Packaging container and deployment body

Abstract

To provide a technique for facilitating deformation of a first state of a packaging container to a second state.MEANS FOR SOLVING THE PROBLEM: A packaging container comprises a first side plate, a second side plate facing the first side plate, and third side plates disposed between the first side plate and the second side plate. In a first state, the third side plate is connected to the first side plate and the second side plate, and one of the first side plate and the third side plate has a separation portion capable of separating a connecting part for connecting the first side plate and the third side plate from other parts. The third side plate can be moved with respect to the first side plate and the second side plate by separating the connecting part from other parts of the one of the first side plate and the third side plate by the separation portion, and thereby the packaging container can be deformed from the first state to a second state. In the second state, the interval between the first side plate and the second side plate is larger than that in the first state, and at least part of the third side plate is disposed so as to rise from the first state with respect to the second side plate, and thus is disposed between the first side plate and the second side plate.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This specification discloses a technology relating to a packaging container. [Background technology]

[0002] Patent Document 1 discloses a delivery box with a changeable volume, in which the volume can be changed by changing the height of the delivery box. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-138415 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above technology, a delivery box is assembled from the unfolded body in either a high or low state, and no consideration is given to transforming from one of the high or low states to the other.

[0005] The present specification provides a technique for facilitating the transformation of a packaging container from a first state to a second state. [Means for solving the problem]

[0006] This specification discloses a packaging container. In a first aspect, the packaging container includes a first side plate, a second side plate facing the first side plate, and a third side plate disposed between the first side plate and the second side plate, and in a first state, the third side plate is connected to each of the first side plate and the second side plate, and a specific side plate among the first side plate and the third side plate has a separation part that allows the connection part between the first side plate and the third side plate to be separated from other parts of the specific side plate, and the separation part allows the connection part to be separated from other parts of the specific side plate. By being separated from the first side plate at a certain location, the third side plate can move relative to the first side plate and the second side plate, and the packaging container can be transformed from the first state to a second state, and in the second state, the distance between the first side plate and the second side plate is larger than the distance between the first side plate and the second side plate in the first state, and at least a portion of the third side plate is positioned upright relative to the second side plate from the first state and is positioned between the first side plate and the second side plate.

[0007] In this configuration, in the first state, the third side plate is connected to each of the first and second side plates, thereby storing an object in a space defined by the first, second, and third side plates. When transforming from the first state to the second state, the connecting portion is separated from other portions of the specific side plate by the separation portion, thereby making the third side plate movable relative to the first and second side plates. This allows the third side plate to rise up relative to the first and second side plates. This allows for easy transformation from the first state to the second state, which is higher than the first state.

[0008] In a second aspect, in the first aspect described above, in the first state, the first side plate and the third side plate are arranged one on top of the other, and the first side plate and the third side plate may be surface-bonded to each other at the connection point.

[0009] With this configuration, the connection between the first side plate and the third side plate can be released by cutting the connection point, which is surface-bonded by the detachment portion, from either the first side plate or the third side plate.

[0010] In a third aspect, in the first or second aspect above, the third side plate may have a pair of third side plate portions extending from each of both end edges of the second side plate, and each of the pair of third side plate portions may be connected to the second side plate.

[0011] According to this configuration, it is possible to easily produce a packaging container from a single flat-plate-shaped deployable body.

[0012] In a fourth aspect, in any one of the first to third aspects above, the device may further include a cover plate that closes the opening defined by the first side plate, the second side plate, and the third side plate in the first state, and the cover plate may be rotatably connected to an edge of the second side plate.

[0013] According to this configuration, a packaging container can be produced from one flat plate-shaped deployable body.

[0014] In a fifth aspect, in the above fourth aspect, in the second state, the third side plate, a portion of the cover plate on the second side plate side, and a portion of at least one of the first side plate and the second side plate are arranged upright from the second side plate, and the first side plate and the cover plate may close an opening defined by the third side plate arranged upright from the second side plate, a portion of the cover plate on the second side plate side, and a portion of at least one of the first side plate and the second side plate.

