JP2018162076A - Blank sheet and packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging box capable of pushing up a stored article easily by a pushing piece provided at a bottom surface part without tilting the packaging box.SOLUTION: A blank sheet 1A includes: a plurality of bottom flaps 21, 22, 23 and 24 for forming a bottom surface part; and side surface parts 3, 4, 5 and 6 standing from an outer edge of the bottom surface part so as to surround the bottom surface part. One part of the bottom flap has a push-up part 10 which can stand with a folding line 10a being a rotation axis. An opening part 15 is formed across one bottom flap 21 and a side surface part 3 standing from an outer edge 3a of the one bottom flap 21, and a tip edge 10b of the push-up part 10 faces the opening part 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a blank sheet and a packaging box.

In order to prevent the stored articles from moving inside and to be efficiently transported, packaging boxes (packing outer boxes) in which the stored articles individually packed in an inner box or the like are packed without gaps are widely used.
Such a packaging box is difficult to remove because there is no gap for inserting a finger when the lid is opened, and it is difficult to take out the item. In some cases, the inner box may be damaged or scattered and damaged. In order to avoid such a problem, a packaging box is known in which a pushing piece for pushing up a stored article from below is formed on the bottom surface (for example, Patent Document 1 below).
The packaging box described in Patent Document 1 forms a pushing piece in a range where a finger can reach from a ridge portion between a bottom surface portion and a side surface portion.

JP 2003-146327 A

However, the pushing piece provided in the packaging box of Patent Document 1 is formed at a position separated from the ridge, and it is not known where the pushing piece is in the state where the packaging box is placed. You have to find the pushing piece. And when the weight of the accommodation article in a packaging box is large, there existed a problem that it was hesitant to find the pushing piece for the burden which inclines a packaging box. In addition, even if the pushing piece is provided within the reach of the finger from the ridge, the pushing piece is formed at a position away from the ridge, so the packaging box should be placed so that the finger can be placed under the bottom. If the entire packaging box is heavy, fingers may be pinched and there is a problem that it is difficult to take out the stored articles.
Therefore, the present invention provides a packaging box that can easily push up the stored article by the extruded piece provided on the bottom surface without tilting the packaging box.

The blank sheet of the present invention includes a plurality of bottom flaps forming a bottom surface portion, and a side surface portion rising from an outer edge of the bottom surface portion so as to surround the bottom surface portion, and a part of the bottom flap rotates a folding line. The shaft has a push-up portion that can be raised as an axis, and an opening is formed between one bottom flap and a side portion that rises from the outer edge of the one bottom flap, and the tip of the push-up portion is the opening. Facing the club.
According to this configuration, it is easy to recognize that the location where the push-up portion can be operated is the opening, and the push-up portion can be operated in the very vicinity of the side surface portion.

In another blank flap other than the one bottom flap in which the opening of the blank sheet of the present invention is formed, the push-up portion is formed, and at least the push-up portion is the one bottom at the time of box making. It overlaps with the inner surface of a flap and a side part, and it is provided so that it can block | close and cover the said opening part.
According to this structure, it can prevent that a foreign material penetrate | invades from an opening part.

The push-up portion is formed on another bottom flap different from the one bottom flap in which the opening of the blank sheet of the present invention is formed, and at least the push-up portion overlaps the one bottom flap. The uncovered part of the opening that is not covered by the push-up part can be opened and closed by an opening window formed by a part of the side part. It has become.
According to this structure, it can prevent that a foreign material penetrate | invades from an opening part.

On the side surface of the blank sheet of the present invention, there is formed a lock portion that has a leading edge facing the opening and is bent in the inner direction at the time of box making so that the rising of the push-up portion can be fixed.
According to this structure, it can maintain in the state which lifted the pushing-up part with the lock | rock part.

The packaging box of the present invention is boxed using any of the blank sheets.
According to this configuration, any one of the above effects is achieved.

  The Bunk sheet and the packaging box of the present invention have an effect that the stored article can be easily pushed up by the pushing-up portion provided on the bottom surface portion with almost no inclination of the packaging box.

