Packaging container

Abstract

To provide a packaging container that can prevent taint from adhering to a bottom surface part, without impairing a capability of storing an object to be stored and stability as much as possible.SOLUTION: A packaging container comprises a container main body (3) and a lid body. The container main body (3) has a bottom surface part, a main body peripheral wall part extending upward from the bottom surface part and a main body flange part extending outward from the main body peripheral wall part. Leg parts (41), which further extend downward from a lowest point of the bottom surface part to contact a part to be placed, are formed in the main body peripheral wall part. The main body peripheral wall part has: first regions (A1) extending toward the bottom surface part more than the leg parts (41); second regions (A2) extending toward the main body flange part more than the leg parts (41); and third regions (A3) extending to a position in a circumferential direction at which the leg parts (41) are not formed.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a packaging container. [Background technology]

[0002] For example, packaging containers are used to store boxed lunches, prepared meals, fresh foods, etc., at retail stores such as supermarkets, convenience stores, and department stores. Such packaging containers include a container body and a lid that engages with the container body, and the container body is placed on a support portion such as a table or display stand.

[0003] The container body may be placed with the entire bottom surface in contact with the receiving part, but in that case, dirt on the receiving part will adhere to the bottom surface. Therefore, a packaging container is known in which parts of the bottom surface protrude downward to form legs, thereby reducing the contact area with the receiving part and making it less likely for dirt to adhere. An example of such a packaging container is disclosed in JP 2013-67400 A (Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2013-67400 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the bottom surface is the surface on which the stored items are placed, and if legs are formed on the bottom surface as in Patent Document 1, the area on which the stored items can actually be placed may be reduced, or the stability of the stored items may be compromised due to unevenness.

[0006] Therefore, it is desirable to realize a packaging container that can prevent dirt from adhering to the bottom surface without impairing the capacity and stability of the contents to be contained as much as possible. [Means for solving the problem]

[0007] The packaging container according to the present invention comprises: A packaging container comprising a container body and a lid body, The container body has a bottom surface, a main body peripheral wall portion extending upward from the bottom surface, and a main body flange portion extending outward from the main body peripheral wall portion, a plurality of legs extending below the lowest point of the bottom surface and contacting the placement portion are formed on the main body peripheral wall; The main body peripheral wall portion has a first region that extends closer to the bottom surface portion than the legs at a circumferential position where the legs are formed, a second region that extends closer to the main body flange portion than the legs at the same circumferential position as the first region, and a third region that extends to a circumferential position where the legs are not formed.

[0008] According to this configuration, the legs extend below the lowest point of the bottom surface and contact the receiving portion, thereby separating the bottom surface from the receiving portion, thereby preventing the adhesion of dirt to the bottom surface. Because the legs are formed on the main body peripheral wall portion rather than the bottom surface, the bottom surface, which serves as the receiving surface for placing the contents, can be formed relatively wide and flat. This prevents a decrease in the storage capacity of the contents and instability of the contents. These features make it possible to provide a packaging container that can prevent the adhesion of dirt to the bottom surface without minimizing the loss of storage capacity and stability of the contents. Furthermore, by forming the main body peripheral wall portion to have three regions, the first region, the second region, and the third region, the multiple legs are appropriately distributed, making it easier to place the container body on the receiving portion in a balanced manner.

[0009] Preferred embodiments of the present invention will be described below, but the scope of the present invention is not limited to the preferred embodiments described below.

[0010] In one embodiment, It is preferable that the leg portions are formed so as to extend downward from a position higher than the uppermost point of the bottom surface portion of the main body peripheral wall portion.

[0011] According to this configuration, a part of the bottom surface side of the main body peripheral wall can be used as a placement surface on which to place the contained items, making it easier to maintain a high capacity for containing the contained items.

[0012] In one embodiment, It is preferable that the length of the first region be shorter than the length of the second region in the inward / outward direction of the main body peripheral wall portion.

[0013] With this configuration, the position of the legs is closer to the bottom surface than the central position in the inward / outward direction on the main body peripheral wall, so the bottom surface can be spaced apart from the mounting portion without making the height of the legs excessively high.

