging box 10 according to the third embodiment of the present invention configured in this way can also obtain the same effect as the packaging box 10 according to the first and second embodiments.

Further, according to the packaging box 10 according to the third embodiment, the upper surface main flap 18 and the side plate 12a are adhered to each other by using the second upper fixing piece 50, so that the stored article is mischievous. It can be prevented more firmly.

(Modified example of the third embodiment)
As shown in FIGS. 18 and 19, the packaging box 10 according to the modified example of the third embodiment of the present invention has a second upper fixed piece as compared with the packaging box 10 shown in the third embodiment. The difference is that an adhesive notch 90 is provided on the surface side to be adhered to the side plate 12a of the 50. Others are substantially the same, so the description is omitted.

The adhesive notch 90 is formed by a notch process on the surface side of the second upper fixing piece 50 to be adhered to the side plate 12a.
As shown in FIG. 20, the second upper fixing piece 50 is adhered to the side plate 12a by the adhesive portion 91 made of an adhesive or the like provided on the side plate 12a adhering to the periphery of the adhesive notch 90.
By adhering the second upper fixing piece 50 to the side plate 12a, even if the first upper fixing piece 21b is not adhered to the side plate 12a, it is sandwiched between the second upper fixing piece 50 and the side plate 12a. Will be done. By sandwiching the first upper fixing piece 21b, the upper surface side flap 17b is less likely to be pulled out, and the effect of preventing tampering can be enhanced.

When the second upper fixing piece 50 is lifted, the adhesive notch 90 formed by the notch processing is surface-peeled, and can be easily peeled off from the side plate 12a.
Further, as shown in FIG. 19, by separating the second upper fixing piece 50 from the upper surface main flap 18, the first upper fixing piece 21b that is not adhered to the side plate 12a is naturally exposed, and the upper surface main flap is easily exposed. The 18 and the upper surface side flaps 17a and 17b are opened so that the article can be easily taken out from the packaging box 10.

(Fourth Embodiment)
As shown in FIGS. 21 and 22, the packaging box 10 according to the fourth embodiment of the present invention is further provided with the lower fixing piece 60 as compared with the packaging box 10 shown in the first embodiment. The point is different. Others are substantially the same, so the description is omitted.

The lower fixed piece 60 is adhered to the side plate 12a with the lower surface portion 15 formed.
In the present embodiment, the lower surface side flap 28b is provided with a lower easy break line 61 surrounding the folding curve 16j of the lower fixed piece 60, and both ends 61a and 61b of the lower easy break line 61 are the lower fixed pieces of the upper surface side flap. It is possible to connect to the edge provided with 60, or to connect both ends 61a and 61b of the lower easy break line 61 to the edge provided with the lower fixing piece 60 of the upper surface side flap and the edge on the front plate 11b side. preferable.
Since the packaging box 10 is provided with the lower easy break line 61, the lower surface portion 15 can be opened for the first time by breaking the lower surface portion 15 along the lower easy break line 61 at the time of opening, and the opening operation is performed. Can be facilitated. Then, it can be recognized that the packaging box 10 has been opened as a result of the lower easy breaking line 61 being broken.

In the present embodiment, in the cut blank 23 shown in FIG. 23, the parts other than the lower surface main flap 26 and the lower fixed piece 60 are substantially the same as those in FIG. 3, and thus are omitted.
The lower surface main flap 26 and the lower fixed piece 60 in the blank 23 shown in FIG. 23 will be described below.

