JP5512203B2 - Packaging box - Google Patents

Description

  The present invention relates to a packaging box, and more particularly to a packaging box in which a lid plate is connected to an upper edge of a side plate on the back side so as to be foldable, and an upper opening is closed by the lid plate.

  For example, as described in Japanese Patent Application Laid-Open No. 2004-155478, a so-called wraparound case in which a continuous single cardboard base paper is folded into a rectangular tube shape and the openings at both ends are closed by side plates, A so-called packaging box is used as a packaging means for physical distribution.

  An example of the wraparound case will be described with reference to FIGS. 1 to 3. As shown in FIG. 1, the front side plate 10, the bottom plate 11, the back side plate 12, and the cover plate 13 are folded by a single cardboard base paper. The bending lines 14 are continuously formed so as to be bendable. Further, a joining piece 16 is formed on the front end side of the lid plate 13 via a fold line 15.

  On the other hand, side plate flaps 20 are formed on both ends of the front-side side plate 10 and the back-side side plate 12 of the corrugated cardboard via folding lines 19 respectively. On the other hand, auxiliary flaps 22 are formed on both sides of the bottom plate 11 and the cover plate 13 via bending lines 21, respectively. Then, the inner side surface of the corrugated cardboard is laterally extended from the front side plate 10 to the side plate flaps 20 on both sides and from the side plate 12 to the side plate flaps 20 on the rear side so as to be located approximately in the middle in the height direction. Extending in the direction, the cut tape 23 is bonded.

  A wraparound case having a rectangular parallelepiped shape as shown in FIG. 2 is assembled by the corrugated paper having such a structure. That is, the side plate 10 on the front side, the bottom plate 11, the side plate 12 on the back side, and the cover plate 13 are sequentially bent by a fold line 14 to form a square tube shape, and the side plate flaps 20 are opened at both the left and right sides by fold lines 19. The auxiliary flap 22 is bent by a fold line 21 and joined to the side plate flap 20.

  In such a packaging box, the lid plate 13 is opened and a predetermined article, for example, an individual packaging case 24 is accommodated therein, and the lid plate 13 is closed in this state. Then, the joining piece 16 on the front end side of the lid plate 13 is overlapped with the front surface of the side plate 10 on the front side by the fold line 15, and the joining piece 16 is glued to the upper edge side of the side plate 10 on the front side. In the case of opening, in particular, as shown in FIG. 3, the cut tape 23 attached to the side plate flaps 20 on both sides from the inner surfaces of the front side plate 10 and the back side plate 12 is pulled, thereby the side plate flap 20. The side plate 10 on the front side and the side plate 12 on the back side are cut at intermediate positions in the height direction. As a result, the packaging box is vertically divided into two in the middle in the height direction. By removing the upper part, the individual packaging case 24 housed inside is exposed as shown in FIG. To do.

  Such a conventional wrap-around case needs to increase the material strength of the cardboard for assembling the wrap-around case when the weight of the contents such as the individual case 24 increases, and the end of the cut tape 23 And a larger force is required for cutting the front side plate 10, the rear side plate 12 and the side plate flap 20. In addition, as shown in FIG. 3, the individual packaging case 24 can not be taken out unless the packaging box is divided into two vertically, and when the half-packaged packaging case 24 remains in the packaging box, The individual case 24 cannot be stored in a hygienic state and may be soiled. There is also a problem that the packing state at the time of storage becomes unstable.

  The microfilm of Japanese Utility Model Laid-Open No. 2-80529 is provided with a front side wall, a bottom wall, a rear side wall, and a lid wall connected to each other through a fold line, and wall flaps are provided on both sides of each wall via a fold line. The wall flaps are separated from each other by a score line, the wall flaps on both sides of the bottom wall are provided with glued portions, the wall flaps on both sides of the lid wall are provided with zippers, and the outside of the zipper is used as the glued portions. In addition, a carton is disclosed in which a folding line and a zipper are provided at the edge of the lid wall, and a flap having a glued portion on one side is extended.

  Such a carton can open the opening on the upper surface side by cutting a folding line between the lid wall and a flap connected to the front edge of the lid wall. Therefore, when contents such as an individual case remain, the lid wall can be closed again and stored.

  However, this type of wrap-around case has a drawback in that it is inferior in strength, particularly in pressure resistance (compression) strength in the height direction, because the height dimension of the flap on the front edge side of the lid wall is small. Although the upper opening is exposed when the lid wall is open, the upper edge of the front wall is at the same height as the upper edge of the box. There is a disadvantage that it is difficult to grasp the packaging case.

