JP2025177699A - packaging containers - Google Patents

Abstract

A packaging container is provided 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.
[Solution] A packaging container (1) comprises a container body (3) and a lid (5). The container body (3) has a bottom surface (31) and a body peripheral wall (32) extending upward from the bottom surface (31). Legs (41) extending further downward than the lowest point of the bottom surface (31) and contacting the placement portion are formed on the body peripheral wall (32).
[Selected Figure] Figure 1

Description

The present invention relates to a packaging container.

For example, packaging containers are used to store boxed lunches, prepared meals, fresh food, and other items sold at retail stores such as supermarkets, convenience stores, and department stores. Such packaging containers comprise a container body and a lid that engages with the container body, and the container body is placed on a support such as a table or display stand.

The container body may be placed with its entire bottom surface in contact with the receiving surface, but in that case, dirt on the receiving surface 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 surface and making it less susceptible to dirt adhesion. An example of such a packaging container is disclosed in JP 2013-67400 A (Patent Document 1).

JP 2013-67400 A

However, since the bottom surface is the surface on which the stored items are placed, if legs are formed on the bottom surface as in Patent Document 1, the area available for placing the stored items may be reduced, or the stability of the stored items may be compromised due to unevenness.

Therefore, it is desirable to develop a packaging container that can prevent dirt from adhering to the bottom without compromising the storage capacity and stability of the contents as much as possible.

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 and a main body peripheral wall portion extending upward from the bottom surface,
The body peripheral wall is formed with legs that extend further downward than the lowest point of the bottom surface and contact the placement portion.

With this configuration, the legs extend further below the lowest point of the bottom surface and come into contact with the receiving portion, 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 peripheral wall of the main body rather than the bottom surface, the bottom surface, which serves as the receiving surface for placing the contents, can be made relatively wide and flat. This prevents a decrease in the storage capacity of the contents and the contents from becoming unstable. These features make it possible to provide a packaging container that can prevent the adhesion of dirt to the bottom surface without compromising the storage capacity or stability of the contents as much as possible.

Preferred embodiments of the present invention are described below. However, the scope of the present invention is not limited to the preferred embodiments described below.

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.

With this configuration, a portion of the bottom surface of the main body peripheral wall can be used as a loading surface for placing items, making it easier to maintain a high capacity for storing items.

In one embodiment,
It is preferable that the leg portions are formed at positions closer to the bottom portion than the center position in the inward/outward direction of the main body peripheral wall portion.

This configuration allows the bottom surface to be spaced apart from the receiving surface without excessively increasing the height of the legs.

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.

With this configuration, the legs of one packaging container's container body are aligned with the boundary line between the top surface and peripheral wall of the lid of another packaging container, making it easy to stack multiple packaging containers in an aligned state.

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.

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 polygonal lid when viewed from above, thereby enabling positioning when stacking multiple packaging containers and preventing subsequent misalignment.

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

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 polygonal lid in plan view, thereby improving stability when multiple packaging containers are stacked.

Further features and advantages of the present invention will become more apparent from the following description of exemplary, non-limiting embodiments, which proceeds with reference to the drawings.

FIG. 1 is an exploded perspective view of a packaging container according to a first embodiment; Exploded front view of packaging container Exploded side view of packaging container Plan view of the container body Plan view of the lid Cross-section of a packaging container Schematic diagram showing three regions in the main body peripheral wall Schematic front view of stacked packaging containers Schematic plan view of stacked packaging containers FIG. 10 is an exploded perspective view of a packaging container according to a second embodiment. Exploded front view of packaging container Exploded side view of packaging container Plan view of the container body Plan view of the lid

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.

In the following, the direction toward the inside of the packaging container 1 (from the outer edge toward the center) will be referred to as "inward," and the direction toward the outside of the packaging container 1 (from the center toward the outer edge) will be referred to as "outward." Furthermore, the direction connecting the center and outer edge will be referred to as the "inward-outward direction R."