Below the other side plate 12b, the other lower surface side flap 28b, which is substantially the same length as the length of the lower surface main flap 26 (distance from the folding curve 16e to the folding curve 16f), is connected via the folding curve 16h. doing. Since the lower surface side flap 28b has substantially the same length as the lower surface main flap 26, the packaging box 10 is closed, and the lower surface side flap 28b is accommodated by inserting a finger or the like from the side edge portion of the lower surface main flap 26. It is possible to effectively avoid mischief such as forcibly exchanging items.
In the present embodiment, the lower fixed piece 60 is provided so as to project from one end of the lower surface side flap 28b (for example, the end facing the folding curve 16h) and connected to each other via the folding curve 16j. The lower fixing piece 60 has, for example, a substantially right-angled trapezoidal shape. The folding curve 16j may be an easily broken line that has been perforated to separate the lower fixed piece 60.
The lower surface side flap 28b is provided with a lower easy break line 61, for example, formed of a perforation or the like, surrounding the folding curve 16j of the lower fixed piece 60. In the present embodiment, the lower easy break line 61, in which both end portions 61a and 61b are connected to the upper end portion and the side edge portion of the lower surface side flap 28b, forms a break portion 20e having a shape like, for example, halving an ellipse. It is provided along the outer circumference of the so as to be. The broken portion 20e is preferably large enough to accommodate the tip of the finger in order to improve the openability of the lower surface side flap 28b. For example, the vertical width is about 15 mm and the horizontal width is about 35 mm. Is preferable. Further, in the present embodiment, the break portion 20e surrounded by the lower easy break line 61 is provided at a portion close to the other front plate 11b into which the insertion flap 26a of the lower surface main flap 26 is inserted inward. .. Since the lower easy break line 61 is provided in a portion close to the other front plate 11b, it is possible to smoothly perform the operation of breaking the lower easy break line 61 and opening the lower surface side flap 28b. Become. Further, since the lower easy break line 61 and the break portion 20e are arranged at the corner portion where the rigidity of the packaging box 10 is high, even when the packaging box 10 is formed by a relatively thin blank 23, the lower easy break line 61 and the break portion 20e are arranged. It becomes easy to break along the lower easy break line 61 without bending.

In the present embodiment, the packaging box 10 can be easily assembled into a three-dimensional shape containing articles by a simple process using the above-mentioned blank 23, preferably using a known sealing device (box making machine). ..
In the present embodiment, when the article is housed inside the tubular main body 13 in which the lower surface portion 15 is closed, the opening of the upper end portion of the tubular main body 13 is opened by using a pair of upper surface side flaps 17a and 17b and an upper surface main flap 18. And block. Specifically, the upper surface side flap 17a connected to the upper side of the side plate 12a is bent inward via the folding curve 16a, and then the upper surface side flap 17b connected to the upper side of the side plate 12b is bent inward with the folding curve 16a. Bend inward through. Further, an insertion flap 18a connected to the tip of the upper surface main flap 18 via a folding curve 16c is inserted along the inner side surface of the upper end portion of the other front plate 11b, and the base ends of the pair of upper surface side flaps 17a and 17b. Each of the lock pieces 29 formed in the portion is locked. Then, the adhesive is applied to one surface which is the adhesive surface of the first upper fixed piece 21 which is connected to the upper surface side flap 17b and one surface which is the adhesive surface of the lower fixed piece 60 which is connected to the lower surface side flap 28b. After that, the first upper fixing piece 21 is bent through the folding curve 16d, and the first upper fixing piece 21 is adhered to the side plate 12a. Next, the lower fixing piece 60 is bent through the folding curve 16j, and the lower fixing piece 60 is adhered to the side plate 12a.
The step of applying the adhesive and the bonding step can be performed at the same time on the first upper fixing piece 21 and the lower fixing piece 60 to be bonded to the same one side plate 12a, and then by a crimping guide or a crimping roller. The crimping process can be performed efficiently and smoothly.
In addition, in order to facilitate the bonding step and the subsequent crimping step and increase the production efficiency, it is preferable that the first upper fixing piece 21 and the lower fixing piece 60 are bonded to the same side plate 12a.

To take out the packed article from the upper surface portion 14 of the packaging box 10, as shown in FIG. 22, the upper surface main flap 18 is opened and the upper surface main flap 18 is broken, and the broken portion 20a is broken by breaking along the first upper easy break line 22. Then, the fingertip can be inserted into the lower side of the upper surface side flap 17b from the position where the break portion 20a surrounded by the first upper easy break line 22 is located.
After that, if a force for lifting the upper surface side flap 17b is applied by the inserted fingertip, the upper surface side flap 17b can be easily opened, and the upper surface side flaps 17a and 17b on both sides are further opened. The article can be easily taken out from the upper surface portion 14 of the packaging box 10.

