JP2019147617A - Packaging container - Google Patents

Abstract

To provide a technology that can easily separate a wrap-around type packaging container into an upper side and a lower side.SOLUTION: In a wrap-around type packaging container 100, a side flap 50, which is exposed from a gap between an upper flap 20 and a lower flap 30 at a rear end, includes a cut line and an insertion part 56. The cut line continues into a cut line 16a of a side plate 16. When the packaging container 100 is opened, fingers are inserted into the insertion part 56 to pull up an upper part 102 of the packaging container to break the cut line 16a.SELECTED DRAWING: Figure 4

Description

  The present specification relates to a packaging container. In particular, the present invention relates to a wrap around (or wrap round) type packaging container.

  Patent Document 1 discloses a technique for opening a packaging container. This packaging container has a rectangular parallelepiped shape. The packaging container is provided with a perforated cut line that wraps around the packaging container across its front and rear surfaces and right and left side surfaces. The front surface of the packaging container has a finger hole that opens at a position above the cut line.

  The user inserts his / her finger into the finger hole and pulls the upper part above the cut line of the packaging container upward to open the packaging container separately from the upper side and the lower side.

JP 2003-205933 A

  In a so-called wrap-around type packaging container, flaps connected to the top plate, the bottom plate, and the left and right side plates are arranged to overlap each other at the front and rear ends of the packaging container. In the technique described above, a wrap-around packaging container is not considered. The present specification provides a technique that can be easily separated into an upper side and a lower side in a wrap-around type packaging container.

  The technology disclosed in the present specification relates to a wrap-around type packaging container. In the packaging container, a top plate, a right side plate, a bottom plate facing the top plate, and a left side plate facing the right side plate are arranged in a cylindrical shape. The packaging container includes a right flap extending from the respective front and rear edges of the right side plate toward the left side plate, a left side flap extending from the respective front and rear edges of the right side plate toward the right side plate, and the front and rear sides of the top plate. Extending from the respective end sides toward the bottom plate, the upper flap joined to the outer surface of the left and right side flaps, and extending from the respective front and rear ends of the bottom plate toward the top plate, And a lower flap joined to the outer surface. In at least one of the front and rear directions, the upper flap and the lower flap are disposed with a gap. Each of the left and right plates has a first cut line disposed over the entire length in the front-rear direction. In each of the front and rear directions, each of the left and right side flaps is arranged continuously with the first cut line between the upper flap and the lower flap, and has a second cut line arranged in the left and right direction. An insertion part that allows a finger to be inserted inside the left and right side flaps is disposed in a gap between any of the upper and lower flaps in the front-rear direction.

  In said structure, the upper flap and the lower flap are arrange | positioned with the clearance gap in the up-down direction. According to this configuration, fingers can be inserted into the inside of the packaging containers on the left and right sides without penetrating the upper and lower flaps. Further, the upper flap can be lifted upward by fingers inserted into the insertion portion. Thereby, a packaging container can be easily isolate | separated into an upper side and a lower side by the 1st cut line and the 2nd cut line.

The rear perspective view of the packaging container of 1st Example is shown. The front perspective view of the packaging container of 1st Example is shown. The expanded view of the packaging container of 1st Example is shown. The perspective view explaining the opening method of the packaging container of 1st Example is shown. The perspective view which shows a mode that the lower part of the packaging container of 1st Example is used for a display is shown. The perspective view explaining a mode that the lower part of the packaging container of 1st Example is folded is shown. The perspective view explaining the mode after the lower part of the packaging container of 1st Example was folded is shown. The perspective view explaining a mode that the upper part of the packaging container of 1st Example is folded is shown. The perspective view explaining the mode after the upper part of the packaging container of 1st Example was folded is shown. The back perspective view of the packaging container of 2nd Example is shown. The front perspective view of the packaging container of 2nd Example is shown. The expanded view of the packaging container of 2nd Example is shown. The perspective view explaining the opening method of the packaging container of 2nd Example is shown. The perspective view explaining the opening method of the packaging container of 2nd Example following FIG. 13 is shown. The rear perspective view of the packaging container of 3rd Example is shown. The front perspective view of the packaging container of 3rd Example is shown. The expanded view of the packaging container of 3rd Example is shown. The perspective view explaining the opening method of the packaging container of 3rd Example is shown. The perspective view explaining the opening method of the packaging container of 3rd Example following FIG. 18 is shown. The perspective view explaining a mode that the upper part of the packaging container of 3rd Example is folded is shown. The perspective view explaining a mode that the upper part of the packaging container of 3rd Example following FIG. 20 is folded is shown. The back surface perspective view of the packaging container of 4th Example is shown. The front perspective view of the packaging container of 4th Example is shown. The expanded view of the packaging container of 4th Example is shown. The perspective view explaining the opening method of the packaging container of 4th Example is shown. The perspective view explaining the opening method of the packaging container of 4th Example following FIG. 25 is shown. The perspective view explaining the opening method of the packaging container of 4th Example following FIG. 26 is shown. The perspective view explaining a mode that the upper part of the packaging container of 4th Example is folded is shown. The perspective view explaining a mode that the upper part of the packaging container of 4th Example following FIG. 28 is folded is shown. The perspective view explaining a mode that the upper part of the packaging container of 4th Example following FIG. 29 is folded is shown.

  The main features of the embodiments described below are listed. The technical elements described below are independent technical elements and exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Absent.

(Feature 1) In the packaging container disclosed in the present specification, a side flap and an upper flap that are joined to each other may be located above the insertion portion. According to this configuration, the upper flap and the side flap that are joined to each other with the fingers inserted into the insertion portion can be pulled up simultaneously.

