JP6909644B2 - Packaging container - Google Patents

Description

The present specification discloses a technique relating to a packaging container having a pair of lid plates.

Patent Document 1 discloses a packaging container including a pair of lid plates. Each of the pair of lid plates comprises an engaging piece that is inserted into an insertion hole located at the boundary between the other lid plate and the side plate connected to the other lid plate.

In the packaging container, a pair of lid plates are stacked and closed, and an engaging piece of the lid plate located on the upper side of the pair of lid plates is connected to the lower lid plate and the side plate connecting the lower lid plate. It is closed by inserting it into an insertion hole located at the boundary. When opening the packaging container, the engaging piece is separated from the rest of the upper lid plate.

In the packaging container, engaging pieces are arranged on each of the pair of lid plates. Therefore, after disconnecting the engaging piece from one lid plate, the other lid plate is placed upward to close the pair of lid plates, and the engaging piece of the other lid plate is attached to one lid plate and the side plate. The packaging container can be closed again by inserting it into the insertion hole at the boundary of.

U.S. Pat. No. 04046311

In the above configuration, when opening the packaging container, the engaging piece cannot be separated along the edge of the lid plate without using an instrument, and the lid plate is torn or other unintended parts are damaged. In some cases. Therefore, it is difficult to open the package smoothly without using an instrument. This packaging container can be used again as a packaging container after the engaging piece is separated from one of the lid plates. However, if the unintended part is damaged, it may not be possible to use it again as a packaging container.

The present specification provides a technique capable of opening a packaging container smoothly and suppressing damage to an unintended portion.

The techniques disclosed herein relate to packaging containers. The packaging container may include a pair of lid plates and side plates connected to the pair of lid plates. The pair of lid plates includes a first lid plate and a second lid plate that overlap each other in a closed state, and the first lid plate is the second lid plate and the second lid plate at a first boundary with the side plate. A first engaging piece that faces the second boundary with the side plate and engages with the second lid plate or the side plate that is continuous with the second lid plate in a closed state, and the first engaging piece. A first guide tape for separating the first lid plate from the first engaging piece side and the first boundary side may be provided at an intermediate position between the first lid plate and the first boundary plate. The second lid plate includes a second engaging piece that engages with the side plate that is continuous with the first boundary side or the first lid plate of the first lid plate with respect to the first guide tape, and the second lid plate. A second guide tape for separating the second lid plate between the second engaging piece side and the second boundary side may be provided at an intermediate position between the engaging piece and the second boundary.

In the above configuration, with the first engaging piece engaged with the second lid plate or the side plate, the first lid plate is placed on the first engaging piece side and the first boundary side along the first guide tape. By separating, the packaging container can be opened. As a result, the packaging container can be opened smoothly. Since the first lid plate is broken along the first guide tape, it is possible to prevent the broken portion from coming off from the first guide tape and tearing the first lid plate at a portion other than the portion along the first guide tape. be able to. The same applies to the case of the second lid plate. As a result, it is possible to prevent the unintended portion from being damaged when the package is opened.

The first lid plate may further have a slit penetrating the first lid plate along at least one end of the first guide tape. According to this configuration, when the first lid plate is broken along the first guide tape, the breaking is started according to the slit, so that the first lid plate can be easily broken along the first guide tape.

The slit located at the one end may be inclined from the one end of the first guide tape toward the other end side so as to approach the first guide tape. According to this configuration, it is possible to prevent the first lid plate from being separated from the first guide tape and being broken.

The slits are arranged at both ends of the first guide tape, and the slits may not be arranged at the intermediate portion of the first guide tape. According to this configuration, the lid plate can be broken from either end of the first guide tape. Further, by not arranging the slits over the entire length of the first guide tape, it is possible to suppress the decrease in the rigidity of the lid plate due to the slits.

The second lid plate may further include a second insertion hole for inserting the first engaging piece between the second guide tape and the second boundary. The first engaging piece may engage with the second lid plate between the second guide tape and the second boundary while being inserted into the second insertion hole. According to this configuration, the second insertion hole that engages with the first engaging piece can be arranged in the second lid plate. As a result, the first engaging piece can be easily inserted into the second insertion hole as compared with the case where the second insertion hole is arranged at the boundary between the second lid plate and the side plate or on the side plate.

