JP3240713U - Packaging container and unfoldable body - Google Patents

Abstract

An object of the present invention is to provide a packaging container that suppresses deformation of a side wall.
A packaging container includes a side wall comprising a pair of first side plates 24, 26 and a pair of second side plates 27, 28, a first end plate 12 arranged at one end of the side wall, and the other side wall. a second end plate that closes an end of the first end plate, the first end plate being connected to one of the first side plates, being farthest from the second end plate at an intermediate position in the front-rear direction; The first end plate and the second end plate have a shape that approaches the second end plate toward each of both ends of the first end plate and the second end plate, and the first end plate and the second end plate are positioned outward in the left and right direction from each of the second side plates at the end in the left and right direction. Each of the first side plates protrudes outward in the left-right direction from each of the second side plates at each of the left-right ends, and each of the second side plates protrudes at each of the left-right ends of the second side plate. is surrounded by the first end plate, the second end plate and the first side plate on the outer side in the left-right direction.
[Selection drawing] Fig. 4

Description

This specification discloses a technique related to a packaging container.

Patent Literature 1 discloses a packaging container that includes a top wall, a bottom wall spaced apart from the top wall, and side walls disposed between the top and bottom walls. The side walls slope toward the bottom wall as they move away from the top wall.

JP 2012-121577 A

For example, when merchandise contained in a packaging container is sold by a vending machine, the packaging container is dropped toward the outlet. When force is applied from the outside of the packaging container so as to drop the packaging container, the side wall of the packaging container may be deformed.

The technique described in this specification provides a technique for suppressing deformation of the side wall of the packaging container.

A first aspect disclosed herein relates to a packaging container. The packaging container includes a side wall including a pair of first side plates extending in a first direction and a pair of second side plates extending in a second direction perpendicular to the first direction, and a first side plate disposed at one end of the side wall. an end plate and a second end plate closing the other end of the side wall, the first end plate being connected to one of the pair of first side plates, Rotating with respect to the second end plate opens and closes one end of the side wall, being most distant from the second end plate at an intermediate position in the second direction, and at each of the two ends in the second direction. each of the first end plate and the second end plate has a shape approaching the second end plate toward the Each of the pair of first side plates protrudes further outward in the first direction than each of the pair of first side plates, and each of the pair of first side plates protrudes further in the first direction than each of the pair of second side plates at each of the ends in the first direction. Each of the pair of second side plates protrudes outward, and at each of the ends in the first direction, each of the pair of second side plates is connected to the first end plate, the second end plate, and the pair of It may be surrounded by the first side plate.

According to this configuration, the second side plate is protected by being surrounded by the first end plate projecting outward in the first direction, the second end plate, and the first side plate. As a result, it is possible to suppress direct application of force to the second side plate from the outside of the packaging container. This can prevent the second side plate from being deformed by an external force.

In a second aspect based on the first aspect, the first end plate projects further outward in the first direction than each of the pair of second side plates at each of the ends in the first direction. The first overlapping piece is connected to the first end plate via a folding line at each edge of the first end plate in the first direction. may

According to this configuration, the first end plate can be reinforced by the first overlapping piece at the portion projecting outward in the first direction.

In a third aspect based on the second aspect, the first overlapping piece may have a notch extending in the first direction from the folding line with the first end plate.

The first end plate has a shape that approaches the second end plate toward both ends in the second direction. That is, the first end plate has a convex shape in a direction away from at least one second end plate at an intermediate position in the second direction. If the first overlapping piece is bent with respect to the first end plate to form a shape that conforms to the shape of the first end plate, the first overlapping piece will have a convex shape at the portion that overlaps the convex shape of the first end plate. have to bend. In a state in which the first end plate and the first overlapping piece are bent along the folding line, by arranging a notch in the bent portion, the first end plate and the first overlapping piece are overlapped to form a convex It can be easily bent into shape.