(Feature 2) In the packaging container disclosed in the present specification, the first cut line is inclined upward with respect to the front-rear direction from the end of the front-rear direction where the insertion portion is located to the middle position in the front-rear direction, You may incline below from the intermediate position of the front-back direction. According to this configuration, the first cut line can be easily broken as compared with the case where the first cut line extends without being inclined.

(Feature 3) In the packaging container disclosed in the present specification, each second cut line of the left and right side flaps on the side where the insertion portion is located may be curved upward at an intermediate position in the left and right direction. The insertion portion may be defined by a curved portion of the second cut line. According to this configuration, the second cut line is broken by pressing the insertion portion, that is, the lower portion of the curved portion of the second cut line, to the inside of the packaging container, and fingers are easily inserted through the side flaps. can do.

(Feature 4) In the packaging container disclosed in the present specification, in the gap between the upper flap and the lower flap where the insertion portion is located, the left flap and the right flap are disposed with a gap. Also good. The insertion part may have an opening formed by a gap between the upper flap and the lower flap and a gap between the left flap and the right flap. The opening may be connected to the second cut line. The left and right side flaps on the side where the insertion portion is located are arranged from the opening to the left and right side plates above the second cut line and below the position where the upper flap and the left and right side flaps are joined. A third cut line may be arranged. According to this configuration, the side flap can be separated at the third cut line by inserting a finger into the insertion portion and rotating the upper flap upward. As a result, the portion joined to the upper flap of the side flap can be separated from the other portions of the side flap. By gripping and opening the side flap located between the second cut line and the third cut line, it is possible to break from the second cut line to the first cut line.

(Feature 5) In the packaging container disclosed in the present specification, the insertion portion is disposed in the left-right direction with a gap in the vertical direction between the second cut line and the second cut line in the left and right side flaps. And a fourth cut line. The fourth cut line may extend to the left and right side plates, and may be arranged with an interval from the first cut line. According to this configuration, the fingers can be easily inserted into the insertion portion by breaking the second cut line and the fourth cut line and opening the side flaps. Moreover, since the 4th cut line is arrange | positioned along with the 1st cut line, the 4th cut line and the 1st cut line are broken, and a packaging container is separated up and down to the intermediate position of the front-back direction. Can do. Furthermore, since the 4th cut line does not go round the packaging container, it can avoid that a broken piece separates from a packaging container.

(Characteristic 6) In the packaging container disclosed in the present specification, the insertion portion has a fifth cut line arranged in the left-right direction with a gap in the vertical direction from the second cut line of any of the left and right side flaps. And a second cut line and a sixth cut line extending from one end of the fifth cut line to the second cut line. The fifth cut line extends to the left and right side plates, and may be aligned with the first cut line at intervals. According to this structure, a finger can be easily inserted in an insertion part by breaking a 2nd cut line, a 5th cut line, a 1st cut line, and a 5th cut line, and opening a side flap. Further, at the end of the fifth cut line, the side flap between the second cut line and the fifth cut line is cut by the sixth cut line. For this reason, when breaking the 2nd cut line and the 5th cut line, by pressing the adjacent part across the 6th cut line to the side flap between the 2nd cut line and the 5th cut line The finger can be inserted inside, and the side flap between the second cut line and the fifth cut line can be hooked with the finger and broken.

(Feature 7) In the packaging container disclosed in the present specification, each of the left and right side flaps may have a seventh cut line that surrounds a joint portion with the upper flap. After the packaging container is divided vertically at the first cut line and the second cut line, the left and right flaps are broken at the seventh cut line, so that the upper flap is on the left and right sides closer to the joining portion than the seventh cut line. You may be able to rotate outside with respect to a top plate with a flap. The left right plate may be rotatable inward with respect to the top plate with the left and right flaps rotating together with the upper flap. According to this structure, after separating a packaging container up and down, it can fold so that the thickness of an upper part may be made thin by breaking a 7th cut line. In addition, you may have the structure which folds the lower part after separating a packaging container up and down easily. That is, each of the left and right side flaps may have a cut line surrounding a joint portion with the lower flap. After the packaging container is divided vertically at the first cut line and the second cut line, the left and right flaps are broken at the above cut line, so that the lower flap is on the left and right sides closer to the joining portion than the above cut line. The left and right side plates may be rotatable inward with respect to the bottom plate along with the left and right side flaps that rotate with the lower flap.

(Characteristic 8) In the packaging container disclosed in the present specification, an eighth cut line may be disposed at each connection portion between the left and right side plates and the left and right side flaps. According to this structure, after separating the packaging container up and down, by separating the side plate and the side flap by breaking the eighth cut line, the upper and lower portions are developed to reduce the thickness. Can do.

(First embodiment)
FIG. 1 shows a rear perspective view of the packaging container 100, and FIG. 2 shows a front perspective view of the packaging container 100. FIG. 3 shows a development view of the packaging container 100. In the packaging container 100, the top plate 10, the side plate 12, the bottom plate 14, and the side plate 16 are connected to form a cylindrical body. The packaging container 100 is a so-called wrap-around packaging container. That is, the top plate 10 faces the bottom plate 14 with a gap, and the side plate 12 faces the side plate 16 with a gap. As shown in FIG. 3, the packaging container 100 is made from a single sheet of flat paper (eg, cardboard, cardboard, etc.) blank BL1. In the blank BL1, the top plate 10, the side plate 12, the bottom plate 14, and the side plate 16 are connected in order. The packaging container 100 is produced by folding the top plate 10, the side plate 12, the bottom plate 14, and the side plate 16 from the state of the blank BL <b> 1 into a rectangular tube shape and bonding the adhesive piece 18 at the upper end of the side plate 16 to the inner surface of the top plate 10. Has been.