The first engaging piece protrudes from a part of the end side of the first lid plate on the second lid plate side, and the first guide tape is in the vicinity of the end side on the second lid plate side. , May be arranged along the end side on the second lid plate side. When the first lid plate is broken along the first guide tape, it is broken on both sides of the first guide tape. In this configuration, the end edge of the first lid plate is arranged on one side of the first guide tape. According to this configuration, when the first lid plate is broken along the first guide tape, it is not necessary to break the first lid plate on both sides of the first guide tape over the entire length of the first guide tape. On one side of the first guide tape, only a part along the first guide tape including the portion where the first engaging piece and the end side of the first lid plate on the second lid plate side are connected is broken. It's fine. As a result, the force required to break the first lid plate can be reduced.

The packaging container is composed of one flat plate, and when the flat plate is unfolded, the first guide tape may be arranged on a straight line of the second guide tape. According to this configuration, the first guide tape and the second guide tape can be arranged by sticking the guide tape on one flat plate in a straight line. Thereby, the work efficiency of arranging the first guide tape and the second guide tape can be improved.

The first lid plate further includes a first insertion hole into which the second engaging piece is inserted between the first guide tape and the first boundary, and the second lid plate further comprises. A second insertion hole into which the first engaging piece is inserted is provided between the second guide tape and the second boundary, and the first engaging piece is the second lid of the first lid plate. In a state of protruding from a part of the end side on the plate side and being inserted into the second insertion hole, the second lid plate between the second guide tape and the second boundary is engaged with the second lid plate. The second engaging piece protrudes from a part of the end side of the second lid plate on the first lid plate side, and is inserted into the first insertion hole with the first guide tape. Engaging with the first lid plate between the first boundary and the first guide tape, the first guide tape is placed on the second lid plate side in the vicinity of the end side of the first lid plate on the second lid plate side. The second guide tape is arranged along the end side of the second lid plate, and the second guide tape is arranged along the end side of the first lid plate side in the vicinity of the end side of the second lid plate on the first lid plate side. The first lid plate is further arranged at both ends of the first guide tape, on the side opposite to the end side of the first guide tape on the second lid plate side. A first slit penetrating the lid plate is arranged, and the second lid plate further has the end side of the second guide tape on the first lid plate side at both ends of the second guide tape. A second slit penetrating the second lid plate may be arranged on the opposite side to the above.

In the above configuration, the packaging container is opened by breaking the first lid plate along the first guide tape while the first engaging piece is engaged with the second lid plate or the side plate. Can be done. As a result, the packaging container can be opened smoothly. Further, it is possible to prevent the broken portion from being detached from the first guide tape and the first lid plate being torn at a portion other than the portion along the first guide tape. The same applies to the case of the second lid plate. As a result, it is possible to prevent the unintended portion from being damaged when the package is opened.

The perspective view of the packaging container is shown. The development view of the packaging container is shown. The perspective view of the state where the lid plate of a packaging container is opened is shown. The perspective view for demonstrating the opening method of a packaging container is shown. The perspective view which shows the opening process of a packaging container is shown. The perspective view of the packaging container after opening is shown. The perspective view which shows the process of closing a packaging container for return after opening is shown.

FIG. 1 shows a perspective view of the packaging container 10 as viewed from the lid plates 12 and 14, FIG. 2 shows a developed view of the packaging container 10, and FIG. 3 shows the lid plates 12 and 14 of the packaging container 10 being opened. The perspective view seen from the side of the lid plates 12 and 14 in the state is shown. The packaging container 10 has a rectangular parallelepiped shape. The packaging container 10 is used, for example, for accommodating and delivering an object. The packaging container 10 is made of a durable paper such as a thin corrugated cardboard called a micro flute. The material of the packaging container 10 may be paper other than the micro flute, and is not limited to paper, and may be plastic or the like. In this specification, for convenience, the front-back, left-right, up-down directions are defined in the directions shown in FIG. The height direction is parallel to the vertical direction.

