JP6754348B2 - Packaging container - Google Patents

Description

This specification relates to a packaging container. In particular, it relates to a wraparound (or wraparound) 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 perforated cut lines that go around the packaging container on the front and rear surfaces and the left and right side surfaces thereof. The front surface of the packaging container has a finger hole that opens above the cut line.

The user inserts a finger into the finger hook hole and pulls the portion above the cut line of the packaging container upward to separate the packaging container into the upper side and the lower side and open the package.

Japanese Unexamined Patent Publication No. 2003-205933

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

The techniques disclosed herein relate to wraparound packaging. In the packaging container, the top plate, the right side plate, the bottom plate facing the top plate, and the left side plate facing the right side plate are arranged in a tubular shape. The packaging container consists of a right flap extending from the front and rear ends of the right side plate toward the left side plate, a left flap extending from the front and rear ends of the right side plate toward the right side plate, and a front and rear flap of the top plate. The upper flaps that extend from each end of the bottom plate toward the bottom plate and are joined to the outer surface of the left and right side flaps, and the left and right side flaps that extend from the front and rear ends of the bottom plate toward the top plate. It includes a lower flap that is joined to the outer surface. The upper flap and the lower flap are arranged with a gap in at least one of the front-rear directions. 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-rear directions, each of the left and right side flaps is continuously arranged on the first cut line between the upper flap and the lower flap, and has a second cut line arranged in the left-right direction. In the gap between the upper flap and the lower flap in either the front-rear direction, an insertion portion capable of inserting a finger inside beyond the left and right flaps is arranged.

In the above configuration, the upper flap and the lower flap are arranged with a gap in the vertical direction. According to this configuration, the fingers can be inserted into the packaging containers on both the left and right sides without penetrating the upper and lower flaps. In addition, the upper flap can be pulled upward with the fingers inserted into the insertion portion. Thereby, the packaging container can be easily separated into the upper side and the lower side at the first cut line and the second cut line.

The back 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 development 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. A perspective view showing how the lower part of the packaging container of the first embodiment is used for display is shown. The perspective view explaining the state of folding the lower part of the packaging container of 1st Example is shown. The perspective view explaining the state after folding of the lower part of the packaging container of 1st Example is shown. The perspective view explaining the state of folding the upper part of the packaging container of 1st Example is shown. The perspective view explaining the state after folding of the upper part of the packaging container of 1st Example 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 development 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. FIG. 13 is a perspective view illustrating a method of opening the packaging container of the second embodiment following FIG. The back 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 development view of the packaging container of the 3rd Example is shown. The perspective view explaining the opening method of the packaging container of 3rd Example is shown. FIG. 18 is a perspective view illustrating a method of opening the packaging container of the third embodiment following FIG. The perspective view explaining the state of folding the upper part of the packaging container of 3rd Example is shown. FIG. 2 is a perspective view illustrating a state in which the upper portion of the packaging container of the third embodiment following FIG. 20 is folded. The back 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 development 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. FIG. 25 is a perspective view illustrating a method of opening the packaging container of the fourth embodiment following FIG. A perspective view illustrating a method of opening the packaging container of the fourth embodiment following FIG. 26 is shown. The perspective view explaining the state of folding the upper part of the packaging container of 4th Example is shown. FIG. 28 is a perspective view illustrating a state in which the upper portion of the packaging container of the fourth embodiment following FIG. 28 is folded. FIG. 9 is a perspective view illustrating a state in which the upper portion of the packaging container of the fourth embodiment following FIG. 29 is folded.

The main features of the examples described below are listed. It should be noted that 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, which are joined to each other by the fingers inserted into the insertion portion, can be pulled upward at the same time.

(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 on the side where the insertion portion is located to the intermediate position in the front-rear direction. It may be inclined downward from an intermediate position in the front-rear direction. According to this configuration, it is possible to make it easier to break the first cut line 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, the second cut lines of the left and right flaps on the side where the insertion portion is located may be curved upward at an intermediate position in the left-right direction. The insertion portion may be defined by a curved portion of the second cut line. According to this configuration, by pressing the insertion portion, that is, the lower part of the curved portion of the second cut line into the inside of the packaging container, the second cut line is broken and the finger is easily inserted through the side flap. can do.