  As shown in FIG. 1, the rear end of the packaging container 100 is closed by an upper flap 20, a lower flap 30, and left and right side flaps 40 and 50. The side flap 40 is rotatably connected to the rear end side of the side plate 12. The side flap 40 extends from the side plate 12 to the center in the left-right direction of the packaging container 100. A side flap 50 is disposed adjacent to the side flap 40. The side flap 50 is rotatably connected to the rear end side of the side plate 16. The side flap 50 extends from the side plate 16 to the center in the left-right direction of the packaging container 100. Thereby, the rear end of the cylindrical body is closed by the side flaps 40 and 50.

  The upper flap 20 and the lower flap 30 are overlapped on the rear surfaces of the side flaps 40 and 50. The upper flap 20 is rotatably connected to the rear end side of the top plate 10. The upper flap 20 is bonded to the side flaps 40 and 50 by an adhesive applied to each of the bonding regions G1 and G2 (shaded regions in FIG. 3). The adhesion region G1 is a partial region of the region where the upper flap 20 and the side flap 40 overlap. The adhesion region G2 is a partial region of the region where the upper flap 20 and the side flap 50 overlap.

  The lower end side of the upper flap 20 extends in parallel with the top plate 10. A lower flap 30 is disposed below the upper flap 20 so as to be separated from the lower end side of the upper flap 20. The upper end side of the lower flap 30 is arranged in parallel with the lower end side of the upper flap 20. The lower flap 30 is rotatably connected to the rear end side of the bottom plate 14. The lower flap 30 is bonded to the side flaps 40 and 50 by an adhesive applied to each of the bonding regions G3 and G4 (shaded regions in FIG. 3). The adhesion region G3 is a partial region of the region where the lower flap 30 and the side flap 40 overlap. The adhesion region G4 is a partial region of the region where the lower flap 30 and the side flap 50 overlap.

  The side flaps 40 and 50 are exposed from the gap between the lower end side of the upper flap 20 and the upper end side of the lower flap 30. In the gap between the upper flap 20 and the lower flap 30, the side flap 40 is provided with a cut line 42 over the entire length in the left-right direction. A plurality of slits penetrating the side flaps 40 are intermittently arranged in the cut line 42. In the following, “cut line” means that a plurality of slits penetrating the plate or flap on which the cut line is arranged are intermittently arranged, unless specifically described. . The “cut line” slit may be a bent slit or a straight slit as in the cut line 42. The cut line 42 is disposed in parallel with the upper end side of the lower flap 30 from the center in the left-right direction of the packaging container 100, and a curved portion 44 that curves upward at an intermediate position is provided. On the side plate 12 side with respect to the curved portion 44, the cut line 42 is inclined upward. An insertion portion 46 defined in the curved portion 44 is disposed at a position surrounded by the curved portion 44.

  The side flap 50 has the same configuration as the side flap 40. That is, the side flap 50 includes a cut line 52 similar to the cut line 42, a curved portion 54 similar to the curved portion 44, and an insertion portion 56 similar to the insertion portion 46.

  As shown in FIG. 2, the front end of the packaging container 100 is closed by the upper flap 22, the lower flap 32, and the left and right side flaps 60 and 70. The side flap 60 is rotatably connected to the front end side of the side plate 12. The side flap 60 extends from the side plate 12 to the center in the left-right direction of the packaging container 100, similarly to the side flap 40. A side flap 70 is disposed adjacent to the side flap 60. The side flap 70 is rotatably connected to the front end side of the side plate 16. The side flap 70 extends from the side plate 16 to the center in the left-right direction of the packaging container 100. Thereby, the front end of the cylindrical body is closed by the side flaps 60 and 70.

  The upper flap 22 and the lower flap 32 are superimposed on the front surface of the side flaps 60 and 70. The upper flap 22 is rotatably connected to the front end side of the top plate 10. The upper flap 22 is bonded to the side flaps 60 and 70 by an adhesive applied to each of the bonding regions G5 and G6 (shaded regions in FIG. 3). The adhesion region G5 is a partial region of the region where the upper flap 22 and the side flap 60 overlap. The adhesion region G6 is a partial region of the region where the upper flap 22 and the side flap 70 overlap.

  A lower flap 32 is disposed away from the lower end side of the upper flap 22. The upper end side of the lower flap 32 is disposed in parallel with the lower end side of the upper flap 22. The lower end side of the upper flap 22 is located above the upper end side of the upper flap 20. That is, the gap between the upper flap 22 and the lower flap 32 is wider than the gap between the upper flap 20 and the lower flap 30. The lower flap 32 is rotatably connected to the front end side of the bottom plate 14. The lower flap 32 is bonded to the side flaps 60 and 70 by an adhesive applied to each of the bonding regions G7 and G8 (shaded regions in FIG. 3). The adhesion region G7 is a partial region of the region where the lower flap 32 and the side flap 60 overlap. The adhesion region G8 is a partial region of the region where the lower flap 32 and the side flap 70 overlap.

  On the side flaps 60 and 70 exposed from the gap between the lower end side of the upper flap 22 and the upper end side of the lower flap 32, cut lines 62 and 72 are arranged over the entire length in the left-right direction, respectively. The cut lines 62 and 72 are provided at positions lower than the cut lines 42 and 52.

  A cut line 12 a connected to the cut line 42 and the cut line 62 is disposed on the side plate 12. The cut line 12a is connected to the cut line 62 at the front end and extends rearward while inclining upward, and from the middle position in the front-rear direction to the rear end while inclining downward. Extend. The cut line 12a is connected to the cut line 42 at the rear end.

  On the side plate 16, a cut line 16a similar to the cut line 12a is disposed. As a result, in the packaging container 100, the cut lines 42, 52, 12a, 16a, 62, and 72 make a round in the circumferential direction. Thereby, the packaging container 100 is divided into the upper part 102 and the lower part 104 by the cut lines 42, 52, 12a, 16a, 62, 72.