The packaging container 10 is configured by assembling one flat plate-shaped blank BL shown in FIG. FIG. 2 is a view of the blank BL viewed from the outer surface side of the packaging container 10. The packaging container 10 includes two lid plates 12, 14, four side plates 16, 18, 20, 22, and a bottom 24.

The bottom portion 24 includes four bottom plates 24a, 24b, 24c, and 24d, each having a flat plate shape. The bottom plate 24a is adhered to the bottom plate 24b on the back surface of the adhesive region 42 (the region shown by the checkered pattern in FIG. 2). On the other hand, the bottom plate 24c is adhered to the bottom plate 24d on the back surface of the adhesive region 44 (the region shown by the checkered pattern in FIG. 2). The bottom plate 24a and the bottom plate 24c are engaged with each other at the central portion of the packaging container 10. As a result, the rectangular bottom portion 24 is formed by the four bottom plates 24a, 24b, 24c, and 24d.

A side plate 16 is connected to the front end side of the bottom plate 24a. The side plate 16 is arranged perpendicular to the bottom plate 24a. The side plate 16 has a rectangular flat plate shape. A side plate 18 is connected to the right end side of the side plate 16. The side plate 18 is also connected to the right end side of the bottom plate 24b. The side plate 18 is arranged perpendicular to the bottom plate 24b. The side plate 18 has a rectangular flat plate shape. A side plate 20 is connected to the rear end side of the side plate 18. The side plate 20 is also connected to the rear end side of the bottom plate 24c. The side plate 20 is arranged perpendicular to the bottom plate 24c and faces the side plate 16 in parallel with the bottom portion 24 in between. The side plate 20 has a rectangular flat plate shape similar to that of the side plate 16. A side plate 22 is connected to the left end side of the side plate 20. The side plate 22 is also connected to the left end side of the bottom plate 24d and the left end side of the side plate 16. The side plate 22 is arranged perpendicular to the bottom plate 24d and faces the side plate 18 in parallel with the bottom portion 24 in between. The side plate 22 has a rectangular flat plate shape similar to that of the side plate 18.

The side plate 22 is connected to the side plate 16 by adhering the adhesive piece 40 connected to the left end side of the side plate 16 to the inner surface near the front end side of the side plate 22.

A lid plate 12 is connected to the upper end of the side plate 16. The lid plate 12 is rotatably connected to the side plate 16. The lid plate 12 includes a main body 50, an engaging piece 52, a guide tape 54, an insertion hole 56, and two breaking start portions 58 and 58. The main body 50 has a substantially rectangular flat plate. The main body 50 is rotatably connected to the side plate 16 over the entire length in the left-right direction at the upper end side of the side plate 16. The length of the main body 50 in the left-right direction is the same as that of the bottom portion 24 and the side plates 16, and the length in the front-rear direction is shorter than that of the bottom portion 24 and the side plates 18 and 22. The rear end of the main body 50 is located behind the center position in the front-rear direction of the bottom portion 24 and the side plates 18 and 22.

An engaging piece 52 is connected to the rear end side 50a of the main body 50. The engaging piece 52 projects rearward from the front end side 50b of the main body 50 in a part of the center of the main body 50 in the left-right direction. The engagement piece 52 is shorter in the left-right direction than the rear portion at the end portion of the engagement piece 52 on the main body 50 side.

A guide tape 54 is attached to the inner surface of the main body 50. In FIG. 2, the guide tape 54 is shown on the outer surface of the main body 50 for the sake of explanation, but in reality, the guide tape 54 is arranged at the position shown in FIG. 2 on the inner surface of the main body 50. .. The guide tape 54 is arranged in the vicinity of the rear end side 50a of the main body 50. The guide tape 54 is arranged on the rear end side 50a, that is, parallel to the left-right direction over the entire length in the left-right direction. Even if the guide tape 54 is attached in the left-right direction by design, it may not actually be attached in parallel due to an error in the attaching device or the like.

Two breaking start portions 58, 58 are arranged on the main body 50 in front of the guide tape 54, apart from the guide tape 54 in the front-rear direction. Each fracture start portion 58 includes a plurality of slits that are intermittently arranged on a straight line. In this embodiment, the “slit” is a notch that penetrates the plate, and means that there is no gap between the plates on both sides of the notch.