[0014] In one embodiment, The lid has a top surface portion that is slightly larger than the bottom surface portion, and a lid peripheral wall portion that extends downward from the top surface portion, It is preferable that the leg portions are formed so as to extend linearly in parallel or approximately parallel to the boundary line between the top surface portion and the lid peripheral wall portion.

[0015] With this configuration, by aligning the legs of the container body of one packaging container with the boundary line between the top surface and peripheral wall of the lid of another packaging container, it is easy to stack multiple packaging containers in an aligned state.

[0016] In one embodiment, The container body and the lid body are formed in a polygonal shape in a plan view, It is preferable that at least one leg portion is provided on each side of the main body peripheral wall portion.

[0017] With this configuration, one or more legs are aligned along the boundary line between the top surface and the peripheral wall of the lid, which form each side of the lid, which is polygonal in plan view, thereby enabling positioning when stacking multiple packaging containers and preventing subsequent shifting.

[0018] In one embodiment, It is preferable that at least two of the legs are provided on each side of the main body peripheral wall so that a pair of the legs are located on both sides of each corner of the bottom surface.

[0019] With this configuration, a pair of legs runs along the boundary line between the top surface and the lid's peripheral wall on both sides of each corner of the lid, which has a polygonal shape when viewed from above, thereby increasing stability when multiple packaging containers are stacked.

[0020] Further features and advantages of the present invention will become more apparent from the following description of exemplary and non-limiting embodiments, which is given with reference to the drawings. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is an exploded perspective view of a packaging container according to a first embodiment; [Figure 2] Exploded front view of packaging container [Figure 3] Exploded side view of packaging container [Figure 4] Plan view of the container body [Figure 5] Plan view of the lid [Figure 6] Cross-section of a packaging container [Figure 7] Schematic diagram showing three areas of the main body peripheral wall [Figure 8] Schematic front view of stacked packaging containers [Figure 9] Schematic plan view of stacked packaging containers [Figure 10] FIG. 10 is an exploded perspective view of a packaging container according to a second embodiment. [Figure 11] Exploded front view of packaging container [Figure 12] Exploded side view of packaging container [Figure 13] Plan view of the container body [Figure 14] Plan view of the lid DETAILED DESCRIPTION OF THE INVENTION

[0022] [First embodiment] A first embodiment of a packaging container will be described with reference to the drawings. In this embodiment, a packaging container (food packaging container) 1 that contains food such as fresh food or prepared food as a contained object will be described as an example.

[0023] In the following description, the direction toward the inside of the packaging container 1 (direction from the outer edge toward the center) is referred to as "inward," and the direction toward the outside of the packaging container 1 (direction from the center toward the outer edge) is referred to as "outward." The direction connecting the center and the outer edge is referred to as the "inward-outward direction R."

[0024] As shown in FIGS. 1 to 3, the packaging container 1 includes a container body 3 and a lid body 5. The packaging container 1 is formed by sheet molding. The container body 3 and the lid body 5 that constitute the packaging container 1 are each formed by sheet molding. In this embodiment, the container body 3 is formed by thermoforming a foamed thermoplastic resin sheet, and the lid body 5 is formed by thermoforming a non-foamed thermoplastic resin sheet.

[0025] The thermoplastic resin foam sheet constituting the container body 3 includes a thermoplastic resin foam layer mainly made of a thermoplastic resin. The thermoplastic resin constituting the thermoplastic resin foam layer is not particularly limited. For example, general thermoplastic resins such as polyolefins (polyethylene, polypropylene, etc.), polyvinyl chloride, polystyrene, polyesters (polyethylene terephthalate, etc.), and acrylic resins can be used as appropriate. Each of these may be a homopolymer, a copolymer with other monomers, a mixture with other resins, or a combination thereof.

[0026] The thermoplastic resin foam sheet may also include a non-foamed thermoplastic resin layer mainly made of a thermoplastic resin on at least one side of the foamed thermoplastic resin layer. The thermoplastic resin constituting the non-foamed thermoplastic resin layer is not particularly limited. For example, common thermoplastic resins such as polyolefins (polyethylene, polypropylene, etc.), polyvinyl chloride, polystyrene, polyesters (polyethylene terephthalate, etc.), and acrylic resins can be used as appropriate. Each of these may be a homopolymer, a copolymer with other monomers, a mixture with other resins, or a combination thereof.