  As shown in FIG. 3, a cut line 48 is disposed on the side flap 40 so as to surround the adhesion region G1. Moreover, the cut line 49 is arrange | positioned at the side flap 40 so that the adhesion | attachment area | region G3 may be enclosed. In the cut lines 48 and 49, slits shorter than the cut line 42 and the like are intermittently arranged. The cut lines 48 and 49 are bent along the adhesion regions G1 and G3, respectively. Similarly, a cut line 58 is also arranged on the side flap 50 so as to surround the adhesion region G2, and a cut line 59 is arranged so as to surround the adhesion region G4.

  A cut line 68 is disposed on the side flap 60 so as to surround the adhesion region G5. Further, a cut line 69 is disposed on the side flap 60 so as to surround the adhesion region G7. In the cut lines 68 and 69, slits shorter than the cut line 62 and the like are intermittently arranged. The cut lines 68 and 69 are bent along the adhesion regions G5 and G7, respectively. Similarly, a cut line 78 is also arranged on the side flap 70 so as to surround the adhesion region G6, and a cut line 79 is arranged so as to surround the adhesion region G8.

  Next, a method for opening the packaging container 100 will be described. As shown in FIG. 4, the user presses the insertion portions 46 and 56 with the fingers toward the inside of the packaging container 100, falls the insertion portions 46 and 56 toward the inside of the packaging container 100, and inserts the fingers into the packaging container 100. To do. Thus, the user pulls the upper flap 102 of the packaging container 100 upward and forward (in the direction of the arrow in FIG. 4) by hooking the side flaps 40 and 50 with fingers. At this time, the lower portion 104 is suppressed from being pulled up with the upper portion 102 due to the weight of the article in the packaging container 100. Thereby, the cut lines 42, 52, 12a, 16a, 62, 72 are broken, and the upper part 102 and the lower part 104 are separated.

  Since the side flaps 40 and 50 and the upper flap 20 are bonded, the side flaps 40 and 50 and the upper flap 20 are firmly fixed when the upper portion 102 is pulled up. Thereby, the user can easily pull up the upper part 102 by hooking the side flaps 40 and 50 with fingers.

  According to this configuration, the wrap-around packaging container 100 can be easily separated into the upper part 102 and the lower part 104. Further, after the upper part 102 and the lower part 104 are separated, debris and the like are not separated from the upper part 102 and the lower part 104.

  As shown in FIG. 5, the lower portion 104 can also be used when displaying the products stored in the packaging container 100. Since the cut lines 62 and 72 on the front side of the packaging container 100 are disposed relatively downward, the front end side of the lower portion 104 can be lowered. As a result, it is possible to make the product easier to see at the time of display.

  Further, in a situation where cylindrical products are packaged in the packaging container 100 as shown in FIG. 5, the insertion portions 46 and 56 are arranged between the products by placing the insertion portions 46 and 56 between the products. The space to knock down inside can be secured.

  After separating the upper part 102 and the lower part 104, the upper part 102 is preferably thinned so as not to be as bulky as possible. The user breaks the side flaps 40, 50, 60, 70 along the cut lines 48, 58, 68, 78 and pulls the upper flaps 20, 22 outward from the state shown in FIG. Rotate against. As a result, of the side flaps 40, 50, 60, 70, the portion bonded to the upper flaps 20, 22 rotates together with the upper flaps 20, 22. On the other hand, the side plates 12 and 16 are pulled by the portions not bonded to the upper flaps 20 and 22 so as to rotate inward with respect to the top plate 10. Thereby, as shown in FIG. 9, the upper part 102 is folded thinly.

  Similarly, as shown in FIG. 6, the lower portion 104 is preferably thinned so as not to be as bulky after the display is finished. The user turns the side flaps 40, 50, 60, 70 with respect to the bottom plate 14 by breaking the side flaps 40, 50, 60, 70 along the cut lines 49, 59, 69, 79 and pulling the lower flaps 30, 32 outward. As a result, of the side flaps 40, 50, 60, 70, the portion bonded to the lower flaps 30, 32 rotates with the lower flaps 30, 32, while the side plates 12, 16 are driven by the unbonded portions. Is pulled inward with respect to the bottom plate 14. Thereby, as shown in FIG. 7, the lower part 104 is folded thinly.

(Second embodiment)
10 shows a rear perspective view of the packaging container 200, and FIG. 11 shows a front perspective view of the packaging container 200. FIG. 12 is a development view of the packaging container 200. Similar to the packaging container 100, the packaging container 200 is formed by connecting the top plate 10, the side plate 12, the bottom plate 14, and the side plate 16 to form a cylindrical body. As shown in FIG. 12, the packaging container 200 is produced from one flat blank BL2.

  As shown in FIG. 10, the rear end of the packaging container 200 is partially closed by an upper flap 220, a lower flap 230, and left and right side flaps 240 and 250. The upper flap 220 and the lower flap 230 have the same configuration as the upper flap 20 and the lower flap 30 of the packaging container 100. The side flap 240 is rotatably connected to the rear end side of the side plate 12. The side flap 240 extends from the side plate 12 to the center in the left-right direction of the packaging container 200 at the portion overlapping the upper flap 220 and the lower flap 230, while the portion located in the gap between the upper flap 220 and the lower flap 230 is The side plate 12 extends to an intermediate position between the center of the packaging container 200 in the left-right direction.

  The side flap 250 adjacent to the side flap 240 is rotatably connected to the rear end side of the side plate 16. The side flap 250 has a plane-symmetric shape at the center of the side flap 240 and the packaging container 200 in the left-right direction. Thereby, at the rear end of the cylindrical body, an insertion portion 246 that opens when the side flaps 240 and 250 are separated from each other is defined in the gap between the upper flap 220 and the lower flap 230.