[0015] In the second state, the opening is closed by the cover plate and the first side plate, so the cover plate can be made smaller than in a configuration in which the opening is closed only by the cover plate.

[0016] In a sixth aspect disclosed in the present specification, the packaging container is a packaging container that can be transformed from a first state to a second state, and comprises a first side plate, a second side plate opposite the first side plate, and a third side plate arranged between the first side plate and the second side plate and connected to the second side plate via a fold line, and in the first state, the third side plate is folded relative to the second side plate, and the first side plate, the second side plate, and the third side plate are arranged overlapping each other, and in the second state, the third side plate is raised relative to the second side plate, and the first side plate and the second side plate are arranged spaced apart.

[0017] The packaging container in the first state is suitable for packaging thin objects such as documents. The packaging container in the second state can accommodate thick objects. With this configuration, the packaging container can be easily transformed from the first state to the second state by raising the third side plate relative to the second side plate.

[0018] The development body for producing the packaging container of any one of the first to sixth aspects described above is also novel and useful. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 2 is a perspective view of the packaging container of the first embodiment in a first state. [Figure 2] FIG. 2 is a perspective view of the packaging container in the first state of the first embodiment in a closed state. [Figure 3] FIG. 2 is a development view of the packaging container of the first embodiment. [Figure 4] FIG. 2 is a perspective view of the packaging container of the first embodiment in the process of being assembled from the first state to the second state. [Figure 5] 5 is a perspective view of the packaging container in the middle of being assembled from the first state to the second state, following FIG. 4. [Figure 6] FIG. 4 is a perspective view of the packaging container in the second state of the first embodiment. [Figure 7] FIG. 10 is a perspective view of the packaging container of the first embodiment in a second state when it is closed. [Figure 8] FIG. 10 is a perspective view of the packaging container in the first state of the second embodiment in a closed state. [Figure 9] FIG. 10 is a perspective view of the packaging container of the second embodiment in a second state when it is closed. [Figure 10] FIG. 10 is a development view of a packaging container according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] (First Example) The packaging container 10 shown in FIG. 1 is used to package and transport an object. The use of the packaging container 10 is not limited to transportation, and it may also be used for protection, storage, etc. The front-to-back, left-to-right, and up-to-down directions included in this specification are defined for ease of explanation and do not define the position during actual use. The packaging container 10 is used by containing and sealing an object in either a first state shown in FIG. 1 or a second state shown in FIG. 6.

[0021] As shown in FIG. 3, the packaging container 10 is produced by folding a single flat, unfoldable body BL1 along multiple fold lines. Each of the multiple fold lines has at least one of a groove and a slit along the fold line to allow for easy folding along the fold line. A slit is a cut that penetrates the flat plate with no or only a small gap. The multiple fold lines are represented by thin dashed lines. Furthermore, areas where adhesive is applied are represented by thin parallel lines. Note that the parallel thin lines indicate whether the surface to which adhesive is applied is the surface shown in FIG. 3 or the back surface. The unfoldable body BL1 is produced from a single sheet of corrugated cardboard. Note that the unfoldable body BL1 may also be produced from paper other than corrugated cardboard or from resin.

[0022] The packaging container 10 includes five side plates 12, 14, 16, 18, 20, and 30. Each of the plates 12, 14, 16, 18, 20, and 30 of the packaging container 10 is made of a flat plate.

[0023] The side plate 16 is disposed at the lower end of the packaging container 10. The side plate 16 has a rectangular shape. The side plate 12 is connected to the rear edge of the side plate 16 via a fold line. The length of the side plate 12 in the front-to-rear direction is shorter than the length of the side plate 16 in the front-to-rear direction. The side plate 12 has a generally rectangular shape with rounded corners located at both ends of the edge opposite the side plate 16. A fold line 12b is disposed at the midpoint of the side plate 12 in the front-to-rear direction. The fold line 12b is disposed parallel to the fold line at the boundary between the side plate 16 and the side plate 12. The fold line 12b is disposed parallel to the left-to-right direction. An adhesive region 12a to which an adhesive is applied is provided on the underside of the side plate 12 (the back surface in FIG. 3). The adhesive region 12a is covered with release paper, and the release paper is peeled off when the side plate 12 is to be adhered.