It is the expanded view which looked at the blank sheet of the 1st Embodiment of this invention from the outer surface. It is the perspective view which showed the packaging box of the 1st Embodiment of this invention. It is a front view of the packaging box of the 1st Embodiment of this invention. It is the top view which looked at the packaging box of the 1st Embodiment of this invention in the state which opened the cover. It is the top view which showed the usage method of the packaging box of the 1st Embodiment of this invention. It is sectional drawing which looked at FIG.4 and FIG.5 by the L1-L1 line | wire. It is the upper perspective view which showed the usage method of the packaging box of the 1st Embodiment of this invention. It is the expanded view which looked at the blank sheet of the 2nd Embodiment of this invention from the outer surface. It is the top view which looked at the packaging box of the 2nd Embodiment of this invention in the state which opened the lid | cover. It is a left view of the packaging box of the 2nd Embodiment of this invention. It is the fragmentary sectional view which looked at FIG. 9 by the L2-L2 line.

Hereinafter, embodiments of the blank sheet and the packaging box of the present invention will be described with reference to the drawings.
In this specification, up, down, left, and right are relative positional relationships when the packaging box is placed with the bottom surface portion being the bottom surface and the side surface portion where the top surface portion is connected is viewed from the back surface side. It points to.

  As shown in FIG. 1 or 2, the blank sheet 1 </ b> A according to the first embodiment of the present invention surrounds the bottom surface portion 2 and a plurality of bottom flaps 21-24 that form the bottom surface portion 2 of the packaging box X <b> 1. A side surface portion 3-6 rising from the outer edges 2a-2d of the bottom surface portion 2 and a top surface portion 7 serving as a lid capable of opening and closing the upper opening 8a of the side surface portion 3-6 are provided.

As shown in FIG. 2, the side surface portion 3-6 surrounding the bottom surface portion 2 forms a cylindrical body 8 during box making. As shown in FIG. 1, the fourth bottom flap 24 of the blank sheet 1A can be raised with the fold line 10a as a rotation axis, and its leading edge 10b is the outer edge of the bottom portion 2 shown in FIG. It has a push-up part 10 adjacent to 2a.
This blank sheet 1A is formed by punching out a sheet of rigid paper or synthetic resin and inserting slits or fold lines.

The side surface portions 3-6 are front and rear side surface portions 3, 6 rising from the outer edges 2a, 2c forming the long sides of the bottom surface portion 2, and left and right side surface portions 4, 5 rising from the outer edges 2b, 2d forming the short sides of the rectangular bottom surface portion 2. It is comprised by. Any side part 3-6 is also formed in the rectangle.
In addition, the names of the front and rear side surface portions 3 and 6 and the left and right side surface portions 4 and 5 are given for convenience of description of the embodiment of the present invention, and do not necessarily define the orientation with respect to the user or the installation location. It is not a thing.

In the present embodiment, a top surface portion 7 is continuously provided at the upper end of the rear side surface portion 6.
The top surface portion 7 is formed in a rectangular shape having an area that can cover the entire upper opening 8a of the cylindrical body 8 shown in FIG.
The top surface portion 7 is formed with an insertion piece 11 that is inserted along the inner surface of the front side surface portion 3 during box making. The tip corner of the insertion piece 11 is rounded so as to facilitate insertion into the cylindrical body 8 during box making.

In the vicinity of the center in the direction of the lower side 3a of the front side surface portion 3, a substantially rectangular opening 15a is formed.
The opening 15a may be of a size that allows human fingers to enter, and is not particularly limited by the size of the inner box, but specifically, the horizontal (horizontal direction) 15 mm-80 mm. The height (vertical direction) is preferably 15 mm-50 mm.
As shown in FIG. 1 and FIG. 3, a lock that can be bent inside the packaging box X <b> 1 is rotated around a folding line 16 c extending in the vertical direction on the side of the opening 15 a formed in the front side surface portion 3. A piece (lock portion) 16 is formed.