  The side flap 240 is provided with a cut line 242 that is on the side plate 12 side of the opening of the insertion portion 246 and extends from the lower end to a connection position with the side plate 12. The cut line 242 is inclined upward from the insertion portion 246 toward the side plate 12. The same applies to the cut line 252 of the side flap 250.

  The cut line 242 is connected to the cut line 12a of the side plate 12. The cut line 252 is connected to the cut line 16 a of the side plate 16.

  As shown in FIG. 11, the front end of the packaging container 200 is closed by the upper flap 22, the lower flap 32, and the left and right side flaps 60 and 70, similarly to the packaging container 100. The structure of each flap 22, 32, 60, 70 is the same as that of the packaging container 100. However, the side flaps 60 and 70 are provided with slits 64 and 74 so as to be easily folded. The cut lines 62 and 72 are provided at positions lower than the cut lines 242 and 252. The cut line 12a is connected to the cut line 62 at the front end. The cut line 16a is connected to the cut line 72 at the front end. As a result, in the packaging container 200, the cut lines 242, 252, 12 a, 16 a, 62, and 72 make a round in the circumferential direction with the insertion portion 246 interposed between the cut lines 242 and 252. Thereby, the packaging container 200 is divided into the upper part 202 and the lower part 204 by the cut lines 242, 252, 12a, 16a, 62, 72.

  On the side flap 240, a cut line 248 is disposed between the adhesion region G1 and the cut line 242. The cut line 248 is connected to the vicinity of the upper end of the end of the insertion portion 246 on the side plate 12 side. The cut line 248 is spaced apart from the cut line 242 upward. A cut line 258 similar to the cut line 248 is disposed on the side flap 250. Further, cut lines 249 and 259 similar to the cut lines 49 and 59 are arranged on the side flaps 240 and 250.

  Next, a method for opening the packaging container 200 will be described. As shown in FIG. 13, the user inserts a finger into the insertion portion 246 to break the cut lines 248 and 258 so that the side flaps 240 and 250 between the upper flap 220 and the cut lines 248 and 258 are removed. Then, the packaging container 200 is pulled from the inside to the outside. Accordingly, the upper flap 220 rotates with respect to the top plate 10 together with the side flaps 240 and 250 bonded to the upper flap 220 between the cut lines 248 and 258. Next, as shown in FIG. 14, the user grasps the broken piece 240 a between the cut line 242 and the cut line 248 of the side flap 240 and pulls it toward the side plate 12. At the same time, the user holds the broken piece 250a between the cut line 252 and the cut line 258 of the side flap 250 and pulls it toward the side plate 16 side. As a result, the cut lines 242 and 12a are broken and the cut lines 252 and 16a are broken.

  Finally, the user can separate the packaging container 200 into the upper part 202 and the lower part 204 by holding the upper part 202 of the packaging container 200 and pulling it upward.

  Similar to the upper part 102 and the lower part 104 of the packaging container 100, the upper part 202 and the lower part 204 can be folded flat after separation.

(Third embodiment)
FIG. 15 shows a rear perspective view of the packaging container 300, and FIG. 16 shows a front perspective view of the packaging container 300. FIG. 17 is a development view of the packaging container 300. Similar to the packaging container 100, the packaging container 300 is formed by connecting the top plate 10, the side plate 12, the bottom plate 14, and the side plate 16 to form a cylindrical body. As shown in FIG. 17, the packaging container 300 is produced from one flat blank BL3.

  As shown in FIG. 16, the front end of the packaging container 300 is closed by the upper flap 22, the lower flap 32, and the left and right side flaps 60 and 70, similarly to the packaging container 100. The structure of each flap 22, 32, 60, 70 is the same as that of the packaging container 100. A cut line 312d extending in the vertical direction is arranged at the corner of the boundary between the side flap 60 and the side plate 12. A cut line 316d similar to the cut line 312d is also provided at the corner of the boundary between the side flap 70 and the side plate 16.

  As shown in FIG. 15, the rear end of the packaging container 300 is entirely closed by an upper flap 320, a lower flap 330, and left and right side flaps 340 and 350. The upper flap 320 and the lower flap 330 have the same configuration as the upper flap 20 and the lower flap 30 of the packaging container 100. The side flap 340 is rotatably connected to the front end side of the side plate 12. The side flap 340 extends from the side plate 12 to the center in the left-right direction of the packaging container 300.

  The side flap 350 adjacent to the side flap 340 is rotatably connected to the front end side of the side plate 16. The side flap 350 has a plane-symmetric shape at the center of the side flap 340 and the packaging container 300 in the left-right direction.

  On the side flap 340 exposed from the gap between the lower end side of the upper flap 320 and the upper end side of the lower flap 330, a cut line 342 is disposed over the entire length in the left-right direction. The cut line 342 is disposed parallel to the upper end side of the lower flap 330 over the entire length of the packaging container 300 in the left-right direction. A cut line 344 is further arranged on the side flap 340 over the entire length in the left-right direction. The cut line 344 is disposed above the cut line 342 and below the lower end side of the upper flap 320. The cut line 344 is disposed in parallel with the cut line 344 over the entire length of the packaging container 300 in the left-right direction.

  On the side flap 350 exposed from the gap between the lower end side of the upper flap 320 and the upper end side of the lower flap 330, cut lines 342 and 354 similar to the cut lines 342 and 344 of the side flap 340 are arranged.