[0027] The layers can be laminated by various methods such as co-extrusion, extrusion lamination, and thermal lamination.

[0028] The non-foamed thermoplastic resin sheet constituting the lid 5 has a non-foamed thermoplastic resin layer mainly made of a thermoplastic resin. The thermoplastic resin constituting the non-foamed thermoplastic resin layer is not particularly limited, and the various resins described above for the container body 3 can be used as appropriate.

[0029] The container body 3 may also be formed by thermoforming a non-foamed thermoplastic resin sheet, similar to the lid 5. The container body 3 may be formed to be colored or colorless. From the viewpoint of visibility of the contents contained therein, the lid 5 is preferably formed to be colorless.

[0030] In this embodiment, the packaging container 1 (container body 3 and lid body 5) is formed in a polygonal shape in a plan view. "Polygonal shape in a plan view" means that the external shape in a plan view is polygonal or is approximately polygonal as a whole. Therefore, as long as the external shape in a plan view of the container body 3 and the lid body 5 is approximately polygonal as a whole, at least one of the sides may be formed to be bent or curved. Furthermore, at least one of the vertices may be formed to be rounded, corner-cut, or notched, or may be formed to protrude outward.

[0031] As shown in Figures 4 and 5, the packaging container 1 of this embodiment is formed in a rectangular shape when viewed from above. The container body 3 and lid body 5 that constitute the packaging container 1 are each formed in a rectangular shape when viewed from above. Furthermore, in this embodiment, the packaging container 1 (container body 3 and lid body 5) is formed in a rectangular shape when viewed from above, having a pair of long sides and a pair of short sides. The container body 3 and lid body 5 are formed in a rectangular shape when viewed from above, with all four corners rounded.

[0032] 1 to 3, the container body 3 has a bottom surface portion 31, a main body peripheral wall portion 32, a main body flange portion 33, and a main body skirt portion 34. These are integrally formed and arranged in the order of main body peripheral wall portion 32, main body flange portion 33, and main body skirt portion 34 from the bottom surface portion 31 outward.

[0033] The bottom surface portion 31 forms the bottom of the container body 3. The bottom surface portion 31 is formed in a rectangular shape in a plan view. The bottom surface portion 31 serves as a mounting portion on which food, which is the object to be contained, is mainly placed. The bottom surface portion 31 has a central mounting surface portion 31A and a peripheral mounting surface portion 31B. The central mounting surface portion 31A is a mounting surface portion located in the center of the bottom surface portion 31 and is formed in a rectangular shape in a plan view. The peripheral mounting surface portion 31B is a mounting surface portion located on the peripheral edge of the bottom surface portion 31 and is formed in a frame shape (a rectangular frame shape in a plan view) surrounding the central mounting surface portion 31A. In this embodiment, the peripheral mounting surface portion 31B is formed horizontally (here, horizontally with respect to a mounting portion T, such as a table or shelf, on which the packaging container 1 is placed), and the central mounting surface portion 31A is formed to bulge slightly upward. The bottom surface portion 31 is formed to be generally flat overall.

[0034] The main body peripheral wall 32 is formed to extend upward from the bottom surface 31 (more specifically, the peripheral mounting surface 31B in this embodiment). As shown in Figures 2 and 6, the main body peripheral wall 32 is formed to slope outward as it extends upward. The inclination angle of the main body peripheral wall 32 with respect to the bottom surface 31 (peripheral mounting surface 31B) may be, for example, approximately 15° to 40°, and the main body peripheral wall 32 is gently sloped. The main body peripheral wall 32 is formed in an annular shape so as to surround the periphery of the bottom surface 31.

[0035] The main body peripheral wall 32 has valleys 32a and ridges 32b. The valleys 32a and ridges 32b are formed so as to extend generally along the inward-outward direction R. The valleys 32a are formed as linear depressions at the four corners of the container body 3, which is rectangular in plan view. The valleys 32a define the main body peripheral wall 32 into long sides and short sides.

