JP4723968B2 - Packaging box - Google Patents

Description

  The present invention relates generally to paper packaging boxes, typically containing trays containing curry or stew roux in two stacks and remaining after one tray has been used. The present invention relates to a packaging box that can be converted into a single-stage box suitable for housing a tray of stages.

  Patent Document 1 discloses a tray that accommodates a rail. This curry tray is formed with a plurality of luo accommodating portions, and each luo accommodating portion accommodates a single luo. This curry tray can be cut for each of the roux storage units. Therefore, when cooking the curry, it is possible to take out the curry roux for the number of people to be made, and to separate and discard the empty roux containing portion.

  Patent Document 2 discloses a packaging box that can change the lateral length in half according to the weight loss of the contents.

  Patent Document 3 discloses a packaging box in which the lateral length can be changed to 2/3 or 1/3 according to the weight loss of the contents.

Patent Document 4 discloses a packaging box capable of reducing the height dimension in accordance with the reduction of the contents. That is, Patent Document 4 discloses an invention in which the height dimension is halved by discarding half of the packaging box by cutting along the weakening line.
JP 2000-203553 A Registered Design Gazette No. 1216939 Registered Design Gazette No. 1217408 JP 2002-211151 A

  Among the packaging boxes, a packaging box is known in which the contents are accommodated in a state where the contents are stacked in two upper and lower stages. By the way, various designs such as trademarks, cautions, and handling methods are printed on the surface of the packaging box. From this, as seen in Patent Document 4, it is not preferable to cut off a part of the packaging box in order to make the packaging box small.

  The present invention relates to a packaging box that accommodates the contents in a state where the contents are stacked in two upper and lower stages, rather than reducing the lateral length dimension found in Patent Documents 1 to 3. The object is to provide a novel packaging box which is converted into a single-stage box suitable for containing one content remaining after taking out one of the contents.

  A further object of the present invention is not only to cut a part of the packaging box, but also to change it to a one-stage box with the height dimension halved while leaving all of the packaging box. An object of the present invention is to provide a packaging box that can be opened and closed in a state.

Such a technical problem, according to the onset Akira,
One stage of a size suitable for accommodating the remaining contents after taking out one contents from a packaging box that can accommodate two contents that are substantially circular in plan view. A rectangular packaging box that can be transformed into a box,
The bottom of the rectangle;
Four sidewalls extending upward from the bottom;
A rectangular ceiling connected to the upper ends of the four side walls,
Of the four side walls, a broken line provided on a pair of side walls facing each other and provided in the middle of the side walls in the height direction;
Among the four side walls, including a weakening line extending along the side portion of the ceiling portion from the height direction intermediate portion of the other pair of side walls different from the pair of opposite side walls provided with the broken line ,
The weakening line has an inclined weakening line part that leaves a corner part of the ceiling part,
A flap including the ceiling portion is formed by cutting along the weakening line, and a lid capable of opening and closing the first-stage box is formed by the flap and formed by cutting the inclined weakening line portion. It is achieved by providing a packaging box characterized in that a corner area to be processed is located in the vicinity of the periphery of the substantially circular content in plan view .

  According to the present invention, it is possible to change to a single-stage box without cutting a part of the packaging box by cutting along the weakening line as in Patent Document 4.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Before describing the packaging box of the embodiment, the contents accommodated in the packaging box will be described with reference to FIG.

  FIG. 1 shows a tray accommodated in the packaging box of the embodiment. The tray 1 shown in the figure is a plastic tray having a substantially circular shape in plan view that is sized to be placed on the palm of an adult. The tray 1 includes five sections 2 in a substantially triangular shape in plan view that are open upward. Is formed. Each compartment 2 accommodates, for example, one person's roux (not shown). The roux is a roux such as liquid, powder, solid curry or stew, but is typically a solid curry roux. An upper end flange 3 surrounding each section 2 of the tray 1 is provided with a weakening line 4 such as a perforation between adjacent sections 2 and 2, and by cutting along the weakening line 4, an arbitrary section 2 can be formed. Can be separated. In the tray 1, all of the compartments 2 are sealed by a peelable sheet (not shown) after the roux is accommodated in all of the five compartments 2. The sheet is provided with a weakening line corresponding to the weakening line 4 of the tray 1 described above, whereby when the sheet is separated from any section 2, the section 2 is separated in a state of being sealed with the sheet. Can do. The tray 1 is accommodated in, for example, a packaging box 10 illustrated in FIG. 2 in a state where the tray 1 is vertically stacked. For example, when all the compartments 2 in one tray 1 have been used, the height of the packaging box 10 is increased. It is possible to accommodate only the tray 1 remaining in this one-stage packaging box by changing it to a one-stage packaging box whose thickness is halved.