A fourth aspect is any one of the first to third aspects, wherein the second end plate has a planar shape, and the intermediate position of the first end plate in the second direction is may have a planar shape.

According to this configuration, either the first end plate or the second end plate can be used as the bottom plate.

In a fifth aspect, in any one of the first to fourth aspects, each of the pair of first side plates is arranged at each of the edges in the first direction through a folding line. A second overlapping piece may be provided that overlaps a portion of the first side plate that is folded back in the direction and protrudes outward in the first direction from each of the pair of second side plates of the first side plate.

According to this configuration, the first side plate can be reinforced by the second overlapping piece at the portion protruding outward in the first direction.

In a sixth aspect based on the fifth aspect, the second overlapping piece is connected to the second side plate via a second folding line from the edge opposite to the first folding line with the first side plate. and is adhered to the first side plate between the first folding line and the second folding line, and crosses the second folding line at an intermediate position in the extending direction of the second folding line. , and may have an adhesive portion that overlaps and adheres to the first side plate.

With this configuration, it is possible to increase the bonding area between the second overlapping piece and the first side plate.

In a seventh aspect based on any one of the first to sixth aspects, the second end plate is arranged at each of the ends in the first direction more than each of the pair of second side plates. A third overlapping piece overlapping the portion protruding outward in the first direction is provided, and the third overlapping piece extends through a folding line at each of the edges of the second end plate in the first direction. The edge of the first end plate opposite to the edge of the first end plate in the first direction is connected to the second side plate via a folding line. may be

According to this configuration, the second end plate can be reinforced by the third overlapping piece at the portion projecting outward in the first direction. By connecting the second end plate, the third overlapping piece, and the second side plate via folding lines, the second end plate, the third overlapping piece, and the second side plate are folded into a single flat plate. can be made by

The unfolding body for manufacturing the above packaging container, which is composed of one flat plate, is also novel and useful.

The perspective view of the packaging container of an Example is shown. FIG. 2 shows an exploded view of the packaging container in the packaging state of the embodiment. The perspective view in the middle of assembling a packaging container from the deployment body of an Example is shown. The perspective view in the middle of assembling a packaging container from the deployment body of the Example following FIG. 3 is shown. FIG. 11 shows an enlarged view of the third overlapping piece of the embodiment; The perspective view of the packaging container of an Example is shown.

The packaging container 10 shown in FIGS. 1 and 6 accommodates packaged items such as frozen foods. The packaging container 10 is stored in a vending machine while containing, for example, frozen food. In this case, when the user performs an operation for purchasing frozen food from the vending machine, the frozen food is dropped into the outlet while being accommodated in the packaging container. In addition, the usage form of the packaging container 10 is not limited to the above. For example, items to be packaged other than frozen food may be accommodated and used for transportation, storage, and the like. The front-back, left-right, and up-down directions included in this specification are defined based on the state shown in FIG. 1 for ease of explanation, but do not define the posture during actual use.

As shown in FIG. 2, the packaging container 10 is manufactured by folding a plurality of folding lines provided on one flat unfolded body BL. Each of the plurality of folding lines has at least one of grooves and slits along the folding lines so that it can be easily folded along the folding lines. The slit is a linear cut that penetrates the deployment body BL. A plurality of folding lines are represented by thin dashed lines. Also, the portions to which the adhesive is applied are represented by grid-like fine lines. The deployment body BL is made from a thin piece of corrugated cardboard. Note that the deployment body BL may be made of paper other than corrugated cardboard, or resin.

The outer peripheral surface of the packaging container 10 is formed by end plates 12 and 14 and side walls 20 . The end plate 14 has a rectangular shape. Side wall 20 comprises four side plates 24 , 26 , 27 , 28 positioned at each of the four edges of end plate 14 and surrounding end plate 14 . The side plate 24 is connected to the front edge of the end plate 14 via a folding line 94 . The side plate 24 has a rectangular shape. A bent piece 74 is connected via a bent line 95 to the end of the side plate 24 opposite to the end plate 14 . The bent piece 74 is arranged along the entire length of the end plate 14 in the left-right direction. A side plate 26 is connected to the rear edge of the end plate 14 via a folding line 90 . The side plate 26 has a rectangular shape.