  On the side plate 12, cut lines 312a and 312b connected to the cut lines 342 and 344, respectively, are arranged. The cut line 312a is connected to the cut line 342 at the rear end, extends forward while being inclined upward, and is directed downward while being inclined downward from an intermediate position in the front-rear direction to the rear end. Extend. The cut line 312a is connected to the cut line 62 of the side flap 60 at the front end. The cut line 312a has a longer section inclined upward and a shorter section inclined downward than the cut line 12a of the packaging container 100.

  A cut line 312b is arranged above the cut line 312a. The cut line 312b is disposed above the cut line 312a and in parallel with the cut line 312a. The cut line 312b extends to an intermediate position of the side plate 12 and is inclined upward over the entire length.

  The side plate 12 further has engaging portions 312c on the upper and lower sides of the cut line 312a on the front and rear end sides. The engaging portion 312c is demarcated by two slits that incline so that the width in the vertical direction decreases from the front and rear ends.

  The side plate 16 has the same configuration as the side plate 12. That is, the side plate 16 has cut lines 316a and 316b connected to the cut lines 352 and 354, respectively. Similarly to the cut line 312a, the cut line 316a extends over the entire length in the front-rear direction of the packaging container 300, and is connected to the cut line 72 at the front end. The cut line 316b extends to an intermediate position of the side plate 16 like the cut line 312b. The side plate 16 further has an engaging portion 316c similar to the engaging portion 312c.

  A cut line 312 e extending in the vertical direction is disposed at a corner portion of the boundary between the side flap 340 and the side plate 12. The cut line 312e is not disposed between the cut lines 312a and 312b. A cut line 316e similar to the cut line 312e is also arranged at the corner of the boundary between the side flap 350 and the side plate 16.

  In the packaging container 300, the cut lines 342, 352, 312a, 316a, 62, and 72 make a round in the circumferential direction. Thereby, the packaging container 300 is divided into the upper part 302 and the lower part 304 by the cut lines 342, 352, 312a, 316a, 62, 72.

  Next, a method for opening the packaging container 300 will be described. As shown in FIG. 18, the user grasps the broken piece 346 between the cut lines 342 and 344 of the side flap 340 with his / her fingers and moves it in the direction of the arrow so that the cut lines 342 and 344 and the side plate 12 The cut lines 312a and 312b are broken. Similarly, the user holds the broken pieces 356 between the cut lines 352 and 354 of the side flap 350 with fingers, and breaks the cut lines 352 and 354 and the cut lines 316 a and 316 b of the side plate 16. Thereby, as shown in FIG. 19, fingers can be inserted into the rear end of the packaging container 300. That is, the area surrounded by the cut lines 342, 344, 352, 354 can be called an insertion portion.

  Next, the user inserts a finger into the insertion portion, hooks the side flaps 340, 350 with the finger, and pulls the upper portion 302 of the packaging container 300 upward and forward (in the direction of the arrow in FIG. 19). increase. As a result, the cut lines 342, 352, 312a, 316a, 62, 72 are broken, and the upper portion 302 and the lower portion 304 are separated.

  After separating the upper portion 302 and the lower portion 304, the user can thin the upper portion 302. Specifically, as shown in FIG. 20, the user rotates the side plates 12 and 16 of the upper portion 302 so as to spread outward. Accordingly, the cut lines 312d and 312e between the side plate 12 and the side flaps 340 and 60 and the cut lines 316d and 316e between the side plate 16 and the side flaps 350 and 70 are broken. Thereby, as shown in FIG. 21, the upper part 302 is deform | transformed flatly.

  Similarly, by rotating the lower plate 304 to spread the side plates 12 and 16 outward, the cut lines 312d, 312e, 316d, and 316e are broken and deformed flat. After the upper portion 302 and the lower portion 304 are deformed flat, the lower portion 302 and the lower portion 304 may be overlapped. In this case, for example, the engaging portions 312c and 316c of the upper portion 302 and the engaging portions 312c and 316c of the lower portion 304 are bent, and one engaging portion 312c and 316c are bent and the other engaging portion 312c and 316c are bent. The upper part 302 and the lower part 304 can be engaged with each other by inserting into the rear notch. Thereby, it can control that lower part 302 and lower part 304 shift. Similarly, when the plurality of upper portions 302 are overlapped or the plurality of lower portions 304 are overlapped, the engagement portions 312c and 316c are similarly used to prevent the plurality of upper portions 302 or the lower portions 304 from being displaced in an overlapping state. be able to.

  In the packaging container 300, the fingers can be easily inserted into the insertion portion by breaking the cut lines 342, 344, 352, and 354. Also, the broken pieces 346 and 356 can be maintained without being separated from the upper portion 302.

  Further, the broken lines 346 and 356 can be grasped to cut the cut lines 312a and 316a halfway. Thereby, the force at the time of pulling up the upper part 302 and isolate | separating the upper part 302 and the lower part 304 can be reduced.

(Fourth embodiment)
FIG. 22 shows a rear perspective view of the packaging container 400, and FIG. 23 shows a front perspective view of the packaging container 400. FIG. 24 is a development view of the packaging container 400. Similar to the packaging container 100, the packaging container 400 is formed by connecting the top plate 10, the side plate 12, the bottom plate 14, and the side plate 16 to form a cylindrical body. As shown in FIG. 24, the packaging container 400 is produced from one flat blank BL4.

  As shown in FIG. 23, the front end of the packaging container 400 is closed by the upper flap 22, the lower flap 32, and the left and right side flaps 60 and 70, similarly to the packaging container 100. The structure of each flap 22, 32, 60, 70 is the same as that of the packaging container 100.