  An example of a packaging box that accommodates the tray 1 in a two-tiered state is shown in FIG. The packaging box 10 has a square shape when viewed in plan, as can be readily seen from FIG. 2, but if the contents to be accommodated are rectangular when viewed in plan, the packaging box 10 is flat. It may have a rectangular shape when viewed.

  The packaging box 10 has a height dimension H that is substantially twice the height dimension h of the tray 1 (H = about 2 × h). FIG. 3 is a development view of the packaging box 10. Referring to FIG. 3, the packaging box 10 includes four side wall portions 12 to 15 provided around the ceiling portion 11, folding margins 17 and 18 provided on both sides of the bottom portion 16, and the bottom wall 16. Adhesive margin 19 provided at the end, folding margins 20 and 21 provided on both sides of the intermediate side wall portion 12 between the bottom portion 16 and the ceiling portion 11, and the side wall portion 15 located at the end of the ceiling portion 11. Folding allowances 22 and 23 are formed on both sides.

  The contents are packaged from the material developed from the packaging box 10 through two stages. In the first step, an adhesive is applied to the glue margin 19 located at the end of the bottom wall 19, and then this glue margin 19 is adhered to the side wall 15 located at the edge of the ceiling portion 11 to form a ring shape. Make it crushed. In the next second step, while expanding the squeezed ring-shaped material, the tray 1 stacked in two stages is put therein, the folding margins 20 to 23 of the side wall portions 12 and 15 are folded, and then the bottom portion The folding margins 17 and 18 on both sides of 16 are folded (FIG. 4). Next, as shown in FIG. 5, after the hot melt adhesive B is applied on the folding margin 17 (18) (FIG. 5), the side wall portions 13 and 14 are bent, and this is folded with the hot melt adhesive B. 17 (18). Thus, the sealed packaging box 10 is obtained in a state where the trays 1 are stacked in two stages.

  As another example of the typical packaging box 10 described above, a packaging box 30 shown in FIG. 6 is known. The packaging box 30 in FIG. 6 is a box of a type in which the opening at both ends is closed with flaps 31 and 32. When this packaging box 30 is adopted, the trays 1 and 2 of the two-tiered stack are placed in the box 30 after the box 30 is assembled. It is put inside, and then the folded pieces 31a, 32a of the flap 31 or 32 are inserted, and the two trays 1 are packed in a state where they are stacked one above the other.

  FIG. 7 shows another example of a typical packaging box. The packaging box 40 shown in FIG. 7 has folded pieces 43 and 44 at the tip ends of flaps 41 and 42 that close both end openings, and the lips 43a and 44a of the folded pieces 43 and 44 are formed on the bottom 45 of the packaging box 40. It is a box of the type which closes by inserting in the formed slits 46 and 47.

  FIG. 8 shows another example of a typical packaging box. The packaging box 50 shown in FIG. 8 has a bottom portion 16 and side wall flaps 51 connected to the bottom portion 16 and is sealed by joining the ends of the side wall portions 51 with hot melt adhesive B. The packaging box 50 can be opened by cutting the weakening line 52 of the side wall flap 51, and the lid after opening can be fixed by inserting the lip 53 formed thereby into the slit 54. .

  Accommodates two trays 1, 1 For example, after removing one tray 1 from the typical packaging box 10, 30, 40, 50 described above, the packaging box is just used to accommodate the remaining one tray 1. Various methods can be considered as a method for changing to a single-stage box having a good height.

  In FIG. 9, the user can insert the weakening lines 25 to 28 into the side wall portions 12 to 15 of the packaging box 10 (FIG. 2) so that the height dimension of the side wall portions 12 to 15 becomes 1/2, for example. After using the luws of all the compartments 2 in one tray 1, cut along the weakening lines 25 to 28 formed in the four side wall portions 12 to 15, as shown in FIG. It can change into the half box 10a, 10b provided with the side wall of h, and the remaining one tray 1 can be accommodated in any one half box 10a or 10b. 2 and 3 are shown in a state in which weakening lines 25 to 28 are added to the four side wall portions 12 to 15. As an example of this modification, although illustration is omitted, for example, a broken line is provided instead of the weakening lines 26 and 27 of the side wall parts 13 and 14 in FIG. You may make it bend | fold inside the half box 10b along.