[0024] The side panel 14 is connected to the front edge of the side panel 16 via a fold line. The length of the side panel 14 in the front-to-rear direction is shorter than the length of the side panel 16 in the front-to-rear direction. The side panel 14 has a generally rectangular shape with rounded corners at both ends of the edge opposite the side panel 16. A fold line 14b is located at the middle position of the side panel 14 in the front-to-rear direction. The fold line 14b is located parallel to the fold line at the boundary between the side panel 16 and the side panel 14. The fold line 14b is located parallel to the left-to-right direction. The distance from the fold line 14b to the fold line at the boundary between the side panel 16 and the side panel 14 is the same as the distance from the fold line 12b to the fold line at the boundary between the side panel 16 and the side panel 12.

[0025] A fold line 14d is also arranged on side plate 14. Fold line 14d is arranged parallel to fold line 14b and at a position farther from side plate 16 than fold line 14b. Engagement pieces 14c are arranged on each end of fold line 14d on side plate 14. Engagement pieces 14c extend from fold line 14d toward side plate 16, curve, and are partially separated from the rest of side plate 14 by a slit that extends parallel to fold line 14d in the left-right direction toward the edge of side plate 14.

[0026] The side plate 14 has a pair of protrusions 14a, 14a on the edge opposite the side plate 16, protruding away from the side plate 16. The pair of protrusions 14a, 14a are arranged spaced apart from each other in the left-right direction.

[0027] Adhesive pieces 50, 52 are arranged on both left and right edges of side panel 14 between fold line 14b of side panel 14 and the fold line at the boundary between side panel 16 and side panel 14, respectively.

[0028] A side panel 20 is connected to the right edge of the side panel 16 via a fold line. The side panel 20 includes a flap 22, a side panel portion 24, a fold piece 26, an upper end piece 27, and an adhesive piece 28. The side panel portion 24 has a rectangular shape. The length of the side panel portion 24 in the front-to-rear direction is approximately the same as the length of the side panel 16 in the front-to-rear direction. The length from the fold line at the boundary of the side panel portion 24 with the side panel 16 to the edge opposite the side panel 16 is approximately the same as the distance from fold line 14b to the fold line at the boundary between the side panel 16 and the side panel 14 and the distance from fold line 12b to the fold line at the boundary between the side panel 16 and the side panel 12.

[0029] The flap 22 is connected to the rear end edge of the side plate portion 24 via a fold line. A folding piece 26 is connected to the end edge of the side plate portion 24 opposite the side plate 16, i.e., the upper end edge, via a fold line. The folding piece 26 is connected over the entire length of the side plate portion 24 in the front-to-rear direction. A slit 26a is arranged in the folding piece 26. The slit 26a penetrates the folding piece 26. The slit 26a extends over the entire length of the folding piece 26 in the left-right direction and extends slightly rearward at both left-right ends of the folding piece 26. The slit 26a is arranged in a position that overlaps with the engagement piece 14c in the second state shown in FIG. 6.

[0030] An upper end piece 27 and an adhesive piece 28 are disposed on the edge of the folding piece 26 opposite the side panel portion 24. The upper end piece 27 and the adhesive piece 28 are disposed side by side in the front-to-rear direction. In the first state shown in FIG. 1 , the rear end portion of the adhesive piece 28 overlaps with the protruding portion 14a, and is positioned and shaped so as not to protrude further rearward than the protruding portion 14a. An adhesive region 28a for adhering to the underside of the side panel 14 is disposed on the upper surface (front surface in FIG. 3 ) of the adhesive piece 28. The upper end piece 27 and the adhesive piece 28 have the same length from the boundary with the folding piece 26 to the opposite edge. The adhesive piece 28 is connected to the upper end piece 27 via a separation portion 40. The separation portion 40 has perforations with intermittent slits. The separation portion 40 slopes forward as it progresses from the end on the folding piece 26 side toward the opposite side of the folding piece 26. The cut-off portion 40 bends parallel to the front-to-rear direction at the end on the side of the bent piece 26 and extends along the fold line at the boundary between the bent piece 26 and the adhesive piece 28. The adhesive piece 28 is connected to the other portions 22, 24, 26, and 27 of the side panel 20 via the cut-off portion 40.