(Feature 4) In the packaging container disclosed in the present specification, the left flap and the right flap are arranged with a gap in the gap between the upper flap and the lower flap on the side where the insertion portion is located. May be good. The insertion portion 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 a second cut line. The left and right 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 flaps 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 portion of the side flap. By grasping the side flap located between the second cut line and the third cut line and opening it outward, 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 arranged in the left-right direction with a vertical interval between the second cut line and the second cut line on the left and right flaps. It may be defined by a fourth cut line. The fourth cut line extends to the left and right side plates, and may be aligned with the first cut line at intervals. 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. Further, since the 4th cut line is arranged side by side with the 1st cut line, the 4th cut line and the 1st cut line are broken, and the packaging container is separated vertically up to an intermediate position in the front-rear direction. Can be done. Further, since the fourth cut line does not go around the packaging container, it is possible to prevent the fragment from separating from the packaging container.

(Feature 6) In the packaging container disclosed in the present specification, the insertion portion is arranged in the left-right direction with a vertical interval from the second cut line of either the left-right side flap. And may be defined by 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 configuration, the fingers can be easily inserted into the insertion portion by breaking the second cut line and the fifth cut line and the first cut line and the fifth cut line and opening the side flaps. Further, at the end of the fifth cut line, the side flap between the second cut line and the fifth cut line is cut at the sixth cut line. Therefore, when breaking the second cut line and the fifth cut line, the side flap between the second cut line and the fifth cut line is pressed against the adjacent portion of the sixth cut line. , The finger can be inserted inward, and the side flap between the second cut line and the fifth cut line can be hooked with the finger to break.

(Feature 7) In the packaging container disclosed in the present specification, each of the left and right flaps may have a seventh cut line surrounding a joint portion with the upper flap. After dividing the packaging container up and down by 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 of the joint portion side of the seventh cut line. It may be rotatable outward with respect to the top plate together with the flap. The left and right plates may be rotatable inward with respect to the top plate with the left and right flaps rotating with the upper flaps. According to this configuration, after the packaging container is separated into upper and lower parts, the seventh cut line can be broken so that the upper portion can be folded so as to reduce the thickness. It should be noted that the packaging container may have a structure in which the lower portion after being separated into upper and lower parts can be easily folded. That is, each of the left and right flaps may have a cut line surrounding the joint portion with the lower flap. After dividing the packaging container up and down by 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 left and right on the joint portion side with respect to the above cut line. The left and right side plates may be rotatable outward with respect to the bottom plate together with the flaps, and the left and right side plates may be rotatable inward with respect to the bottom plate with the left and right side flaps rotating with the lower flap.

(Feature 8) In the packaging container disclosed in the present specification, an eighth cut line may be arranged at each connecting portion of the left and right side plates and the left and right side flaps. According to this configuration, after the packaging container is separated into upper and lower parts, the side plate and the side flap are separated by breaking the eighth cut line, so that the thickness of each of the upper and lower parts is reduced. Can be done.

(First Example)
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 tubular body. The packaging container 100 is a so-called wraparound type packaging container. That is, the top plate 10 faces the bottom plate 14 at a distance, and the side plate 12 faces the side plate 16 at a distance. As shown in FIG. 3, the packaging container 100 is made of a single flat sheet of paper (for example, thick paper, corrugated 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 this order. The packaging container 100 is manufactured by folding the top plate 10, the side plate 12, the bottom plate 14, and the side plate 16 into a square cylinder from the state of the blank BL1 and adhering the adhesive piece 18 at the upper end of the side plate 16 to the inner surface of the top plate 10. Has been done.

As shown in FIG. 1, the rear end of the packaging container 100 is closed by the upper flap 20, the lower flap 30, and the 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 of the packaging container 100 in the left-right direction. A side flap 50 is arranged 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 of the packaging container 100 in the left-right direction. As a result, the rear end of the tubular body is closed by the side flaps 40 and 50.

The upper flap 20 and the lower flap 30 are superposed 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 adhered to the side flaps 40 and 50 by an adhesive applied to each of the adhesive regions G1 and G2 (hatched regions in FIG. 3). The adhesive region G1 is a part of the region where the upper flap 20 and the side flap 40 overlap. The adhesive region G2 is a part of the region where the upper flap 20 and the side flap 50 overlap.