[0036] The ridge line portions 32b are formed to protrude in an arched shape on each side of the container body 3, which is rectangular in plan view. In this embodiment, a plurality of ridge line portions 32b are formed on each side so as to be spaced apart at a predetermined interval, and the portion between adjacent ridge line portions 32b forms an arched surface portion 32A. The arched surface portion 32A is formed to be curved and recessed like a cylinder. In this embodiment, the distance between the ridge line portions 32b on the long sides is set narrower than the distance between the ridge line portions 32b on the short sides. In other words, the arched surface portions 32A on the long sides are formed narrower than the arched surface portions 32A on the short sides.

[0037] The container body 3 includes legs 41 for supporting the container body 3 by contacting the support T, such as a table or shelf, when the container body 3 is placed on the support T. The legs 41 are formed on the body peripheral wall 32. The legs 41 are formed on the body peripheral wall 32, not on the bottom surface 31. In this embodiment, one or more legs 41 are formed on each side of the container body 3, which is rectangular in plan view. The legs 41 are formed at positions overlapping with any of the ridge lines 32b in plan view. In this embodiment, the same number of legs 41 are formed on each side of the container body 3, which is rectangular in plan view; in this example, two legs are formed on each side. The two legs 41 on each side are formed near both ends of the side. In other words, a pair of legs 41 is formed on each side of the four corner valleys 32a of the body peripheral wall 32.

[0038] The leg portions 41 are formed to be recessed downward from the main body peripheral wall portion 32. This recess forms a pocket-like space in the leg portions 41. The leg portions 41 are formed to extend downward from a position higher than the highest point of the bottom surface portion 31 on the main body peripheral wall portion 32. In this embodiment, the highest point of the bottom surface portion 31 is the center position of the central mounting surface portion 31A, and the leg portions 41 are formed to extend downward from a position higher than the height of the center position of the central mounting surface portion 31A on the main body peripheral wall portion 32. The leg portions 41 are formed to extend further below the lowest point of the bottom surface portion 31 to contact the mounting portion T. In this embodiment, the lowest point of the bottom surface portion 31 is an arbitrary position on the peripheral mounting surface portion 31B, and the leg portions 41 are formed to extend further below the peripheral mounting surface portion 31B to contact the mounting portion T.

[0039] The leg portion 41 has an inner wall portion 42, an outer wall portion 43, a pair of side wall portions 44, and a bottom portion 45. The inner wall portion 42 is a wall portion located on the inner side in the inward / outward direction R and is formed to be slightly curved so as to generally follow the direction in which each side of the main body peripheral wall portion 32 extends. The outer wall portion 43 is a wall portion located on the outer side in the inward / outward direction R and is formed to be curved so as to be convex inward. In this embodiment, the inner wall portion 42 is formed to slope outward as it extends downward. The outer wall portion 43 is formed to slope inward as it extends downward. The inner wall portion 42 is formed to be sloped more steeply than the outer wall portion 43. The pair of side wall portions 44 connect the inner wall portion 42 and the outer wall portion 43 at both circumferential ends. The bottom portion 45 connects the inner wall portion 42, the outer wall portion 43, and the pair of side wall portions 44 at their respective lower ends, and contacts the placement portion T on its outer surface (lower surface).

[0040] The main body flange 33 extends outward from the main body peripheral wall 32. The main body flange 33 extends outward from the upper end of the main body peripheral wall 32. As shown in FIG. 6, the lid flange 53 constituting the lid 5 is overlapped from above on the main body flange 33 when the lid is closed. The main body flange 33 has a corner protrusion 33A and a side protrusion 33B. The corner protrusion 33A and the side protrusion 33B are each formed to protrude upward. In this embodiment, the corner protrusion 33A extends higher than the side protrusion 33B.

[0041] The corner protrusions 33A are formed at the four corners of the container body 3, which is rectangular in plan view. The corner protrusions 33A are formed continuously from the corner valleys 32a of the main body peripheral wall 32. The side protrusions 33B are formed on each side of the container body 3. In this embodiment, multiple side protrusions 33B are formed on each side so as to be lined up at predetermined intervals. Each side protrusion 33B is formed continuously from the ridge line 32b of the main body peripheral wall 32. In this embodiment, the distance between the side protrusions 33B on the long sides is narrower than the distance between the side protrusions 33B on the short sides.