The fracture start portions 58 are arranged at the left and right ends of the main body 50, respectively. The fracture start portion 58 on the right side extends from the right end side of the main body 50 toward the center in the left-right direction. The fracture start portion 58 is inclined rearward with respect to the guide tape 54, that is, in a direction approaching the guide tape 54, from the right end side of the main body 50 toward the center. The fracture start portion 58 on the left side extends from the left end side of the main body 50 toward the center in the left-right direction. The fracture start portion 58 is inclined rearward with respect to the guide tape 54, that is, in a direction approaching the guide tape 54, from the left end side of the main body 50 toward the center. The fracture start portions 58 are arranged at the left and right end portions of the main body 50, but are not arranged at the central portion except for the left and right end portions of the main body 50.

An insertion hole 56 is arranged in the main body 50 in front of the guide tape 54 and the fracture start portion 58 and behind the front end side 50b of the main body 50, that is, the boundary with the side plate 16. The insertion hole 56 is arranged slightly in front of the front end side of the lid plate 14, which will be described later. The insertion hole 56 has an opening extending in the left-right direction at the central portion, and has slits extending in the left-right direction at both left and right ends of the opening.

A lid plate 14 is connected to the upper end of the side plate 20. The lid plate 14 is rotatably connected to the side plate 20. As shown in FIG. 1, when the packaging container 10 is closed, the lid plate 14 is arranged so as to overlap the lid plate 12. On the other hand, when the packaging container 10 is open, the rear end side 60b of the lid plate 14 faces the front end side 50b of the lid plate 12 with a space in the front-rear direction.

The lid plate 14 has the same structure as the lid plate 12. That is, the lid plate 14 is engaged with the main body 50 of the lid plate 12, the engaging piece 52, the guide tape 54, the insertion hole 56, and the main body 60 corresponding to the two breaking start portions 58 and 58. The unit 62, the guide tape 64, the insertion hole 66, and the two breaking start portions 68 and 68 are provided.

The bent pieces 32 and 34 are rotatably connected to the upper ends of the side plates 18 and 22, respectively.

(How to open and close the packaging container)
Next, a method of opening and closing the packaging container 10 will be described with reference to FIGS. 3 to 6. In the packaging container 10, from the state shown in FIG. 3, first, each of the bent pieces 32 and 34 is rotated to a position facing the bottom 24, and each of the side plates 18 and 22 is rotated. Next, the lid plate 12 is first rotated with respect to the side plate 16, overlapped with the bent pieces 32 and 34, and moved to a position facing the bottom portion 24. Next, the lid plate 14 is rotated with respect to the side plate 20 and superposed on the lid plate 12. Next, the engaging piece 62 of the lid plate 14 is inserted into the insertion hole 56. As a result, when the engaging piece 62 engages with the lid plate 12, the lid plates 12 and 14 are closed as shown in FIG.

In the opening at the center of the insertion hole 56, the length in the left-right direction is slightly longer than the short portion in the left-right direction located at the end of the engagement piece 62 on the main body 60 side, while the front end of the engagement piece 62. It is shorter than the long part in the left-right direction where it is located. Further, the total length in the left-right direction including the slits at both the left and right ends of the insertion hole 56 is longer than the left-right long portion of the front end portion of the engaging piece 62. In this configuration, when the engaging piece 62 is inserted into the insertion hole 56, the engaging piece 62 widens the slit of the insertion hole 56 and passes through the insertion hole 56. When the engaging piece 62 is inserted into the insertion hole 56 to a short portion in the left-right direction on the main body 60 side, the slit of the insertion hole 56 is closed. As a result, the engaging piece 62 engages with the slit of the insertion hole 56 on the inner surface side of the lid plate 12, and the lid plate 14 is maintained in a state of not opening.

As shown in FIG. 4, when opening the packaging container 10, the main body 60 of the lid plate 14 may be broken along the break start portion 68, and the broken portion 70 may be separated from the other parts of the main body 60. can. A guide tape 64 is arranged on the lower surface of the broken portion 70. Therefore, as shown in FIG. 5, by pulling the broken portion 70 from the main body 60 together with the guide tape 64, the main body 60 can be broken to the right end side without the broken portion 70 being cut in the middle.