[0031] A side panel 30 is connected to the left edge of the side panel 16 via a bend line. The side panel 30 includes a flap 32, a side panel portion 34, a bent piece 36, an upper end piece 37, and an adhesive piece 38, which are similar to the flap 22, side panel portion 24, bent piece 26, upper end piece 27, and adhesive piece 28 of the side panel 20. The side panel 30 has a symmetrical shape with the side panel 16 in between. The side panel 30 includes a slit 36a, an adhesive area 38a, and a tear-off portion 42, which are similar to the slit 26a, adhesive area 28a, and tear-off portion 40 of the side panel 20.

[0032] (Assembly method from the deployable body to the first state) Next, a method for assembling the deployable body BL1 shown in Fig. 3 to the first state shown in Fig. 1 will be described. In the deployable body BL1, the adhesive piece 50 is adhered to the front end of the side panel portion 24 of the side panel 20, and the adhesive piece 52 is adhered to the front end of the side panel portion 34 of the side panel 30. In Fig. 3, the adhesive pieces 50 and 52 are shaded across the entire surface, but in reality, the adhesive piece 50 is adhered to a portion of the side panel portion 24 that is further forward than the fold line 20a, and the adhesive piece 52 is adhered to a portion of the side panel portion 34 that is further forward than the fold line 30a. The side panel 20 is bent along the fold line 20a, and the side panel 30 is bent along the fold line 30a. As a result, the side panel 16, the side panel 20, and the side panel 14 are arranged overlapping each other, and the side panel 16, the side panel 30, and the side panel 14 are arranged overlapping each other.

[0033] Adhesive strip 28 is adhered to side panel 14 by adhesive applied to adhesive region 28a. On side panel 14, adhesive strip 28 is adhered to adhesive region 14f, which overlaps adhesive region 28a. Similarly, adhesive strip 38 is adhered to side panel 14 by adhesive applied to adhesive region 38a. On side panel 14, adhesive strip 38 is adhered to adhesive region 14g, which overlaps adhesive region 38a.

[0034] This completes the first state shown in FIG. 1 . In the first state, the side panels 20 and 30 are folded so as to overlap the side panel 16. The side panel 14 is in surface contact with the side panels 20 and 30. In the first state, the side panels 16 and 14 are folded at the front end along a fold line so as to overlap. In the first state, the vertical length of the space between the side panels 16 and 14 is almost zero, allowing the packaging container 10 to be used for packaging documents, etc., like an envelope. In the first state, the side panel 12 can be folded relative to the side panel 16 and overlapped on the side panel 14 to close the opening of the space surrounded by the side panels 14, 16, 20, and 30. The release paper in the adhesive region 12a can be peeled off to adhere the side panel 12 to the side panel 14.

[0035] (How to transform from the first state to the second state) Next, a method for transforming the packaging container 10 from the first state to the second state shown in FIG. 6 will be described. As shown in FIG. 2, the packaging container 10 may be shipped in the first state before use, with the side plate 12 overlapping the side plate 14. At the time of shipping, the side plate 12 is not bonded to the side plate 14. This allows the packaging container 10 to be transported in as small a size as possible. In this case, the packaging container 10 is transformed from the state shown in FIG. 2 to the first state shown in FIG. 1, and then transformed from the first state to the second state shown. In the state shown in FIG. 2, the flaps 22 and 32 are folded together with the side plate 12 so as to overlap the side plate portions 24 and 34. In this state, the flaps 22 and 32 are sized so as not to overlap the side plate 14.