  If the above-described flaps 41 and 42 with the lips 43a and 44a and the slits 46 and 47 are used to change to a single-stage box that accommodates only one tray 1, the bottom 16 is shown in FIG. Alternatively, the weakening line 60 and the broken line 61 may be provided, while the side wall parts 12 to 15 may be provided with the broken line 62 while the ceiling part 11 may be provided with the slit 63. According to this, the bottom 16 of the packaging box 10 containing the two trays 1, 1 is cut along the weakening line 60 to take out one tray 1. When all the compartments 2 of the tray 1 have been used, the side walls 13 to 15 of the ceiling portion 11 are folded along the folding line 62 into the half box (FIG. 11) to accommodate one tray 1. It becomes a convenient one-stage box 10Aa. When the remaining tray 1 is accommodated in the first-stage box 10Aa, the lip 64 formed on the bottom 16 is inserted into the slit 63 to form a first-stage box 10Aa with a flap (FIG. 12). As a modified example, if the slit 63 is not provided in the ceiling part 11 but is provided at the boundary between the ceiling part 11 and the side wall part 15, as illustrated in FIG. 13, the bottom part corresponds to this. What is necessary is just to design the aspect of 16 weakening lines 60.

  For example, in order to change the packaging box 30 of FIG. 6 into a single-stage box that accommodates only one tray 1, a plurality of broken lines 35 are provided on a pair of side walls 33, 34 facing each other, The height of each of the side walls 33 and 34 may be reduced by forming a bellows (FIGS. 14 and 15). According to this, when one tray 1 is taken out from the packaging box 30A of FIG. 14 and all the compartments 2 of the tray 1 have been used, a part of the pair of side walls 33 and 34 is cut off using the weakening lines. By bending along the broken line 35 instead of the box 30Aa, the height of the box 30Aa can be changed to half the height, and the flaps 31, 32 are cut along the weakening line 37. It is preferable to form the lips 43a and 44a and insert the lips 43a and 44a into the slits 46 and 47 so that the lid of the single-stage box can be fixed.

  In the above description, a flap is formed by partially cutting using some means for changing the height of the side wall in half and a weakening line, and this flap constitutes the opening / closing lid of the single-stage box By arbitrarily combining some means, the height of the packaging box in which the tray 1 is sealed in a two-tiered state can be changed in half, which is shown in FIGS. The present invention can be applied to any packaging box exemplified in the above.

Reference Example 1 (FIGS. 16 and 17) :
The packaging box 100 of Reference Example 1 shown in FIGS. 16 and 17 has the same basic configuration as the packaging box 10 of the development shown in FIG. As shown in FIG. 16, a weakening line 101 is formed on the bottom 16 of the packaging box 100 so as to reach the side walls 13, 14 facing each other across the bottom, and the other pair of side walls 12, 15 has A broken line 102 is formed at a 1/2 height position, and by cutting off the shaded portion in FIG. 16, a pair of side walls 12, 15 and a part of the bottom 16 is formed as shown in FIG. The first-stage box 100a having the flaps 103 and 104 can be made. The flaps 103 and 104 have lips 103a and 104a at their tips. By inserting the lips 104a (or 103a) into the corresponding slits 105 (or 106), the flaps 103 and 104 can be opened to the side of the single-stage box 100a. The tray 1 (not shown) can be accommodated in the accommodated state.

According to the reference example 1, the first-stage box 100a can be made with the ceiling portion 11 left as it is, so that even if the first-stage box 100a is formed, the mark or caution printed on the surface of the ceiling section 11 There is an advantage that writing is not damaged. Moreover, since there is no broken line or weakening line in the ceiling part 11, there is an advantage that the appearance of the packaging box 100 is good.