As a result, as shown in FIG. 6, the broken portion 70 can be separated from the main body 60. As a result, the engaging piece 62 and the main body 60 can be separated and separated. According to this configuration, the broken portion 70 can be separated along the guide tape 64 by pulling the broken portion 70. As a result, the packaging container 10 can be opened smoothly. In particular, by arranging the plurality of slits of the fracture start portion 68 so as to approach the guide tape 64 with respect to the guide tape 64, the fracture portion 70 can be guided in the vicinity of the guide tape 64. As a result, it is possible to prevent the broken portion 70 from being detached from the guide tape 64 and separated.

Further, since the broken portion 70 is separated along the guide tape 64, it is possible to prevent the main body 60 from being detached from the guide tape 64 and being torn at a portion other than the portion along the guide tape 64.

Further, by arranging the guide tape 64, it is not necessary to arrange slits for breaking, for example, perforations over the entire length of the main body 60 in the left-right direction. As a result, it is possible to avoid a decrease in the rigidity of the lid plate 14. Further, when the engaging piece 62 is inserted into the insertion hole 56, it is possible to prevent the main body 60 from bending at the break start portion 68.

Further, the guide tape 64 is arranged near the front end side 60a of the main body 60. Therefore, when the main body 60 is broken along the guide tape 64, the main body 60 on the rear side of the guide tape 64 may be broken, and on the front end side 60a side of the guide tape 64, the engaging piece 62 is removed. You don't have to break it. As a result, the force required to break the main body 60 can be reduced.

In the blank BL of the packaging container 10, the lid plates 12 and 14 are located on the same side with respect to the side plates 16, 18, 20 and 22. Further, in the blank BL, the guide tapes 54 and 64 are arranged in a straight line. Therefore, when the guide tapes 54 and 64 are attached to the blank BL, the guide tapes 54 and 64 can be attached by arranging the tapes on the blank BL in a straight line. This makes it possible to improve the work efficiency of arranging the guide tapes 54 and 64 on the blank BL.

The configuration of "arranging on a straight line" includes a configuration in which the blank BL is arranged on a straight line in the design, in addition to the configuration in which the blank BL is arranged on a straight line. That is, even if the guide tapes 54 and 64 are designed to be arranged in a straight line on the blank BL in the design, the guide tapes 54 and 64 are not necessarily in the actual blank BL due to the error of the sticking device to which the guide tapes 54 and 64 are attached. Even when the guide tapes 54 and 64 are not arranged on a straight line, they are included in the configuration of "arranging on a straight line". Further, in consideration of the error of the sticking device, the configuration in which the guide tapes 54 and 64 are arranged on the blank BL so as to be offset from the straight line is also included in the configuration of "arranging on the straight line" in the design in advance. In other words, the guide tapes 54 and 64 can be attached to the guide tapes 54 and 64 without moving the blank BL to the attachment device in a direction other than the tape application direction during the tape application operation. It is placed in a position.

Further, since each of the main body 50 of the lid plate 12 and the main body 60 of the lid plate 14 is shorter than the bottom portion 24 in the front-rear direction, the main bodies 50 and 60 have the same length as the bottom portion 24 in the front-rear direction of the bottom portion 24. The blank BL can be made smaller than the configuration.

Further, by making the lengths of the bent pieces 32 and 34 in the left-right direction shorter than those in the front-rear direction of the main bodies 50 and 60, the bent pieces 32 and 34 are arranged when the guide tapes 54 and 64 are arranged in the blank BL. It does not get in the way. In the modified example, the length of the bent pieces 32 and 34 in the left-right direction may be longer than the length of the main bodies 50 and 60 in the front-rear direction. In this case, when arranging the guide tapes 54 and 64 in the blank BL, the tape may also be attached to the bent pieces 32 and 34.

Further, as shown in FIG. 3, the blank BL is provided with connecting portions 80, 80 for connecting the left and right ends of the lid plate 14 and the bent pieces 32, 34. In the connecting portions 80 and 80, when the lid plate 14 and the bent pieces 32 and 34 are separated from each other in the flat plate, the lid plate 14 and the bent pieces 32 and 34 are connected without disconnecting only the connecting portions 80 and 80. Has been made.