[0036] From the first state, the protrusions 14a, 14a are pulled upward together with the adhesive pieces 28, 38 overlapping the backsides of the protrusions 14a, 14a. This breaks the separation portions 40, 42, and the adhesive pieces 28, 38 are separated from the rest of the side panels 20, 30 and pulled upward together with the side panel 14. By arranging the protrusions 14a, 14a on the side panel 14, the user can know which part of the side panel 14 to grab and pull up. The protrusions 14a, 14a also provide a hook for the user's fingers, making pulling up easier. Because the flaps 22, 32 do not overlap the side panel 14, they do not get in the way when pulling up the side panel 14.

[0037] As shown in Figure 4, when the side panel 14 is pulled up from the first state, the side panel 14 rotates about the fold line at the boundary with the side panel 16 and rises up relative to the side panel 16. As a result, the side panels 20, 30 widen at the fold lines 20a, 30a as the side panel 14 rises up. As a result, the side panels 20, 30 rise up relative to the side panel 16, just like the side panel 14. As shown in Figure 5, the bent piece 26 of the side panel 20 is bent relative to the side panel portion 24 so as to face the side panel 16. Similarly, the bent piece 36 is bent relative to the side panel portion 34 so as to face the side panel 16.

[0038] As shown in FIG. 6 , the side panel 14 is bent along the fold line 14b to face the side panel 16. As a result, the engaging pieces 14c, 14c are positioned so that they overlap the slits 26a, 36a, respectively. The engaging pieces 14c, 14c are inserted into the slits 26a, 36a, respectively. The engaging pieces 14c press downward around the slit 26a of the folding piece 26. Because the slit 26a extends slightly in the front-rear direction at both left-right ends of the folding piece 26, the area where the slit 26a is formed is deformed downward along with the engaging piece 14c. As a result, the engaging piece 14c inserted into the slit 26a is pinched by the folding piece 26 at the downwardly deformed portion of the folding piece 26, preventing the engaging piece 14c from falling out of the slit 26a. The same applies to the slit 36a. This completes the assembly of the packaging container 10 in the second state. The engagement pieces 14c, 14c engage with the bending pieces 26, 36, respectively, thereby preventing the side panel 14 from moving upward. The engagement pieces 14c, 14c are located at both ends of the bending line 14d. By lightly bending the side panel 14 along the bending line 14d, the engagement pieces 14c, 14c can be easily inserted into the slits 26a, 36a.

[0039] As shown in Figure 7, side plate 12 is rotated around the fold line at the boundary with side plate 16 and stands up relative to side plate 16. Side plate 12 is folded along fold line 12b so as to face side plate 16. As a result, packaging container 10 is closed. In this state, side plate 16 is surrounded by the portion of side plate 14 closer to side plate 16 than fold line 14b (hereinafter referred to as "side plate portion 14e"), the portion of side plate 12 closer to side plate 16 than fold line 12b (hereinafter referred to as "side plate portion 12e (see Figure 6)"), and side plate portions 24 and 34. The opening defined by side panel portions 12e, 14e, 24, and 34 is closed by a portion of side panel 12 opposite side panel 16 from fold line 12b (hereinafter referred to as "lid portion 12d") and a portion of side panel 14 opposite side panel 16 from fold line 14b (hereinafter referred to as "lid portion 14h"). Side panel 12 can be adhered to side panel 14 by peeling off the release paper from adhesive region 12a. By closing the opening defined by side panel portions 12e, 14e, 24, and 34 with lid portions 12d and 14h, each lid portion can be made smaller than in a configuration in which the opening is closed by a single lid portion.

[0040] In the packaging container 10, from the first state, the connection between the side plates 20, 30 and the side plate 14 can be severed by cutting the adhesive pieces 28, 38 from the other portions of the side plates 20, 30 along the cutting portions 40, 42. This allows the side plate portions 12e, 14e, 24, 34 to be raised relative to the side plate 16, making it easy to produce the packaging container 10 in the second state.