Reference Example 2 (FIGS. 18 to 20) :
The packaging box 150 of the reference example 2 illustrated in FIGS. 18 to 20 has the same basic configuration as the packaging box 10 of the development shown in FIG. As can be understood from the developed view of FIG. 18, the packaging box 150 includes three side wall portions 13 to 15 surrounding the ceiling portion 11, and a broken line 151 is formed on the side wall portions 13 and 14 located on both sides of the ceiling portion 11. A weakening line 152 extending linearly along the boundary is formed. The weakening line 152 reaches the broken line 151 of the side wall 15 located at the end of the ceiling 11, and reaches the middle of the intermediate side wall 12 located between the ceiling 11 and the bottom 16, Convex portion 152 that is continuous with weakening line 152 that extends in a direction transverse to side wall portion 12, and that faces toward bottom 16 so that lip 153 can be formed at an intermediate portion of weakening line 152 that extends in the transverse direction. have. Further, a slit 154 is formed in the bottom portion 16.

  Since this packaging box 150 is provided with a weakening line 152 extending to the intermediate portion in the height direction of the pair of side wall parts 12 and 15 facing each other across the ceiling part 16, as described below, a single-stage box 150a is provided. Can be covered with a flap 155 composed of the ceiling portion 11 or the like. That is, the packaging box 150 can be taken out along the weakening line 152 to take out the contents tray 1 (not shown in the drawings), and the one-stage box shown in FIGS. 19 and 20. It can be changed to 150a. The first-stage box 150a has a flap 155 formed by the ceiling portion 11 or the like, and a lip 153 located at the center of the folded piece 156 located at the tip of the flap 155 is inserted into the slit 154, whereby the first-stage box 150a The whole circumference becomes a closed box. In order to facilitate the closing operation of the flap 155 in the state of the first-stage box 150a, it is preferable to provide an additional broken line 157 in the portion constituting the side wall in the vicinity of the lip 153 when the flap 155 is closed.

  As shown in FIG. 18, the packaging box 150 has a weakening line 152 extending linearly along the boundary with the side wall parts 13 and 14 located on both sides of the ceiling part 11 from the boundary with the side wall parts 13 and 14. Is preferably formed so as to be located slightly inside. Thereby, when the packaging box 150 is cut along the weakening line 152 and changed to the first-stage box 150a, the side walls 13 and 14 and the folding margins 20 to 23 are connected without being cut. Can leave. In other words, it is different if the folding allowances 20 to 23 are glued, but if this is not glued, when the weakening line 152 is provided so as to coincide with the boundary with the side walls 13 and 14, one step is provided. When it changes to the box 150a, the side wall parts 13 and 14 will be separated.

According to this reference example 2, since there is no portion to be cut off using the weakening line, all marks, cautions, product descriptions, etc. printed on the surface of the packaging box 150 after changing to the single-stage box 150a Can be maintained in a state where

First Example (FIGS. 21 and 22) :
The packaging box 150A of the first embodiment shown in FIGS. 21 and 22 is a modification of the packaging box 150 of the reference example 2 described above. Although not appearing in FIGS. 21 and 22, the above-described slit 154 is also provided in the packaging box 150A of the first embodiment . The packaging box 150A is characterized by a weakening line 152. The weakening line 152 is formed at the boundary between the ceiling portion 11 and the side wall portions 13 and 14 located on both sides thereof, like the packaging box 150 of FIG. It has an inclined weakening line portion 152a that extends along the both ends, that is, leaves a corner portion of the packaging box 150A. As can be understood from FIGS. 21 and 22, the inclined weakening line portion 152a has a ceiling portion 11. Are connected to the longitudinal weakening line portions 152b and 152c of the side wall portion 15 and the intermediate side wall portion 12 located at the end of the intermediate wall portion 12. 22 is a view seen from the direction of arrow A in FIG. In the first embodiment , as shown in FIG. 21, both ends of the weakening line 152 formed on the central side wall portion 12 are connected to the broken line 151. However, the broken line 151 may be constituted by a weakened line.

  In the packaging box 150A shown in FIG. 21 and FIG. 22, by cutting along the weakening line 152, the first stage having substantially the same form as the first stage box 150a described above with reference to FIG. Although it changes to a box (not shown), the difference from the single-stage box 150a shown in FIG. 19 and the like is that the four-corner of the single-stage box in the packaging box 150A of Example 3 is different. 21 is the point where the corner region 158 shown in FIG. 21 remains, and when the tray 1 (FIG. 1) having a circular shape in plan view is accommodated in this single-stage box, there are gaps at the four corners of the single-stage box. However, when the upper portions of the side wall portions 13 and 14 are folded and positioned on the tray 1, the above-described corner region 158 is filled with the gaps at the four corners. The backlash of the tray 1 accommodated in the one-stage box can be suppressed.