JP 2004-155478 A Japanese Utility Model 2-80529 microfilm

  An object of the present invention is to provide a packaging box in which a force required for opening is small.

  Another object of the present invention is to provide a packaging box in which such individual cases can be stored in a sanitary manner when a large number of individual cases remain inside.

  Yet another object of the present invention is to provide a packaging box that does not require a cut tape for opening to be joined to the inner surface, thereby reducing the number of parts and reducing the cost. is there.

  Yet another object of the present invention is to provide a packaging box that is less susceptible to deterioration in strength even when a fracture line is formed, thereby enabling the packaging quality to be ensured.

  The above-described problems and other problems of the present invention will be made clear by the technical idea of the present invention described below and the embodiments thereof.

The main invention of the present application is that a lid plate is connected to the upper edge of the back side plate so that it can be bent, and a joining piece is connected to the front end side edge of the lid plate via a break line, It is a packaging box in which a piece is glued to the upper part of the front side plate and joined.
A breaking line extending in the lateral direction is formed at an upper portion of the side plate on the front surface side and glued to the joining piece, and an interval in the height direction between the breaking line and an upper end of the side plate on the front surface side is formed. It is smaller than the dimension in the height direction of the joining piece, and the lower edge of the joining piece is located below the breaking line of the side plate on the front side ,
A longitudinal notch is formed at the end of the breaking line of the front side plate, and the upper part of the breaking line of the front side plate is broken together with the joining piece from the longitudinal cut.
A notch is formed at the side edge of the joining piece and at the side edge of the longitudinal cut side of the front side plate, and the side edge of the joining piece is shortened in the lateral direction by the notch. It relates to a packaging box.

Here, the vertical cut is formed in a corner portion of the front side plate and a side plate flap that is foldably connected to the front side plate, and the lower end of the cut is connected to the breaking line. In addition, a portion on the front side of the cut and above the break line of the side plate on the front side may form a knob piece. The front side plate and the bottom plate, the back side plate, the lid plate, and the joining piece are foldably connected to each other, and the front side plate and the back side are assembled. Side plate flaps connected to both side ends of the side plate are abutted with each other to close the side opening, and auxiliary flaps connected to both side ends of the bottom plate and the cover plate are abutted with each other on the side plate flap. In this state, it may be joined to the side plate flap.
Further, a plurality of individually packaged cases containing a drink, liquid food, fermented milk, tofu or the like liquid, solid, or gel-like food or drink may be stored. A beverage, liquid food, liquid milk, fermented milk, or tofu-containing food, beverage or food product that is housed in an individual case and the individual case is stored in any of the packaging boxes described above. It may be.

The main invention of the present application is that a lid plate is connected to the upper edge of the back side plate so that it can be bent, and a joining piece is connected to the front end side edge of the lid plate via a break line, It is a packaging box in which a piece is glued to the upper part of the front side plate and joined.
A breaking line extending in the lateral direction is formed at an upper portion of the side plate on the front surface side and glued to the joining piece, and an interval in the height direction between the breaking line and an upper end of the side plate on the front surface side is formed. It is smaller than the dimension in the height direction of the joining piece, and the lower edge of the joining piece is located below the breaking line of the side plate on the front side ,
A longitudinal notch is formed at the end of the breaking line of the front side plate, and the upper part of the breaking line of the front side plate is broken together with the joining piece from the longitudinal cut.
A notch is formed at the side edge of the joining piece and at the side edge of the longitudinal cut side of the front side plate, and the notch shortens the side edge of the joining piece in the lateral direction. is there.

  Therefore, according to such a packaging box, the lid plate can be opened and the contents taken out by breaking together the joining piece and the breaking line of the front side plate. Moreover, since the lid plate is in a state of being foldably connected to the upper edge of the side plate on the back side in the opened state, if the contents such as the individual packaging case remain, the lid plate By closing again, the contents can be stored hygienically. In the opened state, in the upper edge portion of the side plate on the front side, the portion above the break line is removed, so that the contents can be easily taken out. Furthermore, since the lower edge of the joining piece joined to the breaking line portion of the front side plate extends to the lower side of the breaking line, the pressure resistance is high, without using a strong material, It becomes possible to provide a packaging box excellent in strength.