[0041] The separation portion 40 is disposed at the boundary between the upper end piece 27 and the adhesive piece 28 so as to be inclined forward. With this configuration, the separation portion 40 can be easily cut. The same is true for the separation portion 42. In a modified example, instead of the separation portions 40 and 42, a separation portion that can separate the adhesive regions 14f and 14g from the rest of the side panel 14 may be disposed on the side panel 14.

[0042] The side plates 20, 30 are connected to the left and right edges of the side plate 16 via fold lines. The side plates 12, 14 are connected to the front and rear edges of the side plate 16 via fold lines. This makes it easy to produce the packaging container 10 from the unfoldable body BL1. In a modified example, the side plates 20, 30 may be connected to each other on the inner surface of the side plate 14 in the first state. In this case, the side plates 20, 30 may be separated when the side plate 14 is pulled up during the transformation from the first state to the second state.

[0043] (Correspondence) Side plate 14 is an example of a "first side plate," side plate 16 is an example of a "second side plate," side plates 20 and 30 are examples of a "third side plate," side plates 20 and 30 are each an example of a "third side plate portion" and a "specific side plate," and side plate 12 is an example of a "cover plate." Adhesive areas 28a, 38a, 14f, and 14g are examples of "connecting points."

[0044] (Second Example) A packaging container 210 of a second embodiment will be described with reference to FIGS. 8 to 10. Compared to the packaging container 10, the vertical length of the packaging container 210 in the second state shown in FIG. 9 is shorter than the vertical length of the packaging container 10 in the second state. As shown in FIG. 10, the packaging container 210 in the first state is produced by assembling a single flat-plate-shaped deployable body BL2. The packaging container 210 has side plates 216, 220, and 230 similar to the side plates 16, 20, and 30 of the packaging container 10. Like the side plate 20, the side plate 220 has a fold line 220a, a flap 222, a side plate portion 224, a folding piece 226, an upper end piece 227, an adhesive piece 228, and a tear-off portion 240. The side plate portion 224 has a shorter vertical length in the second state than the side plate portion 24. Similar to the side panel 30, the side panel 230 includes a folding line 230a, a flap 232, a side panel portion 234, a folding piece 236, an upper end piece 237, an adhesive piece 238, and a separation portion 242. The side panel portions 224 and 234 are shorter in the vertical direction in the second state than the side panel portions 24 and 34.

[0045] Adhesive piece 228 is surface-bonded to adhesive area 214f ​​of side panel 214 at adhesive area 228a. Adhesive piece 238 is surface-bonded to adhesive area 214g of side panel 214 at adhesive area 238a. Side panel 214 has a pair of protrusions 214a similar to the pair of protrusions 14a. Side panel 214 has a side panel portion 214e and a lid portion 214h similar to side panel portion 14e and lid portion 14h. Side panel portion 214e and lid portion 214h are connected via a bend line.

[0046] The side plate 212 includes a side plate portion 212e and a lid portion 212d similar to the side plate portion 12e and the lid portion 12d. The side plate portion 212e and the lid portion 212d are connected via a bend line. The side plate 212 includes an insertion piece 212f formed by a pair of notches 212k, 212k on the edge opposite the side plate 216. As shown in FIG. 8, in the first state, the insertion piece 212f is inserted into a slit 214j arranged in the side plate 214. As a result, the side plate 212 engages with the side plate 214, thereby closing the packaging container 210. Furthermore, as shown in FIG. 9, in the second state, the insertion piece 212f is inserted below a recess 214h arranged in the side plate 214. As a result, the side plate 214 is inserted into the notches 212k, 212k of the side plate 212, and the side plate 214 is sandwiched between the side plates 212, thereby closing the packaging container 210. The recess 214h is disposed between the pair of protrusions 214a, 214a of the side plate 214. The recess 214h is formed by recessing the edge of the side plate 214 opposite to the side plate 216 toward the side plate 216. Because the fold line 212g is disposed in the side plate 212, the side plate 212 can be easily bent when the insertion piece 212f is inserted into the slit 214j and the recess 214h.

[0047] Although the embodiments of the present invention have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and alterations of the specific examples exemplified above.