  The lock piece 16 has an upper slit 16a in which the upper end edge 17a forming the opening 15a extends in the horizontal direction as it is, and a lower slit 16b that extends from the opening 15a along the lower side 3a of the front side surface portion 3. And a flat plate portion formed by being surrounded by a folding line 16c formed between the upper and lower slits 16a, 16b. The end of the upper slit 16a is slightly curved toward the fold line 16c.

  As shown in FIG. 1, the side surface portion 3-6 is provided in the order of the right side surface portion 5, the front side surface portion 3, the left side surface portion 4, and the rear side surface portion 6. The front and rear side surface portions 3 and 6 and the left and right side surface portions 4 and 5 are each formed in a rectangular shape having substantially the same height (vertical) direction and horizontal (horizontal) direction.

The rear side surface portion 6 and the right side surface portion 5 are connected to the side of one of the front and rear side surface portions 3 and 6 (the rear side surface portion 6 in this embodiment) to form the cylindrical body 8 shown in FIG. A joint allowance 18 is provided, and the left side surface portion 4 is provided continuously on the other side on the rear side.
In the present embodiment, the joining margin 18 is substantially trapezoidal and has a small width.
A substantially trapezoidal short flap 19 is provided on each of the upper sides of the left and right side surface portions 4 and 5.

  As shown in FIG. 4, the bottom surface portion 2 includes a first bottom flap 21 provided continuously with the lower side 3 a of the front side surface portion 3, and a first bottom flap 21 provided continuously with the lower sides 4 a, 5 a of the left and right side surface portions 4, 5. 2 and 3rd bottom flaps 22 and 23, and the 4th bottom flap 24 provided in a row by the lower side 6a of the rear side part 6. The plurality of bottom flaps 21-24 are so-called one-touch bottoms that automatically overlap each other by forming the side surface portion 3-6 into the cylindrical body 8 to form the bottom surface portion 2.

  As shown in FIG. 1, the first bottom flap 21 is joined to a substantially trapezoidal base portion 25 having the lower side 3 a as the lower side 3 a of the front side surface portion 3 and the third bottom flap 23, and can be interlocked with these. An interlocking joint portion 26 is provided.

The base portion 25 of the first bottom flap 21 includes a lower base 25a, an outer inclined side 25b that rises steeply from one end thereof, a distal end 25c that extends substantially parallel to the lower base 25a from the distal end of the outer inclined side 25b, and a distal end It is surrounded by an inner inclined side 25d that makes a gentle inclination with respect to the lower base 25a from the end of 25c and protrudes the interlocking joint 26.
The interlocking joint portion 26 is formed in a size and shape that fits in the third bottom flap 23 during box making.

In the first bottom flap 21, an opening 15b is formed near the center of the lower bottom side 25a.
The opening 15b has substantially the same width as the combined width of the opening 15a and the lock piece 16, and is not particularly limited. Depending on the size of the inner box, the opening 15b is 3 mm in the direction from the lower base 25a to the tip 25c. It is formed to have an opening of 20 mm or less. The opening 15b and the opening 15a continuously form the opening 15, and can be moved up and down while facing a tip edge 10b of the push-up portion 10 described later.

The second bottom flap 22 is connected to the lower side 4 a of the left side surface portion 4. The second bottom flap 22 has a base portion 27 and an interlocking joint portion 28 for connection with the fourth bottom flap 24.
The interlocking joint 28 is formed in a shape and size that is the minimum necessary for securely joining the second bottom flap 22 and the fourth bottom flap 24 and the fourth bottom flap 24 encloses the second bottom flap 22. Has been.
The third bottom flap 23 is formed in a trapezoid having substantially the same shape as the base portion 27 of the second bottom flap 22, and is connected to the lower side 5 a of the right side surface portion 5 so as to be substantially bilaterally symmetrical with the base portion 27. .