  As shown in FIG. 22, the rear end of the packaging container 400 is entirely closed by an upper flap 420, a lower flap 430, and left and right side flaps 440 and 450. The lower flap 430 has the same configuration as the lower flap 30 of the packaging container 100. The upper flap 420 is rotatably connected to the rear end side of the top plate 10. The upper flap 420 includes two types of rectangular flat plates 420a and 420b having different lengths from the top plate 10. The flat plate 420 a extends from the top plate 10 to the vicinity of the upper end of the lower flap 430. The flat plate 420a is disposed on the side plate 12 side. A flat plate 420b is connected to an end of the flat plate 420a on the side plate 16 side. The flat plate 420b is shorter than the flat plate 420a in the vertical direction. The flat plate 420b is disposed with a gap from the upper end of the lower flap 430.

  The side flap 450 is rotatably connected to the rear end side of the side plate 16. The side flap 450 extends from the side plate 16 to the center in the left-right direction of the packaging container 400. The side flap 440 adjacent to the side flap 450 is rotatably connected to the rear end side of the side plate 12. The side flap 440 extends from the side plate 12 to the center in the left-right direction of the packaging container 400.

  The side flap 440 is covered by the upper flap 420 and the lower flap 430 except for a slight gap between the upper flap 420 and the lower flap 430. On the other hand, the side flap 450 is exposed in the gap between the flat plate 420b and the lower flap 430. A cut line 452 is disposed on the side flap 450 over the entire length in the left-right direction. The cut line 452 is disposed parallel to the upper end side of the lower flap 430 over the entire length of the packaging container 400 in the left-right direction. The side flap 450 is further provided with a cut line 454 extending parallel to the cut line 452. The cut line 454 is disposed above the cut line 452 and below the lower end side of the flat plate 420b. The cut line 454 is disposed from the end on the side plate 12 side to the end side of the flat plate 420a.

  In the side flap 450, a cut line 456 is further disposed between the cut line 454 and the cut line 452 at the end of the cut line 454 with the flat plate 420 a. The cut line 456 has one continuous slit that extends continuously between the cut line 454 and the cut line 452.

  A cut line 442 similar to the cut line 452 is disposed on the side flap 440 (see FIG. 24).

  Cut lines 416 a and 416 b connected to the cut lines 452 and 454 are disposed on the side plate 16. The cut lines 416a and 416b are the same as the cut lines 316a and 316b of the packaging container 300.

  A cut line 412 a connected to the cut line 442 is disposed on the side plate 12. The cut line 412a is connected to the cut line 442 at the rear end, extends forward while being inclined downward, and extends forward from the middle position in the front-rear direction to the rear end while being inclined upward. Extend. The cut line 412a is connected to the cut line 62 of the side flap 60 at the front end.

  In the packaging container 400, the cut lines 442, 452, 412a, 416a, 62, and 72 make a round in the circumferential direction. Thereby, the packaging container 400 is divided into the upper part 402 and the lower part 404 by the cut lines 442, 452, 412a, 416a, 62, 72.

  Next, a method for opening the packaging container 400 will be described. As shown in FIG. 25, the user presses the flat plate 420a adjacent to the cut line 456 with a finger. The side flap 450 positioned inside the flat plate 420a can be pushed inward with a small force because the two sides are cut by the cut lines 452 and 456.

  Next, as shown in FIG. 26, the user inserts a finger into an opening formed by pushing the flat plate 420 a, grasps the end of the broken piece 458 between the cut lines 452, 454, and cuts the cut line 452. The cut lines 416a and 416b of the 454 and the side plate 16 are broken. The broken piece 458 can be easily grasped by pushing the flat plate 420a to form an opening. Thereby, as shown in FIG. 27, a finger can be inserted into the rear end of the packaging container 400. That is, the area surrounded by the cut lines 442, 444, 412a, 412b can be called an insertion portion.

  Next, the user inserts the finger into the insertion portion, grips the connecting portion between the side flap 440 and the side plate 12 with the finger, and faces the packaging container upward and obliquely forward (in the direction of the arrow in FIG. 27). Pull up the top 402 of 400. Thereby, the cut lines 442, 452, 412a, 416a, 62, and 72 are broken, and the upper portion 402 and the lower portion 404 are separated.

  After separating the upper portion 402 and the lower portion 404, the user can make the upper portion 402 thinner. Specifically, as shown in FIG. 28, the side plates 12 and 16 are provided with fold lines 412c and 416c extending downward from the corners of the upper ends inclining with respect to the vertical direction. The folding lines 412c and 416c are formed in a groove shape by pressing the side plates 12 and 16. The user rotates the side plates 12 and 16 to spread outward. As a result, as shown in FIG. 29, the side plates 12 and 16 bend along the folding lines 412c and 416c. Further, the side plates 12 and 16 and the top plate 10 are provided with folding lines 410a that are continuous in a straight line. The folding line 410a is formed in a groove shape by pressing the side plates 12, 16 and the top plate 10. The user bends the upper portion 402 at the folding line 410a, and connects the upper flap 420, the side flaps 440, 450, and the top plate 10 located on the upper flap 420 side of the folding line 410a, the upper flap 22, the side flap 60, By inserting between 70 and the top plate 10, it is folded as shown in FIG. According to this configuration, the top plate 10 positioned closer to the upper flap 420 than the folding line 410a is engaged with the upper flap 22 and the side flaps 60 and 70, so that the upper portion 402 is unintentionally in the state shown in FIG. It is possible to avoid the development to the state of FIG.

  Similarly, the lower portion 404 is bent at folding lines 412f and 416f arranged on the side plates 12 and 16, and a folding line 410a arranged on the side plates 12 and 16 and the bottom plate 14, and is lower than the folding line 410a. The upper flap 430, the side flaps 440, 450 and the bottom plate 14 positioned on the 430 side can be folded by being inserted between the lower flap 32, the side flaps 60, 70 and the bottom plate 14.

  In the packaging container 400, fingers can be easily inserted by breaking the cut lines 416a and 416b and opening the insertion portion.