The overlapping piece 34 is connected to the left edge of the end plate 14 via a folding line 91 . The overlapping piece 34 has a rectangular shape. The overlapping piece 34 is arranged over the entire length of the end plate 14 in the front-rear direction. A side plate 28 is arranged at the end of the overlapping piece 34 opposite to the end plate 14 with a folding line 92 interposed therebetween. The edge of the side plate 28 on the side opposite to the overlapping piece 34 is formed in a straight line parallel to the folding line 92 at the central portion in the front-rear direction. It is formed in a straight line shape inclined downward at 10 . The side plate 28 has a central portion in the front-rear direction, that is, the edge formed in a straight line parallel to the folding line 92 , and the folding piece 52 is connected via the folding line 93 . A bent piece is not connected to the portion of the side plate 28 that is formed in a linear shape that slopes downward in the packaging container 10 .

A connecting piece 39 is connected to the front edge of the side plate 28 via a folding line 120 . The connecting piece 39 is arranged over the entire length of the side plate 28 in the vertical direction of the packaging container 10 . The connecting piece 39 has a triangular shape. The connecting piece 39 is connected to the overlapping piece 38 via a folding line 101 sloping upward from the lower end of the packaging container 10 in a direction away from the folding line 120 . That is, the connecting piece 39 connects the side plate 28 and the overlapping piece 38 .

The overlapping piece 38 extends to the side plate 24 and is connected with the side plate 24 via the folding line 121 . The overlapping piece 38 gradually lengthens upward from the lower end of the packaging container 10 . Overlap piece 38 has an adhesive portion 58 . The adhesive portion 58 protrudes toward the connecting piece 39 beyond the folding line 101 at the center of the folding line 101 in the vertical direction of the packaging container 10 . The folding line 101 is interrupted at the central portion where the adhesive portion 58 is arranged. The adhesive portion 58 is separated from the connecting piece 39 by a slit.

A connecting piece 37 is connected to the rear edge of the side plate 28 via a folding line 110 . The connecting piece 37 is arranged over the entire length of the side plate 28 in the vertical direction of the packaging container 10 . The connecting piece 37 has a configuration similar to that of the connecting piece 39 . The connecting piece 37 has a triangular shape and is connected to the overlapping piece 36 via a folding line 100 sloping upward from the lower end of the packaging container 10 in a direction away from the folding line 110 . The connecting piece 37 connects the side plate 28 and the overlapping piece 36 .

The overlapping piece 36 extends to the side plate 26 and is connected with the side plate 26 via the folding line 111 . Overlap piece 36 has a configuration similar to that of overlap piece 38 . The overlapping piece 36 gradually lengthens upward from the lower end of the packaging container 10 . Overlap piece 36 has an adhesive portion 56 . The adhesive portion 56 protrudes toward the connecting piece 37 beyond the folding line 100 at the center of the folding line 100 in the vertical direction of the packaging container 10 . Fold line 100 is discontinued at the central portion where adhesive portion 56 is located. The adhesive portion 56 is separated from the connecting piece 37 by a slit.

The overlapping piece 44 is connected to the right edge of the end plate 14 via a folding line 96 . At the right end of the packaging container 10, a side plate is arranged symmetrically with respect to each of the left end side plate 28 of the packaging container 10, the overlapping piece 34, the connecting pieces 37, 39, the overlapping pieces 36, 38, and the bent piece 52. 27, overlapping pieces 44, connecting pieces 47, 49, overlapping pieces 46, 48, and bent pieces 62 are arranged. Each of the overlapping pieces 46, 48 has an adhesive portion 66, 68, respectively.