  The fourth bottom flap 24 is a trapezoid having a size that can cover substantially the entire bottom surface portion 2, has an extension dimension that is larger than the lengths of the lower sides 4 a, 5 a of the left and right side surface portions 4, 5, and a lower side 6 a It is connected to. A folding line 29 is formed near the tip of the fourth bottom flap 24. As shown in FIG. 4, the lower side 6a side of the folding line 29 of the fourth bottom flap 24 reaches the lower side 3a of the front side surface part 3 from the lower side 6a during box making and covers almost the entire bottom surface part 2, and the folding line The front end side of the front side surface portion 3 is formed in a size that overlaps the inner surface of the lower portion of the front side surface portion 3 including the entire opening 15 a of the front side surface portion 3.

  On the front end side of the fourth bottom flap 24 in the extending direction, a product packed inside the packaging box X1 can be pushed up, and a pusher that can cover the opening 15 from the bottom surface portion 2 to the front side surface portion 3 is provided. A raising portion 10 is formed. As shown in FIG. 1, the push-up portion 10 is formed between two slits 30 a and 30 b formed in the extending direction of the fourth bottom flap 24, that is, from the middle portion between the lower side 6 a and the tip edge 24 c to the tip. Is formed.

  As shown in FIGS. 1 and 4, the slits 30a and 30b are formed in parallel from the center in the extending direction of the fourth bottom flap 24 to the fold line 29, and expand from the fold line 29 toward the tip edge 10b. It is formed to do. One or a plurality of linkages p that can be easily broken by applying an external force are formed between the start and end of the slits 30a and 30b, and the push-up portion 10 can be prevented from inadvertently floating from the periphery. It is like that.

  As shown in FIG. 1, the folding line 29 is appropriately formed with a notch 29 </ b> S that makes it easy to push 10 by pushing the raised portion 10 easily.

When the first bottom flap 21 to the fourth bottom flap 24 having the above-mentioned configuration are bent at a right angle from the lower sides 3a-6a of the side surface portions 3-6 and rise, the bottom flaps at least partially adjoin each other. And the entire bottom surface 2 can be tightly closed.
And the interlocking joint parts 26 and 28 can be stuck now on the outer surface of the 3rd bottom flap 23 or the 4th bottom flap 24 which adjoins with an adhesive agent.

Next, a method for bringing the blank sheet 1A into a state before folding is described.
In order to make the blank sheet 1A folded before boxing, the fourth bottom flap 24 is folded from the first bottom flap 21 toward the inner surface of the blank sheet 1A. Then, the interlocking joint portion 26 of the first bottom flap 21 and the interlocking joint portion 28 of the second bottom flap 22 are folded on the respective base portions 25 and 27.

Further, in a state where all the bottom flaps 21-24 are folded on the side surface portions 3-6 connected to each other, between the front side surface portion 3 and the right side surface portion 5 and between the left side surface portion 4 and the rear side surface portion 6. The joint margin 18 provided on the rear side surface portion 6 is overlapped on the inner surface of the right side surface portion 5.
Then, the interlocking joint portion 26 of the first bottom flap 21 overlaps the third bottom flap 23, the interlocking joint portion 28 of the second bottom flap 22 overlaps the fourth bottom flap 24, and the joining margin 18 of the rear side surface portion 6. Since it overlaps with the right side surface portion 5, an adhesive material D is provided in each overlapping region, and is adhered at the time of folding.

  As described above, the front side surface portion 3, the left and right side surface portions 4, 5 and the rear side surface portion 6 are folded into the tubular body 8, and the first bottom flap 21 to the fourth bottom flap 24 are interlocked to form the bottom surface portion 2. The blank sheet 1A before box making is completed in a state where it can be formed.

Next, the method and effect | action which form packaging box X1 using the blank sheet 1A before box making are demonstrated.
In order to make the blank sheet 1A before boxing into the packaging box X1, the two sides forming the corners of the folded cylindrical body 8 are pushed so as to approach each other. Then, since the interlocking joint portions 26 and 28 are respectively joined to the adjacent third bottom flap 23 or fourth bottom flap 24, the first bottom flap 21, the third bottom flap 23, the second bottom flap 22 and the second bottom flap 22 The four bottom flaps 24 are pulled together with the opening of the cylindrical body 8 and rise from the lower side of the cylindrical body 8 at a right angle.