It is an expansion | deployment top view of the conventional wraparound case. It is a perspective view of the assembly state of the wraparound case. It is a perspective view which shows the state of opening of the wraparound case. It is an expansion | deployment top view of the wraparound case which concerns on one embodiment of this invention. It is a perspective view which shows the assembly operation | movement of the wraparound case. It is a perspective view of the assembled state. It is the principal part expansion front view. It is the sectional view on the AA line in FIG. It is a principal part perspective view which shows the structure of the edge part of a joining piece and a fracture line. It is the principal part expanded horizontal sectional view. It is a principal part perspective view which shows operation | movement of opening. It is a perspective view in the state where a lid was half opened.

  FIG. 4 is a developed plan view of the corrugated base paper 30 for assembling the wraparound case according to the present embodiment. The corrugated cardboard 30 includes a front side plate 31, a bottom plate 32, a back side plate 33, and a lid plate 34, and these plate-like portions can be folded together via three folding lines 35 that are parallel to each other. It is connected to. Further, a joining piece 36 can be bent by a zipper-like break line 37 at the end of the lid plate 34 and is connected to be breakable.

  Side plate flaps 40 are foldably connected to both sides of the front side plate 31 via a fold line 41. Further, side plate flaps 42 are connected to both sides of the rear side plate 33 so as to be foldable via a fold line 43. On the other hand, auxiliary flaps 44 are connected to both sides of the bottom plate 32 via a folding line 45 so as to be bendable. Further, auxiliary flaps 46 are connected to both sides of the lid plate 34 via a break line 47 so as to be bent. On the auxiliary flaps 44 on both sides of the bottom plate 32 and the auxiliary flaps 46 on both sides of the lid plate 34, two fold lines each having an angle of 45 degrees are arranged in a “C” shape.

  A zipper-shaped break line 52 extending in the lateral direction is formed at the upper end of the front side plate 31. As the position of the break line 52, the right end side of the break line 52 ends with a vertical cut 53, and the opposite end of the break line 52 ends with a vertical cut 54. The vertical cut 54 on the left end side is formed at the corner of the front side plate 31 and the side plate flap 40, whereas the vertical cut 53 on the right side is formed on the front side plate 31 and the side plate flap. 6 is formed so as to enter the side plate flap 40 side rather than the corner portion with 40, and when assembled, as shown in FIG. 6, the notch 53 is curved at the corner between the side plate 31 on the front side and the auxiliary flap 46. It is the terminal of the part and is located on the side plate flap 40 side. On the other hand, in the upper part of the breaking line 52, the joining piece 36 of the lid plate 34 joined to the front side plate 31 includes a notch 55, and the notch 55 causes the breaking line 52 of the front side plate 31 to break. It is shorter than the upper part. The joining piece 36 is glued by the front side plate 31 and the glued portion 57 in the region above the breaking line 52 (see FIG. 8). As shown in FIG. 4, a stepped portion 58 is formed at the side end of the auxiliary flap 46, and in particular, a portion above the break line 52 of the front side plate 31 and above the longitudinal cut 53. Trying to escape.

  Next, an operation of assembling a wraparound case using the corrugated base paper 30 having the above configuration will be described. A cardboard base paper 30 shown in FIG. 4 is bent at a fold line 35 and assembled into a rectangular tube shape by a front side plate 31, a bottom plate 32, a back side plate 33, and a lid plate 34. Then, as shown in FIG. 5, the side plate flaps 40 on both sides of the front side plate 31 and the side plate flaps 42 on both sides of the back side plate 33 are bent at right angles at folding lines 41, 43, respectively. The end portions of the side plate flaps 40 and 42 are brought into contact with each other to close the side opening. Further, the auxiliary flaps 44 on both sides of the bottom plate 32 are bent at the folding line 45 and the auxiliary flaps 44 are joined to the side plate flaps 40 and 42.

  In this manner, a wraparound case having a substantially rectangular parallelepiped shape is assembled. Various articles are stored in such a wrap-around case. For example, a plurality of individual packaging cases 60 are accommodated. Then, as shown in FIG. 6, in this state, the lid plate 34 is folded at the folding line 35 to close the upper opening. And the auxiliary | assistant flap 46 of the both ends of the cover board 34 is bend | folded below at the fracture | rupture line 47, and it joins and glues on the side board flaps 40 and 42 of both sides. Further, the joining piece 36 on the front end side of the lid plate 34 is bent at a right angle at the breaking line 37, and this joining piece 36 is glued to the upper edge of the front side plate 31 and above the breaking line 37. And join. As a result, the box is closed with the cover plate 34 closing the upper opening. Accordingly, the individual packaging case 60 and the like are packed in this way and used for logistics.