Even in the packaging box 150A of the first embodiment , when cut along the weakening line 152, by leaving the four corner regions 158 illustrated in FIG. 21, as in the packaging box 150a of the reference example 2, The side walls 13 and 14 and the folding margins 20 to 23 can be left unconnected (not shown), thereby maintaining the shape of the single-stage box 150a.

Second Example (FIGS. 23 and 24) :
A packaging box 150B of the second embodiment shown in FIGS. 23 and 24 is a modification of the packaging box 150A of FIGS. 21 and 22 described above. The above-described slit 154 is also provided in the packaging box 150B of the second embodiment .

  For example, as can be understood by comparing FIG. 23 with FIG. 21, in the packaging box 150 </ b> A of FIG. 21, the longitudinal weakening line portions 152 b and 152 c are provided on the side wall portion 15 and the intermediate side wall portion 12 located at the end of the ceiling portion 11. However, instead of this, in the packaging box 150B of the fourth specific example, second inclined weakening line portions 152d and 152e that are inclined toward the ends of the side wall portions 15 and 12 are provided. . In this way, a part of the packaging box 150B can be changed to the single-stage box 150Ba by cutting along a weakening line 152 (including the inclined weakening lines 152b to 152e). By providing the weakening lines 152b to 152e, the cutting operation can be performed smoothly.

Even in the packaging box 150B of the second embodiment , when the four corner regions 158 illustrated in FIG. 23 remain when cut along the weakening line 152, the packaging box 150a of the reference example 2 The side walls 13 and 14 and the folding allowances 20 to 23 can be left unconnected (not shown), thereby maintaining the shape of the packaging box 150B without breaking it apart. it can.

In the second embodiment described above, when the first-stage box 150Ba is changed, the triangular remaining portions 158 at both end portions in the longitudinal direction integrated with the opposite side wall portions 13 and 14 remaining on the bottom portion 16 are provided. As can be understood from FIG. 25, the tray 1 that enters in the vicinity of the peripheral edge of the circular tray 1 in plan view can be prevented from rattling of the tray 1 accommodated in the first-stage box 150Ba. This also applies to the first embodiment described above.

Third Example (FIGS. 26 and 27) :
The packaging box 300 of the third embodiment shown in FIG. 26 is a packaging box 30 of the type described above with reference to FIG. 6 in which the folded pieces 31a and 32a of the mutually facing flaps 31 and 32 are inserted and the contents are boxed. The present invention is particularly preferably applicable. In the packaging box 300 of the third embodiment , a folding line 304 is provided in the intermediate portions in the height direction of the two flaps 31 and 32 and the side wall portions 301 and 302 facing each other (FIG. 27).

  The packaging box 300 is provided with a fold line 303 parallel to the fold line 304 at a position spaced from the boundary of the ceiling (or bottom) by a distance equal to the fold line 304.

  When all the rails of one tray 1 have been used up, as can be understood from FIG. 26, the side walls 301 and 302 facing each other are folded inward along the fold line 304, so that the half-height single-stage box 300a. In addition, by folding the flaps 31 and 32 along the fold line 304, the substantial height of the flaps 31 and 32 is halved and inserted into the one-stage box 300a. With the lid closed.

Although the reference examples and examples have been described above, other types of packaging boxes such as the typical packaging box described in FIGS. 2 to 8 can be used by using various elements employed in the reference examples and examples . Can be changed to a cardboard box. For example, in the first-stage box 150a illustrated in FIG. 20, the lip 153 may be omitted and the flap 155 may be inserted into the first-stage box 150a to close the box.

  Further, in FIG. 21 and the like, the weakening line 152 is inserted along the boundary line between the ceiling part 11 and the side wall parts 13 and 14 facing each other with the ceiling part 11 therebetween, but the part away from the boundary line The weakening line 152 may be inserted in Moreover, although the weakening line 152 of the ceiling part 11 is comprised with the straight line, the weakening line which draws the zigzag line may be sufficient, and the weakening line extended in circular arc shape along the said boundary may be sufficient.