As shown in Figures 1 to 3, the packaging container 1 comprises a container body 3 and a lid body 5. The packaging container 1 is formed by sheet molding. The container body 3 and 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 thermoplastic resin foam sheet, and the lid body 5 is formed by thermoforming a thermoplastic resin non-foam sheet.

The thermoplastic resin foam sheet that constitutes the container body 3 has a thermoplastic resin foam layer primarily made of thermoplastic resin. There are no particular restrictions on the thermoplastic resin that constitutes the thermoplastic resin foam layer. 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. These may each be a homopolymer, a copolymer with other monomers, a mixture with other resins, or a combination thereof.

The thermoplastic resin foam sheet may also have a non-foamed thermoplastic resin layer primarily 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.

In addition, methods such as coextrusion, extrusion lamination, and thermal lamination can be used to laminate each layer.

The non-foamed thermoplastic resin sheet that constitutes the lid 5 has a non-foamed thermoplastic resin layer that is primarily made of a thermoplastic resin. The thermoplastic resin that constitutes the non-foamed thermoplastic resin layer is not particularly limited, and the various resins mentioned above for the container body 3 can be used as appropriate.

Like the lid 5, the container body 3 may also be formed by thermoforming a non-foamed thermoplastic resin sheet. The container body 3 may be formed to be colored or colorless. From the perspective of visibility of the contents, it is preferable that the lid 5 be formed to be colorless.

In this embodiment, the packaging container 1 (container body 3 and lid body 5) is formed into a polygonal shape in a planar view. "Polygonal shape in a planar view" means that the external shape in a planar view is polygonal or that the overall shape is approximately polygonal. Therefore, as long as the overall external shape in a planar view of the container body 3 and lid body 5 is approximately polygonal, 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.

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 make up 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.

As shown in Figures 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 → main body skirt portion 34 as they move outward from the bottom surface portion 31.

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

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 angle of inclination of the main body peripheral wall 32 relative 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.

The main body peripheral wall 32 has valleys 32a and ridges 32b. The valleys 32a and ridges 32b are each formed to extend generally along the inward-outward direction R. The valleys 32a are linearly recessed into the four corners of the container body 3, which is rectangular in plan view. These valleys 32a define the long and short sides of the main body peripheral wall 32.

The ridge portions 32b are formed in an arched shape on each side of the container body 3, which is rectangular in plan view. In this embodiment, multiple ridge portions 32b are formed on each side at a predetermined interval, and the portion between adjacent ridge portions 32b forms an arched surface portion 32A. The arched surface portion 32A is formed to be cylindrically curved and recessed. In this embodiment, the spacing between the ridge portions 32b on the long sides is set narrower than the spacing between the ridge 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.

The container body 3 includes legs 41 that contact the support T, such as a table or shelf, to support the container body 3 when 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 that overlap with one of the ridges 32b in plan view. In addition, 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 valleys 32a at the four corners of the body peripheral wall 32.

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

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 its outer surface (lower surface) contacts the receiving portion T.

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 that constitutes the lid 5 is placed on top of the main body flange 33 from above when the lid is closed. The main body flange 33 has corner ridges 33A and side ridges 33B. The corner ridges 33A and side ridges 33B are each formed to bulge upward. In this embodiment, the corner ridges 33A extend higher than the side ridges 33B.

The corner ridges 33A are formed at the four corners of the container body 3, which is rectangular in plan view. The corner ridges 33A are formed continuously from the corner valleys 32a of the main body peripheral wall 32. The side ridges 33B are formed on each side of the container body 3. In this embodiment, multiple side ridges 33B are formed on each side so that they are lined up at a predetermined interval. Each side ridge 33B is formed continuously from the ridge line 32b of the main body peripheral wall 32. In this embodiment, the spacing between side ridges 33B on the long sides is narrower than the spacing between side ridges 33B on the short sides.