  Next, the operation of opening the packaging box containing the contents such as the individual packaging case 60 packed as described above will be described. As shown in FIGS. 7 to 11, this unsealing operation is performed by pinching the end portion defined by the longitudinal notch 53 at the upper end of the front side plate 31 on the right side of the breaking line 52. It is broken by this. Here, in particular, the upper side of the breaking line 52 of the side plate 31 on the front side, and the vertical cut 53 is applied to the corner portion between the side plate 31 and the side plate flap 40 on the front side, and the elasticity Thus, a portion above the breaking line 52 and having a longitudinal cut 53 formed at the tip protrudes outward. Therefore, the opening operation is performed by pinching such a portion with a finger and pulling it toward the front.

  In the present embodiment, for example, the vertical cut 53 is pinched and pulled from right to left. At this time, on the right end side (the first place to pinch) of the zipper-like break lines 52 and 37, the perforation interval (width) is set larger than the other places with a weak force at the first place of the break line. This is preferable because it can be easily broken. Here, assuming the right-handedness that is common among Japanese people, an unsealing method is provided to pinch with the right hand and pull it from the right to the left. This opening method is provided because it is easier to produce a strong force by pulling (pulling) the cardboard from the right to the left as the force to cut and open the cardboard.

  As shown in FIG. 8, the joining piece 36 and the front side plate 31 are joined to each other at the glued portion 57 in the region above the breaking line 52 of the front side plate 31. Therefore, when the end of the vertical cut 53 is pinched and pulled forward as shown in FIG. 11, the upper portion of the front side plate 31 is broken by the break line 52. At the same time, the joining piece 36 joined to the upper side of the breaking line 52 by the glued portion 57 is broken together at the breaking line 37 of the connecting portion with the lid plate 34. Accordingly, when the upper edge of the front side plate 31 is completely cut in the transverse direction by the breaking line 52, the front edge portion of the lid plate 34 is separated from the front side plate 31. After that, when the front edge portion of the lid plate 34 is pulled upward, the lid plate 34 is broken at both sides of the lid plate 34 and at the portion of the breaking line 47 between the auxiliary flap 46. Opening is performed as shown in FIG. Therefore, in this state, the cover plate 34 is opened, and the internal packaging case 60 and the like can be taken out arbitrarily. At this time, since this packaging box is opened not only at the upper opening but also at the upper part of the breaking line 52 of the side plate 31 on the front side, it is convenient for taking out the individual case 60 and the like. That is, when the side plate 31 on the front side extends to the upper edge of the box, it is difficult to put a finger on the individual case 60, but it is exposed to the portion of the break line 52. Removal is very easy. Therefore, this packaging box is particularly suitable when the contents of the individual case 60 are heavy, for example, liquids such as beverages, liquid foods, fermented milk, tofu, etc. Suitable for products.

  At this time, the shape of the breaking line 52 may be linear or curved, and may be, for example, a wavy line or a zigzag. In addition, from the viewpoint of the pressure resistance of the packaging box and the ease of taking out the individual packaging case 60, the portion of the break line 52 is preferably at least one half position from the upper side in the longitudinal direction of the packaging box. One or more positions are more preferable, and a quarter position or more are more preferable.

  Thus, the wrap-around case type packaging box of the present embodiment is in a state where the lid plate 34 is foldably connected to the side plate 33 on the back side even when the lid plate 34 is opened. Therefore, when storing in the state where the individual packaging case 60 or the like remains, the internal packaging case 60 can be protected. Further, by completely closing the lid plate 34 at this time, it becomes possible to hygienically store the fractional case 60. Further, the opening operation is performed by breaking the breaking line 52 of the front side plate 31 and the breaking line 37 of the front end side of the lid plate 34. Here, each of the break lines 52 and 37 is a zipper-type break line. Furthermore, the break lines 47 on both sides of the cover plate 34 are also formed of zipper-type break lines. Therefore, it is possible to make it difficult to be affected by the tear strength due to the material of the corrugated base paper 30 when opening by breaking. Further, since the rupture is caused by the zipper-type break lines 52, 37, 47, less force is required at the time of opening.