As for the bottom flap, the third bottom flap 23 rises first from the first bottom flap 21, the fourth bottom flap 24 gradually overlaps on these inner surfaces, and the tip thereof extends along the inner surface of the front side surface portion 3. Bends. The bottom surface 2 is completed when the fourth bottom flap 24 completely overlaps the first bottom flap 21 to the third bottom flap 23 and the front side surface portion 3 and closes the opening 15 with its tip.
As described above, the packaging box X1 with the top surface portion 71 opened is completed.

  When taking out the inner box from the packaging box X1 in which the inner box is packed without gaps, a finger is put on the tip of the push-up portion 10 facing the opening 15, and FIG. 4 and FIG. 5 or FIG. 6 and FIG. As shown, the push-up unit 10 is lifted upward. Then, the joint p between the push-up part 10 and the periphery thereof is broken, and the push-up part 10 rises upward, and accordingly the inner box protrudes upward from the packaging box X1, so that the protruding inner box is taken out, Remove other boxes as appropriate.

  In this way, the packaging box X1 has the push-up portion 10 formed on the fourth bottom flap 24 overlapped with the inner surfaces of the first bottom flap 21 and the front side surface portion 3, and extends over the first bottom flap 21 and the front side surface portion 3. The push-up unit 10 is operated slightly inside the opening 15 formed in the above manner. That is, the packaging box X1 forms the push-up portion 10 adjacent to the outer edge 2a of the bottom surface portion 2, and in the opening portion 15, the push-up portion 10 and the first bottom flap 21 positioned outside the push-up portion 10 and A step corresponding to the thickness of cardboard or cardboard is provided between the front side surface portion 3 and the front side surface portion 3.

  Therefore, the packaging box X1 has a step formed in the vicinity of the opening 15 without operating the lifting portion 10 in a state where the lower side close to the lifting portion 10 is lifted and inclined as in the conventional packaging box. The fingertip can be gradually put in, and the push-up unit 10 can be pushed up very easily and the inner box can be pushed up. Therefore, even if the product to be packed in the packaging box X1 is heavy, there is almost no burden of tilting the packaging box X1, and the first middle box can be easily taken out. Further, as in the conventional packaging box X1, the risk that the packaging box X1 is pushed down to damage the contents by pushing the push-up portion 10 while the packaging box X1 is tilted can be avoided. Play.

  Further, the packaging box X <b> 1 can reliably close the opening 15 by the push-up unit 10. Therefore, there is an effect that foreign matter can be effectively prevented from entering the packaging box X1 from the opening 15.

  Further, since the push-up portion 10 is formed in the fourth bottom flap 24 that overlaps the inner surface of the first bottom flap 21, the slits 30 a and 30 b are formed so as to reach the lower side 3 a of the front side surface portion 3. There is an effect that a decrease in strength of the bottom surface portion 2 due to can be avoided.

  Further, since a lock piece 16 that can be pushed into the inside of the cylindrical body 8 is formed on the side of the opening 15a, the lock piece 16 is interposed below the push-up portion 10 to lock this lock piece 16. The effect that the rising of the pushing-up part 10 can be hold | maintained with the piece 16 is produced.

  Note that the opening 15 of the packaging box X1 can be closed by the push-up portion 10, but immediately before being pushed up to the cutout portion (that is, the opening 15a portion) of the front side surface portion 3 that forms the opening 15. An opening window (not shown) that can be cut off or rotated in the vertical direction may be provided. According to such a configuration, the opening 15 can be closed until the inner box is removed. In this case, the opening portion 15b on the bottom surface portion 2 side may be formed so as to be freely openable in the same manner as the front side surface portion 3 side, but may be opened in advance as a trigger for opening the lower end of the front side surface portion 3. .

  In the present embodiment, an example in which only one push-up portion 10 and a corresponding opening 15 are provided in the packaging box X1 has been shown. However, as long as the configuration is the same as the above-described configuration, the push-up portion 10 and Two or more openings 15 may be formed in the packaging box X1.