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 Figure 6, in the closed state (when 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, preventing the lid body 5 from being unintentionally removed.

As described above, in this embodiment, multiple leg portions 41 are formed on the main body peripheral wall portion 32. In relation to these multiple 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 Figure 7. Note that in Figure 7, the leg portions 41 are indicated by black outlines.

The first region A1 is a region that extends toward the bottom surface portion 31 (inward) from the leg portions 41 at the circumferential position where the leg portions 41 are formed. In this embodiment, the first region A1 is a rectangular region bounded 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 the 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 toward the main body flange portion 33 (outward) from 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 bounded 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 the 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, depending on the positions where the legs 41 are formed, for a total of eight regions.

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

The third region A3 is a region that extends circumferentially to positions 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 peripheral wall portion 32, depending on the positions where the leg portions 41 are formed. At the four corners, the third region A3 is a square region with one side being a line segment the length of the main body peripheral wall portion 32 in the inward/outward direction R. At each side, the third region A3 is a rectangular region bounded by a line segment the length of the main body peripheral wall portion 32 in the inward/outward direction R and a line segment the length of which is equal to the circumferential distance between adjacent pairs of leg portions 41.

In this embodiment, of the first to third regions A1 to 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. In other words, the regions increase in size in the order of first region A1 → second region A2 → third region A3.

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

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 as a flat surface.

The lid peripheral wall 52 extends downward from the top surface 51. The lid peripheral wall 52 slopes outward as it extends downward. The lid peripheral wall 52 is formed in a ring shape that surrounds 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 Figures 5 and 6, the lid peripheral wall 52 is connected to the lid flange portion 53 via recessed grooves 52C.

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 top of the body flange 33 of the container body 3. The lid flange 53 has corner ridges 53A and side ridges 53B. The corner ridges 53A and side ridges 53B are each formed to bulge upward. In this embodiment, the corner ridges 53A extend higher than the side ridges 53B.

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 that they are lined up at a predetermined interval. In this embodiment, the spacing between the side ridges 33B on the long sides is narrower than the spacing 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.

In this embodiment, the lid flange portion 53 further includes streak ribs 53D. The streak ribs 53D are formed at the four corners of the lid 5 so as to protrude further upward from the corner protrusions 53A. In a plan view, 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.

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 angle outward as it extends downward, and then continues downward. The downward-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 Figures 2 and 3, the inward protrusion 54A is provided at the center and both ends of each side. As shown in Figure 6, in the closed state, the inward protrusion 54A can be engaged from below with the extending edge 34B formed on the 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.

The packaging container 1 of this embodiment has legs 41 extending downward from the main body peripheral wall 32, making it suitable for stacking with contents contained therein, as shown in Figure 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, which extend downward beyond the bottom surface 31, can be engaged from the outside with the lid peripheral wall 52.

In Figure 9, the legs 41 of one packaging container 1 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, because 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 containers can be stacked in an aligned state.

In addition, a pair of legs 41 are provided at each of the four corners of the top surface 51, facing each other at 90° angles. This allows multiple packaging containers 1 to be stably stacked and aligned.

In this embodiment, the legs 41 are formed on the main body peripheral wall 32, allowing the bottom surface 31, which serves as the surface on which the stored items are placed, to be relatively wide and flat. This effectively prevents a decrease in the storage capacity for the stored items or the stored items 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 stored items 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 stored items. This effectively increases the appeal to consumers.

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 5 are different from those of the first embodiment. Below, the packaging container 1 of this embodiment will be described, focusing mainly on the differences from the first embodiment. Note that, points that are not specifically mentioned are the same as those in the first embodiment, and the same reference numerals will be used, and detailed description will be omitted.

As shown in Figures 10 and 13, the bottom surface portion 31 of this embodiment is formed in a generally rectangular shape with a pair of diagonally opposite corners slightly recessed inward in a plan view.

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

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, spanning the triangular surface 32B and the trapezoidal surface 32C.