  As mentioned above, although embodiment of this invention was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

(1) The cut lines 12a, 16a, 312a, 316a, 412a, and 416a of the side plates 12 and 16 of each of the above embodiments have a portion that is inclined upward and a portion that is inclined downward in the front-rear direction. However, the cut lines 12a, 16a, 312a, 316a, 412a, 416a may be inclined downward or upward over the entire length. Moreover, when the location which inclines upward and the location which inclines below are provided, the position where inclination changes is not restricted to the position of said Example, You may have moved to the front-back direction. Moreover, at least one of the location inclined upward and the location inclined downward may exist several times.

(2) In each of the above-described embodiments, a plurality of slits penetrating the side plate 12 and the like are intermittently arranged in the cut line 12a and the like. However, the cut line 12a or the like is a slit that is cut to the middle position in the thickness direction of the side plate 12 without passing through the side plate 12 or the like instead of the plurality of slits that penetrate the side plate 12 or the like. You may have. Alternatively, the cut line 12a or the like may have an opening together with or instead of the slit. Moreover, the shape of the slit may be a straight line or may be bent.

(3) In each of the above embodiments, the upper and lower flaps 22 and 32 on the front side of the packaging containers 100, 200, 300, and 400 are arranged with a gap in the vertical direction. However, the upper and lower flaps 22 and 32 may be disposed adjacent to each other without a gap.

(4) In each of the above embodiments, the flaps are bonded by the adhesives in the bonding regions G1 to G8. However, the application area and location of the adhesive are not limited to the adhesion areas G1 to G8. Moreover, each flap may be joined by an adhesive tape or the like in addition to the adhesive.

(5) The packaging containers 100, 200, 300, and 400 of the above embodiments may be made of a material other than paper, for example, a resin material such as plastic.

  The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

10: Top plate 12: Side plate 12a: Cut line 14: Bottom plate 16: Side plate 16a: Cut line 20, 22: Upper flap 30, 32: Lower flap 40, 50, 60, 70: Side flap 42, 52: Cut line 44 54: Curved portion 46, 56: Insertion portion 48, 58: Cut line 49, 59: Cut line 62, 72: Cut line 68, 78: Cut line 69, 79: Cut line 100, 200, 300, 400: Packaging Containers BL1, BL2, BL3, BL4: Blank

Claims (9)

A top plate, a right side plate, a bottom plate facing the top plate, and a left side plate facing the right side plate are wrap-around type packaging containers arranged in a cylindrical shape,
A right side flap extending from the front and rear ends of the right side plate toward the left side plate,
A left-side flap extending from the front and rear ends of the right-side plate toward the right-side plate,
An upper flap that extends from the respective front and rear ends of the top plate toward the bottom plate and is joined to the outer surface of the left and right side flaps;
A lower flap that extends from the respective front and rear edges of the bottom plate toward the top plate and is joined to the outer surface of the left and right side flaps,
In at least one of the front and rear directions, the upper flap and the lower flap are arranged with a gap,
Each of the left and right plates has a first cut line arranged over the entire length in the front-rear direction,
In each of the front and rear directions, each of the left and right side flaps is disposed continuously to the first cut line between the upper flap and the lower flap, and has a second cut line disposed in the left and right direction. ,
The packaging container by which the insertion part which can insert a finger | toe inside is provided in the clearance gap between the upper flap and the lower flap of either of the front-back direction beyond a left-right side flap.   The packaging container according to claim 1, wherein a side flap and an upper flap that are joined to each other are positioned above the insertion portion.   The first cut line is inclined upward with respect to the front-rear direction from the end on the side where the insertion portion is located in the front-rear direction to an intermediate position in the front-rear direction, and inclined downward from the intermediate position in the front-rear direction. 2. The packaging container according to 2. Each second cut line of the left and right side flaps on the side where the insertion portion is located is curved upward at an intermediate position in the left and right direction,
The packaging container according to any one of claims 1 to 3, wherein the insertion portion is defined by a curved portion of the second cut line. In the gap between the upper flap and the lower flap on the side where the insertion portion is located, the left flap and the right flap are arranged with a gap,
The insertion portion has an opening formed by a gap between the upper flap and the lower flap, and a gap between the left flap and the right flap,
The opening is connected to the second cut line,
The left and right side flaps on the side where the insertion portion is located are arranged from the opening to the left and right side plates above the second cut line and below the position where the upper flap and the left and right side flaps are joined. The packaging container according to any one of claims 1 to 3, wherein a third cut line is arranged. The insertion portion is defined by the second cut line and the fourth cut line arranged in the left-right direction with a distance in the vertical direction from the second cut line in the left and right side flaps,
The packaging container according to any one of claims 1 to 3, wherein the fourth cut line extends to the left and right side plates and is arranged with an interval from the first cut line. The insertion portion includes a fifth cut line arranged in the left-right direction with a gap in the vertical direction from any one of the second cut lines of the left and right side flaps, a second cut line, and one end of the fifth cut line. Defined by six cut lines extending to the second cut line;
The packaging container according to any one of claims 1 to 3, wherein the fifth cut line extends to the left and right side plates and is aligned with the first cut line. Each of the left and right flaps has a seventh cut line surrounding the joint with the upper flap,
After the packaging container is divided vertically at the first cut line and the second cut line, the left and right flaps are broken at the seventh cut line, so that the upper flap is on the left and right sides closer to the joining portion than the seventh cut line. It can be turned outward with respect to the top plate together with the flap,
The packaging container according to any one of claims 1 to 7, wherein the left-right plate can be rotated inward with respect to the top plate along with left and right flaps that rotate together with the upper flap.   The packaging container according to any one of claims 1 to 7, wherein an eighth cut line is disposed at each connection portion between the left right side plate and the left and right side flaps.

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