The end plate 12 is connected via a folding line 80 to the edge of the side plate 26 opposite to the end plate 14 , that is, the upper edge of the packaging container 10 . The end plate 12 has three parts in the front-rear direction: a central part 12a and end parts 12b and 12c. The end portion 12b is connected to the side plate 26 via a folding line 80. As shown in FIG. The end portion 12b has a rectangular shape. The end portion 12b is connected to the central portion 12a via a folding line 81 at the edge opposite to the side plate 26. As shown in FIG. The central portion 12a has a rectangular shape. The central portion 12a is connected to the end portion 12c via a folding line 82 at the edge opposite to the end portion 12b. The end portion 12c has a rectangular shape. Each of the folding lines 81 and 82 is arranged in parallel in the left-right direction.

The overlapping piece 22 is connected via a folding line 83 to the edge of the end plate 12 on the side opposite to the central portion 12a, ie, the edge of the end plate 12 on the side opposite to the side plate 26 . The overlapping piece 22 is arranged to overlap the side plate 24 . The overlapping pieces 22 are arranged over the entire length of the packaging container 10 in the left-right direction.

The overlapping piece 32 is arranged on the left edge of the end plate 12 with a folding line 85 interposed therebetween. The overlapping piece 32 is arranged over the entire length of the end plate 12 in the front-rear direction. The overlapping piece 32 has a pair of folding lines 32b, 32b arranged in parallel with the extension of the folding line 82 of the end plate 12 therebetween. The overlapping piece 32 has a notch 32a at the end of the pair of folding lines 32b, 32b on the end plate 12 side. The notch 32a penetrates the overlapping piece 32. As shown in FIG. The notch 32a is arranged along the folding line 32b between the pair of folding lines 32b, 32b. The overlapping piece 32 has a pair of folding lines 32c, 32c arranged in parallel with the extension line of the folding line 81 of the end plate 12 therebetween. The overlapping piece 32 has notches 32a similar to the ends of the pair of folding lines 32b, 32b on the end plate 12 side at the ends on the end plate 12 side of the pair of folding lines 32c, 32c.

The overlapping piece 42 is arranged on the right edge of the end plate 12 with a folding line 86 interposed therebetween. The overlapping piece 42 has a configuration similar to that of the overlapping piece 32 . The overlapping piece 42 includes a pair of folding lines 42b, 42b corresponding to the pair of folding lines 32b, 32b, the pair of folding lines 32c, 32c, and the notch 32a, and the pair of folding lines 42c, 42c. , a notch 42a.

(Assembling method of packaging container)
A method of assembling the packaging container 10 from the unfolded body BL will be described. First, adhesive is applied to the overlapping pieces 36,38,34. As shown in FIG. 3, at fold lines 91, 111 and 121, each of the overlapping pieces 36, 38 and 34 is folded over and adhered to the side plates 26 and 24 and the end plate 14, respectively. Similarly, adhesive is applied to the overlapping strips 46, 48, 44 and the overlapping strips 46, 48, 44, respectively, overlap the side plates 26, 24 and the end plate 14, respectively, at fold lines 96, 131, 141. Bend and glue.

Also, an adhesive is applied to the overlapping piece 32 , and the overlapping piece 32 is folded and adhered to the end plate 12 along the folding line 85 . Similarly, an adhesive is applied to the overlapping piece 42, and the overlapping piece 42 is folded and adhered to the end plate 12 at the folding line 86 so that the overlapping piece 42 overlaps.