  Next, the blank sheet 1B and the packaging box X2 according to the second embodiment of the present invention will be described with reference to FIGS. In addition, in this embodiment, the same code | symbol is attached | subjected about the structure same as blank sheet 1A and packaging box X1 of 1st Embodiment, the description is abbreviate | omitted, and the structure different from blank sheet 1A etc. is mainly demonstrated.

  The point that the blank sheet 1B is different from the blank sheet 1A is that, as shown in FIGS. 8 and 9, the push-up portion 10 is formed not adjacent to the long side of the bottom surface portion 2 but adjacent to the short side. is there. And in 1st Embodiment, although the raising part 10 was formed in the part which the 1st bottom flap 21 and the 4th bottom flap 24 which extend in the mutually opposing direction overlap, in this embodiment, it adjoins to a rotation direction. A push-up portion 10 is formed at the overlapping portion between the first bottom flap 21 and the second bottom flap 22.

  Further, the opening 15 b is formed in the second bottom flap 22, but the lower end vicinity of the left side surface portion 4 connected to the second bottom flap 22 is an opening continuous with the opening 15 b of the second bottom flap 22. (Uncovered portion) It is also different from the first embodiment in that it is an open window portion 50 in which a 15a can be formed.

  Specifically, the push-up unit 10 is formed on the first bottom flap 21 that is overlaid on the second bottom flap 22. Since the first bottom flap 21 is formed in consideration of the so-called one-touch bottom, as shown in FIG. 9, the outer inclined side 25 b is not in contact with the outer edge 2 b forming the short side of the bottom surface portion 2. It has become.

  Therefore, as shown in FIGS. 8 and 9, the push-up portion 10 has its leading edge 10b reaching the short side of the bottom surface portion 2, that is, the lower side 4a of the left side surface portion 4 or adjacent to the lower side 4a. Further, the first bottom flap 21 protrudes from the outer inclined side 25 b toward the left side surface portion 4. In this way, the first bottom flap 21 can be in contact with the lower side 4a of the left side surface portion 4 connected to the second bottom flap 22 adjacent in the rotational direction, or can be in contact with the lower end edge along the inner surface of the side surface portion 4. Thus, the tip edge 10b of the push-up portion 10 is provided.

  At the time of box making, an opening 15b is formed at the position of the first bottom flap 21 corresponding to the intermediate portion in the width direction of the push-up portion 10. Although the opening part 15b is not specifically limited, It is good to be formed in 3 mm or more and 20 mm or less in the extending direction from the lower side 4a of the left side surface part 4.

  As shown in FIGS. 8 and 10, two slits formed in the vertical direction at the lower end portion of the left side surface portion 4 with substantially the same width as the opening 15 b of the second bottom flap 22 shown in FIG. 8. An opening window 50 that is rotatable in the vertical direction is formed by 50a and 50b and a fold line 50c provided between the slits 50a and 50b. As shown in FIG. 11, the opening window portion 50 is folded outward at a fold line 50 c to form an opening portion 15 a connected to the opening portion 15 b of the second bottom flap 22, and the leading edge 10 b of the push-up portion 10 is exposed. It is possible to make it.

  Also in this embodiment, the lock piece 16 is formed adjacent to the opening window 50 as shown in FIG. Specifically, the lock piece 16 includes a slit 16a extending in the horizontal direction substantially on the same line as the folding line 50c of the opening window 50, a slit 16b formed on the substantially same line as the tip edge of the opening window 50, and a slit. It is formed so as to be surrounded by a fold line 16c formed between 16a and 16b, and can be folded inside the cylindrical body 8 shown in FIG.

  As shown in FIG. 11, the packaging box X <b> 2 of the present embodiment folds the opening window portion 50 outward so that the opening portion 15 extends in the vertical direction along the left side surface portion 4 and faces the opening portion 15. The raising part 10 can be moved up and down. Further, by interposing the lock piece 16 below the push-up part 10 lifted upward to push up the stored article in the packaging box X2, the push-up part 10 can be fixed in the lifted state together with the stored article. .