[0042] The main body skirt portion 34 extends downward from the main body flange portion 33. The main body skirt portion 34 extends from the outer edge of the main body flange portion 33, sloping outward as it extends downward. The lower end of the main body skirt portion 34 is provided with an extending edge portion 34B that extends slightly outward. As shown in FIG. 6, in the closed state (state in which the lid body 5 is fitted to the container body 3), the extending edge portion 34B can engage with the inward protrusion 54A formed on the lid body skirt portion 54 of the lid body 5 from below, thereby preventing the lid body 5 from being unintentionally removed.

[0043] As described above, in this embodiment, a plurality of leg portions 41 are formed on the main body peripheral wall portion 32. In relation to these plurality of leg portions 41, the main body peripheral wall portion 32 is divided into three regions, a first region A1, a second region A2, and a third region A3, as shown in the schematic diagram of Fig. 7. In Fig. 7, the leg portions 41 are indicated by black outlines.

[0044] The first region A1 is a region that extends closer to the bottom surface portion 31 (inward) than the leg portions 41 at the circumferential positions where the leg portions 41 are formed. In this embodiment, the first region A1 is a rectangular region surrounded by a line segment having the same circumferential length as the leg portions 41 and a line segment having a length in the inward-outward direction R of a portion of the main body circumferential wall portion 32 closer to the bottom surface portion 31 than the leg portions 41. The second region A2 is a region that extends closer to the main body flange portion 33 (outward) than the leg portions 41 at the same circumferential position as the first region A1 (i.e., the circumferential position where the leg portions 41 are formed). In this embodiment, the second region A2 is a rectangular region surrounded by a line segment having the same circumferential length as the leg portions 41 and a line segment having a length in the inward-outward direction R of a portion of the main body circumferential wall portion 32 closer to the main body flange portion 33 than the leg portions 41. Two first regions A1 and two second regions A2 are provided on each side of the main body peripheral wall 32 in accordance with the positions where the legs 41 are formed, for a total of eight regions.

[0045] In this embodiment, the leg portions 41 are formed at positions closer to the bottom surface 31 than the center position of the main body peripheral wall portion 32 in the inward / outward direction R. That is, the leg portions 41 are formed at positions closer to the bottom surface 31 (positions closer to the bottom surface 31 than the main body flange portion 33) in the inward / outward direction R connecting the inner side (bottom surface 31 side) and the outer side (main body flange portion 33 side). Therefore, in this embodiment, the length of the first region A1 located closer to the bottom surface 31 than the leg portions 41 in the inward / outward direction R of the main body peripheral wall portion 32 is shorter than the length of the second region A2 located closer to the main body flange portion 33 than the leg portions 41.

[0046] The third region A3 is a region extending in the circumferential direction where no leg portions 41 are formed. A total of eight third regions A3 are provided, one at each of the four corners and each side of the main body circumferential wall portion 32, depending on the positions of the leg portions 41. At the four corners, the third region A3 is a square region having a line segment whose length in the inward / outward direction R of the main body circumferential wall portion 32 as one side. At each side, the third region A3 is a rectangular region bounded by a line segment whose length in the inward / outward direction R of the main body circumferential wall portion 32 is equal to the circumferential distance between adjacent pairs of leg portions 41.

[0047] In this embodiment, among the first region A1 to the third region A3, the third region A3 occupies the largest area, the second region A2 occupies the second largest area, and the first region A1 occupies the smallest area. That is, the regions increase in size in the order of first region A1 → second region A2 → third region A3.

[0048] 1 to 3 and 5, the lid 5 has a top surface 51, a lid peripheral wall 52, a lid flange 53, and a lid skirt 54. These are integrally formed. From the top surface 51 outward, the lid peripheral wall 52, the lid flange 53, and the lid skirt 54 are arranged in this order and are integrally formed.

[0049] The top surface 51 forms the ceiling of the lid 5. The top surface 51 is formed in a rectangular shape when viewed from above. In this embodiment, the top surface 51 is formed in a rectangular shape when viewed from above that is slightly larger than the bottom surface 31. The top surface 51 is formed in a flat surface.