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 Figures 11 and 12). Instead, as shown in Figures 10 and 13, the main body flange portion 33 of this embodiment has cutout portions 33C at a pair of diagonally positioned corners. The cutout portions 33C are formed by linearly cutting inward a portion of the short side.

As shown in Figures 10 and 14, the top surface 51 of this embodiment is formed in a generally rectangular shape that is slightly larger than the top surface 51 in plan view, with a pair of diagonally positioned corners slightly recessed inward.

In this embodiment, the side wall portions 52B of the short sides of the lid peripheral wall portion 52 are curved so that they are partially recessed inward. These curved portions of the side wall portions 52B correspond to the slightly recessed portions of the top surface portion 51, and are located at a pair of diagonally opposite corners in plan view.

The lid flange portion 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 Figures 11 and 12). Instead, as shown in Figures 10 and 14, the lid flange portion 53 of this embodiment has cutout portions 53C. The cutout portions 53C are formed by cutting a portion of the short side portion inward in a linear manner. The cutout portions 53C are formed to correspond to the curved portions of the side wall portion 52B, and are located at a pair of diagonally opposite corners in plan view.

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

Furthermore, the legs 41 formed on the main body peripheral wall 32 so as to extend downward from 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.

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.

(2) In the above embodiments, the leg portions 41 are formed in the middle of the main body peripheral wall portion 32 in the inward/outward direction R. However, this is not limited to such a configuration, and the leg portions 41 may be formed in a position adjacent to the bottom surface portion 31 of the main body peripheral wall portion 32. In this case, the first region A1 is not present in the main body peripheral wall portion 32, and only the second region A2 and the third region A3 are provided. Alternatively, the leg portions 41 may be formed in a position adjacent to the main body flange portion 33 of the main body peripheral wall portion 32. In this case, the second region A2 is not present in the main body peripheral wall portion 32, and only the first region A1 and the third region A3 are provided.

(3) In each of the above embodiments, a configuration in which multiple leg portions 41 are formed intermittently in the circumferential direction has been described as an example. However, the present invention is not limited to such a configuration, and the leg portion 41 may be formed as a single annular leg portion that is continuous around the entire circumference. In this case, the main body peripheral wall portion 32 does not have the third region A3, and only the first region A1 and the second region A2 are provided.

(4) In the above embodiments, a 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, this configuration is not limited to this, 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.

(5) In each of the above embodiments, a 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 pentagon, a hexagon, or an octagon. Alternatively, the shape of the packaging container 1 in a plan view may be, for example, a circle, an ellipse, or any other shape.

(6) The configurations disclosed in the above-described embodiments (including the above-described embodiments and other embodiments; the same applies hereinafter) can also be applied in combination with configurations disclosed in other embodiments, provided that no contradictions arise. Regarding other configurations, the embodiments disclosed in this specification are illustrative in all respects and can be modified as appropriate within the scope of the present disclosure.

1 Packaging container 3 Container main body 5 Lid 31 Bottom part 32 Main body peripheral wall part 33 Main body flange part 41 Leg part 51 Top part 52 Lid peripheral wall part T Placement part R Inner/outer direction A1 First area A2 Second area A3 Third area

Claims (6)

A packaging container comprising a container body and a lid body,
The container body has a bottom surface and a main body peripheral wall portion extending upward from the bottom surface,
A packaging container in which legs extending further below the lowest point of the bottom surface and contacting the placement portion are formed on the peripheral wall of the main body. A packaging container as described in claim 1, wherein the legs are formed to extend downward from a position higher than the highest point of the bottom surface portion of the main body peripheral wall. A packaging container according to claim 1 or 2, wherein the leg portions are formed closer to the bottom surface than the center position in the inward/outward direction of the peripheral wall portion of the main body. 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. 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. A packaging container as described in claim 5, wherein at least two legs are provided on each side of the peripheral wall of the main body, with a pair of legs positioned on either side of each corner of the bottom surface.