The packaging container 10 is manufactured so that the unevenness of the corrugated cardboard extends in parallel with the height direction of the packaging container 10. When bending from the blank BL at the boundary between the side plates 16, 18, 20, and 22, it is possible to prevent the folding curve from being displaced due to the influence of the unevenness of the corrugated cardboard.

As shown in FIG. 7, when the lid plate 14 is broken to open the packaging container 10 and then the object is stored again using the packaging container 10, the lid plate 12 is above the broken lid plate 14. The packaging container 10 can be reused by inserting the engaging piece 52 into the insertion hole 66 of the lid plate 14. For example, it is useful when the packaging container 10 is used for round-trip delivery. Further, since the main body 60 is not significantly damaged when the lid plate 14 is broken, it is possible to prevent a situation in which the insertion hole 66 is damaged and the engaging piece 52 is not properly engaged with the main body 60. ..

In order to open the packaging container 10 from the state where the lid plate 12 is arranged upward and closed, the main body 50 is broken along the breaking start portion 58 at either the left or right end of the main body 50. As a result, the main body 50 is broken so that the engaging piece 52 is separated from the main body 50. According to this configuration, the lid plate 14 can have the same effect as when the packaging container 10 is opened by breaking the main body 60 so that the engaging piece 62 is separated from the main body 60.

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

(Modification example)
(1) In the above embodiment, the packaging container 10 has a rectangular parallelepiped shape. However, the shape of the packaging container 10 may have other shapes such as a cylindrical shape and a hexagonal column shape in addition to the rectangular parallelepiped shape.

(2) In the above embodiment, the engaging piece 62 is engaged with the main body 50 by being inserted into the insertion hole 56 of the main body 50. However, the engaging piece 62 may engage with an engaged portion such as a protrusion arranged on the main body 50 other than the insertion hole 56.

(3) In the above embodiment, the engaging piece 62 is engaged with the main body 50 by being inserted into the insertion hole 56 located at an intermediate position of the main body 50. However, the engaging piece 62 may engage with the boundary between the main body 50 and the side plate 16 or an engaged portion such as an insertion hole arranged in the side plate 16. The same applies to the engaging piece 52.

(4) In the above embodiment, the guide tapes 54 and 64 are attached to the inner surfaces of the main bodies 50 and 60. However, at least one of the guide tapes 54 and 64 may be attached to the outer surface together with or in place of the inner surface.

(5) In the above embodiment, the guide tapes 54 and 64 are arranged in the vicinity of the end sides 50a and 60a of the main bodies 50 and 60. However, the guide tapes 54 and 64 may not be arranged in the vicinity of the end sides 50a and 60a. For example, the guide tapes 54 and 64 may be arranged at the center of the main bodies 50 and 60 in the front-rear direction.

(6) In the above embodiment, the lid plates 12 and 14 have the same configuration. However, the configurations of the lid plates 12 and 14 may be different from each other. For example, the lid plate 12 has the configuration of the above embodiment, while the lid plate 14 may have a guide tape 64 attached to the outer surface of the main body 60, or the shape of the engaging piece 62 is different. May be good.

(7) In the above embodiment, in the blank BL, the lid plates 12 and 14 are arranged side by side in the stretching direction of the guide tapes 54 and 64. However, the lid plates 12 and 14 may not be arranged side by side in the stretching direction of the guide tapes 54 and 64 in the blank BL.

(8) In the above embodiment, the fracture start portions 58 and 68 are arranged at the left and right ends of the main bodies 50 and 60, respectively, and are not arranged at the central portion. However, at least one of the slits of the fracture start portions 58 and 68 may be arranged at the central portion of the main bodies 50 and 60 in the left-right direction, or may be arranged over the entire length in the left-right direction.

(9) At least one of the fracture start portions 58 and 68 may be arranged parallel to the guide tapes 54 and 64.

In addition, the technical elements described in the present 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 techniques illustrated in this specification or drawings achieve a plurality of objectives at the same time, and achieving one of the objectives itself has technical usefulness.