The lower end side of the upper flap 20 extends parallel to the top plate 10. Below the upper flap 20, the lower flap 30 is arranged 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 parallel to 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 adhered to the side flaps 40 and 50 by an adhesive applied to each of the adhesive regions G3 and G4 (hatched regions in FIG. 3). The adhesive region G3 is a part of the region where the lower flap 30 and the side flap 40 overlap. The adhesive region G4 is a part 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 has a cut line 42 arranged over the entire length in the left-right direction. A plurality of slits penetrating the side flap 40 are intermittently arranged on the cut line 42. In the following, the term "cut line" means that a plurality of slits penetrating the plate or flap on which the cut line is arranged are intermittently arranged unless otherwise specified. .. The "cut line" slit may be a bent slit or a linear slit, as in the cut line 42. The cut line 42 is arranged parallel to the upper end side of the lower flap 30 from the center in the left-right direction of the packaging container 100, and is provided with a curved portion 44 that curves upward at an intermediate position. On the side plate 12 side of the curved portion 44, the cut line 42 is inclined upward. An insertion portion 46 defined in the curved portion 44 is arranged 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. Like the side flap 40, the side flap 60 extends from the side plate 12 to the center of the packaging container 100 in the left-right direction. A side flap 70 is arranged 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 of the packaging container 100 in the left-right direction. As a result, the front end of the tubular body is closed by the side flaps 60 and 70.

The upper flap 22 and the lower flap 32 are overlapped on the front surfaces 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 adhered to the side flaps 60 and 70 by an adhesive applied to each of the adhesive regions G5 and G6 (hatched regions in FIG. 3). The adhesive region G5 is a part of the region where the upper flap 22 and the side flap 60 overlap. The adhesive region G6 is a part of the region where the upper flap 22 and the side flap 70 overlap.

The lower flap 32 is arranged away from the lower end side of the upper flap 22. The upper end side of the lower flap 32 is arranged parallel to 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 adhered to the side flaps 60 and 70 by an adhesive applied to each of the adhesive regions G7 and G8 (hatched regions in FIG. 3). The adhesive region G7 is a part of the region where the lower flap 32 and the side flap 60 overlap. The adhesive region G8 is a part of the region where the lower flap 32 and the side flap 70 overlap.

Cut lines 62 and 72 are arranged 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, respectively, over the entire length in the left-right direction. The cut lines 62 and 72 are provided at positions lower than the cut lines 42 and 52.

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

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

As shown in FIG. 3, a cut line 48 is arranged on the side flap 40 so as to surround the adhesive region G1. Further, a cut line 49 is arranged on the side flap 40 so as to surround the adhesive region G3. At the cut lines 48 and 49, slits shorter than the cut lines 42 and the like are intermittently arranged. The cut lines 48 and 49 are bent along the adhesive regions G1 and G3, respectively. Similarly, the side flap 50 also has a cut line 58 arranged so as to surround the adhesive region G2, and a cut line 59 is arranged so as to surround the adhesive region G4.

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

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

Since the side flaps 40 and 50 and the upper flap 20 are adhered to each other, the side flaps 40 and 50 and the upper flap 20 are firmly fixed when the upper portion 102 is pulled up. As a result, the user can easily hook the side flaps 40 and 50 with his / her fingers and pull up the upper portion 102.

According to this configuration, the wraparound type packaging container 100 can be easily separated into the upper portion 102 and the lower portion 104. Further, after the upper portion 102 and the lower portion 104 are separated, debris and the like are not separated from the upper portion 102 and the lower portion 104.

As shown in FIG. 5, the lower portion 104 can also be used when displaying the products contained in the packaging container 100. Since the cut lines 62 and 72 on the front side of the packaging container 100 are arranged relatively downward, the front end side of the lower portion 104 can be lowered. As a result, the product can be easily seen at the time of display.

Further, in a situation where a cylindrical product is packaged in the packaging container 100 as shown in FIG. 5, the insertion portions 46 and 56 are arranged between the products so that the insertion portions 46 and 56 can be placed in the packaging container 100. It is possible to secure a space to fold down inside.

After separating the upper 102 and the lower 104, it is preferable to make the upper 102 as thin as possible so as not to be bulky. From the state shown in FIG. 8, the user breaks the side flaps 40, 50, 60, 70 at the cut lines 48, 58, 68, 78 and pulls the upper flaps 20, 22 outward to the top plate 10. Rotate against. As a result, of the side flaps 40, 50, 60, 70, the portion adhered 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 so as to rotate inward with respect to the top plate 10 by the portions not adhered to the upper flaps 20 and 22. As a result, as shown in FIG. 9, the upper portion 102 is thinly folded.