  Further, in FIG. 18 and the like, the weakening line 152 extending in the direction crossing the side wall portion 12 is provided, but as a modified example, the weakening line 152 extending in the direction crossing the side wall portion 15 is used instead of the side wall portion 12. It may be provided. Further, the end edge of the lip 153 formed at the intermediate portion of the weakening line 152 extending in the transverse direction may be extended to the lower end of the side wall portion 15.

It is a perspective view of the tray for curries accommodated in the packaging box of an Example in the state of 2 steps | paragraphs. It is a perspective view of the typical packaging box known conventionally. It is an expanded view of the packaging box of FIG. It is a figure for demonstrating the process of assembling the packaging box of FIG. It is a figure for demonstrating the gluing process following FIG. It is a perspective view of another typical packaging box known conventionally. It is a perspective view of other typical packaging boxes known conventionally. It is a perspective view of other typical packaging boxes known conventionally. It is explanatory drawing which divides the packaging box shown in FIG. 2 into two up and down, and makes the box for 1 steps | paragraphs which accommodates one tray for curry. It is an expanded view of the packaging container for demonstrating the example which makes it possible to close a lid with a box for 1 step when it changes from the packaging box accommodated in the state where two trays for curry were stacked to the box for 1 step. . It is a figure for demonstrating lid closure of the box for 1 steps | paragraphs changed from the packaging box of FIG. It is a figure for demonstrating the combination of the lip | rip and slit which are used for lid closing with the 1-stage box of FIG. It is an expanded view of the packaging box for demonstrating the structure of the modification of the lid closing mechanism illustrated in FIG. It is a figure for demonstrating an example of the mechanism which halves the height dimension of a side wall part, when changing the packaging box which accommodates the tray for curry | stacking in the state of 2 steps | paragraphs into the box for 1 step | paragraphs. It is a perspective view of the box for 1 steps | paragraphs changed from the packaging container using the mechanism employ | adopted in FIG. It is a perspective view of the packaging box of the reference example 1, and the crossed line is a figure which shows the site | part cut off along a weakening line. It is a perspective view of the box for 1 steps | paragraphs changed from the packaging box of the reference example 1 of FIG. 10 is a development view of a packaging box of Reference Example 2. FIG. It is a perspective view of the box for 1 steps | paragraphs changed from the packaging box of FIG. It is a figure for demonstrating the lid closing of the 1-step box of FIG. It is the perspective view which looked at the packaging box of 1st Example from the one side. It is the perspective view which looked at the packaging box of FIG. 21 from the other side. It is the perspective view which looked at the modification (2nd Example) of the packaging box of 1st Example of FIG. 21 from the one side. It is the perspective view which looked at the packaging box of FIG. 23 from the other side. It is a figure for demonstrating the advantage when changing the packaging box of FIG. 23 into the box for 1 steps | paragraphs. It is a figure for demonstrating 3rd Example including the other mechanism of lid closure of the 1st-stage box changed from the packaging box accommodated in the state which stacked | stacked the tray for curry | stacking 2 stages. It is a perspective view which shows the external appearance of the packaging box shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Ceiling part 12-15 Side wall part 16 Bottom part 150 Packing box 150a 1 step box 151 Folding line 152 Weakening line 153 Lip 154 Slit 155 Flap of 1 step box

Claims (2)

One stage of a size suitable for accommodating the remaining contents after taking out one contents from a packaging box that can accommodate two contents that are substantially circular in plan view. A rectangular packaging box that can be transformed into a box,
The bottom of the rectangle;
Four sidewalls extending upward from the bottom;
A rectangular ceiling connected to the upper ends of the four side walls,
Of the four side walls, a broken line provided on a pair of side walls facing each other and provided in the middle of the side walls in the height direction;
Among the four side walls, including a weakening line extending along the side portion of the ceiling portion from the height direction intermediate portion of the other pair of side walls different from the pair of opposite side walls provided with the broken line,
The weakening line has an inclined weakening line part that leaves a corner part of the ceiling part,
A flap including the ceiling portion is formed by cutting along the weakening line, and a lid capable of opening and closing the first-stage box is formed by the flap and formed by cutting the inclined weakening line portion. The packaging box is characterized in that a corner area to be placed is located in the vicinity of the periphery of the substantially circular content in plan view . One of the other pair of side walls has an additional weakening line across the side wall, and a lip is formed at the tip of the flap by cutting the additional weakening line;
The packaging box according to claim 1, wherein a slit for receiving the lip is formed in the one-stage box.

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