To take out the packed article from the lower surface portion 15 of the packaging box 10, the lower surface main flap 26 is opened and broken along the lower easy break line 61 to break the broken portion 20e and surrounded by the lower easy break line 61. The fingertip can be inserted into the lower side of the lower surface side flap 28b from the position where the broken portion 20e is located.
After that, if a force for lifting the lower surface side flap 28b is applied by the inserted fingertip, the lower surface side flap 28b can be easily opened, and the lower surface side flaps 28a and 28b on both sides are further opened. The article can be easily taken out from the lower surface portion 15 of the packaging box 10.

The packaging box 10 according to the fourth embodiment of the present invention configured in this way can also obtain the same effect as the packaging box 10 according to the first embodiment.

Further, according to the packaging box 10 according to the fourth embodiment, since the lower fixing piece 60 is adhered to the side plate 12a, it is possible to prevent mischief with respect to the contained article from the lower surface portion 15.
Further, according to the packaging box 10 according to the fourth embodiment, the lower surface portion 15 can be easily opened by breaking the lower easy break line 61, and the article is taken in and out even after the opening is once opened. However, the opening / closing operation can be smoothly performed, and the portion where the lower easy break line 61 is broken can be made inconspicuous in appearance so as not to spoil the aesthetic appearance.

(Other embodiments)
The present invention is not limited to the above embodiment, and various modifications can be made. For example, as shown in FIG. 24, a sealing seal for improving the degree of identification by adding the adhesive strength of the first upper fixing piece 21 attached to the side plate 12a and notifying that the packaging box 10 is unopened. It may be in the form in which 80 is attached. The sealing seal 80 is preferably in a form of being attached to at least one of the first upper fixing piece 21, the second upper fixing piece 50, and the lower fixing piece 60. The sealing seal 80 can take various shapes such as a rectangle, a trapezoid, a circle, an ellipse, and a polygon. By attaching the sealing seal 80, the effect of preventing tampering can be enhanced.

In the present embodiment, in the cut blank 23 shown in FIG. 25, except for the side plate 12a, the upper surface main flap 18 and the upper surface side flap 17b, the same as in FIG. 3 is substantially the same, and thus the description thereof will be omitted.
The side plate 12a, the upper surface main flap 18, and the upper surface side flap 17b of the blank 23 shown in FIG. 25 will be described below.

The side plate 12a is provided with a notch 76 that, when the seal 80 is peeled off, also peels off the paper on the surface of the side plate 12a, which makes it possible to identify unauthorized opening and makes it difficult to reseal.

The upper surface main flap 18 is provided with a notch 77 that, when the sealing seal 80 is peeled off, also peels off the paper on the surface of the side plate 12a, which makes it possible to identify unauthorized opening and makes it difficult to reseal.

The upper surface side flap 17b is provided with a first upper fixing piece 21 projecting from one end (for example, an end facing the folding curve 16a) and being connected to each other via the folding curve 16d. The folding curve 16d is preferably an easily broken line that has been perforated to separate the first upper fixed piece 21. Since it becomes difficult to open the first upper fixing piece 21 when the seal seal 80 is attached, the overhang without the seal seal 80 is attached so that the folding curve 16d can be easily broken and opened. It is preferable to have a portion. As the first upper fixing piece 21 having the overhanging portion 81, various forms as shown in FIGS. 26A to 26D can be adopted. By forming the first upper fixing piece 21 having the overhanging portion 81, even if the sealing seal 80 is attached on the first upper fixing piece 21, the folding curve 16d can be easily broken by turning over the overhanging portion 81 and pulling it. And the opening work can be easily performed.
Further, in the sealing seal 80 to be attached to the first upper fixing piece 21, it is preferable that the bending position corresponding to the position of the folding curve 16d is perforated. Even when the sealing seal 80 is attached to the first upper fixing piece 21, it can be cut at the perforation because the sealing seal 80 is perforated, and the opening operation can be easily performed. can.

The sealing seal 80 is preferably in a form in which perforations are provided at bending positions extending from the side plate 12a to the upper surface main flap 18. Further, as shown in FIG. 27, it is preferable that the sealing seal 80 is further provided with a perforation 82 at a position corresponding to the vicinity of the lower end of the first upper fixing piece 21. Since the seal seal 80 is provided with perforations, the seal seal 80 can be cut together with the first upper fixing piece 21, and the seal seal 80 can be easily peeled off.