Similarly, as shown in FIG. 6, it is preferable that the lower portion 104 is made as thin as possible so as not to be bulky after the display is completed. The user breaks the side flaps 40, 50, 60, 70 at the cut lines 49, 59, 69, 79, pulls the lower flaps 30, 32 outward, and rotates them with respect to the bottom plate 14. As a result, of the side flaps 40, 50, 60, 70, the portion adhered to the lower flaps 30, 32 rotates together with the lower flaps 30, 32, while the portion not adhered causes the side plates 12, 16 Is pulled so as to rotate inward with respect to the bottom plate 14. As a result, as shown in FIG. 7, the lower portion 104 is thinly folded.

(Second Example)
FIG. 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 shows a development view of the packaging container 200. In the packaging container 200, similarly to 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 tubular body. As shown in FIG. 12, the packaging container 200 is made of one flat plate-shaped blank BL2.

As shown in FIG. 10, the rear end of the packaging container 200 is partially closed by the upper flap 220, the lower flap 230, and the 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 located. , Extends to an intermediate position between the side plate 12 and 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-symmetrical shape at the center of the side flap 240 and the packaging container 200 in the left-right direction. As a result, at the rear end of the tubular body, an insertion portion 246 that opens by separating the side flaps 240 and 250 from the side flaps 240 and 250 is defined in the gap between the upper flap 220 and the lower flap 230.

The side flap 240 is arranged 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 thereof to the connecting 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 16a 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 configuration 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 242,252,12a, 16a, 62, 72 make a round in the circumferential direction with the insertion portion 246 sandwiched between the cut lines 242,252. As a result, the packaging container 200 is divided into an upper part 202 and a lower part 204 by cut lines 242,252,12a, 16a, 62, 72.

A cut line 248 is arranged on the side flap 240 between the adhesive 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 arranged above the cut line 242. A cut line 258 similar to the cut line 248 is arranged 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 of 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, and the side flaps 240 and 250 between the upper flap 220 and the cut lines 248 and 258. , Pull up from the inside to the outside of the packaging container 200. As a result, the upper flap 220 rotates with respect to the top plate 10 together with the side flaps 240 and 250 adhered to the upper flap 220 between the cut lines 248 and 258. Then, as shown in FIG. 14, the user grabs the fragment 240a 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 grips the fragment 250a between the cut line 252 and the cut line 258 of the side flap 250 and pulls it toward the side plate 16. 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 an upper part 202 and a lower part 204 by grasping the upper part 202 of the packaging container 200 and pulling it upward.

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

(Third Example)
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 shows a development view of the packaging container 300. In the packaging container 300, similarly to 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 tubular body. As shown in FIG. 17, the packaging container 300 is made of one flat plate-shaped 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 configuration 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 completely closed by the upper flap 320, the lower flap 330, and the 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 of the packaging container 300 in the left-right direction.

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-symmetrical shape at the center of the side flap 340 and the packaging container 300 in the left-right direction.

A cut line 342 is arranged over the entire length 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. The cut line 342 is arranged 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 located above the cut line 342 and below the lower end side of the upper flap 320. The cut line 344 is arranged parallel to the cut line 344 over the entire length of the packaging container 300 in the left-right direction.

A cut line 342,354 similar to the cut line 342, 344 of the side flap 340 is arranged 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 312a and 312b connected to the cut lines 342 and 344 are arranged on the side plate 12. At the rear end, the cut line 312a is connected to the cut line 342 and extends forward while inclining upward, and from the intermediate position in the front-rear direction to the rear end, the cut line 312a inclines downward and faces forward. 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 that is inclined upward and a shorter section that is inclined downward as compared with the cut line 12a of the packaging container 100.

The cut line 312b is arranged above the cut line 312a. The cut line 312b is arranged above the cut line 312a and parallel to the cut line 312a. The cut line 312b extends to an intermediate position on the side plate 12 and slopes upward over its entire length.

The side plate 12 further has engaging portions 312c on the upper and lower sides of the cut lines 312a on the front and rear ends. The engaging portion 312c is defined by two slits that are inclined so as to reduce the width in the vertical direction from the front and rear ends.

The side plate 16 has the same structure 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. Like the cut line 312a, the cut line 316a extends over the entire length of the packaging container 300 in the front-rear direction, 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 312e extending in the vertical direction is arranged at the corner of the boundary between the side flap 340 and the side plate 12. The cut line 312e is not arranged 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, 72 make a round in the circumferential direction. As a result, the packaging container 300 is divided into an upper portion 302 and a lower portion 304 by cut lines 342,352,312a, 316a, 62, 72.