  Further, in the packaging box of this embodiment, the dimension in the height direction of the joining piece 36 on the front end side of the lid plate 34 is formed on the upper edge in the height direction of the side plate 31 on the front side and the side plate on the front side. Since the lower edge of the joining piece 34 is located below the breaking line 52 and is larger than the gap in the height direction between the breaking line 52 and the breaking line 52, the side plate 31 extends laterally on the front side. Even if the cutting line 52 is formed, the deterioration in strength in the vertical direction is reduced, and the packaging box is excellent in pressure resistance. In particular, even if the zipper-type break line 52 is formed, the pressure resistance is high and the packaging quality can be ensured.

  In the packaging box of the present embodiment, as is apparent from FIG. 4, it is not necessary to apply a cut tape in advance to the breaking position of the corrugated base paper 30, and the cut tape can be discarded. Accordingly, no extra parts are required, which enables cost reduction.

  While the present invention has been described above with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

  For example, various changes in the vertical and horizontal dimensions and the height direction in the above-described embodiment can be made according to the contents such as the individual case 60 to be packed. Moreover, the packaging box of this Embodiment is widely applicable to packing various contents and using for distribution.

(Example 1) Examination of pressure resistance of packaging box: Product (Brick pack 1000mL)
・ Pressure resistance (compression) strength of packaging box without product: In case of empty box The pressure resistance of the packaging box was measured without 1000mL brick pack (product).

Pressure resistance of conventional product (Fig. 2) = 3077 N
Pressure resistance of invention (Fig. 6) = 2840 N
In the case of a packaging box without a product, the pressure resistance was the same between the conventional product and the invention product.

  Brick pack (1000 mL) x 6 = Calculation for load of 1 box (7.3 kg). In the case of stacking 6 pallets, the load at the bottom (6) is 36.5 kg for 5 (box). Here, 36.5 kg × 9.81 N / kg = 358 N.

Safety factor of the conventional product (Fig. 2) = 3077 N ÷ 358 N = 8.6 times Safety factor of the invention product (Fig. 6) = 2840 N ÷ 358 N = 7.9 times The lowest level (8 steps) when loading 8 pallets Then, the load is 51.1 kg for 7 steps (boxes). Here, 51.1 kg × 9.81 N / kg = 501 N.

Safety factor of conventional product (Fig. 2) = 3077 N ÷ 501 N = 6.1 times Safety factor of invention product (Fig. 6) = 2840 N ÷ 501 N = 5.7 times In the case of a packaging box without product, The safety factor was equivalent.
-Pressure resistance (compression) strength of packaging boxes with products: In the case of filling boxes The pressure resistance of the packaging box was measured with 1000 mL brick pack (product).

Pressure resistance of conventional product (Fig. 2) = 4040 N
Pressure resistance of invention (Fig. 6) = 3870 N
In the case of a packaging box with a product, the compressive strength was the same between the current product and the invention product.

  Brick pack (1000 mL) x 6 = Calculation for load of 1 box (7.3 kg). In the case of stacking 6 pallets, the load at the bottom (6) is 36.5 kg for 5 (box). Here, 36.5 kg × 9.81 N / kg = 358 N.

Safety factor of conventional product (Fig. 2) = 4040 N ÷ 358 N = 11.3 times
Safety factor of the invention (Fig. 6) = 3870 N ÷ 358 N = 10.8 times In case of 8 pallet stacking, the load on the bottom (8th) is 51.1 kg for the 7th (box). Here, 51.1 kg × 9.81 N / kg = 501 N.

Safety factor of conventional product (Fig. 2) = 4040 N ÷ 501 N = 8.1 times
Safety factor of the invention (Fig. 6) = 3870 N ÷ 501 N = 7.7 times In the case of a packaging box with a product, the safety factor was the same between the current product and the invention.

From the above experimental results, it was found that the pressure resistance of the invention product decreased by about 4.2% compared to the conventional product. However, in the case of packaging boxes with products, the safety factor was 10 times or more, and it was judged that there was no problem in distribution.
(Example 2) Examination of opening load force of packaging box: Product (Brick pack 1000mL)
The opening load force of a 1000 mL brick pack (product) packaging box was measured. The evaluation method of the opening load force is as follows. The opening load force is a numerical value evaluated by relatively comparing.