Next, as shown in FIG. 4 , the side plates 24 , 26 , 27 , 28 are bent along the folding lines 90 , 92 , 94 , 97 to stand up against the end plate 14 . At this time, the connecting piece 37 is folded at the folding lines 100 and 110 with respect to the side plate 28 and the overlapping piece 36 and arranged so as to overlap the overlapping piece 36 . The connecting piece 39 is similarly bent at the folding lines 101 and 120 with respect to the side plate 24 and the overlapping piece 38 and arranged so as to overlap the overlapping piece 38 . At the right end, like connecting piece 37, connecting piece 47 is bent at folding lines 102, 130 with respect to side plate 26 and overlapping piece 46 to overlap overlapping piece 46, and connecting piece 49 is folded into connecting piece 39. , at the folding lines 103 and 140, it is bent with respect to the side plate 27 and the overlapping piece 48, and arranged so as to overlap the overlapping piece 48. As shown in FIG. A notch 150 extending to the boundary between the overlapping pieces 44 and 48 is arranged between the overlapping pieces 44 and 48 in the developed body BL. The notch 150 penetrates the deployable body BL. Thereby, the overlapping piece 48 can be smoothly raised with respect to the overlapping piece 44 . Similar notches are arranged between the overlapping pieces 34 and 36, between the overlapping pieces 34 and 38, and between the overlapping pieces 44 and 46. FIG. Since the cutout 150 is arranged outside the side wall 20 , the contents contained in the packaging container 10 are prevented from being exposed by the cutout 150 .

As shown in FIG. 5, the overlapping piece 36 has an adhesive portion 56 that extends beyond the fold line 100 that borders the connecting piece 37 . Thereby, the bonding area between the overlapping piece 36 and the side plate 26 can be increased. The overlapping piece 36 and the side plate 26 can be bonded relatively firmly.

From the state shown in FIG. 4 , the end plate 12 is bent with respect to the side plate 26 along the folding line 80 to close the opening of the side wall 20 with the end plate 12 . The end plate 12 is bent at folding lines 81 and 82 along the shape of the upper edges of the side plates 27 and 28, respectively. Thereby, the central portion 12a is parallel to the end plate 14 and is the most spaced apart, and the end portions 12b, 12c are slanted so as to approach the end plate 14 toward the longitudinal ends. placed. At this time, the bent pieces 52 , 62 , 74 are bent inside the packaging container 10 .

In line with the end plate 12, the overlapping piece 32 is folded at a pair of folding lines 32b, 32b and a pair of folding lines 32c, 32c. In the configuration in which the pair of folding lines 32b, 32b and the pair of folding lines 32c, 32c extend to the folding line 85 at the boundary between the end plate 12 and the overlapping piece 32, the bent portion at the folding line 85 is further extended to the pair of folding lines 32c, 32c. It must be folded along the folding lines 32b, 32b and the pair of folding lines 32c, 32c, and it is difficult to fold as intended. In the overlapping piece 32, notches 32a are arranged at the ends of the pair of folding lines 32b, 32b and the pair of folding lines 32c, 32c on the end plate 12 side. As a result, the pair of folding lines 32b, 32b and the pair of folding lines 32c, 32c are not arranged near the bent portion of the folding line 85. FIG. As a result, the bent portion at the folding line 85 does not need to be folded along the pair of folding lines 32b, 32b and the pair of folding lines 32c, 32c. Similar to the overlapping piece 32, the overlapping piece 42 is folded at a pair of folding lines 42b, 42b and a pair of folding lines 42c, 42c. The notch 42a prevents the bent portion at the folding line 86 from being folded along the pair of folding lines 42b, 42b and the pair of folding lines 42c, 42c. Next, the folding line 83 is bent so that the overlapping piece 22 overlaps the outside of the side plate 24 .

In the packaging container 10 , an insertion piece 72 is connected via a folding line 84 to the end edge of the overlapping piece 22 opposite to the end plate 12 . The insertion piece 72 is connected to the overlap piece 22 via a folding line 84 at both ends in the left-right direction. The insertion piece 72 is separated from the overlapping piece 22 at the central portion in the left-right direction. A notch 22a is arranged in the overlapping piece 22 to form a gap from the inserting piece 72 at the central portion of the inserting piece 72 in the left-right direction. A slit 78 is arranged at the boundary between the end plate 12 and the side plate 24 . An insertion piece 76 that is arranged across the end plate 12 and the side plate 24 is arranged in the center of the slit 78 in the left-right direction. The insert piece 76 is connected to the end plate 14 at one end and separated from the end plate 14 and the side plate 24 at the other portion.