Next, a method of opening the packaging container 300 will be described. As shown in FIG. 18, the user grasps the fragment 346 between the cut lines 342 and 344 of the side flap 340 with his fingers and moves it in the direction of the arrow to form the cut lines 342 and 344 and the side plate 12. The cut lines 312a and 312b are broken. Similarly, the user grips the fracture fragment 356 between the cut lines 352 and 354 of the side flap 350 with his fingers to break the cut lines 352 and 354 and the cut lines 316a and 316b of the side plate 16. As a result, as shown in FIG. 19, the 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 said to be the insertion portion.

Next, the user inserts the 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 part 302 and the lower part 304 are separated.

After separating the upper 302 and the lower 304, the user can thin the upper 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. As a result, 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. As a result, as shown in FIG. 21, the upper portion 302 is deformed flat.

Similarly, by rotating the lower side plates 12 and 16 so as to spread 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 with each other. 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 portions 312c and 316c are bent. The upper 302 and the lower 304 can be engaged by inserting into the later notch. As a result, it is possible to prevent the lower portion 302 and the lower portion 304 from being displaced. Similarly, when a plurality of upper parts 302 are overlapped or a plurality of lower parts 304 are overlapped with each other, the engaging portions 312c and 316c are used to prevent the plurality of upper parts 302 or lower parts 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, 354. Also, the fragment 346,356 can be maintained without being separated from the upper 302.

In addition, the cut lines 312a and 316a can be broken halfway by grasping the broken pieces 346 and 356. As a result, it is possible to reduce the force when the upper portion 302 is pulled up to separate the upper portion 302 and the lower portion 304.

(Fourth Example)
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 shows a development view of the packaging container 400. In the packaging container 400, similarly to 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 tubular body. As shown in FIG. 24, the packaging container 400 is made from one flat plate-shaped 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 configuration 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 completely closed by the upper flap 420, the lower flap 430, and the 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 is composed of two types of rectangular flat plates 420a and 420b having different lengths from the top plate 10. The flat plate 420a extends from the top plate 10 to the vicinity of the upper end of the lower flap 430. The flat plate 420a is arranged on the side plate 12 side. A flat plate 420b is connected to the end side 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 arranged 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 of the packaging container 400 in the left-right direction. 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 of the packaging container 400 in the left-right direction.

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 arranged on the side flap 450 over the entire length in the left-right direction. The cut line 452 is arranged 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. A cut line 454 extending parallel to the cut line 452 is further arranged on the side flap 450. The cut line 454 is arranged above the cut line 452 and below the lower end side of the flat plate 420b. The cut line 454 is arranged from the end on the side plate 12 side to the end side of the flat plate 420a.

Further, on the side flap 450, a cut line 456 is arranged between the cut line 454 and the cut line 452 at the end of the cut line 454 with the flat plate 420a. The cut line 456 has one continuous slit extending continuously between the cut line 454 and the cut line 452.

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

Cut lines 416a and 416b connected to the cut lines 452 and 454 are arranged 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 412a connected to the cut line 442 is arranged on the side plate 12. At the rear end, the cut line 412a is connected to the cut line 442 and extends forward while inclining downward, and from the intermediate position in the front-rear direction to the rear end, the cut line 412a inclines upward and faces forward. 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, 72 make a round in the circumferential direction. As a result, the packaging container 400 is divided into an upper part 402 and a lower part 404 by cut lines 442,452,412a, 416a, 62,72.

Next, a method of 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 his / her fingers. The side flap 450 located inside the flat plate 420a can be pushed inward with a small force because its two sides are cut by the cut lines 452 and 456.

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

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

After separating the upper 402 and the lower 404, the user can thin the upper 402. Specifically, as shown in FIG. 28, the side plates 12 and 16 are provided with folding curves 412c and 416c that are inclined downward in the vertical direction from the corners of the upper ends, respectively. The folded curves 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 so as to spread outward. As a result, as shown in FIG. 29, the side plates 12 and 16 are bent along the folding curves 412c and 416c. Further, a linearly continuous folding curve 410a is arranged on the side plates 12 and 16 and the top plate 10. The folded curve 410a is formed in a groove shape by pressing the side plates 12 and 16 and the top plate 10. The user bends the upper portion 402 along the folding curve 410a, and attaches the upper flap 420, the side flaps 440, 450 and the top plate 10 located on the upper flap 420 side of the folding curve 410a to the upper flap 22, the side flap 60, By inserting it between the 70 and the top plate 10, it is folded as shown in FIG. According to this configuration, the top plate 10 located on the upper flap 420 side of the folding curve 410a is engaged with the upper flaps 22 and the side flaps 60 and 70, so that the upper portion 402 is unintentionally in the state of FIG. 30. It is possible to avoid being expanded to the state shown in FIG.