The packaging box of the present invention is suitably used as a packaging box for accommodating cosmetics, chemicals, confectionery, stationery, and other articles.

10 ... Packaging boxes 11a, 11b ... Front plates 12a, 12b ... Side plates 13 ... Cylindrical body 14 ... Top surface 15 ... Bottom surfaces 16a to 16j ... Folded curves 17a, 17b ... Top surface side flaps 18 ... Top surface main flaps 18a ... Insertion Flaps 20a to 20e ... Broken portions 21,21a to 21d ... First upper fixed piece 22 ... First upper easy breaking line 23 ... Blank 24 ... Vertical folding curve 25 ... Adhesive joint piece 26 ... Lower surface main flap 26a ... Insert flap 27 ... Lock notches 28a, 28b ... Bottom side flap 29 ... Lock piece 36 ... Boundary line 37 ... Signboard 50 ... Second upper fixed piece 51 ... Top surface easy break line 52 ... Side easy break line 53 ... Second upper easy break Line 60 ... Lower fixed piece 61 ... Lower easy break line 70 ... Through hole 71 ... Cutout part 72 ... Cut 73 ... Embossed part 74 ... Step portion 76, 77 ... Cut 78 ... First seal part Easy break line 79 ... Second seal Easy-to-break line 80 ... Sealing seal 81 ... Overhanging part 82 ... Perforation 90 ... Adhesive notch 91 ... Adhesive part

Claims (6)

It is a hollow hexahedral packaging box provided with a pair of front and rear front plates, a pair of left and right side plates, an upper surface portion, and a lower surface portion.
The upper surface portion is folded so that the upper surface side flaps connected to the upper end portions of the pair of left and right side plates via a folding curve are folded inward so as to overlap each other, and the upper surface portion is folded at the upper end portion of one front plate. The upper surface main flaps connected via the above surface are folded, and the insertion flaps connected to the tip end portion of the upper surface main flaps via a folding curve are inserted inside the upper end portion of the other front plate.
Of the upper surface side flaps that overlap each other, one of the upper surface side flaps that is overlapped on the upper side is connected to the upper surface side flap via a fold curve, and protrudes from the fold curve of the other upper surface side flap, and the other upper surface side flap is A first upper fixing piece extending over the connected side plates is provided.
The first upper fixing piece is a packaging box adhered to the side plate. The upper surface side flaps overlapped on the upper side are provided with a first upper easy break line surrounding the folding curve of the first upper fixed piece, and both ends of the first upper easy break line are of the upper surface side flap. Both ends of the first upper easy break line connected to the edge provided with the first upper fixing piece or the end of the upper surface side flap provided with the first upper fixing piece and the end on the front plate side. The packaging box according to claim 1, which is connected to the edge. The upper surface main flap is provided with an upper surface easy break line corresponding to the first upper easy break line, and both ends of the upper surface easy break line are connected to side edges of the upper surface main flap or the upper surface easy break line. The packaging box according to claim 2, wherein both ends of the wire are connected to the folding curve of the insertion flap of the upper surface main flap and the side edge portion. A second upper fixing piece that projects laterally via a folding curve is provided on the side edge of the upper surface main flap.
The packaging box according to any one of claims 1 to 3, wherein the second upper fixing piece is adhered to the side plate together with the first upper fixing piece in a state where the upper surface portion is formed. The lower surface is folded so that the lower surface side flaps connected to the lower ends of the pair of left and right side plates via a folding curve are folded inward so as to overlap each other, and the lower surface is folded at the lower end of one of the front plates. The lower surface main flaps connected via the fold curve are folded, and the insertion flaps connected to the tip end portion of the lower surface main flaps via a folding curve are inserted inside the lower end portion of the other front plate.
Of the lower surface side flaps that overlap each other, one of the lower surface side flaps that are overlapped on the upper side is connected to the lower surface side flap via a fold curve, protrudes from the fold curve of the other lower surface side flap, and the other lower surface side flap lower portion fixing pieces ranging articulated the side plate is provided,
The packaging box according to any one of claims 1 to 4, wherein the lower fixing piece is adhered to the side plate. The packaging box according to any one of claims 1 to 5, which stands above the other front plate and is provided with a signboard portion.

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