(1) Measure the opening force with a push-pull gauge. (N)
(2) Measure the distance to which the opening load force is applied. (cm)
(3) Opening load force = Opening force x Distance (Calculated) (N · cm)
(4) All the numerical values of the unsealed locations are summed to obtain the unsealing load force of the packaging box. (N · cm)
Opening load force of the conventional product (Fig. 2) = 5340 N · cm = 120 N · cm + 5220 N · cm
(Flap peeling = 30 N × 1 cm × 4 locations = 120 N · cm)
(Cut tape tear = 60 N × 43.5 cm × 2 locations = 5220 N · cm)
Opening load force of invention (Fig. 6) = 2145 N · cm = 1425 N · cm + 720 N · cm
(Flap peeling = 50 N × 28.5 cm × 1 location = 1425 N · cm)
(Perforation breaks = 30 N × 12 cm × 2 locations = 720 N · cm)
From the above experimental results, it was found that the opening load force of the invention product (2145 N · cm) was reduced to less than half compared to the conventional product (5340 N · cm).

  Conventional products have high strength to cut the cut tape, and the distance to cut is long, so the load becomes large. In fact, the cut tape is not used and the product is often taken out by opening the side of the box. And in a conventional product, after opening a box main body, it isolate | separates apart, an assembly part is scattered, and the external appearance of storage worsens. At this time, when the shape of the box body is not stable during storage, and the number of products in the box decreases, the shape of the box body is often not retained.

  On the other hand, in the invention product, the procedure required for opening the box body is reduced as much as possible, and when peeling the flap on the front of the box, the width of the flap is widened so that the opening functionality is better than the numerical value. Has been. In the invention, the appearance of storage is good even after the box body is opened, and the shape of the box body is maintained.

  As is clear from Example 1 and Example 2, the wraparound type cardboard packaging box improved the unsealing property and ensured the strength and the like. In the storage after opening the box body, the hygiene inside the box has been improved. Cut tape is no longer required, reducing packaging costs.

  The present invention can be widely used as a packaging box for packing various articles for physical distribution.

DESCRIPTION OF SYMBOLS 10 Front side plate 11 Bottom plate 12 Back side plate 13 Lid plate 14, 15 Folding line 16 Joining piece 19 Folding line 20 Side plate flap 21 Folding line 22 Auxiliary flap 23 Cut tape 24 Individual case 30 Corrugated paper 31 Front Side plate 32 Bottom plate 33 Side plate 34 Back plate 35 Folding line 36 Joint line 37 Break line 40 Side plate flap 41 Fold line 42 Side plate flap 43 Bend line 44 Auxiliary flap 45 Bend line 46 Auxiliary flap 47 Break line 48 Folding line 52 Breaking line 53, 54 Longitudinal cut 55 Notch 57 Glued part 58 Step part 60 Individual case

Claims (5)

A lid plate is connected to the upper edge of the rear side plate so that it can be bent, and a joining piece is connected to the front end side edge of the lid plate via a break line, and the joining piece is connected to the front side plate. A packaging box that is glued to the top and joined.
A breaking line extending in the lateral direction is formed at an upper portion of the side plate on the front surface side and glued to the joining piece, and an interval in the height direction between the breaking line and an upper end of the side plate on the front surface side is formed. It is smaller than the dimension in the height direction of the joining piece, and the lower edge of the joining piece is located below the breaking line of the side plate on the front side ,
A longitudinal notch is formed at the end of the breaking line of the front side plate, and the upper part of the breaking line of the front side plate is broken together with the joining piece from the longitudinal cut.
A notch is formed at the side edge of the joining piece and at the side edge of the longitudinal cut side of the front side plate, and the side edge of the joining piece is shortened in the lateral direction by the notch. Characteristic packaging box. The longitudinal cut is formed in a corner portion of the side plate on the front side and a side plate flap that is foldably connected to the side plate on the front side, and the lower end of the cut is connected to the breaking line, a top side of the break line on the front side of the side plate, the packaging box according to claim 1, characterized in that the portion of the front side of the cut to form a knob piece.   Assembled from a single continuous cardboard, the front side plate and bottom plate, the back side plate, the lid plate and the joining piece are foldably connected, the front side plate and the back side plate Side plate flaps connected to both ends of the side plate are butted against each other to close the side opening, and auxiliary flaps connected to both sides of the bottom plate and the lid plate are butted against each other on the side plate flap. The packaging box according to claim 1, wherein the packaging box is joined to the side plate flap in a state. The packaging box according to any one of claims 1 to 3, which stores a plurality of individual packaging cases containing drinks, liquid foods, fermented milk, tofu and other liquid, solid, or gel-like foods and drinks. . A liquid, solid, or gel made of beverage, liquid food, fermented milk, or tofu that is housed in an individual case and the individual case is stored in the packaging box according to any one of claims 1 to 3. Food and drink.

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