[0050] The lid peripheral wall 52 is formed to extend downward from the top surface 51. The lid peripheral wall 52 is formed to slope outward as it extends downward. The lid peripheral wall 52 is formed in a ring shape so as to surround the periphery of the top surface 51. The lid peripheral wall 52 has chamfered portions 52A and side wall portions 52B. The chamfered portions 52A are formed with chamfered corners at the four corners. The side wall portions 52B are formed with flat surfaces on each side. As shown in FIGS. 5 and 6, the lid peripheral wall 52 is connected to the lid flange portion 53 via recessed grooves 52C.

[0051] The lid flange 53 extends outward from the lid peripheral wall 52. The lid flange 53 extends outward from the upper end of a recessed groove 52C formed in the lower end of the lid peripheral wall 52. As shown in FIG. 6, in the closed state, the lid flange 53 is placed on the body flange 33 of the container body 3 from above. The lid flange 53 has corner protrusions 53A and side protrusions 53B. The corner protrusions 53A and the side protrusions 53B are each formed to protrude upward. In this embodiment, the corner protrusions 53A extend higher than the side protrusions 53B.

[0052] The corner ridges 53A are formed at the four corners of the lid 5, which is rectangular in plan view. The side ridges 53B are formed on each side of the lid 5. In this embodiment, multiple side ridges 53B are formed on each side so as to be lined up at a predetermined interval. In this embodiment, the intervals between the side ridges 33B on the long sides are narrower than the intervals between the side ridges 33B on the short sides. In the closed state, the corner ridges 53A are superimposed on the corner ridges 33A of the container body 3 from above, and the side ridges 53B are superimposed on the side ridges 33B of the container body 3 from above.

[0053] The lid flange portion 53 of this embodiment further has streak ribs 53D. The streak ribs 53D are formed so as to protrude further upward from the corner protrusions 53A at the four corners of the lid 5. The streak ribs 53D are formed so as to extend in a straight line from the chamfered portion 52A outward from the chamfered portion 52A in a plan view.

[0054] The lid skirt portion 54 extends downward from the lid flange portion 53. The lid skirt portion 54 extends from the outer edge of the lid flange portion 53 at an inclined angle outward as it extends downward, and then continues to extend downward. The downwardly extending portion of the lid skirt portion 54 is formed with an inward protrusion 54A that protrudes inward. The inward protrusion 54A is formed to extend linearly along the circumferential direction. As shown in FIGS. 2 and 3, the inward protrusion 54A is provided at the center and both end portions of each side. As shown in FIG. 6, in the closed state, the inward protrusion 54A can be engaged from below with an extending edge 34B formed on the main body skirt portion 34 of the container body 3, thereby preventing unintentional removal from the container body 3. The lower end of the lid skirt portion 54 is provided with an extending edge 54B that extends slightly outward.

[0055] The packaging container 1 of this embodiment has legs 41 formed to extend downward from the main body peripheral wall 32, and is therefore structured to be suitable for stacking with contents contained therein, as shown in Fig. 8. That is, when multiple packaging containers 1 are stacked, the bottom surface 31 of the container body 3 of the upper packaging container 1 comes into contact with the top surface 51 of the lid 5 of the lower packaging container 1, but the legs 41 extending downward from the bottom surface 31 can be engaged with the lid peripheral wall 52 from the outside.

[0056] 9, the legs 41 of one packaging container 1 to be stacked on top of another packaging container 1 are shown with hatching. As shown in this figure, the legs 41 are formed to extend linearly (in this example, in a gently curved shape that is slightly convex inward) approximately parallel to the boundary line between the top surface 51 and the lid peripheral wall 52. This makes it easy to align multiple packaging containers 1 when stacking them. Moreover, since the inner wall 42 of the legs 41 is formed to slope outward as it extends downward, even if the stacked packaging containers 1 are slightly misaligned with each other, the misalignment can be corrected and the packaging containers 1 can be stacked in an aligned state.

[0057] Furthermore, a pair of legs 41 are provided at 90° angles to each other on either side of each of the four corners of the top surface 51. This allows a plurality of packaging containers 1 to be stably stacked and aligned.