Insert piece 72 is inserted into slit 78 and insert piece 76 is inserted between insert piece 72 and overlapping piece 22 . The insertion piece 76 is pivoted with respect to the end plate 14 at the joint with the end plate 14 . As a result, when the insertion piece 76 is rotated with respect to the end plate 14 and the insertion piece 72 is inserted into the slit 78 , the insertion piece 76 is inserted between the overlapping piece 22 and the insertion piece 72 . This locks the end plate 12 against the sidewall 20 .

In order to open the packaging container 10 from the state shown in FIG. The insert piece 72 is then pulled out from the slit 78 . As a result, the lock between the end plate 12 and the side wall 20 is released, and the end plate 12 can be opened.

In the packaging container 10, the end plates 12, 14 and the side plates 24, 26 protrude outside the side plate 27 at the right end. Side plate 27 is surrounded by end plates 12,14 and side plates 24,26. According to this configuration, the side plate 27 is protected by being surrounded by the end plates 12, 14 and the side plates 24, 26 projecting outward in the left-right direction. As a result, it is possible to suppress direct application of force to the side plate 27 from the outside of the packaging container 10 . As a result, it is possible to prevent the side plate 27 from being deformed by an external force. Side plate 28 is similarly surrounded and protected by end plates 12, 14 and side plates 24, 26. As shown in FIG.

The end plate 12 overlaps the overlapping piece 42 at the right end. The overlapping piece 42 overlaps the portion of the end plate 12 protruding outside the side plate 27 and extends to the left side of the side plate 27 , that is, to the inside of the packaging container 10 . Thereby, the end plate 12 can be reinforced by the overlapping piece 42 . Further, when the packaging container 10 contains frozen food, dew condensation adheres to the packaging container 10 when the packaging container 10 is taken out of a freezer or the like. By overlapping the end plate 12 and the overlapping piece 42, it is possible to suppress softening of the packaging container 10 due to dew condensation. The end plate 12 and the overlapping piece 32 are the same.

Similarly, the overlapping pieces 46 and 48 overlap the portions of the side plates 24 and 26 protruding to the right from the side plate 27, so that the same effect as the overlapping piece 42 can be obtained. The overlapping pieces 36, 38 are similar. Moreover, the overlapping pieces 34, 44 also have the same effect.

In the end plate 12, a central portion 12a and end portions 12b and 12c have a planar shape. In this configuration, as shown in FIG. 1, the end plate 14 may be positioned downward, or the end plate 12 may be positioned downward. For example, when the packaging container 10 is arranged in a limited space, such as in a vending machine, it is possible to secure the degree of freedom in the orientation of the packaging container 10 .

Bending pieces 52 and 62 are arranged at the upper ends of the side plates 27 and 28, while bending pieces are not arranged at the portions located below the end portions 12b and 12c. Since the end plate 12 protrudes outward from the side plates 27, 28, it is possible to prevent the gap between the side plates 27, 28 and the end plate 12 from being exposed to the outside without arranging the bent pieces. can.

The side plates 27 and 28 prevent the end plate 12 from shifting toward the end plate 14 by contacting the end plate 12 at the upper edge. Side plates 27 and 28 are arranged at intermediate positions in the left-right direction of the end plate 12 . According to this configuration, for example, even if at least one of the side plates 27 and 28 is deformed so as to fall outward, the state of contact with the end plate 12 can be maintained. In the packaging container 10, the end plate 12 can be prevented from coming off the upper edges of the side plates 27,28. In addition, deformation of the end plate 12 between the side plates 27 and 28 can be suppressed compared to a configuration in which the side plates 27 and 28 support the end plate 14 at both ends in the left-right direction.