[0048] For example, in the packaging container 10, the side plate 12 may be produced separately from the side plates 14, 16, 20, and 30. The side plate 12 may be assembled from a deployment body other than the deployment body BL1. The same applies to the side plate 212 in the packaging container 210. In other words, in the "packaging container," the "lid plate" may be produced separately from the parts other than the lid plate.

[0049] The side plate 14 and the side plates 20 and 30 may be connected by a method other than surface bonding.

[0050] In the first state, the packaging container 10 may have side panel portions that stand up from the side panels 14, 16. At least one of the side panels 20, 30 and the side panels 14 and 16 may have side panel portions.

[0051] Furthermore, the technical elements described in this specification or drawings may exhibit technical utility either alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technologies illustrated in this specification or drawings simultaneously achieve multiple objectives, and achieving one of those objectives is itself technically useful. [Explanation of symbols]

[0052] 10: Packaging container, 12, 14, 16, 20, 30: Side plate, 12d: Lid part, 12e: Side plate part, 14e: Side plate part, 14f, 14g: Adhesive area, 14h: Lid part, 24, 34: Side plate part, 28, 38: Adhesive piece, 28a, 38a: Adhesive area, 40, 42: Separation part, BL1: Expanded body

Claims

1. A packaging container, A first side plate; a second side plate facing the first side plate; a third side plate disposed between the first side plate and the second side plate, In a first state, the third side plate is connected to each of the first side plate and the second side plate, a specific side plate among the first side plate and the third side plate includes a separation portion that allows a connection portion between the first side plate and the third side plate to be separated from other portions of the specific side plate; The connecting portion is separated from the other portion of the specific side plate by the separating portion, the third side plate is movable relative to the first side plate and the second side plate, The packaging container is transformable from the first state to a second state, In the second state, a distance between the first side plate and the second side plate is larger than a distance between the first side plate and the second side plate in the first state; A packaging container, wherein at least a portion of the third side plate is positioned upright relative to the second side plate from the first state and is positioned between the first side plate and the second side plate.

2. In the first state, The first side plate and the third side plate are arranged one on top of the other, The packaging container according to claim 1 , wherein the first side panel and the third side panel are surface-bonded to each other at the connecting portion.

3. the third side plate includes a pair of third side plate portions extending from both end edges of the second side plate, The packaging container according to claim 1 or 2, wherein each of the pair of third side panel portions is connected to the second side panel.

4. a cover plate that closes an opening defined by the first side plate, the second side plate, and the third side plate in the first state; The packaging container according to claim 1 or 2, wherein the cover plate is rotatably connected to an edge of the second side plate.

5. In the second state, the third side plate, a portion of the cover plate on the second side plate side, and a portion of at least one of the first side plate and the second side plate are arranged to rise from the second side plate, The packaging container according to claim 4, wherein the first side panel and the cover panel close an opening defined by the third side panel arranged upright from the second side panel, a portion of the cover panel on the second side panel side, and a portion of at least one of the first side panel and the second side panel.

6. A packaging container that can be transformed from a first state to a second state, A first side plate; a second side plate facing the first side plate; a third side plate disposed between the first side plate and the second side plate and connected to the second side plate via a bending line, In the first state, the third side plate is bent relative to the second side plate, and the first side plate, the second side plate, and the third side plate are arranged to overlap each other; In the second state, the third side plate is raised relative to the second side plate, and the first side plate and the second side plate are disposed apart from each other; the packaging container further includes a cover plate that closes an opening defined by the first side plate, the second side plate, and the third side plate in the first state, The cover plate is the second side plate is connected to the second side plate via a bending line so as to be bendable between a position where the opening is closed and a position where the opening is opened, In the first state, when the opening is opened, the opening is not directly connected to the third side plate, When the cover plate is at a position where it closes the opening in the first state, the first side plate and the cover plate are each disposed to overlap the second side plate over their entire surfaces. packaging container.

7. A deployment body that is made up of a single flat plate and that can assemble the packaging container according to claim 1 or 6.

Images