Similarly, the lower portion 404 is also bent by the folding curves 412f and 416f arranged on the side plates 12 and 16 and the folding curves 410a arranged on the side plates 12 and 16 and the bottom plate 14, and flaps below the folding curve 410a. It can be folded by inserting the upper flap 430, the side flaps 440, 450 and the bottom plate 14 located on the 430 side between the lower flap 32, the side flaps 60, 70 and the bottom plate 14.

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

Although the embodiments of the present invention have been described above in detail, these are merely examples and do not limit the scope of the claims. The techniques described in the claims include various modifications and modifications of the specific examples illustrated above.

(1) The cut lines 12a, 16a, 312a, 316a, 412a, 416a of the side plates 12 and 16 of each of the above embodiments have a portion inclined upward and a portion 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. Further, when the portion inclined upward and the portion inclined downward are provided, the position where the inclination changes is not limited to the position of the above-described embodiment, and may be moved in the front-rear direction. Further, at least one of a portion inclined upward and a portion inclined downward may exist a plurality of times.

(2) In each of the above 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 does not penetrate the side plate 12 or the like and is cut to an intermediate position in the plate thickness direction of the side plate 12 or the like together with a plurality of slits that penetrate the side plate 12 or the like. May have. Alternatively, the cut line 12a or the like may have an opening together with or in place of the slit. Further, 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 arranged adjacent to each other without any gap.

(4) In each of the above examples, each flap is adhered by the adhesive of the adhesive regions G1 to G8. However, the application area and the portion of the adhesive are not limited to the adhesive areas G1 to G8. Further, each flap may be joined by an adhesive tape or the like in addition to the adhesive.

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

Further, the technical elements described in the present specification or the drawings exert technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technique illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and achieving the one object among them has technical utility.

10: Top plate 12: Side plate 12a: Cut line 14: Bottom plate 16: Side plate 16a: Cut line 20, 22: Top flap 30, 32: Lower flap 40, 50, 60, 70: Side flap 42, 52: Cut line 44 , 54: Curved part 46, 56: Insertion part 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 (6)

A wraparound type packaging container in which 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 tubular shape.
The right flap extending from the front and rear edges of the right plate toward the left plate,
The left flap extending from the front and rear edges of the left plate toward the right plate,
The upper flaps that extend from the front and rear ends of the top plate toward the bottom plate and are joined to the outer surfaces of the left and right flaps,
It has a lower flap that extends from each of the front and rear ends of the bottom plate toward the top plate and is joined to the outer surface of the left and right flaps.
The upper flap and the lower flap are arranged with a gap in at least one of the front-rear directions.
The length of each of the front and rear ends of the packaging container composed of the right flap, the left flap, the upper flap and the lower flap is larger than the length of each of the left and right ends of the packaging container composed of the left and right side plates. Short,
Each of the left and right plates has a first cut line that is arranged over the entire length in the front-rear direction.
In each of the front-rear directions, each of the left and right side flaps is continuously arranged on the first cut line between the upper flap and the lower flap, and has a second cut line arranged in the left-right direction. ,
It is an insertion part where fingers can be inserted inward beyond the left and right flaps in the gap between the upper flap and the lower flap in only one of the front and rear directions, and is a part of the second cut line of the left flap. When the first portion is bent and the second portion, which is a part of the second cut line of the right flap, is bent, the insertion portion formed by forming the opening is arranged .
Before the first part was folded, there was no opening in the left flap
Before the second part was folded, there was no opening in the right flap,
There is no separate cut line above or below the first cut line on the left plate,
A packaging container in which there is no separate cut line above or below the first cut line on the right side plate. The packaging container according to claim 1, wherein a side flap and an upper flap that are joined to each other are located 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 the intermediate position in the front-rear direction, and is inclined downward from the intermediate position in the front-rear direction. 2. The packaging container according to 2. The second cut lines of the left and right flaps on the side where the insertion portion is located are curved upward at the intermediate position in the left-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. Each of the left and right flaps has a seventh cut line that surrounds the junction with the upper flap.
After dividing the packaging container up and down by 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 of the joint portion side of the seventh cut line. It can rotate outward with respect to the top plate together with the flap,
The packaging container according to any one of claims 1 to 4, wherein the left right plate can rotate inward with respect to the top plate with the left and right flaps rotating together with the upper flap. The packaging container according to any one of claims 1 to 4, wherein an eighth cut line is arranged at each connecting portion between the left right plate and the left and right flaps.

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