[0058] In this embodiment, the legs 41 are formed on the main body peripheral wall 32, allowing the bottom surface 31, which serves as the placement surface for placing the contents, to be formed relatively wide and flat. This effectively prevents a decrease in the storage capacity for the contents and the contents from becoming unstable. Furthermore, because the legs 41 are formed on the main body peripheral wall 32, unlike when the legs 41 are formed on the bottom surface 31, the contents are less likely to get trapped in the pocket-like space formed by the downward depression. Furthermore, depending on the position of the legs 41 in the inward / outward direction R, the top surface 51 is formed slightly larger than the bottom surface 31, improving the visibility of the contents. This effectively increases the appeal to consumers.

[0059] Second Embodiment A second embodiment of the packaging container will be described with reference to Figures 10 to 14. In this embodiment, the specific configurations of the container body 3 and the lid body 5 are different from those of the first embodiment. The following describes the packaging container 1 of this embodiment, focusing mainly on the differences from the first embodiment. Note that, unless otherwise specified, the same elements as in the first embodiment are denoted by the same reference numerals and detailed description thereof will be omitted.

[0060] As shown in FIGS. 10 and 13, the bottom surface portion 31 of this embodiment is formed in a substantially rectangular shape with a pair of diagonally positioned corners slightly recessed inward in a plan view.

[0061] In this embodiment, the main body peripheral wall 32 is formed with mountain fold lines 32c, valley fold lines 32d, and side valley portions 32e. The mountain fold lines 32c and valley fold lines 32d are formed on the long side portions such that multiple pairs of mountain fold lines 32c and two valley fold lines 32d on either side of each other are arranged circumferentially. The portions between adjacent valley fold lines 32d across the mountain fold line 32c form triangular surface portions 32B. The portions between adjacent valley fold lines 32d without the mountain fold line 32c form trapezoidal surface portions 32C. The triangular surface portions 32B and the trapezoidal surface portions 32C are provided on the long side portions. The side valley portions 32e are formed on the short side portions. The portions between adjacent corner valley portions 32a and side valley portions 32e form rectangular surface portions 32D. The rectangular surface portions 32D are provided on part of the long side portions and on the short side portions.

[0062] In this embodiment, at least one leg 41 is formed on the rectangular surface 32D. At least one leg 41 is formed on the rectangular surface 32D of the long side, and at least one leg 41 is formed on the rectangular surface 32D of the short side. In addition, at least one leg 41 is formed on the long side, straddling the triangular surface 32B and the trapezoidal surface 32C.

[0063] The main body flange portion 33 of this embodiment does not have raised corners and does not have portions corresponding to the corner raised portions 33A of the first embodiment (see FIGS. 11 and 12). Instead, the main body flange portion 33 of this embodiment has cutout portions 33C at a pair of diagonally positioned corners, as shown in FIGS. 10 and 13. The cutout portions 33C are formed by linearly cutting inward a portion of a short side portion.

[0064] As shown in Figures 10 and 14, the top surface portion 51 of this embodiment is formed in an approximately rectangular shape that is slightly larger than the top surface portion 51 when viewed in a plane, with a pair of diagonally opposite corners that are slightly recessed inward.

[0065] In this embodiment, side wall portions 52B of the short sides of lid peripheral wall 52 are curved so as to be partially recessed inward. These curved portions of side wall portions 52B correspond to the slightly recessed portions of top surface 51, and are provided at a pair of diagonally opposite corners in plan view.

[0066] The lid flange 53 of this embodiment does not have raised corners and does not have portions corresponding to the corner raised portions 53A of the first embodiment (see FIGS. 11 and 12). Instead, the lid flange 53 of this embodiment has cutouts 53C, as shown in FIGS. 10 and 14. The cutouts 53C are formed by cutting a portion of a short side inward in a linear manner. The cutouts 53C are formed to correspond to the curved portions of the side wall 52B and are provided at a pair of diagonally opposite corners in a plan view.

[0067] In this embodiment, the legs 41 are formed on the main body peripheral wall 32, so the bottom surface 31, which serves as the placement surface for placing the contents, can be formed relatively wide and flat. This effectively prevents a decrease in the storage capacity for the contents and the contents from becoming unstable. Furthermore, depending on the position of the legs 41, the top surface 51 is formed slightly larger than the bottom surface 31, improving the visibility of the contents. This effectively increases the appeal to consumers.