(correspondence relationship)
The side plates 24 and 26 are an example of "a pair of first side plates", and the side plates 27 and 28 are an example of "a pair of second side plates". The left-right direction is an example of the "first direction", and the front-rear direction is an example of the "second direction". The end plate 12 is an example of a "first end plate", and the end plate 14 is an example of a "second end plate". The overlapping pieces 32, 42 are examples of the "first overlapping piece", the overlapping pieces 36, 38, 46, 48 are examples of the "second overlapping piece", and the overlapping pieces 34, 44 are the "third overlapping piece". is an example.

Although the embodiments of the present invention have been described in detail above, they are merely examples and do not limit the scope of claims for patent utility model registration. The technology described in the claims of the utility model registration includes various modifications and alterations of the specific examples illustrated above.

The end plate 12 may be most distant from the end plate 14 at the middle position in the front-rear direction. For example, the central portion 12a may be shifted from the center in the front-rear direction. Also, the end plate 12 may have a curved surface, or a plurality of flat plates may be connected via a folding line.

In addition, the technical elements described in this specification or in 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 techniques exemplified in this specification or drawings achieve multiple purposes at the same time, and achieving one of them has technical utility in itself.

10: packaging container, 12, 14: end plate, 20: side wall, 24, 26, 27, 28: side plate, 32, 42: overlapping piece, 32a, 42a: notch, 34, 36, 44, 46: overlapping piece , 56, 58, 66, 68: adhesion part, BL: deployment body

Claims (8)

a side wall comprising a pair of first side plates extending in a first direction and a pair of second side plates extending in a second direction perpendicular to the first direction;
a first end plate positioned at one end of the sidewall;
a second end plate that closes the other end of the side wall;
The first end plate is
connected to one first side plate of the pair of first side plates,
opening and closing one end of the side wall by rotating relative to the second end plate;
having a shape that is most distant from the second end plate at an intermediate position in the second direction and approaches the second end plate toward each of both ends in the second direction;
each of the first end plate and the second end plate protrudes further outward in the first direction than each of the pair of second side plates at each end in the first direction;
each of the pair of first side plates protrudes further outward in the first direction than each of the pair of second side plates at each of the ends in the first direction;
At each of the ends in the first direction, each of the pair of second side plates is surrounded by the first end plate, the second end plate and the pair of first side plates on the outside in the first direction. packaging container. The first end plate includes a first overlapping piece that overlaps a portion projecting outward in the first direction from each of the pair of second side plates at each of the ends in the first direction,
2. The packaging container according to claim 1, wherein said first overlapping piece is connected to said first end plate via a folding line at each edge of said first end plate in said first direction. 3. The packaging container according to claim 2, wherein said first overlapping piece has a notch extending in said first direction from said fold line with said first end plate. The second end plate has a planar shape,
The packaging container according to any one of claims 1 to 3, wherein said intermediate position of said first end plate in said second direction has a planar shape. Each of the pair of first side plates is folded back in the first direction via a folding line at each of the edges in the first direction so that the pair of second side plates of the first side plate is folded more than the pair of second side plates of the first side plate. 4. The packaging container according to any one of claims 1 to 3, comprising a second overlapping piece overlapping the portion projecting outwardly in the first direction. The second overlapping piece is
It is connected to the second side plate via a second folding line from the edge opposite to the first folding line with the first side plate,
It is adhered to the first side plate between the first folding line and the second folding line,
6. The packaging container according to claim 5, further comprising an adhesive portion that overlaps and adheres to said first side plate beyond said second folding line at an intermediate position in the extending direction of said second folding line. The second end plate includes a third overlapping piece overlapping a portion projecting outward in the first direction from each of the pair of second side plates at each of the ends in the first direction,
The third overlapping piece is
Each edge of the second end plate in the first direction is connected to the second end plate via a folding line,
4. The edge of the second end plate opposite to the edge of the second end plate in the first direction is connected to the second side plate via a folding line. or the packaging container according to item 1. 4. An unfolding body for manufacturing the packaging container according to any one of claims 1 to 3, which is composed of one flat plate.

Images