  In the present embodiment, an example in which only one push-up portion 10 and a corresponding opening window portion 50 are provided in the packaging box X2 has been described. Two or more raising portions 10 and openings 15 may be formed in the packaging box X2. Specifically, in addition to the push-up portion 10, the opening window portion 50, and the opening portion 15 provided on the left side surface portion 4 side, the fourth bottom flap 24 at a position that is rotationally symmetric when the packaging box X2 is viewed from above. You may form the raising part 10, the opening window part 50, and the opening part 15 also in the right side surface part 5 and the 3rd bottom flap 23. FIG.

  Moreover, in the packaging boxes X1 and X2 of the first embodiment and the second embodiment, the example in which the lock piece 16 is formed so as to be adjacent to the opening 15 or the opening window 50 is shown. You don't have to.

Further, the present invention is not applicable only to the so-called one-touch bottom like the packaging boxes X1, X2 of the first embodiment and the second embodiment. Specifically, the bottom flap has a doubled portion, the opening 15b is formed in the lower bottom flap, and the opening that can be continued to the opening 15b on the side surface connected to the bottom flap. If it is possible to form 15a, the push-up portion 10 is formed on the bottom flap located on the upper side, and the tip portion thereof can face the opening portion 15, it can be applied to any packaging box.
Moreover, in the blank sheets 1A and 1B and the packaging boxes X1 and X2 of the first embodiment and the second embodiment, the example having the top surface portion 7 is shown, but the top surface portion 7 is not essential for the present invention. .

  As mentioned above, although main embodiment and the modification of this invention were demonstrated, this invention is not limited to each embodiment and its modification mentioned above, The pushing-up part 10 and opening part of 1st Embodiment The structure of 15 and the structure of the push-up part 10, the opening part 15, and the opening window part 50 of 2nd Embodiment can also be combined and applied to one packaging box. For example, when the push-up portion 10, the opening portion 15 and the opening window portion 50 of the second embodiment are formed on the left side surface portion 4 of the packaging box X1 of the first embodiment, the fourth bottom flap 24 is placed on the right side surface portion. The fourth bottom flap 24 may be formed so as to be close to the fifth side so that the fourth bottom flap 24 does not overlap the left side surface portion 4 side forming the push-up portion 10.

1A, 1B ... Blank sheet 3 ... Front side surface (side surface)
4 ... Left side (side)
5 ... Right side (side)
6 ... Rear side surface (side surface)
8 ... Cylindrical body 15 ... Opening part 15a ... Opening part (non-covering part)
15b ... opening 16 ... lock piece (lock part)
21 ... 1st bottom flap (bottom flap)
22 ... Second bottom flap (bottom flap)
23. Third bottom flap (bottom flap)
24. Fourth bottom flap (bottom flap)
50 ... Opening window X1, X2 ... Packaging box

Claims (5)

A plurality of bottom flaps forming a bottom portion;
A side part rising from the outer edge of the bottom part so as to surround the bottom part,
A part of the bottom flap has a push-up portion that can be raised with a folding line as a rotation axis,
An opening is formed across one bottom flap and a side portion rising from the outer edge of the one bottom flap,
The blank sheet | seat in which the front-end | tip part of the said raising part faces the said opening part. The raised portion is formed on another bottom flap other than the one bottom flap in which the opening is formed,
2. The blank sheet according to claim 1, wherein at least the push-up portion is provided so as to overlap and cover the opening of the one bottom flap and the side surface portion during box making. The raised portion is formed on another bottom flap other than the one bottom flap in which the opening is formed,
At least the push-up portion can be installed so as to overlap with the one bottom flap and cover a part of the opening, and the uncovered portion of the opening that is not covered by the push-up portion is the side surface. The blank sheet according to claim 1, wherein the blank sheet is openable and closable by an opening window formed by a part of the portion.   The blank according to claim 2 or 3, wherein a lock portion is formed on the side surface portion so that a leading edge thereof faces the opening portion and is bent in an inner direction during box making to fix the rising of the push-up portion. Sheet. The packaging box formed using the blank sheet as described in any one of Claim 1 to 4.

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