[0068] Furthermore, the legs 41 formed on the main body peripheral wall 32 so as to extend downward below the bottom surface 31 engage with the lid peripheral wall 52 of another packaging container 1 from the outside, allowing multiple packaging containers 1 to be stably stacked in an aligned state.

[0069] Other Embodiments (1) In the above-described embodiments, the leg portions 41 are formed closer to the bottom surface 31 than the center of the main body circumferential wall 32 in the inward / outward direction R. However, the present invention is not limited to such a configuration, and the leg portions 41 may be formed closer to the main body flange 33 than the center of the main body circumferential wall 32 in the inward / outward direction R. In this case, the length of the first region A1 is longer than the length of the second region A2 in the inward / outward direction R of the main body circumferential wall 32. Alternatively, the leg portions 41 may be formed exactly in the center of the main body circumferential wall 32 in the inward / outward direction R. In this case, the length of the first region A1 is equal to the length of the second region A2 in the inward / outward direction R of the main body circumferential wall 32.

[0070] (2) In the above embodiments, the configuration in which two legs 41 are formed on each side of the main body peripheral wall 32 has been described as an example. However, the present invention is not limited to such a configuration, and the number of legs 41 formed on each side of the main body peripheral wall 32 may be one, or three or more. Furthermore, the number of legs 41 formed on the main body peripheral wall 32 does not necessarily have to be the same on all sides. For example, the number of legs 41 may be different on the long sides and the short sides of the main body peripheral wall 32, or the number of legs 41 on each side may be different from each other.

[0071] (3) In each of the above embodiments, the configuration in which the shape of the packaging container 1 in a plan view is rectangular has been described as an example. However, without being limited to such a configuration, the shape of the packaging container 1 in a plan view may be other rectangular shapes, such as a square, a trapezoid, or a parallelogram. The shape of the packaging container 1 in a plan view may also be a polygonal shape, such as a pentagonal, hexagonal, or octagonal shape. Alternatively, the shape of the packaging container 1 in a plan view may be, for example, a circle, an ellipse, or any other shape.

[0072] (4) The configurations disclosed in the above-described embodiments (including the above-described embodiments and other embodiments; the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, as long as no contradiction occurs. Regarding other configurations, the embodiments disclosed in this specification are illustrative in all respects and can be appropriately modified within the scope of the present disclosure. [Explanation of symbols]

[0073] 1 Packaging container 3 Container body 5 Lid 31 Bottom part 32 Main body peripheral wall 33 Main body flange 41 Legs 51 Top section 52 Lid peripheral wall T Placement part R Inner / outer direction A1 1st area A2 2nd area A3 3rd area

Claims

1. A packaging container comprising a container body and a lid body, The container body has a bottom surface, a main body peripheral wall portion extending upward from the bottom surface, and a main body flange portion extending outward from the main body peripheral wall portion, a plurality of legs extending below the lowest point of the bottom surface and contacting the placement portion are formed on the main body peripheral wall; A packaging container, wherein the main body peripheral wall portion has a first region extending toward the bottom portion further than the legs at a circumferential position where the legs are formed, a second region extending toward the main body flange portion further than the legs at the same circumferential position as the first region, and a third region extending to a circumferential position where the legs are not formed.

2. 2. The packaging container according to claim 1, wherein the legs are formed so as to extend downward from a position higher than the highest point of the bottom surface of the main body peripheral wall.

3. 3. The packaging container according to claim 1, wherein the length of the first region is shorter than the length of the second region in the inward / outward direction of the main body peripheral wall portion.

4. The lid has a top surface portion that is slightly larger than the bottom surface portion, and a lid peripheral wall portion that extends downward from the top surface portion, 3. The packaging container according to claim 1, wherein the leg portions are formed so as to extend linearly in parallel or approximately parallel to a boundary line between the top surface portion and the lid peripheral wall portion.

5. The container body and the lid body are formed in a polygonal shape in a plan view, 3. The packaging container according to claim 1, wherein at least one leg is provided on each side of the peripheral wall of the main body.

6. 6. The packaging container according to claim 5, wherein at least two of the legs are provided on each side of the main body peripheral wall so that a pair of the legs are positioned on either side of each corner of the bottom surface.

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