10: Packaging container 12, 14: Cover plate 16, 18, 20, 22: Side plate 24: Bottom 32: Folded piece 34: Folded piece 40: Adhesive piece 42: Adhesive area 44: Adhesive area 50: Main body 50a: Rear End side 50b: Front end side 52: Engagement piece 54: Guide tape 56: Insert hole 58: Break start part 60: Main body 60b: Rear end side 62: Engagement piece 64: Guide tape 66: Insert hole 68: Break start part BL: Blank

Claims (7)

A packaging container including a pair of lid plates and side plates connected to the pair of lid plates.
The pair of lid plates includes a first lid plate and a second lid plate that overlap each other in a closed state.
The first lid plate is
At the first boundary with the side plate, it faces the second boundary between the second lid plate and the side plate.
A first engaging piece that engages with the second lid plate or the side plate continuous with the second lid plate in a closed state,
A first guide tape for breaking the first lid plate at an intermediate position between the first engaging piece and the first boundary so as to be separated from the first engaging piece side and the first boundary side. , With
The second lid plate is
A second engaging piece that engages with the side plate that is continuous with the first boundary side or the first lid plate of the first lid plate with respect to the first guide tape.
A second guide tape for breaking the second lid plate at an intermediate position between the second engaging piece and the second boundary so as to be separated from the second engaging piece side and the second boundary side. ,
A bent piece connected between the pair of lid plates to the side plates via a folding curve, and is located below the pair of lid plates in a state where the pair of lid plates is closed. With folded pieces ,
The packaging container is composed of one flat plate.
In the unfolded state of the flat plate,
The first guide tape is arranged on an extension line of the second guide tape.
The pair of lid plates and the bent piece are arranged side by side in the stretching direction of the first guide tape and the second guide tape.
Wherein the first guide tape and the second guide tape, and the side plate of the bent piece that is spaced apart from the side plate than the opposite edge, the packaging container. The first lid plate further
The packaging container according to claim 1, wherein a slit penetrating the first lid plate is arranged along at least one end of the first guide tape. The second aspect of the present invention, wherein the slit located at the one end is inclined from the one end of the first guide tape toward the other end side so as to approach the first guide tape. Packaging container. The slits are arranged at both ends of the first guide tape.
The packaging container according to claim 2 or 3, wherein a slit is not arranged in the intermediate portion of the first guide tape. The second lid plate further includes a second insertion hole for inserting the first engaging piece between the second guide tape and the second boundary.
Claims 1 to 4 in which the first engaging piece engages with the second lid plate between the second guide tape and the second boundary while being inserted into the second insertion hole. The packaging container according to any one of the above. The first engaging piece protrudes from a part of the end side of the first lid plate on the second lid plate side.
The first guide tape according to any one of claims 1 to 5, wherein the first guide tape is arranged along the end side on the second lid plate side in the vicinity of the end side on the second lid plate side. Packaging container. The first lid plate further includes a first insertion hole into which the second engaging piece is inserted between the first guide tape and the first boundary.
The second lid plate further includes a second insertion hole into which the first engaging piece is inserted between the second guide tape and the second boundary.
The first engaging piece protrudes from a part of the end side of the first lid plate on the second lid plate side, and is inserted into the second insertion hole with the second guide tape. Engage with the second lid plate between the second boundary and
The second engaging piece protrudes from a part of the end side of the second lid plate on the first lid plate side, and is inserted into the first insertion hole with the first guide tape. Engage with the first lid plate between the first boundary and
The first guide tape is arranged along the end side of the second lid plate side in the vicinity of the end side of the first lid plate on the second lid plate side.
The second guide tape is arranged along the end side of the first lid plate side in the vicinity of the end side of the second lid plate on the first lid plate side.
The first lid plate further penetrates the first lid plate at both ends of the first guide tape on the side opposite to the end side of the first guide tape on the second lid plate side. 1 slit is arranged,
The second lid plate further penetrates the second lid plate at both ends of the second guide tape on the side opposite to the end side of the second guide tape on the first lid plate side. The packaging container according to claim 1, wherein two slits are arranged.

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